10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

__________________________________________________________ 

FORM 10-K

(Mark One)

ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended: September 24, 2016

or

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from              to             

Commission File Number: 1-36214

__________________________________________________________ 

Hologic, Inc.

(Exact name of registrant as specified in its charter)

Delaware	04-2902449
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)

250 Campus Drive, Marlborough, Massachusetts 01752

(Address of Principal Executive Offices) (Zip Code)

Registrant’s Telephone Number, Including Area Code (508) 263-2900

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class	Name of Each Exchange on which Registered
Common Stock, $.01 par value	The NASDAQ Stock Market LLC

Securities registered pursuant to Section 12(g) of the Act: None

__________________________________________________________

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  ý    No  ¨

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ¨    No  ý

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ý    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ý    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act (Check one).

Large accelerated filer	ý	Accelerated filer	¨
Non-accelerated filer	¨ (Do not check if a smaller reporting company)	Smaller reporting company	¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act.)    Yes  ¨    No  ý

The aggregate market value of the registrant's Common Stock held by non-affiliates of the registrant as of March 26, 2016 was $9,587,876,939 based on the price of the last reported sale on Nasdaq Global Select Market on that date.

As of November 11, 2016, 278,215,876 shares of the registrant’s Common Stock, $0.01 par value, were outstanding.

__________________________________________________________

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant’s Proxy Statement for the registrant’s annual meeting of stockholders to be filed within 120 days of the end of its fiscal year ended September 24, 2016 are incorporated into Part III (Items 10, 11, 12, 13 and 14) of this Annual Report on Form 10-K where indicated.

HOLOGIC, INC.

ANNUAL REPORT ON FORM 10-K

For the Fiscal Year Ended September 24, 2016

TABLE OF CONTENTS

		Page
PART I
Item 1.	Business	4
Item 1A.	Risk Factors	15
Item 1B.	Unresolved Staff Comments	31
Item 2.	Properties	32
Item 3.	Legal Proceedings	33
Item 4.	Mine Safety Disclosures	33
PART II
Item 5.	Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	34
Item 6.	Selected Financial Data	36
Item 7.	Management's Discussion and Analysis of Financial Condition and Results of Operations	37
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	65
Item 8.	Financial Statements and Supplementary Data	66
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	66
Item 9A.	Controls and Procedures	67
Item 9B.	Other Information	70
PART III
Item 10.	Directors, Executive Officers and Corporate Governance	71
Item 11.	Executive Compensation	71
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	71
Item 13.	Certain Relationships and Related Transactions, and Director Independence	71
Item 14.	Principal Accounting Fees and Services	72
PART IV
Item 15.	Exhibits and Financial Statement Schedules	73
Item 16.	Form 10-K Summary	78

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

Some of the statements contained in this report are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These statements involve known and unknown risks, uncertainties and other factors which may cause our or our industry’s actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. Forward-looking statements include, but are not limited to, statements regarding:

• the effect of the continuing worldwide macroeconomic uncertainty on our business and results of operations;

• the coverage and reimbursement decisions of third-party payors and the guidelines, recommendations, and studies published by various organizations relating to the use of our products and treatments;

• the uncertainty of the impact of cost containment efforts and federal healthcare reform legislation on our business and results of operations;

• the ability to successfully manage ongoing organizational and strategic changes, including our ability to attract, motivate and retain key employees;

• the impact and anticipated benefits of completed acquisitions and acquisitions we may complete in the future;

• the ability to consolidate certain of our manufacturing and other operations on a timely basis and within budget, without disrupting our business and to achieve anticipated cost synergies related to such actions;

• our goal of expanding our market positions;

• the development of new competitive technologies and products;

• regulatory approval and clearances for our products;

• production schedules for our products;

• the anticipated development of markets for our products and the success of our products in these markets;

• the anticipated performance and benefits of our products;

• business strategies;

• estimated asset and liability values;

• the impact and costs and expenses of any litigation we may be subject to now or in the future;

• our compliance with covenants contained in our debt agreements;

• anticipated trends relating to our financial condition or results of operations, including the impact of interest rates and foreign currency exchange rate fluctuations; and

• our capital resources and the adequacy thereof.

In some cases, you can identify forward-looking statements by terms such as “may,” “will,” “should,” “could,” “would,” “expects,” “plans,” “anticipates,” “believes,” “estimates,” “projects,” “predicts,” “potential” and similar expressions intended to identify forward-looking statements. These statements are only predictions and involve known and unknown risks, uncertainties, and other factors that may cause our actual results, levels of activity, performance, or achievements to be materially different from any future results, levels of activity, performance, or achievements expressed or implied by such forward-looking statements. Given these uncertainties, you should not place undue reliance on these forward-looking statements. Also, these forward-looking statements represent our estimates and assumptions only as of the date of this report. Except as otherwise required by law, we expressly disclaim any obligation or undertaking to release publicly any updates or revisions to any forward-looking statement contained in this report to reflect any change in our expectations or any change in events, conditions or circumstances on which any of our forward-looking statements are based. Factors that could cause or contribute to differences in our future financial results include the cautionary statements set forth herein and in our other filings with the Securities and Exchange Commission, or SEC, including those set forth under “Risk Factors” set forth in Part I, Item 1A of this annual report on Form 10-K. We qualify all of our forward-looking statements by these cautionary statements.

TRADEMARK NOTICE

Hologic is a trademark of Hologic, Inc. Other trademarks, logos, and slogans registered or used by Hologic and its divisions and subsidiaries in the United States and other countries include, but are not limited to, the following: 3D, 3D Mammography, Affirm, Aptima, Aptima Combo 2, ATEC, Celero, Cervista, C-View, Dimensions, DirectRay, Discovery, DTS, Eviva, Fluoroscan, Genius, Gen-Probe, Horizon, Interlace, Invader, MultiCare, MyoSure, NovaSure, Panther, PreservCyt, Progensa, SecurView, Selenia, StereoLoc, ThinPrep, Tigris, TLI IQ, and TMA.

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PART I

Item 1.    Business

Overview

We are a developer, manufacturer and supplier of premium diagnostics products, medical imaging systems and surgical products with an emphasis on women's health. The Company operates in four segments: Diagnostics, Breast Health, GYN Surgical and Skeletal Health. We sell and service our products through a combination of direct sales and service personnel and a network of independent distributors and sales representatives.

We offer a wide range of diagnostic products which are used primarily to aid in the diagnosis of human diseases and screen donated human blood and plasma. Our primary diagnostics products include our Aptima family of assays, which run on our advanced instrumentation systems (Panther and Tigris), our ThinPrep system, the Rapid Fetal Fibronectin Test and our Procleix blood screening assays. The Aptima family of assays is used to detect the infectious microorganisms that cause the common sexually transmitted diseases, or STDs, chlamydia and gonorrhea, certain high-risk strains of human papillomavirus, or HPV, and Trichomonas vaginalis, the parasite that causes trichomoniasis. The ThinPrep System is primarily used in cytology applications, such as cervical cancer screening, and the Rapid Fetal Fibronectin Test assists physicians in assessing the risk of pre-term birth. In blood screening, we develop and manufacture the Procleix family of assays, which are used to detect various infectious diseases. The Procleix blood screening assays also run on our Panther and Tigris systems. These blood screening products are marketed worldwide by our blood screening collaborator, Grifols S.A., or Grifols, under Grifols' trademarks.

Our Breast Health products include a broad portfolio of breast imaging and related products and accessories, including digital mammography systems, computer-aided detection, or CAD, for mammography and minimally invasive breast biopsy devices, breast biopsy site markers, and breast biopsy guidance systems. Our most advanced breast imaging platform, Dimensions, utilizes a technology called tomosynthesis to produce 3D images that show multiple contiguous slice images of the breast, which we refer to as the Genius 3D Mammography exam, as well as conventional 2D full field digital mammography images. Our clinical results for FDA approval demonstrated that conventional 2D digital mammography with the addition of 3D tomosynthesis is superior to 2D digital mammography alone for both screening and diagnostics.

Our GYN Surgical products include our NovaSure Endometrial Ablation System and our MyoSure Hysteroscopic Tissue Removal System. The NovaSure system involves a trans-cervical procedure for the treatment of abnormal uterine bleeding. The MyoSure system is a tissue removal device that is designed to provide incision-less removal of fibroids, polyps, and other pathology within the uterus.

Our Skeletal Health segment offers Discovery and Horizon X-ray bone densitometers that assess the bone density of fracture sites; and mini C-arm imaging systems that assist in performing minimally invasive surgical procedures on a patient's extremities, such as the hand, wrist, knee, foot, and ankle.

Available Information

Our Internet website address is http://www.hologic.com. Through our website, we make available, free of charge, our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and any amendments to those reports, as well as proxy statements, and, from time to time, other documents as soon as reasonably practicable after we electronically file such material with, or furnish it to, the Securities and Exchange Commission, or SEC. These SEC reports can be accessed through the investor relations section of our website. The information found on our website is not part of this or any other report we file with or furnish to the SEC.

Investors and others should note that we announce material financial information to our investors using our investor relations website (http://investors.hologic.com), SEC filings, press releases, public conference calls and webcasts. We use these channels as well as social media to communicate with our members and the public about our company, our services and other issues. It is possible that the information we post on social media could be deemed to be material information. Therefore, we encourage investors, the media, and others interested in our company to review the information we post on the social media channels listed on our investor relations website. Hologic has used, and intends to continue to use, our investor relations website, as well as our Twitter account (@Hologic), as means of disclosing material non-public information and for complying with its disclosure obligations under Regulation FD. Further corporate governance information, including our certificate of incorporation, bylaws, governance guidelines, board committee charters, and code of business conduct and ethics, is also available on our investor relations website under the heading “Corporate Governance.” The contents of our websites are not intended to be incorporated by reference into this Annual Report on Form 10-K or in any other report or document we file with the SEC, and any references to our websites are intended to be inactive textual references only.

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You may read and copy any materials we file with the SEC at the SEC’s Public Reference Room at 100 F Street, NE, Washington, DC 20549. You may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC also maintains an Internet website that contains reports, proxy and information statements, and other information regarding Hologic and other issuers that file electronically with the SEC. The SEC’s Internet website address is http://www.sec.gov.

Products

We view our operations and manage our business in four principal reporting segments: Diagnostics, Breast Health, GYN Surgical and Skeletal Health. Financial information concerning these segments is provided in Note 13 to our audited consolidated financial statements contained in Item 15 of this Annual Report. The following describes our principal products in each of our segments.

Diagnostics Products

Aptima Family of Assays

The Aptima family of assays is used to detect the infectious microorganisms that cause the common sexually transmitted diseases, or STDs, chlamydia and gonorrhea, certain high-risk strains of human papillomavirus, or HPV, and Trichomonas vaginalis, the parasite that causes trichomoniasis. In addition, we also offer viral load assays for the quantitation of HBV, HCV and HIV-1 for use on our Panther instrument system. All three of these viral load assays are CE-marked and are currently marketed in Europe and we are seeking approval of these viral load assays for sale and marketing in the U.S. Our Aptima products integrate various proprietary technologies, including our target capture technology, our Transcription Mediated Amplification, or TMA, technology, and our hybridization protection assay, or HPA, and dual kinetic assay, or DKA, technologies, to produce highly refined amplification assays that increase assay performance, improve laboratory efficiency and reduce laboratory costs. Each of these technologies is described in greater detail below.

Target Capture/Nucleic Acid Extraction Technology. The detection of target organisms that are present in small numbers in a large-volume clinical sample requires that target organisms be concentrated to a detectable level. One way to accomplish this is to isolate the particular nucleic acid of interest by binding it to a solid support. This support, with the target bound to it, can then be separated from the original sample. We refer to such techniques as “target capture.” We have developed target capture techniques to immobilize nucleic acids on magnetic beads by the use of a “capture probe” that attaches to the bead and to the target nucleic acid. We use magnetic separation to concentrate the target by drawing the magnetic beads to the sides of the sample tube, while the remainder of the sample is washed away and removed. When used in conjunction with our patented amplification methods, target capture techniques concentrate the nucleic acid target(s) and also remove materials in the sample that might otherwise interfere with amplification.

Transcription-Mediated Amplification (TMA) Technology. The goal of amplification technologies is to produce millions of copies of the target nucleic acid sequences that are present in samples in small numbers. These copies can then be detected using DNA probes. Amplification technologies can yield results in only a few hours versus the several days or weeks required for traditional culture methods. TMA is a transcription-based amplification system that uses two different enzymes to drive the process. The first enzyme is a reverse transcriptase that creates a double-stranded DNA copy from an RNA or DNA template. The second enzyme, an RNA polymerase, makes thousands of copies of the complementary RNA sequence, known as the “RNA amplicon,” from the double-stranded DNA template. Each RNA amplicon serves as a new target for the reverse transcriptase and the process repeats automatically, resulting in an exponential amplification of the original target that can produce over a billion copies of amplicon in less than thirty minutes.

Hybridization Protection Assay (HPA) and Dual Kinetic Assay (DKA) Technologies. With our patented HPA technology, we have simplified testing, further increased test sensitivity and specificity, and increased convenience. In the HPA process, the acridinium ester, or AE, molecule is protected within the double-stranded helix that is formed when the probe binds to its specific target. Prior to activating the AE molecule, known as “lighting off,” a chemical is added that destroys the AE molecule on any unhybridized probes, leaving the label on the hybridized probes largely unaffected. When the “light off” or detection reagent is added to the specimen, only the label attached to the hybridized probe is left to produce a signal indicating that the target organism’s DNA or RNA is present. All of these steps occur in a single tube and without any wash steps, which were required as part of conventional probe tests. Our DKA technology uses two types of AE molecules-one that “flashes” and another one that “glows.” By using DKA technology, we have created nucleic acid test, or NAT, assays that can detect two separate targets simultaneously.

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Procleix Family of Assays for Blood Screening

We develop and manufacture the Procleix family of assays, which are marketed and sold worldwide by Grifols, our blood screening collaborator, under Grifols’ trademarks. The Procleix family of assays includes the Ultrio and Ultrio Plus assays, which simultaneously detect HIV type-1, or HIV-1, the hepatitis C virus, or HCV, and the hepatitis B virus, or HBV, in donated blood, plasma, organs and tissues, the Ultrio Elite assay, which simultaneously detects HIV-1, HIV type-2, or HIV-2, HBV and HCV in donated blood, plasma, organs and tissues, the HEV assay, which detects the hepatitis E Virus in donated blood, plasma, organs and tissues, the WNV assay, which detects West Nile Virus, or WNV, in donated blood, plasma, organs and tissues, and the Parvo/HAV assay, which detects the Parvovirus and hepatitis A virus, or HAV, in donated blood, plasma, organs and tissues.

Instrumentation

We have developed and continue to develop instrumentation and software designed specifically for use with certain of our assays, including the Aptima family of assays and the Procleix family of assays. We also provide technical support and instrument service to maintain these instrument systems in the field. By placing our proprietary instrumentation in laboratories and hospitals, we can establish a platform for future sales of our assays.

Our instrumentation includes the Tigris system, an integrated, fully-automated testing instrument for high-volume laboratories which is approved for use with a number of our Aptima and Procleix assays, the Panther instrument system, an integrated, fully-automated testing instrument capable of serving both high- and low-volume laboratories, and our semi-automated direct tube sampling, or DTS, instruments which are used to run a number of infectious disease assays. In the fourth quarter of fiscal 2014, we also introduced our Tomcat instrument, a fully-automated general purpose instrument designed to improve pre-analytical sample processing by eliminating the inefficient and error-prone activities associated with manually transferring samples from one tube to another.

Invader Chemistry Platform

Our Invader chemistry platform is a DNA probe-based system for highly sensitive detection of specific nucleic acid sequences. It is an accurate and specific method for detecting single-base pair changes, insertions, deletions, gene copy number, infectious agents, and gene expression. Invader reactions can be performed using genomic DNA, amplified RNA, PCR, or real-time PCR products. Our products and clinical diagnostic offerings based upon our Invader chemistry include our Cervista HPV tests and products to assist in the diagnosis of cardiovascular risk and other diseases.

ThinPrep System

The ThinPrep System is the most widely used method for cervical cancer screening in the U.S. The ThinPrep System consists of any one or more of the following: the ThinPrep 2000 Processor, ThinPrep 5000 Processor, ThinPrep Imaging System, and related reagents, filters and other supplies, such as the ThinPrep Pap Test and our ThinPrep PreservCyt Solution.

The ThinPrep Process. The ThinPrep process begins with the patient’s cervical sample being obtained by the physician using a cervical sampling device that, rather than being smeared on a microscope slide as in a conventional Pap smear, is inserted into a vial filled with our proprietary ThinPrep PreservCyt Solution. This enables most of the patient’s cell samples to be preserved before the cells can be damaged by air drying. The ThinPrep specimen vial is then labeled and sent to a laboratory equipped with a ThinPrep Processor for slide preparation. At the laboratory, the ThinPrep specimen vial is inserted into a ThinPrep Processor, a proprietary sample preparation device, which automates the process of preparing cervical slides for staining and microscopic examination.

In the case of manual screening, the cytotechnologist screens each Pap test slide with a microscope to first determine the adequacy of the slide and then to examine the entire slide to differentiate diseased or abnormal cells from normal cells. With the ThinPrep Imaging System, the screening process has been automated to combine the power of computer imaging technology and human interpretive skills. Prior to human review, the ThinPrep Imaging System rapidly scans, locates and highlights areas of interest for review. By directing the cytotechnologist to areas of interest on a slide, the system may increase a cytology laboratory’s screening productivity and diagnostic accuracy.

Additional Applications. In addition to serving as a replacement for the conventional Pap smear, the ThinPrep System can also be used for non-gynecological cytology screening applications including fine-needle aspiration specimens (e.g., breast, thyroid, lung or liver), body fluids (e.g., urine, pleural fluid, ascitic fluid or pericardial fluid), respiratory specimens (e.g., sputum or brushing of respiratory tracts) and ancillary testing (e.g., cell blocks, immunocytochemistry or special stains).

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Rapid Fetal Fibronectin Test

The Rapid Fetal Fibronectin Test is a patented single-use disposable test used to determine a woman’s risk of pre-term birth by detecting the presence of a specific protein, fetal fibronectin, in vaginal secretions during pregnancy. The test utilizes a single-use, disposable cassette and is analyzed on our patented instrument, the TLI IQ System.

Breast Health Products

Full Field Digital Mammography System

Our full field digital mammography systems are based on our proprietary DirectRay digital detector, which employs an amorphous selenium photoconductor to directly convert x-ray photons into an electrical signal. No intensifying screens or additional processes are required to capture and convert the x-ray energy, enabling high imaging resolution and contrast sensitivity. Other digital technologies employ an indirect two-step process by first converting x-ray energy into light and then converting the light energy into electrical signals. We believe that digital x-ray imaging technologies that require light conversion may compromise image resolution, lessening detection capability.

Dimensions: Breast Tomosynthesis

Our Dimensions platform includes a mammography gantry incorporating our DirectRay digital detector capable of performing both 2D and tomosynthesis image acquisition and display. When operating in tomosynthesis mode, the system acquires a series of low dose x-ray images taken in a scanning motion at various angles. The images are mathematically processed into a series of small slices, allowing for visualization of the breast in multiple contiguous slices. We believe by revealing the internal structure of the breast, the more subtle architecture of various types of suspicious lesions may be able to be better interpreted, which may ultimately increase cancer detection and reduce unnecessary patient callbacks. Our clinical results for FDA approval demonstrated that conventional 2D digital mammography with the addition of our Genius 3D Mammography is superior to 2D digital mammography alone for both screening and diagnostics.

C-View System

Our C-View product provides a 2D image that is mathematically synthesized from the data within a tomosynthesis exam. Our current recommended clinical practice involves what we refer to as a “combo” exam involving a tomosynthesis exam and a conventional digital 2D exam, but performed under the same breast compression. The C-View product allows for the mathematical construction of a 2D image from the tomosynthesis data, without the need for an actual 2D exposure. Elimination of the 2D exposure reduces the breast compression time and patient dose compared to the current combo exam.

Selenia

The Selenia product family is our original full field digital mammography platform. The Selenia product family includes the Selenia base configuration, the Selenia Value (a lower cost alternative to the Selenia base configuration) and a remanufactured Selenia system, each of which offer customers varying performance capabilities.

SecurView Workstation

The images captured by digital mammography systems are typically transmitted electronically for review by a radiologist at a work station. To this end, we developed the SecurViewDX breast imaging softcopy workstation, approved for interpretation of digital mammograms from most vendors as well as images from other diagnostic breast modalities. To complement this product, we also developed the SecurViewRT workstation, a technologist workstation enabling bi-directional exchange of electronic communications between the reviewer and the technologist.

CAD (Computer Aided Detection) Systems

We have developed CAD software tools for our mammography products and visualization tools for magnetic resonance imaging, or MRI. Mammography CAD is used by radiologists as “a second pair of eyes” when reading a woman’s mammogram. Use of this technology provides reviewers with the potential to detect findings that might otherwise be overlooked during the review process, thus potentially increasing cancer detection. We also market an MRI visualization product, which manages the data set from an MRI procedure, designed to improve data workflow for the physician and provide analytical tools to aid in the identification and evaluation of the extent of disease.

Stereotactic Breast Biopsy Systems

We provide clinicians with the flexibility of choosing upright or prone systems for breast biopsy by offering three minimally invasive stereotactic breast biopsy guidance systems: the MultiCare Platinum dedicated, prone breast biopsy table, the StereoLoc II upright attachment, and the Affirm upright attachment. The StereoLoc II attachment is used in conjunction with our Selenia systems. The Affirm upright attachment is employed with our Dimensions systems. These breast biopsy systems provide an alternative to open surgical biopsy and can be performed as an outpatient procedure under local

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anesthesia, allowing shorter recovery times. The Affirm tomosynthesis option provides faster lesion targeting and reduced patient procedure time compared to traditional stereotactic biopsy procedures. The Affirm system is pre-programmed for use with our Eviva and ATEC vacuum-assisted breast biopsy devices.

Breast Biopsy Products

We offer a wide range of minimally invasive products for breast biopsy and biopsy site marking. Our breast biopsy portfolio includes two types of tethered vacuum-assisted breast biopsy products, the Automated Tissue Excision Collection, or ATEC, and Eviva devices. Each tethered device is a disposable biopsy tool that is powered by a console and utilizes our patented fluid management system. The ATEC device can be used under all standard imaging guidance modalities (stereotactic x-ray, ultrasound, MRI and molecular breast imaging) whereas our Eviva device is used exclusively under stereotactic x-ray guidance. We also offer the Celero device, a non-tethered (no separate console), vacuum-assisted, spring-loaded, disposable core biopsy device, which is used exclusively under ultrasound-guidance.

GYN Surgical Products

NovaSure

The NovaSure system involves a minimally-invasive procedure that allows physicians to treat women suffering from abnormal uterine bleeding. The system consists of a disposable device and a controller that delivers radio frequency, or RF, energy to ablate the endometrial lining of the uterus in order to eliminate or reduce the patient’s bleeding. The NovaSure disposable device is a hand-held, single-use device that incorporates a flexible gold-plated mesh electrode used to deliver the RF energy during the NovaSure procedure. The NovaSure RF Controller generates and delivers the RF energy customized for each patient, monitors several critical treatment and safety parameters, and automatically controls other aspects of the procedure.

MyoSure

The MyoSure system is designed to provide efficient and effective hysteroscopic removal of fibroids located just below the lining of the uterus as well as uterine polyps and other pathology within the uterus. Removal of fibroids can provide effective relief of heavy menstrual bleeding commonly attributed to such pathology. Unlike other methods of tissue removal, the excavated tissue samples remain intact, which allows them to be tested for abnormalities.

The MyoSure system consists of a tissue removal device, control unit, and hysteroscope. The MyoSure tissue removal device is single-use and features simultaneous tissue cutting and removal. The device incorporates a rapidly rotating cutting blade designed to remove a 3 cm fibroid in less than 10 minutes. During the procedure, the tissue removal device is inserted through the MyoSure hysteroscope. This tissue removal device is powered by a control unit, which features a simple user interface and is foot pedal activated.

Skeletal Health Products

Discovery and Horizon X-Ray Bone Densitometers

Bone densitometry is the measurement of bone density to assist in the diagnosis and monitoring of osteoporosis and other metabolic bone diseases that can lead to debilitating bone fractures. Osteoporosis is a disease that is most prevalent in post-menopausal women. Our proprietary Discovery x-ray bone densitometers incorporate dual-energy x-ray technology to precisely assess bone density of the most important fracture sites, the spine and hip. Our Horizon line of x-ray bone densitometers incorporates advanced features and performance characteristics. We offer a range of bone densitometers with various features and options to address the requirements of our diverse customer base.

Mini C-arm Imaging

Our Fluoroscan mini C-arm imaging systems provide low intensity, real-time x-ray imaging, with high-resolution images at radiation levels and at a cost below those of conventional x-ray and fluoroscopic equipment. Mini C-arm systems are used primarily by orthopedic surgeons to assist in performing minimally invasive surgical procedures on a patient’s extremities, such as the hand, wrist, knee, foot and ankle.

Marketing, Sales and Service

We sell and service our products through a combination of direct sales and service forces and a network of independent distributors and sales representatives. In fiscal 2016, 2015, and 2014, no customer accounted for more than 10% of our consolidated revenues. In fiscal 2016, 2015, and 2014, revenues under our blood screening collaboration agreement, with Grifols, accounted for 18.8%, 20.9% and 18.8% of our Diagnostics segment revenue, respectively. In addition, in fiscal 2016, revenues from another customer accounted for 10.9% of our Diagnostics segment revenue. No other customer accounted for more than 10% of our revenues in any other business segment in fiscal 2016, 2015, or 2014. In fiscal 2016,

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2015, and 2014, international revenues accounted for 22.2%, 25.4% and 26.4% of our product sales, respectively. See Note 13 to our consolidated financial statements contained in Item 15 of this Annual Report for geographical information.

Our U.S. sales force is structured to specifically target the customers in each of our business segments. We maintain distinct teams focused on the Diagnostics, Breast Health, GYN Surgical, and Skeletal Health markets. A critical element of our strategy in the U.S. has been to utilize the results of our clinical trials and expanded FDA labeling to demonstrate safety, efficacy and productivity improvements to our target customers. Our end customers include clinical laboratories, hospitals, healthcare providers and surgeons in both hospital and office settings, and we target various specialists at healthcare entities who use our products, such as ob-gyns, radiologists and breast surgeons. Our U.S. sales efforts also include the use of national account managers focused on obtaining purchasing contracts from large purchasing entities, such as managed care organizations, integrated delivery networks and government healthcare facilities. In addition, in certain regions of the U.S., we use a limited number of independent dealers or distributors to sell and service certain of our products. Internationally, our products are marketed and sold through a combination of a direct sales force and a network of distributors.

Our service organization is responsible for installing our products and providing warranty and repair services, applications training and biomedical training. Products sold by our direct sales force typically carry limited warranties covering parts and labor for twelve months. Products sold through dealers also carry limited warranties that typically last for twelve months and cover only parts and components. We also offer service contracts that generally last one to five years after the original warranty period. We provide both repair services and routine maintenance services under these arrangements, and also offer repair and maintenance services on a time and materials basis to customers that do not have service contracts. Internationally, we primarily use distributors, sales representatives and third parties to provide maintenance service for our products.

Competition

The healthcare industry is highly competitive and characterized by continual change and improvements in technology. This is particularly the case in the market segments in which we operate. A number of companies have developed, or are expected to develop products that compete or will compete with our products. Many of these competitors offer a broader product portfolio and have greater brand recognition than we do, which may make these competitors more attractive to hospitals, radiology clients, group purchasing organizations, laboratories, physicians and other potential customers. Competitors may develop superior products or products of similar quality for sale at the same or lower prices. Moreover, our products could be rendered obsolete by changes to industry standards or guidelines or advances in technology. We can give no assurance that we will be able to compete successfully with existing or new competitors.

In the current environment of managed care, economically-motivated buyers, consolidation among healthcare providers, increased competition and declining reimbursement rates, we have been increasingly required to compete on the basis of price, value, reliability and efficiency. We believe the current global economic conditions and healthcare reform measures are putting additional competitive pressure on us, including on our average selling prices, overall procedure rates and market sizes.

We believe that the success of our products depends on our ability to differentiate ourselves and to demonstrate that our products deliver the clinical and operational attributes that are most important and cost-effective to customers. These attributes include, but are not limited to, superiority in efficacy, ease of use, reliability, accuracy, quality and cost. We believe our continued success depends in large part upon our ability to invest in product enhancements and technologies that will help us distinguish ourselves from our competitors.

Diagnostics. Our ThinPrep liquid-based cytology product faces direct competition in the U.S. primarily from Becton, Dickinson and Company, or BD, which manufactures a competitive offering. We also compete with the conventional Pap smear and other alternative methods for detecting cervical cancer and/or its precursors. Internationally, our ThinPrep product competes with a variety of companies and other non-FDA approved tests, since fewer regulatory barriers exist in most international markets as compared to the U.S.

We believe that our Rapid Fetal Fibronectin Test is currently the only approved in vitro diagnostic test for predicting the risk of pre-term birth in the U.S. Internationally, our Rapid Fetal Fibronectin Test competes with Actim Partus manufactured by Medix Biochemical. However, this product could experience competition from companies that manufacture and market pregnancy-related diagnostic products and services. In addition, healthcare providers use diagnostic techniques such as clinical examination and ultrasound to diagnose the likelihood of pre-term birth and may choose these techniques rather than use the Rapid Fetal Fibronectin Test.

In the molecular diagnostics market, our products compete with many companies in the U.S. and abroad engaged in the development, commercialization and distribution of similar products intended for clinical molecular diagnostic applications.

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Clinical laboratories also may offer testing services that are competitive with our products and may use reagents purchased from us or others to develop their own diagnostic tests.

In the global clinical diagnostics market, we compete with several companies offering alternative technologies to our diagnostic products. For example, in the U.S., our Aptima Combo 2 tests compete against BD and Roche Diagnostics Corporation, or Roche, and our Aptima HPV and Cervista HPV tests compete with tests marketed by Qiagen and Roche.

In the market for blood screening products, our primary competitor is Roche. We also compete with assays developed by blood screening centers and laboratories based on PCR technology. In the future, our blood screening products may compete with viral inactivation or reduction technologies and blood substitutes.

Breast Health. Our mammography and related products and subsystems compete on a worldwide basis with products offered by a number of competitors, including General Electric Company, or GE, Siemens, Koninklijke Philips NV, or Philips, Planmed Oy, or Planmed, Carestream Health, Inc., FUJIFILM Holdings Corporation, or Fuji, I.M.S., and Toshiba Corporation. In the U.S., our full field digital mammography systems compete with digital mammography systems from GE, Siemens, Fuji, I.M.S., Philips and Planmed. Our digital mammography systems also compete with Fuji’s and Carestream Health’s Computed Radiography, or CR mammography systems, and other lower-priced alternatives to 2D digital mammography and analog mammography systems. In the U.S., both GE and Siemens have received FDA approval for their breast tomosynthesis systems, and we believe that other competitors, including Fuji, are developing tomosynthesis systems for commercial use in the U.S. Our Dimensions tomosynthesis systems also compete in certain countries outside of the U.S. with tomosynthesis systems developed by GE, Siemens, Fuji, and I.M.S.

The primary competitor for our breast biopsy product line is Devicor Medical Products, Inc., part of Danaher Corporation's Leica Biosystems division. In addition, other competitors include CareFusion, a BD Company, Sanarus Technologies, LLC and Intact Medical Corporation.

GYN Surgical. Our NovaSure system currently faces direct competition from Boston Scientific Corporation, or Boston Scientific, The Cooper Companies, Inc., or CooperSurgical, and Minerva Surgical, Inc., or Minerva, each of which currently markets an FDA approved endometrial ablation device for the treatment of abnormal uterine bleeding. In addition to these devices, we also compete with alternative treatments to our NovaSure system, such as drug therapy, intrauterine devices, hysterectomy, dilation and curettage and rollerball ablation. Because drug therapy is an alternative to our NovaSure procedure, NovaSure’s competitors also include many major pharmaceutical companies that manufacture hormonal drugs for women.

Our MyoSure product competes directly with hysteroscopic loop resection, as well as hysteroscopic tissue removal systems such asMedtronic’s TruClear device and Boston Scientific's Symphion device. The MyoSure product also competes with alternative therapeutic techniques such as hysteroscopic resection with a monopolar or bipolar loop, which is currently the most common technique for removing intrauterine fibroids and polyps.

Skeletal Health. GE is our primary competitor in the bone densitometry market, and we also compete with Orthoscan in the mini-C arm market.

Manufacturing

We purchase many of the components, subassemblies, and raw materials used in our products from numerous suppliers worldwide. For reasons of quality assurance, scarcity and/or cost effectiveness, certain components, subassemblies, and raw materials used in our products are available only from one or a limited number of suppliers. We work closely with our suppliers to develop contingency plans to ensure continuity of high quality and reliable supply. We have established long-term supply contracts with many of our suppliers and in other instances, we have developed in-house capability to offset potential shortages caused by sole source suppliers. Due to the high standards and FDA requirements applicable to manufacturing our products, such as the FDA's Quality System Regulation and Good Manufacturing Practices, we may not be able to quickly establish additional or replacement sources for certain components or materials. In the event that we are unable to obtain sufficient quantities of raw materials or components or subassemblies on commercially reasonable terms or in a timely manner, our ability to manufacture our products on a timely and cost-competitive basis may be compromised, which may have a material adverse effect on our business, financial condition and results of operations.

Our current supplier of certain key raw materials for certain of our amplified NAT diagnostic assays is Roche Diagnostics Corporation. In addition, we have a supply and purchase agreement for oligonucleotides for HPV with Roche Molecular Systems, Inc. The parent company of both Roche Diagnostics Corporation and Roche Molecular Systems, Inc. is F. Hoffmann-La Roche Ltd, a direct competitor of our Diagnostics business. We also have a supply agreement with GE Healthcare Bio-Sciences Corp., an affiliate of GE, for membranes used in connection with our ThinPrep product line. GE is a

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direct competitor with our Breast Health and Skeletal Health businesses.

We have sole-source third-party contract manufacturers for each of our molecular diagnostics instrument product lines and for our Skeletal Health products. KMC Systems, Inc., or KMC Systems, is the only manufacturer of the Tigris instrument, Stratec Biomedical AG, or Stratec, is the only manufacturer of the Panther instrument and Flextronics International, LTD, or Flextronics, is the only manufacturer of our Skeletal Health finished goods products. We are dependent on these sole source third-party manufacturers, and this dependence exposes us to increased risks associated with production delays, delivery schedules, manufacturing capability, quality control, quality assurance and costs. We have no firm long-term volume commitments with either KMC Systems or Stratec. If KMC Systems, Stratec, Flextronics or any of our other third-party manufacturers experiences delays, disruptions, capacity constraints or quality control problems in its development or manufacturing operations or becomes insolvent or otherwise fails to supply us with products in sufficient quantities, instrument and equipment shipments to our customers could be delayed, which would decrease our revenues and may harm our competitive position and reputation. Further, because we place orders with our manufacturers based on forecasts of expected demand for our instruments and Skeletal Health products, if we inaccurately forecast demand we may be unable to obtain adequate manufacturing capacity or adequate quantities of components to meet our customers' delivery requirements.

We, and our contract manufacturers, manufacture our products at a limited number of different facilities located in the United States and throughout the world. In most cases, the manufacturing of each of our products is concentrated in one or a few locations. An interruption in manufacturing capabilities at any of these facilities, as a result of equipment failure or other reasons, could reduce, delay or prevent the production of our products. Some of our manufacturing operations are located outside of the U.S., including in Costa Rica and the United Kingdom. Those manufacturing operations are also subject to additional challenges and risks associated with international operations described under the caption “Risk Factors” in Item 1A below.

We continually review our operations and facilities in an effort to reduce costs and increase efficiencies. During fiscal 2015, we decided to shut down our Bedford, Massachusetts facility, outsource the manufacturing of our Skeletal Health products to Flextronics and transfer certain other manufacturing operations for our Breast Health segment to our Danbury, Connecticut and Marlborough, Massachusetts facilities. In addition, research and development, sales and service support and administrative functions have been or will be moved to Danbury and Marlborough. All manufacturing operations have been transferred as contemplated, and the full transition is expected to be substantially completed by the end of calendar year 2016. We may experience unexpected problems and expenses associated with our consolidation of operations and facilities that could materially harm our business and prospects.

From time to time new regulations are enacted that can affect the content and manufacturing of our products. We continue to evaluate the necessary steps for compliance with regulations as they are enacted. In August 2012, the SEC adopted a rule requiring disclosures of specified minerals, known as conflict minerals, that are necessary to the functionality or production of products manufactured or contracted to be manufactured by public companies. The conflict minerals rule requires companies annually to disclose and report whether or not such minerals originate from the Democratic Republic of Congo or an adjoining country. The conflict minerals rule could affect sourcing at competitive prices and availability in sufficient quantities of certain minerals used in the manufacture of our products, including tantalum, tin, gold and tungsten. The number of suppliers who provide conflict-free minerals may be limited. In addition, there may be material costs associated with complying with the disclosure requirements, such as costs related to determining the source of certain minerals used in our products, as well as costs of possible changes to products, processes, or sources of supply as a consequence of such verification activities. Since our supply chain is complex, we may not be able to sufficiently verify the origins of the relevant minerals used in our products through the due diligence procedures that we implement, which may harm our reputation. In addition, we may encounter challenges to satisfy those customers who require that all of the components of our products be certified as conflict-free, which could place us at a competitive disadvantage if we are unable to do so.

Other regulations which affect the content and manufacturing of our products include, for example, the Registration, Evaluation, Authorization and Restriction of Chemical substances, or REACH, the Restriction on the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Directive, or RoHS, and the Waste Electrical and Electronic Equipment Directive, or WEEE, enacted in the European Union which regulate the use of certain hazardous substances in, and require the collection, reuse and recycling of waste from, certain products we manufacture. Similar legislation that has been or is in the process of being enacted in Japan and China and various states of the U.S. may require us to re-design our products to ensure compliance with the applicable standards, for example by requiring the use of different types of materials. These redesigns or alternative materials may detrimentally impact the performance of our products, add greater testing lead-times for product introductions, result in additional costs or have other similar effects.

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Backlog

Our backlog as of October 23, 2016 and October 25, 2015 totaled $345.5 million and $408.9 million, respectively. The decrease in backlog from the prior year period was primarily driven by us implementing more restrictive criteria to be considered an order for purposes of this measure. Backlog consists of customer orders for which a delivery schedule within the next twelve months has been specified. Orders included in backlog may be canceled or rescheduled by customers without significant penalty. Backlog as of any particular date should not be relied upon as indicative of our net revenues for any future period.

Research and Development

The markets in which we participate are characterized by rapid technological change, frequent product introductions and evolving customer requirements. Investment in research and development is critical to driving our future growth. Our research and development efforts are focused on the further development and improvement of our existing products, the design and development of innovative medical technologies and regulatory compliance.

In addition to product development, our research and development personnel play an active role in the review of product specifications, clinical protocols and FDA submissions, as well as ensuring that certain of our products conform to European health, safety and environmental requirements, or CE-marking. Our research and development expenses were $232.1 million, $214.9 million and $203.2 million in fiscal 2016, 2015, and 2014, respectively.

Patents and Proprietary Rights

We rely primarily on a combination of trade secrets, patents, copyrights and confidentiality procedures to protect our products and technology. Due to the rapid technological changes that characterize the markets we operate in, we believe that the enhancement of existing products, reliance upon trade secrets and unpatented proprietary know-how and the development of new products are generally as important as patent protection in establishing and maintaining a competitive advantage. Nevertheless, we have obtained patents and will continue to make efforts to obtain patents, when available, in connection with our product development programs.

We own numerous U.S. patents and have applied for numerous additional U.S. patents relating to our technologies. We also own or have applied for corresponding patents in selected foreign countries. These patents relate to various aspects of most of our products. We do not know if current or future patent applications will issue with the full scope of the claims sought, if at all, or whether any patents issued will be challenged or invalidated. There is a risk that our patent applications will not result in granted patents or that granted patents will not provide significant protection for our products and technology. Unauthorized third parties may infringe our intellectual property rights, or copy or reverse engineer portions of our technology. Our competitors may independently develop similar or superior technology that our patents do not cover. In addition, because patent applications in the U.S. are not generally publicly disclosed until eighteen months after the application is filed, applications may have been filed by third parties that relate to our technology. Moreover, there is a risk that foreign intellectual property laws will not protect our intellectual property rights to the same extent as intellectual property laws in the U.S. The rights provided by a patent are finite in time. Over the coming years, certain patents relating to current products will expire in the U.S. and abroad thus allowing third parties to utilize certain of our technologies. In the absence of significant patent protection, we may be vulnerable to competitors who attempt to copy our products, processes or technology.

In addition to the patents we have been issued or we have acquired, we license patents from others on a variety of terms and conditions.

We are engaged in intellectual property litigation as described in Note 11 to our consolidated financial statements entitled “Litigation and Related Matters,” and we may be notified in the future of claims that we may be infringing intellectual property rights possessed by third-parties. In connection with any such litigation or if any claims are asserted against us or our products, we may seek to enter into settlement and/or licensing arrangements. There is a risk in these situations that no license will be available or that a license will not be available on reasonable terms. Alternatively, we may decide or be required to litigate such claims. A successful claim by a third-party may require us to remove the infringing product from the market or to design around the patented technology, potentially resulting in a less acceptable product.

Regulatory and Reimbursement

Regulatory

The manufacture, sale, lease and service of medical diagnostic and surgical devices intended for commercial use are subject to extensive governmental regulation by the FDA in the U.S. and by a variety of regulatory agencies in other countries. Under the Federal Food, Drug and Cosmetic Act, known as the FD&C Act, manufacturers of medical products and

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devices must comply with certain regulations governing the design, testing, manufacturing, packaging, servicing and marketing of medical products. Some of our products are also subject to the Radiation Control for Health and Safety Act, administered by the FDA, which imposes performance standards and record keeping, reporting, product testing and product labeling requirements for devices that emit radiation, such as x-rays. FDA product approvals may be withdrawn or suspended if compliance with regulatory standards is not maintained or if problems occur following initial marketing.

The FDA classifies medical devices into 3 classes based on risk. Regulatory control increases from Class I (lowest risk) to Class III (highest risk). The FDA generally must clear or approve the commercial sale of new medical devices in Classes II and III. Commercial sales of our Class II and III medical devices within the U.S. must be preceded by either a pre-market notification filing pursuant to Section 510(k) of the FD&C Act (Class II) or the granting of a pre-market approval, or PMA (Class III). Our Class I medical devices must follow Hologic’s internal Quality System processes prior to commercialization. All classes of devices must meet FDA's quality system (QS), establishment registration, medical device listing, labeling and medical device reporting (MDR) regulations.

A 510(k) pre-market notification filing must contain information establishing that the device to be sold is substantially equivalent to a device commercially distributed prior to May 28, 1976 or to a device that has been determined by the FDA to be substantially equivalent. The PMA procedure involves a complex and lengthy testing process that is subject to review by the FDA and may require several years to obtain. We may need to first obtain an investigational device exemption (for significant risk devices), known as an IDE, in order to conduct extensive clinical testing of the device to obtain the necessary clinical data for submission to the FDA. The FDA will approve a PMA only if after evaluating the supporting technical data it finds that the PMA contains sufficient, valid scientific evidence to assure that the device is safe and effective for its intended use(s). This approval may be granted with post-approval requirements including additional patient follow-up for an indefinite period of time.

The laboratories that purchase certain of our products, including the ThinPrep System, ThinPrep Imaging System, Rapid Fetal Fibronectin Test, Aptima Combo 2, Aptima HPV and Cervista HPV tests are subject to extensive regulation under the Clinical Laboratory Improvement Amendments of 1988, or CLIA, which requires laboratories to meet specified standards in the areas of personnel qualifications, administration, participation in proficiency testing, patient test management, quality control, quality assurance and inspections. Adverse interpretations of current CLIA regulations or future changes in CLIA regulations could have an adverse effect on sales of any affected products.

Our blood screening products are subject to extensive pre- and post-market regulation as biologics by the FDA, including regulations that govern the testing, manufacturing, safety, efficacy, labeling, storage, record keeping, advertising and promotion of the products under the FD&C Act and the Public Health Service Act, and by comparable agencies in most foreign countries. The process required by the FDA before a biologic may be marketed in the U.S. generally involves the completion of pre-clinical testing; the submission of an investigational new drug application which must become effective before clinical trials may begin; the performance of adequate and well controlled human clinical trials to establish the safety and effectiveness of the biologic’s proposed intended use; and the submission and approval of a Biologics License Application (BLA).

Certain analyte specific reagents, referred to as ASR products, as with other Class I products, may be sold without 510(k) clearance or PMA approval. However, ASR products are subject to significant restrictions. The manufacturer may not make clinical or analytical performance claims for the ASR product, may not promote their use with specific laboratory equipment and may only sell the ASR product to clinical laboratories that are qualified to run high complexity tests under CLIA. Each laboratory must validate the ASR product for use in diagnostic procedures as a laboratory developed test.

We are also subject to a variety of federal, state and foreign laws which broadly relate to our interactions with healthcare practitioners and other participants in the healthcare system, including, among others, the following:

• anti-kickback and anti-bribery laws, such as the Foreign Corrupt Practices Act, or FCPA, the UK’s Bribery Act 2010, or the UK Anti-Bribery Act;

• laws regulating the confidentiality of sensitive personal information and the circumstances under which such information may be released, such as the Health Insurance Portability and Accountability Act of 1996, or HIPAA, and the Health Information Technology for Economic and Clinical Health Act, or HITECH Act; and

• healthcare reform laws, such as the Patient Protection and Affordable Care Act and the Health Care and Education Affordability Reconciliation Act of 2010, which we refer to together as PPACA, which include new regulatory mandates and other measures designed to constrain medical costs, as well as stringent new reporting requirements of financial relationships between device manufacturers and physicians and teaching hospitals.

In addition, we are subject to numerous federal, state, foreign and local laws relating to safe working conditions, manufacturing practices, environmental protection, fire hazard control and disposal of hazardous or potentially hazardous

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substances, among others. We may be required to incur significant costs to comply with these laws and regulations in the future, and complying with these laws may result in a material adverse effect upon our business, financial condition and results of operations.

Sales of medical devices outside of the U.S. are subject to foreign requirements that vary widely from country to country. For example, our ability to market our products outside of the U.S. is contingent upon maintaining our International Standards Organization, or ISO, certification, complying with European directives and in some cases receiving specific marketing authorization from the appropriate foreign regulatory authorities. Foreign registration is an ongoing process as we register additional products and/or product modifications.

The time required to obtain approval from a foreign country to market and sell our products may be longer or shorter than that required for FDA approval and the requirements may differ. In addition, we may be required to meet the FDA’s export requirements or receive FDA export approval for the export of our products to foreign countries.

In 2012, the European Commission proposed two new regulations, one each for medical devices and In-vitro Diagnostics (IVD). The European regulators have now reached consensus on the texts for both new regulations and it is anticipated that they will become official at the beginning of 2017. There will be a three-year transition period for medical devices and a five-year transition period for IVDs. The adoption of these regulations may impact our international operations through a broadened scope of medical device and IVD oversight and/or regulatory reach. Compliance with the new European Commission regulations, if and when adopted, may impose additional administrative and financial burdens on us.

Federal, state and foreign regulations regarding the manufacture and sale of medical devices and pharmaceuticals are subject to future change. We cannot predict what impact, if any, such changes might have on our business.

For additional information about the regulations to which our business is subject and the impact such regulations may have on our business, see the disclosures under the caption “Risk Factors” in Item 1A below.

Reimbursement

Market acceptance of our medical products in the U.S. and other countries is dependent upon the purchasing and procurement practices of our customers, patient demand for our products and procedures, and the reimbursement of patients’ medical expenses by government healthcare programs, private insurers or other healthcare payors. In the U.S., the Centers for Medicare & Medicaid Services, known as CMS, establishes coverage policies and payment rates for Medicare beneficiaries. CMS publishes payment rates for physician, hospital, laboratory and ambulatory surgical center services on an annual basis. Under current CMS policies and regulations, varying payment levels have been established for tests and procedures performed using our products. Coverage policies for Medicare patients may vary by regional Medicare contractor in the absence of a national coverage determination and payment rates for procedures will vary based on the geographic price index. Coverage and reimbursement for patients with private insurance is dependent on the individual private payor’s decisions and may not follow the policies and rates established by CMS. Moreover, private insurance carriers may choose not to follow the CMS coverage policies or payment rates. The use of our products outside of the U.S. is similarly affected by reimbursement policies adopted by foreign regulatory authorities and insurance carriers.

Healthcare policy and payment reform proposals and medical cost containment measures are being adopted in the U.S. and in many foreign countries. The ability of our customers to obtain appropriate reimbursement for our products and services from private and governmental third-party payors is critical to the success of medical technology companies because it affects which products customers purchase and the prices they are willing to pay. Reimbursement and coverage varies by country and can significantly impact acceptance of new products and technologies. Even if we develop a promising new product, we may find limited demand for the product unless reimbursement approval and coverage is obtained from private and governmental third-party payors. Further legislative or administrative reforms to the reimbursement system in the United States and other countries in a manner that significantly reduces reimbursement for procedures using our medical products or denies coverage for those procedures facilitated by our products, including price regulation, competitive bidding and tendering, coverage and payment policies, comparative effectiveness of therapies, technology assessments and managed-care arrangements, could have a material adverse effect on our business, financial condition or results of operations.

Employees

As of September 24, 2016, we had approximately 5,333 full-time employees, including 1,458 in manufacturing operations, 759 in research and development, 2,487 in marketing, sales and support services, and 629 in general administration. The 59 non-management employees of our Hitec-Imaging subsidiary located in Germany are represented by a union and are subject to collective bargaining agreements. In addition, Hitec-Imaging’s German employees are represented by a works council, a Betriebsrat, with respect to various shop agreements for social matters and working conditions. We believe that our relationship with our employees is good. Except as described herein, none of our other employees are

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represented by a union.

Seasonality

Worldwide sales, including U.S. sales, do not reflect any significant degree of seasonality; however, customer purchases of our GYN Surgical products have been historically lower in our second fiscal quarter as compared to our other fiscal quarters. We expect continuing fluctuations in our manufacture and shipment of blood screening products and instruments to our blood screening collaborator, Grifols, which vary each period based on Grifols’ inventory levels and supply chain needs. Our respiratory infectious disease product line within our Diagnostics segment is also subject to significant seasonal and year-over-year fluctuations. In addition, the summer months, which occur during our fiscal fourth quarter, typically have had lower order rates internationally for most of our products.

Item  1A. Risk Factors

In evaluating our business, the risks described below, as well as other information contained in this Annual Report on Form 10-K and in our other filings with the Securities and Exchange Commission should be considered carefully. Additional risks not presently known to us or that we currently deem immaterial may also adversely affect our business. The occurrence of any of these events or circumstances could individually or in the aggregate have a material adverse effect on our business, financial condition, cash flow or results of operations. This report contains forward-looking statements; please refer to the cautionary statements made under the heading "Special Note Regarding Forward-Looking Statements" for more information on the qualifications and limitations on forward-looking statements.

Risks Relating to our Business

Our long-term success will depend upon our ability to successfully develop and commercialize new products and treatments and enhance our existing products and treatments; the internal research and development and external business development activities necessary to do so involve risk.

The markets for our products have been characterized by rapid technological change, frequent product introductions and evolving customer requirements. Our growth potential depends in large part on our ability to identify and develop new products or new indications for or enhancements of existing products, either through internal research and development or through collaborations, acquisitions, joint ventures or licensing or other arrangements with third parties. The development of new products and enhancement of existing products requires significant investment in research and development, clinical trials and regulatory approvals.

The results of our product development efforts may be affected by a number of factors, including our ability to anticipate customer needs, innovate and develop new products, complete clinical trials, obtain regulatory approvals and reimbursement in the United States and abroad, manufacture products in a cost-effective manner, obtain appropriate intellectual property protection for our products, gain and maintain market approval of our products and access capital. If we are not able to successfully enhance existing products or develop new products, our products may be rendered obsolete or uncompetitive by new industry standards or changing technology. We cannot assure that any products now in development or that we may seek to develop in the future will achieve technological feasibility, obtain regulatory approval or gain market acceptance, and we may be unable to recover all or a meaningful part of our investment in such products and technologies.

Additionally, as part of our long-term strategy, we are engaged in business development activities including evaluating acquisitions, joint development opportunities, technology licensing arrangements and other opportunities to further expand our presence in or diversify into priority growth areas by accessing new products and technologies. We may not be able to identify appropriate acquisition candidates, consummate transactions or obtain agreements with favorable terms. Further, once a business is acquired, any inability to successfully integrate the business, decreases in customer loyalty or product orders, failure to retain and develop the acquired workforce, failure to establish and maintain appropriate controls or unknown or contingent liabilities could adversely affect our ability to realize the anticipated benefits of any acquisition. The integration of an acquired business, whether or not successful, requires significant efforts which may result in additional expenses and divert the attention of our management and technical personnel from other projects. These transactions are inherently risky, and there can be no assurance that any past or future transaction will be successful.

If we are successful in pursuing future acquisitions, we may be required to expend significant funds, incur additional debt or other obligations, or issue additional securities, which may negatively affect our operating results and financial condition. If we spend significant funds or incur additional debt or other obligations, our ability to obtain financing for working capital or other purposes could be adversely affected, and we may be more vulnerable to economic downturns and competitive pressures.

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We cannot guarantee that we will be able to finance additional acquisitions or that we will realize any anticipated benefits from acquisitions that we complete.

If we fail to develop and successfully manufacture and launch new products, enhance existing products and identify, acquire and integrate complementary businesses, technologies and products, our business, results of operations and/or financial condition could be adversely affected.

International expansion is a key component of our growth strategy, although our international operations and foreign acquisitions expose us to additional operational challenges that we might not otherwise face.

We are focused on international expansion as a key component of our growth strategy and have identified specific areas of opportunity in various international markets. In fiscal 2016, 21.1% of our revenue came from outside of the U.S. If we fail to capitalize in the opportunities we have identified, our future growth may be materially adversely affected.

In addition, even if we do succeed in our plans to grow internationally, our future and existing international operations may subject us to a number of additional risks and expenses. Any of these risks or expenses could harm our operating results. These risks and expenses include:

• difficulties in developing staffing and simultaneously managing operations in multiple locations as a result of, among other things, distance, language and cultural differences;

• protectionist laws and business practices that favor local companies;

• difficulties in the collection of trade accounts receivable;

• difficulties and expenses related to implementing internal control over financial reporting and disclosure controls and procedures;

• expenses associated with customizing products for clients in foreign countries;

• possible adverse tax consequences;

• the inability to obtain required regulatory approvals or favorable third-party reimbursement;

• governmental currency controls;

• multiple, conflicting and changing government laws and regulations (including, among other things, antitrust and tax requirements);

• operation in parts of the world where strict compliance with anti-bribery laws may conflict with local customs and practices;

• political and economic changes and disruptions, export/import controls and tariff regulations;

• the inability to effectively obtain or enforce intellectual property rights, reduced protection for intellectual property rights in some countries, and otherwise protect against clone or “knock off” products; and

• the lack of ability to enforce non-compete agreements with former owners of acquired businesses competing with us in China and other foreign countries.

Our global operations are required to comply with the U.S. Foreign Corrupt Practices Act of 1977, as amended ("FCPA"), Chinese anti-corruption and similar anti-bribery laws in other jurisdictions and with U.S. and foreign export control, trade embargo and customs laws. If we fail to comply with any of these laws, we could suffer civil and criminal sanctions.

Additionally, the regulatory environment in China is evolving, and officials in the Chinese government exercise broad discretion in deciding how to interpret and apply regulations. It is possible that the Chinese government’s current or future interpretation and application of existing or new regulations will negatively impact our China operations, result in regulatory investigations or lead to fines or penalties.

Further, the June 2016 referendum in the United Kingdom ("UK") in which voters approved a withdrawal from the European Union, commonly referred to as “Brexit,” has created uncertainty. As a result of the referendum, it is expected that the British government will begin negotiating the terms of the UK’s exit from the European Union. Although it is unknown what those terms will be, it is possible that there will be greater restrictions on imports and exports between the UK and the European Union and increased regulatory complexities. We have a manufacturing facility in the UK. As a result of Brexit, we may face new regulatory costs and challenges that may have a material adverse effect on us and our operations.  For example, depending on the terms of Brexit, we could become subject to export tariffs and regulatory restrictions that could increase the costs and time related to doing business in Europe. Additionally, Brexit could result in the UK or the European Union significantly altering its regulations affecting the clearance or approval of our products that are developed or manufactured in the UK. Any new regulations could add time and expense to the conduct of our business, as well as the process by which our

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products receive regulatory approval in the UK, the European Union and elsewhere. Given the lack of comparable precedent, it is unclear what economic, financial, trade and legal implications the withdrawal of the UK from the European Union would have and how such withdrawal may affect us.

Changes in currency exchange rates may reduce the reported value of our revenues outside the U.S., net of expenses, and cash flows. We cannot predict changes in currency exchange rates, the impact of exchange rate changes, nor the degree to which we will be able to manage the impact of currency exchange rate changes. We currently have limited hedging arrangements in place to mitigate some of the impact of lower exchange rates.

Our success depends on our ability to attract and retain key personnel.

We constantly monitor the dynamics of the economy, the healthcare industry and the markets in which we compete, and we continue to assess our key personnel that we believe are essential to our long-term success. Over the last three years, we have effected a leadership change and have made significant organizational and strategic changes in connection therewith. If we fail to effectively manage our ongoing organizational and strategic changes, our financial condition, results of operations, and reputation, as well as our ability to successfully attract, motivate and retain key employees, could be harmed.

Moreover, in our industry, there is substantial competition for key personnel in the regions in which we operate and we may face increased competition for such employees. The loss of any of our key personnel, particularly management or key research and development personnel, could harm our business and prospects and could impede the achievement of our research and development, operational or strategic objectives. Our success also depends upon our ability to attract and retain other qualified managerial and technical personnel. Competition for such personnel is intense. We may not be able to attract and retain personnel necessary for the development of our business.

If we or our contract manufacturers are unable to manufacture our products in sufficient quantities, on a timely basis, at acceptable costs and in compliance with regulatory and quality requirements, our ability to sell our products and our business will be harmed.

The manufacture of many of our products is highly complex and requires precise high quality manufacturing that is difficult to achieve. We have in the past and may in the future experience difficulties in manufacturing our products on a timely basis and in sufficient quantities. These difficulties have primarily related to delays and difficulties associated with ramping up production of newly introduced products and may result in increased delivery lead-times and increased costs of manufacturing these products. In addition, production of these newer products may require the development of new manufacturing technologies and expertise, which we may be unable to develop. Our failure, including the failure of our contract manufacturers, to achieve and maintain the required high manufacturing standards could result in further delays or failures in product testing or delivery, cost overruns, product recalls or withdrawals, increased warranty costs or other problems that could harm our business and prospects.

In determining the required quantities of our products and the manufacturing schedule, we must make significant judgments and estimates based on historical experience, inventory levels, current market trends and other related factors. Because of the inherent nature of estimates, there could be significant differences between our estimates and the actual amounts of products we and our distributors require, which could harm our business and results of operations.

Blood screening, medical diagnostic and surgical device products are regulated by the FDA as well as other foreign medical regulatory bodies. In some cases, such as in the U.S. and the EU, certain products may also require individual lot release testing. Maintaining compliance with multiple regulators, and multiple centers within the FDA, adds complexity and cost to our manufacturing processes. In addition, our manufacturing facilities and those of our contract manufacturers are subject to periodic regulatory inspections by the FDA and other regulatory agencies, and these facilities are subject to the FDA's Quality System Regulation and Good Manufacturing Practices. We or our contractors may fail to satisfy these regulatory requirements in the future, and any failure to do so may prevent us from selling our products.

If, despite internal testing and testing by customers, any of our products contain errors or defects or fail to meet applicable specifications, then we may be required to enhance or improve those products or technologies. We may not be able to do so on a timely basis, if at all, and may only be able to do so at considerable expense.

Additionally, the FDA and similar governmental bodies in other countries have the authority to require the recall of medical products in the event of material deficiencies or defects in design or manufacture. A government mandated or voluntary recall by us could occur as a result of component failures, manufacturing errors or design defects, including defects in labeling. Any recall could divert managerial and financial resources, be difficult and costly to correct, result in the suspension of sales of certain of our products, harm our reputation and the reputation of our products and adversely affect our business and prospects.

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Our inability to obtain, or any delay in obtaining, any necessary U.S. or foreign regulatory clearances or approvals for our newly developed products and treatments or product enhancements could harm our business and prospects.

Our products and treatments are subject to a high level of regulatory oversight. Our inability to obtain, or any delay in obtaining, any necessary U.S. or foreign regulatory clearances or approvals for our newly developed products or product enhancements could harm our business and prospects. The process of obtaining clearances and approvals can be costly and time-consuming. In addition, there is a risk that any approvals or clearances, once obtained, may be withdrawn or modified.

Most medical devices cannot be marketed in the U.S. without 510(k) clearance or premarket approval by the FDA. Any modifications to a device that has received a pre-market approval that affect the safety or effectiveness of the device require a pre-market approval supplement or possibly a separate pre-market approval, either of which is likely to be time-consuming, expensive and uncertain to obtain. If the FDA requires us to seek one or more pre-market approval supplements or new pre-market approvals for any modification to a previously approved device, we may be required to cease marketing or to recall the modified device until we obtain approval, and we may be subject to significant criminal and/or civil sanctions, including, but not limited to, regulatory fines or penalties.

Medical devices sold in the U.S. must also be manufactured in compliance with FDA Good Manufacturing Practices, which regulate the design, manufacture, packing, storage and installation of medical devices. Moreover, medical devices are required to comply with FDA regulations relating to investigational research and labeling. States may also regulate the manufacture, sale and use of medical devices, particularly those that employ x-ray technology. Our products are also subject to approval and regulation by foreign regulatory and safety agencies.

Delays in receipt of, or failure to obtain, clearances or approvals for future products could delay or preclude realization of product revenues from new products or result in substantial additional costs which could decrease our profitability. In 2012, the European Commission proposed two new regulations, one each for medical devices and In-vitro Diagnostics (IVD). The adoption of these regulations may impact our international operations through a broadened scope of medical device and IVD oversight and/or regulatory reach. Compliance with the new European Commission regulations, if and when adopted, may impose additional administrative and financial burdens on us.

Security breaches and other disruptions could compromise our information, expose us to liability and harm our reputation and business.

In the ordinary course of our business we collect and store sensitive data, including intellectual property, personal information, our proprietary business information and that of our customers, suppliers and business partners, and personally identifiable information of our customers and employees in our data centers and on our networks. The secure maintenance and transmission of this information is critical to our operations and business strategy. We rely on commercially available systems, software, tools and monitoring to provide security for processing, transmission and storage of confidential information. Computer hackers may attempt to penetrate our computer systems and, if successful, misappropriate personal or confidential business information. In addition, an associate, contractor, or other third-party with whom we do business may attempt to circumvent our security measures in order to obtain such information, and may purposefully or inadvertently cause a breach involving such information. Any such compromise of our data security and access, public disclosure, or loss of personal or confidential business information could result in legal claims or proceedings, liability under laws that protect the privacy of personal information, and regulatory penalties, disrupt our operations, damage our reputation and customers’ willingness to transact business with us, and subject us to additional costs and liabilities any of which could adversely affect our business. Although we have experienced occasional, actual or attempted breaches of our computer systems, to date none of these breaches has had a material effect on our business, operations or reputation.

The continuing worldwide macroeconomic uncertainty may adversely affect our business and prospects.

Market acceptance of our medical products in the U.S. and other countries is dependent upon the medical equipment purchasing and procurement practices of our customers, patient demand for our products and procedures and the reimbursement of patients’ medical expenses by government healthcare programs and third-party payors. The continuing uncertainty surrounding world financial markets and continuing weak worldwide macroeconomic conditions have caused and may continue to cause the purchasers of medical equipment to decrease their medical equipment purchasing and procurement activities. Economic uncertainty as well as increasing health insurance premiums and co-payments may continue to result in cost-conscious consumers making fewer elective trips to their physicians and specialists, which in turn would adversely affect demand for our products and procedures. Job losses or slow improvement in the unemployment rate in the U.S. as a result of current macroeconomic conditions may result in a smaller percentage of our patients being covered by an employer health group and a larger percentage being covered by lower paying Medicare and Medicaid programs. Furthermore, governments and other third-party payors around the world facing tightening budgets could move to further reduce the reimbursement rates or the scope of coverage offered, which could adversely affect sales of our products. If the current adverse macroeconomic conditions continue, our business and prospects may be negatively impacted.

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The failure of third-party payors to provide appropriate levels of coverage and reimbursement for the use of our products and treatments facilitated by our products could harm our business and prospects.

Sales and market acceptance of our medical products and the treatments facilitated by our products is dependent upon the coverage decisions and reimbursement policies established by government healthcare programs and private health insurers. The ability of customers to obtain appropriate reimbursement for the products and services they use from private and governmental third-party payors is critical to the success of medical technology companies because it affects which products customers purchase and the prices they are willing to pay. Reimbursement varies by country and can significantly impact the acceptance of new products and technologies. Even if we develop a promising new product, we may find limited demand for the product unless appropriate reimbursement approval is obtained from private and governmental third-party payors. Further legislative or administrative reforms to the reimbursement systems in the United States and other countries in a manner that significantly reduces reimbursement for procedures using our medical products or denies coverage for those procedures facilitated by our products, including price regulation, competitive bidding and tendering, coverage and payment policies, comparative effectiveness of therapies, technology assessments and managed-care arrangements, could have a material adverse effect on our business, financial condition or results of operations.

Healthcare policy changes, including healthcare reform legislation and the uncertainty surrounding the implementation of any such legislation, could harm our business and prospects.

The Patient Protection and Affordable Care Act, as amended by the Health Care and Education Affordability Reconciliation Act (collectively, “the Healthcare Reform Act”) was enacted into law in the United States in March 2010. As a U.S. headquartered company with significant sales in the United States, the medical device tax included in this law has materially affected us. The law imposed on medical device manufacturers a 2.3 percent excise tax on U.S. sales of Class I, II and III medical devices beginning in January 2013. As such, this excise tax applied to the majority, if not all of our products sold in the U.S. Effective January 1, 2016, the implementation of the medical device tax was suspended for calendar years 2016 and 2017. The status of the tax for sales after December 31, 2017 is not clear, and the tax may continue to be suspended or may be reinstated at the same or at a different level.

The law also includes regulatory mandates and other measures designed to constrain medical costs, as well as stringent reporting requirements of financial relationships between device manufacturers and physicians and teaching hospitals. Specifically, under one provision of the law, which is commonly referred to as the Physician Payment Sunshine Act, we are required to collect data on and annually report to CMS certain payments or other transfers of value to physicians and teaching hospitals and annually report certain ownership and investment interests held by physicians or their immediate family members.

Compliance with this healthcare legislation, including with these reporting requirements and the excise tax, imposed significant additional administrative and financial burdens on us. Various healthcare reform proposals have also emerged at the state level in the U.S. The Healthcare Reform Act and these proposals could reduce medical procedure volumes and impact the demand for our products or the prices at which we sell our products. These reforms include a national pilot program on payment bundling to encourage hospitals, physicians and other providers to improve the coordination, quality and efficiency of certain healthcare services through bundled payment models. In addition, while the excise tax was in effect, it increased our costs of doing business. The impact of this healthcare reform legislation, and practices including price regulation, competitive pricing, comparative effectiveness of therapies, technology assessments, and managed care arrangements could harm our business and prospects, results of operations and/or financial condition. Healthcare reform proposals and medical cost containment measures in the U.S. and in many foreign countries could:

• limit the use of our products and treatments;

• reduce reimbursement available for such use;

• further tax the sale or use of our products;

• adversely affect the use of new therapies for which our products may be targeted; and

• further increase the administrative and financial burden of compliance.

These reforms, cost containment measures and new taxes, including the uncertainty in the medical community regarding their nature and effect, could also have an adverse effect on our customers’ purchasing decisions regarding our products and treatments and could harm our business, results of operations, financial condition and prospects. We cannot predict the specific healthcare programs and regulations that will be ultimately implemented by regional and national governments globally. However, any changes that lower reimbursements for our products and/or procedures using our products, reduce medical procedure volumes or increase cost containment pressures on us or others in the healthcare sector could adversely affect our business and results of operations.

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We operate in a highly regulated industry, and changes in healthcare-related laws and regulations could adversely affect our revenues and profitability.

We operate in a highly regulated industry. As a result, governmental actions may adversely affect our business, operations or financial condition, including:

• new laws, regulations or judicial decisions, or new interpretations of existing laws, regulations or decisions, related to healthcare availability, method of delivery and payment for healthcare products and services;

• changes in the FDA and foreign regulatory approval processes that may delay or prevent the approval of new products and treatments and result in lost market opportunity;

• changes in FDA and foreign regulations that may require additional safety monitoring, labeling changes, restrictions on product distribution or use, or other measures after the introduction of our products and treatments to market, which could increase our costs of doing business, adversely affect the future permitted uses of approved products or treatments, or otherwise adversely affect the market for our products and treatments; and

• new laws, regulations and judicial decisions affecting pricing or marketing practices.

We anticipate that governmental authorities will continue to scrutinize the healthcare industry closely and that additional regulation by governmental authorities may cause increased compliance costs, exposure to litigation and other adverse effects to our operations.

Guidelines, recommendations and studies published by various organizations may reduce the use of our products.

Professional societies, government agencies, practice management groups, private health/science foundations, and organizations involved in healthcare issues may publish guidelines, recommendations or studies to the healthcare and patient communities. Recommendations of government agencies or these other groups/organizations may relate to such matters as usage, cost-effectiveness, and use of related therapies. Organizations like these have in the past made recommendations about our products and those of our competitors. Recommendations, guidelines or studies that are followed by healthcare providers and insurers could result in decreased use of our products. For example, in November 2012, the American Congress of Obstetrics and Gynecologists, known as the ACOG, released updates in which they have recommended less frequent cervical cancer screening similar to guidelines released in March 2012 by the U.S. Preventative Services Task Force and the American Cancer Society. We believe that these recommendations and guidelines may have contributed to increased screening intervals for cervical cancer, which we believe has and may continue to adversely affect our ThinPrep revenues. In addition, on October 20, 2015, the American Cancer Society issued new guidelines recommending that women start annual mammograms at age 45 instead of 40 and have a mammogram every two years instead of annually. This recommendation could result in a decrease in purchases of our mammography systems.

Consolidation in the healthcare industry could lead to increased demands for price concessions or the exclusion of some suppliers from certain of our significant market segments, which could harm our business and prospects.

The cost of healthcare has risen significantly over the past decade and numerous initiatives and reforms by legislators, regulators and third-party payors to curb these costs have resulted in a consolidation trend in the healthcare industry, including with respect to hospitals and clinical laboratories. This consolidation has resulted in greater pricing pressures, decreased average selling prices, and the exclusion of certain suppliers from important market segments as group purchasing organizations, independent delivery networks and large single accounts continue to consolidate purchasing decisions for some of our customers. We expect that market demand, government regulation, third-party reimbursement policies, government contracting requirements, and societal pressures will continue to change the worldwide healthcare industry, resulting in further business consolidations and alliances among our customers and competitors, which may reduce competition and continue to exert further downward pressure on the prices of our products and adversely impact our business, financial condition or results of operations. In particular, we are dependent upon a relatively small number of large clinical laboratory customers in the U.S. for a significant portion of our sales of diagnostics products. Due in part to a trend toward consolidation of clinical laboratories in recent years and the relative size of the largest U.S. laboratories, it is likely that a significant portion of these sales will continue to be concentrated among a relatively small number of large clinical laboratories.

Interruptions, delays, shutdowns or damage at our manufacturing facilities could harm our business.

We and our contract manufacturers manufacture our products at a limited number of different facilities located in the United States and throughout the world. In most cases, the manufacturing of each of our products is concentrated in one or a few locations. An interruption in manufacturing capabilities at any of these facilities, as a result of equipment failure or other reasons, could reduce, delay or prevent the production of our products. Our manufacturing facilities and those of our contract manufacturers are subject to the risk of catastrophic loss due to unanticipated events, such as fires, earthquakes, explosions, floods or weather conditions. Manufacturing facilities may experience plant shutdowns, strikes or other labor disruptions, or

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periods of reduced production as a result of equipment failures, loss of power, gray outs, delays in deliveries or extensive damage, which could harm our business and prospects. Some of our manufacturing operations are located outside the U.S., including in Costa Rica and the United Kingdom. Those manufacturing operations are also subject to additional challenges and risks associated with international operations described herein.

Our Diagnostics segment depends on a small number of customers for a significant portion of its product sales, the loss of any of these customers or any cancellation or delay of a large purchase by any of these customers could significantly reduce revenues in our Diagnostics segment.

Although we do not currently have any customers that represent more than 10% of our consolidated revenues, a material portion of product sales in our Diagnostics segment comes from a limited number of customers. We have long-term commitments with some of our Diagnostics’ customers. Our collaboration agreement with Grifols and product sales from another customer each resulted in revenues of more than 10% of our Diagnostics segment's total revenues. Product sales from our blood screening collaboration with Grifols accounted for 18.8%, 20.9% and 18.8% of our Diagnostics segment revenue in fiscal 2016, 2015, and 2014, respectively. In fiscal 2016, it is our understanding that our blood screening collaboration was largely dependent on four significant customers of Grifols: The American Red Cross, Creative Testing Solutions, Biomat and The Japanese Red Cross. We do not receive any revenues directly from those entities. In addition, in fiscal 2016, revenues from another customer accounted for 10.9% of our Diagnostics segment revenue. We anticipate that our operating results in our Diagnostics segment will continue to depend, to a significant extent, upon revenues from a small number of customers. The loss of any of these key customers, or a significant reduction in sales volume or pricing to these customers, could significantly reduce our Diagnostics segment revenues or profitability.

If we cannot maintain our current corporate collaborations and enter into new corporate collaborations, our product development could be delayed and our revenue could be adversely impacted.

With respect to certain of our products we have relied, to a significant extent, on corporate collaborators for funding development and marketing as well as distribution. For example, in our Diagnostics business we are dependent on Grifols to distribute the blood screening products we manufacture. Commercial blood screening product sales to Grifols accounted for 18.8%, 20.9%, and 18.8% of our Diagnostics segment revenue in fiscal 2016, 2015, and 2014, respectively. If our blood screening collaboration with Grifols is terminated and not replaced, our revenues could be adversely affected. In addition, we expect to rely on our corporate collaborators for the commercialization of certain products. If any of our corporate collaborators were to breach or terminate its agreement with us or otherwise fail to conduct its collaborative activities successfully and in a timely manner, the development or commercialization and subsequent marketing of the products contemplated by the collaboration could be delayed or terminated. We cannot control the amount and timing of resources our corporate collaborators devote to our programs or potential products.

The continuation of any of these collaboration agreements depends upon their periodic renewal by us and our collaborators. If any of our current collaboration agreements are terminated, or if we are unable to renew those collaborations on acceptable terms, we may be required to devote additional internal resources to product development or marketing or to terminate some development programs or seek alternative corporate collaborations. In addition, in the event of a dispute under our current or any future collaboration agreements, a court or arbitrator may not rule in our favor and our rights or obligations under an agreement subject to a dispute may be adversely affected, which may have an adverse effect on our business or operating results. Any corporate collaboration may divert management time and resources. In some instances we have entered into corporate collaborations, including alliances and joint ventures, with certain partners or companies that could make it more difficult for us to enter into advantageous business transactions or relationships with others.

Failing to manage a collaboration effectively, failing to comply with the obligations associated with a collaboration, or entering into a disadvantageous corporate collaboration, could harm our business and prospects.

Some of our activities may subject us to risks under federal and state laws prohibiting “kickbacks” and false or fraudulent claims.

We are subject to the provisions of a federal law commonly known as the anti-kickback statute, and several similar state laws, which prohibit payments intended to induce physicians or others either to refer patients or to acquire or arrange for or recommend the acquisition of healthcare products or services. While the federal law applies only to products or services for which payment may be made by a federal healthcare program, state laws often apply regardless of whether federal funds may be involved. These laws constrain the sales, marketing and other promotional activities of manufacturers of medical devices by limiting the kinds of financial arrangements, including sales programs that may be used with hospitals, physicians, laboratories and other potential purchasers of medical devices. Other federal and state laws generally prohibit individuals or entities from knowingly presenting, or causing to be presented, claims for payment from Medicare, Medicaid, or other third-party payors that are false or fraudulent, or are for items or services that were not provided as claimed. Anti-kickback and false claims laws prescribe civil and criminal penalties (including fines) for noncompliance that can be substantial.

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Similarly, our international operations are subject to the provisions of the FCPA, which prohibits U.S. companies and their representatives from offering, promising, authorizing, or making payments to foreign officials for the purpose of influencing any act or decision of such official in his or her official capacity, inducing the official to do any act in violation of his or her lawful duty, or to secure any improper advantage in obtaining or retaining business. In many countries, the healthcare professionals we regularly interact with may meet the definition of a foreign official for purposes of the FCPA. In addition to the FCPA, our international operations are also subject to various other international anti-bribery laws such as the UK Anti-Bribery Act. Our policies mandate compliance with these anti-bribery laws. However, despite meaningful measures that we undertake to facilitate lawful conduct, which include training and compliance programs and internal policies and procedures, we may not always prevent unauthorized, reckless or criminal acts by our employees or agents, or employees or agents of businesses or operations we may acquire. It is possible that our practices might be challenged under federal or state anti-kickback, FCPA or similar laws due to the breadth of the statutory provisions and the absence of extensive guidance regarding compliance. Violations of these laws, or allegations of such violations, could disrupt our operations, involve significant management distraction and have a material adverse effect on our business, financial condition and results of operations. We also could be subject to adverse publicity, severe penalties, including criminal and civil penalties, disgorgement, further changes or enhancements to our procedures, policies and controls, personnel changes and other remedial actions. Moreover, our failure to comply with domestic or foreign laws could result in various adverse consequences, including possible delay in approval or refusal to approve a product, recalls, seizures, and withdrawal of an approved product from the market.

The markets for our newly developed products and treatments and newly introduced enhancements to our existing products and treatments may not develop as expected.

The successful commercialization of our newly developed products and treatments and newly introduced enhancements to our existing products and treatments are subject to numerous risks, both known and unknown, including:

• uncertainty of the development of a market for such product or treatment;

• trends relating to, or the introduction or existence of, competing products, technologies or alternative treatments or therapies that may be more effective, safer or easier to use than our products, technologies, treatments or therapies;

• the perception of our products or treatments as compared to other products and treatments;

• recommendation and support for the use of our products or treatments by influential customers, such as hospitals, radiological practices, breast surgeons and radiation oncologists and treatment centers;

• the availability and extent of data demonstrating the clinical efficacy of our products or treatments;

• competition, including the presence of competing products sold by companies with longer operating histories, more recognizable names and more established distribution networks; and

• other technological developments.

Often, the development of a significant market for a product or treatment will depend upon the establishment of a reimbursement code or an advantageous reimbursement level for use of the product or treatment. Moreover, even if addressed, such reimbursement codes or levels frequently are not established until after a product or treatment is developed and commercially introduced, which can delay the successful commercialization of a product or treatment.

If we are unable to successfully commercialize and create a significant market for our newly developed products and treatments and newly introduced enhancements to our existing products and treatments our business and prospects could be harmed.

Our business is dependent on technologies we license, and if we fail to maintain these licenses or license new technologies and rights to particular nucleic acid sequences for targeted diseases in the future, we may be limited in our ability to develop new products.

Our business is dependent on licenses from third parties for some of our key technologies. For example, our patented TMA technology is based on technology we licensed from Stanford University. We anticipate that we will enter into new licensing arrangements in the ordinary course of business to expand our product portfolio and access new technologies to enhance our products and develop new products. Many of these licenses will provide us with exclusive rights to the subject technology or disease marker. If our license with respect to any of these technologies or markers is terminated for any reason, we may not be able to sell products that incorporate the technology. Similarly, we may lose competitive advantages if we fail to maintain exclusivity under an exclusive license.

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Additionally, the U.S. Supreme Court has issued several decisions, the full impact of which is not yet known. For example, in March 2012 in Mayo Collaborative Services, DBA Mayo Medical Laboratories, et al. v. Prometheus Laboratories, Inc., the Court held that several claims drawn to measuring drug metabolite levels from patient samples and correlating them to drug doses were not patentable subject matter. The decision appears to impact diagnostics patents that merely apply a law of nature via a series of routine steps and has created uncertainty around the patentability of certain biomarker-related method claims. Additionally, in June 2013 in Association for Molecular Pathology v. Myriad Genetics, Inc., the Court held that claims to isolated genomic DNA are not patentable, but claims to complementary DNA, or cDNA, molecules were held to be valid. The effect of the decision on patents for other isolated natural products is uncertain and we may lose competitive advantages should the subject matter of our patents or patents we exclusively license be deemed non-patentable subject matter and we therefore fail to maintain exclusivity to such subject matter as a result.

Our ability to develop additional diagnostic tests for diseases may depend on the ability of third parties to discover particular sequences or markers and correlate them with disease, as well as the rate at which such discoveries are made. Our ability to design products that target these diseases may depend on our ability to obtain the necessary rights from the third parties that make any of these discoveries. In addition, there are a finite number of diseases and conditions for which our NAT diagnostic assays may be economically viable. If we are unable to access new technologies or the rights to particular sequences or markers necessary for additional diagnostic products on commercially reasonable terms, we may be limited in our ability to develop new diagnostic products.

Our products and manufacturing processes will require access to technologies and materials that may be subject to patents or other intellectual property rights held by third parties. We may need to obtain additional intellectual property rights in order to commercialize our products. We may be unable to obtain such rights on commercially reasonable terms or at all, which could adversely affect our ability to grow our business.

Our business could be harmed if we are unable to protect our proprietary technology.

We have relied primarily on a combination of trade secrets, patents, copyrights and confidentiality procedures to protect our products and technology. Despite these precautions, unauthorized third parties may infringe our intellectual property, or copy or reverse engineer portions of our technology. The pursuit and assertion of a patent right, particularly in areas like nucleic acid diagnostics and biotechnology, involve complex determinations and, therefore, are characterized by substantial uncertainty. We do not know if current or future patent applications will be issued with the full scope of the claims sought, if at all, or whether any patents that do issue will be challenged or invalidated. The patents that we own or license could also be subject to interference proceedings or similar disputes over the priority of the inventions, and an unfavorable outcome could require us to cease using the related technology or to attempt to license rights to the technology from the prevailing party. In addition, the laws governing patentability and the scope of patent coverage continue to evolve, particularly in the field of biotechnology. As a result, patents might not issue from certain of our patent applications or from applications licensed to us.

We have obtained or applied for corresponding patents and patent applications in several foreign countries for some of our U.S. patents and patent applications. There is a risk that these patent applications will not be granted or that the patent or patent application will not provide significant protection for our products and technology. Moreover, there is a risk that foreign intellectual property laws will not protect our intellectual property rights to the same extent as intellectual property laws in the U.S.

The rights provided by a patent are finite in time. Over the coming years, certain patents relating to current products will expire in the U.S. and abroad thus allowing third parties to utilize certain of our technologies.

Our competitors may independently develop similar or superior technology that our patents do not cover. In addition, because patent applications in the U.S. are not generally publicly disclosed until eighteen months after the application is filed, applications may have been filed by third parties that relate to our technology. Even if our proprietary information is protected by patents or otherwise, the initiation of actions to protect our proprietary information could be costly and divert the efforts and attention of our management and technical personnel, and the outcome of such litigation is often uncertain. As a result of these uncertainties, we could also elect to forego such litigation or settle such litigation without fully enforcing our proprietary rights. In the absence of significant patent protection, we may be vulnerable to competitors who attempt to copy our products, processes or technology.

Additionally, the effect of the Prometheus Laboratories and Myriad Genetics decisions on patents for other isolated natural products is uncertain and these decisions could increase the uncertainties and costs surrounding the prosecution of our patent applications and the enforcement or defense of our issued patents, all of which could have a material adverse effect on our business and financial condition.

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Our business could be harmed if we infringe upon the intellectual property rights of others.

There has been substantial litigation regarding patent and other intellectual property rights in the medical device, diagnostic products and related industries. We are and have been involved in patent litigation, and may in the future be subject to further claims of infringement of intellectual property rights possessed by third parties.

In connection with claims of patent infringement, we may seek to enter into settlement and/or licensing arrangements. There is a risk in these situations that no license will be available or that a license will not be available on reasonable terms. Alternatively, we may decide to litigate such claims or to design around the patented technology. These actions could be costly and would divert the efforts and attention of our management and technical personnel. As a result, any infringement claims by third parties or claims for indemnification by customers resulting from infringement claims, whether or not proven to be true, may harm our business and prospects.

We utilize distributors for a portion of our sales, the loss of which could harm our revenues in the territory serviced by these distributors.

We rely on strategic relationships with a number of key distributors for sales and service of our products. For example, in our Diagnostics business we are dependent on Grifols to distribute the blood screening products we manufacture. Commercial blood screening product sales to Grifols accounted for 18.8%, 20.9% and 18.8% of our Diagnostics segment revenue in fiscal 2016, 2015 and 2014, respectively. If our blood screening relationship or any of our other strategic relationships are terminated and not replaced or if our strategic partners fail to perform their contractual obligations, our revenues and/or ability to service our products in the territories serviced by these distributors could be adversely affected. If any of our distribution or marketing agreements are terminated, particularly our blood screening collaboration agreement, or if we elect to distribute new products directly, we will have to invest in additional sales and marketing resources, including additional field sales personnel, which would significantly increase future selling, general and administrative expenses. We may not be able to enter into new distribution or marketing agreements on satisfactory terms, or at all. If we fail to enter into acceptable distribution or marketing agreements or fail to successfully market our products, our product sales will decrease. We may also be exposed to risks as a result of transitioning a territory from a distributor sales model to a direct sales model, such as difficulties maintaining relationships with specific customers, hiring appropriately trained personnel or ensuring compliance with local product registration requirements, any of which could result in lower revenues than previously received from the distributor in that territory.

We have only one third-party manufacturer for certain of our product lines and rely on one or a limited number of suppliers for some key raw materials, components or subassemblies for our products. This reliance exposes us to increased risks associated with production delays, delivery schedules, manufacturing capability, quality control, quality assurance and costs.

Certain of our raw materials, components or subassemblies are purchased from a single-source due to cost, quality, expertise or other considerations. Obtaining alternative sources of supply of these raw materials, components or subassemblies could involve significant delays and other costs and regulatory challenges, and may not be available to us on reasonable terms, if at all. The failure of a supplier to provide sufficient quantities, acceptable quality and timely delivery of goods at an acceptable price, or an interruption in the delivery of goods from such a supplier could harm our business and prospects. Any disruption of supplies of goods could delay or reduce shipments, which could result in lost or deferred sales.

For example, we have sole-source third-party manufacturers for each of our molecular diagnostics instruments and for our Skeletal Health products. KMC Systems, Inc., or KMC Systems, is the only manufacturer of the Tigris instrument, Stratec Biomedical AG, or Stratec, is the only manufacturer of the Panther instrument and Flextronics International LTD, or Flextronics, is the only manufacturer of our Skeletal Health finished goods products. We have no firm long-term volume commitments with either KMC Systems or Stratec. If KMC Systems, Stratec, Flextronics or any of our other third-party manufacturers experiences delays, disruptions, capacity constraints or quality control problems in its development or manufacturing operations or becomes insolvent or otherwise fails to supply us with goods in sufficient quantities, then instrument shipments to our customers could be delayed, which would decrease our revenues and harm our competitive position and reputation. Further, because we place orders with our manufacturers based on forecasts of expected demand for our products, if we inaccurately forecast demand we may be unable to obtain adequate manufacturing capacity or adequate quantities of components to meet our customers' delivery requirements.

Similarly, we rely on one or a limited number of suppliers for some key raw materials for our products and some of these suppliers are competitors. For example, our current supplier of certain key raw materials for certain of our amplified NAT diagnostic assays, pursuant to a fixed-price contract, is Roche Diagnostics Corporation and we have a supply and purchase agreement for oligonucleotides for HPV with Roche Molecular Systems, Inc. The parent company of both Roche Diagnostics Corporation and Roche Molecular Systems, Inc. is F. Hoffmann-LaRoche Ltd, a direct competitor of our Diagnostics business.

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We also have a supply agreement with GE Healthcare Bio-Sciences Corp., an affiliate of GE, for membranes used in connection with our ThinPrep product line. GE is a direct competitor with our Breast Health and Skeletal Health businesses.

We may in the future need to find new contract manufacturers or suppliers to replace existing manufacturers or suppliers, increase our volumes or reduce our costs. We may not be able to find contract manufacturers or suppliers that meet our needs, and even if we do the process is expensive and time consuming. If we are required or elect to change contract manufacturers or suppliers, we may lose revenues and our customer relationships may suffer.

We may experience unexpected problems and expenses associated with our planned consolidation of operations and facilities that could materially harm our business and prospects.

We continually review our operations and facilities in an effort to reduce costs and increase efficiencies. To that end, during fiscal 2015, we decided to shut down our Bedford, Massachusetts facility, outsource the manufacturing of our Skeletal Health products to a third party and transfer certain other manufacturing operations for our Breast Health segment to our Danbury, Connecticut and Marlborough, Massachusetts facilities. In addition, research and development, sales and service support and administrative functions have been or will be moved to Danbury and Marlborough. All manufacturing operations have been transferred as contemplated, and the full transition is expected to be substantially completed by the end of calendar year 2016. Uncertainty is inherent within the consolidation process, and unforeseen circumstances, costs and expenses could offset the anticipated benefits, disrupt operations, including the timely delivery of products and service to customers, and impact product quality, which could materially harm our business and prospects. In addition, we may fail to retain key employees who possess specific knowledge or expertise and who we depend upon for the timely and successful transition, we may not be able to attract a sufficient number of skilled workers at the new locations to handle the additional production and other demands, and the relocation may absorb significant management and key employee attention and resources. If any of these risks materialize, our business, results of operations, financial condition and prospects may be adversely affected.

We face intense competition from other companies and may not be able to compete successfully.

A number of companies have developed, or are expected to develop, products that compete or will compete with our products. In addition, some companies may have significant competitive advantages over us, which may make them more attractive to hospitals, radiology clients, group purchasing organizations, laboratories, and physicians, including:

• greater brand recognition;

• larger or more established distribution networks and customer bases;

• a broader product portfolio, resulting in the ability to offer rebates or bundle products to offer discounts or incentives to gain a competitive advantage;

• higher levels of automation and greater installed bases of such equipment;

• more extensive research, development, sales, marketing, and manufacturing capabilities and greater financial resources; and

• greater technical resources positioning them to continue to improve their technology in order to compete in an evolving industry.

The markets in which we sell our products are intensely competitive, subject to rapid technological change and may be significantly affected by new product introductions and other market activities of industry participants, and these competitive pressures may reduce our gross margins. Other companies may develop products that are superior to and/or less expensive than our products. Improvements in existing competitive products or the introduction of new competitive products may reduce our ability to compete for sales, particularly if those competitive products demonstrate better safety or effectiveness, clinical results, ease of use or lower costs.

The current environment of managed care, economically-motivated buyers, consolidation among healthcare providers, increased competition and declining reimbursement rates, together with current global economic conditions and healthcare reform measures, may put additional competitive pressure on us, including on our average selling prices, overall procedure rates and market sizes.

If we are unable to compete effectively against existing and future competitors and existing and future alternative products and treatments, our business and prospects could be harmed.

Our results of operations are subject to significant quarterly variation.

Our results of operations have been and may continue to be subject to significant quarterly variation. Our results for a particular quarter may also vary due to a number of factors, including:

• the overall state of healthcare and cost containment efforts;

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• the timing and level of reimbursement for our products domestically and internationally;

• the development status and demand for our products;

• the development status and demand for therapies to treat the health concerns addressed by our products and treatments;

• economic conditions in our markets;

• foreign exchange rates;

• the timing of orders;

• the timing of expenditures in anticipation of future sales;

• the mix of products we sell and markets we serve;

• regulatory approval of products;

• the introduction of new products and product enhancements by us or our competitors;

• pricing and other competitive conditions;

• unanticipated expenses;

• complex revenue recognition rules pursuant to U.S. generally accepted accounting principles, which we refer to as U.S. GAAP;

• asset impairments;

• contingent consideration charges;

• restructuring and consolidation charges;

• debt refinancing charges and expenses; and

• seasonality of sales of certain of our products.

Customers may also cancel or reschedule shipments. Production difficulties could also delay shipments. Any of these factors also could harm our business and prospects.

Failure to comply with laws relating to the confidentiality of sensitive personal information or standards related to the transmission of electronic health data, may require us to make significant changes to our products, or incur penalties or other liabilities.

State, federal and foreign laws, such as the federal Health Insurance Portability and Accountability Act of 1996, or HIPAA, regulate the confidentiality of sensitive personal information and the circumstances under which such information may be released. These measures may govern the disclosure and use of personal and patient medical record information and may require users of such information to implement specified security measures, and to notify individuals in the event of privacy and security breaches. Evolving laws and regulations in this area could restrict the ability of our customers to obtain, use or disseminate patient information, or could require us to incur significant additional costs to re-design our products in a timely manner to reflect these legal requirements, either of which could have an adverse impact on our results of operations. Other health information standards, such as regulations under HIPAA, establish standards regarding electronic health data transmissions and transaction code set rules for specified electronic transactions, for example transactions involving submission of claims to third party payors. These standards also continue to evolve and are often unclear and difficult to apply. In addition, under the federal Health Information Technology for Economic and Clinical Health Act, or HITECH Act, some of our businesses that were previously only indirectly subject to federal HIPAA privacy and security rules became directly subject to such rules because the businesses may be deemed to serve as “business associates” to certain of our customers. In January 2013, the Office for Civil Rights of the Department of Health and Human Services released a final rule implementing the HITECH Act and making certain other changes to HIPAA privacy and security requirements. Compliance with the rule increases the requirements applicable to some of our businesses. Failure to maintain the confidentiality of sensitive personal information in accordance with the applicable regulatory requirements, or to abide by electronic health data transmission standards, could expose us to breach of contract claims, fines and penalties, costs for remediation and harm to our reputation.

We are subject to the risk of product liability claims relating to our products.

Our business involves the risk of product liability and other claims inherent to the medical device business. If even one of our products is found to have caused or contributed to injuries or deaths, we could be held liable for substantial damages. We maintain product liability insurance subject to deductibles and exclusions. There is a risk that the insurance coverage will not be sufficient to protect us from product and other liability claims, or that product liability insurance will not be available to us at a

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reasonable cost, if at all. An under-insured or uninsured claim could harm our business and prospects. In addition, claims could adversely affect the reputation of the related product, which could damage that product’s competitive position in the market.

The sale and use of our diagnostic products could also lead to the filing of product liability claims if someone were to allege that one of our products contained a design or manufacturing defect that resulted in inaccurate test results or the failure to detect a disorder for which it was being used to screen, or caused injuries to a patient. Any product liability claim brought against us, with or without merit, could result in an increase in our product liability insurance rates or the inability to secure additional coverage in the future. Also, even a meritless or unsuccessful product liability claim could be time consuming and expensive to defend, which could result in a diversion of management’s attention from our business and could adversely affect the perceived safety and efficacy of our products, and could harm our business and prospects.

Regulations related to “conflict minerals” may cause us to incur additional expenses and could limit the supply and increase the cost of certain metals used in manufacturing our products.

In August 2012, the SEC adopted a rule requiring disclosures of specified minerals, known as conflict minerals, that are necessary to the functionality or production of products manufactured or contracted to be manufactured by public companies. The conflict minerals rule requires companies annually to diligence, disclose and report whether or not such minerals originate from the Democratic Republic of Congo and other specified countries. The rule could affect sourcing at competitive prices and availability in sufficient quantities of certain minerals used in the manufacture of our products, including tantalum, tin, gold and tungsten. The number of suppliers who provide conflict-free minerals may be limited. In addition, there may be material costs associated with complying with the disclosure requirements, such as costs related to determining the source of certain minerals used in our products, as well as costs of possible changes to products, processes, or sources of supply as a consequence of such verification activities. Since our supply chain is complex, we may not be able to sufficiently verify the origins of the relevant minerals used in our products through the due diligence procedures that we implement, which may harm our reputation. In addition, we may encounter challenges to satisfy those customers who require that all of the components of our products be certified as conflict-free, which could place us at a competitive disadvantage if we are unable to do so.

We are subject to environmental, health and safety laws and regulations, including related to our use and recycling of hazardous materials and the composition of our products.

Our research and development and manufacturing processes involve the controlled use of hazardous materials, such as toxic and carcinogenic chemicals and various radioactive compounds, and the risk of contamination or injury from these materials cannot be eliminated. In such event, we could be held liable for any resulting damages, and any such liability could be extensive. From time to time new regulations are enacted, and it is difficult to anticipate how such regulations will be implemented and enforced. We continue to evaluate the necessary steps for compliance with regulations as they are enacted. These regulations include, for example, regulations enacted in the European Union such as the Registration, Evaluation, Authorization and Restriction of Chemical Substances, or REACH, which requires the registration of and regulates use of certain chemicals, the Restriction on the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Directive, or RoHS, which regulates the use of certain hazardous substances in certain products we manufacture, and the Waste Electrical and Electronic Equipment Directive, or WEEE, which requires the collection, reuse and recycling of waste from certain products we manufacture. These and similar legislation that has been or is in the process of being enacted in Japan, China and various states of the U.S. may require us to re-design our products to ensure compliance with the applicable standards, for example by requiring the use of different types of materials. These redesigns or the use of alternative materials may detrimentally impact the performance of our products, add greater testing lead-times for product introductions, result in additional costs or have other similar effects. We are also subject to other substantial regulation relating to environmental, health and safety matters, including occupational health and safety, environmental protection, hazardous substance control, and waste management and disposal. The failure to comply with such regulations could subject us to, among other things, fines and criminal liability. We may also be required to incur significant costs to comply with these and future regulations, which may result in a material adverse effect upon our business, financial condition and results of operation.

We may incur losses in excess of our insurance coverage.

Our insurance coverage includes product liability, property, fire, terrorism and business interruption policies. Our insurance coverage contains policy limits, specifications and exclusions. We believe that our insurance coverage is consistent with general practices within our industry. Nonetheless, we may incur losses of a type for which we are not covered by insurance or which exceed the limits of liability of our insurance policies. In that event, we could experience a significant loss which could have a material adverse impact on our financial condition.

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An adverse change in the projected cash flows from our business units or the business climate in which they operate, including the continuation of the current financial and economic uncertainty, could require us to record an impairment charge, which could have an adverse impact on our operating results.

At least annually, we review the carrying value of our goodwill, and for other long-lived assets when indicators of impairment are present, to determine if any adverse conditions exist or a change in circumstances has occurred that would indicate impairment of the value of these assets. Conditions that could indicate impairment and necessitate an evaluation of these assets include, but are not limited to, a significant adverse change in the business climate or the legal or regulatory environment within which we operate. In addition, the deterioration of a company’s market capitalization significantly below its net book value is an indicator of impairment. We assess goodwill for impairment at the reporting unit level and in evaluating the potential impairment of goodwill, we make assumptions regarding the amount and timing of future cash flows, terminal value growth rates and appropriate discount rates.

Based on performing a quantitative analysis, all of our reporting units passed Step 1 of the goodwill impairment test in fiscal 2016. For illustrative purposes, had the fair value of each of the reporting units been lower by 10%, all of the reporting units would still have passed Step 1 of the goodwill impairment test. Although we believe that we use reasonable methodologies for developing assumptions and estimates underlying the fair value calculations used in our impairment tests, these estimates are uncertain by nature and can vary from actual results. It is possible that the continuation of the current global financial and economic uncertainty could negatively affect our anticipated future cash flows, or the discount rates used to value the cash flows for each reporting unit, to such an extent that we could be required to perform an interim impairment test during fiscal 2017.

Our effective tax rate may fluctuate and we may incur obligations in tax jurisdictions in excess of amounts that have been accrued.

As a global company, we are subject to taxation in numerous countries, states and other jurisdictions. In preparing our financial statements, we record the amount of tax payable in each of the countries, states and other jurisdictions in which we operate. Our future effectivetax rate, however, may be lower or higher than prior years due to numerous factors, including a change in our geographic earnings mix, changes in the measurement of our deferred taxes, and recently enacted and future tax law changes in jurisdictions in which we operate. We are also subject to ongoing tax audits in various jurisdictions, and tax authorities may disagree with certain positions we have taken and assess additional taxes. Any of these factors could cause us to experience an effective tax rate significantly different from previous periods or our current expectations, which could adversely affect our business, results of operations, and cash flows.

Risks Relating to our Indebtedness

We incurred significant indebtedness in order to finance the acquisition of Gen-Probe in fiscal 2012, which may limit our operating flexibility, and could adversely affect our operations and financial results and prevent us from fulfilling our obligations.

As of September 24, 2016, we had approximately $3.41 billion aggregate principal of indebtedness. We also have other contractual obligations and deferred tax liabilities. This significant level of indebtedness and our other obligations may:

• make it more difficult for us to satisfy our obligations with respect to our outstanding indebtedness;

• increase our vulnerability to general adverse economic and industry conditions, including increases in interest rates;

• require us to dedicate a substantial portion of our cash flow from operations to interest and principal payments on our indebtedness, which will reduce the availability of our cash flow to fund working capital, capital expenditures, expansion efforts, acquisitions and other general corporate purposes;

• limit our flexibility in planning for, or reacting to, changes in our business and the markets in which we participate;

• place us at a competitive disadvantage compared to our competitors that have less debt; and

• limit our ability to borrow additional funds for working capital, capital expenditures, expansion efforts, acquisitions or other general corporate purposes.

In addition, the terms of our credit facilities require us to meet certain financial covenants that are customary with these types of credit facilities, which are described in Note 4 “Borrowings and Credit Agreements” in the accompanying notes to the consolidated financial statements included in Item 15 of this Annual Report. Our ability to comply with these covenants may be adversely affected by general economic conditions, industry conditions and other events beyond our control. If we are unable to comply with these covenants, we could default under the credit facilities, which could cause us to be unable to borrow

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additional amounts under the credit facilities and may result in the acceleration of the maturity of our outstanding indebtedness under the facilities. If the maturities were accelerated, we may not have sufficient funds available for repayment, and if we were unable to make additional borrowings under the facilities, we may not be able to make investments in our business to support our strategy or we may end up in bankruptcy proceedings, or other processes, in which our business would be negatively impacted. In addition, our shareholders could be adversely impacted as shareholder value could decrease. Each scenario would result in significant negative implications to our liquidity and results of operations.

Further, the terms of our indebtedness contain covenants that restrict our ability, and that of our subsidiaries, to engage in certain transactions and may impair our ability to respond to changing business and economic conditions, including, among other things, limitations on our ability to:

• incur indebtedness or issue certain preferred equity;

• pay dividends, repurchase our common stock or make other distributions or restricted payments;

• make certain investments;

• agree to payment restrictions affecting the restricted subsidiaries;

• sell or otherwise transfer or dispose of assets, including equity interests of our subsidiaries;

• enter into transactions with our affiliates;

• create liens;

• designate our subsidiaries as unrestricted subsidiaries;

• consolidate, merge or sell substantially all of our assets; and

• use the proceeds of permitted sales of our assets.

If there were an event of default under one of our debt instruments or a change of control, the holders of the defaulted debt could cause all amounts outstanding with respect to that debt to be due and payable immediately and may be cross-defaulted to other debt, including our senior notes. Our assets or cash flow may not be sufficient to fully repay borrowings under our outstanding debt instruments if accelerated upon an event of default or a change of control, and there is no guarantee that we would be able to repay, refinance or restructure the payments on such debt. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations-Liquidity and Capital Resources.”

We may not be able to generate sufficient cash flow to service all of our indebtedness and other obligations.

Our ability to make payments on and to refinance our indebtedness and to fund planned capital expenditures, strategic transactions and expansion efforts will depend on our ability to generate cash in the future. This, to a certain extent, is subject to general economic, financial, competitive, legislative, regulatory and other factors that are beyond our control.

Our business may not be able to generate sufficient cash flow from operations, and we can give no assurance that future borrowings will be available to us in amounts sufficient to enable us to pay our indebtedness as such indebtedness matures and to fund our other liquidity needs. If this occurs, we will need to refinance all or a portion of our indebtedness on or before maturity, and there can be no assurance that we will be able to refinance any of our indebtedness on commercially reasonable terms, or at all. We may need to adopt one or more alternatives, such as reducing or delaying planned expenses and capital expenditures, selling assets, restructuring debt, or obtaining additional equity or debt financing. These alternative strategies may not be affected on satisfactory terms, if at all. Our ability to refinance our indebtedness or obtain additional financing, or to do so on commercially reasonable terms, will depend on, among other things, our financial condition at the time, restrictions in agreements governing our indebtedness, and other factors, including the condition of the financial markets and the markets in which we compete.

If we do not generate sufficient cash flow from operations, and additional borrowings, refinancings or proceeds from asset sales are not available to us, we may not have sufficient cash to enable us to meet all of our obligations.

A significant portion of our indebtedness is subject to floating interest rates, which may expose us to higher interest payments.

A significant portion of our indebtedness is subject to floating interest rates, which makes us more vulnerable in the event of adverse economic conditions, increases in prevailing interest rates, or a downturn in our business. As of September 24, 2016, approximately $1.61 billion aggregate principal of our indebtedness, which represents the outstanding principal under our Term Loan under our Credit Agreement and amounts outstanding under our Accounts Receivable Securitization Program, was subject to floating interest rates. We currently have limited hedging arrangements in place to mitigate the impact of higher interest rates. The interest rate cap agreements have a December 2017 termination date, and we may not be able to extend these at an attractive economic price.

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Risks Relating to our Common Stock

Future issuances of common stock and hedging activities may depress the trading price of our common stock and our convertible notes.

Any future issuance of equity securities, including the issuance of shares upon conversion of our convertible notes, could dilute the interests of our existing stockholders, including holders who have received shares upon conversion of our convertible notes, and could substantially decrease the trading price of our common stock and our convertible notes. We may issue equity securities in the future for a number of reasons, including to finance our operations and business strategy (including in connection with acquisitions, strategic collaborations or other transactions), to adjust our ratio of debt to equity, to satisfy our obligations upon the exercise of outstanding warrants or options or for other reasons.

In addition, the price of our common stock could also be affected by possible sales of our common stock by investors who view our convertible notes as a more attractive means of equity participation in our company and by hedging or arbitrage trading activity that may develop involving our common stock. The hedging or arbitrage could, in turn, affect the trading price of our convertible notes, or any common stock that note holders receive upon conversion of their notes.

Provisions in our charter, bylaws, and indebtedness may have the effect of discouraging advantageous offers for our business or common stock and limit the price that investors might be willing to pay in the future for shares of our common stock.

Our charter, bylaws, and the provisions of the Delaware General Corporation Law include provisions that may have the effect of discouraging or preventing a change of control. Our indebtedness also contains provisions which either accelerate or require us to offer to repurchase the indebtedness at a premium upon a change of control. These provisions could limit the price that our stockholders might receive in the future for shares of our common stock.

Our stock price is volatile.

The market price of our common stock has been, and may continue to be, highly volatile. We believe that a variety of factors could cause the price of our common stock to fluctuate, perhaps substantially, including:

• new, or changes in, recommendations, guidelines or studies that could affect the use of our products;

• announcements and rumors of developments related to our business, including changes in reimbursement rates or regulatory requirements, proposed and completed acquisitions, or the industry in which we compete;

• published studies and reports relating to the comparative efficacy of products and markets in which we participate;

• quarterly fluctuations in our actual or anticipated operating results and order levels;

• general conditions in the worldwide economy;

• our stock repurchase program;

• announcements of technological innovations;

• new products or product enhancements by us or our competitors;

• developments in patents or other intellectual property rights and litigation;

• developments in relationships with our customers and suppliers;

• the implementation of healthcare reform legislation and the adoption of additional reform legislation in the future; and

• the success or lack of success of integrating our acquisitions.

The price of our common stock also may be adversely affected by the amount of common stock issuable upon conversion of our convertible notes. In addition, in recent years the stock market in general and the markets for shares of “high-tech” companies, have experienced extreme price fluctuations which have often been unrelated to the operating performance of affected companies. Any such fluctuations in the future could adversely affect the market price of our common stock, and the market price of our common stock may decline.

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Our convertible notes may adversely affect our earnings per share.

Any conversion of the convertible notes could cause dilution to our stockholders and to our earnings per share in the event the Company decided to settle such conversion in shares. In addition, because of the type of instrument and our accounting policy for settling the principal in cash, for any period in which we have reported net income, if the average trading price of our common stock for that period exceeds the conversion price of any of our convertible notes, the convertible notes of that class will increase our diluted share count and may result in lower reported diluted earnings per share. Our outstanding convertible notes at September 24, 2016 in the principal amount of $12.3 million, $363.4 million and $370.0 million, respectively, have conversion prices of $23.03, $31.175 and $38.59, respectively.

Item  1B. Unresolved Staff Comments

None.

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Item  2. Properties

We own and lease the real property identified below. We believe that we have adequate space for our anticipated needs and that suitable additional space will be available at commercially reasonable prices as needed.

Principal Properties Owned:	Primary Use	Floor Space
Newark, DE (a)	DirectRay digital detector research and development and plate manufacturing operations	164,000 sq. ft.
Warstein, Germany	Hitec-Imaging’s manufacturing operations, research and development and administrative functions	201,000 sq. ft.
Londonderry, NH	Manufacturing operations	47,000 sq. ft.
San Diego, CA (b)	Diagnostics headquarters, including research and development, administrative and manufacturing operations	262,000 sq. ft.
San Diego, CA (b)(c)	Diagnostics headquarters, including research and development, administrative and manufacturing operations	290,000 sq. ft.
San Diego, CA (b)	Manufacturing operations for blood screening products	94,000 sq. ft.

Principal Properties Leased:	Primary Use	Floor Space	Lease Expiration (fiscal year)	Renewals
Bedford, MA (d)	Administrative, research and development, and manufacturing operations	207,000 sq. ft.	2022	4, five-yr. periods
Danbury, CT	Manufacturing facility	62,000 sq. ft.	2022	4, five-yr. periods
Danbury, CT	Manufacturing operations and research and development	60,000 sq. ft.	2021	1, five-yr. period
Marlborough, MA	Headquarters, including research and development, manufacturing and distribution operations	216,000 sq. ft.	2019	2, five-yr. periods
Marlborough, MA	Manufacturing operations	146,000 sq. ft.	2024	1, five-yr. period
Methuen, MA	Main Distribution facility	38,000 sq. ft.	2018	1, five-yr. period
Alajuela, Costa Rica	Manufacturing facility	164,000 sq. ft.	2018	2, five-yr. periods
Manchester, England	Manufacturing operations and research and development	66,000 sq. ft.	2035	None

____________

(a) We currently occupy approximately 59,000 square feet of this building, which houses our plate manufacturing facility, including both a Class 1 and a Class 2 clean room. We lease approximately 105,000 square feet of the facility to Siemens under a lease, which expires in April 2020.

(b) Subject to a mortgage to secure obligations under our senior secured credit facilities.

(c) We currently occupy approximately 221,000 square feet of this building, with the remaining space available to accommodate future growth.

(d) During fiscal 2015, we decided to shut down our Bedford, Massachusetts facility and outsource the manufacturing of certain of our Skeletal Health products to a third party and transfer certain other manufacturing operations for our Breast Health segment to our Danbury, Connecticut and Marlborough, Massachusetts facilities. In addition, research and development, sales and service support and administrative functions will be moved to Danbury and Marlborough. This transition is expected to be completed by the end of calendar year 2016, although all manufacturing operations have been transitioned.

We lease other facilities utilized for office space and manufacturing and distribution operations across the United States, Europe, Canada and China. We also lease several sales and service offices throughout the world.

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Item  3. Legal Proceedings

For a discussion of legal matters as of September 24, 2016, please see Note 11 to our consolidated financial statements entitled “Litigation and Related Matters,” which is incorporated by reference into this item.

Item  4. Mine Safety Disclosures

Not Applicable.

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PART II

Item  5. Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Market Information. Our common stock is traded on the Nasdaq Global Select Market under the symbol “HOLX.” The following table sets forth the high and low sales prices per share of our common stock, as reported by the Nasdaq Global Select Market.

Fiscal Year Ended September 24, 2016	High		Low
First Quarter	$	41.66	$	36.29
Second Quarter	39.94		31.84
Third Quarter	38.09		32.64
Fourth Quarter	39.35		32.81
Fiscal Year Ended September 26, 2015	High		Low
First Quarter	$	27.35	$	22.70
Second Quarter	33.33		25.60
Third Quarter	38.55		32.12
Fourth Quarter	43.00		35.80

Number of Holders. As of November 11, 2016, there were approximately 1,142 holders of record of our common stock, including multiple beneficial holders at depositories, banks and brokers listed as a single holder in the street name of each respective depositary, bank or broker.

Dividend Policy. We have never declared or paid cash dividends on our capital stock, and we currently have no plans to do so. Our current policy is to retain all of our earnings to finance future growth, pay down our existing indebtedness and repurchase our common stock. The existing covenants under our debt instruments also place limits on our ability to issue dividends and repurchase stock.

Recent Sales of Unregistered Securities. We did not sell unregistered equity securities during the fourth quarter of fiscal 2016.

Issuer's Purchases of Equity Securities

Period of Repurchase	Total Number of Shares Purchased (#) (1)	Average Price Paid Per Share ($) (1)		Total Number of Shares Purchased As Part of Publicly Announced Plans or Programs  (#) (2)	Average Price Paid Per Share As Part of Publicly Announced Plans or Programs  ($) (2)		Maximum Number (or Approximate Dollar Value) of Shares That May Yet Be Purchased Under Our Programs (in millions) ($) (2)
June 26, 2016 – July 23, 2016	4,269	$	34.82	—	$	—	$	500.0
July 24, 2016 – August 20, 2016	2,474	38.86		—	—		500.0
August 21, 2016 – September 24, 2016	2,675	38.48		—	—		500.0
Total	9,418	$	36.92	—	$	—	$	500.0

 ___________________________________

(1) For the majority of restricted stock units granted, the number of shares issued on the date that the restricted stock units vest is net of the minimum statutory tax withholding requirements that we pay in cash to the appropriate taxing authorities on behalf of our employees. These repurchases of our common stock were to cover employee income tax withholding obligations in connection with the vesting of restricted stock units under our equity incentive plans.

(2) On June 21, 2016, the Board of Directors authorized the repurchase of up to $500.0 million of our outstanding common stock over the next five years. Through September 24, 2016, we had not repurchased any shares of our common stock under this program.

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Stock Performance Graph

The following information shall not be deemed to be "filed" with the SEC nor shall the information be incorporated by reference into any future filings under the Securities Act of 1934, as amended, except to the extent that we specifically incorporate it by reference into a document filed under the Securities Act of 1933 or the Securities Exchange Act of 1934.

The following graph compares cumulative total shareholder return on our common stock since September 24, 2011 with the cumulative total return of the Russell 1000 Index and the Standard & Poor’s Health Care Supplies Index. This graph assumes the investment of $100 on September 24, 2011 in our common stock, the Russell 1000 Index and the S&P Health Care Supplies Index. Measurement points are the last trading day of each respective fiscal year.

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Item  6. Selected Financial Data

The following selected financial data should be read in conjunction with our consolidated financial statements and related notes appearing elsewhere in this Annual Report on Form 10-K, beginning on page F-1. In the fourth quarter of fiscal 2012, we acquired Gen-Probe Incorporated. Results of operations for this business are included in our consolidated financial statements from the date of acquisition.

	Fiscal Years Ended
	September 24, 2016 (5)		September 26, 2015 (4)		September 27, 2014 (3)		September 28, 2013 (2)			September 29, 2012 (1)
	(In millions, except per share data)
Consolidated Statement of Operations Data
Total revenues	$	2,832.7	$	2,705.0	$	2,530.7	2,492.3			$	2,002.6
Total operating costs and expenses	$	2,284.1	$	2,249.9	$	2,251.0	3,398.5			$	1,888.9
Net income (loss)	$	330.8	$	131.6	$	17.3	(1,172.8		)	$	(73.6	)
Basic net income (loss) per common share	$	1.18	$	0.47	$	0.06	(4.36		)	$	(0.28	)
Diluted net income (loss) per common share	$	1.16	$	0.45	$	0.06	(4.36		)	$	(0.28	)
Consolidated Balance Sheet Data
Working capital	$	424.7	$	322.4	$	946.2	$	535.8		$	901.7
Total assets (6)	$	7,317.0	$	7,642.5	$	8,368.7	$	8,936.9		$	10,393.1
Long-term debt obligations, less current portion (7)	$	3,058.7	$	3,227.3	$	4,117.7	$	4,193.8		$	4,903.5
Total stockholders’ equity	$	2,142.7	$	2,079.2	$	2,063.0	$	1,941.5		$	2,961.0

____________

(1) Fiscal 2012 total operating costs and expenses include charges for contingent consideration of $119.5 million related to certain of our acquisitions, restructuring and divestiture charges of $36.6 million and acquisition transaction costs related to the Gen-Probe acquisition of $34.3 million. Included in net loss was a debt extinguishment loss of $42.3 million.

(2) Fiscal 2013 total operating costs and expenses include a goodwill impairment charge of $1.1 billion, which related to our Molecular Diagnostics reporting unit within our Diagnostics reportable segment, contingent consideration of $91.3 million related to certain of our acquisitions, restructuring and divestiture charges of $32.8 million partially offset by a net gain on the sale of intellectual property of $53.9 million.

(3) Fiscal 2014 total operating costs and expenses include restructuring and divestiture charges of $51.7 million and intangible asset impairment charges of $32.2 million.

(4) Fiscal 2015 total operating costs and expenses include restructuring and divestiture charges of $28.5 million. Included in net income was a debt extinguishment loss of $62.7 million and related transaction costs of $9.3 million.

(5) Fiscal 2016 total operating costs and expenses include restructuring and divestiture charges of $10.5 million. Included in net income was a gain on the sale of a marketable security of $25.1 million partially offset by a debt extinguishment loss of $5.3 million.

(6) Total assets have been recast for fiscal 2015 through 2012 to reflect the Company's adoption of ASU No. 2015-03, Presentation of Debt Issuance Costs.

(7) Long-term obligations have been recast for fiscal 2015 through 2012 to reflect the adoption of ASU 2015-03 and are net of unamortized debt discounts and deferred issuance costs aggregating $62.9 million, $95.7 million, $166.2 million, $217.7 million and $271.6 million for fiscal years 2016, 2015, 2014, 2013 and 2012, respectively.

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Item  7. Management's Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis should be read in conjunction with the Consolidated Financial Statements, the information described under the caption “Risk Factors” in Part I, Item 1A of this report and our Special Note Regarding Forward-Looking Statements at the outset of this report.

OVERVIEW

We are a developer, manufacturer and supplier of premium diagnostics products, medical imaging systems and surgical products with an emphasis on women's health. We operate in four segments: Diagnostics, Breast Health, GYN Surgical and Skeletal Health. We sell and service our products through a combination of direct sales and service personnel and a network of independent distributors and sales representatives.

We offer a wide range of diagnostic products which are used primarily to aid in the diagnosis of human diseases and screen donated human blood and plasma. Our primary diagnostics products include our Aptima family of assays, which run on our advanced instrumentation systems (Panther and Tigris), our ThinPrep system, the Rapid Fetal Fibronectin Test and our Procleix blood screening assays. The Aptima family of assays is used to detect the infectious microorganisms that cause the common sexually transmitted diseases, or STDs, chlamydia and gonorrhea, certain high-risk strains of human papillomavirus, or HPV, and Trichomonas vaginalis, the parasite that causes trichomoniasis. The ThinPrep System is primarily used in cytology applications, such as cervical cancer screening, and the Rapid Fetal Fibronectin Test assists physicians in assessing the risk of pre-term birth. In blood screening, we develop and manufacture the Procleix family of assays, which are used to detect various infectious diseases. The Procleix blood screening assays also run on our Panther and Tigris systems. These blood screening products are marketed worldwide by our blood screening collaborator, Grifols S.A., or Grifols, under Grifols' trademarks.

Our Breast Health products include a broad portfolio of breast imaging and related products and accessories, including digital and film-based mammography systems, computer-aided detection, or CAD, for mammography and minimally invasive breast biopsy devices, breast biopsy site markers, and breast biopsy guidance systems. Our most advanced breast imaging platform, Dimensions, utilizes a technology called tomosynthesis to produce 3D images that show multiple contiguous slice images of the breast, which we refer to as the Genius 3D Mammography exam, as well as conventional 2D full field digital mammography images. Our clinical results for FDA approval demonstrated that conventional 2D digital mammography with the addition of 3D tomosynthesis is superior to 2D digital mammography alone for both screening and diagnostics.

Our GYN Surgical products include our NovaSure Endometrial Ablation System, or NovaSure, and our MyoSure Hysteroscopic Tissue Removal System, or MyoSure. The NovaSure system involves a trans-cervical procedure for the treatment of abnormal uterine bleeding. The MyoSure system is a tissue removal device that is designed to provide incision-less removal of fibroids, polyps, and other pathology within the uterus.

Our Skeletal Health segment offers Discovery and Horizon X-ray bone densitometers that assess the bone density of fracture sites; and mini C-arm imaging systems that assist in performing minimally invasive surgical procedures on a patient's extremities, such as the hand, wrist, knee, foot, and ankle.

Unless the context otherwise requires, references to we, us, Hologic or our company refer to Hologic, Inc. and its consolidated subsidiaries.

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RESULTS OF OPERATIONS

The following table sets forth, for the periods indicated, the percentage of total revenues represented by items as shown in our Consolidated Statements of Operations. All dollar amounts in tables are presented in millions.

	Fiscal Years Ended
	September 24, 2016		September 26, 2015		September 27, 2014
Revenues:
Product	84.0	%	83.9	%	82.8	%
Service and other	16.0	%	16.1	%	17.2	%
	100.0	%	100.0	%	100.0	%
Costs of revenues:
Product	26.7	%	27.9	%	28.9	%
Amortization of intangible assets	10.4	%	11.1	%	12.4	%
Impairment of intangible assets	—	%	—	%	1.0	%
Service and other	7.7	%	8.0	%	8.4	%
Gross Profit	55.2	%	53.0	%	49.2	%
Operating expenses:
Research and development	8.2	%	7.9	%	8.0	%
Selling and marketing	14.7	%	13.4	%	13.1	%
General and administrative	9.4	%	9.7	%	10.3	%
Amortization of intangible assets	3.2	%	4.1	%	4.5	%
Impairment of intangible assets	—	%	—	%	0.2	%
Restructuring and divestiture charges	0.4	%	1.1	%	2.0	%
	35.9	%	36.2	%	38.2	%
Income from operations	19.4	%	16.8	%	11.1	%
Interest income	—	%	—	%	0.1	%
Interest expense	(5.5	)%	(7.6	)%	(8.7	)%
Debt extinguishment loss	(0.2	)%	(2.3	)%	(0.3	)%
Other income (expense), net	0.9	%	(0.4	)%	(0.2	)%
Income before income taxes	14.6	%	6.6	%	1.9	%
Provision for income taxes	3.0	%	1.7	%	1.2	%
Net income	11.6	%	4.9	%	0.7	%

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Fiscal Year Ended September 24, 2016 Compared to Fiscal Year Ended September 26, 2015

Product Revenues.

	Years Ended
	September 24, 2016				September 26, 2015				Change
	Amount		% of Total Revenue		Amount		% of Total Revenue		Amount			%
Product Revenues
Diagnostics	$	1,204.7	42.5	%	$	1,184.1	43.8	%	$	20.6		1.7	%
Breast Health	719.7		25.4	%	685.1		25.3	%	34.6			5.1	%
GYN Surgical	392.0		13.9	%	334.6		12.4	%	57.4			17.2	%
Skeletal Health	62.6		2.2	%	66.6		2.5	%	(4.0		)	(6.0	)%
	$	2,379.0	84.0	%	$	2,270.4	83.9	%	$	108.6		4.8	%

We generated an increase in product revenues in fiscal 2016 compared to fiscal 2015. The growth was across our three primary business segments on both a domestic and worldwide basis, while Skeletal Health experienced a decline domestically and internationally. Product revenues increased 4.8% in the current fiscal year compared to the prior fiscal year, as reported growth was partially offset by the negative foreign currency exchange impact of the strengthening U.S. dollar against a number of currencies, most notably the Euro, Australian dollar and UK Pound.

Diagnostics product revenues increased1.7% in fiscal 2016 compared to fiscal 2015 primarily due to increases in Molecular Diagnostics of $28.6 million and Cytology & PeriNatal of $8.1 million. These increases were partially offset by a decrease of $16.2 million in our Blood Screening business.

The increase in Molecular Diagnostics products, and in particular our Aptima family of assays, was primarily due to our increased installed base of Panther instruments, which is driving higher volumes of assay testing. These increases were partially offset by a slight decline in average selling prices, a reduction in Cervista HPV revenues as our larger customers transition to our Panther system, a reduction in Cystic Fibrosis revenues as we discontinued the product at the end of the second quarter of fiscal 2016, and a slight negative foreign currency exchange impact from the strengthening U.S. dollar on our sales denominated in foreign currencies. Overall, we experienced revenue growth both domestically and internationally in our Molecular Diagnostics business. The increase in our Cytology & PeriNatal products was primarily related to increases in instrument sales and Perinatal volumes partially offset by a decrease in our ThinPrep products, where ThinPrep volumes increased slightly domestically and increased more modestly internationally, but international sales were negatively impacted by the strengthening U.S. dollar on our sales denominated in foreign currencies. As a result, this business experienced an increase in domestic revenues but a decline in international revenues. Blood Screening revenues decreased in fiscal 2016 compared to fiscal 2015 primarily due to a reduction in volumes related to the agreement between Grifols, our blood screening partner, and the Japanese Red Cross and lower instrument and ancillary volumes as well as the trend of lower blood donations in the U.S. The revenue decrease was partially offset by fluctuations in Grifols' domestic inventory levels, including increased fulfillment of the West Nile Virus assay. As a result, this business experienced an increase in domestic revenues but a decline in international revenues.

Breast Health product revenues increased5.1% in fiscal 2016 compared to fiscal 2015. Our digital mammography systems and related products revenue increased $56.8 million in fiscal 2016 compared to fiscal 2015 primarily due to higher sales volume of our 3D Dimensions systems on a worldwide basis, principally driven by domestic sales. This resulted in our domestic 3D Dimension systems sales, which have higher average selling prices than international sales, increasing as a percentage of our total 3D Dimension system sales. In addition, we also had higher software sales primarily driven by our C-View product. These increases were partially offset by negative foreign currency exchange impact of the strengthening U.S. dollar on our sales denominated in foreign currencies and decreases in the sales volume of our 2D Selenia product. In addition, we had lower sales of our interventional breast solutions products of $4.7 million and had no sales from our MRI breast coils product line in fiscal 2016, which was fully disposed during fiscal 2015 and contributed $8.4 million in fiscal 2015. Overall, we experienced growth domestically in this business segment but had a decline internationally in our primary product lines.

GYN Surgical product revenues increased17.2% in fiscal 2016 compared to fiscal 2015 primarily due to increases in MyoSure system sales of $38.8 million and NovaSure system sales of $19.1 million compared to fiscal 2015 as volumes increased both domestically and internationally for each product. We believe the increase in domestic NovaSure volumes is partially attributable to a competitor's recent withdrawal from the market. The MyoSure system continued to gain strong market acceptance as unit sales increased globally. These increases were partially offset by the negative foreign currency exchange impact of the strengthening U.S. dollar on our sales denominated in foreign currencies.

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Skeletal Health product revenues decreased6.0% in fiscal 2016 compared to fiscal 2015 primarily due to decreases in the sales volume of our older Discovery products, lower sales of our mini C-arm product and the negative foreign currency exchange impact of the strengthening U.S. dollar on our sales denominated in foreign currencies. These decreases were partially offset by an increase in our Horizon osteoporosis assessment product sales volume.

In fiscal 2016, 77.8% of product revenues were generated in the United States, 10.6% in Europe, 8.3% in Asia-Pacific, and 3.3% in other international markets. In fiscal 2015, 74.6% of product revenues were generated in the United States, 12.4% in Europe, 9.3% in Asia-Pacific, and 3.7% in other international markets. The increase in the percentage of U.S. revenues was primarily due to higher total product revenue in the U.S. in our Surgical, Breast Health and Molecular Diagnostic product lines. The impact of the U.S. revenue increases, lower overall international revenues, and the negative impact of the strengthening U.S. dollar, primarily against the Euro, Australian dollar and the UK Pound, resulted in a reduction in the European and Asia-Pacific revenues as a percentage of consolidated revenues.

Service and Other Revenues.

	Years Ended
	September 24, 2016				September 26, 2015				Change
	Amount		% of Total Revenue		Amount		% of Total Revenue		Amount		%
Service and Other Revenues	$	453.7	16.0	%	$	434.6	16.1	%	$	19.1	4.4	%

Service and other revenues are primarily comprised of revenue generated from our field service organization to provide ongoing service, installation and repair of our products. The majority of these revenues are generated within our Breast Health segment. Service and other revenues increased4.4% in fiscal 2016 compared to fiscal 2015 primarily due to higher service contract conversion and renewal rates and higher installation and training revenues related to increased sales of our 3D Dimensions systems. In addition, other revenue in our Diagnostics segment increased in fiscal 2016 primarily due to $9 million of payments received under an agreement to license certain technology.

Cost of Product Revenues.

	Years Ended
	September 24, 2016				September 26, 2015				Change
	Amount		% of Product Sales		Amount		% of Product Sales		Amount			%
Cost of Product Revenues	$	756.8	31.8	%	$	755.5	33.3	%	$	1.3		0.2	%
Amortization of Intangible Assets	293.4		12.3	%	299.7		13.2	%	(6.3		)	(2.1	)%
	$	1,050.2	44.1	%	$	1,055.2	46.5	%	$	(5.0	)	(0.5	)%

Product gross margin increased to 55.9% in fiscal 2016 compared to 53.5% in fiscal 2015.

Cost of Product Revenues. Cost of product revenues as a percentage of product revenues in the current fiscal year decreased in our Breast Health and GYN Surgical business segments and increased in Diagnostics and Skeletal Health compared to the prior fiscal year, resulting in the overall improvement in gross margins.

Diagnostics’ product costs as a percentage of revenue increased slightly in fiscal 2016 compared to fiscal 2015 primarily due to unfavorable absorption variances, a mix shift in international sales to a higher percentage of lower margin molecular diagnostic products, inventory related charges for discontinuing the Cystic Fibrosis product, and the negative impact of the strengthening U.S. dollar on our sales denominated in foreign currencies. These increases were partially offset by an increase in product revenue related to the increase in Aptima assay sales and related volumes resulting in favorable manufacturing variances, and lower production costs at our manufacturing facilities as we improve our operational efficiency and renegotiate pricing with certain of our vendors. In addition, we generated an increase in domestic sales, which have higher average selling prices, while international sales declined in the current year compared to fiscal 2015.

Breast Health’s product costs as a percentage of revenue decreased in fiscal 2016 compared to fiscal 2015 primarily due to the favorable product mix shift to our higher margin 3D Dimensions system. Our 3D Dimensions systems have higher average sales prices than our 2D systems. In addition, we had higher software sales primarily due to our C-View product, which have higher gross margins than capital equipment sales, and we experienced favorable manufacturing variances. Further, we generated an increase in domestic sales, which have higher average selling prices, while international sales declined in fiscal

40

2016 compared to fiscal 2015 resulting in an improved gross margin. We also had lower sales of our interventional breast solutions disposables and no sales from our MRI breast coils product line, which was fully disposed during fiscal 2015. Both of these product lines have lower gross margins than our digital mammography systems.

GYN Surgical’s product costs as a percentage of revenue decreased in fiscal 2016 compared to fiscal 2015 primarily due to an increase in sales volumes for both our MyoSure and NovaSure products resulting in favorable manufacturing variances, partially offset by product mix shift to our lower margin MyoSure products. In addition, the prior fiscal year included a $4.0 million charge to write-off certain inventory that would not be utilized.

Skeletal Health’s product costs as a percentage of revenue increased in fiscal 2016 compared to fiscal 2015 primarily due to an overall decrease in revenues, partially offset by favorable manufacturing variances as we built additional inventory in anticipation of outsourcing the manufacturing of a majority of the division's products to a third party.

Amortization of Intangible Assets. Amortization of intangible assets relates to acquired developed technology. These intangible assets are generally amortized over their estimated useful lives of between 8.5 and 15 years using a straight-line method or, if reliably determinable, based on the pattern in which the economic benefits of the assets are expected to be consumed. The economic pattern is based on undiscounted future cash flows. The decrease in amortization expense in fiscal 2016 compared to fiscal 2015 was primarily due to lower amortization expense from intangible assets from the Cytyc Corporation acquisition, which are being amortized based on the pattern of economic use, and the full amortization of assets acquired in our Suros acquisition. These decreases were partially offset due to the acceleration of amortization of the Cystic Fibrosis developed technology asset of $6.2 million in fiscal 2016 as a result of discontinuing this product.

Cost of Service and Other Revenues.

	Years Ended
	September 24, 2016				September 26, 2015				Change
	Amount		% of Service and Other Revenues		Amount		% of Service and Other Revenues		Amount		%
Cost of Service and Other Revenues	$	219.2	48.3	%	$	217.1	50.0	%	$	2.1	1.0	%

Service and other revenues gross margin was 51.7% in fiscal 2016 compared to 50.0% in fiscal 2015. Within our Breast Health segment, the increase in gross margin is related to higher service contract conversion and renewal rates and higher installation and training revenues related to our increased sales of 3D Dimensions systems. In addition, we had an increase in other revenue in our Diagnostics segment primarily due to $9 million of royalty payments from licensing certain technology, which had no corresponding service costs.

Operating Expenses.

	Years Ended
	September 24, 2016				September 26, 2015				Change
	Amount		% of Total Revenue		Amount		% of Total Revenue		Amount			%
Operating Expenses
Research and development	$	232.1	8.2	%	$	214.9	7.9	%	$	17.2		8.0	%
Selling and marketing	415.1		14.7	%	363.0		13.4	%	52.1			14.4	%
General and administrative	267.3		9.4	%	261.0		9.7	%	6.3			2.4	%
Amortization of intangible assets	89.7		3.2	%	110.2		4.1	%	(20.5		)	(18.6	)%
Restructuring and divestiture charges	10.5		0.4	%	28.5		1.1	%	(18.0		)	(63.2	)%
	$	1,014.7	35.9	%	$	977.6	36.2	%	$	37.1		3.8	%

Research and Development Expenses. Research and development expenses increased8.0% in fiscal 2016 compared to fiscal 2015 primarily due to higher compensation, primarily in our Breast Health segment from additional headcount. There was also an increase in new product development spend in Breast Health, GYN Surgical and Skeletal Health for prototype materials and consulting. At any point in time, we have a number of different research projects and clinical trials being conducted and the timing of these projects and related costs can vary from period to period.

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Selling and Marketing Expenses. Selling and marketing expenses increased14.4% in fiscal 2016 compared to fiscal 2015 primarily due to higher compensation from an increase in headcount in Diagnostics, GYN Surgical and Breast Health, increased commissions as a result of higher sales, an increase in spending on a number of marketing initiatives primarily in our Breast Health and Diagnostics businesses, higher medical education spend in GYN Surgical and higher travel, trade show and meeting expenses.

General and Administrative Expenses. General and administrative expenses increased2.4% in fiscal 2016 compared to fiscal 2015 primarily due to a $6.0 million charge for settling a legal fee dispute in the first quarter of fiscal 2016, and to a lesser extent, due to higher salary and compensation from increased headcount, increased consulting and legal expenses for a number of corporate initiatives including organizational structure changes and finance operational improvements, an increase in information systems infrastructure and project costs, and an increase in stock-based compensation from implementing a retirement plan provision in our equity compensation plan in the fourth quarter. Partially offsetting these increases was a decrease in the medical device excise tax of $16.9 million as a result of the Protecting Americans from Tax Hikes Act of 2015 ("PATH"), which went into effect December 15, 2015, and provides for a two-year moratorium on the 2.3% excise tax imposed on the sale of medical devices in the United States on or after January 1, 2016 through December 31, 2017, and lower tax fees.

Amortization of Intangible Assets. Amortization of intangible assets results from customer relationships, trade names, and business licenses from our acquisitions. These intangible assets are generally amortized over their estimated useful lives of between 2 and 30 years using a straight-line method or, if reliably determinable, based on the pattern in which the economic benefits of the assets are expected to be consumed utilizing expected undiscounted future cash flows. Amortization expense decreased18.6% in fiscal 2016 compared to fiscal 2015 primarily due to lower amortization expense from intangible assets from the Gen-Probe Incorporated acquisition and the Cytyc acquisition, which are being amortized based on the pattern of economic use.

Restructuring and Divestiture Charges. In fiscal 2014, we implemented cost containment measures that primarily resulted in headcount reductions and also started the process of reorganizing our senior management team and international structure, which led to additional headcount actions in fiscal 2015. In addition, in fiscal 2015, we decided to shut down our Bedford, Massachusetts facility and transfer production of our Skeletal Health products to a third-party contract manufacturer and other activities to our Marlborough, Massachusetts and Danbury, Connecticut facilities. We also implemented additional organizational changes to our international operations throughout fiscal 2016 which resulted in additional charges. Pursuant to U.S. generally accepted accounting principles, the related severance and benefit charges are recognized either ratably over the respective required employee service periods or up-front for contractual benefits, and other charges are being recognized as incurred. In fiscal 2016 and 2015, we recorded aggregate charges of $10.5 million and $28.5 million, respectively, from these actions, primarily for severance and benefits and to a lesser extent facility closure costs. Included in the fiscal 2015 charges was a $9.6 million charge to write-off the cumulative translation adjustment related to the divestiture of our MRI breast coils product line. This subsidiary was deemed to be substantially liquidated in the third quarter of fiscal 2015 as operations fully ceased. For additional information, please refer to Note 3 to our consolidated financial statements contained in Item 15 of this Annual Report.

In connection with shutting down the Bedford location, we expect to record lease obligation charges ranging from approximately $8.0 million to $12.0 million in fiscal 2017 as we meet the cease-use date requirements for a portion of the facility. In order to estimate the lease obligation charges, we have made certain assumptions including the time period it will take to obtain a subtenant and certain sub-lease rates. These estimates may vary from the sub-lease agreements ultimately executed, if at all, resulting in an adjustment to the charges.

Interest Expense.

	Years Ended
	September 24, 2016			September 26, 2015			Change
	Amount			Amount			Amount		%
Interest Expense	$	(155.3	)	$	(205.5	)	$	50.2	(24.4	)%

Interest expense consists primarily of the cash interest costs and the related amortization of the debt discount and deferred issuance costs on our Convertible Notes, 2022 Senior Notes, Senior Notes, and amounts borrowed under our Credit Agreement, Prior Credit Agreement and Accounts Receivable Securitization Program. The decrease in interest expense in fiscal 2016 compared to fiscal 2015 was primarily due to lower outstanding balances as a result of scheduled principal payments, a term loan prepayment and extinguishments in fiscal 2015 and, to a lesser extent, Convertible Note repurchases in fiscal 2016 of $274.2 million principal amount, and lower interest rates in fiscal 2016 as a result of debt refinancings in fiscal 2015.

42

Debt Extinguishment Loss.

	Years Ended
	September 24, 2016			September 26, 2015			Change
	Amount			Amount			Amount		%
Debt Extinguishment Loss	$	(5.3	)	$	(62.7	)	$	57.4	(91.5	)%

On various dates during the second and fourth quarters of fiscal 2016, we entered into privately negotiated repurchase transactions and extinguished $137.6 million and $136.6 million principal amount of our 2010 Notes and 2012 Notes, respectively, for an aggregate payment of $392.8 million, which includes a premium conversion resulting from our stock price on the date of the transactions being in excess of the conversion prices. In connection with these transactions, we recorded a debt extinguishment loss of $4.6 million and $0.7 million on the 2010 Notes and 2012 Notes, respectively, related to the difference between the fair value of their respective liability components and carrying values at the repurchase dates plus a pro-rata amount of deferred issuance costs. The remaining cash payments were allocated to the reacquisition of the equity component and recorded within additional paid-in capital, a component of stockholders' equity.

In the fourth quarter of fiscal 2015, we completed a private placement of $1.0 billion aggregate principal amount of our 2022 Senior Notes. We used the net proceeds of the 2022 Senior Notes, plus available cash to discharge the outstanding 6.25% Senior Notes due 2020 at an aggregate redemption price of $1.03 billion, reflecting a redemption premium payment of $31.25 million. As a result of this transaction, we recorded a debt extinguishment loss of $22.3 million for the write-off of the pro-rata share of the redemption premium and debt issuance costs for extinguished lenders.

Also in the fourth quarter of fiscal 2015, on various dates, we entered into privately negotiated transactions and repurchased $300 million principal amount of our 2010 Notes for a total payment of $543.7 million, which included the conversion premium resulting from our stock price on the date of transaction being in excess of the conversion price. In connection with these transactions, we recorded a debt extinguishment loss of $15.5 million related to the difference between the fair value of the liability component of the 2010 Notes and their respective carrying value at the redemption date. The remaining cash payments were allocated to the reacquisition of the equity component and recorded within additional paid-in-capital within stockholders' equity.

In the third quarter of fiscal 2015, we entered into a new Credit Agreement with Bank of America, N.A. The initial net proceeds under the new Credit Agreement were used to refinance our obligations under our Prior Credit Agreement with Goldman Sachs Bank USA. In connection with this transaction, we recorded a debt extinguishment loss of $18.2 million for the write-off of the pro-rata share of the debt discount and deferred issuance costs under the existing facility.

In the first quarter of fiscal 2015, we voluntarily pre-paid $300.0 million of our Term Loan B facility under the Prior Credit Agreement. In connection with this transaction, we recorded a debt extinguishment loss of $6.7 million to write-off the pro-rata amount of unamortized debt discount and deferred issuance costs related to this voluntary pre-payment.

Other Income (expense), net.

	Years Ended
	September 24, 2016		September 26, 2015			Change
	Amount		Amount			Amount		%
Other Income (expense), net	$	26.6	$	(11.0	)	$	37.6	**

** Percentage not meaningful

In fiscal 2016, this account was primarily comprised of a $25.1 million realized gain on the sale of a marketable security, and a gain of $3.3 million on the cash surrender value of life insurance contracts related to our deferred compensation plan. These gains were partially offset by an other-than-temporary impairment charge of $1.1 million on a marketable security and net foreign currency exchange losses of $1.0 million.

In fiscal 2015, this account was primarily comprised of an other-than-temporary impairment charge of $7.8 million on a marketable security, net foreign currency exchange losses of $2.9 million, and $1.0 million of losses on cash surrender value of life insurance contracts and mutual funds related to our deferred compensation plan.

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Provision for Income Taxes.

	Years Ended
	September 24, 2016		September 26, 2015		Change
	Amount		Amount		Amount		%
Provision for Income Taxes	$	84.5	$	45.6	$	38.9	85.3	%

Our effective tax rate for fiscal 2016 was 20.3% compared to 25.8% in fiscal 2015. For fiscal 2016, the effective tax rate was lower than the statutory tax rate primarily due to earnings in jurisdictions subject to lower tax rates, the domestic production activities deduction benefit, and a change in the valuation allowance related to the sale of a marketable security with a higher tax than book basis. For fiscal 2015, the effective tax rate was lower than the statutory rate primarily due to the domestic production activities deduction benefit.

Segment Results of Operations

We report our business as four segments: Diagnostics, Breast Health, GYN Surgical and Skeletal Health. The accounting policies of the segments are the same as those described in the footnotes to the accompanying consolidated financial statements contained in Item 15 of this Annual Report. We measure segment performance based on total revenues and operating income. Revenues from product sales of each of these segments are described in further detail above. The discussion that follows is a summary analysis of total revenues and the primary changes in operating income or loss by segment.

Diagnostics.

	Years Ended
	September 24, 2016			September 26, 2015			Change
	Amount			Amount			Amount		%
Total Revenues	$	1,236.9		$	1,211.8		$	25.1	2.1	%
Operating Income	$	126.0		$	109.5		$	16.5	15.1	%
Operating Income as a % of Segment Revenue	10.2		%	9.0		%

Diagnostics revenues increased in fiscal 2016 compared to fiscal 2015 primarily due to the increase in product revenues discussed above.

Operating income for this business segment increased in fiscal 2016 compared to fiscal 2015 primarily due to increased gross profit and lower operating expenses. Gross profit increased primarily due to increased Aptima and Cytology & Perinatal product sales, partially offset by lower blood screening revenues, as discussed above, and an increase in other revenue primarily due to $9.0 million in payments received in fiscal 2016 under an agreement to license certain technology for which there were no corresponding costs. In addition, we had favorable manufacturing variances and lower production costs at our manufacturing facilities as we improve our operational effectiveness and renegotiate pricing with certain of our vendors. Partially offsetting these improvements were unfavorable absorption variances, a mix shift in international sales to lower margin molecular diagnostic products, inventory related charges for discontinuing the Cystic Fibrosis product, the negative impact of the strengthening U.S. dollar on our sales denominated in foreign currencies, and the acceleration of amortization of the Cystic Fibrosis developed technology asset of $6.2 million. Overall, the gross margin improved slightly to 49.5% in fiscal 2016 from 49.3% in fiscal 2015.

Operating expenses decreased in fiscal 2016 compared to fiscal 2015 primarily due to lower amortization expense of $16.9 million, lower medical device excise taxes of $7.5 million, and lower restructuring charges. These decreases were partially offset by higher sales and marketing expenses related to increased compensation for additional headcount and commissions, increased marketing initiatives and trade shows and an increase in legal fees related to the settlement of a fee dispute for $6.0 million.

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Breast Health.

	Years Ended
	September 24, 2016			September 26, 2015			Change
	Amount			Amount			Amount		%
Total Revenues	$	1,112.8		$	1,063.4		$	49.4	4.6	%
Operating Income	$	350.5		$	296.3		$	54.2	18.3	%
Operating Income as a % of Segment Revenue	31.5		%	27.9		%

Breast Health revenues increased in fiscal 2016 compared to fiscal 2015 primarily due to the $34.6 million increase in product revenues discussed above and a $14.7 million increase in service revenues.

Operating income for this business segment increased in fiscal 2016 compared to fiscal 2015 primarily due to an increase in gross profit from higher revenue, partially offset by an increase in operating expenses. Gross profit increased primarily due to the increase in 3D Dimensions sales, on both a unit basis and as a percentage of total digital mammography systems, compared to our 2D systems, and an increase in software related sales, each of which have higher gross margins. We also generated an increase in domestic sales, which have higher average selling prices, while international sales declined in fiscal 2016 compared to fiscal 2015 resulting in an improved gross margin. In addition, this business experienced favorable manufacturing variances. These increases were partially offset by the negative foreign currency impact of the strengthening U.S. dollar on our sales denominated in foreign currencies. As a result, overall gross margin increased to 59.9% in fiscal 2016 compared to 56.4% in fiscal 2015.

Operating expenses increased in fiscal 2016 compared to fiscal 2015 primarily due to an increase in compensation and commissions from increased headcount and improved operating results, higher marketing expenditures for a number of marketing programs, and increased trade show and meeting expenses, higher clinical trial and prototype materials expenses, and increased information systems infrastructure costs. These expense increases were partially offset by lower medical device excise taxes of $5.8 million, lower intangible asset amortization expense of $2.5 million, and lower restructuring expenses in which the prior year included a $9.6 million charge to write-off the cumulative translation adjustment related to the divestiture of our MRI breast coils product line.

GYN Surgical.

	Years Ended
	September 24, 2016			September 26, 2015			Change
	Amount			Amount			Amount		%
Total Revenues	$	393.1		$	335.8		$	57.3	17.1	%
Operating Income	$	69.1		$	38.6		$	30.5	79.0	%
Operating Income as a % of Segment Revenue	17.6		%	11.5		%

GYN Surgical revenues increased in fiscal 2016 compared to fiscal 2015 due to the increase in product revenues discussed above.

Operating income for this business segment increased in fiscal 2016 compared to fiscal 2015 primarily due to an increase in revenues and gross profit, partially offset by an increase in operating expenses. Gross margin increased to 62.0% in fiscal 2016 from 57.3% in fiscal 2015 primarily due to increased sales volumes for both our MyoSure and NovaSure products resulting in favorable manufacturing variances, partially offset by product mix shift to our lower margin MyoSure products. In addition, intangible asset amortization expense was lower in the current year. Gross margin was also higher in the current year as the prior year included a $4.0 million charge to write-off inventory that would not be utilized.

Operating expenses increased in fiscal 2016 primarily due to an increase in compensation from additional headcount, higher commissions due to increased sales, increased spend on marketing initiatives, trade shows and medical education, increased research and development expenses and higher legal expenses.

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Skeletal Health.

	Years Ended
	September 24, 2016			September 26, 2015			Change
	Amount			Amount			Amount			%
Total Revenues	$	89.9		$	94.0		$	(4.1	)	(4.4	)%
Operating Income	$	3.0		$	10.7		$	(7.7	)	(72.0	)%
Operating Income as a % of Segment Revenue	3.3		%	11.4		%

Skeletal Health revenues decreased in fiscal 2016 compared to fiscal 2015 primarily due to the decrease in product revenues of $4.0 million discussed above.

Operating income decreased in fiscal 2016 compared to the prior year primarily due to higher operating expenses for compensation and additional investment in research and development projects, while gross profit increased slightly as a result of higher sales of our higher margin Horizon product and favorable manufacturing variances as we built up inventory in advance of transitioning production of these products to a third-party manufacturer.

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Fiscal Year Ended September 26, 2015 Compared to Fiscal Year Ended September 27, 2014

Product Revenues.

	Years Ended
	September 26, 2015				September 27, 2014				Change
	Amount		% of Total Revenue		Amount		% of Total Revenue		Amount		%
Product Revenues
Diagnostics	$	1,184.1	43.8	%	$	1,136.9	44.9	%	$	47.2	4.2	%
Breast Health	685.1		25.3	%	587.9		23.2	%	97.2		16.5	%
GYN Surgical	334.6		12.4	%	306.6		12.1	%	28.0		9.1	%
Skeletal Health	66.6		2.5	%	63.5		2.5	%	3.1		4.9	%
	$	2,270.4	83.9	%	$	2,094.9	82.7	%	$	175.5	8.4	%

We generated an increase in product revenues in fiscal 2015 compared to fiscal 2014. The growth was across all four of our business segments on both a domestic and worldwide basis. Product revenues increased 8.4% in fiscal 2015 compared to fiscal 2014, as reported growth was partially offset by the negative foreign currency exchange impact of the strengthening U.S. dollar against a number of currencies, most notably the Euro, UK Pound and Renminbi.

Diagnostics product revenues increased 4.2% in fiscal 2015 compared to fiscal 2014 primarily due to increases in Molecular Diagnostics of $32.3 million and Blood Screening of $27.1 million. These increases were partially offset by a decrease of $12.1 million in our Cytology & PeriNatal business.

The increase in Molecular Diagnostics products, and in particular our Aptima family of assays was primarily due to increased volumes due to our increased installed base of Panther instruments, and increased sales volumes of our HPV screening assay, which was FDA approved for use on our Panther system in the fourth quarter of fiscal 2013. These increases were partially offset by a reduction in Cervista HPV revenues as customers transitioned to our Panther system and Aptima HPV assay and lower instrumentation sales due to the significant purchases made by Quest Diagnostics Incorporated, or Quest, in the first quarter of fiscal 2014. In addition, we experienced slightly lower average selling prices. Our Blood Screening revenues increased in fiscal 2015 compared to fiscal 2014 primarily due to volume increases related to the agreement between Grifols, our blood screening partner, and the Japanese Red Cross, and restocking of certain assays for Grifols to normalize its inventory levels. The decrease in our Cytology & PeriNatal revenues in fiscal 2015 compared to fiscal 2014 was primarily related to the negative foreign currency exchange impact of the strengthening U.S. dollar on our sales denominated in foreign currencies, lower instrument sales and slightly lower average selling prices in China. ThinPrep Pap Test volumes domestically increased slightly in fiscal 2015 compared to fiscal 2014, and increased more modestly internationally. In the U.S., we believe the negative impact on ThinPrep Pap test volumes resulting from interval expansion for cervical cancer screening was largely negated by our increased market share gains.

Breast Health product revenues increased 16.5% in fiscal 2015 compared to fiscal 2014. Our digital mammography systems and related products revenue increased $116.1 million in fiscal 2015 compared to fiscal 2014 primarily due to the increase in 3D Dimensions units sold on a worldwide basis, which was principally driven by domestic sales. This increase was partially offset by slightly lower average selling prices and a product mix shift within the 3D offerings to systems with less features. In addition, we also had higher sales of 3D upgrades and related products primarily driven by our C-View product. As expected, we continued to experience a decline in the number of 2D systems sold as customers transition to the 3D Dimensions systems, which occurred primarily in the United States. The increase in revenue was also partially offset by the negative foreign currency exchange impact of the strengthening U.S. dollar on our sales denominated in foreign currencies, lower MRI breast coils product line revenue of $6.9 million as a result of the divestiture of this product line in the fourth quarter of fiscal 2014, and a decline of $10.2 million related to our Hitec-Imaging business primarily as a result of the completed shutdown of its organic photoconductor production line in fiscal 2014.

GYN Surgical product revenues increased 9.1% in fiscal 2015 compared to fiscal 2014 primarily due to an increase in MyoSure system sales of $29.1 million partially offset by lower NovaSure device sales of $1.3 million. The MyoSure system continued to gain strong market acceptance as unit sales increased globally, partially offset by product mix and slightly lower average sales prices. NovaSure revenues were slightly lower in fiscal 2015 compared to fiscal 2014 primarily due to the negative foreign currency exchange impact of the strengthening U.S. dollar on our sales denominated in foreign currencies and slightly lower domestic volume, partially offset by higher international volume.

Skeletal Health product revenues increased 4.9% in fiscal 2015 compared to fiscal 2014 primarily due to volume increases in our Horizon osteoporosis assessment product sales on worldwide basis, which were partially offset by lower

47

volumes of our older Discovery products, the negative foreign currency exchange impact of the strengthening U.S. dollar on our sales denominated in foreign currencies, and lower average selling prices.

In fiscal 2015, 74.6% of product sales were generated in the United States, 12.4% in Europe, 9.3% in Asia-Pacific, and 3.7% in other international markets. In fiscal 2014, 73.6% of product sales were generated in the United States, 13.8% in Europe, 8.6% in Asia-Pacific, and 4.0% in other international markets. The increase in the percentage of U.S. revenues was primarily due to increased sales of our 3D Dimensions system and related products and the negative impact of the strengthening U.S. dollar against the Euro and UK Pound, which resulted in lower European revenues.

Service and Other Revenues.

	Years Ended
	September 26, 2015				September 27, 2014				Change
	Amount		% of Total Revenue		Amount		% of Total Revenue		Amount			%
Service and Other Revenues	$	434.6	16.1	%	$	435.8	17.2	%	$	(1.2	)	(0.3	)%

Service and other revenues decreased 0.3% in fiscal 2015 compared to fiscal 2014 as fiscal 2014 service and other revenues included $20.1 million of non-recurring revenue within our Diagnostics segment related to executing a license amendment with Roka Bioscience, Inc. in the fourth quarter of fiscal 2014. Excluding this impact, service and other revenues increased by $18.9 million or 4.5% in fiscal 2015 due to a favorable shift in service contract pricing and higher installation and training revenues related to increased sales of our 3D Dimensions systems. The increase was also driven to a lesser extent by an increase in the number of service contracts in our Breast Health business as our installed base of our digital mammography systems continued to grow.

Cost of Product Revenues.

	Years Ended
	September 26, 2015				September 27, 2014				Change
	Amount		% of Product Revenue		Amount		% of Product Revenue		Amount			%
Cost of Product Revenues	$	755.5	33.3	%	$	731.3	34.9	%	$	24.2		3.3	%
Amortization of Intangible Assets	299.7		13.2	%	314.6		15.0	%	(14.9		)	(4.7	)%
Impairment of Intangible Assets	—		—	%	26.6		1.3	%	(26.6		)	(100.0	)%
	$	1,055.2	46.5	%	$	1,072.5	51.2	%	$	(17.3	)	(1.6	)%

Product gross margin increased to 53.5% in fiscal 2015 compared to 48.8% in fiscal 2014.

Cost of Product Revenues. Cost of product revenues as a percentage of product revenues in fiscal 2015 decreased in Diagnostics and Breast Health, and increased in GYN Surgical and Skeletal Health compared to fiscal 2014, resulting in an overall improved gross margin.

Diagnostics’ product costs as a percentage of revenue decreased in fiscal 2015 compared to fiscal 2014 primarily due to an increase in product revenue related to the increase in Aptima assay sales and related volumes resulting in favorable manufacturing variances, higher blood screening revenues, lower production costs at our manufacturing facilities, lower royalty expenses primarily for ThinPrep due to the expiration of a royalty obligation during fiscal 2014, lower Cervista HPV sales, and lower molecular diagnostics instrumentation sales, which have very low gross margins. Partially offsetting these improvements was the negative foreign currency exchange impact of the strengthening U.S. dollar on our sales denominated in foreign currencies.

Breast Health’s product costs as a percentage of revenue decreased in fiscal 2015 compared to fiscal 2014 primarily due to the favorable product mix shift to our higher margin 3D Dimensions system. Our 3D Dimensions systems have higher average sales prices than our 2D systems and sales in the U.S. have higher average sales prices than those sold internationally, resulting in higher gross margins. In addition, we had higher software sales for 3D upgrades and our C-View product, which have higher gross margins than capital equipment sales, while we had lower revenues from our Hitec-Imaging business, which has lower gross margins than the majority of our Breast Health products. Partially offsetting these improvements was the negative foreign currency exchange impact of the strengthening U.S. dollar on our sales denominated in foreign currencies.

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GYN Surgical’s product costs as a percentage of revenue increased in fiscal 2015 compared to fiscal 2014 primarily due to an increase in sales volumes for our MyoSure system and product mix shift. The MyoSure system has slightly lower gross margins than our NovaSure system. In addition, in fiscal 2015 we recorded a $4.0 million charge to write-off certain inventory that would not be utilized.

Skeletal Health’s product costs as a percentage of revenue increased in fiscal 2015 compared to fiscal 2014 primarily due to decreases in the average selling prices for both our Horizon and legacy Discovery products principally due to the negative foreign currency exchange impact of the strengthening U.S. dollar on our sales denominated in foreign currencies.

Amortization of Intangible Assets. The decrease in amortization expense in fiscal 2015 compared to fiscal 2014 was primarily due to lower amortization expense from intangible assets from the Cytyc Corporation acquisition, which are amortized based on the pattern of economic use, and the write-down in the second quarter of fiscal 2014 and the eventual write-off of the MRI breast coils developed technology asset as a result of the divestiture of this product line in the fourth quarter of fiscal 2014. Amortization expense in fiscal 2014 from the MRI breast coil product line was $9.1 million. Partially offsetting these decreases was an increase due to certain in-process R&D projects from our Gen-Probe acquisition being completed in 2014 and reclassified to developed technology. The value assigned to these projects is now being amortized.

Impairment of Intangible Assets. There was no impairment of intangible assets in fiscal 2015. In the second quarter of fiscal 2014, we evaluated our MRI breast coils product line asset group, which was within our Breast Health segment, for impairment due to our expectation that it would be sold or disposed of significantly before the end of its previously estimated useful life. The undiscounted cash flows expected to be generated by this asset group over its estimated remaining life were not sufficient to recover its carrying value. At that time, we estimated the fair value of the asset group resulting in an aggregate impairment charge of $28.6 million, comprised of $27.1 million of intangible assets and $1.5 million of property and equipment. The impairment charge was allocated to the long-lived assets, resulting in $26.6 million being allocated to developed technology. The MRI breast coils product line was sold in the fourth quarter of fiscal 2014.

Cost of Service and Other Revenues.

	Years Ended
	September 26, 2015				September 27, 2014				Change
	Amount		% of Service and Other Revenues		Amount		% of Service and Other Revenues		Amount		%
Cost of Service and Other Revenues	$	217.1	50.0	%	$	212.7	48.8	%	$	4.4	2.1	%

Service and other revenues gross margin was 50.0% in fiscal 2015 compared to 51.2% in fiscal 2014. Gross margin in fiscal 2015 was lower than fiscal 2014 as fiscal 2014 service and other revenues included $20.1 million of revenue from the Roka Bioscience, Inc. license amendment transaction, which did not have any corresponding costs. Excluding this transaction, gross margin would have improved by 1.2% in fiscal 2015. Within our Breast Health segment, gross margin improved primarily due to a favorable shift in service contract pricing and higher installation and training revenues related to our increased sales of 3D Dimensions systems. The increase was also driven to a lesser extent by the continued conversion of a high percentage of our domestic installed base of digital mammography systems to service contracts upon expiration of the warranty period improving leverage of our service infrastructure.

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Operating Expenses.

	Years Ended
	September 26, 2015				September 27, 2014				Change
	Amount		% of Total Revenue		Amount		% of Total Revenue		Amount			%
Operating Expenses
Research and development	$	214.9	7.9	%	$	203.2	8.0	%	$	11.7		5.8	%
Selling and marketing	363.0		13.4	%	331.7		13.1	%	31.3			9.4	%
General and administrative	261.0		9.7	%	259.8		10.3	%	1.2			0.5	%
Amortization of intangible assets	110.2		4.1	%	113.8		4.5	%	(3.6		)	(3.2	)%
Impairment of intangible assets	—		—	%	5.6		0.2	%	(5.6		)	(100.0	)%
Restructuring and divestiture charges	28.5		1.1	%	51.7		2.0	%	(23.2		)	(44.9	)%
	$	977.6	36.2	%	$	965.8	38.1	%	$	11.8		1.2	%

Research and Development Expenses. Research and development expenses increased 5.8% in fiscal 2015 compared to fiscal 2014 primarily due to increased compensation from higher headcount and variable compensation due to improved operating results, primarily in our Diagnostics and GYN Surgical segments, and additional program spend for our virology product line within our molecular diagnostics business, including increased clinical spending and higher spend for prototype materials. Partially offsetting these increases was lower spend of $3.5 million from our MRI breast coils product line as a result of the divestiture of this business in the fourth quarter of fiscal 2014. At any point in time, we have a number of different research projects and clinical trials being conducted and the timing of these projects and related costs can vary from period to period.

Selling and Marketing Expenses. Selling and marketing expenses increased 9.4% in fiscal 2015 compared to fiscal 2014 primarily due to increased commissions as a result of higher sales, an increase in spending on marketing initiatives primarily for our breast cancer awareness, Genius 3D mammography and cervical cancer awareness campaigns and higher training costs. These increases were partially offset by lower spend of $4.4 million from our MRI breast coils product line as a result of the divestiture of this business in the fourth quarter of fiscal 2014, lower international headcount from restructuring actions, and lower travel expenses.

General and Administrative Expenses. General and administrative expenses increased 0.5% in fiscal 2015 compared to fiscal 2014 primarily due to higher variable compensation due to improved operating results and higher stock-based compensation, increased consulting expenses for a number of corporate initiatives and higher medical device excise taxes from increased U.S. product sales. These increases were partially offset by decreases in credit card fees related to customer sales, lower spend related to our MRI breast coils product line as a result of its divestiture in the fourth quarter of fiscal 2014, decreases in certain non-income tax expenses, a reduction of bad debt expense, reduced legal and consulting fees related to shareholder activism, and lower headcount primarily internationally from restructuring actions.

Amortization of Intangible Assets. The decrease in amortization expense in fiscal 2015 compared to fiscal 2014 was primarily due lower amortization from intangibles acquired in the Cytyc Corporation acquisition in fiscal 2008 as the pattern of economic benefits decreased, partially offset by the shortening of the remaining life of certain corporate trade names as we decided to phase out their use during the second quarter of fiscal 2014.

Impairment of Intangible Assets. There was no impairment of intangible assets in fiscal 2015. In the fourth quarter of fiscal 2014, we recorded a $5.1 million impairment charge for our existing in-process research and development projects from our Gen-Probe acquisition primarily due to a reduction in estimated future revenues from these products. Additionally, in the second quarter of fiscal 2014, we recorded an impairment charge for a trade name intangible asset related to our MRI breast coils product line as previously discussed.

Restructuring and Divestiture Charges. In the fourth quarter of fiscal 2012, in connection with our acquisition of Gen-Probe, we implemented a restructuring action to consolidate our Diagnostics operations by decreasing headcount and transferring our legacy molecular diagnostics operations in Madison, Wisconsin. We also finalized our decision to transfer production of our interventional breast solutions products from our Indianapolis facility to our Costa Rica facility. In fiscal 2013 and in the first quarter of fiscal 2014, we implemented cost containment measures that primarily resulted in headcount reductions. In the second, third and fourth quarters of fiscal 2014, we terminated certain personnel at our Hitec Imaging

50

operation in Germany, and as part of ongoing management changes and structural refinement, we terminated certain executives and employees on a worldwide basis. Certain of these actions and related charges continued into fiscal 2015 and additional actions were taken in fiscal 2015 for executive management changes and to further consolidate operations. Pursuant to U.S. generally accepted accounting principles, the related severance and benefit charges are being recognized either ratably over the respective required employee service periods or when benefits become probable for contractual and statutory benefits, and other charges are being recognized as incurred. In fiscal 2015 and 2014, we recorded aggregate charges of $28.5 million and $51.7 million, respectively, from these actions, primarily for severance and benefits and to a lesser extent facility closure costs. Included in the fiscal 2015 charges was a $9.6 million charge to write-off the cumulative translation adjustment related to the divestiture of our MRI breast coils product line. This subsidiary was deemed to be substantially liquidated in the third quarter of fiscal 2015 as operations fully ceased. The charges recorded in fiscal 2014 primarily related to severance and benefits and included a $3.1 million impairment charge to record certain buildings at our Warstein, Germany location to their estimated fair value. In addition, the fiscal 2014 charges included a loss on divestiture of $5.3 million related to the sale of our MRI breast coils product line in the fourth quarter of fiscal 2014.

Interest Expense.

	Years Ended
	September 26, 2015			September 27, 2014			Change
	Amount			Amount			Amount		%
Interest Expense	$	(205.5	)	$	(220.6	)	$	15.1	(6.8	)%

The decrease in interest expense in fiscal 2015 compared to fiscal 2014 was primarily due to lower outstanding balances as a result of principal payments, prepayments and extinguishments and lower interest rates as a result of debt restructurings, partially offset by the increase in interest expense for transaction fees that were expensed related to executing the new Credit Agreement and our 2022 Senior Notes.

Debt Extinguishment Loss.

	Years Ended
	September 26, 2015			September 27, 2014			Change
	Amount			Amount			Amount			%
Debt Extinguishment Loss	$	(62.7	)	$	(7.4	)	$	(55.3	)	747.3	%

In the fourth quarter of fiscal 2015, we completed a private placement of $1.0 billion aggregate principal amount of our 5.250% Senior Notes due 2022 (the "2022 Senior Notes"). We used the net proceeds of the 2022 Senior Notes, plus available cash to discharge the outstanding 6.25% Senior Notes due 2020 at an aggregate redemption price of $1.03 billion, reflecting a redemption premium payment of $31.25 million. As a result of this transaction, we recorded a debt extinguishment loss of $22.3 million for the write-off of the pro-rata share of the redemption premium and debt issuance costs for extinguished lenders.

Also in the fourth quarter of fiscal 2015, on various dates, we entered into privately negotiated transactions and repurchased $300 million principal amount of our 2010 Notes for a total payment of $543.7 million, which includes the conversion premium resulting from our stock price on the date of transaction being in excess of the conversion price of $23.03. In connection with these transactions, we recorded a debt extinguishment loss of $15.5 million related to the difference between the fair value of the liability component of the 2010 Notes and their respective carrying value at the redemption date. The remaining cash payments were allocated to the reacquisition of the equity component and recorded within additional paid-in-capital within stockholders' equity.

In the third quarter of fiscal 2015, we entered into a new Credit Agreement with Bank of America, N.A. The initial net proceeds under the new Credit Agreement were used to refinance our obligations under our Prior Credit Agreement with Goldman Sachs Bank USA. In connection with this transaction, we recorded a debt extinguishment loss of $18.2 million for the write-off of the pro-rata share of the debt discount and deferred issuance costs under the existing facility.

In the second quarter of fiscal 2014, we refinanced the Term Loan B facility of our Prior Credit Agreement and voluntarily prepaid $25.0 million of principal. In connection with this transaction, we recorded a debt extinguishment loss of $4.5 million for the write-off of the pro-rata share of the debt discount and deferred issuance costs. In the first quarter of fiscal 2014, we made a $100.0 million voluntary pre-payment on the Term Loan B facility of our Prior Credit Agreement. As a result, the pro-rata share of the debt discount and deferred issuance costs aggregating $2.9 million related to this prepayment was recorded as a debt extinguishment loss.

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Other Income (Expense), net.

	Years Ended
	September 26, 2015			September 27, 2014			Change
	Amount			Amount			Amount			%
Other Expense, net	$	(11.0	)	$	(4.9	)	$	(6.1	)	124.5	%

In fiscal 2015, this account was primarily comprised of an other-than-temporary impairment charge of $7.8 million on a marketable security, net foreign currency exchange losses of $2.9 million, and $1.0 million of losses on cash surrender value of life insurance contracts and mutual funds related to our deferred compensation plan.

In fiscal 2014, this account was primarily comprised of other-than-temporary impairment charges on cost-method equity investments of $6.9 million and net foreign currency exchange losses of $1.8 million, partially offset by gains of $3.8 million on the cash surrender value of life insurance contracts and mutual funds related to our deferred compensation plan. 

Provision for Income Taxes.

	Years Ended
	September 26, 2015		September 27, 2014		Change
	Amount		Amount		Amount		%
Provision for Income Taxes	$	45.6	$	30.8	$	14.8	48.1	%

Our effective tax rate for fiscal 2015 was 25.8% compared to 63.9% in fiscal 2014. For fiscal 2015, the effective tax rate was lower than the statutory rate primarily due to the domestic production activities deduction benefit. For fiscal 2014, the effective tax rate was higher than the statutory rate primarily due to unbenefited foreign losses partially offset by the domestic production activities deduction benefit.

Segment Results of Operations

Diagnostics.

	Years Ended
	September 26, 2015			September 27, 2014			Change
	Amount			Amount			Amount		%
Total Revenues	$	1,211.8		$	1,186.8		$	25.0	2.1	%
Operating Income	$	109.5		$	48.7		$	60.8	124.8	%
Operating Income as a % of Segment Revenue	9.0		%	4.1		%

Diagnostics revenues increased in fiscal 2015 compared to fiscal 2014 primarily due to the increase in product revenues discussed above.

Operating income for this business segment increased in fiscal 2015 compared to fiscal 2014, primarily due to increased gross profit in absolute dollars and lower operating expenses. Gross profit increased primarily due to increased Aptima sales, higher blood screening revenues as a result of a full year of revenue from the agreement between Grifols and the Japanese Red Cross, favorable manufacturing variances and lower royalty expense, partially offset by a decrease in Cervista HPV volume, lower instrumentation sales and the negative foreign currency exchange impact of the strengthening U.S. dollar on our sales denominated in foreign currencies. In addition, also offsetting gross profit and margin in fiscal 2015, fiscal 2014 included $20.1 million of non-recurring revenue related to executing a license amendment with Roka Bioscience, Inc. with no corresponding costs. Overall, the gross margin improved to 49.3% in fiscal 2015 from 46.8% in fiscal 2014.

Operating expenses decreased in fiscal 2015 compared to fiscal 2014 primarily due to a reduction in headcount in general and administrative functions and sales and marketing, lower restructuring charges, and a decrease in the amortization of intangible assets. There were also lower bad debt expense and a decrease in non-income tax expense. These decreases were partially offset by an increase in spending on research and development for additional headcount and project spending, primarily for our virology product line, higher spend for various marketing initiatives and increased variable compensation from improved operating results.

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Breast Health.

	Years Ended
	September 26, 2015			September 27, 2014			Change
	Amount			Amount			Amount		%
Total Revenues	$	1,063.4		$	944.7		$	118.7	12.6	%
Operating Income	$	296.3		$	187.6		$	108.7	57.9	%
Operating Income as a % of Segment Revenue	27.9		%	19.9		%

Breast Health revenues increased in fiscal 2015 compared to fiscal 2014 primarily due to the $97.1 million increase in product revenues discussed above and a $21.6 million increase in service revenues.

Operating income for this business segment increased in fiscal 2015 compared to fiscal 2014 primarily due to an increase in gross profit from higher revenue, partially offset by an increase in operating expenses. Gross profit in absolute dollars increased primarily due to the increase in 3D Dimensions sales, on both a unit basis and as a percentage of total digital mammography systems, compared to our 2D systems, an increase in software related sales, which have higher gross margins, and lower amortization expense primarily due to the divestiture of our MRI breast coils product in fiscal 2014, partially offset by the negative foreign currency exchange impact of the strengthening U.S. dollar on our sales denominated in foreign currencies. In addition, fiscal 2014 included a $26.6 million impairment charge for developed technology assets related to our MRI breast coils product line discussed above. Service revenues also improved in fiscal 2015 compared to fiscal 2014 primarily due to an increase in service contracts from our higher installed base. As a result, overall gross margin increased to 56.4% in fiscal 2015 compared to 50.1% in fiscal 2014.

Operating expenses increased in fiscal 2015 compared to fiscal 2014 primarily due to an increase in commissions from higher revenues, higher marketing expenditures primarily for our breast cancer awareness and Genius 3D campaigns, the $9.6 million charge to write-off the cumulative translation adjustment related to the divestiture of our MRI breast coils product line discussed above, and increased variable compensation from improved operating results. These expense increases were partially offset by lower intangible asset amortization expense, lower restructuring expenses, and lower MRI breast coils product line expenses (excluding restructuring) of $11.9 million as a result of its divestiture.

GYN Surgical.

	Years Ended
	September 26, 2015			September 27, 2014			Change
	Amount			Amount			Amount		%
Total Revenues	$	335.8		$	307.9		$	27.9	9.1	%
Operating Income	$	38.6		$	30.3		$	8.3	27.4	%
Operating Income as a % of Segment Revenue	11.5		%	9.9		%

GYN Surgical revenues increased in fiscal 2015 compared to fiscal 2014 due to the increase in product revenues discussed above.

Operating income for this business segment increased in fiscal 2015 compared to fiscal 2014 primarily due to an increase in gross profit in absolute dollars, partially offset by an increase in operating expenses. Gross margin increased to 57.3% in fiscal 2015 from 56.9% in fiscal 2014 primarily due to the benefit of higher sales volume partially offset by a $4.0 million charge to write-off inventory that will not be utilized, a product mix shift to higher sales volume of MyoSure systems and the negative foreign currency exchange impact of the strengthening U.S. dollar on our sales denominated in foreign currencies.

Operating expenses increased in fiscal 2015 primarily due to an increase in sales force headcount, higher commissions, increased costs associated with international sales initiatives, and increased research and development expenses as we develop next generation devices. These increases were partially offset by lower litigation fees.

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Skeletal Health.

	Years Ended
	September 26, 2015			September 27, 2014			Change
	Amount			Amount			Amount			%
Total Revenues	$	94.0		$	91.3		$	2.7		3.0	%
Operating Income	$	10.7		$	13.1		$	(2.4	)	(18.3	)%
Operating Income as a % of Segment Revenue	11.4		%	14.3		%

Skeletal Health revenues increased in fiscal 2015 compared to fiscal 2014 primarily due to the increase in product revenues of $3.1 million discussed above which was partially offset by a slight decrease in service and other revenue.

Operating income decreased in fiscal 2015 compared to fiscal 2014 primarily due to higher operating expenses. Operating expenses increased in fiscal 2015 primarily due to higher compensation from improved operating results and additional investment in research and development projects.

LIQUIDITY AND CAPITAL RESOURCES

At September 24, 2016, we had $424.7 million of working capital, and our cash and cash equivalents totaled $548.4 million. Our cash and cash equivalents balance increased by $57.1 million during fiscal 2016 principally due to cash generated through operating activities, partially offset by payments to extinguish certain of our Convertible Notes, repurchase common stock and make capital expenditures.

In fiscal 2016, our operating activities provided us with $787.2 million of cash, which included net income of $330.8 million, non-cash charges for depreciation and amortization aggregating $465.4 million, stock-based compensation expense of $65.4 million and non-cash interest expense of $52.1 million related to our outstanding debt. These adjustments to net income were partially offset by a decrease in net deferred tax liabilities of $155.8 million, primarily from the amortization of intangible assets, and a gain on the sale of a marketable security of $25.1 million. Cash provided by operations included a net cash inflow of $56.4 million from changes in our operating assets and liabilities. Changes in our operating assets and liabilities were driven primarily by an increase in accrued expenses of $45.6 million related to the timing of accruals for income and other taxes and an increase in accrued compensation, an increase in accounts payable of $40.1 million due to the timing of payments as we have extended the payment terms with our vendors to be more in-line with industry norms, and a decrease in inventory of $7.6 million primarily due to an increase in sales. These cash inflows were partially offset by an increase in accounts receivable of $31.8 million due to the increase in revenue and timing of cash receipts.

In fiscal 2016, we used $68.4 million of cash from investing activities, primarily related to $94.5 million for capital expenditures, which consisted of the placement of equipment under customer usage agreements and purchases of manufacturing equipment and computer hardware, partially offset by cash received from the sale of a marketable security for $31.1 million.

In fiscal 2016, our financing activities used cash of $659.7 million, primarily for payments to extinguish certain of our Convertible Notes of $392.8 million, repurchases of common stock of $250.0 million, net payments of $175.0 million under our revolving line of credit, payments related to our long term debt under our Credit Agreement of $75.0 million and payments of $16.4 million for employee-related taxes withheld for the net share settlement of vested restricted stock units. Partially offsetting these uses of cash were proceeds of $200.0 million borrowed under our accounts receivable securitization program and proceeds of $38.5 million from our equity compensation plans.

Debt

We had total recorded debt outstanding of $3.3 billion at September 24, 2016, which is comprised of amounts outstanding under our Credit Agreement of $1.39 billion (principal $1.41 billion), our 2022 Senior Notes of $1.0 billion and our convertible notes of $775.7 million (principal $745.7 million), which includes accretion of interest at 4.0% per annum on the 2013 Notes, and amounts outstanding under the accounts receivable securitization program of $200.0 million.

Credit Agreement

The credit facilities under the Credit Agreement consist of:

• A $1.5 billion secured term loan to Hologic with a final maturity date of May 29, 2020 or the Term Loan, of which $1.4 billion was outstanding at September 24, 2016; and

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• A secured revolving credit facility under which the Borrowers (as defined below) may borrow up to $1 billion, subject to certain sublimits, with a final maturity date of May 29, 2020 or the Revolver, of which none was outstanding at September 24, 2016.

Borrowings are secured by first-priority liens on, and a first-priority security interest in, substantially all of the assets of our U.S. subsidiaries, with certain exceptions. For example, borrowings under the Credit Agreement are not secured by those accounts receivable that we transfer to the special purpose entity under our Accounts Receivable Securitization Program. As of September 24, 2016, the interest rate under the Term Loan and Revolver was 2.05% on the outstanding amounts, which is reflective of the Eurocurrency Rate (i.e., Libor) plus the applicable margin of 1.50% per annum as set forth in the Credit Agreement. The applicable margin is subject to specified changes depending on the total net leverage ratio as defined in the Credit Agreement.

We are required to make scheduled principal payments under the Term Loan in increasing amounts ranging from $18.75 million per three-month period commencing with the three-month period ending on September 25, 2015 to $37.5 million per three-month period commencing with the three-month period ending on September 28, 2018. The remaining balance of the Term Loan is due at maturity. Any amounts outstanding under the Revolver are due at maturity. In addition, subject to the terms and conditions set forth in the Credit Agreement, we are required to make certain mandatory prepayments from specified excess cash flows from operations (to the extent our net senior secured leverage ratio exceeds a certain ratio) and from the net proceeds of specified types of asset sales (subject to certain reinvestment rights), debt issuances and insurance recoveries (subject to certain reinvestment rights) (“Mandatory Prepayments”). Mandatory Prepayments are required to be applied by us, first, to the Term Loan, second, to any outstanding amount under the swing line sublimit, third, to the Revolver, and fourth to any outstanding amount under a letter of credit sublimit. Subject to certain limitations, we may voluntarily prepay any of the credit facilities under the Credit Agreement without premium or penalty.

The Credit Agreement contains affirmative and negative covenants customarily applicable to senior secured credit facilities, including covenants restricting our ability and that of the Subsidiary Guarantors, subject to negotiated exceptions, to incur additional indebtedness and additional liens on our assets, engage in mergers or acquisitions or dispose of assets, enter into sale-leaseback transactions, pay dividends or make other distributions, voluntarily prepay other indebtedness, enter into transactions with affiliated persons, make investments, and change the nature of our businesses. The Credit Agreement also contains customary representations and warranties and events of default, including payment defaults, breach of representations and warranties, covenant defaults, cross defaults and an event of default upon a change of control of the company.

The Credit Agreement contains total net leverage ratio and interest coverage ratio financial covenants measured as of the last day of each fiscal quarter and an excess cash flow prepayment requirement measured as of the end of each fiscal year. As of September 24, 2016, we were in compliance with these covenants, and no Mandatory Prepayments were required as of September 24, 2016.

Senior Notes

On July 2, 2015, we completed a private placement of $1.0 billion aggregate principal amount of our 2022 Senior Notes. The 2022 Senior Notes are our general senior unsecured obligations and are guaranteed on a senior unsecured basis by certain of our domestic subsidiaries (the "Guarantors"). The 2022 Senior Notes mature on July 15, 2022 and bear interest at the rate of 5.250% per year, payable semi-annually on January 15 and July 15 of each year, commencing on January 15, 2016.

We may redeem the 2022 Senior Notes at any time prior to July 15, 2018 at a price equal to 100% of the aggregate principal amount so redeemed, plus accrued and unpaid interest, if any, to the redemption date and a make-whole premium set forth in the indenture. We may also redeem up to 35% of the aggregate principal amount of our 2022 Senior Notes with the net cash proceeds of certain equity offerings at any time and from time to time before July 15, 2018, at a redemption price equal to 105.250% of the aggregate principal amount so redeemed, plus accrued and unpaid interest, if any, to the redemption date. We also have the option to redeem the 2022 Senior Notes on or after: July 15, 2018 through July 14, 2019 at 102.625% of par; July 15, 2019 through July 14, 2020 at 101.313% of par; and July 15, 2020 and thereafter at 100% of par. In addition, if we undergo a change of control, as provided in the indenture, we will be required to make an offer to purchase each holder’s 2022 Senior Notes at a price equal to 101% of their principal amount, plus accrued and unpaid interest, if any, to the repurchase date.

Convertible Notes

At September 24, 2016, our convertible notes, in the aggregate principal amount of $745.7 million, are recorded at $775.7 million, which includes accretion of interest at 4.0% per annum on the 2013 Notes and is net of the unamortized debt discount attributed to the embedded conversion feature of the convertible notes and deferred issuance costs. At September 24, 2016, these notes consisted of:

• $12.3 million of our 2.00% Convertible Exchange Senior Notes due 2037 issued in November 2010 (2010 Notes);

• $363.4 million of our 2.00% Convertible Senior Notes due 2042 issued in March 2012 (2012 Notes); and

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• $370.0 million of our 2.00% Convertible Senior Notes due 2043 issued in February 2013 (2013 Notes).

The 2010 Notes, 2012 Notes and 2013 Notes are collectively referred to herein as the convertible notes. Interest on the 2013 Notes is currently being accreted to principal, from their date of issuance, at a rate of 4.00% per year until December 15, 2017, and 2.00% per year thereafter. All other notes bear interest at a rate of 2.00% per year on the original principal amount, payable semi-annually in arrears until their first put date and thereafter accrete principal at the rate of 2.00% per year. In addition, under certain circumstances contingent interest may be payable under the convertible notes after each of their first put date.

The 2010 Notes, 2012 Notes and 2013 Notes have conversion prices of approximately $23.03, $31.175 and $38.59, respectively, and are subject in each case to adjustment. Holders of the 2010 Notes, 2012 Notes and 2013 Notes may convert their convertible notes at the applicable conversion price under certain circumstances, including without limitation (x) if the last reported sale price of our common stock exceeds 130% of the applicable conversion price for at least 20 trading days in the 30 consecutive trading days ending on the last trading day of the preceding calendar quarter and (y) if the applicable series of convertible notes has been called for redemption. It is our current intent and policy to settle any conversion of the convertible notes as if we had elected to make either a net share settlement or all cash election, such that upon conversion, we intend to pay the holders in cash for the principal amount of the convertible notes and, if applicable shares of our common stock or cash to satisfy the premium based on a calculated daily conversion value. On November 9, 2016, we announced that as provided in the indenture for the 2010 Notes, we had made an irrevocable election to settle any conversion of the 2010 Notes validly submitted on or after November 9, 2016 in cash.

During the fourth quarter of fiscal 2016, the closing price of our common stock exceeded 130% of the applicable conversion price of our 2010 Notes on at least 20 of the last 30 consecutive trading days of the quarter. Therefore holders of the 2010 Notes are able to convert their notes during the first quarter of fiscal 2017. As such, we classified the $12.2 million carrying value of our 2010 Notes (which had a principal value of $12.3 million at September 24, 2016) as a current debt obligation. As of September 24, 2016, the if-converted value of the 2010 Notes exceeded the aggregate principal amount by approximately $7.9 million.

Holders may require us to repurchase the 2010 Notes on each of December 15, 2016, 2020, 2025, on December 13, 2030 and on December 14, 2035, or upon a fundamental change as provided in the indenture for the 2010 Notes, at a repurchase price equal to 100% of their accreted principal amount, plus accrued and unpaid interest. On November 9, 2016, we announced that we would repurchase, on December 15, 2016, all of the outstanding 2010 Notes at a repurchase price payable in cash equal to 100% of the original principal amount of the 2010 Notes validly surrendered for repurchase and not withdrawn plus accrued and unpaid interest, if any, to, but not including, December 15, 2016, at the option of the holders of the 2010 Notes.

Holders may require us to repurchase the 2012 Notes on each of March 1, 2018, 2022, 2027 and 2032, and on March 2, 2037, or upon a fundamental change as provided in the indenture for the 2012 Notes, at a repurchase price equal to 100% of their accreted principal amount, plus accrued and unpaid interest.

Holders may require us to repurchase the 2013 Notes on each of December 15, 2017, 2022, 2027, 2032 and 2037, or upon a fundamental change as provided in the indenture for the 2013 Notes, at a repurchase price equal to 100% of their accreted principal amount, plus accrued and unpaid interest.

We may redeem any of the 2010 Notes, 2012 Notes and 2013 Notes beginning December 19, 2016, March 6, 2018, and December 15, 2017, respectively. As discussed above, holders of the convertible notes may elect to convert their notes prior to redemption. We may redeem all or a portion of the 2010 Notes, 2012 Notes and 2013 Notes (i.e., in cash or a combination of cash and shares of our common stock) at a redemption price equal to 100% of their principal amount, plus accrued and unpaid interest to, but excluding, the applicable redemption date. On November 9, 2016, we announced that we had elected to redeem, on December 19, 2016, all of the outstanding 2010 Notes (those 2010 Notes not put to us on December 15, 2016 or validly submitted for conversion prior to December 16, 2016) at a redemption price payable in cash equal to 100% of the accreted principal amount of the 2010 Notes to be redeemed plus accrued and unpaid interest (including contingent interest, if any) to, but not including, December 19, 2016. We also announced on November 9, 2016 that as provided in the indenture for the 2010 Notes, we had made an irrevocable election to settle any conversion of the 2010 Notes validly submitted on or after November 9, 2016 in cash.

We have recorded deferred tax liabilities related to our convertible notes original issuance discount, representing the spread between the stated cash coupon rate and the higher interest rate that is deductible for tax purposes based on the type of security. When our convertible notes are extinguished, we are required to recapture the original issuance discount previously deducted for tax purposes. The tax recapture, however, decreases as the fair market value of the convertible notes and the amount paid on settlement increases.

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Accounts Receivable Securitization Program

On April 25, 2016, we entered into a one-year $200.0 million accounts receivable securitization program (the "Securitization Program") with several of our wholly owned subsidiaries and certain financial institutions. Under the terms of the Securitization Program, we and certain of our wholly-owned subsidiaries sell our customer receivables to a bankruptcy remote special purpose entity, which is wholly-owned by us. In addition, we also contributed a portion of our customer receivables to the special purpose entity in connection with its establishment. We retain servicing responsibility. The special purpose entity, as borrower, and we, as servicer, have entered into a Credit and Security Agreement with several lenders pursuant to which the special purpose entity may borrow from the lenders up to $200.0 million, with the loans secured by the receivables. The amount that the special purpose entity may borrow at a given point in time is determined based on the amount of qualifying receivables that are present in the special purpose entity at such point in time. The entire amount available was borrowed in the third quarter of fiscal 2016. Borrowings outstanding under the Securitization Program bear interest at LIBOR plus the applicable margin of 0.7% and are included as a component of current liabilities in our consolidated balance sheet, while the accounts receivable securing these obligations remain as a component of net receivables in our consolidated balance sheet. As of September 24, 2016, the interest rate under the Securitization Program was 1.22% on the outstanding amounts. We and the special purpose entity are operated and maintained as separate legal entities. The assets of the special purpose entity secure the amounts borrowed and cannot be used to pay our other debts or liabilities. The special purpose entity is not a guarantor under our Credit Agreement and is not a guarantor of our 2022 Senior Notes.

The Credit and Security Agreement contains customary representations and warranties and events of default, including payment defaults, breach of representations and warranties, covenant defaults, and an event of default upon a change of control. In addition, it contains financial covenants consistent with that of the Credit Agreement. As of September 24, 2016, we were in compliance with these covenants.

Stock Repurchase Program

On June 21, 2016, the Board of Directors authorized the repurchase of up to an additional $500.0 million of the Company's outstanding common stock over the next five years. There were no repurchases of common stock made under this authorization during fiscal 2016.

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Contractual Obligations

The following table summarizes our contractual obligations and commitments as of September 24, 2016:

	Payments Due by Period
Contractual Obligations	Less than 1 year		1-3 years		3-5 years		More than 5 years		Total
Long-Term Debt Obligations (1)	$	296.7	$	1,062.3	$	1,050.0	$	1,000.0	$	3,409.0
Interest on Long-Term Debt Obligations	91.0		157.5		119.1		43.4		411.0
Operating Leases	17.3		26.0		14.9		14.3		72.5
Financing Leases (2)	3.1		4.1		2.4		2.8		12.4
Purchase Obligations (3)	58.5		28.6		—		—		87.1
Royalty and Collaborative Commitments (4)	0.7		1.2		1.0		2.7		5.6
Pension Obligations (5)	0.3		0.7		0.8		9.2		11.0
Total Contractual Obligations	$	467.6	$	1,280.4	$	1,188.2	$	1,072.4	$	4,008.6

(1) Included within long-term debt obligations are our 2010 Notes which are convertible by their respective holders and which we have elected to redeem in the first quarter of fiscal 2017 as further discussed above. In addition, we have two other issuances (2012 Notes and 2013 Notes) of convertible notes which can first be put to us on March 1, 2018 ($363.4 million principal), and December 15, 2017 ($370.0 million principal) and we have assumed for purposes of the above table that the principal amounts for each issuance will be paid off when they first can be put to us, which is in fiscal 2017 and fiscal 2018. The 2013 Notes also have principal accretion of 4.00% annually, which is included in the principal amount in the 1-3 years column above. The amounts in the table do not include deferred tax liabilities for the recapture of the original issuance discount.

(2) The financing leases represent two leases for an office building and a manufacturing facility, which were required to be recorded on our balance sheet under U.S. GAAP. See Note 10 to our consolidated financial statements contained in Item 15 of this Annual Report.

(3) Purchase obligations primarily represent minimum purchase commitments for inventory and instruments and, to a lesser extent, other operating expense commitments.

(4) Represents minimum royalties due on net sales of products incorporating licensed technology and subject to a minimum annual royalty payment, and payments under collaborative agreements. In addition to the minimum payments due under our collaborative agreements included above, we may be required to pay up to $5.3 million in milestone payments, plus royalties on net sales of any products using specified technology.

(5) Pension obligations do not include our obligation under our deferred compensation plans of $37.0 million, which is recorded as a current liability. Deferred compensation plan benefits are generally paid out at retirement or termination of employment.

The above table does not reflect our long-term liabilities associated with uncertain tax positions recorded under FIN 48 (codified primarily in ASC 740, Income Taxes) totaling $167.6 million. Due to the complexity associated with tax uncertainties, we cannot reasonably make a reliable estimate of the period in which we expect to settle these non-current liabilities. See Note 6 to our consolidated financial statements contained in Item 15 of this Annual Report for more information on our unrecognized tax benefits.

Future Liquidity Considerations

We expect to continue to review and evaluate potential strategic transactions and alliances that we believe will complement our current or future business. Subject to the Risk Factors set forth in Part I, Item 1A of this Annual Report and the general disclaimers set forth in our Special Note Regarding Forward-Looking Statements at the outset of this Annual Report, we believe that cash flow from operations and the cash available under our Revolver and permitted accounts receivable securitization program will provide us with sufficient funds in order to fund our expected normal operations, and debt payments, including interest over the next twelve months. Our longer-term liquidity is contingent upon future operating performance. We may also require additional capital in the future to fund capital expenditures, repayment of debt, acquisitions or other investments, or to repay our convertible notes and related deferred tax liabilities. As described above, we have significant indebtedness outstanding under our Credit Agreement, 2022 Senior Notes, convertible notes and accounts receivable securitization program. These capital requirements could be substantial. Our operating performance may also be affected by

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matters discussed under the above-referenced Risk Factors set forth elsewhere in this report. These risks, trends and uncertainties may also adversely affect our long-term liquidity.

Legal Contingencies

We are currently involved in certain legal proceedings and claims. In connection with these legal proceedings and claims, management periodically reviews estimates of potential costs to be incurred by us in connection with the adjudication or settlement, if any, of these proceedings. These estimates are based on an analysis of potential litigation outcomes and settlement strategies. In accordance with ASC 450, Contingencies, loss contingencies are accrued if, in the opinion of management, an adverse outcome is probable and such outcome can be reasonably estimated. It is possible that future results for any particular quarter or annual period may be materially affected by changes in our assumptions or the effectiveness of our strategies relating to these proceedings.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

The discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles. The preparation of these consolidated financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. On an on-going basis, we evaluate our estimates, including those related to revenue recognition for multiple element arrangements, allowance for doubtful accounts, reserves for excess and obsolete inventories, valuations, purchase price allocations and contingent consideration related to business combinations, expected future cash flows including growth rates, discount rates, terminal values and other assumptions used to evaluate the recoverability of long-lived assets and goodwill, estimated fair values of intangible assets and goodwill, amortization methods and periods, warranty reserves, certain accrued expenses, restructuring and other related charges, stock-based compensation, contingent liabilities, tax reserves and recoverability of our net deferred tax assets and related valuation allowances. We base our estimates on historical experience and various other assumptions that are believed to be reasonable under the circumstances. Actual results could differ from these estimates if past experience or other assumptions do not turn out to be substantially accurate. Any differences may have a material impact on our financial condition and results of operations.

The following is a discussion of what we believe to be the more significant critical accounting policies and estimates used in the preparation of our consolidated financial statements.

Inventory

Our inventories include material, labor and overhead, and are stated at the lower of cost (first-in, first-out) or market. As a developer and manufacturer of high technology medical equipment and diagnostic test kits, we may be exposed to a number of economic and industry factors that could result in portions of our inventory becoming either obsolete or in excess of anticipated usage. These factors include, but are not limited to, technological changes in our markets, our ability to meet changing customer requirements, competitive pressures on products and prices, and reliability and replacement of and the availability of key components from our suppliers. Our policy is to establish inventory reserves when conditions exist that suggest that our inventory may be in excess of anticipated demand or is obsolete based upon our assumptions about future demand for our products and market conditions. We regularly evaluate our ability to realize the value of our inventory based on a combination of factors including the following: historical usage rates, forecasted sales or usage, product expiration or end of life dates, estimated current and future market values and new product introductions. Assumptions used in determining our estimates of future product demand may prove to be incorrect, in which case the provision required for excess and obsolete inventory would have to be adjusted in the future. If inventory is determined to be overvalued, excess or obsolete, we would be required to record impairment charges within cost of goods sold at the time of such determination. Although considerable effort is made to ensure the accuracy of our forecasts of future product demand, any significant unanticipated changes in demand or expected usage could have a significant negative impact on the value of our inventory and our operating results.

Accounts Receivable Reserves

We maintain allowances for doubtful accounts for estimated losses resulting from the inability of our customers to make required payments. We regularly evaluate the collectability of our trade receivables based on a combination of factors, including discussions with the customer to determine the cause of non-payment, and evaluation of the customer’s current financial situation. In the event it is determined that the customer may not be able to meet its full obligation to us, we record a specific allowance to reduce the receivable to the amount that we expect to recover given all information present. We perform ongoing credit evaluations of our customers and adjust credit limits based upon payment history and our assessment of the customer’s current credit worthiness. We continuously monitor collections from our customers and maintain a provision for estimated credit losses based upon our historical experience and any specific customer collection issues that we have identified.

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While such credit losses have historically been within our expectations and the provisions established, we cannot guarantee that we will continue to experience the same credit loss rates in the future. If the financial condition of our customers were to deteriorate, additional allowances may be required.

We also record a provision for estimated sales returns and allowances on product sales in the same period as the related revenues are recorded. These estimates are based on the specific facts and circumstances of particular orders, analysis of credit memo data and other known factors. If the data we use to calculate these estimates do not properly reflect reserve requirements, then a change in the allowances would be made in the period in which such a determination is made and revenues in that period could be adversely affected.

Business Combinations

We record tangible and intangible assets acquired and liabilities assumed in business combinations under the purchase method of accounting. Amounts paid for each acquisition are allocated to the assets acquired and liabilities assumed based on their fair values at the dates of acquisition. Contingent consideration, which is not deemed to be linked to continuing employment, is recorded at fair value as measured on the date of acquisition. The value recorded is based on estimates of future financial projections under various potential scenarios, which are generally probability weighted as to the outcome of each scenario. These cash flow projections are discounted with an appropriate risk adjusted rate. Quarterly until such contingent amounts are earned, the fair value of the liability is reassessed at each reporting period and adjusted as a component of operating expenses based on changes to the underlying assumptions. The estimates used to determine the fair value of the contingent consideration liability are subject to significant judgment and actual results are likely to differ from the amounts originally recorded.

The fair value of identifiable intangible assets is based on detailed valuations that use information and assumptions provided by management, which consider management’s best estimate of inputs and assumptions that a market participant would use. We allocate any excess purchase price over the fair value of the net tangible and intangible assets acquired and liabilities assumed to goodwill.

We generally use the income approach in which cash flow projections on an after-tax basis are discounted using a risk adjusted rate to determine the estimated fair value of certain other identifiable intangible assets including developed technology, customer relationships and contracts, and trade names. Developed technology represents patented and unpatented technology and know-how. Customer relationships represent established relationships with customers, which provide a ready channel for the sale of additional products and services. Trade names represent acquired company and product names.

With respect to property, plant and equipment, we estimate the fair value of these assets using a combination of the cost and market approaches, depending on the component. Generally, we apply the cost approach as the primary method in estimating the fair value of land and buildings as the market approach is less reliable based on potential significant differences between the property being valued and the potentially comparable sales of similar properties.

Intangible Assets and Goodwill

Intangible Assets

We amortize our intangible assets that have finite lives using either the straight-line method or, if reliably determinable, based on the pattern in which the economic benefit of the asset is expected to be consumed. The economic pattern is based on undiscounted future cash flows. Amortization is recorded over the estimated useful lives ranging from 2 to 30 years. We review our intangible assets subject to amortization to determine if any adverse conditions exist or a change in circumstances has occurred that would indicate impairment or a change in the remaining useful life. In the event an indicator of impairment is identified, we perform an analysis comparing the undiscounted cash flow the asset group is expected to generate over its remaining economic life to its carrying value. The undiscounted cash flows are based on management's assumptions on the asset group's use in the future. If the carrying value of an asset exceeds its undiscounted cash flows, we will write-down the carrying value of the intangible asset to its fair value in the period identified. In assessing fair value, we must make assumptions regarding estimated future cash flows and discount rates. If these estimates or related assumptions change in the future, we may be required to record impairment charges. We generally determine fair value based on the present value of estimated future cash flows to be generated by the asset using a risk-adjusted discount rate. If the estimate of an intangible asset’s remaining useful life has changed, we will amortize the remaining carrying value of the intangible asset prospectively over the revised remaining useful life.

Goodwill

We test goodwill at the reporting unit level for impairment on an annual basis and between annual tests if events and circumstances indicate it is more likely than not that the fair value of a reporting unit is less than its carrying value. Events that

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could indicate impairment and trigger an interim impairment assessment include, but are not limited to current economic and market conditions, including a decline in market capitalization, a significant adverse change in legal factors, business climate, operational performance of the business or key personnel, and an adverse action or assessment by a regulator. Our annual impairment test date is the first day of our fiscal fourth quarter.

In performing the test, we utilize the two-step approach prescribed under ASC 350. The first step requires a comparison of the reporting unit’s carrying value to its fair value. We consider a number of factors to determine the fair value of a reporting unit, including an independent valuation to conduct this test. The valuation is based upon expected future discounted operating cash flows of the reporting unit as well as analysis of recent sales and ratio comparisons of similar companies. We base the discount rate on the weighted average cost of capital, or WACC, of market participants. If the carrying value of a reporting unit exceeds its estimated fair value, we will perform the second step of the goodwill impairment test to measure the amount of impairment loss, if any. The second step of the goodwill impairment test compares the implied fair value of a reporting unit’s goodwill to its carrying value. The second step requires us to perform a hypothetical purchase price allocation as of the measurement date and estimate the fair value of net tangible and intangible assets. The fair value of intangible assets is determined as described above and is subject to significant judgment.

We conducted our fiscal 2016 annual impairment test on the first day of the fourth quarter. We utilized discounted cash flows, or DCF, and market approaches to estimate the fair value of our reporting units as of June 26, 2016 and ultimately used the fair value determined by the DCF in making our impairment test conclusions. We believe we used reasonable estimates and assumptions about future revenue, cost projections, cash flows, market multiples and discount rates as of the measurement date. As a result of completing Step 1, all of the reporting units had fair values exceeding their carrying values, and as such, Step 2 of the impairment test was not required for those reporting units. For illustrative purposes, had the fair value of each of our reporting units been lower by 10%, all of our reporting units would still have passed Step 1 of the goodwill impairment test.

Since the fair value of our reporting units was determined by use of the DCF, and the key assumptions that drive the fair value in this model are the WACC, terminal values, growth rates, and the amount and timing of expected future cash flows, significant judgment is applied in determining fair value. If the current economic environment were to deteriorate, this would likely result in a higher WACC because market participants would require a higher rate of return. In the DCF as the WACC increases, the fair value decreases. The other significant factor in the DCF is our projected financial information (i.e., amount and timing of expected future cash flows and growth rates) and if these assumptions were to be adversely impacted, this could result in a reduction of the fair value of a reporting unit.

At September 24, 2016, we believe that all reporting units with goodwill aggregating $2.8 billion were not at risk of failing Step 1 of the goodwill impairment test based on our current forecasts.

We conducted our fiscal 2015 and 2014 annual impairment tests on the first day of the respective year's fourth quarter. We used the fair value determined by the DCF in making our impairment test conclusions. We believe we used reasonable estimates and assumptions about future revenue, cost projections, cash flows, market multiples and discount rates as of the measurement dates. As a result of completing Step 1, all of the reporting units had fair values exceeding their carrying values, and as such, Step 2 of the impairment tests were not required.

Revenue Recognition

We generate revenue from the sale of products, primarily medical imaging systems and diagnostic and surgical disposable products, and related services, which are primarily support and maintenance services on our medical imaging systems.

We recognize product revenue upon shipment provided that there is persuasive evidence of an arrangement, there are no uncertainties regarding acceptance, the sales price is fixed or determinable, and collection of the resulting receivable is reasonably assured. Generally, our product arrangements for capital equipment sales, primarily in our Breast Health and Skeletal Health reporting segments, are multiple-element arrangements, including services, such as installation and training, and multiple products. In accordance with ASC 605-25, based on the terms and conditions of the product arrangements, we believe that these services and undelivered products can be accounted for separately from the delivered product element as our delivered products have value to our customers on a stand-alone basis. Accordingly, revenue for services not yet performed at the time of product shipment are deferred and recognized as such services are performed. The relative selling price of any undelivered products is also deferred at the time of shipment and recognized as revenue when these products are delivered. There is no customer right of return in our sales agreements.

Service revenues primarily consist of amounts recorded under service and maintenance contracts and repairs not covered under warranty, installation and training, and shipping and handling costs billed to customers. Service and maintenance contract

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revenues are recognized ratably over the term of the contract. Other service revenues are recognized as the services are performed.

For revenue arrangements with multiple deliverables, we record revenue as separate units of accounting if the delivered items have value to the customer on a stand-alone basis, and if the arrangement includes a general right of return relative to the delivered items, the delivery or performance of the undelivered items is considered probable and substantially within our control. Some of our products have both software and non-software components that function together to deliver the product’s essential functionality. We determined that except for our CAD products and C-View product, the software element in our other products is incidental and not within the scope of the software revenue recognition rules, ASC 985-605, Software—Revenue Recognition. We determined that given the significance of the software component’s functionality to our CAD and C-View systems, which are sold by our Breast Health segment, these products are within the scope of the software revenue recognition rules. We evaluated the appropriate revenue recognition treatment of our other hardware products, including our Dimensions digital mammography systems, which have both software and non-software components that function together to deliver the products’ essential functionality (i.e., it is a tangible product), and determined they are not within the scope of ASC 985-605.

We are required to allocate revenue to multiple element arrangements based on the relative fair value of each element’s selling price. We typically determine the selling price of our products based on our best estimate of selling price, referred to as ESP, and services based on vendor-specific objective evidence of selling price, referred to as VSOE. We determine VSOE based on our normal pricing and discounting practices for the specific product or service when sold on a stand-alone basis. In determining VSOE, our policy requires a substantial majority of selling prices for a product or service to be within a reasonably narrow range. We also consider the class of customer, method of distribution, and the geographies into which our products and services are sold when determining VSOE. If VSOE cannot be established, which may occur in instances when a product or service has not been sold separately, stand-alone sales are too infrequent, or product pricing is not within a narrow range, we will generally establish the selling price using ESP to allocate arrangement consideration. The objective of ESP is to determine the price at which we would typically transact a stand-alone sale of the product or service. ESP is determined by considering a number of factors including our pricing policies, internal costs and gross margin objectives, method of distribution, information gathered from experience in customer negotiations, market research and information, recent technological trends, competitive landscape and geographies.

For those arrangements accounted for under the software revenue recognition rules, ASC 985-605 generally requires revenue earned on software arrangements involving multiple elements to be allocated to each element based on their relative VSOE of fair value. If VSOE does not exist for a delivered element, the residual method is applied in which the arrangement consideration is allocated to the undelivered elements based on their VSOE with the remaining consideration recognized as revenue for the delivered elements. For multiple-element software arrangements where VSOE of fair value of Post-Contract Customer Support, referred to as PCS, has been established, we recognize revenue using the residual method at the time all other revenue recognition criteria have been met.

As part of our Diagnostics reporting segment, we manufacture blood screening products according to demand schedules provided by our collaboration partner, Grifols. Our agreement provides that we share a portion of Grifols’s revenue from screening blood donations. Upon shipment to Grifols, we recognize blood screening product sales at an agreed upon fixed transfer price, which is not refundable, and record the related cost of products sold. Based on the terms of our collaboration agreement with Grifols, our ultimate share of the net revenue from sales to the end user in excess of the transfer price revenues recognized is not known until it is reported to us by Grifols. On a monthly basis, Grifols reports net revenue generated during the prior month and remits an additional corresponding net payment to us which we record as revenue at that time. This payment combined with the transfer price revenues previously recognized represents our ultimate share of net revenue under the agreement.

While the majority of our instruments are placed at customer sites, in certain instances, we sell instruments to our clinical diagnostics customers and record sales of these instruments upon shipment or delivery, depending on the terms of the arrangement.

Within our Diagnostics business and, to a lesser extent, our GYN Surgical business, we provide our instrumentation (for example, the ThinPrep Processor, ThinPrep Imaging System, Panther and Tigris) and certain other hardware to customers without requiring them to purchase the equipment or enter into a lease. Instead, we recover the cost of providing the instrumentation and equipment in the amount we charge for our diagnostic tests and assays and other disposables. Customers enter into a customer usage agreement, and we install the equipment at customer sites and customers commit to purchasing minimum quantities of disposable products at a stated price over a defined contract term, which is typically between three and five years. Revenue is recognized over the term of the customer usage agreement as tests, assays and other disposable products are shipped or delivered, depending on the customer arrangement.

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Stock-Based Compensation

We recognize stock-based compensation expense associated with the granting of stock options, restricted stock units and performance stock units issued to our employees. Determining the amount of stock-based compensation to be recorded requires us to develop estimates to be used in calculating the grant-date fair value of stock options. We use a binomial lattice model to determine the fair value of our stock options. We consider a number of factors to determine the fair value of stock options including the advice of an outside valuation advisor and the advisor’s model. The model requires us to make estimates of the following assumptions:

Expected volatility—We are responsible for estimating volatility and have considered a number of factors, including third-party estimates, when estimating volatility. We currently use a combination of historical and implied volatility, which is weighted based on a number of factors.

Expected term—We use historical employee exercise and option expiration data to estimate the expected term assumption. We believe that this historical data is currently the best estimate of the expected term of a new option, and that generally, all of our employees exhibit similar exercise behavior.

Risk-free interest rate—The yield on zero-coupon U.S. Treasury securities for a period that is commensurate with the expected term assumption is used as the risk-free interest rate.

The amount of stock-based compensation expense recognized during a period is based on the value of the portion of the awards that are ultimately expected to vest. ASC 718, Stock Compensation, requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Based on an analysis of historical forfeitures, we have determined a specific forfeiture rate for certain employee groups and have applied forfeiture rates ranging from 0% to 7.0% as of September 24, 2016 depending on the specific employee group. This analysis is re-evaluated periodically and the forfeiture rate is adjusted as necessary. Ultimately, the actual expense recognized over the vesting period will only be for those awards that vest.

We granted performance stock units to members of our senior management team during fiscal 2014, 2015 and 2016. Each recipient of a performance stock unit is eligible to receive between zero and 200% of the target number of shares of our common stock at the end of three years provided our defined Return on Invested Capital, or ROIC, metrics are achieved. We recognize compensation expense ratably over the required service period based on an estimate of the probability that the measurement criteria will be achieved for a targeted number of shares. Our estimate of the number of shares that are probable of vesting is based on our estimate of ROIC over the respective time periods using our internal forecasts and projections. If there is a change in the estimate of the number of shares that are probable of vesting, we will cumulatively adjust compensation expense in the period that the change in estimate is made.

We recognized $65.4 million, $59.3 million and $50.0 million of stock-based compensation expense for employee equity awards in fiscal years 2016, 2015 and 2014, respectively. As of September 24, 2016, there was $21.2 million and $66.6 million of unrecognized compensation expense related to stock options and stock units, respectively, that we expect to recognize over a weighted-average period of 2.8 years and 2.0 years, respectively.

Income Taxes

We use the asset and liability method for accounting for income taxes. Under this method, we determine deferred tax assets and liabilities based on the difference between our assets and liabilities financial reporting and taxes bases. We measure deferred tax assets and liabilities using enacted tax rates and laws that will be in effect when we expect the differences to reverse.

We have recognized $973.3 million in net deferred tax liabilities at September 24, 2016 and $1.16 billion at September 26, 2015. The liabilities primarily relate to deferred taxes associated with our acquisitions and debt. The tax assets relate primarily to net operating loss carryforwards, accruals and reserves, stock-based compensation, and research credits. We record a valuation allowance to reduce our deferred tax assets to the amount that is more likely than not to be realized. While we have considered future taxable income and the character of such income in assessing the need for the valuation allowance, in the event we determine that we could realize our deferred tax assets in the future in excess of the net recorded amount, an adjustment to the deferred tax assets would increase income in the period such determination is made. Likewise, should we determine that we would not be able to realize all or part of our net deferred tax assets in the future, an adjustment to the deferred tax assets would be charged to income in the period such determination is made.

At September 24, 2016, we had $163.6 million in gross unrecognized tax benefits excluding interest, of which $80.1 million, if recognized, would reduce our effective tax rate. At September 26, 2015, we had $154.7 million in gross unrecognized tax benefits excluding interest, of which $74.9 million, if recognized, would have reduced our effective tax rate. I

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n the next twelve months, it is reasonably possible that we will reduce our unrecognized tax benefits by up to $1.0 million due to expiring statutes of limitations.

In the ordinary course of business, there are many transactions and calculations where the ultimate tax outcome is uncertain. Judgment is required in determining our worldwide income tax provision. In our opinion, we have made adequate provisions for income taxes for all years subject to audit. While we consider our estimates reasonable, no assurance can be given that the final tax outcome will not be different than amounts reflected in our historical income tax provisions and accruals. If our assumptions are incorrect, the differences could have a material impact on our income tax provision and operating results in the period in which such determination is made.

Recent Accounting Pronouncements

In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740). The guidance requires companies to recognize the income tax effects of intercompany sales and transfers of assets, other than inventory, in the income statement as income tax expense (or benefit) in the period in which the transfer occurs. The guidance is effective for annual periods beginning after December 15, 2017, and is applicable to us in fiscal 2019. Early adoption is permitted for all entities as of the beginning of an annual reporting period. We are currently evaluating the impact of the adoption of ASU 2016-16 on our consolidated financial position and results of operations.

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flow (Topic 230). The guidance reduces diversity in how certain cash receipts and cash payments are presented and classified in the Statements of Cash Flows. Certain of ASU 2016-15 requirements are as follows: 1) cash payments for debt prepayment or debt extinguishment costs should be classified as cash outflows for financing activities, 2) contingent consideration payments made soon after a business combination should be classified as cash outflows for investing activities and cash payment made thereafter should be classified as cash outflows for financing up to the amount of the contingent consideration liability recognized at the acquisition date with any excess classified as operating activities, 3) cash proceeds from the settlement of insurance claims should be classified on the basis of the nature of the loss, 4) cash proceeds from the settlement of Corporate-Owned Life Insurance (COLI) Policies should be classified as cash inflows from investing activities and cash payments for premiums on COLI policies may be classified as cash outflows for investing activities, operating activities, or a combination of investing and operating activities, and 5) cash paid to a tax authority by an employer when withholding shares from an employee's award for tax-withholding purposes should be classified as cash outflows for financing activities. The guidance is effective for annual periods beginning after December 15, 2017, and is applicable to us in fiscal 2019. Early adoption is permitted. The adoption of ASU 2016-15 is not expected to have a material effect on our consolidated financial statements.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326). The guidance requires that financial assets measured at amortized cost be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis. The income statement reflects the measurement of credit losses for newly recognized financial assets, as well as the expected credit losses during the period. The measurement of expected credit losses is based upon historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. Credit losses relating to available-for-sale debt securities will be recorded through an allowance for credit losses rather than as a direct write-down to the security. The updated guidance is effective for annual periods beginning after December 15, 2019, and is applicable to us in fiscal 2021. Early adoption is permitted. We are currently evaluating the impact of the adoption of ASU 2016-13 on our consolidated financial position and results of operations.

In March 2016, the FASB issued ASU No. 2016-09, Compensation - Stock Compensation (Topic 718). The guidance changes how companies account for certain aspects of share-based payments to employees. Entities will be required to recognize income tax effects of awards in the income statement when the awards vest or are settled. The guidance also allows an employer to repurchase more of an employee's shares than it can today for tax withholding purposes by providing for withholding at the employee's maximum rate as opposed to the minimum rate without triggering liability accounting and by allowing an entity-wide policy election to account for forfeitures as they occur. The updated guidance is effective for annual periods beginning after December 15, 2016, and is applicable to us in fiscal 2018. Early adoption is permitted. The adoption of ASU 2016-09 is not expected to have a material effect on our consolidated financial statements or disclosures.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). The guidance requires an entity to recognize a right-of-use asset and a lease liability for virtually all of its leases with terms of more than 12 months. Recognition, measurement and presentation of expenses will depend on classification as a finance or operating lease. The amendments also require certain quantitative and qualitative disclosures about leasing arrangements. The guidance is effective for annual periods beginning after December 15, 2018, and is applicable to us in fiscal 2020. Early adoption is permitted. The updated guidance

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requires a modified retrospective adoption. We are currently evaluating the impact of the adoption of ASU 2016-02 on our consolidated financial position and results of operations.

In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. This guidance changes how entities measure equity investments that do not result in consolidation and are not accounted for under the equity method. Entities will be required to measure these investments at fair value at the end of each reporting period and recognize changes in fair value in net income. A practicability exception will be available for equity investments that do not have readily determinable fair values, however; the exception requires the Company to consider relevant transactions that can be reasonably known to identify any observable price changes that would impact the fair value. This guidance also changes certain disclosure requirements and other aspects of current US GAAP. This guidance is effective for annual periods beginning after December 15, 2017, and is applicable to us in fiscal 2019. Early adoption is permitted. We are currently evaluating the impact of the adoption of ASU 2016-01 on our consolidated financial position and results of operations.

In July 2015, the FASB issued guidance under Accounting Standards Codification (ASC) 330, Simplifying the Measurement of Inventory. The new guidance requires inventory to be measured at the lower of cost and net realizable value, which is defined as the estimated selling price in the ordinary course of business less reasonably predictable costs of completion, disposal and transportation. This new guidance is effective for our first quarter of fiscal year 2018 and early adoption is permitted. The guidance must be applied prospectively. We are currently evaluating the impact of the adoption of this requirement on our consolidated financial statements.

In February 2015, the FASB issued ASU No. 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis. This guidance focuses on a reporting company’s consolidation evaluation to determine whether certain legal entities should be consolidated. This guidance is effective for annual periods beginning after December 15, 2015, and is applicable to us in fiscal 2017. Early adoption is permitted, including adoption in an interim period. We are currently evaluating this guidance, but do not anticipate that adoption of this guidance will have a material impact on our consolidated financial statements.

In August 2014, the FASB issued ASU No. 2014-15, Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern. ASU 2014-15 requires management to evaluate, at each annual or interim reporting period, whether there are conditions or events that exist that raise substantial doubt about an entity's ability to continue as a going concern within one year after the date the financial statements are issued and provide related disclosures. ASU 2014-15 is effective for annual periods ending after December 15, 2016 and is applicable to us in fiscal 2018. Earlier application is permitted. The adoption of ASU 2014-15 is not expected to have a material effect on our consolidated financial statements or disclosures.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 660), which provides guidance for revenue recognition. This ASU is applicable to any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets. ASU 2014-09 will supersede the revenue recognition requirements in Topic 605, Revenue Recognition, and most industry-specific guidance. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled to receive in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under current U.S. GAAP. These judgments may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. On July 9, 2015, the FASB voted in favor of delaying the effective date of the new standard by one year, with early adoption permitted as of the original effective date. ASU 2014-09 is effective prospectively for fiscal years, and interim reporting periods within those years, beginning after December 15, 2017, which is our fiscal 2019. We are currently evaluating the impact of the adoption of ASU 2014-09 on our consolidated financial position and results of operations.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

Financial Instruments, Other Financial Instruments, and Derivative Commodity Instruments. Financial instruments consist of cash and cash equivalents, accounts receivable, publicly-traded equity securities, cost-method equity investments, interest rate cap agreements, insurance contracts and related deferred compensation plan liabilities, accounts payable and debt obligations. Except for our outstanding convertible notes and 2022 Senior Notes, the fair value of these financial instruments approximate their carrying amount. As of September 24, 2016, we had $745.7 million of principal of convertible notes outstanding, comprised of our 2010 Notes with a principal of $12.3 million, our 2012 Notes with a principal of $363.4 million, and our 2013 Notes with a principal of $370.0 million. The convertible notes are recorded net of the unamortized discount and

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deferred issuance costs on our consolidated balance sheets. The fair value of our 2010 Notes, 2012 Notes and 2013 Notes as of September 24, 2016 was approximately $20.2 million, $481.9 million and $458.8 million, respectively. The fair value of our 2022 Senior Notes was approximately $1.06 billion. Amounts outstanding under our Credit Agreement and Securitization Program of $1.41 billion and $200.0 million aggregate principal, respectively, as of September 24, 2016 are subject to variable rates of interest based on current market rates, and as such, we believe the carrying amount of these obligations approximates fair value.

Primary Market Risk Exposures. Our primary market risk exposure is in the areas of interest rate risk and foreign currency exchange rate risk. We incur interest expense on borrowings outstanding under our Convertible Notes, 2022 Senior Notes and Credit Agreement, as well as under our accounts receivable securitization program. The Convertible Notes and 2022 Senior Notes have fixed interest rates. Borrowings under our Credit Agreement currently bear interest at the Eurocurrency Rate (i.e., Libor) plus the applicable margin of 1.50% per annum. Borrowings under our accounts receivable securitization program currently bear interest at Libor plus the applicable margin of 0.7%.

As of September 24, 2016, there was $1.41 billion of aggregate principal outstanding under the Credit Agreement and $200.0 million aggregate principal outstanding under the securitization program. Since these debt obligations are variable rate instruments, our interest expense associated with these instruments is subject to change. A 10% adverse movement (increase in LIBOR rate) would increase annual interest expense by less than $1.0 million due to the low current interest rate environment. During fiscal 2015, we entered into multiple interest rate cap agreements to help mitigate the interest rate volatility associated with the variable rate interest on the amounts outstanding. The critical terms of the interest rate caps were designed to mirror the terms of our LIBOR-based borrowings under the Credit Agreement, and therefore the interest rate caps are highly effective at offsetting the cash flows being hedged. We designated these derivatives as cash flow hedges of the variability of the Libor-based interest payments on $1.0 billion of principal over a three-year period, which ends on December 31, 2017.

The return from cash and cash equivalents will vary as short-term interest rates change. A hypothetical 10% increase or decrease in interest rates, however, would not have a material adverse effect on our financial condition.

Foreign Currency Exchange Risk. Our international business is subject to risks, including, but not limited to: unique economic conditions, changes in political climate, differing tax structures, other regulations and restrictions, and foreign exchange rate volatility. Accordingly, our future results could be materially adversely impacted by changes in these or other factors.

We conduct business worldwide and maintain sales and service offices outside the United States as well as manufacturing facilities in Costa Rica and the United Kingdom. Our international sales are denominated in a number of currencies, primarily the Euro, U.S. dollar, UK Pound and Renminbi. The majority of our foreign subsidiaries functional currency is the local currency, although certain foreign subsidiaries functional currency is the U.S. dollar based on the nature of their operations or functions. Fluctuations in the foreign currency rates could affect our sales, cost of goods and operating margins and could result in exchange losses. In addition, currency devaluations can result in a loss if we hold deposits of that currency. We have executed forward foreign currency contracts to hedge a portion of results denominated in the Euro, UK Pound, Australian dollar, Japanese Yen and Canadian dollar. These contracts do not qualify for hedge accounting. As a result, we may experience volatility in our Consolidated Statements of Income due to (i) the impact of unrealized gains and losses reported in other income (expense), net on the mark-to-market of outstanding contracts and (ii) realized gains and losses recognized in other income, net, whereas the offsetting economic gains and losses are reported in the line item of the underlying cash flow, for example, revenue.

We believe that the operating expenses of our international subsidiaries that are incurred in local currencies will not have a material adverse effect on our business, results of operations or financial condition. Our operating results and certain assets and liabilities that are denominated in foreign currencies are affected by changes in the relative strength of the U.S. dollar against those currencies. Our expenses, denominated in foreign currencies, are positively affected when the U.S. dollar strengthens against those currencies and adversely affected when the U.S. dollar weakens. However, we believe that the foreign currency exchange risk is not significant. We do not believe a hypothetical 10% increase or decrease in foreign currencies that we transact in would not have a material adverse impact on our financial condition or results of operations. During fiscal 2016, 2015 and 2014, we incurred net foreign exchange losses of $(1.0) million, $(3.0) million and $(1.8) million, respectively.

Item  8. Financial Statements and Supplementary Data

Our Consolidated Financial Statements and Supplementary Data are listed under Part IV, Item 15, in this report.

Item  9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

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Item  9A. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our Securities Exchange Act reports is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, as ours are designed to do, and management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

As of September 24, 2016, we carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934. Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures are effective.

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Report of Management on Internal Control over Financial Reporting

We are responsible for establishing and maintaining adequate internal control over financial reporting. Internal control over financial reporting is defined in Rule 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934, as amended, as a process designed by, or under the supervision of our principal executive and principal financial officers and effected by our board of directors, management and other personnel to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles and includes those policies and procedures that:

• pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and disposition of our assets;

• provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that our receipts and expenditures are being made only in accordance with authorization of our management and directors; and

• provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on the financial statements.

Our internal control system was designed to provide reasonable assurance to our management and board of directors regarding the preparation and fair presentation of published financial statements. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation of effectiveness to future periods are subject to the risks that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Management has assessed the effectiveness of our internal control over financial reporting as of September 24, 2016. In making this assessment, we used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (COSO) in Internal Control-Integrated Framework.

Subject to the foregoing, based on management’s assessment, we believe that, as of September 24, 2016, our internal control over financial reporting is effective at a reasonable assurance level based on these criteria.

Ernst & Young LLP, an independent registered public accounting firm, has issued an attestation report on the effectiveness of our internal control over financial reporting. This report in which they expressed an unqualified opinion is included below.

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Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders of Hologic, Inc.:

We have audited Hologic, Inc.’s internal control over financial reporting as of September 24, 2016, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). Hologic, Inc.’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Report of Management on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, Hologic, Inc. maintained, in all material respects, effective internal control over financial reporting as of September 24, 2016, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of Hologic, Inc. as of September 24, 2016 and September 26, 2015 and the related consolidated statements of income, comprehensive income (loss), stockholders’ equity and cash flows for each of the three years in the period ended September 24, 2016 of Hologic, Inc. and our report dated November 17, 2016 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Boston, Massachusetts

November 17, 2016

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Changes in Internal Control over Financial Reporting

During the quarter ended September 24, 2016, there have been no changes in our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Item  9B. Other Information

None.

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PART III

Item  10. Directors, Executive Officers and Corporate Governance

Pursuant to Section 406 of the Sarbanes-Oxley Act of 2002, we have adopted a Code of Ethics for Senior Financial Officers that applies to our principal executive officer and principal financial officer, principal accounting officer and controller, and other persons performing similar functions. Our Code of Ethics for Senior Financial Officers is publicly available on our website at investors.hologic.com as Appendix A to our Code of Conduct. We intend to satisfy the disclosure requirement under Item 5.05 of Current Report on Form 8-K regarding an amendment to, or waiver from, a provision of this code by posting such information on our website, at the address specified above.

The additional information required by this item is incorporated by reference to our Definitive Proxy Statement for our annual meeting of stockholders to be filed with the Securities and Exchange Commission within 120 days after the close of our fiscal year.

Item  11. Executive Compensation

The information required by this item is incorporated by reference to our Definitive Proxy Statement for our annual meeting of stockholders to be filed with the Securities and Exchange Commission within 120 days after the close of our fiscal year.

Item  12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

We maintain a number of equity compensation plans for employees, officers, directors and others whose efforts contribute to our success. The table below sets forth certain information as of the end of our fiscal year ended September 24, 2016 regarding the shares of our common stock available for grant or granted under stock option plans and equity incentives that (i) were approved by our stockholders, and (ii) were not approved by our stockholders.

Equity Compensation Plan Information

Plan Category	Number of securities to be issued upon exercise  of outstanding options, warrants and  rights (a)	Weighted-average exercise  price  of outstanding options, warrants and  rights (b) (2)		Number of  securities remaining available for future issuance under equity compensation plans (excluding securities  reflected in column (a)) (c)
Equity compensation plans approved by security holders (1)	9,882,988	$	25.37	8,320,216
Equity compensation plans not approved by security holders	—	$	—	—
Total	9,882,988	$	25.37	8,320,216

___________

(1) Includes 3,845,862 shares that are issuable upon restricted stock units (RSUs), and performance stock units (PSUs) vesting. The remaining balance consists of outstanding stock option grants.

(2) The weighted average exercise price does not take into account the shares issuable upon vesting of outstanding RSUs and PSUs, which have no exercise price.

The additional information required by this item is incorporated by reference to our Definitive Proxy Statement for our annual meeting of stockholders to be filed with the Securities and Exchange Commission within 120 days after the close of our fiscal year.

Item  13. Certain Relationships and Related Transactions and Director Independence

The information required by this item is incorporated by reference to our Definitive Proxy Statement for our annual meeting of stockholders to be filed with the Securities and Exchange Commission within 120 days after the close of our fiscal year.

71

Item  14. Principal Accounting Fees and Services

The information required by this item is incorporated by reference to our Definitive Proxy Statement for our annual meeting of stockholders to be filed with the Securities and Exchange Commission within 120 days after the close of our fiscal year.

72

PART IV

Item  15. Exhibits and Financial Statement Schedules

(a) The following documents are filed as part of this report:

(1) Financial Statements

Report of Independent Registered Public Accounting Firm on Consolidated Financial Statements

Consolidated Statements of Income for the years ended September 24, 2016, September 26, 2015 and September 27, 2014

Consolidated Statements of Comprehensive Income (Loss) for the years ended September 24, 2016, September 26, 2015 and September 27, 2014

Consolidated Balance Sheets as of September 24, 2016 and September 26, 2015

Consolidated Statements of Stockholders’ Equity for the years ended September 24, 2016, September 26, 2015 and September 27, 2014

Consolidated Statements of Cash Flows for the years ended September 24, 2016, September 26, 2015 and September 27, 2014

Notes to Consolidated Financial Statements

(2) Financial Statement Schedules

All schedules have been omitted because they are not required or because the required information is given in the Consolidated Financial Statements or Notes thereto.

(b) Listing of Exhibits

		Incorporated  by Reference
Exhibit Number	Exhibit Description	Form	Filing Date/ Period End Date
2.1	Agreement and Plan of Merger, dated April 29, 2012, by and among Hologic, Gold Acquisition Corp. and Gen-Probe Incorporated.	8-K	05/01/2012
3.1	Certificate of Incorporation of Hologic.	S-1	01/24/1990
3.2	Certificate of Amendment to Certificate of Incorporation of Hologic.	10-Q	03/30/1996
3.3	Certificate of Amendment to Certificate of Incorporation of Hologic.	10-K	09/24/2005
3.4	Certificate of Amendment to Certificate of Incorporation of Hologic.	8-K	10/22/2007
3.5	Certificate of Amendment to Certificate of Incorporation of Hologic.	8-K	03/11/2008
3.6	Certificate of Designation of Series A Junior Participating Preferred Stock of Hologic.	8-K	11/21/2013
3.7	Certificate of Elimination of Series A Junior Participating Preferred Stock of Hologic.	8-K	06/25/2014
3.8	Fifth Amended and Restated Bylaws of Hologic, Inc.	10-Q	03/04/2016
4.1	Specimen Certificate for Shares of Hologic’s Common Stock.	8-A	01/31/1990
4.2	Description of Capital Stock (Contained in Hologic’s Certificate of Incorporation, as amended, filed as Exhibits 3.1, 3.2, 3.3, 3.4 and 3.5 hereto).
4.3	Indenture, dated December 10, 2007, by and between Wilmington Trust Company, as Trustee, and Hologic.	8-K	12/10/2007

73

		Incorporated  by Reference
Exhibit Number	Exhibit Description	Form	Filing Date/ Period End Date
4.4	Second Supplemental Indenture, dated November 23, 2010, by and between Wilmington Trust Company, as Trustee, and Hologic.	10-K	09/25/2010
4.5	Form of 2.00% Convertible Exchange Senior Note due 2037 (included in Exhibit 4.4).	10-K	09/25/2010
4.6	Third Supplemental Indenture, dated March 5, 2012, by and between Wilmington Trust Company, as Trustee, and Hologic.	8-K	03/08/2012
4.7	Form of 2.00% Convertible Senior Note due 2042 (included in Exhibit 4.6).	8-K	03/08/2012
4.8	Fourth Supplemental Indenture, dated February 21, 2013, by and between Wilmington Trust Company, as Trustee, and Hologic.	8-K	02/21/2013
4.9	Form of 2.00% Convertible Senior Note due 2043 (included in Exhibit 4.8).	8-K	02/21/2013
4.10	Indenture, dated July 2, 2015, by and among Hologic, the guarantors party thereto and Wells Fargo Bank, National Association, as Trustee.	8-K	07/02/2015
4.11	Form of 5.250% Senior Note due 2022 (included in Exhibit 4.10).	8-K	07/02/2015
10.1*	Second Amended and Restated 1999 Equity Incentive Plan.	10-Q	03/25/2006
10.2*	Amendment No. 1 to Second Amended and Restated 1999 Equity Incentive Plan.	S-8	10/23/2007
10.3*	Amendment No. 2 to Second Amended and Restated 1999 Equity Incentive Plan.	8-K	10/22/2007
10.4*	Amendment No. 3 to Second Amended and Restated 1999 Equity Incentive Plan.	8-K	12/12/2008
10.5*	The 2003 Incentive Award Plan of Gen-Probe Incorporated as amended and restated.	S-8	08/02/2012
10.6*	Hologic Amended and Restated 2008 Equity Incentive Plan.	8-K	03/11/2013
10.7*	Form of Stock Option Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2014).	8-K	11/12/2013
10.8*	Form of Stock Option Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2015).	8-K	11/05/2014
10.9*	Form of Stock Option Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2016).	8-K	10/14/2015
10.10*	Form of Stock Option Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2017).	8-K	11/09/2016
10.11*	Form of Restricted Stock Unit Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2014).	8-K	11/12/2013
10.12*	Form of Restricted Stock Unit Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2016).	8-K	10/14/2015
10.13*	Form of Restricted Stock Unit Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2017).	8-K	11/09/2016
10.14*	Form of Performance Stock Unit Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2014).	8-K	11/12/2013
10.15*	Form of Performance Stock Unit Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2015).	8-K	11/05/2014

74

		Incorporated  by Reference
Exhibit Number	Exhibit Description	Form	Filing Date/ Period End Date
10.16*	Form of Performance Stock Unit Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2016).	8-K	11/06/2015
10.17*	Form of Performance Stock Unit Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2017).	8-K	11/09/2016
10.18*	Form of Independent Director Stock Option Award Agreement Under 2008 Equity Incentive Plan (annual grant, adopted fiscal 2014).	10-K	09/28/2013
10.19*	Form of Independent Director Stock Option Award Agreement Under 2008 Equity Incentive Plan (annual grant, adopted fiscal 2015).	10-K	09/27/2014
10.20*	Form of Independent Director Restricted Stock Unit Award Agreement Under 2008 Equity Incentive Plan (annual grant).	10-K	09/28/2013
10.21*	Form of Independent Director Stock Option Award Agreement Under 2008 Equity Incentive Plan (initial grant, adopted fiscal 2014).	10-K	09/28/2013
10.22*	Form of Independent Director Stock Option Award Agreement Under 2008 Equity Incentive Plan (initial grant, adopted fiscal 2015).	10-K	09/27/2014
10.23*	Form of Independent Director Restricted Stock Unit Award Agreement Under 2008 Equity Incentive Plan (initial grant).	10-K	09/28/2013
10.24*	Hologic, Inc. 2012 Employee Stock Purchase Plan, As Amended	8-K	03/04/2016
10.25*	Hologic Short-Term Incentive Plan.	8-K	11/06/2015
10.26*	Hologic Amended and Restated Deferred Equity Plan	8-K	12/16/2015
10.27*	Rabbi Trust Agreement.	10-K	09/28/2013
10.28*	Form of Indemnification Agreement (as executed with each director of Hologic).	8-K	03/06/2009
10.29*	Form of Senior Vice President Change of Control Agreement. (1)	10-Q	12/29/2012
10.30*	Form of Senior Vice President Severance Agreement. (1)	10-K	09/28/2013
10.31*	Employment Agreement dated December 6, 2013 by and between Stephen P. MacMillan and Hologic.	8-K	12/09/2013
10.32*	Amended and Restated Employment Agreement by and between the Company and Stephen P. MacMillan, dated September 18, 2015.	8-K	09/21/2015
10.33*	Amendment No. 1 to Amended and RestatedEmployment Agreement by and between the Company and Stephen P. MacMillan, dated September 24, 2016.	Filed herewith
10.34*	Form of Matching Restricted Stock Unit Award Agreement.	8-K	12/09/2013
10.35*	Change of Control Agreement dated December 6, 2013 by and between Stephen P. MacMillan and Hologic.	8-K	12/09/2013
10.36*	Offer Letter dated March 9, 2014 by and between Eric B. Compton and Hologic.	8-K	03/14/2014
10.37*	Severance and Change of Control Agreement dated March 9, 2014 by and between Eric B. Compton and Hologic. (2)	10-K	11/19/2015
10.38*	Offer Letter dated May 8, 2014 by and between Robert W. McMahon and Hologic.	8-K	05/13/2014
10.39*	Severance and Change of Control Agreement dated May 8, 2014 by and between Robert W. McMahon and Hologic. (2)	10-K	11/19/2015

75

		Incorporated  by Reference
Exhibit Number	Exhibit Description	Form	Filing Date/ Period End Date
10.40*	Offer Letter dated May 4, 2014 by and between Peter J. Valenti and Hologic.	10-Q	06/28/2014
10.41*	Senior Vice President Severance Agreement dated May 26, 2014 by and between Peter J. Valenti and Hologic.	10-K	09/27/2014
10.42*	Offer Letter dated August 21, 2014 by and between Thomas A. West and Hologic.	10-K	09/27/2014
10.43*	Senior Vice President Severance Agreement dated October 3, 2014 by and between Thomas A. West and Hologic.	10-K	09/27/2014
10.44*	Letter of Intent dated February 27, 2014 and Terms and Conditions of Employment dated March 10, 2014 by and between Claus Egstrand and Hologic.	10-K	09/27/2014
10.45*	Severance and Change of Control Agreement dated September 18, 2014 by and between Claus Egstrand and Hologic.	10-K	09/27/2014
10.46*	Offer Letter dated January 6, 2015 by and between John M. Griffin and Hologic.	10-Q	03/28/2015
10.47*	Severance and Change of Control Agreement dated February 2, 2015 by and between John M. Griffin and Hologic.	10-Q	03/28/2015
10.48	Facility Lease (Danbury) dated December 30, 1995 by and among Melvin J. Powers and Mary P. Powers D/B/A M&N Realty and Lorad.	Trex Medical Corporation S-1	03/29/1996
10.49	Lease Agreement (Danbury and Bedford) by and between BONE (DE) QRS 15-12, INC., and Hologic dated August 28, 2002.	10-K	09/28/2002
10.50	First Amendment to Lease Agreement (Danbury and Bedford) by and between BONE (DE) QRS 15-12, INC., and Hologic dated October 29, 2007.	10-K	09/29/2007
10.51	Office Lease dated December 31, 2003 between Cytyc and Marlborough Campus Limited Partnership.	Cytyc Corporation 10-K	12/31/2003
10.52	Lease Agreement by and between Zona Franca Coyol S.A. and Cytyc Surgical Products Costa Rica S.A. dated April 23, 2007.	10-K	09/29/2007
10.53	Lease Agreement by and between 445 Simarano Drive, Marlborough LLC and Cytyc dated July 11, 2006.	10-K	09/29/2007
10.54	Lease Guaranty dated October 22, 2007 between Bel Marlborough I LLC and Hologic, as guarantor thereunder.	8-K	10/22/2007
10.55	Form of Exchange Agreement.	8-K	02/15/2013
10.56	Credit and Guaranty Agreement, dated May 29, 2015, among Hologic, Hologic GGO 4 Ltd, each Designated Borrower from time to time party thereto, the Guarantors from time to time party thereto, each Lender from time to time party thereto and Bank of America, N.A., as Administrative Agent, Swing Line Lender and L/C Issuer.	8-K	05/29/2015
10.57	Pledge and Security Agreement, dated May 29, 2015, among the grantors party thereto and Bank of America, N.A. as Collateral Agent	10-Q	06/27/2015
10.58	Restated Agreement dated July 24, 2009 by and between Gen-Probe Incorporated and Novartis Vaccines and Diagnostics, Inc. ‡	Gen-Probe 10-Q/A	09/30/2009
10.59	First Amendment to Restated Agreement dated November 8, 2013 by and between Gen-Probe Incorporated and Novartis Vaccines and Diagnostics, Inc.	10-K	09/28/2013

76

		Incorporated  by Reference
Exhibit Number	Exhibit Description	Form	Filing Date/ Period End Date
10.60	Second Amendment to Restated Agreement by and between Gen-Probe Incorporated and Grifols Diagnostic Solutions Inc.‡	10-Q	06/27/2015
10.61	Supply Agreement for Panther Instrument System effective November 22, 2006 between Gen-Probe Incorporated and STRATEC Biomedical Systems AG. ‡	Gen-Probe 10-Q	09/30/2007
10.62	Amendment No. 1 dated June 1, 2011 to Supply Agreement for Panther Instrument System. ‡‡	Filed herewith
10.63	Amendment No. 2 dated February 28, 2013 to Supply Agreement for Panther Instrument System. ‡‡	Filed herewith
12.1	Ratio of Earnings to Fixed Charges.	Filed herewith
21.1	Subsidiaries of Hologic.	Filed herewith
23.1	Consent of Independent Registered Public Accounting Firm.	Filed herewith
31.1	Certification of Hologic’s CEO pursuant to Item 601(b)(31) of Regulation S-K, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	Filed herewith
31.2	Certification of Hologic’s CFO pursuant to Item 601(b)(31) of Regulation S-K, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	Filed herewith
32.1	Certification of Hologic’s CEO pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.	Furnished herewith
32.2	Certification of Hologic’s CFO pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.	Furnished herewith
101.INS	XBRL Instance Document.	Filed herewith
101.SCH	XBRL Taxonomy Extension Schema Document.	Filed herewith
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.	Filed herewith
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document.	Filed herewith
101.LAB	XBRL Taxonomy Extension Label Linkbase Document.	Filed herewith
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.	Filed herewith

______________

*    Indicates management contract or compensatory plan, contract or arrangement.

‡    Confidential treatment has been granted with respect to certain portions of this exhibit. A complete version of this exhibit

has been filed separately with the U.S. Securities and Exchange Commission.

‡‡    Confidential treatment has been requested with respect to certain portions of this exhibit. A complete version of this

exhibit has been filed separately with the U.S. Securities and Exchange Commission.

(1) List of executive officers to whom provided filed herewith.

77

Item  16. Form 10-K Summary

None.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

HOLOGIC, INC.
By:	/S/    STEPHEN P. MACMILLAN
	Stephen P. MacMillan
	Chairman, President and Chief Executive Officer

Date: November 17, 2016

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Signature	Title	Date
/S/     STEPHEN P. MACMILLAN	Chairman, President and Chief Executive Officer (Principal Executive Officer)	November 17, 2016
STEPHEN P. MACMILLAN
/S/     ROBERT W. MCMAHON	Chief Financial Officer (Principal Financial Officer)	November 17, 2016
ROBERT W. MCMAHON
/S/     KARLEEN M. OBERTON	Corporate Vice President, Finance and Accounting, Chief Accounting Officer (Principal Accounting Officer)	November 17, 2016
KARLEEN M. OBERTON
/S/     ELAINE S. ULLIAN	Lead Independent Director	November 17, 2016
ELAINE S. ULLIAN
/S/     CHRISTOPHER J. COUGHLIN	Director	November 17, 2016
CHRISTOPHER J. COUGHLIN
/S/     SALLY W. CRAWFORD	Director	November 17, 2016
SALLY W. CRAWFORD
/S/     SCOTT T. GARRETT	Director	November 17, 2016
SCOTT T. GARRETT
/S/     NANCY L. LEAMING	Director	November 17, 2016
NANCY L. LEAMING
/S/     LAWRENCE M. LEVY	Director	November 17, 2016
LAWRENCE M. LEVY
/S/     CHRISTIANA STAMOULIS	Director	November 17, 2016
CHRISTIANA STAMOULIS

78

Hologic, Inc.

Consolidated Financial Statements

Years ended September 24, 2016, September 26, 2015 and September 27, 2014

Contents

Report of Independent Registered Public Accounting Firm	F-2
Consolidated Financial Statements
Consolidated Statements of Income	F-3
Consolidated Statements of Comprehensive Income (Loss)	F-4
Consolidated Balance Sheets	F-5
Consolidated Statements of Stockholders’ Equity	F-6
Consolidated Statements of Cash Flows	F-7
Notes to Consolidated Financial Statements	F-8

F-1

Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders of Hologic, Inc.:

We have audited the accompanying consolidated balance sheets of Hologic, Inc. as of September 24, 2016 and September 26, 2015 and the related consolidated statements of income, comprehensive income (loss), stockholders’ equity and cash flows for each of the three years in the period ended September 24, 2016. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of Hologic, Inc. at September 24, 2016 and September 26, 2015, and the consolidated results of its operations and its cash flows for each of the three years in the period ended September 24, 2016, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), Hologic, Inc.’s internal control over financial reporting as of September 24, 2016, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) and our report dated November 17, 2016 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Boston, Massachusetts

November 17, 2016

F-2

Hologic, Inc.

Consolidated Statements of Income

(In millions, except number of shares, which are reflected in thousands, and per share data)

	Years ended
	September 24, 2016			September 26, 2015			September 27, 2014
Revenues:
Product	$	2,379.0		$	2,270.4		$	2,094.9
Service and other	453.7			434.6			435.8
	2,832.7			2,705.0			2,530.7
Costs of revenues:
Product	756.8			755.5			731.3
Amortization of intangible assets	293.4			299.7			314.6
Impairment of intangible assets	—			—			26.6
Service and other	219.2			217.1			212.7
Gross Profit	1,563.3			1,432.7			1,245.5
Operating expenses:
Research and development	232.1			214.9			203.2
Selling and marketing	415.1			363.0			331.7
General and administrative	267.3			261.0			259.8
Amortization of intangible assets	89.7			110.2			113.8
Impairment of intangible assets	—			—			5.6
Restructuring and divestiture charges	10.5			28.5			51.7
	1,014.7			977.6			965.8
Income from operations	548.6			455.1			279.7
Interest income	0.7			1.3			1.3
Interest expense	(155.3		)	(205.5		)	(220.6		)
Debt extinguishment loss	(5.3		)	(62.7		)	(7.4		)
Other income (expense), net	26.6			(11.0		)	(4.9		)
Income before income taxes	415.3			177.2			48.1
Provision for income taxes	84.5			45.6			30.8
Net income	$	330.8		$	131.6		$	17.3
Net income per common share:
Basic	$	1.18		$	0.47		$	0.06
Diluted	$	1.16		$	0.45		$	0.06
Weighted average number of shares outstanding:
Basic	280,213			280,566			275,499
Diluted	286,156			289,537			278,360

See accompanying notes.

F-3

Hologic, Inc.

Consolidated Statements of Comprehensive Income (Loss)

(In millions)

	Years ended
	September 24, 2016			September 26, 2015			September 27, 2014
Net income	$	330.8		$	131.6		$	17.3
Changes in foreign currency translation adjustment	(10.4		)	(11.0		)	(13.3		)
Changes in unrealized holding gains and losses on available-for-sale securities:
Loss recognized in accumulated other comprehensive        income (loss)	(1.1		)	(2.0		)	(3.2		)
Net (gains) losses reclassified from accumulated other        comprehensive income to the statement of income	(6.1		)	—			—
Changes in pension plans, net of taxes of $0.3 in 2016, $0.3 in 2015, and $0.2 in 2014	(0.7		)	(0.2		)	(1.3		)
Changes in value of hedged interest rate caps, net of tax of $2.0 in 2016 and $2.5 in 2015:
Loss recognized in other comprehensive income, net	(3.4		)	(3.9		)	—
Loss reclassified from accumulated other       comprehensive income to the statement of operations,       net	3.9			—			—
Other comprehensive loss	(17.8		)	(17.1		)	(17.8		)
Comprehensive income (loss)	$	313.0		$	114.5		$	(0.5	)

See accompanying notes.

F-4

Hologic, Inc.

Consolidated Balance Sheets

(In millions, except number of shares, which are reflected in thousands, and par value)

	September 24, 2016			September 26, 2015
ASSETS
Current assets:
Cash and cash equivalents	$	548.4		$	491.3
Restricted cash	—			1.4
Accounts receivable, less reserves of $12.7 and $11.1, respectively	447.0			416.1
Inventories	274.7			283.1
Deferred income tax assets	—			19.0
Prepaid income taxes	16.9			21.7
Prepaid expenses and other current assets	39.6			33.2
Total current assets	1,326.6			1,265.8
Property, plant and equipment, net	460.2			457.1
Intangible assets, net	2,643.4			3,023.2
Goodwill	2,803.1			2,808.2
Other assets	83.7			88.2
Total assets	$	7,317.0		$	7,642.5
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Current portion of long-term debt	$	296.0		$	391.2
Accounts payable	156.9			117.0
Accrued expenses	287.6			272.1
Deferred revenue	161.4			163.1
Total current liabilities	901.9			943.4
Long-term debt, net of current portion	3,049.4			3,221.0
Deferred income tax liabilities	982.6			1,178.4
Deferred revenue	15.9			19.6
Other long-term liabilities	224.5			200.9
Commitments and contingencies (Note 10)
Stockholders’ equity:
Preferred stock, $0.01 par value – 1,623 shares authorized; 0shares issued	—			—
Common stock, $0.01 par value – 750,000 shares authorized; 285,015 and 282,495 shares issued, respectively	2.9			2.8
Additional paid-in-capital	5,560.3			5,559.9
Accumulated deficit	(3,138.2		)	(3,469.0		)
Treasury stock, at cost – 7,289 shares at September 24, 2016	(250.0		)	—
Accumulated other comprehensive loss	(32.3		)	(14.5		)
Total stockholders’ equity	2,142.7			2,079.2
Total liabilities and stockholders’ equity	$	7,317.0		$	7,642.5

See accompanying notes.

F-5

Hologic, Inc.

Consolidated Statements of Stockholders' Equity

(In millions, except number of shares, which are reflected in thousands)

	Common Stock				Additional Paid-in- Capital			Accumulated Deficit			Accumulated Other Comprehensive Income			Treasury Stock					Total Stockholders’ Equity
	Number of Shares		Par Value											Number of Shares		Amount
Balance at September 28, 2013	272,036		2.7		5,536.3			(3,616.4		)	20.4			219		(1.5		)	1,941.5
Exercise of stock options	4,697		0.1		70.5			—			—			—		—			70.6
Issuance of common stock to employees upon vesting of restricted stock units, net of shares withheld for employee taxes	846		—		(9.8		)	—			—			—		—			(9.8		)
Issuance of common stock under the employee stock purchase plan	612		—		10.9			—			—			—		—			10.9
Stock-based compensation expense	—		—		49.5			—			—			—		—			49.5
Excess tax benefit from equity awards	—		—		0.8			—			—			—		—			0.8
Net income	—		—		—			17.3			—			—		—			17.3
Foreign currency translation adjustment	—		—		—			—			(13.3		)	—		—			(13.3		)
Adjustment to minimum pension liability, net	—		—		—			—			(1.3		)	—		—			(1.3		)
Retirement of treasury shares	(219	)	—		—			(1.5		)	—			(219	)	1.5			—
Unrealized losses on marketable securities	—		—		—			—			(3.2		)	—		—			(3.2		)
Balance at September 27, 2014	277,972		2.8		5,658.2			(3,600.6		)	2.6			—		—			2,063.0
Exercise of stock options	3,036		—		57.3			—			—			—		—			57.3
Issuance of common stock to employees upon vesting of restricted stock units, net of shares withheld for employee taxes	949		—		(12.9		)	—			—			—		—			(12.9		)
Issuance of common stock under the employee stock purchase plan	538		—		12.0			—			—			—		—			12.0
Stock-based compensation expense	—		—		54.6			—			—			—		—			54.6
Excess tax benefit from equity awards	—		—		7.6			—			—			—		—			7.6
Reacquisition of equity component from convertible notes repurchase, net of taxes	—		—		(216.9		)	—			—			—		—			(216.9		)
Net income	—		—		—			131.6			—			—		—			131.6
Foreign currency translation adjustment	—		—		—			—			(20.6		)	—		—			(20.6		)
Amounts reclassified out of cumulative translation adjustment	—		—		—			—			9.6			—		—			9.6
Adjustment to minimum pension liability, net	—		—		—			—			(0.2		)	—		—			(0.2		)
Unrealized losses on derivatives, net of taxes	—		—		—			—			(3.9		)	—		—			(3.9		)
Other-than-temporary impairment of marketable security reclassified out of accumulated other comprehensive income (loss)	—		—		—			—			7.8			—		—			7.8
Unrealized losses on marketable securities	—		—		—			—			(9.8		)	—		—			(9.8		)
Balance at September 26, 2015	282,495		2.8		5,559.9			(3,469.0		)	(14.5		)	—		—			2,079.2
Exercise of stock options	1,233		0.1		24.0			—			—			—		—			24.1
Issuance of common stock to employees upon vesting of restricted stock units, net of shares withheld for employee taxes	820		—		(16.4		)	—			—			—		—			(16.4		)
Issuance of common stock under the employee stock purchase plan	467		—		14.4			—			—			—		—			14.4
Stock-based compensation expense	—		—		62.3			—			—			—		—			62.3
Excess tax benefit from equity awards	—		—		10.5			—			—			—		—			10.5
Reacquisition of equity component from convertible notes repurchase, net of taxes	—		—		(94.4		)	—			—			—		—			(94.4		)
Net income	—		—		—			330.8			—			—		—			330.8
Foreign currency translation adjustment	—		—		—			—			(10.4		)	—		—			(10.4		)
Adjustment to minimum pension liability, net	—		—		—			—			(0.7		)	—		—			(0.7		)
Repurchase of common stock	—		—		—			—			—			7,289		(250.0		)	(250.0		)
Unrealized losses on derivatives, net of taxes	—		—		—			—			(3.4		)	—		—			(3.4		)
Net unrealized losses on marketable securities	—		—		—			—			(1.1		)	—		—			(1.1		)
Interest cost of interest rate cap reclassified to statement of income	—		—		—			—			3.9			—		—			3.9
Net realized gains on marketable securities reclassified out of accumulated other comprehensive income (loss)	—		—		—			—			(6.1		)	—		—			(6.1		)
Balance at September 24, 2016	285,015		$	2.9	$	5,560.3		$	(3,138.2	)	$	(32.3	)	7,289		$	(250.0	)	$	2,142.7

See accompanying notes.

F-6

Hologic, Inc.

Consolidated Statements of Cash Flows

(In millions)

	Years ended
	September 24, 2016			September 26, 2015			September 27, 2014
OPERATING ACTIVITIES
Net income	$	330.8		$	131.6		$	17.3
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	82.3			81.5			94.7
Amortization	383.1			409.9			428.5
Non-cash interest expense	52.1			63.8			68.7
Stock-based compensation expense	65.4			59.3			50.0
Excess tax benefit related to equity awards	(11.0		)	(10.7		)	(5.7		)
Deferred income taxes	(155.8		)	(148.8		)	(243.1		)
Gain on sale of available-for-sale marketable security	(25.1		)	—			—
Asset impairment charges	—			—			38.4
Debt extinguishment losses	5.3			62.7			7.4
Equity investment impairment charges	1.1			7.8			6.9
Loss on disposal of property and equipment	5.5			6.6			7.1
Loss on sale of businesses	—			9.6			5.5
Other adjustments and non-cash items	(2.9		)	14.3			(11.8		)
Changes in operating assets and liabilities:
Accounts receivable	(31.8		)	(30.3		)	7.9
Inventories	7.6			43.9			(44.7		)
Prepaid income taxes	4.7			0.7			22.4
Prepaid expenses and other assets	(4.9		)	5.7			17.3
Accounts payable	40.1			25.5			11.8
Accrued expenses and other liabilities	45.6			36.9			14.7
Deferred revenue	(4.9		)	16.1			15.1
Net cash provided by operating activities	787.2			786.1			508.4
INVESTING ACTIVITIES
Net proceeds from sale of business	—			—			10.1
Purchase of property and equipment	(47.3		)	(48.1		)	(44.3		)
Increase in equipment under customer usage agreements	(47.2		)	(41.3		)	(35.9		)
Proceeds from sale of available-for-sale marketable security	31.1			—			—
Net (purchases) sales of insurance contracts	(5.2		)	(6.4		)	13.8
Purchases of mutual funds	—			—			(29.7		)
Sales of mutual funds	5.2			10.0			22.4
Purchase of intellectual property	(4.0		)	—			—
Increase in other assets	(1.0		)	(0.3		)	(3.4		)
Net cash used in investing activities	(68.4		)	(86.1		)	(67.0		)
FINANCING ACTIVITIES
Proceeds from long-term debt	—			2,495.1			—
Repayment of long-term debt	(75.0		)	(3,095.0		)	(595.0		)
Payments to extinguish convertible notes	(392.8		)	(543.7		)	—
Proceeds from amounts borrowed under revolving credit line	50.0			358.0			—
Repayment of amounts borrowed under revolving credit line	(225.0		)	(183.0		)	—
Proceeds from accounts receivable securitization agreement	200.0			—			—
Repurchase of common stock	(250.0		)	—			—
Payment of debt issuance costs	—			(22.7		)	(2.4		)
Purchase of interest rate caps	—			(13.2		)	—
Payment of deferred acquisition consideration	—			—			(5.0		)
Net proceeds from issuance of common stock pursuant to employee stock plans	38.5			70.0			81.4
Excess tax benefit related to equity awards	11.0			10.7			5.7
Payment of minimum tax withholdings on net share settlements of equity awards	(16.4		)	(12.9		)	(9.8		)
Net cash used in financing activities	(659.7		)	(936.7		)	(525.1		)
Effect of exchange rate changes on cash and cash equivalents	(2.0		)	(8.1		)	(2.7		)
Net increase (decrease) in cash and cash equivalents	57.1			(244.8		)	(86.4		)
Cash and cash equivalents, beginning of period	491.3			736.1			822.5
Cash and cash equivalents, end of period	$	548.4		$	491.3		$	736.1

See accompanying notes.

F-7

Hologic, Inc.

Notes to Consolidated Financial Statements

(all tabular amounts in millions, except number of shares which are reflected in thousands)

1. Operations

Hologic, Inc. (the “Company” or “Hologic”) develops, manufactures and supplies premium diagnostics products, medical imaging systems and surgical products with an emphasis on women's health. The Company operates in four segments: Diagnostics, Breast Health, GYN Surgical and Skeletal Health.

2. Summary of Significant Accounting Policies

Principles of Consolidation

The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. The Company’s fiscal year ends on the last Saturday in September. Fiscal 2016, 2015 and 2014 ended on September 24, 2016, September 26, 2015 and September 27, 2014, respectively.

Management’s Estimates and Uncertainties

The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("GAAP") requires management to make significant estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Significant estimates and assumptions by management affect the Company’s revenue recognition for multiple element arrangements, allowance for doubtful accounts, the net realizable value of inventory, estimated fair value of cost-method equity investments, valuations, purchase price allocations and contingent consideration related to business combinations, expected future cash flows including growth rates, discount rates, terminal values and other assumptions and estimates used to evaluate the recoverability of long-lived assets and goodwill, estimated fair values of intangible assets and goodwill, amortization methods and periods, warranty reserves, certain accrued expenses, restructuring and other related charges, stock-based compensation, contingent liabilities, tax reserves, deferred tax rates and recoverability of the Company’s net deferred tax assets and related valuation allowances.

Although the Company regularly assesses these estimates, actual results could differ materially from these estimates. Changes in estimates are recorded in the period in which they become known. The Company bases its estimates on historical experience and various other assumptions that it believes to be reasonable under the circumstances.

The Company is subject to a number of risks similar to those of other companies of similar size in its industry, including dependence on third-party reimbursements to support the markets of the Company’s products, early stage of development of certain products, rapid technological changes, recoverability of long-lived assets (including intangible assets and goodwill), competition, stability of world financial markets, ability to obtain regulatory approvals, changes in the regulatory environment, limited number of suppliers, customer concentration, integration of acquisitions, substantial indebtedness, government regulations, management of international activities, protection of proprietary rights, patent and other litigation, dependence on contract manufacturers and dependence on key individuals.

Cash Equivalents

Cash equivalents are highly liquid investments with insignificant interest rate risk and maturities of three months or less at the time of acquisition.

Marketable Securities

The Company’s marketable securities as of September 24, 2016 are comprised of solely of equity securities and as of September 26, 2015 also included mutual funds. The equity securities are investments in the common stock of publicly traded companies, and the mutual funds were used to fund a portion of the Company's deferred compensation plan. The equity securities are classified as available-for-sale and are recorded at fair value with the unrealized gains or losses, net of tax, within accumulated other comprehensive income (loss), which is a component of stockholders’ equity. The mutual funds were classified as trading and recorded at fair value with unrealized gains and losses recorded in other income (expense), net in the Consolidated Statements of Income.

F-8

The Company periodically reviews its marketable equity securities classified as available-for-sale for other-than-temporary declines in fair value below carrying value, or whenever events or circumstances indicate that the carrying amount of an asset may not be recoverable. The determination that a decline is other-than-temporary is, in part, subjective and influenced by many factors. When assessing marketable equity securities for other-than-temporary declines in fair value, the Company considers factors including: the significance of the decline in value compared to the carrying value; the underlying factors contributing to a decline in the price of the security; how long the market value of the investment has been less than its carrying value; any market conditions that impact liquidity; the views of external investment analysts; the financial condition and near-term prospects of the investee; any news or financial information that has been released specific to the investee; and the outlook for the overall industry in which the investee operates. In the fourth quarters of fiscal 2016 and 2015, the Company concluded that the decline in fair value of one of its marketable securities was other-than-temporary based on the length of time the security's market value was significantly below its carrying value and recorded impairment charges of $1.1 million and $7.8 million, respectively.

The following reconciles cost basis to fair market value.

	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Other Than Temporary Impairment			Fair Value
As of September 24, 2016	$	2.4	$	—	$	(0.3	)	$	(1.1	)	$	1.0
As of September 26, 2015	$	16.1	$	7.2	$	(0.3	)	$	(7.8	)	$	15.2
As of September 27, 2014	$	15.5	$	10.2	$	(1.3	)	$	—		$	24.4

In the first quarter of fiscal 2016, the Company sold all of its shares in one of its marketable securities and recorded a realized gain of $25.1 million in Other income (expense), net.

Concentrations of Credit Risk

Financial instruments that subject the Company to credit risk primarily consist of cash and cash equivalents, cost-method equity investments, and trade accounts receivable. The Company invests its cash and cash equivalents with high credit quality financial institutions.

The Company’s customers are principally located in the United States, Europe and Asia. The Company performs ongoing credit evaluations of the financial condition of its customers and generally does not require collateral. Although the Company is directly affected by the overall financial condition of the healthcare industry, as well as global economic conditions, management does not believe significant credit risk exists as of September 24, 2016. The Company generally has not experienced any material losses related to receivables from individual customers or groups of customers in the healthcare industry. The Company maintains an allowance for doubtful accounts based on accounts past due and historical collection experience.

There were no customers with balances greater than 10% of accounts receivable as of September 24, 2016 and September 26, 2015, or any customers that represented greater than 10% of consolidated revenues for fiscal years 2016, 2015 and 2014 (see Note 13).

Supplemental Cash Flow Statement Information

	Years ended
	September 24, 2016		September 26, 2015		September 27, 2014
Cash paid during the period for income taxes	$	184.8	$	168.7	$	231.8
Cash paid during the period for interest	$	104.0	$	143.0	$	155.7

F-9

Inventories

Inventories are valued at the lower of cost or market on a first in, first out basis. Work-in-process and finished goods inventories consist of materials, labor and manufacturing overhead. The valuation of inventory requires management to estimate excess and obsolete inventory. The Company employs a variety of methodologies to determine the net realizable value of its inventory. Provisions for excess and obsolete inventory are primarily based on management’s estimates of forecasted sales, usage levels and expiration dates, as applicable for disposable products. A significant change in the timing or level of demand for the Company’s products compared to forecasted amounts may result in recording additional charges for excess and obsolete inventory in the future. The Company records charges for excess and obsolete inventory within cost of product revenues.

Inventories consisted of the following:

	September 24, 2016		September 26, 2015
Raw materials	$	96.4	$	98.3
Work-in-process	51.7		58.7
Finished goods	126.6		126.1
	$	274.7	$	283.1

Property, Plant and Equipment

Property, plant and equipment is recorded at cost less allowances for depreciation. The straight-line method of depreciation is used for all property and equipment.

Property, plant and equipment consisted of the following:

	September 24, 2016			September 26, 2015
Equipment and software	$	381.9		$	365.9
Equipment under customer usage agreements	334.6			305.7
Buildings and improvements	186.1			182.1
Leasehold improvements	65.6			59.2
Land	51.9			51.4
Furniture and fixtures	18.4			17.3
	1,038.5			981.6
Less - accumulated depreciation and amortization	(578.3		)	(524.5		)
	$	460.2		$	457.1

Property, plant and equipment are depreciated over the following estimated useful lives:

Asset Classification	Estimated Useful Life
Building and improvements	35–40 years
Equipment and software	3–10 years
Equipment under customer usage agreements	3–8 years
Furniture and fixtures	5–7 years
Leasehold improvements	Shorter of the Original Term of Lease or Estimated Useful Life

Equipment under customer usage agreements primarily consists of diagnostic instrumentation and imaging equipment located at customer sites but owned by the Company. Generally, the customer has the right to use the equipment for a period of time provided they meet certain agreed to conditions. The Company recovers the cost of providing the equipment from the sale of disposables. The depreciation costs associated with equipment under customer usage agreements are charged to cost of product revenues over the estimated useful life of the equipment. The costs to maintain the equipment in the field are charged to cost of product revenue as incurred.

F-10

Long-Lived Assets

The Company reviews its long-lived assets, which includes property, plant and equipment and identifiable intangible assets (see below for discussion of intangible assets), for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable in accordance with ASC 360-10-35-15, Property, Plant and Equipment—Impairment or Disposal of Long-Lived Assets (ASC 360). Recoverability of these assets is evaluated by comparing the carrying value of the assets to the undiscounted cash flows estimated to be generated by those assets over their remaining economic life. If the undiscounted cash flows are not sufficient to recover the carrying value of the assets, the assets are considered impaired. The impairment loss is measured by comparing the fair value of the assets to their carrying value. Fair value is determined by either a quoted market price, if any, or a value determined by a discounted cash flow technique.

In the second quarter of fiscal 2014, the Company evaluated its MRI breast coils product line asset group, which was within its Breast Health segment, for impairment due to the Company’s expectation that it would be sold or disposed of significantly before the end of its previously estimated useful life. At this time, the undiscounted cash flows expected to be generated by this asset group over its estimated remaining useful life were not sufficient to recover its carrying value. The Company estimated the fair value of the asset group using market participant assumptions, which were based on underlying cash flow estimates, resulting in an impairment charge of $28.6 million. Pursuant to ASC 360 subtopic 10-35-28, the impairment charge was allocated to the long-lived assets with $27.1 million to intangible assets and $1.5 million to property and equipment. The property and equipment charge was recorded to cost of product revenues and general and administrative expenses in the amounts of $0.3 million and $1.2 million, respectively. The Company believes this adjustment falls within Level 3 of the fair value hierarchy. The Company completed the sale of this product line in the fourth quarter of fiscal 2014 (see Note 3).

In the first quarter of fiscal 2014, the Company recorded a $3.1 million impairment charge to record certain of its buildings at fair value related to the shutdown of its Hitec Imaging organic photoconductor manufacturing line (see Note 3).

Business Combinations and Acquisition of Intangible Assets

The Company records tangible and intangible assets acquired in business combinations under the purchase method of accounting. The Company accounts for acquisitions in accordance with ASC 805, Business Combinations (ASC 805). Amounts paid for each acquisition are allocated to the assets acquired and liabilities assumed based on their fair values at the dates of acquisition. The Company allocates the purchase price in excess of the fair value of the net tangible assets acquired to identifiable intangible assets, including purchased research and development, based on detailed valuations that use certain information and assumptions provided by management. The Company allocates any excess purchase price over the fair value of the net tangible and intangible assets acquired to goodwill. The use of alternative valuation assumptions, including estimated cash flows and discount rates, and alternative useful life assumptions could result in different purchase price allocations and intangible asset amortization expense in current and future periods.

The Company uses the income approach to determine the fair value of developed technology and in-process research and development ("IPR&D") acquired in a business combination. This approach determines fair value by estimating the after-tax cash flows attributable to the respective asset over its useful life and then discounting these after-tax cash flows back to a present value. The Company bases its revenue assumptions on estimates of relevant market sizes, expected market growth rates, expected trends in technology and expected product introductions by competitors. Developed technology represents patented and unpatented technology and know-how. Regarding the value of the in-process projects, the Company considers, among other factors, the in-process projects’ stage of completion, the complexity of the work completed as of the acquisition date, the projected costs to complete, the contribution of core technologies and other acquired assets, the expected introduction date and the estimated useful life of the technology. The Company believes that the estimated developed technology and IPR&D amounts represent the fair value at the date of acquisition and do not exceed the amount a third-party would pay for the assets.

The Company also uses the income approach, as described above, to determine the estimated fair value of certain other identifiable intangible assets including customer relationships, trade names and business licenses. Customer relationships represent established relationships with customers, which provide a ready channel for the sale of additional products and services. Trade names represent acquired company and product names.

F-11

Intangible Assets and Goodwill

Intangible Assets

Intangible assets are initially recorded at fair value and stated net of accumulated amortization and impairments. The Company amortizes its intangible assets that have finite lives using either the straight-line method, or if reliably determinable, based on the pattern in which the economic benefit of the asset is expected to be utilized. Amortization is recorded over the estimated useful lives ranging from 2 to 30 years. The Company evaluates the realizability of its definite lived intangible assets whenever events or changes in circumstances or business conditions indicate that the carrying value of these assets may not be recoverable based on expectations of future undiscounted cash flows for each asset group. If the carrying value of an asset or asset group exceeds its undiscounted cash flows, the Company estimates the fair value of the assets, generally utilizing a discounted cash flow analysis based on the present value of estimated future cash flows to be generated by the assets using a risk-adjusted discount rate. To estimate the fair value of the assets, the Company uses market participant assumptions pursuant to ASC 820, Fair Value Measurements.

Indefinite lived intangible assets, such as IPR&D assets, are required to be tested for impairment annually, or more frequently if indicators of impairment are present. The Company’s annual impairment test date is as of the first day of its fourth quarter.

During the fourth quarter of fiscal 2014, the Company recorded impairment charges of $5.1 million for a reduction in fair value of its remaining IPR&D assets. The reduction in fair value was primarily due to lower revenue projections of the respective products compared to those estimated at the time of the Gen-Probe acquisition.

During the second quarter of fiscal 2014, the Company recorded impairment charges of $26.6 million and $0.5 million to developed technology and trade names, respectively, related to its MRI breast coils product line discussed above. In addition, the Company periodically re-evaluates the lives of its definite-lived intangible assets, and in the second quarter of fiscal 2014 shortened the life of certain corporate trade names, which were phased out.

Intangible assets consisted of the following:

	September 24, 2016				September 26, 2015
Description	Gross Carrying Value		Accumulated Amortization		Gross Carrying Value		Accumulated Amortization
Developed technology	$	3,983.7	$	1,991.6	$	3,979.1	$	1,698.5
In-process research and development	3.7		—		3.7		—
Customer relationships and contracts	1,098.9		546.2		1,101.1		467.5
Trade names	236.2		141.6		236.4		131.5
Business licenses	2.4		2.1		2.5		2.1
	$	5,324.9	$	2,681.5	$	5,322.8	$	2,299.6

In the third quarter of fiscal 2016, the Company accelerated the amortization of the Cystic Fibrosis developed technology asset of $6.2 million as a result of discontinuing this product line.

In the second quarter of fiscal 2016, the Company acquired certain intellectual property for $4.8 million, which was recorded in developed technology.

Amortization expense related to developed technology is classified as a component of cost of product revenues—amortization of intangible assets. Amortization expense related to customer relationships and contracts, trade names, and business licenses is classified as a component of amortization of intangible assets within operating expenses.

The estimated amortization expense at September 24, 2016 for each of the five succeeding fiscal years was as follows:

Fiscal 2017	$	365.8
Fiscal 2018	$	355.0
Fiscal 2019	$	343.1
Fiscal 2020	$	331.4
Fiscal 2021	$	312.0

F-12

Goodwill

In accordance with ASC 350, Intangibles—Goodwill and Other (ASC 350), the Company tests goodwill for impairment at the reporting unit level on an annual basis and between annual tests if events and circumstances indicate it is more likely than not that the fair value of a reporting unit is less than its carrying value. Events that could indicate impairment and trigger an interim impairment assessment include, but are not limited to, current economic and market conditions, including a decline in market capitalization, a significant adverse change in legal factors, business climate, operational performance of the business or key personnel, and an adverse action or assessment by a regulator.

In performing the impairment test, the Company utilizes the two-step approach prescribed under ASC 350. The first step requires a comparison of the carrying value of each reporting unit to its estimated fair value. To estimate the fair value of its reporting units for Step 1, the Company primarily utilizes the income approach. The income approach is based on a DCF analysis and calculates the fair value by estimating the after-tax cash flows attributable to a reporting unit and then discounting the after-tax cash flows to a present value using a risk-adjusted discount rate. Assumptions used in the DCF require significant judgment, including judgment about appropriate discount rates and terminal values, growth rates, and the amount and timing of expected future cash flows. The forecasted cash flows are based on the Company’s most recent budget and strategic plan and for years beyond this period, the Company’s estimates are based on assumed growth rates expected as of the measurement date. The Company believes its assumptions are consistent with the plans and estimates used to manage the underlying businesses. The discount rates used are intended to reflect the risks inherent in future cash flow projections and are based on estimates of the weighted-average cost of capital (“WACC”) of market participants relative to each respective reporting unit. The market approach considers comparable market data based on multiples of revenue or earnings before interest, taxes, depreciation and amortization (“EBITDA”) and is primarily used as a corroborative analysis to the results of the DCF analysis. The Company believes its assumptions used to determine the fair value of its reporting units are reasonable. If different assumptions were used, particularly with respect to forecasted cash flows, terminal values, WACCs, or market multiples, different estimates of fair value may result and there could be the potential that an impairment charge could result. Actual operating results and the related cash flows of the reporting units could differ from the estimated operating results and related cash flows.

If the carrying value of a reporting unit exceeds its estimated fair value, the Company is required to perform the second step of the goodwill impairment test to measure the amount of impairment loss, if any. The second step of the goodwill impairment test compares the implied fair value of a reporting unit’s goodwill to its carrying value. The implied fair value of goodwill is derived by performing a hypothetical purchase price allocation for each reporting unit as of the measurement date and allocating the reporting unit’s estimated fair value to its assets and liabilities. The residual amount from performing this allocation represents the implied fair value of goodwill. To the extent this amount is below the carrying value of goodwill, an impairment charge is recorded.

The Company conducted its fiscal 2016 impairment test on the first day of the fourth quarter, and as noted above used DCF and market approaches to estimate the fair value of its reporting units as of June 26, 2016, and ultimately used the fair value determined by the DCF approach in making its impairment test conclusions. The Company believes it used reasonable estimates and assumptions about future revenue, cost projections, cash flows, market multiples and discount rates as of the measurement date. As a result of completing Step 1, all of the Company's reporting units had fair values exceeding their carrying values, and as such, Step 2 of the impairment test was not required. For illustrative purposes, had the fair value of each of the reporting units that passed Step 1 been lower than 10%, all of the reporting units would still have passed Step 1 of the goodwill impairment test.

At September 24, 2016, the Company believes that each reporting unit, with goodwill aggregating $2.80 billion, was not at risk of failing Step 1 of the goodwill impairment test based on the current forecasts.

The Company conducted its fiscal 2015 and 2014 impairment tests on the first day of the respective year's fourth quarter, and as noted above used DCF and market approaches to estimate the fair value of its reporting units as of June 28, 2015 and June 29, 2014, respectively, and ultimately used the fair value determined by the DCF approach in making its impairment test conclusions. The Company believes it used reasonable estimates and assumptions about future revenue, cost projections, cash flows, market multiples and discount rates as of the measurement date. As a result of completing Step 1, all of the Company's reporting units had fair values exceeding their carrying values, and as such, Step 2 of the impairment test was not required.

F-13

A rollforward of goodwill activity by reportable segment from September 26, 2015 to September 24, 2016 is as follows:

	Diagnostics			Breast Health		GYN Surgical			Skeletal Health		Total
Balance at September 26, 2015	$	1,152.3		$	631.8	$	1,016.0		$	8.1	$	2,808.2
Tax adjustments	(1.3		)	—		—			—		(1.3		)
Foreign currency and other	(2.8		)	—		(1.0		)	—		(3.8		)
Balance at September 24, 2016	$	1,148.2		$	631.8	$	1,015.0		$	8.1	$	2,803.1

Other Assets

Other assets consisted of the following:

	September 24, 2016		September 26, 2015
Other Assets
Life insurance contracts	$	36.0	$	27.5
Manufacturing access fees	9.6		11.6
Derivative assets	0.4		6.2
Mutual funds	—		5.6
Marketable securities	1.0		15.2
Cost-method equity investments	3.5		4.2
Deferred tax assets	9.3		—
Other	23.9		17.9
	$	83.7	$	88.2

Life insurance contracts were purchased in connection with the Company’s Nonqualified Deferred Compensation Plan (“DCP”) and are recorded at their cash surrender value (see Note 9 for further discussion). The manufacturing access fees are related to a manufacturing supply and purchase agreement for our Aptima HPV products and are being amortized over the term of the agreement.

The Company’s cost-method equity investments are carried at cost as the Company owns less than 20% of the voting equity and does not have the ability to exercise significant influence over these companies. The Company regularly evaluates the carrying value of its cost-method equity investments for impairment and whether any events or circumstances are identified that would significantly harm the fair value of the investment. The primary indicators the Company utilizes to identify these events and circumstances are the investee’s ability to remain in business, such as the investee’s liquidity and rate of cash use, and the investee’s ability to secure additional funding and the investee valuation as determined by that additional funding. In the event a decline in fair value is judged to be other-than-temporary, the Company will record an other-than-temporary impairment charge in other income (expense), net in the Consolidated Statements of Operations. During fiscal 2014, the Company recorded other-than-temporary impairment charges of $6.9 million related to certain of its cost-method equity investments to adjust their carrying amounts to fair value. No such charges were recorded in fiscal 2016 or 2015 for cost-method equity investments.

Research and Software Development Costs

Costs incurred for the research and development of the Company’s products are expensed as incurred. Nonrefundable advance payments for goods or services to be received in the future by the Company for use in research and development activities are deferred. The deferred costs are expensed as the related goods are delivered or the services are performed.

The Company accounts for the development costs of software embedded in the Company’s products in accordance with ASC 985, Software. Costs incurred in the research, design and development of software embedded in products to be sold to customers are charged to expense until technological feasibility of the ultimate product to be sold is established. The Company’s policy is that technological feasibility is achieved when a working model, with the key features and functions of the product, is available for customer testing. Software development costs incurred after the establishment of technological feasibility and until the product is available for general release are capitalized, provided recoverability is reasonably assured. Software development costs eligible for capitalization have not been significant to date.

F-14

Foreign Currency Translation

The financial statements of the Company’s foreign subsidiaries are translated in accordance with ASC 830, Foreign Currency Matters. The reporting currency for the Company is the U.S. dollar. The functional currency of the Company’s foreign subsidiaries is determined based on the guidance in ASC 830. The majority of the Company's foreign subsidiaries' functional currency is the applicable local currency, although certain of the Company's foreign subsidiaries' functional currency is the U.S. dollar based on the nature of their operations or functions. Assets and liabilities of subsidiaries whose functional currency is the local currency are translated at the exchange rate in effect at each balance sheet date. Before translation, the Company re-measures foreign currency denominated assets and liabilities, including inter-company accounts receivable and payable, into the functional currency of the respective entity, resulting in unrealized gains or losses recorded in other income (expense), net in the Consolidated Statements of Income. Revenues and expenses are translated using average exchange rates during the respective period. Foreign currency translation adjustments are accumulated as a component of other comprehensive income (loss) as a separate component of stockholders’ equity. Gains and losses arising from transactions denominated in foreign currencies are included in other income (expense), net in the Consolidated Statements of Income and were not significant in any of the reporting periods presented.

Accumulated Other Comprehensive Income (Loss)

Other comprehensive income (loss) includes certain transactions that have generally been reported in the statement of stockholders’ equity. The following tables summarize the components and changes in accumulated balances of other comprehensive income for the periods presented:

	Year Ended September 24, 2016															Year Ended September 26, 2015
	Foreign Currency Translation			Marketable Securities			Pension Plans			Hedged Interest Rate Caps			Total			Foreign Currency Translation			Marketable Securities			Pension Plans			Hedged Interest Rate Caps			Total
Beginning Balance	$	(15.7	)	$	6.9		$	(1.8	)	$	(3.9	)	$	(14.5	)	$	(4.7	)	$	8.9		$	(1.6	)	$	—		$	2.6
Other comprehensive loss before reclassifications	(10.4		)	(1.1		)	(0.7		)	(3.4		)	(15.6		)	(20.6		)	(9.8		)	(0.2		)	(3.9		)	(34.5		)
(Gains) charges reclassified to statement of income	—			(6.1		)	—			3.9			(2.2		)	9.6			7.8			—			—			17.4
Ending Balance	$	(26.1	)	$	(0.3	)	$	(2.5	)	$	(3.4	)	$	(32.3	)	$	(15.7	)	$	6.9		$	(1.8	)	$	(3.9	)	$	(14.5	)

In the first quarter of fiscal 2016, the Company sold all of its shares in one of its marketable securities and recorded a realized gain of $25.1 million in other income (expense), net and resulted in reclassifying a $7.2 million gain out of other comprehensive income (loss) to other income (expense), net. In the fourth quarter of fiscal 2016, the Company recorded a $1.1 million other-than-temporary impairment charge and this amount was reclassified out of other comprehensive income (loss) to other income (expense), net.

During fiscal 2015, the Company reclassified $9.6 million out of accumulated other comprehensive income to restructuring and divestiture charges related to writing off the cumulative translation adjustment in connection with its substantial liquidation of the MRI breast coils product line (see Note 3). In addition, during fiscal 2015 the Company reclassified $7.8 million out of accumulated other comprehensive income to other (expense) income, net for the other-than-temporary impairment of a marketable security.

Derivatives

Interest Rate Cap - Cash Flow Hedge

The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company manages its exposure to some of its interest rate risk through the use of interest rate caps, which are derivative financial instruments. The Company does not use derivatives for speculative purposes. For a derivative that is designated as a cash flow hedge, changes in the fair value of the derivative are recognized in accumulated other comprehensive income ("AOCI") to the extent the derivative is effective at offsetting the changes in the cash flows being hedged until the hedged item affects earnings. To the extent there is any hedge ineffectiveness, changes in fair value relating to the ineffective portion are immediately recognized in earnings in other income (expense) in the Consolidated Statements of Income.

F-15

During fiscal 2015, the Company entered into separate interest rate cap agreements with multiple counter-parties to help mitigate the interest rate volatility associated with the variable rate interest on its credit facilities under its Prior Credit Agreement, which has been replaced by the new Credit Agreement (see Note 4). Interest rate cap agreements provide the right to receive cash if the reference interest rate rises above a contractual rate. The aggregate premium paid for the interest rate cap agreements was $13.2 million, which was the initial fair value of the instruments recorded in the Company's financial statements.

The critical terms of the interest rate caps were designed to mirror the terms of the Company’s LIBOR-based borrowings under the Prior Credit Agreement. The terms in the new Credit Agreement are consistent with the Prior Credit Agreement, and therefore the interest rate caps continue to be highly effective at offsetting the cash flows being hedged. The Company designated these derivatives as cash flow hedges of the variability of the LIBOR-based interest payments on $1.0 billion of principal over a three-year period, which ends on December 30, 2017.

As of September 24, 2016, the Company determined that the existence of hedge ineffectiveness, if any, was immaterial and all changes in the fair value of the interest rate caps were recorded in the Consolidated Statements of Comprehensive Income as a component of AOCI.

During fiscal 2016, $3.9 million was reclassified from AOCI to the Company's Consolidated Statements of Income related to the interest rate cap agreements. The Company expects to similarly reclassify approximately $6.9 million from AOCI to the Consolidated Statements of Income in the next twelve months.

The aggregate fair value of these interest rate caps was $1.4 million and $6.9 million at September 24, 2016 and September 26, 2015, respectively, and is included in both Prepaid expenses and other current assets and Other assets on the Company’s Consolidated Balance Sheet. Refer to Note 5 “Fair Value Measurements” below for related fair value disclosures.

Forward Foreign Currency Contracts

The Company enters into forward foreign currency exchange contracts to mitigate certain operational exposures from the impact of changes in foreign currency exchange rates. Such exposures result from the portion of the Company's operations that are denominated in currencies other than the U.S. dollar, primarily the Euro, the UK Pound, the Australian dollar, the Canadian dollar and the Japanese Yen. These foreign currency exchange contracts are entered into to support transactions made in the ordinary course of business and are not speculative in nature. The contracts are generally for periods of one year or less. During fiscal 2016, the Company began to execute forward foreign currency contracts in order to mitigate its exposure to fluctuations in various currencies against its reporting currency, the U.S. dollar. The Company did not elect hedge accounting for these forward foreign currency contracts; however, the Company may seek to apply hedge accounting in future scenarios. The change in the fair value of these contracts is recognized directly in earnings as a component of other income (expense), net. During fiscal 2016, the Company recorded a realized gain of $1.5 million from settling forward foreign currency contracts, and net unrealized losses of $1.1 million on outstanding contracts.

As of September 24, 2016, the Company had outstanding forward foreign currency contracts that were not designated for hedge accounting and are used to hedge fluctuations in the U.S dollar of forecasted transactions denominated in the Euro, UK Pound, Australian Dollar, Canadian Dollar and Japanese Yen with a notional amount of $165.0 million.

Financial Instrument Presentation

The table below presents the fair value of the Company's derivative financial instruments as well as their classification on the balance sheet as of September 24, 2016:

F-16

	Balance Sheet Location	September 24, 2016		September 26, 2015
Assets:
Derivative instruments designated as a cash flow hedge:
Interest rate cap agreements	Prepaid expenses and other current assets	$	1.0	$	0.7
Interest rate cap agreements	Other Assets	0.4		6.2
		$	1.4	$	6.9
Derivatives not designated as hedging instruments:
Forward foreign currency contracts	Prepaid expenses and other current assets	$	0.2	$	—
Liabilities:
Derivatives not designated as hedging instruments:
Forward foreign currency contracts	Accrued expenses	$	1.3	$	—

The following table presents the unrealized loss recognized in AOCI related to the interest rate caps for the following reporting periods:

	Year Ended September 24, 2016			Year Ended September 26, 2015
Amount of loss recognized in other comprehensive income, net of taxes:
Interest rate cap agreements	$	(3.4	)	$	(3.9	)

The following table presents the adjustment to fair value (realized and unrealized) recorded within the Consolidated Statements of Income for derivative instruments for which the Company did not elect hedge accounting:

Derivatives not classified as hedging instruments			Location of Gain (Loss) Recognized in Income
	Year Ended September 24, 2016
Forward foreign currency contracts	$	0.4	Other income (expense), net

Revenue Recognition

The Company generates revenue from the sale of its products, primarily medical imaging systems and diagnostic and surgical disposable products, and related services, which are primarily support and maintenance services on its medical imaging systems.

The Company recognizes product revenue upon shipment provided that there is persuasive evidence of an arrangement, there are no uncertainties regarding acceptance, the sales price is fixed or determinable, and collection of the resulting receivable is reasonably assured. Generally, the Company’s product arrangements for capital equipment sales, primarily in its Breast Health and Skeletal Health reporting segments, are multiple-element arrangements, including services, such as installation, training and support and maintenance, and multiple products. Based on the terms and conditions of the product arrangements, the Company believes that these services and undelivered products can be accounted for separately from the delivered product element as the Company’s delivered products have value to its customers on a stand-alone basis. Accordingly, revenue for services not yet performed at the time of product delivery are deferred and recognized as such services are performed. The relative selling price of any undelivered products is also deferred at the time of shipment and recognized as revenue when these products are delivered. There is no customer right of return in the Company’s sales agreements for its capital equipment.

Service revenues primarily consist of amounts recorded under service and maintenance contracts and repairs not covered under warranty, installation and training, and shipping and handling costs billed to customers. Service and maintenance contract

F-17

revenues are recognized ratably over the term of the contract. Other service revenues are recognized as the services are performed.

For revenue arrangements with multiple deliverables, the Company records revenue as separate units of accounting if the delivered items have value to the customer on a stand-alone basis, and if the arrangement includes a general right of return relative to the delivered items, the delivery or performance of the undelivered items is considered probable and substantially within the Company’s control. Some of the Company’s products have both software and non-software components that function together to deliver the product’s essential functionality. The Company determined that except for its computer-aided detection (“CAD”) products and C-View product, the software element in its other products is incidental and not within the scope of the software revenue recognition rules, ASC 985-605, Software—Revenue Recognition. The Company determined that given the significance of the software component’s functionality to its CAD and C-View systems, which are sold by its Breast Health segment, these products are within the scope of the software revenue recognition rules. The Company evaluated the appropriate revenue recognition treatment of its other hardware products, including its Dimensions digital mammography systems, which have both software and non-software components that function together to deliver the products’ essential functionality (i.e., it is a tangible product), and determined they are not within the scope of ASC 985-605.

The Company is required to allocate revenue to its multiple element arrangements based on the relative fair value of each element’s selling price. The Company typically determines the selling price of its products based on its best estimate of selling prices (“ESP”) and services based on vendor-specific objective evidence of selling price (“VSOE”). The Company determines VSOE based on its normal pricing and discounting practices for the specific product or service when sold on a stand-alone basis. In determining VSOE, the Company’s policy requires a substantial majority of selling prices for a product or service to be within a reasonably narrow range. The Company also considers the class of customer, method of distribution, and the geographies into which its products and services are sold when determining VSOE. If VSOE cannot be established, which may occur in instances when a product or service has not been sold separately, stand-alone sales are too infrequent, or product pricing is not within a relatively narrow range, the Company will generally establish the selling price using ESP to allocate arrangement consideration. The objective of ESP is to determine the price at which the Company would typically transact a stand-alone sale of the product or service. ESP is determined by considering a number of factors including Company pricing policies, internal costs and gross margin objectives, method of distribution, information gathered from experience in customer negotiations, market research and information, recent technological trends, competitive landscape and geographies.

For those arrangements accounted for under the software revenue recognition rules, ASC 985-605 generally requires revenue earned on software arrangements involving multiple elements to be allocated to each element based on their relative VSOE of fair value. If VSOE does not exist for a delivered element, the residual method is applied in which the arrangement consideration is allocated to the undelivered elements based on their VSOE with the remaining consideration recognized as revenue for the delivered elements. For multiple-element software arrangements where VSOE of fair value of Post-Contract Customer Support (“PCS”) has been established, the Company recognizes revenue using the residual method at the time all other revenue recognition criteria have been met.

Within its Diagnostics segment, the Company manufactures blood screening products according to demand schedules provided by its collaboration partner, Grifols, S.A. (“Grifols”). The Company’s agreement provides that it shares a portion of Grifols’s revenue from screening blood donations. Upon shipment to Grifols, the Company recognizes product revenue at an agreed upon fixed transfer price, which is not refundable, and records the related cost of products sold. Based on the terms of the Company’s collaboration agreement with Grifols, the Company’s ultimate share of the net revenue from sales to the end user in excess of the transfer price is not known until it is reported to the Company by Grifols. On a monthly basis, Grifols reports net revenue generated during the prior month and remits an additional corresponding net payment to the Company, which is recorded as revenue at that time. This payment combined with the transfer price revenues previously recognized represents the Company’s ultimate share of net revenue under the agreement.

While the majority of its instruments are placed at customer sites, in certain instances the Company sells instruments to its clinical diagnostics customers and records sales of these instruments upon shipment or delivery, depending on the terms of the arrangement.

Within its Diagnostics business, and to a lesser extent, its GYN Surgical business, the Company provides its instrumentation (for example, the ThinPrep Processor, ThinPrep Imaging System, and the Panther and Tigris systems) and certain other hardware to customers without requiring them to purchase the equipment or enter into a lease. The Company installs the instrumentation or equipment at the customer’s site and recovers the cost of providing the instrumentation or equipment in the amount it charges for its diagnostic tests, assays and other disposables. Customers enter into a customer usage agreement and typically commit to purchasing minimum quantities of disposable products at a stated price over a defined contract term, which is typically between three and five years. Revenue is recognized over the term of the customer usage agreement as tests, assays and other disposable products are shipped or delivered, depending on the customer's arrangement.

F-18

Accounts Receivable and Reserves

The Company records reserves for doubtful accounts based upon a specific review of all outstanding invoices, known collection issues and historical experience. The Company regularly evaluates the collectability of its trade accounts receivables and performs ongoing credit evaluations of its customers and adjusts credit limits based upon payment history and its assessment of the customer’s current credit worthiness.

Accounts receivable reserve activity for fiscal 2016, 2015 and 2014 was as follows:

	Balance at Beginning of Period		Charged to Costs and Expenses		Write- offs and Payments			Balance at End of Period
Period Ended:
September 24, 2016	$	11.1	$	2.0	$	(0.4	)	$	12.7
September 26, 2015	$	12.0	$	1.6	$	(2.5	)	$	11.1
September 27, 2014	$	8.8	$	4.4	$	(1.2	)	$	12.0

Cost of Service and Other Revenues

Cost of service and other revenues primarily represents payroll and related costs associated with the Company’s professional services’ employees, consultants, infrastructure costs and overhead allocations, including depreciation, rent and materials consumed in providing the service.

Stock-Based Compensation

The Company accounts for share-based payments in accordance with ASC 718, Stock Compensation (ASC 718). As such, all share-based payments to employees, including grants of stock options, restricted stock units, performance stock units and market stock units and shares issued under the Company’s employee stock purchase plan, are recognized in the Consolidated Statements of Operations based on their fair values on the date of grant.

Net Income Per Share

Basic net income per share is computed by dividing net income by the weighted average number of common shares outstanding. Diluted net income per share is computed by dividing net income by the weighted average number of common shares and the dilutive effect of potential future issuances of common stock from outstanding stock options, restricted stock units and convertible debt determined by applying the treasury stock method. In accordance with ASC 718, the assumed proceeds under the treasury stock method include the average unrecognized compensation expense of in-the-money stock options and restricted stock units. This results in the assumed buyback of additional shares, thereby reducing the dilutive impact of equity awards.

The Company applies the provisions of ASC 260, Earnings Per Share, Subsection 10-45-44, to determine the diluted weighted average shares outstanding as it relates to its convertible notes, and due to the type of debt instrument issued and its accounting policy, the Company applies the treasury stock method and not the if-converted method. The dilutive impact of the Company’s convertible notes is based on the difference between the Company’s current period average stock price and the conversion price of the convertible notes, provided there is a premium. As such, dilution related to the conversion premium on the 2010 Notes, 2012 Notes and 2013 Notes is included in the calculation of diluted weighted-average shares outstanding in fiscal 2016 and 2015 to the extent each issuance is dilutive based on the average stock price during each reporting period being greater than the conversion price of the respective Notes. In fiscal 2014, only the dilution of the conversion premium on the 2010 Notes is included in diluted weighted-average shares outstanding.

F-19

A reconciliation of basic and diluted share amounts for fiscal 2016, 2015, and 2014 was as follows:

	September 24, 2016	September 26, 2015	September 27, 2014
Basic weighted average common shares outstanding	280,213	280,566	275,499
Weighted average common stock equivalents from assumed exercise of stock options and restricted stock units	2,631	2,898	2,368
Incremental shares from Convertible Notes premium	3,312	6,073	493
Diluted weighted average common shares outstanding	286,156	289,537	278,360
Weighted-average anti-dilutive shares related to:
Outstanding stock options	1,029	1,502	5,033
Restricted stock units	62	49	20

In those reporting periods in which the Company has reported net income, anti-dilutive shares generally are comprised of those stock options that either have an exercise price above the average stock price for the period or the stock options’ combined exercise price, average unrecognized stock compensation expense and assumed tax benefits upon exercise is greater than the average stock price for the period.

Product Warranties

The Company generally offers a one-year warranty for its products. The Company provides for the estimated cost of product warranties at the time product revenue is recognized. Factors that affect the Company’s warranty reserves include the number of units sold, historical and anticipated rates of warranty repairs and the cost per repair. The Company periodically assesses the adequacy of the warranty reserve and adjusts the amount as necessary.

Product warranty activity for fiscal 2016 and 2015 was as follows:

	Balance at Beginning of Period		Provisions		Settlements/ Adjustments			Balance at End of Period
Period ended:
September 24, 2016	$	5.4	$	7.1	$	(7.5	)	$	5.0
September 26, 2015	$	6.3	$	6.1	$	(7.0	)	$	5.4

Advertising Costs

Advertising costs are charged to operations as incurred. The Company does not have any direct-response advertising. Advertising costs, which include trade shows and conventions, were approximately $20.2 million, $14.4 million and $14.1 million for fiscal 2016, 2015 and 2014, respectively, and were included in selling and marketing expense in the Consolidated Statements of Income.

Recently Adopted Accounting Pronouncements

On September 27, 2015, the Company early adopted FASB ASU No. 2015-17, Balance Sheet Classification of Deferred Taxes, which simplifies the presentation of deferred income taxes by eliminating the requirement for entities to separate deferred income tax liabilities and assets into current and noncurrent amounts in the balance sheet. Rather, it requires deferred tax assets and liabilities to be classified as noncurrent in the balance sheet. The Company adopted this standard prospectively in the first quarter of fiscal 2016, and prior periods were not retrospectively adjusted.

On June 26, 2016, the Company retrospectively adopted FASB ASU 2015-13, Presentation of Debt Issuance Costs, which simplifies the presentation of debt issuance costs and requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from that debt liability consistent with the presentation of a debt discount and not recorded as separate assets. The Company adopted this standard in the fourth quarter of fiscal 2016, and the fiscal 2015 balance sheet was retrospectively recast. In fiscal 2015, the Company had $0.6 million related to current debt issuance costs recorded in prepaid expenses and other current assets and $27.0 million related to non-current debt issuance costs recorded in other assets. The adoption of this standard resulted in these amounts being reclassified as liabilities, reducing both the current

F-20

portion of long-term debt and long-term debt, net of current portion at the end of fiscal 2015 by $27.6 million in total and a corresponding reduction to the aforementioned asset accounts. Debt issuance costs will no longer be recorded as an asset.

Recently Issued Accounting Pronouncements

In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740). The guidance requires companies to recognize the income tax effects of intercompany sales and transfers of assets, other than inventory, in the income statement as income tax expense (or benefit) in the period in which the transfer occurs. The guidance is effective for annual periods beginning after December 15, 2017, and is applicable to the Company in fiscal 2019. Early adoption is permitted as of the beginning of an annual reporting period. The Company is currently evaluating the impact of the adoption of ASU 2016-16 on its consolidated financial position and results of operations.

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flow (Topic 230). The guidance reduces diversity in how certain cash receipts and cash payments are presented and classified in the Statements of Cash Flows. Certain of ASU 2016-15 requirements are as follows: 1) cash payments for debt prepayment or debt extinguishment costs should be classified as cash outflows for financing activities, 2) contingent consideration payments made soon after a business combination should be classified as cash outflows for investing activities and cash payment made thereafter should be classified as cash outflows for financing up to the amount of the contingent consideration liability recognized at the acquisition date with any excess classified as operating activities, 3) cash proceeds from the settlement of insurance claims should be classified on the basis of the nature of the loss, 4) cash proceeds from the settlement of Corporate-Owned Life Insurance (COLI) Policies should be classified as cash inflows from investing activities and cash payments for premiums on COLI policies may be classified as cash outflows for investing activities, operating activities, or a combination of investing and operating activities, and 5) cash paid to a tax authority by an employer when withholding shares from an employee's award for tax-withholding purposes should be classified as cash outflows for financing activities. The guidance is effective for annual periods beginning after December 15, 2017, and is applicable to the Company in fiscal 2019. Early adoption is permitted. The adoption of ASU 2016-15 is not expected to have a material effect on the Company's consolidated financial statements.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326). The guidance requires that financial assets measured at amortized cost be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis. The income statement reflects the measurement of credit losses for newly recognized financial assets, as well as the expected credit losses during the period. The measurement of expected credit losses is based upon historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. Credit losses relating to available-for-sale debt securities will be recorded through an allowance for credit losses rather than as a direct write-down to the security. The updated guidance is effective for annual periods beginning after December 15, 2019, and is applicable to the Company in fiscal 2021. Early adoption is permitted. The Company is currently evaluating the impact of the adoption of ASU 2016-13 on its consolidated financial position and results of operations.

In March 2016, the FASB issued ASU No. 2016-09, Compensation - Stock Compensation (Topic 718). The guidance changes how companies account for certain aspects of share-based payments to employees. Entities will be required to recognize income tax effects of awards in the income statement when the awards vest or are settled. The guidance also allows an employer to repurchase more of an employee's shares than it can today for tax withholding purposes by providing for withholding at the employee's maximum rate as opposed to the minimum rate without triggering liability accounting and by allowing an entity-wide policy election to account for forfeitures as they occur. The updated guidance is effective for annual periods beginning after December 15, 2016, and is applicable to the Company in fiscal 2018. Early adoption is permitted. The adoption of ASU 2016-09 is not expected to have a material effect on the Company's consolidated financial position and results of operations, although the income tax affect from vesting of stock units and option exercises could be significant to quarterly results of operations.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). The guidance requires an entity to recognize a right-of-use asset and a lease liability for virtually all of its leases with terms of more than 12 months. Recognition, measurement and presentation of expenses will depend on classification as a finance or operating lease. The amendments also require certain quantitative and qualitative disclosures about leasing arrangements. The guidance is effective for annual periods beginning after December 15, 2018, and is applicable to the Company in fiscal 2020. Early adoption is permitted. The updated guidance requires a modified retrospective adoption. The Company is currently evaluating the impact of the adoption of ASU 2016-02 on its consolidated financial position and results of operations.

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In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. This guidance changes how entities measure equity investments that do not result in consolidation and are not accounted for under the equity method. Entities will be required to measure these investments at fair value at the end of each reporting period and recognize changes in fair value in net income. A practicability exception will be available for equity investments that do not have readily determinable fair values, however; the exception requires the Company to consider relevant transactions that can be reasonably known to identify any observable price changes that would impact the fair value. This guidance also changes certain disclosure requirements and other aspects of current US GAAP. This guidance is effective for annual periods beginning after December 15, 2017, and is applicable to the Company in fiscal 2019. Early adoption is permitted. The Company is currently evaluating the impact of the adoption of ASU 2016-01 on its consolidated financial position and results of operations.

In July 2015, the Financial Accounting Standards Board (FASB) issued guidance under ASC 330, Simplifying the Measurement of Inventory. The new guidance requires inventory to be measured at the lower of cost and net realizable value, which is defined as the estimated selling price in the ordinary course of business less reasonably predictable costs of completion, disposal and transportation. This new guidance is effective for the Company's first quarter of fiscal 2018 and early adoption is permitted. The guidance must be applied prospectively. The Company is currently evaluating the impact of the adoption of this requirement on its consolidated financial statements but does not anticipate that adoption of this guidance will have a material impact on its consolidated financial statements.

In February 2015, the FASB issued ASU No. 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis. This guidance focuses on a reporting company’s consolidation evaluation to determine whether certain legal entities should be consolidated. This guidance is effective for annual periods beginning after December 15, 2015, and is applicable to the Company in fiscal 2017. Early adoption is permitted, including adoption in an interim period. The Company is currently evaluating this guidance, but does not anticipate that adoption of this guidance will have a material impact on its consolidated financial statements.

In August 2014, the FASB issued ASU No. 2014-15, Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern. ASU 2014-15 requires management to evaluate, at each annual or interim reporting period, whether there are conditions or events that exist that raise substantial doubt about an entity's ability to continue as a going concern within one year after the date the financial statements are issued and provide related disclosures. ASU 2014-15 is effective for annual periods ending after December 15, 2016 and is applicable to us in fiscal 2018. Earlier application is permitted. The adoption of ASU 2014-15 is not expected to have a material effect on the Company's consolidated financial statements or disclosures.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 660), which provides guidance for revenue recognition. This ASU is applicable to any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets. ASU 2014-09 will supersede the revenue recognition requirements in Topic 605, Revenue Recognition, and most industry-specific guidance. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled to receive in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under current U.S. GAAP. These judgments may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. On July 9, 2015, the FASB voted in favor of delaying the effective date of the new standard by one year, with early adoption permitted as of the original effective date. ASU 2014-09 is effective prospectively for fiscal years, and interim reporting periods within those years, beginning after December 15, 2017, which is fiscal 2019 for the Company. The Company is currently evaluating the impact of the adoption of ASU 2014-09 on its consolidated financial position and results of operations.

F-22

3. Restructuring and Divestiture Charges

The Company evaluates its operations for opportunities to improve operational effectiveness and efficiency, including facility and operations consolidation, and to better align expenses with revenues. As a result of these assessments, the Company has undertaken various restructuring actions which are described below. The following table displays charges taken related to restructuring actions in fiscal 2016, 2015 and 2014 and a rollforward of the charges to the accrued balances as of September 24, 2016:

	Fiscal 2016 Actions		Fiscal 2015 Actions		Fiscal 2014 Actions		Consolidation of Diagnostics Operations		Other Operating Cost Reductions		Total
Restructuring and Divestiture Charges
Fiscal 2014 charges:
Workforce reductions	$	—	$	—	$	29.5	$	2.9	$	9.8	$	42.2
Non-cash impairment charge	—		—		—		—		3.1		3.1
Facility closure costs	—		—		—		—		0.6		0.6
Other	—		—		—		0.1		0.2		0.3
Fiscal 2014 restructuring charges	$	—	$	—	$	29.5	$	3.0	$	13.7	$	46.2
Divestiture net charges											5.5
Fiscal 2014 restructuring and divestiture charges											$	51.7
Fiscal 2015 charges:
Workforce reductions	$	—	$	10.0	$	6.0	$	0.1	$	0.2	$	16.3
Facility closure costs	—		—		2.0		0.5		0.1		2.6
Fiscal 2015 restructuring charges	$	—	$	10.0	$	8.0	$	0.6	$	0.3	$	18.9
Divestiture net charges											9.6
Fiscal 2015 restructuring and divestiture charges											$	28.5
Fiscal 2016 charges:
Workforce reductions	$	10.5	$	—	$	—	$	—	$	—	$	10.5
Fiscal 2016 restructuring charges	$	10.5	$	—	$	—	$	—	$	—	$	10.5

F-23

	Fiscal 2016 Actions			Fiscal 2015 Actions			Fiscal 2014 Actions			Consolidation of Diagnostics Operations			Other Operating Cost Reductions			Total
Rollforward of Accrued Restructuring
Balance as of September 28, 2013	$	—		$	—		$	—		$	3.0		$	9.3		$	12.3
Fiscal 2014 restructuring charges	$	—		$	—		$	29.5		$	3.0		$	13.7		$	46.2
Stock-based compensation	—			—			(6.6		)	—			—			(6.6		)
Non-cash impairment charges	—			—			—			—			(3.1		)	(3.1		)
Severance payments	—			—			(10.9		)	(3.0		)	(17.1		)	(31.0		)
Other payments	—			—			—			—			(0.9		)	(0.9		)
Balance as of September 27, 2014	$	—		$	—		$	12.0		$	3.0		$	1.9		$	16.9
Fiscal 2015 restructuring charges	$	—		$	10.0		$	8.0		$	0.6		$	0.3		$	18.9
Stock-based compensation	—			(4.1		)	—			—			—			(4.1		)
Severance payments	—			(2.8		)	(16.2		)	(3.0		)	(1.9		)	(23.9		)
Other payments	—			—			(1.3		)	(0.5		)	(0.3		)	(2.1		)
Balance as of September 26, 2015	$	—		$	3.1		$	2.5		$	0.1		$	—		$	5.7
Fiscal 2016 restructuring charges	$	10.5		$	—		$	—		$	—		$	—		$	10.5
Stock-based compensation	(0.4		)	—			—			—			—			(0.4		)
Severance payments	(4.6		)	(2.9		)	(1.4		)	(0.1		)	—			(9.0		)
Other payments	—			—			(0.5		)	—			—			(0.5		)
Balance as of September 24, 2016	$	5.5		$	0.2		$	0.6		$	—		$	—		$	6.3

Fiscal 2016 Actions

During the fourth quarter of fiscal 2016, the Company decided to initiate a cost reduction initiative in part of its Diagnostic's reportable segment, resulting in the termination of certain employees. The majority of employees were notified of termination and related benefits in the fourth quarter of fiscal 2016, and the Company recorded these charges pursuant to ASC 420, Exit or Disposal Cost Obligations (ASC 420) as the benefits qualify as one-time termination benefits. As such, the Company recorded a charge for severance and benefits of $0.9 million in the fourth quarter. Additional charges of $0.2 million are expected in fiscal 2017 related to this Action.

During the third quarter of fiscal 2015, the Company decided to close its Bedford, Massachusetts facility where it manufactured its Skeletal Health products and provided certain support manufacturing services for its Breast Health segment. The manufacturing of the Skeletal Health products has been outsourced to a third-party, and the Breast Health manufacturing services were moved to the Company's Danbury, Connecticut and Marlborough, Massachusetts facilities. In addition, research and development, sales and services support and administrative functions have been or will be moved to both Marlborough and Danbury. The transition is expected to be substantially completed by the end of calendar year 2016. In connection with this plan, certain employees, primarily in manufacturing, were terminated. The employees were notified of termination and related benefits in the first quarter of fiscal 2016, and the Company recorded these charges pursuant to ASC 420. Employees were required to remain employed during this transition period and charges were recorded ratably over the required service period. The Company recorded $1.7 million in severance and benefits charges related to this action in fiscal 2016. This action is complete and no additional severance and benefits charges are expected.

F-24

In connection with shutting down the Bedford location, the Company expects to record lease obligation charges ranging from approximately $8.0 million to $12.0 million in fiscal 2017 as it meets the cease-use date requirements for a portion of the facility. In order to estimate the lease obligation charges, the Company has made certain assumptions including the time period it will take to obtain a subtenant and certain sub-lease rates. These estimates may vary from the sub-lease agreements ultimately executed, if at all, resulting in an adjustment to the charges.

During the first quarter of fiscal 2016, the Company began implementing a second plan to consolidate and improve operational efficiency of its international sales and marketing and field services operations and certain support functions. As a result, the Company identified and terminated certain employees during each quarter in fiscal 2016. Severance and benefits under this action were recorded pursuant to ASC 712, Compensation-Nonretirement Postemployment Benefits (ASC 712), and ASC 420 depending on the circumstances. The Company recorded severance and benefit charges of $7.9 million in fiscal 2016 related to this plan. Included in this charge was $0.4 million of stock-based compensation.

Fiscal 2015 Actions

During each quarter of fiscal 2015, the Company continued to make executive management changes resulting in the termination of certain executives and employees on a worldwide basis. In addition, the Company continued to consolidate and close certain international offices to improve operational efficiency and reduce costs. Severance and benefit charges under these actions were recorded pursuant to ASC 712 and ASC 420 depending on the employees terminated, and the Company recorded severance and benefit charges of $10.0 million in fiscal 2015. Included in the charge was $4.1 million of stock-based compensation. No additional charges will be recorded under these actions.

In connection with its review of operations, the Company decided to shut-down its manufacturing operation in China, which manufactured mammography systems for the Chinese market. As a result, the Company terminated manufacturing and research and development personnel located in China, and the severance charge was insignificant.

Fiscal 2014 Actions

During the first quarter of fiscal 2014, the Company implemented a cost reduction initiative comprised of reducing headcount and evaluating research projects and operating costs. In connection with this plan, the Company terminated certain employees on a worldwide basis. The Company recorded the severance and benefit charges pursuant to ASC 420 and ASC 712, depending on the employee terminated. The Company recorded $6.3 million of severance and benefit charges in the first quarter of fiscal 2014, which included $0.4 million of stock-based compensation.

On December 6, 2013, Stephen P. MacMillan was appointed as President, Chief Executive Officer and a director of the Company. The employment of John W. Cumming, the Company’s prior President and Chief Executive Officer, terminated upon Mr. MacMillan’s appointment. The Company provided separation benefits to Mr. Cumming pursuant to his employment letter dated July 18, 2013 resulting in a charge of $6.6 million in the first quarter of fiscal 2014, which included $4.4 million of stock-based compensation related to the acceleration of all of Mr. Cumming’s outstanding equity awards in accordance with the existing terms of Mr. Cumming’s share-based payment arrangements.

In the second, third, and fourth quarters of fiscal 2014, the Company continued to make executive management changes and implement additional cost reduction initiatives resulting in the termination of certain executives and employees on a worldwide basis. In addition, in the fourth quarter of fiscal 2014 the Company decided to consolidate and close certain international offices. Severance and benefit charges under these actions were recorded pursuant to ASC 420 and ASC 712 depending on the employees terminated, and the Company recorded severance and benefit charges of $16.6 million in fiscal 2014. Included in the charge was $1.8 million of stock-based compensation for the modification of the terms of equity awards to certain employees. For those employees who continued to be employed beyond the minimum retention period, charges were recorded ratably over the estimated service period of the affected employees.

During fiscal 2015, the Company recorded $6.0 million for severance and benefits costs and $2.0 million for facility closure costs related to this action. The facility closure costs primarily relate to lease obligation charges for three office locations that were vacated and the Company had met the cease-use date criteria. This action was completed in fiscal 2015.

F-25

Consolidation of Diagnostics Operations

In connection with its acquisition of Gen-Probe in fiscal 2012, the Company implemented restructuring actions to consolidate its Diagnostics operations, including streamlining product development initiatives, reducing overlapping functional areas in sales, marketing and general and administrative functions, and consolidating manufacturing resources, field services and support. As a result, the Company terminated certain employees from Gen-Probe and its legacy diagnostics business in research and development, sales, marketing, and general and administrative functions. The Company recorded severance and benefit charges in fiscal 2012 of $13.3 million related to this action pursuant to ASC 420, Exit or Disposal Cost Obligations (ASC 420). The majority of these employees ceased working in the fourth quarter of fiscal 2012, and their full severance charge was recorded in the fourth quarter of fiscal 2012. In addition, certain of the terminated Gen-Probe employees had unvested stock options, which were accelerated at termination pursuant to the stock options’ original terms. As such, the severance charges in fiscal 2012 include $3.5 million of stock-based compensation expense. In fiscal 2013, the Company recorded $10.8 million of severance charges, including $6.3 million for stock-based compensation. Included in these charges was $9.7 million recorded in the second quarter of fiscal 2013 related to the termination of certain Gen-Probe executives, including Carl Hull, Gen-Probe’s former Chairman, President and Chief Executive Officer. The charge was for the acceleration of certain retention payments and equity awards pursuant to the original terms of the related agreements. No additional charges were recorded in fiscal 2014, 2015 or 2016 under this portion of the action.

In addition, under this plan, the Company completed moving its legacy molecular diagnostics operations from Madison, Wisconsin to Gen-Probe’s facilities in San Diego, California. This transfer was completed at the end of fiscal 2014, and as a result, many of the employees in Madison were terminated. The Company recorded severance and benefit charges pursuant to ASC 420 beginning in fiscal 2012 through the third quarter of fiscal 2015 as charges were recorded over requisite service periods. The Company recorded $0.1 million, $3.0 million, $3.2 million and $0.9 million for severance and benefits in fiscal 2015, 2014, 2013 and 2012, respectively, and $0.5 million for facility closure costs in fiscal 2015. The Company also recorded non-cash charges of $0.6 million in the fourth quarter of fiscal 2012 as a result of exiting certain research projects. This action is complete and no additional charges were recorded in fisca1 2016.

Other Operating Cost Reductions:

Hitec-Imaging Organic Photoconductor Manufacturing Line Shut-down

In the fourth quarter of fiscal 2013, in connection with the Company’s cost reduction initiatives, the Company decided to shut-down its Hitec-Imaging organic photoconductor manufacturing line located in Germany. This production line was included within the Breast Health segment. As a result, the Company terminated certain employees, primarily in manufacturing, in fiscal 2014. During the first quarter of fiscal 2014, the Company completed its negotiations with the local Works Council to determine severance benefits for the approximately 95 affected employees. The Company recorded severance and benefit charges pursuant to ASC 420 and began notifying the affected employees in the second quarter of fiscal 2014. The Company recorded charges of $0.3 million and $8.7 million in fiscal 2015 and 2014, respectively in connection with terminating these employees.

In the first quarter of fiscal 2014, the Company recorded an impairment charge of $3.1 million to record certain buildings at this location to their estimated fair value.

Divestitures

In the fourth quarter of fiscal 2014, the Company completed the sale of its MRI breast coils product line and recorded a loss on disposal of $5.3 million. The Company also provided certain transition services through April 2015, including the manufacturing and sale of inventory to the buyer. Since all operations had ceased during the third quarter of fiscal 2015, the Company concluded that this subsidiary had been substantially liquidated and recorded a $9.6 million charge in the third quarter of fiscal 2015 related to writing off the cumulative translation adjustment related to the subsidiary.

F-26

4. Borrowings and Credit Agreements

The Company’s borrowings consisted of the following:

	September 24, 2016		September 26, 2015
Current debt obligations, net of debt discount and issuance costs:
Term Loan	$	83.8	$	74.4
Revolver	—		175.0
Securitization Program	200.0		—
Convertible Notes	12.2		141.8
Total current debt obligations	296.0		391.2
Long-term debt obligations, net of debt discount and issuance costs:
Term Loan	1,308.2		1,388.3
2022 Senior Notes	977.7		973.9
Convertible Notes	763.5		858.8
Total long-term debt obligations	3,049.4		3,221.0
Total debt obligations	$	3,345.4	$	3,612.2

In April 2015, the FASB issued ASU No. 2015-03, Presentation of Debt Issuance Costs. ASU 2015-03 simplifies the presentation of debt issuance costs and requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from that debt liability consistent with the presentation of a debt discount and not recorded as separate assets. The Company adopted this standard in the fourth quarter of fiscal 2016, and the prior period was retrospectively adjusted. In fiscal 2015, the Company had $0.6 million related to current debt issuance costs recorded in prepaid expenses and other current assets and $27.0 million related to non-current debt issuance costs recorded in other assets. The adoption of this standard resulted in these amounts being reclassified as liabilities, reducing both the current portion of long-term debt and long-term debt, net of current portion at the end of fiscal 2015 by $27.6 million in total and a corresponding reduction to the aforementioned asset accounts. Debt issuance costs will no longer be recorded as an asset.

The debt maturity schedule for the Company’s obligations as of September 24, 2016 is as follows:

	2017		2018		2019		2020		2021		2022 and Thereafter		Total
Term Loan	$	84.4	$	121.9	$	150.0	$	1,050.0	$	—	$	—	$	1,406.3
Securitization Program	200.0		—		—		—		—		—		200.0
2022 Senior Notes	—		—		—		—		—		1,000.0		1,000.0
Convertible Notes (1)	12.3		790.4		—		—		—		—		802.7
	$	296.7	$	912.3	$	150.0	$	1,050.0	$	—	$	1,000.0	$	3,409.0

(1) Classified based on the earliest date of redemption for each respective issuance. In addition, the balance in fiscal 2018 reflects accretion on the 2013 Notes through September 24, 2016.

Credit Agreement

On May 29, 2015, the Company and certain of its domestic subsidiaries entered into a Credit and Guaranty Agreement (the “Credit Agreement”) with Bank of America, N.A., in its capacity as Administrative Agent, Swing Line Lender and L/C Issuer, and certain other lenders party thereto (collectively, the "Lenders"). This Credit Agreement replaced the Company's existing senior secured credit facility with Goldman Sachs Bank USA, in its capacity as administrative agent and collateral agent and the lenders party thereto ("Prior Credit Agreement") entered into on August 1, 2012, and the proceeds under the Credit Agreement of $1.68 billion were used to pay off the amounts outstanding under the Prior Credit Agreement.

F-27

The credit facilities ("Credit Facilities") under the Credit Agreement consist of:

• A $1.5 billion secured term loan to the Company with a final maturity date of May 29, 2020 (the “Term Loan”); and

• A secured revolving credit facility under which the Borrowers (as defined below) may borrow up to $1 billion, subject to certain sublimits, with a final maturity date of May 29, 2020 (the “Revolver”).

The Company and one of its subsidiaries, Hologic GGO 4 Ltd ("Hologic U.K."), are the initial borrowers (the “Borrowers”) under the Credit Agreement. The Company's obligations under the Credit Agreement are guaranteed by certain of its domestic subsidiaries (the "Subsidiary Guarantors"). Hologic U.K.’s obligations under the Credit Agreement are guaranteed by the Company and the Subsidiary Guarantors.

In addition to the Term Loan, the Company borrowed $175.0 million under the Revolver upon entering into the Credit Agreement that was subsequently repaid during fiscal 2016. Borrowings under the Revolver may be made in certain alternative currencies pursuant to the terms of the Credit Agreement. The Company has the ability, subject to the terms of the Credit Agreement, to designate any additional wholly-owned foreign subsidiary of the Company as a Designated Borrower (as defined in the Credit Agreement) to receive loans up to a $100 million sublimit. The obligations of any Designated Borrower under such sublimit would be guaranteed by the Company and the Subsidiary Guarantors. During fiscal 2016, the Company added Hologic UK Finance, Ltd as a Designated Borrower.

Borrowings under the Credit Facilities bear interest, at the Company's option and in each case plus an applicable margin, as follows:

• Term Loan: the Base Rate (as defined in the Credit Agreement) or the Eurocurrency Rate (i.e., the Libor rate); and

• Revolver: if funded in U.S. dollars, the Base Rate or the Eurocurrency Rate, and, if funded in an alternative currency, the Eurocurrency Rate; and if requested under the swing line sublimit, the Base Rate.

The applicable margin to the Base Rate and the Eurocurrency Rate is subject to specified changes depending on the total net leverage ratio as defined in the Credit Agreement. Current borrowings outstanding under the Credit Agreement bear interest at the Eurocurrency Rate plus the applicable margin, which is currently 1.50% per annum. The Company is also required to pay a quarterly commitment fee on the undrawn committed amount available under the Revolver.

The Company is required to make scheduled principal payments under the Term Loan in increasing amounts ranging from $18.75 million per three-month period commencing with the three-month period ending on September 25, 2015 to $37.5 million per three-month period commencing with the three-month period ending on September 28, 2018. The remaining balance of the Term Loan is due at maturity. Any amounts outstanding under the Revolver are due at maturity. In addition, subject to the terms and conditions set forth in the Credit Agreement, the Company may be required to make certain mandatory prepayments from specified excess cash flows from operations (to the extent the Company’s net senior secured leverage ratio exceeds a certain ratio) and from the net proceeds of specified types of asset sales (subject to certain reinvestment rights), debt issuances and insurance recoveries (subject to certain reinvestment rights) (“Mandatory Prepayments”). Mandatory Prepayments are required to be applied by the Company, first, to the Term Loan, second, to any outstanding amount under the swing line sublimit, third, to the Revolver, and fourth to any outstanding amount under a letter of credit sublimit. Subject to certain limitations, the Company may voluntarily prepay any of the credit facilities under the Credit Agreement without premium or penalty.

Borrowings outstanding under the Credit Agreement in fiscal 2016 and a combination of the Credit Agreement and the Prior Credit Agreement in fiscal 2015 had weighted-average interest rates of 2.08% and 2.43%, respectively. The interest rate on the amounts outstanding at September 24, 2016 was 2.05%. Interest expense in fiscal 2016 and 2015 under the Credit Agreement and the Prior Credit Agreement aggregated $40.4 million and $54.7 million, respectively, which includes non-cash interest expense of $4.4 million and $9.0 million, respectively, related to the amortization of the deferred issuance costs and accretion of the debt discount.  

The Credit Agreement contains affirmative and negative covenants customarily applicable to senior secured credit facilities, including covenants restricting the ability of the Borrowers and the Subsidiary Guarantors, subject to negotiated exceptions, to incur additional indebtedness and additional liens on their assets, engage in mergers or acquisitions or dispose of assets, enter into sale-leaseback transactions, pay dividends or make other distributions, voluntarily prepay other indebtedness, enter into transactions with affiliated persons, make investments, and change the nature of their businesses. The Credit Agreement also contains customary representations and warranties and events of default, including payment defaults, breach of representations and warranties, covenant defaults, cross defaults and an event of default upon a change of control of the Company.

F-28

Borrowings are secured by first-priority liens on, and a first-priority security interest in, substantially all of the assets of the Company, with certain exceptions. For example, borrowings under the Credit Agreement are not secured by those accounts receivable that are transferred to the special purpose entity under the Company's Accounts Receivable Securitization program. The Credit Agreement contains total net leverage ratio and interest coverage ratio financial covenants measured as of the last day of each fiscal quarter and an excess cash flow prepayment requirement measured as of the end of each fiscal year. The total net leverage ratio is 5.50:1.00 beginning on the Company's fiscal quarter ended September 26, 2015, and then decreases over time to 4.00:1.00 for the quarter ending March 28, 2020. The interest coverage ratio is 3.75:1.00 beginning on the Company's fiscal quarter ended September 26, 2015, and will remain as such for each quarter thereafter. The total net leverage ratio is defined as the ratio of the Company's consolidated net debt as of the quarter end to its consolidated adjusted EBITDA (as defined in the Credit Agreement) for the four-fiscal quarter period ending on the measurement date. The interest coverage ratio is defined as the ratio of the Company's consolidated adjusted EBITDA for the prior four-fiscal quarter period ending on the measurement date to adjusted consolidated cash interest expense (as defined in the Credit Agreement) for the same measurement period. These terms, and the calculation thereof, are defined in further detail in the Credit Agreement. The Company was in compliance with these covenants as of September 24, 2016, and no Mandatory Prepayments were required as of September 24, 2016.

The Company has evaluated the Credit Agreement for derivatives pursuant to ASC 815, Derivatives and Hedging, and identified embedded derivatives that require bifurcation as the features are not clearly and closely related to the host instrument. The embedded derivatives are a default provision, which could require additional interest payments, and a provision requiring contingent payments to compensate the lenders for changes in tax deductions. The Company has determined that the fair value of these embedded derivatives was nominal as of September 24, 2016 and September 26, 2015.

Pursuant to ASC 470, Debt (ASC 470), the accounting for the Credit Agreement was evaluated on a creditor-by-creditor basis with regard to the Prior Credit Agreement to determine whether each transaction should be accounted for as a modification or extinguishment. Certain creditors under the Prior Credit Agreement did not participate in this refinancing transaction and ceased being creditors of the Company. As a result, the Company recorded a debt extinguishment loss of $18.2 million in the third quarter of fiscal 2015 to write-off the pro-rata amount of unamortized debt discount and deferred issuance costs related to these creditors. For the remainder of the creditors, this transaction has been accounted for as a modification because on a creditor-by-creditor basis the present value of the cash flows between the two debt instruments before and after the transaction was less than 10%. Pursuant to ASC 470, subtopic 50-40, third-party costs of $4.6 million related to this transaction were recorded as interest expense and $3.8 million were recorded as deferred issuance costs to be amortized over the term of the agreement. In addition, fees paid directly to the Lenders of $4.9 million were recorded as a debt discount.

On May 6, 2016, the Company used the proceeds borrowed under the Securitization Program, discussed below, to repay $175.0 million owed under its Revolver. No amounts are outstanding under the Revolver as of September 24, 2016.

Prior Credit Agreement

On August 1, 2012, the Company and certain domestic subsidiaries (the “Guarantors”) entered into the Prior Credit Agreement with Goldman Sachs Bank USA, in its capacity as administrative and collateral agent, and the lenders party thereto (collectively, the “Prior Lenders”).

The credit facilities under the Prior Credit Agreement initially consisted of:

• $1.0 billion senior secured tranche A term loan (“Term Loan A”) with a final maturity date of August 1, 2017;

• $1.5 billion secured tranche B term loan (“Term Loan B”) with a final maturity date of August 1, 2019; and

• $300.0 million secured revolving credit facility (“Revolving Facility”) with a final maturity date of August 1, 2017.

Pursuant to the terms and conditions of the Prior Credit Agreement, the Prior Lenders committed to provide senior secured financing in an aggregate amount of up to $2.8 billion. As of the closing of the Gen-Probe Incorporated acquisition on August 1, 2012, the Company borrowed $2.5 billion aggregate principal under the term loans of the Prior Credit Agreement. Net proceeds to the Company were $2.41 billion, after issuing the term loans at a discount and deducting associated fees and expenses, all of which were being amortized to interest expense over the respective maturity dates of the debt. The proceeds were used to fund a portion of the purchase price for the Gen-Probe acquisition.

On October 31, 2013, the Company voluntarily prepaid $100.0 million of the Term Loan B facility. Pursuant to ASC 470, the Company recorded a debt extinguishment loss of $2.9 million in the first quarter of fiscal 2014 to write-off the pro-rata amount of unamortized debt discount and deferred issuance costs related to this voluntary prepayment.

On February 26, 2014, the Company, the Guarantors, Goldman Sachs, and the Prior Lenders entered into Refinancing Amendment No. 3 to the Prior Credit Agreement and reduced the applicable interest rates. In connection with this refinancing, the Company voluntarily prepaid $25.0 million of the new senior secured tranche B term loan facility. Pursuant to ASC 470, the accounting for this refinancing was evaluated on a creditor-by-creditor basis to determine whether each transaction should

F-29

be accounted for as a modification or extinguishment. Certain creditors under the Prior Credit Agreement did not participate in this refinancing transaction and ceased being creditors of the Company. As a result, the Company recorded a debt extinguishment loss of $4.4 million in the second quarter of fiscal 2014 to write-off the pro-rata amount of unamortized debt discount and deferred issuance costs related to these creditors. For the remainder of the creditors, this transaction was accounted for as a modification because on a creditor-by-creditor basis the present value of the cash flows between the two debt instruments before and after the transaction was less than 10%. Pursuant to ASC 470, subtopic 50-40, third-party costs of $1.0 million related to this transaction were recorded to interest expense.

On December 24, 2014, the Company voluntarily prepaid $300.0 million of the Term Loan B facility. Pursuant to ASC 470, the Company recorded a debt extinguishment loss of $6.7 million in the first quarter of fiscal 2015 to write-off the pro-rata amount of unamortized debt discount and deferred issuance costs related to this voluntary prepayment.

Borrowings outstanding under the Prior Credit Agreement in fiscal 2014 had weighted-average interest rate of 2.89%. Interest expense under the Prior Credit Agreement totaled $75.3 million for fiscal 2014, which included non-cash interest expense of $12.7 million, related to the amortization of the deferred financing costs and accretion of the debt discount.

Senior Notes

2022 Senior Notes

On July 2, 2015, the Company completed a private placement of $1.0 billion aggregate principal amount of its 5.250% Senior Notes due 2022 (the “2022 Senior Notes”) at an offering price of 100% of the aggregate principal amount of the 2022 Senior Notes. The 2022 Senior Notes mature on July 15, 2022 and bear interest at the rate of 5.250% per year, payable semi-annually on January 15 and July 15 of each year, commencing on January 15, 2016. The Company used the net proceeds of the 2022 Senior Notes, plus available cash to discharge the outstanding 6.25% Senior Notes due 2020 (the "Senior Notes") and redeemed such Senior Notes, in the aggregate principal amount of $1.0 billion on August 1, 2015 at an aggregate redemption price of $1.03 billion, reflecting a premium payment of $31.25 million. In addition, the Company made a final interest payment in the amount of $31.25 million for interest accrued to August 1, 2015, to holders of record of the Senior Notes as of July 15, 2015. As a result of this transaction, the Company recorded a debt extinguishment loss in the fourth quarter of fiscal 2015 of $22.3 million, which included the pro-rata premium payment and pro-rata debt issuance costs. The Company evaluated the accounting under ASC 470 at the creditor-by-creditor level to determine modification versus extinguishment accounting.

The Company recorded interest expense related to the 2022 Senior Notes and Senior Notes of $56.0 million, $67.2 million and $64.0 million in fiscal 2016, 2015 and 2014, respectively, which includes non-cash interest expense of $3.8 million, $2.1 million and $1.7 million in fiscal 2016, 2015 and 2014, respectively, related to the amortization of the deferred financing costs.

The 2022 Senior Notes were not registered, and will be not registered, under the Securities Act of 1933, as amended (the “Securities Act”), or any state securities laws, and were offered only to qualified institutional buyers in reliance on Rule 144A under the Securities Act and outside the United States in accordance with Regulation S under the Securities Act. The 2022 Senior Notes are general senior unsecured obligations of the Company and are guaranteed on a senior unsecured basis by certain domestic subsidiaries of Hologic (the “Domestic Guarantors”).

The 2022 Senior Notes were issued pursuant to an indenture (the "Indenture"), dated as of July 2, 2015, among the Company, the Domestic Guarantors and Wells Fargo Bank, National Association, as trustee. The Indenture contains covenants which limit, among other things, the ability of the Company and the Domestic Guarantors to incur additional indebtedness and additional liens on their assets, engage in mergers or acquisitions or dispose of assets, pay dividends or make other distributions, enter into certain transactions with affiliated persons and to make certain investments. These covenants are subject to a number of exceptions and qualifications, including the suspension of certain of these covenants upon the 2022 Senior Notes receiving an investment grade credit rating. The Indenture does not require the Company to maintain any financial covenants.

The Company may redeem the 2022 Senior Notes at any time prior to July 15, 2018 at a price equal to 100% of the aggregate principal amount so redeemed, plus accrued and unpaid interest, if any, to the redemption date and a make-whole premium set forth in the Indenture. The Company may also redeem up to 35% of the aggregate principal amount of the 2022 Senior Notes with the net cash proceeds of certain equity offerings at any time and from time to time before July 15, 2018, at a redemption price equal to 105.250% of the aggregate principal amount so redeemed, plus accrued and unpaid interest, if any, to the redemption date. The Company also has the option to redeem the 2022 Senior Notes on or after: July 15, 2018 through July 14, 2019 at 102.625% of par; July 15, 2019 through July 14, 2020 at 101.313% of par; and July 15, 2020 and thereafter at 100% of par. In addition, if the Company undergoes a change of control, as provided in the Indenture, the Company will be required to make an offer to purchase each holder’s 2022 Senior Notes at a price equal to 101% of their principal amount, plus accrued and unpaid interest, if any, to the repurchase date.

F-30

The Company has evaluated the 2022 Senior Notes for derivatives pursuant to ASC 815 and did not identify any embedded derivatives that require bifurcation. All features were deemed to be clearly and closely related to the host instrument.

Convertible Notes

On December 10, 2007, the Company issued and sold $1.725 billion, at par, of 2.00% Convertible Senior Notes due December 15, 2037 (“2007 Notes”). On November 18, 2010, the Company entered into separate, privately-negotiated exchange agreements under which it retired $450.0 million in aggregate principal of its 2007 Notes for $450.0 million in aggregate principal of new 2.00% Convertible Exchange Senior Notes due December 15, 2037 (“2010 Notes”). On February 29, 2012, the Company entered into separate, privately-negotiated exchange agreements under which it retired $500.0 million in aggregate principal of the 2007 Notes for $500.0 million in aggregate principal of new 2.00% Convertible Senior Notes due March 1, 2042 (“2012 Notes”). On February 14, 2013, the Company entered into separate, privately-negotiated exchange agreements under which it retired $370.0 million in aggregate principal of the 2007 Notes for $370.0 million in aggregate principal of new 2.00% Convertible Senior Notes due December 15, 2043 (“2013 Notes”).

On November 14, 2013, the Company announced that it had issued a notice of redemption to the holders of its 2007 Notes to redeem any 2007 Notes outstanding on December 18, 2013 at a redemption price payable in cash equal to 100.00% of the principal amount of the 2007 Notes plus accrued and unpaid interest to, but not including, December 18, 2013. Holders of the 2007 Notes also had the option of putting the 2007 Notes to the Company as of December 13, 2013. The 2007 Notes were redeemed at their par value aggregating $405.0 million. Under ASC 470, the derecognition of the 2007 Notes did not result in a gain or loss as the fair value of the liability component of the 2007 Notes was determined to be equal to the consideration paid to redeem the 2007 Notes, and as a result, no value was allocated to the reacquisition of the conversion option.

The 2010 Notes, the 2012 Notes and the 2013 Notes are collectively referred to herein as the “Convertible Notes.”

Holders may require the Company to repurchase the Convertible Notes prior to maturity on the dates set forth below:

• the 2010 Notes on each of December 15, 2016, 2020 and 2025, December 13, 2030 and December 14, 2035;

• the 2012 Notes on each of March 1, 2018, 2022, 2027 and 2032 and March 2, 2037; and

• the 2013 Notes on each of December 15, 2017, 2022, 2027, 2032 and 2037.

Holders may also require the Company to repurchase the Convertible Notes upon a fundamental change, as defined in each of the applicable indentures. The Company may redeem all or a portion of the 2010 Notes at any time on or after December 19, 2016, all or a portion of the 2012 Notes at any time on or after March 6, 2018 and all or a portion of the 2013 Notes at any time on or after December 15, 2017. If, prior to maturity, a holder requires the Company to repurchase the Convertible Notes or the Company elects to redeem the Convertible Notes, the repurchase or redemption price of each Convertible Note will equal 100% of its principal amount, plus accrued and unpaid interest to, but excluding, the redemption or repurchase date, as applicable. On November 9, 2016, the Company announced that it would repurchase, on December 15, 2016, all of the outstanding 2010 Notes at a repurchase price payable in cash equal to 100% of the original principal amount of the 2010 Notes validly surrendered for repurchase and not withdrawn plus accrued and unpaid interest, if any, to, but not including, December 15, 2016, at the option of the holders of the 2010 Notes. The Company also announced on November 9, 2016, that it had elected to redeem, on December 19, 2016, all of the then outstanding 2010 Notes (those 2010 Notes not put to the Company on December 15, 2016 or validly submitted for conversion prior to December 16, 2016) at a redemption price payable in cash equal to 100% of the accreted principal amount of the 2010 Notes to be redeemed plus accrued and unpaid interest (including contingent interest, if any) to, but not including December 19, 2016.

It is the Company's current intent and policy to settle any conversion of the Convertible Notes as if the Company had elected to make either a net share settlement or all cash election, such that upon conversion, the Company intends to pay the holders in cash for the principal amount of the Convertible Notes and, if applicable shares of its common stock or cash to satisfy the premium based on a calculated daily conversion value. On November 9, 2016, the Company announced that it had made an irrevocable net share settlement election to settle any conversions of the 2010 Notes validly submitted on or after November 9, 2016 in cash.

The 2010, 2012, and 2013 Notes all bear interest at a rate of 2.00% per year on the principal amount, payable semi-annually in arrears in cash on June 15 and December 15, March 1 and September 1, and June 15 and December 15, respectively, of each year ending on December 15, 2016, March 1, 2018, and December 15, 2013, respectively. The 2013 Notes no longer bear interest payable at 2.00%. The 2010 Notes will accrete principal from December 15, 2016 at a rate that provides holders with an aggregate annual yield to maturity of 2.00% per year. The 2012 Notes will accrete principal from March 1, 2018 at a rate that provides holders with an aggregate annual yield to maturity of 2.00% per year. The 2013 Notes accrete principal from their date of issuance at a rate of 4.00% per year until and including December 15, 2017, and 2.00% per year thereafter. Beginning with the six month interest period commencing December 15, 2016, March 1, 2018 and December 15,

F-31

2017, the Company will pay contingent interest during any six month interest period to the holders of 2010, 2012 and 2013 Notes, respectively, if the “trading price”, as defined, of the 2010, 2012 and 2013 Notes for each of the five trading days ending on the second trading day immediately preceding the first day of the applicable six month interest period equals or exceeds 120% of the accreted principal amount of the 2010, 2012 and 2013 Notes. The holders of each of the 2010, 2012 or 2013 Notes may convert their respective Notes into shares of the Company’s common stock at a conversion price of approximately $23.03 per share, $31.175 per share and $38.59 per share, respectively, subject to adjustment, prior to the close of business on September 15, 2037, December 1, 2014 and September 15, 2043, respectively, subject to prior redemption or repurchase of the 2010, 2012, and 2013 Notes, respectively, under any of the following circumstances: (1) during any calendar quarter if the last reported sale price of the Company’s common stock exceeds 130% of the conversion price for at least 20 trading days in the 30 consecutive trading days ending on the last trading day of the preceding calendar quarter; (2) during the five business day period after any five consecutive trading day period in which the trading price per note for each day of such period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate on each such day; (3) if the notes have been called for redemption; or (4) upon the occurrence of specified corporate events. At the option of the holder, regardless of the foregoing circumstances, holders may convert their respective 2010, 2012 and 2013 Notes at any time on or after September 15, 2037, December 1, 2041 and September 15, 2043, respectively, through the close of business on the second scheduled trading day immediately preceding the maturity date. The conversion rate will not be adjusted for accrued interest or accreted principal in excess of the original $1,000 principal amount, as accrued interest and accreted principal will not be convertible into common stock. For both the 2012 and 2013 Notes none of these triggering events have occurred as of September 24, 2016.

During the fourth quarter of fiscal 2016, the closing price of the Company's common stock exceeded 130% of the applicable conversion price of its 2010 Notes on at least 20 of the last 30 consecutive trading days of the quarter and, on November 9, 2016, the Company announced that it had elected to redeem all of the then outstanding 2010 Notes on December 19, 2016. Therefore holders of the 2010 Notes are able to convert their notes during the first quarter of fiscal 2017. As such, the Company classified the $12.2 million carrying value of its 2010 Notes (which had a principal value of $12.3 million at September 24, 2016) as a current debt obligation. As of September 24, 2016, the if-converted value of the 2010 Notes exceeded the aggregate principal amount by approximately $7.9 million.

On various dates during the fourth quarter of fiscal 2016, the Company entered into privately negotiated repurchase transactions and extinguished $46.3 million principal amount of the 2010 Notes for total payments of $79.2 million. These amounts include the conversion premium resulting from the Company's stock price on the date of the transactions being in excess of the conversion price of $23.03 for the 2010 Notes. Under ASC 470, this transaction was accounted for as an extinguishment and derecognition of the 2010 Notes and resulted in a debt loss extinguishment of $0.8 million. In addition, $1.3 million principal was put to the Company during the quarter.

On various dates during the second quarter of fiscal 2016, the Company entered into privately negotiated repurchase transactions and extinguished $90.0 million and $136.6 million principal amount of the 2010 Notes and 2012 Notes, respectively, for total payments of $140.1 million and $171.3 million, respectively. These amounts include the conversion premium resulting from the Company's stock price on the date of the transactions being in excess of the conversion price of $23.03 and $31.175 for the 2010 Notes and 2012 Notes, respectively. Under ASC 470, these transactions were accounted for as an extinguishment and derecognition of the 2010 and 2012 Notes and resulted in an aggregate debt loss extinguishment of $4.5 million.

On various dates during the fourth quarter of fiscal 2015, the Company entered into privately negotiated repurchase transactions and extinguished $300.0 million principal of the 2010 Notes for a total payment of $543.7 million, which includes the conversion premium resulting from the Company's stock price on the date of the transaction being in excess of the conversion price of $23.03. Under ASC 470, this transaction was accounted for as an extinguishment and derecognition of the 2010 Notes and resulted in a debt loss extinguishment of $15.5 million.

In lieu of delivery of shares of the Company’s common stock in satisfaction of the Company’s obligation upon conversion of the Convertible Notes, the Company may elect to deliver cash or a combination of cash and shares of its common stock. If the Company elects to satisfy its conversion obligation in a combination of cash and shares of the Company’s common stock, the Company is required to deliver up to a specified dollar amount of cash per $1,000 original principal amount of Convertible Notes, and will settle the remainder of its conversion obligation in shares of its common stock, in each case based on the daily conversion value calculated as provided in the respective indentures for the Convertible Notes. This net share settlement election is in the Company’s sole discretion and does not require the consent of holders of the Convertible Notes. It is the Company’s current intent and policy to settle any conversion of the Convertible Notes as if the Company had elected to make the net share settlement election.

F-32

The Convertible Notes are the Company’s senior unsecured obligations and rank equally with all of its existing and future senior unsecured debt and prior to all future subordinated debt. The Convertible Notes are effectively subordinated to any future secured indebtedness to the extent of the collateral securing such indebtedness, and structurally subordinated to all indebtedness and other liabilities (including trade payables) of the Company’s subsidiaries.

Accounting for the Convertible Notes

The Convertible Notes have been recorded pursuant to FASB Staff Position (“FSP”) APB 14-1, Accounting for Convertible Debt Instruments That May Be Settled in Cash upon Conversion (Including Partial Cash Settlement) (FSP APB 14-1) (codified within ASC 470) since they can be settled in cash or partially in cash upon conversion. FSP APB 14-1 requires the liability and equity components of the convertible debt instrument to be separately accounted for in a manner that reflects the entity’s nonconvertible debt borrowing rate when interest expense is subsequently recognized. The excess of the debt’s principal amount over the amount allocated to the liability component is recognized as the value of the embedded conversion feature (“equity component”) within additional-paid-in capital in stockholders’ equity and amortized to interest expense over the expected life of the liability component (typically the date of the earliest redemption) using the effective interest method. The liability component is initially recorded at its fair value, which is calculated using a discounted cash flow technique. Key inputs used to estimate the fair value of the liability component included the Company’s estimated nonconvertible debt borrowing rate as of the measurement date (i.e., the date the Convertible Notes are issued), the amount and timing of cash flows, and the expected life of the Convertible Notes. The effective interest rate is estimated by comparing other companies’ debt issuances that had features similar to the Company’s debt excluding the conversion feature and who had similar credit ratings during the same annual period as the Company. In addition, third-party transaction costs are required to be allocated to the liability and equity components based on their relative values. The original issuance of the 2007 Notes and both exchange transactions for the 2010 Notes and 2012 Notes, which each included a derecognition and re-recognition, were accounted for under this accounting guidance.

The 2013 Notes exchange transaction was accounted for as a modification pursuant to ASC 470-50 and not an extinguishment because the terms of the two debt instruments were not substantially different. This determination was based on the fact that the present value of the cash flows on a creditor by creditor basis between the two debt instruments was less than 10% and the change in the fair value of the conversion option before and after the exchange transaction was less than 10%. As a result, there is no gain or loss from this exchange. As required, the Company recorded the increase in the fair value of the conversion option of $32.5 million from this exchange to additional paid-in-capital, net of deferred taxes. The Company determined the fair value of the conversion option for each debt instrument on the date of modification by calculating the fair value of each debt instrument using the binomial model and subtracting the fair value of the respective debt instrument’s liability component. The fair value of the liability component for each debt instrument was determined by using a discounted cash flow technique with an effective interest rate of 3.25% and 5.42% for the 2007 Notes and 2013 Notes, respectively. These rates represent the estimated nonconvertible borrowing rate with a maturity as of the measurement date consistent with the first put dates of each debt instrument. The difference between the debt’s fair value and the fair value of its liability component represents the value allocated to the debt’s conversion option. In addition, direct costs incurred for this exchange of $4.1 million were expensed as incurred within interest expense.

The Company accounted for the 2010 Notes and 2012 Notes extinguishments in fiscal 2016, discussed above, under the derecognition provisions of subtopic ASC 470-20-40, which requires the allocation of the fair value of the consideration transferred and transaction costs incurred to the extinguishment of the liability component and the reacquisition of the equity component. In connection with these transactions, the Company recorded a debt extinguishment loss on the 2010 Notes of $4.6 million and a debt extinguishment loss on the 2012 Notes of $0.7 million, for a total debt extinguishment loss of $5.3 million in fiscal 2016. The 2010 Notes debt extinguishment loss was comprised of the loss on the debt itself of $4.0 million, the write-off of the pro-rata amount of debt issuance costs of $0.4 million allocated to the notes retired, and allocated third party costs of $0.2 million. The 2012 Notes debt extinguishment loss was comprised of the write-off of the pro-rata amount of debt issuance costs of $0.5 million allocated to the notes retired, and allocated third party costs of $0.2 million. The loss on the debt itself was calculated as the difference between the fair value of the liability component immediately before the respective transactions and their related carrying values. The fair value of the liability component was calculated using a discounted cash flow technique, and the Company used effective interest rates of 2.71% for the 2010 Notes and 3.87% and 3.41% for the 2012 Notes, which had two valuation dates, representing the estimated rate for non-convertible debt (with similar features as the 2010 and 2012 Notes excluding the conversion feature) issued by a company with a credit rating similar to the Company. In addition, under this accounting standard, a portion of the fair value of the consideration transferred is allocated to the reacquisition of the equity component, which is the difference between the fair value of the consideration transferred and the fair value of the liability component immediately before the extinguishment. As a result, on a gross basis, $83.7 million related to the 2010 Notes and $38.9 million related to the 2012 Notes were allocated to the reacquisition of the equity component of the original instrument, which was recorded net of deferred taxes of $15.7 million and $12.5 million, respectively, within additional paid-in-capital.

F-33

The Company also accounted for the 2010 Notes extinguishment in fiscal 2015, discussed above, under the derecognition provisions of subtopic ASC 470-20-40. In connection with this transaction, the Company recorded a debt extinguishment loss of $15.5 million in the fourth quarter fiscal 2015. This debt extinguishment loss was comprised of the loss on the debt itself of $14.4 million, the write-off of the pro-rata amount of debt issuance costs of $0.7 million allocated to the notes retired, and allocated third party costs of $0.4 million. The fair value of the liability component was calculated using a discounted cash flow technique as described above, and the Company used an effective interest rate of 2.71% representing the estimated rate for non-convertible debt (with similar features as the 2010 Notes excluding the conversion feature) issued by a company with a credit rating similar to the Company. In addition, on a gross basis, $246.1 million was allocated to the reacquisition of the equity component of the original instrument, which was recorded net of deferred taxes of $29.2 million within additional paid-in-capital.

As of September 24, 2016 and September 26, 2015, the Convertible Notes and related equity components (recorded in additional paid-in-capital, net of deferred taxes) consisted of the following:

	2016			2015
2010 Notes principal amount	$	12.3		$	150.0
Unamortized discount and issuance costs (1)	(0.1		)	(8.2		)
Net carrying amount	$	12.2		$	141.8
Equity component, net of taxes	$	1.6		$	20.0
2012 Notes principal amount	$	363.4		$	500.0
Unamortized discount and issuance costs (1)	(9.5		)	(21.8		)
Net carrying amount	$	353.9		$	478.2
Equity component, net of taxes	$	35.8		$	49.2
2013 Notes principal amount	$	370.0		$	370.0
Principal accretion	57.1			40.5
Unamortized discount and issuance costs (1)	(17.5		)	(29.9		)
Net carrying amount	$	409.6		$	380.6
Equity component, net of taxes	$	131.5		$	131.5

(1) In connection with the adoption of ASU 2015-03, debt issuance costs are presented as direct deduction from the debt liability consistent with the presentation of a debt discount.

Interest expense under the Convertible Notes is as follows:

	Years Ended
	September 24, 2016		September 26, 2015		September 27, 2014
Amortization of debt discount	$	22.3	$	34.9	$	37.1
Amortization of deferred financing costs	1.1		1.7		1.9
Principal accretion	16.6		15.9		15.3
Non-cash interest expense	40.0		52.5		54.3
2.00% accrued interest (cash)	10.0		18.2		22.3
	$	50.0	$	70.7	$	76.6

If the Company fails to comply with the reporting obligations contained in the agreements for the Convertible Notes, the sole remedy of the holders of the Convertible Notes for the first 90 days following such event of default consists exclusively of the right to receive an extension fee in an amount equal to 0.25% of the accreted principal amount of the Convertible Notes. Based on its evaluation of the Convertible Notes in accordance with ASC 815, the Company determined that the Convertible Notes contain a single embedded derivative, comprising both the contingent interest feature and the filing failure penalty payment, requiring bifurcation as the features are not clearly and closely related to the host instrument. The Company has determined that the value of this embedded derivative was nominal as of September 24, 2016 and September 26, 2015.

As of September 24, 2016, upon conversion, including the potential premium that could be payable on a fundamental change (as defined), the Company would issue a maximum of approximately 29.6 million shares of common stock to the holders of the Convertible Notes.

F-34

Accounts Receivable Securitization Program

On April 25, 2016, the Company entered into a one-year $200.0 million accounts receivable securitization program (the "Securitization Program") with several of its wholly owned subsidiaries and certain financial institutions. Under the terms of the Securitization Program, the Company and certain of its wholly-owned subsidiaries sell their respective customer receivables to a bankruptcy remote special purpose entity, which is also a wholly-owned subsidiary of the Company. In addition, the Company also contributed a portion of its customer receivables to the special purpose entity in connection with its establishment. The Company retains servicing responsibility. The special purpose entity, as borrower, and the Company, as servicer, have entered into a Credit and Security Agreement with several lenders pursuant to which the special purpose entity may borrow up to $200.0 million from the lenders, with the loans secured by the receivables. The amount that the special purpose entity may borrow at a given point in time is determined based on the amount of qualifying receivables that are present in the special purpose entity at such point in time. The entire amount available was borrowed in the third quarter of fiscal 2016. Borrowings outstanding under the Securitization Program bear interest at LIBOR plus the applicable margin of 0.7% and are included as a component of current liabilities in the Company's consolidated balance sheet, while the accounts receivable securing these obligations remain as a component of net receivables in the Company's consolidated balance sheet. The Company and the special purpose entity are operated and maintained as separate legal entities. The assets of the special purpose entity secure the amounts borrowed and cannot be used to pay other debts or liabilities of the Company. The special purpose entity is not a guarantor under the Company's Credit Agreement and is not a guarantor of the Company's 2022 Senior Notes.

Borrowings under the Securitization Program for fiscal 2016 had a weighted-average interest rate of 1.17%. Interest expense under the Securitization Program aggregated $1.0 million for fiscal 2016. The interest rate on the amounts outstanding at September 24, 2016 was 1.22%.

The Credit and Security Agreement contains customary representations and warranties and events of default, including payment defaults, breach of representations and warranties, covenant defaults, and an event of default upon a change of control of the Company. In addition, it contains financial covenants consistent with that of the Credit Agreement. As of September 24, 2016, the Company was in compliance with the Credit and Security Agreement covenants.

5. Fair Value Measurements

The Company applies the provisions of ASC 820 for its financial assets and liabilities that are re-measured and reported at fair value each reporting period and its nonfinancial assets and liabilities that are re-measured and reported at fair value on a non-recurring basis. Fair value is the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining fair value, the Company considers the principal or most advantageous market in which it would transact and considers assumptions that market participants would use when pricing the asset or liability.

Fair Value Hierarchy

ASC 820 establishes a three-level valuation hierarchy for disclosure of fair value measurements. Financial assets and liabilities are categorized within the valuation hierarchy based upon the lowest level of input that is significant to the measurement of fair value. The three levels of the hierarchy are defined as follows:

• Level 1—Inputs to the valuation methodology are quoted market prices for identical assets or liabilities.

• Level 2—Inputs to the valuation methodology are other observable inputs, including quoted market prices for similar assets or liabilities and market-corroborated inputs.

• Level 3—Inputs to the valuation methodology are unobservable inputs based on management’s best estimate of inputs market participants would use in pricing the asset or liability at the measurement date, including assumptions about risk.

Assets/Liabilities Measured and Recorded at Fair Value on a Recurring Basis

The Company has investments in publicly-traded companies, which are valued using quoted market prices, representing Level 1 assets, and investments in derivative instruments comprised of interest rate caps and forward foreign currency contracts, which are valued using analyses obtained from independent third party valuation specialists based on market observable inputs, representing Level 2 assets. The fair values of the Company's interest rate caps and forward foreign currency contracts represent the estimated amounts the Company would receive or pay to terminate the contracts. Refer to Note 2 for further discussion and information on the equity investments, the interest rate caps and forward foreign currency contracts.

The Company has a payment obligation to the participants under its Nonqualified Deferred Compensation Plan (“DCP”). This liability is recorded at fair value based on the underlying value of certain hypothetical investments under the DCP as designated by each participant for their benefit. Since the value of the DCP obligation is based on market prices, the liability is

F-35

classified within Level 1.

Assets and liabilities measured and recorded at fair value on a recurring basis consisted of the following:

			Fair Value Measurements at September 24, 2016
	Carrying Value		Quoted Prices in Active Market for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Equity securities	$	1.0	$	1.0	$	—	$	—
Interest rate caps - derivative	1.4		—		1.4		—
Forward foreign currency contracts	0.2		—		0.2		—
Total	$	2.6	$	1.0	$	1.6	$	—
Liabilities:
Deferred compensation liabilities	$	37.0	$	37.0	$	—	$	—
Forward foreign currency contracts	1.3		—		1.3		—
Total	$	38.3	$	37.0	$	1.3	$	—

			Fair Value Measurements at September 26, 2015
	Carrying Value		Quoted Prices in Active Market for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Marketable securities:
Equity securities	$	15.2	$	15.2	$	—	$	—
Mutual funds	5.6		5.6		—		—
Interest rate cap- derivative	6.9		—		6.9		—
Total	$	27.7	$	20.8	$	6.9	$	—
Liabilities:
Deferred compensation liabilities	$	29.4	$	29.4	$	—	$	—
Total	$	29.4	$	29.4	$	—	$	—

There were no Level 3 assets or liabilities outstanding during fiscal 2016 and 2015. Changes in the fair value of recurring fair value measurements using significant unobservable inputs (Level 3), which solely consisted of contingent consideration liabilities, during the year ended September 27, 2014 were as follows:

	2014
Balance at beginning of period	$	3.8
Payments / Accruals	(3.8		)
Balance at end of period	$	—

Assets Measured and Recorded at Fair Value on a Nonrecurring Basis

The Company remeasures the fair value of certain assets and liabilities upon the occurrence of certain events. Such assets are comprised of cost-method equity investments and long-lived assets, including property, plant and equipment, intangible assets and goodwill.

In the fourth quarter of fiscal 2014, the Company recorded a $5.1 million impairment charge within its Diagnostics segment to record its remaining IPR&D assets at fair value. This adjustment falls within Level 3 of the fair value hierarchy.

In the second quarter of fiscal 2014, the Company recorded an impairment charge of $28.6 million within its Breast Health segment, which was comprised of $27.1 million for intangible assets and $1.5 million for property and equipment. This adjustment falls within Level 3 of the fair value hierarchy.

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In the first quarter of fiscal 2014, the Company recorded a $3.1 million impairment charge to record certain of its buildings at fair value related to the shutdown of its Hitec Imaging organic photoconductor manufacturing line. This adjustment falls within Level 3 of the fair value hierarchy.

The Company holds certain cost-method equity investments in non-publicly traded securities aggregating $3.5 million and $4.2 million at September 24, 2016 and September 26, 2015, respectively, which are included in other long-term assets on the Company’s Consolidated Balance Sheets. These investments are generally carried at cost, less any write-downs for other-than-temporary impairment charges. To determine the fair value of these investments, the Company uses all available financial information related to the entities, including information based on recent or pending third-party equity investments in these entities. In certain instances, a cost method investment’s fair value is not estimated as there are no identified events or changes in circumstances that may have a significant adverse effect on the fair value of the investment and to do so would be impractical. During fiscal 2014, the Company recorded other-than-temporary impairment charges of $6.9 million related to its cost-method equity investments to adjust their carrying amounts to fair value.

The following chart depicts certain assets presented at fair value using level 3 inputs under the fair value hierarchy measured on a nonrecurring basis for which the Company has recorded impairment charges:

			Fair Value Measurements Using
	Fair Value		Quoted Prices in Active Market for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)	Significant Unobservable Inputs (Level 3)		Total Losses
Fiscal 2014:
Intangible assets	$	36.2	—	—	$	36.2	$	(32.2	)
Property and equipment	1.0		—	—	1.0		(1.5		)
Buildings	1.4		—	—	1.4		(3.1		)
Cost-method equity investments	0.8		—	—	0.8		(6.9		)
							$	(43.7	)

The above fair value amounts represent only those individual assets remeasured and not the consolidated balances. Refer to Note 4 for disclosure of the nonrecurring fair value measurement related to the debt extinguishment losses recorded in fiscal 2016, 2015 and 2014.

Disclosure of Fair Value of Financial Instruments

The Company’s financial instruments mainly consist of cash and cash equivalents, accounts receivable, marketable securities, cost-method equity investments, interest rate caps, forward foreign currency contracts, insurance contracts, DCP liability, accounts payable and debt obligations. The carrying amounts of the Company’s cash and cash equivalents, accounts receivable and accounts payable approximate their fair value due to the short-term nature of these instruments. The Company’s marketable securities, interest rate caps, and forward foreign currency contracts are recorded at fair value. The carrying amount of the insurance contracts are recorded at the cash surrender value, as required by U.S. GAAP, which approximates fair value, and the related DCP liability is recorded at fair value. The Company believes the carrying amounts of its cost-method equity investments approximate fair value.

Amounts outstanding under the Company’s Credit Agreement and Securitization Program of $1.41 billion and $200.0 million aggregate principal, respectively, as of September 24, 2016 are subject to variable rates of interest based on current market rates, and as such, the Company believes the carrying amount of these obligations approximates fair value. The Company’s 2022 Senior Notes had a fair value of approximately $1.06 billion and $1.03 billion as of September 24, 2016 and September 26, 2015, respectively, based on their trading price, representing a Level 1 measurement. The fair value of the Company’s Convertible Notes is based on the trading prices of the respective notes and represents a Level 1 measurement. Refer to Note 4 for the carrying amounts of the various components of the Company’s debt.

F-37

The estimated fair values of the Company’s Convertible Notes at September 24, 2016 and September 26, 2015 are as follows:

	2016		2015
2010 Notes	20.2		264.1
2012 Notes	481.9		688.2
2013 Notes	458.8		471.8
	$	960.9	$	1,424.1

6. Income Taxes

The Company’s income before income taxes consisted of the following:

	Years ended
	September 24, 2016		September 26, 2015		September 27, 2014
Domestic	$	310.7	$	158.3	$	95.1
Foreign	104.6		18.9		(47.0		)
	$	415.3	$	177.2	$	48.1

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The provision for income taxes contained the following components:

	Years ended
	September 24, 2016			September 26, 2015			September 27, 2014
Federal:
Current	$	209.0		$	185.2		$	242.2
Deferred	(122.7		)	(137.0		)	(212.5		)
	86.3			48.2			29.7
State:
Current	16.6			3.5			22.1
Deferred	(22.7		)	(11.0		)	(24.7		)
	(6.1		)	(7.5		)	(2.6		)
Foreign:
Current	14.7			5.7			9.6
Deferred	(10.4		)	(0.8		)	(5.9		)
	4.3			4.9			3.7
	$	84.5		$	45.6		$	30.8

The income tax provision differed from the tax provision computed at the U.S. federal statutory rate due to the following:

	Years ended
	September 24, 2016		September 26, 2015		September 27, 2014
Income tax provision at federal statutory rate	35.0	%	35.0	%	35.0	%
Increase (decrease) in tax resulting from:
Domestic production activities deduction	(5.0	)	(10.1	)	(30.6	)
State income taxes, net of federal benefit	2.0		1.2		4.3
Tax credits	(3.2	)	(3.8	)	(5.2	)
Unrecognized tax benefits	2.4		(1.8	)	2.5
Cumulative translation adjustment write-off	—		1.9		—
Non-deductible compensation	0.1		1.9		5.5
Foreign rate differential	(6.1	)	(1.6	)	10.7
Change in state deferred tax rate	(1.8	)	—		—
Change in valuation allowance	(3.4	)	1.0		35.4
Other	0.3		2.1		6.3
	20.3	%	25.8	%	63.9	%

The Company's effective tax rate in fiscal 2016 was lower than the statutory rate primarily due to earnings in jurisdictions subject to lower tax rates, the domestic production activities deduction benefit, and a change in the valuation allowance related to the sale of a marketable security with a higher tax than book basis.

The Company's effective tax rate in fiscal 2015 was lower than the statutory rate primarily due to the domestic production activities deduction benefit.

The Company’s effective tax rate in fiscal 2014 was higher than the statutory rate primarily due to unbenefited foreign losses partially offset by the domestic production activities deduction benefit.

The Company uses the asset and liability method to account for income taxes in accordance with ASC 740, Income Taxes. Under this method, deferred income taxes are recognized for the future tax consequences of differences between the tax and financial accounting bases of assets and liabilities at each reporting period. Deferred income taxes are based on enacted tax laws and statutory tax rates applicable to the period in which these differences are expected to affect taxable income. A valuation allowance is established when necessary to reduce deferred tax assets to the amounts expected to be realized.

In November 2015, the FASB issued ASU No. 2015-17, Balance Sheet Classification of Deferred Taxes. ASU 2015-17 simplifies the presentation of deferred income taxes by eliminating the requirement for entities to separate deferred income tax liabilities and assets into current and noncurrent amounts in the balance sheet. Rather, it requires deferred tax assets and

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liabilities to be classified as noncurrent in the balance sheet. The Company adopted this standard prospectively in the first quarter of fiscal 2016, and prior periods were not retrospectively adjusted.

The Company’s significant deferred tax assets and liabilities were as follows:

	September 24, 2016			September 26, 2015
Deferred tax assets
Net operating loss carryforwards	$	40.0		$	45.4
Capital losses	19.1			25.7
Non-deductible accruals	21.1			16.3
Non-deductible reserves	31.1			26.8
Stock-based compensation	34.8			24.3
Research and other credits	10.7			14.5
Nonqualified deferred compensation plan	14.1			11.3
Other temporary differences	9.2			10.2
	180.1			174.5
Less: valuation allowance	(46.2		)	(60.9		)
	$	133.9		$	113.6
Deferred tax liabilities
Depreciation and amortization	$	(1,030.8	)	$	(1,171.5	)
Debt discounts and deferrals	(75.1		)	(100.1		)
Debt issuance costs	(1.3		)	(1.4		)
	$	(1,107.2	)	$	(1,273.0	)
	$	(973.3	)	$	(1,159.4	)

Under ASC 740, the Company can only recognize a deferred tax asset for the future benefit to the extent that it is “more likely than not” that these assets will be realized. After considering all available positive and negative evidence, the Company established a valuation allowance against specifically identified deferred tax assets because it is more-likely-than-not that these assets will not be realized. In making this determination, the Company considered numerous factors including historical profitability, estimated future taxable income and the character of such income. The valuation allowance decreased$14.7 million in fiscal 2016 from fiscal 2015 primarily due to a change in the valuation allowance related to the sale of a marketable security with a higher tax than book basis, foreign exchange rate fluctuations, and a change in judgment regarding the realizability of foreign net operating losses.

At September 24, 2016, the Company had $13.9 million, $63.9 million and $45.0 million in gross federal, state, and foreign net operating losses, respectively, and $0.3 million, $13.7 million and $1.6 million in federal, state, and foreign credit carryforwards, respectively. These losses and credits expire between 2017 and 2036, except for $44.6 million in losses and $8.9 million in credits that have unlimited carryforward periods. The federal, state, and foreign net operating losses exclude $4.5 million, $151.3 million and $46.5 million, respectively, in net operating losses, that the Company expects will expire unutilized.

At September 24, 2016, the Company had $163.6 million in gross unrecognized tax benefits excluding interest, of which $80.1 million, if recognized, would reduce the Company's effective tax rate. At September 26, 2015, the Company had $154.7 million in gross unrecognized tax benefits excluding interest, of which $74.9 million, if recognized, would have reduced the Company's effective tax rate. In the next twelve months it is reasonably possible that the Company will reduce its gross unrecognized tax benefits by up to $1.0 million due to expiring statutes of limitations.

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The Company’s unrecognized income tax benefits activity for fiscal 2016 and 2015 was as follows:

	2016			2015
Balance at beginning of fiscal year	$	154.7		$	137.0
Tax positions related to current year:
Additions	23.9			11.0
Reductions	—			—
Tax positions related to prior years:
Additions related to change in estimate	1.1			21.1
Reductions	(6.9		)	(10.3		)
Payments	(6.0		)	(0.8		)
Lapses in statutes of limitations and settlements	(3.2		)	(3.7		)
Acquired tax positions:
Additions related to reserves acquired from acquisitions	—			0.4
Balance as of the end of the fiscal year	$	163.6		$	154.7

The Company’s policy is to include accrued interest and penalties related to unrecognized tax benefits and income tax liabilities, when applicable, in income tax expense. As of September 24, 2016 and September 26, 2015, gross accrued interest was $13.1 million and $9.9 million, respectively. At September 24, 2016, no significant penalties have been accrued.

The Company and its subsidiaries are subject to various federal, state, and foreign income taxes. The Company’s U.S. Federal income tax returns are no longer subject to examination prior to fiscal 2011. State income tax returns are generally no longer subject to examination prior to fiscal year 2012. The Internal Revenue Service concluded its fiscal 2011 federal income tax return examination and commenced its fiscal 2013 and 2014 federal income tax examination in fiscal 2016. The Company is also undergoing tax examinations in Germany for fiscal 2011 through 2014. Massachusetts began a state tax examination for fiscal 2012 through 2013 in fiscal 2016.

The Company intends to reinvest, indefinitely, approximately $187.6 million in unremitted foreign earnings. It is not practicable to estimate the additional taxes that may be payable upon repatriation.

7. Stockholders' Equity and Stock-Based Compensation

Stock Repurchase Program

On November 11, 2013, the Company announced that its Board of Directors authorized the repurchase of up to $250 million of the Company’s outstanding common stock over a three-year period. Under the stock repurchase program, the Company is authorized to repurchase, from time-to-time, shares of its outstanding common stock on the open market or in privately negotiated transactions in the United States. During fiscal 2016, the Company repurchased 7.3 million shares of its common stock for total consideration of $250.0 million. This share repurchase authorization is now fully utilized.

On June 21, 2016, the Company's Board of Directors authorized the repurchase of up to an additional $500.0 million of the Company's outstanding common stock over the next five years. There were no repurchases of common stock made under this authorization during fiscal 2016.

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Stock-Based Compensation

Equity Compensation Plans

The Company has one share-based compensation plan pursuant to which awards are currently being made—the 2008 amended and restated Equity Incentive Plan (“2008 Equity Plan”). The purpose of the 2008 Equity Plan is to provide stock options, restricted stock units and other equity interests in the Company to employees, officers, directors, consultants and advisors of the Company and any other person who is determined by the Board of Directors to have made (or is expected to make) contributions to the Company. The 2008 Equity Plan is administered by the Board of Directors of the Company, and a total of 31.5 million shares were reserved for issuance under this plan. As of September 24, 2016, the Company had 8.3 million shares available for future grant under the 2008 Equity Plan.

The following presents stock-based compensation expense in the Company’s Consolidated Statements of Operations in fiscal 2016, 2015 and 2014:

	2016		2015		2014
Cost of revenues	$	10.5	$	8.7	$	7.3
Research and development	10.8		8.6		8.4
Selling and marketing	10.9		8.8		8.2
General and administrative	32.8		29.1		19.5
Restructuring and divestiture	0.4		4.1		6.6
	$	65.4	$	59.3	$	50.0

Grant-Date Fair Value

The Company uses a binomial model to determine the fair value of its stock options. The Company considers a number of factors to determine the fair value of options including the assistance of an outside valuation adviser. Information pertaining to stock options granted during fiscal 2016, 2015 and 2014 and related assumptions are noted in the following table:

	Years ended
	September 24, 2016			September 26, 2015			September 27, 2014
Options granted (in millions)	1.1			1.3			2.4
Weighted-average exercise price	$	39.32		$	27.68		$	22.01
Weighted-average grant date fair value	$	12.91		$	9.95		$	7.67
Assumptions:
Risk-free interest rates	1.6		%	1.7		%	1.2		%
Expected life (in years)	4.7			5.3			4.4
Expected volatility	37.8		%	38.6		%	41.4		%
Dividend yield	—			—			—

The risk-free interest rate is based on a treasury instrument whose term is consistent with the expected life of the stock options. In projecting expected stock price volatility, the Company uses a combination of historical stock price volatility and implied volatility from observable market prices of similar equity instruments. The Company estimated the expected life of stock options based on historical experience using employee exercise and option expiration data.

In connection with appointing Stephen P. MacMillan as its new President and Chief Executive Officer in December 2013, the Company granted approximately 0.1 million market stock units ("MSUs"). The MSUs vest in three separate tranches in an amount of 1/3rd of the total amount of the award based on the Company’s stock price meeting certain defined average stock prices for 30 consecutive trading days. These MSUs were valued at an average of $18.65 per share using the Monte Carlo simulation model and each tranche had its own derived service period. The Company recognized compensation expense under the accelerated method as prescribed by ASC 718 in fiscal 2014 through a portion of fiscal 2015, and all tranches have vested due to the defined average stock prices being met for the required period. In addition, per the terms of his employment agreement, the Company granted 0.2 million restricted stock units ("RSUs") to match Mr. MacMillan’s purchase of 0.2 million shares of the Company’s common stock on the open market in the second quarter of fiscal 2014. The RSUs cliff vest three years from the date of grant, and the Company is accounting for this grant as a liability award pursuant to ASC 718 because this RSU award contains an additional vesting condition (the requirement that Mr. MacMillan retain the matching shares during the vesting period) that is not service, performance or market based. As such, this award is marked-to-market at each reporting period, and at September 24, 2016, $7.8 million has been recorded as a liability for this award.

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Stock-Based Compensation Expense Attribution

The Company uses the straight-line attribution method to recognize stock-based compensation expense for stock options and RSUs. The vesting term of stock options is generally four or five years with annual vesting of 25% and 20% per year, respectively, on the anniversary of the grant date, and RSUs generally vest over three or four years with annual vesting at 33% and 25% per year, respectively, on the anniversary of the grant date. Effective in the fourth quarter of fiscal 2016, the Company implemented a retirement provision providing for the continued vesting of equity awards granted after November 6, 2015 once an employee meets certain age and years of service criteria and retires from the Company. This provision from an accounting perspective can result in a shorter requisite service period for certain employees, resulting in accelerated stock-based compensation expense. Since this provision affected previously granted awards, it was accounted for as a modification and the Company recognized an additional $4.0 million of expense in the fourth quarter of fiscal 2016.

The amount of stock-based compensation recognized during a period is based on the value of the portion of the awards that are ultimately expected to vest. ASC 718 requires forfeitures to be estimated at the time granted and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Based on an analysis of historical forfeitures, the Company has determined a specific forfeiture rate for certain employee groups and has applied forfeiture rates ranging from 0% to 7.0% as of September 24, 2016 depending on the specific employee group. This analysis is re-evaluated annually and the forfeiture rate will be adjusted as necessary. Ultimately, the actual stock-based compensation expense recognized will only be for those stock options and RSUs that vest.

Stock-based compensation expense related to stock options was $10.9 million, $12.2 million, and $16.3 million in fiscal 2016, 2015 and 2014, respectively. Stock compensation expense related to stock units, including RSUs, performance stock units ("PSUs") and MSUs, was $50.5 million, $43.7 million, and $30.6 million in fiscal 2016, 2015 and 2014, respectively. The related tax benefit recorded in the Consolidated Statements of Operations was $23.1 million, $17.7 million and $15.3 million in fiscal 2016, 2015 and 2014, respectively. Included within stock-based compensation expense in fiscal 2016, 2015 and 2014 is $0.4 million, $4.1 million and $6.6 million, respectively, related to modification accounting, the acceleration of vesting of certain retention RSUs provided under their original terms upon termination, and the acceleration of vesting for certain options assumed in the Gen-Probe acquisition related to employees who were terminated in connection with the Company’s restructuring action to consolidate its Diagnostics operations. The original terms of the stock options assumed in the Gen-Probe acquisition provided for acceleration upon a change-in-control and termination within 18 months of the change-in-control. At September 24, 2016, there was $21.2 million and $66.6 million of unrecognized compensation expense related to stock options and RSUs, respectively, to be recognized over a weighted average period of 2.8 years and 2.0 years, respectively.

Share Based Payment Activity

The following table summarizes all stock option activity under the Company’s stock option plans for the year ended September 24, 2016:

	Number of Shares (in millions)		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (in Years)	Aggregate Intrinsic Value (in millions)
Options outstanding at September 26, 2015	6.7		$	22.21	4.9	$	119.1
Granted	1.1		39.32
Canceled/ forfeited	(0.5	)	27.00
Exercised	(1.2	)	19.55			$	21.6
Options outstanding at September 24, 2016	6.1		$	25.37	4.9	$	80.1
Options exercisable at September 24, 2016	3.0		$	21.95	3.1	$	48.8
Options vested and expected to vest at September 24, 2016 (1)	5.9		$	25.32	4.9	$	79.0

(1) This represents the number of vested stock options as of September 24, 2016 plus the unvested outstanding options at September 24, 2016 expected to vest in the future, adjusted for estimated forfeitures.

During fiscal 2015 and 2014, the total intrinsic value of options exercised (i.e., the difference between the market price on the date of exercise and the price paid by the employee to exercise the options) was $42.0 million and $34.7 million, respectively.

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A summary of the Company’s RSU activity during the year ended September 24, 2016 is presented below:

Non-vested Shares	Number of Shares (in millions)		Weighted-Average Grant-Date  Fair Value
Non-vested at September 26, 2015	3.7		$	24.54
Granted	1.0		39.38
Vested	(1.2	)	22.96
Forfeited	(0.4	)	25.74
Non-vested at September 24, 2016	3.1		$	29.98

The number of RSUs vested includes shares withheld on behalf of employees to satisfy minimum statutory tax withholding requirements. The Company pays the minimum statutory tax withholding requirement on behalf of its employees. During fiscal 2016, 2015 and 2014 the total fair value of RSUs vested was $28.4 million, $27.2 million and $22.6 million, respectively.

The Company also granted approximately 0.2 million and 0.3 million PSUs during fiscal 2016 and 2015, respectively, to members of its senior management team, which have a weighted-average grant date fair value of $39.72 and $26.58, respectively. Each recipient of the PSUs is eligible to receive between zero and 200% of the target number of shares of the Company’s common stock at the end of three years provided the Company’s defined Return on Invested Capital metrics are achieved. The Company is recognizing compensation expense ratably over the required service period based on its estimate of the number of shares will vest upon achieving the measurement criteria. If there is a change in the estimate of the number of shares that are probable of vesting, the Company will cumulatively adjust compensation expense in the period that the change in estimate is made.

Employee Stock Purchase Plan

In March 2012, the Company’s stockholders approved the Hologic, Inc. 2012 Employee Stock Purchase Plan (“2012 ESPP”), which provides for the granting of up to 2.5 million shares of the Company’s common stock to eligible employees. The 2012 ESPP plan period is semi-annual and allows participants to purchase the Company’s common stock at 85% of the lower of (i) the market value per share of the common stock on the first day of the offering period or (ii) the market value per share of the common stock on the purchase date. The first plan period began on July 1, 2012. Stock-based compensation expense in fiscal 2016, 2015 and 2014 was $4.0 million, $3.4 million and $3.1 million, respectively.

The Company uses the Black-Scholes model to estimate the fair value of shares to be issued as of the grant date using the following weighted average assumptions:

	September 24, 2016		September 26, 2015		September 27, 2014
Assumptions:
Risk-free interest rates	0.34	%	0.10	%	0.08	%
Expected life (in years)	0.5		0.5		0.5
Expected volatility	27.2	%	27.4	%	30.0	%
Dividend yield	—		—		—

8. Profit Sharing 401(k) Plan

The Company has a qualified profit sharing plan covering substantially all of its employees. The Company made contributions of $16.2 million, $14.4 million and $13.3 million for fiscal 2016, 2015 and 2014, respectively.

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9. Deferred Compensation Plans

Nonqualified Deferred Compensation Plan

Effective March 15, 2006, the Company adopted its DCP to provide non-qualified retirement benefits to a select group of executive officers, senior management and highly compensated employees of the Company. Eligible employees may elect to contribute up to 75% of their annual base salary and 100% of their annual bonus to the DCP and such employee contributions are 100% vested. In addition, the Company may elect to make annual discretionary contributions on behalf of participants in the DCP. Each Company contribution is subject to a three-year vesting schedule, such that each contribution vests one third annually. Employee contributions are recorded within accrued expenses.

Upon enrollment into the DCP, employees make investment elections for both their voluntary contributions and discretionary contributions, if any, made by the Company. Earnings and losses on contributions based on these investment elections are recorded as a component of compensation expense in the period earned.

Annually, the Compensation Committee of the Board of Directors has approved a discretionary cash contribution to the DCP for each year. Discretionary contributions by the Company to the DCP are held in a Rabbi Trust. The Company is recording compensation expense for the DCP discretionary contributions ratably over the three-year vesting period of each annual contribution, unless the participant meets the plan retirement provision of reaching a certain age and years of service criteria in which case the expense is accelerated to match the required service period to receive such benefit. Under the DCP, the Company recorded compensation expense of $3.1 million, $1.8 million and $3.7 million in fiscal 2016, 2015 and 2014, respectively. The full amount of the discretionary contribution, net of forfeitures, along with employee deferrals is recorded within accrued expenses and totaled $37.0 million and $29.4 million at September 24, 2016 and September 26, 2015, respectively.

The Company has purchased Company-owned group life insurance contracts, in which both voluntary and discretionary Company DCP contributions are invested, to partially fund payment of the Company’s obligation to the DCP participants. The total amount invested at September 24, 2016 and September 26, 2015 was $36.0 million and $27.5 million, respectively. The values of these life insurance contracts are recorded in other long-term assets. Changes in the cash surrender value of life insurance contracts, which were not significant in fiscal 2016, 2015 and 2014, are recorded within other income (expense), net. In fiscal 2015, the Company had an additional $5.6 million of investments in mutual funds to fund the DCP which were sold in fiscal 2016 and replaced with life insurance contracts.

Deferred Equity Plan

Effective September 17, 2015, the Company adopted the Hologic, Inc. Deferred Equity Plan (the “DEP”). The DEP is designed to allow executives and non-employee Directors to accumulate Company stock in a tax-efficient manner to meet their long-term equity accumulation goals and shareholder ownership guidelines. Under the DEP, eligible participants may elect to defer the settlement of RSUs and PSUs granted under the 2008 Equity Plan until separation from service or separation from service plus a fixed number of years. Participants may defer settlement by vesting tranche. Although the equity will vest on schedule, if deferral of settlement is elected, no shares will be issued until the settlement date. The settlement date will be the earlier of death, disability, change in control of the Company or separation from service plus the number of years of deferral elected by the participant. While these shares upon vesting are not distributed to the individuals and are not outstanding, these shares will be included in basic weighted average shares outstanding used to calculate earnings per share.

10. Commitments and Contingencies

Finance Lease Obligations

The Company has two non-cancelable lease agreements for buildings that are primarily used for manufacturing. The Company was responsible for a significant portion of the construction costs, and in accordance with ASC 840, Leases, Subsection 40-15-5, the Company was deemed to be the owner of the respective buildings during the construction period. At the completion of the construction period, the Company reviewed the lease for potential sale-leaseback treatment in accordance with ASC 840, Subsection 40, Sale-Leaseback Transactions. Based on its analysis, the Company determined that the lease did not qualify for sale-leaseback treatment. Therefore, the building, leasehold improvements and associated liabilities remain on the Company’s financial statements throughout the lease term, and the building and leasehold improvements are being depreciated on a straight line basis over their estimated useful lives of 35 years. The Company recorded the fair market value of the buildings and land aggregating $28.3 million within property and equipment on its Consolidated Balance Sheets. Depreciation expense related to the buildings and land is recorded within depreciation in the Company's Consolidated Statements of Cash Flows. During fiscal 2016, the Company executed an amendment to one of the leases extending the term to 2024, and a renewal option was removed. There were no other significant provisions to the terms of the lease agreement. At September 24, 2016, the Company has recorded $2.9 million in accrued expenses and $34.8 million in other long-term

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liabilities related to these obligations. The current term of the leases is for a period of approximately 10 and 8 years, respectively, with the option to extend for one lease for two consecutive 5-year terms and the other for one5-year term.

Future minimum lease payments, including principal and interest, under these leases were as follows at September 24, 2016:

Fiscal 2017	$	3.1
Fiscal 2018	2.9
Fiscal 2019	1.2
Fiscal 2020	1.2
Fiscal 2021	1.2
Thereafter	2.8
Total minimum payments	12.4
Less-amount representing interest	(3.9		)
Total	$	8.5

Non-cancelable Purchase and Royalty Commitments

The Company has certain non-cancelable purchase obligations primarily related to inventory purchases and diagnostics instruments, primarily the Tigris and Panther systems, and to a lesser extent other operating expense commitments. These obligations are not recorded in the Consolidated Balance Sheets. For reasons of quality assurance, sole source availability or cost effectiveness, certain key components and raw materials and instruments are available only from a sole supplier and the Company has certain long-term supply contracts to assure continuity of supply. At September 24, 2016, purchase commitments are as follows:

Fiscal 2017	$	58.5
Fiscal 2018	15.6
Fiscal 2019	13.0
Total	$	87.1

In connection with its R&D efforts, the Company has various license agreements with unrelated parties that provide the Company with rights to develop and market products using certain technology and patent rights. Terms of the various license agreements require the Company to pay royalties ranging from less than 1% up to 35% of future sales on products using the specified technology. Such agreements generally provide for a term that commences upon execution and continues until expiration of the last patent covering the licensed technology. Under certain of these agreements, the Company is required to pay minimum annual royalty payments regardless of the level of sales. In addition, the Company has commitments for minimum payments under certain collaboration agreements. At September 24, 2016, minimum commitments for these agreements are as follows:

Fiscal 2017	$	0.7
Fiscal 2018	0.7
Fiscal 2019	0.5
Fiscal 2020	0.5
Fiscal 2021	0.5
Thereafter	2.7
Total	$	5.6

Concentration of Suppliers

The Company purchases certain components of its products from a single or small number of suppliers. A change in or loss of these suppliers could cause a delay in filling customer orders and a possible loss of sales, which could adversely affect results of operations; however, management believes that suitable replacement suppliers could be obtained in such an event.

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Operating Leases

The Company conducts its operations in leased facilities under operating lease agreements that expire through fiscal 2035. Substantially all of the Company’s lease agreements require the Company to maintain the facilities during the term of the lease and to pay all taxes, insurance, utilities and other costs associated with those facilities. The Company makes customary representations and warranties and agrees to certain financial covenants and indemnities. In the event the Company defaults on a lease, typically the landlord may terminate the lease, accelerate payments and collect liquidated damages. As of September 24, 2016, the Company was not in default of any covenants contained in its lease agreements. Certain of the Company’s lease agreements provide for renewal options. Such renewal options are at rates similar to the current rates under the agreements.

Future minimum lease payments under all of the Company’s operating leases at September 24, 2016 are as follows:

Fiscal 2017	$	17.3
Fiscal 2018	15.5
Fiscal 2019	10.5
Fiscal 2020	8.3
Fiscal 2021	6.6
Thereafter	14.3
Total	$	72.5

Rent expense, net of sublease income from these locations, was $17.9 million, $19.2 million, and $21.1 million for fiscal 2016, 2015 and 2014, respectively.

The Company subleases a portion of a building it owns and some of its facilities and has received aggregate rental income of $2.4 million, $2.0 million and $1.8 million in fiscal 2016, 2015 and 2014, respectively, which has been recorded as an offset to rent expense. The future minimum annual rental income payments under these sublease agreements at September 24, 2016 are as follows:

Fiscal 2017	$	2.3
Fiscal 2018	2.2
Fiscal 2019	2.1
Fiscal 2020	1.3
Fiscal 2021	0.3
Thereafter	0.9
Total	$	9.1

11. Litigation and Related Matters

On June 9, 2010, Smith & Nephew, Inc. ("Smith & Nephew") filed suit against Interlace, Inc., which the Company acquired on January 6, 2011, in the United States District Court for the District of Massachusetts. The complaint alleged that the Interlace MyoSure hysteroscopic tissue removal device infringed U.S. patent 7,226,459. On November 22, 2011, Smith & Nephew filed suit against the Company in the United States District Court for the District of Massachusetts. The complaint alleged that use of the MyoSure hysteroscopic tissue removal system infringed U.S. patent 8,061,359. Both complaints sought permanent injunctive relief and unspecified damages. On September 4, 2012, following a two week trial, the jury returned a verdict of infringement of both the ‘459 and ‘359 patents and assessed damages of $4.0 million. A bench trial regarding the Company’s assertion of inequitable conduct on the part of Smith & Nephew with regard to the ‘359 patent was held on December 9, 2012 and oral arguments on the issue of inequitable conduct were presented on February 27, 2013. On June 27, 2013, the Court denied the Company’s motions related to inequitable conduct and allowed Smith & Nephew’s request for injunction, but ordered that enforcement of the injunction be stayed until final resolution, including appeal, of the current re-examinations of both patents at the United States Patent and Trademark Office (“USPTO”). The Court also rejected the jury’s damage award and ordered the parties to identify a mechanism for resolving the damages issue. The Company intends to file post-trial motions seeking to reverse the jury’s verdict. The USPTO has issued final decisions that the claims of the ‘459 and the '359 patents asserted as part of the litigation are not patentable. Smith & Nephew has appealed these decisions to the U.S. Patent Trial and Appeal Board. On January 20, 2016, the U.S. Patent Trial and Appeal Board affirmed the USPTO decision holding the claims at issue in the ‘459 patent as invalid. Smith & Nephew has appealed this holding to the Court of Appeals for the Federal Circuit (CAFC). On September 22, 2016, oral arguments related to the ‘359 patent were held at the Patent Trial and

F-47

Appeal Board (PTAB). On October 25, 2016 the PTAB reversed the USPTO decision related to the ‘359 patent. The Company intends to appeal the PTAB reversal decision. At this time, based on available information regarding this litigation, the Company is unable to reasonably assess the ultimate outcome of this case or determine an estimate, or a range of estimates, of potential losses.

In January 2012, Enzo filed suit against Gen-Probe in the United States District Court for the District of Delaware. The Gen-Probe complaint alleged that certain of Gen-Probe’s diagnostics products, including products that incorporate Gen-Probe’s patented hybridization protection assay technology, such as the Aptima Combo 2 and Aptima HPV assays, infringe Enzo’s U.S. patent 6,992,180. On March 6, 2012, Enzo Life Sciences, Inc. (“Enzo”) filed suit against the Company in the United States District Court for the District of Delaware. The complaint alleged that certain of the Company’s molecular diagnostics products, including without limitation products based on its proprietary Invader chemistry, such as Cervista HPV HR and Cervista HPV 16/18, infringe Enzo’s U.S. patent 6,992,180. The complaint seeks permanent injunctive relief and unspecified damages. On September 30, 2013, Enzo amended its list of accused products to include Prodesse, MilliPROBE, PACE and Procleix assays. The complaint seeks permanent injunctive relief and unspecified damages. Enzo has asserted the ‘180 patent claims against six other companies. The court issued a Markman order on July 7, 2015 construing the claims, and it is expected that summary judgment motions will be heard in the fall of 2016. At this time, based on available information regarding this litigation, the Company is unable to reasonably assess the ultimate outcome of this case or determine an estimate, or a range of estimates, of potential losses.

On March 27, 2015, Enzo filed an additional suit against the Company in the United States District Court for the District of Delaware, The complaint alleged that certain additional Company molecular diagnostic products, including, inter alia, the Procleix Parvo/HAV assays and coagulation products, including the Invader Factor II test and the Invader Factor V test, also infringe U.S. Patent 6,992,180. The complaint further alleged that certain of the Company’s molecular diagnostic products, including Hologic’s Progensa PCA3 products, all Aptima products and all Procleix products infringe Enzo’s U. S. Patent 7,064,197. On June 11, 2015, this matter was stayed pending the resolution of summary judgment motions in the 2012 case referenced above. On March 30, 2016, the Company filed a request for inter-parties review of the ‘179 patent at the USPTO. At this time, based on available information regarding this litigation, the Company is unable to reasonably assess the ultimate outcome of this case or determine an estimate, or a range of estimates, of potential losses

On October 3, 2016, Enzo filed an additional suit against the Company in the United States District Court for the District of Delaware, The complaint alleged that certain additional Company molecular diagnostic products, including, inter alia, the Progensa ® PCA3, Aptima® and Procleix® products infringe U.S. Patent 6,221,581. At this time, based on available information regarding this litigation, the Company is unable to reasonably assess the ultimate outcome of this case or determine an estimate, or a range of estimates, of potential losses.

The Company is a party to various other legal proceedings and claims arising out of the ordinary course of its business. The Company believes that except for those matters described above there are no other proceedings or claims pending against it of which the ultimate resolution would have a material adverse effect on its financial condition or results of operations. In all cases, at each reporting period, the Company evaluates whether or not a potential loss amount or a potential range of loss is probable and reasonably estimable under ASC 450, Contingencies. Legal costs are expensed as incurred.

12. Grifols Collaboration Agreement

Under its collaboration agreement with Grifols, the Company manufactures blood screening products, while Grifols is responsible for marketing, sales and service of those products, which Grifols sells under its trademarks. The Company is entitled to recover 50% of its manufacturing costs incurred in connection with the collaboration and will receive a percentage of the blood screening assay revenue generated under the collaboration. The Company’s share of revenue from any assay it sells Grifols is currently 50% and will remain so through the remainder of the term of the collaboration. Grifols is obligated to purchase all of the quantities of assays specified on a 90-day demand forecast, due 90 days prior to the date Grifols intends to take delivery, and certain quantities specified on a rolling 12-month forecast.

The Company recognizes product revenue, and collaborative research and license revenue, which is included within services and other revenues, under this collaboration agreement. The Company recognized revenue of $235.4 million, $253.1 million and $223.3 million under this collaboration agreement in fiscal 2016, 2015, and 2014 respectively.

13. Business Segments and Geographic Information

The Company reports segment information in accordance with ASC 280, Segment Reporting. Operating segments are identified as components of an enterprise about which separate, discrete financial information is available for evaluation by the

F-48

chief operating decision maker, or decision-making group, in making decisions about how to allocate resources and assess performance. The Company’s chief operating decision maker is its chief executive officer, and the Company’s reportable segments have been identified based on the types of products manufactured and the end markets to which the products are sold. Each reportable segment generates revenue from either the sale of medical equipment and related services and/or sale of disposable supplies, primarily used for diagnostic testing and surgical procedures. The Company has four reportable segments: Diagnostics, Breast Health, GYN Surgical and Skeletal Health. Certain reportable segments represent an aggregation of operating units within each segment. The Company measures and evaluates its reportable segments based on segment revenues and operating income adjusted to exclude the effect of non-cash charges, such as intangible asset amortization expense, intangible asset impairment charges, restructuring and divestiture charges, litigation charges, and other one-time or unusual items.

Identifiable assets for the four principal reportable segments consist of inventories, intangible assets, goodwill, and property, plant and equipment. The Company fully allocates depreciation expense to its four reportable segments. The Company has presented all other identifiable assets as corporate assets. There were no intersegment revenues. Segment information for fiscal 2016, 2015, and 2014 was as follows:

	Years ended
	September 24, 2016		September 26, 2015		September 27, 2014
Total revenues:
Diagnostics	$	1,236.9	$	1,211.8	$	1,186.8
Breast Health	1,112.8		1,063.4		944.7
GYN Surgical	393.1		335.8		307.9
Skeletal Health	89.9		94.0		91.3
	$	2,832.7	$	2,705.0	$	2,530.7
Operating income:
Diagnostics	$	126.0	$	109.5	$	48.7
Breast Health	350.5		296.3		187.6
GYN Surgical	69.1		38.6		30.3
Skeletal Health	3.0		10.7		13.1
	$	548.6	$	455.1	$	279.7
Depreciation and amortization:
Diagnostics	$	341.8	$	358.7	$	376.0
Breast Health	22.6		28.6		41.7
GYN Surgical	99.9		102.7		104.6
Skeletal Health	1.1		1.4		0.9
	$	465.4	$	491.4	$	523.2
Capital expenditures:
Diagnostics	$	53.5	$	55.6	$	52.2
Breast Health	10.6		12.8		10.0
GYN Surgical	17.7		9.5		8.0
Skeletal Health	0.4		0.4		0.4
Corporate	12.3		11.1		9.6
	$	94.5	$	89.4	$	80.2

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	September 24, 2016		September 26, 2015		September 27, 2014
Identifiable assets:
Diagnostics	$	3,771.9	$	4,055.8	$	4,383.5
Breast Health	809.1		815.4		859.8
GYN Surgical	1,570.7		1,658.1		1,748.2
Skeletal Health	30.9		25.3		26.1
Corporate	1,134.4		1,087.9		1,351.1
	$	7,317.0	$	7,642.5	$	8,368.7

The Company operates in the following major geographic areas as noted in the below chart. Revenue data is based upon customer location. Other than the United States, no single country accounted for more than 10% of consolidated revenues. The Company’s sales in Europe are predominantly derived from France, the United Kingdom and Germany. The Company’s sales in Asia-Pacific are predominantly derived from China, Australia and Japan. The “All others” designation includes Canada, Latin America and the Middle East.

Revenues by geography as a percentage of total revenues were as follows:

	Years ended
	September 24, 2016		September 26, 2015		September 27, 2014
United States	78.9	%	76.0	%	75.1	%
Europe	10.2	%	11.8	%	13.3	%
Asia-Pacific	7.6	%	8.5	%	7.7	%
All others	3.3	%	3.7	%	3.9	%
	100.0	%	100.0	%	100.0	%

The Company’s property, plant and equipment, net are geographically located as follows:

	September 24, 2016		September 26, 2015		September 27, 2014
United States	$	370.7	$	369.1	$	366.8
Costa Rica	28.1		27.7		27.9
Europe	49.2		50.8		56.0
All other countries	12.2		9.5		11.2
	$	460.2	$	457.1	$	461.9

14. Accrued Expenses and Other Long-Term Liabilities

Accrued expenses and other long-term liabilities consisted of the following:

	September 24, 2016		September 26, 2015
Accrued Expenses
Compensation and employee benefits	$	176.4	$	173.2
Interest	11.7		14.6
Income and other taxes	38.4		13.3
Other	61.1		71.0
	$	287.6	$	272.1

F-50

	September 24, 2016		September 26, 2015
Other Long-Term Liabilities
Reserve for income tax uncertainties	$	167.6	$	145.1
Accrued lease obligation—long-term	34.8		34.0
Pension liabilities	11.2		10.1
Other	10.9		11.7
	$	224.5	$	200.9

15. Pension and Other Employee Benefits

The Company has certain defined benefit pension plans covering the employees of its Hitec Imaging German subsidiary (the “Pension Benefits”). As of September 24, 2016 and September 26, 2015, the Company’s pension liability was $11.0 million and $10.0 million, respectively, which is primarily recorded as a component of long-term liabilities in the Consolidated Balance Sheets. Under German law, there are no rules governing investment or statutory supervision of the pension plan. As such, there is no minimum funding requirement imposed on employers. Pension benefits are safeguarded by the Pension Guaranty Fund, a form of compulsory reinsurance that guarantees an employee will receive vested pension benefits in the event of insolvency. The pension plans were closed on December 31, 1997 and only eligible employees at that date could participate in the plans prior to closing to new participants.

The tables below provide a reconciliation of benefit obligations, plan assets, funded status, and related actuarial assumptions of the Company’s German Pension Benefits.

Change in Benefit Obligation	Years ended
	September 24, 2016			September 26, 2015			September 27, 2014
Benefit obligation at beginning of year	$	(10.0	)	$	(10.3	)	$	(10.1	)
Service cost	—			—			—
Interest cost	(0.2		)	(0.3		)	(0.3		)
Plan participants’ contributions	—			—			—
Actuarial loss	(1.2		)	(0.9		)	(0.8		)
Foreign exchange gain	0.1			1.2			0.6
Benefits paid	0.3			0.3			0.3
Benefit obligation at end of year	(11.0		)	(10.0		)	(10.3		)
Plan assets	—			—			—
Benefit obligation at end of year	$	(11.0	)	$	(10.0	)	$	(10.3	)

The tables below outline the components of the net periodic benefit cost and related actuarial assumptions of the Company’s German Pension Benefits.

Components of Net Periodic Benefit Cost	Years ended
	September 24, 2016			September 26, 2015		September 27, 2014
Service cost	$	—		$	—	$	—
Interest cost	0.4			0.3		0.3
Expected return on plan assets	—			—		—
Amortization of prior service cost	—			—		—
Recognized net actuarial gain	(0.2		)	—		—
Net periodic benefit cost	$	0.2		$	0.3	$	0.3

Weighted-Average Net Periodic Benefit Cost Assumptions	2016		2015		2014
Discount rate	1.30	%	2.05	%	2.95	%
Expected return on plan assets	—	%	—	%	—	%
Rate of compensation increase	—	%	—	%	—	%

F-51

The projected benefit obligation for the German Pension Benefits with projected benefit obligations in excess of plan assets was $11.0 million and $10.0 million at September 24, 2016 and September 26, 2015, respectively, and the accumulated benefit obligation for the German Pension Benefits was $11.0 million and $10.0 million at September 24, 2016 and September 26, 2015, respectively.

The Company is also obligated to pay long-term service award benefits under the German Pension Benefits. The projected benefit obligation for long-term service awards was $0.1 million at both September 24, 2016 and September 26, 2015, respectively.

The table below reflects the total Pension Benefits expected to be paid for the German Pension Benefits each fiscal year as of September 24, 2016:

2017	$	0.3
2018	$	0.3
2019	$	0.4
2020	$	0.4
2021	$	0.4
2022 to 2026	$	2.0

The Company also maintains additional contractual pension benefits for its top German executive officers in the form of a defined contribution plan. These contributions were insignificant in fiscal 2016, 2015 and 2014. Additionally, the Company has Swiss pension plans, which were insignificant in fiscal 2016, 2015, and 2014.

16. Quarterly Statement of Operations Information (Unaudited)

The following table presents a summary of quarterly results of operations for fiscal 2016 and 2015:

	2016
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Total revenue	$	695.2	$	693.3	$	717.4	$	726.8
Gross profit	379.1		385.0		393.1		406.1
Net income (1)	84.9		68.9		84.8		92.2
Diluted net income per common share	$	0.29	$	0.24	$	0.30	$	0.33

	2015
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Total revenue	$	652.8	$	655.5	$	693.9	$	702.8
Gross profit	338.6		336.0		378.7		379.4
Net income (2)	29.2		47.8		29.4		25.2
Diluted net income per common share	$	0.10	$	0.17	$	0.10	$	0.09

(1) Net income in the first quarter of fiscal 2016 included restructuring charges of $2.3 million and a realized gain of $25.1 million related to the sale of all the shares in a marketable security investment. Net income in the second quarter of fiscal 2016 included restructuring charges of $3.8 million and a debt extinguishment loss of $4.5 million. Net income in the fourth quarter of fiscal 2016 included restructuring charges of $2.9 million, a debt extinguishment loss of $0.8 million, and an other-than-temporary impairment charge of $1.1 million related to a marketable security.

(2) Net income in the first quarter of fiscal 2015 included restructuring charges of $8.0 million and a debt extinguishment loss of $6.7 million. Net income in the third quarter of fiscal 2015 included restructuring and divestiture charges of $11.9 million and a debt extinguishment loss of $18.2 million. Net income in the fourth quarter of fiscal 2015 included restructuring and divestiture charges of $6.5 million, a debt extinguishment loss of $37.8 million, and an other-than-temporary impairment charge of $7.8 million related to a marketable security.

F-52

Exhibit Index

		Incorporated  by Reference
Exhibit Number	Exhibit Description	Form	Filing Date/ Period End Date
2.1	Agreement and Plan of Merger, dated April 29, 2012, by and among Hologic, Gold Acquisition Corp. and Gen-Probe Incorporated.	8-K	05/01/2012
3.1	Certificate of Incorporation of Hologic.	S-1	01/24/1990
3.2	Certificate of Amendment to Certificate of Incorporation of Hologic.	10-Q	03/30/1996
3.3	Certificate of Amendment to Certificate of Incorporation of Hologic.	10-K	09/24/2005
3.4	Certificate of Amendment to Certificate of Incorporation of Hologic.	8-K	10/22/2007
3.5	Certificate of Amendment to Certificate of Incorporation of Hologic.	8-K	03/11/2008
3.6	Certificate of Designation of Series A Junior Participating Preferred Stock of Hologic.	8-K	11/21/2013
3.7	Certificate of Elimination of Series A Junior Participating Preferred Stock of Hologic.	8-K	06/25/2014
3.8	Fifth Amended and Restated Bylaws of Hologic, Inc.	10-Q	03/04/2016
4.1	Specimen Certificate for Shares of Hologic’s Common Stock.	8-A	01/31/1990
4.2	Description of Capital Stock (Contained in Hologic’s Certificate of Incorporation, as amended, filed as Exhibits 3.1, 3.2, 3.3, 3.4 and 3.5 hereto).
4.3	Indenture, dated December 10, 2007, by and between Wilmington Trust Company, as Trustee, and Hologic.	8-K	12/10/2007
4.4	Second Supplemental Indenture, dated November 23, 2010, by and between Wilmington Trust Company, as Trustee, and Hologic.	10-K	09/25/2010
4.5	Form of 2.00% Convertible Exchange Senior Note due 2037 (included in Exhibit 4.4).	10-K	09/25/2010
4.6	Third Supplemental Indenture, dated March 5, 2012, by and between Wilmington Trust Company, as Trustee, and Hologic.	8-K	03/08/2012
4.7	Form of 2.00% Convertible Senior Note due 2042 (included in Exhibit 4.6).	8-K	03/08/2012
4.8	Fourth Supplemental Indenture, dated February 21, 2013, by and between Wilmington Trust Company, as Trustee, and Hologic.	8-K	02/21/2013
4.9	Form of 2.00% Convertible Senior Note due 2043 (included in Exhibit 4.8).	8-K	02/21/2013
4.10	Indenture, dated July 2, 2015, by and among Hologic, the guarantors party thereto and Wells Fargo Bank, National Association, as Trustee.	8-K	07/02/2015
4.11	Form of 5.250% Senior Note due 2022 (included in Exhibit 4.10).	8-K	07/02/2015
10.1*	Second Amended and Restated 1999 Equity Incentive Plan.	10-Q	03/25/2006
10.2*	Amendment No. 1 to Second Amended and Restated 1999 Equity Incentive Plan.	S-8	10/23/2007
10.3*	Amendment No. 2 to Second Amended and Restated 1999 Equity Incentive Plan.	8-K	10/22/2007
10.4*	Amendment No. 3 to Second Amended and Restated 1999 Equity Incentive Plan.	8-K	12/12/2008

F-53

		Incorporated  by Reference
Exhibit Number	Exhibit Description	Form	Filing Date/ Period End Date
10.5*	The 2003 Incentive Award Plan of Gen-Probe Incorporated as amended and restated.	S-8	08/02/2012
10.6*	Hologic Amended and Restated 2008 Equity Incentive Plan.	8-K	03/11/2013
10.7*	Form of Stock Option Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2014).	8-K	11/12/2013
10.8*	Form of Stock Option Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2015).	8-K	11/05/2014
10.9*	Form of Stock Option Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2016).	8-K	10/14/2015
10.10*	Form of Stock Option Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2017).	8-K	11/09/2016
10.11*	Form of Restricted Stock Unit Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2014).	8-K	11/12/2013
10.12*	Form of Restricted Stock Unit Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2016).	8-K	10/14/2015
10.13*	Form of Restricted Stock Unit Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2017).	8-K	11/09/2016
10.14*	Form of Performance Stock Unit Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2014).	8-K	11/12/2013
10.15*	Form of Performance Stock Unit Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2015).	8-K	11/05/2014
10.16*	Form of Performance Stock Unit Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2016).	8-K	11/06/2015
10.17*	Form of Performance Stock Unit Award Agreement Under 2008 Equity Incentive Plan (adopted fiscal 2017).	8-K	11/09/2016
10.18*	Form of Independent Director Stock Option Award Agreement Under 2008 Equity Incentive Plan (annual grant, adopted fiscal 2014).	10-K	09/28/2013
10.19*	Form of Independent Director Stock Option Award Agreement Under 2008 Equity Incentive Plan (annual grant, adopted fiscal 2015).	10-K	09/27/2014
10.20*	Form of Independent Director Restricted Stock Unit Award Agreement Under 2008 Equity Incentive Plan (annual grant).	10-K	09/28/2013
10.21*	Form of Independent Director Stock Option Award Agreement Under 2008 Equity Incentive Plan (initial grant, adopted fiscal 2014).	10-K	09/28/2013
10.22*	Form of Independent Director Stock Option Award Agreement Under 2008 Equity Incentive Plan (initial grant, adopted fiscal 2015).	10-K	09/27/2014
10.23*	Form of Independent Director Restricted Stock Unit Award Agreement Under 2008 Equity Incentive Plan (initial grant).	10-K	09/28/2013
10.24*	Hologic, Inc. 2012 Employee Stock Purchase Plan, As Amended	8-K	03/04/2016
10.25*	Hologic Short-Term Incentive Plan.	8-K	11/06/2015
10.26*	Hologic Amended and Restated Deferred Equity Plan	8-K	12/16/2015
10.27*	Rabbi Trust Agreement.	10-K	09/28/2013

		Incorporated  by Reference
Exhibit Number	Exhibit Description	Form	Filing Date/ Period End Date
10.28*	Form of Indemnification Agreement (as executed with each director of Hologic).	8-K	03/06/2009
10.29*	Form of Senior Vice President Change of Control Agreement. (1)	10-Q	12/29/2012
10.30*	Form of Senior Vice President Severance Agreement. (1)	10-K	09/28/2013
10.31*	Employment Agreement dated December 6, 2013 by and between Stephen P. MacMillan and Hologic.	8-K	12/09/2013
10.32*	Amended and Restated Employment Agreement by and between the Company and Stephen P. MacMillan, dated September 18, 2015.	8-K	09/21/2015
10.33*	Amendment No. 1 to Amended and RestatedEmployment Agreement by and between the Company and Stephen P. MacMillan, dated September 24, 2016.	Filed herewith
10.34*	Form of Matching Restricted Stock Unit Award Agreement.	8-K	12/09/2013
10.35*	Change of Control Agreement dated December 6, 2013 by and between Stephen P. MacMillan and Hologic.	8-K	12/09/2013
10.36*	Offer Letter dated March 9, 2014 by and between Eric B. Compton and Hologic.	8-K	03/14/2014
10.37*	Severance and Change of Control Agreement dated March 9, 2014 by and between Eric B. Compton and Hologic. (2)	10-K	11/19/2015
10.38*	Offer Letter dated May 8, 2014 by and between Robert W. McMahon and Hologic.	8-K	05/13/2014
10.39*	Severance and Change of Control Agreement dated May 8, 2014 by and between Robert W. McMahon and Hologic. (2)	10-K	11/19/2015
10.40*	Offer Letter dated May 4, 2014 by and between Peter J. Valenti and Hologic.	10-Q	06/28/2014
10.41*	Senior Vice President Severance Agreement dated May 26, 2014 by and between Peter J. Valenti and Hologic.	10-K	09/27/2014
10.42*	Offer Letter dated August 21, 2014 by and between Thomas A. West and Hologic.	10-K	09/27/2014
10.43*	Senior Vice President Severance Agreement dated October 3, 2014 by and between Thomas A. West and Hologic.	10-K	09/27/2014
10.44*	Letter of Intent dated February 27, 2014 and Terms and Conditions of Employment dated March 10, 2014 by and between Claus Egstrand and Hologic.	10-K	09/27/2014
10.45*	Severance and Change of Control Agreement dated September 18, 2014 by and between Claus Egstrand and Hologic.	10-K	09/27/2014
10.46*	Offer Letter dated January 6, 2015 by and between John M. Griffin and Hologic.	10-Q	03/28/2015
10.47*	Severance and Change of Control Agreement dated February 2, 2015 by and between John M. Griffin and Hologic.	10-Q	03/28/2015
10.48	Facility Lease (Danbury) dated December 30, 1995 by and among Melvin J. Powers and Mary P. Powers D/B/A M&N Realty and Lorad.	Trex Medical Corporation S-1	03/29/1996
10.49	Lease Agreement (Danbury and Bedford) by and between BONE (DE) QRS 15-12, INC., and Hologic dated August 28, 2002.	10-K	09/28/2002

		Incorporated  by Reference
Exhibit Number	Exhibit Description	Form	Filing Date/ Period End Date
10.50	First Amendment to Lease Agreement (Danbury and Bedford) by and between BONE (DE) QRS 15-12, INC., and Hologic dated October 29, 2007.	10-K	09/29/2007
10.51	Office Lease dated December 31, 2003 between Cytyc and Marlborough Campus Limited Partnership.	Cytyc Corporation 10-K	12/31/2003
10.52	Lease Agreement by and between Zona Franca Coyol S.A. and Cytyc Surgical Products Costa Rica S.A. dated April 23, 2007.	10-K	09/29/2007
10.53	Lease Agreement by and between 445 Simarano Drive, Marlborough LLC and Cytyc dated July 11, 2006.	10-K	09/29/2007
10.54	Lease Guaranty dated October 22, 2007 between Bel Marlborough I LLC and Hologic, as guarantor thereunder.	8-K	10/22/2007
10.55	Form of Exchange Agreement.	8-K	02/15/2013
10.56	Credit and Guaranty Agreement, dated May 29, 2015, among Hologic, Hologic GGO 4 Ltd, each Designated Borrower from time to time party thereto, the Guarantors from time to time party thereto, each Lender from time to time party thereto and Bank of America, N.A., as Administrative Agent, Swing Line Lender and L/C Issuer.	8-K	05/29/2015
10.57	Pledge and Security Agreement, dated May 29, 2015, among the grantors party thereto and Bank of America, N.A. as Collateral Agent	10-Q	06/27/2015
10.58	Restated Agreement dated July 24, 2009 by and between Gen-Probe Incorporated and Novartis Vaccines and Diagnostics, Inc. ‡	Gen-Probe 10-Q/A	09/30/2009
10.59	First Amendment to Restated Agreement dated November 8, 2013 by and between Gen-Probe Incorporated and Novartis Vaccines and Diagnostics, Inc.	10-K	09/28/2013
10.60	Second Amendment to Restated Agreement by and between Gen-Probe Incorporated and Grifols Diagnostic Solutions Inc.‡	10-Q	06/27/2015
10.61	Supply Agreement for Panther Instrument System effective November 22, 2006 between Gen-Probe Incorporated and STRATEC Biomedical Systems AG. ‡	Gen-Probe 10-Q	09/30/2007
10.62	Amendment No. 1 dated June 1, 2011 to Supply Agreement for Panther Instrument System. ‡‡	Filed herewith
10.63	Amendment No. 2 dated February 28, 2013 to Supply Agreement for Panther Instrument System. ‡‡	Filed herewith
12.1	Ratio of Earnings to Fixed Charges.	Filed herewith
21.1	Subsidiaries of Hologic.	Filed herewith
23.1	Consent of Independent Registered Public Accounting Firm.	Filed herewith
31.1	Certification of Hologic’s CEO pursuant to Item 601(b)(31) of Regulation S-K, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	Filed herewith
31.2	Certification of Hologic’s CFO pursuant to Item 601(b)(31) of Regulation S-K, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	Filed herewith

		Incorporated  by Reference
Exhibit Number	Exhibit Description	Form	Filing Date/ Period End Date
32.1	Certification of Hologic’s CEO pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.	Furnished herewith
32.2	Certification of Hologic’s CFO pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.	Furnished herewith
101.INS	XBRL Instance Document.	Filed herewith
101.SCH	XBRL Taxonomy Extension Schema Document.	Filed herewith
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.	Filed herewith
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document.	Filed herewith
101.LAB	XBRL Taxonomy Extension Label Linkbase Document.	Filed herewith
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.	Filed herewith

______________

*    Indicates management contract or compensatory plan, contract or arrangement.

‡    Confidential treatment has been granted with respect to certain portions of this exhibit. A complete version of this

exhibit has been filed separately with the U.S. Securities and Exchange Commission.

‡‡    Confidential treatment has been requested with respect to certain portions of this exhibit. A complete version of this

exhibit has been filed separately with the U.S. Securities and Exchange Commission.

(1) List of executive officers to whom provided filed herewith.

EX-10.33

Amendment No. 1 to Employment Agreement

THIS AMENDMENT NO. 1 TO EMPLOYMENT AGREEMENT (this “Amendment”) is made and entered into as of September 24, 2016, by and between Hologic, Inc., a Delaware corporation (the “Company”), and Stephen P. MacMillan (the “Executive” and, together with the Company, the “Parties”).

WHEREAS, the Company and Executive entered into an Amended and Restated Employment Agreement dated as of September 18, 2015 (the “Agreement”);

WHEREAS, the Parties desire to amend Section 3.3 of the Agreement to include the metric of net income, effective for fiscal 2017;

WHEREAS, the Parties desire to amend Section 3.6 of the Agreement to delete the housing allowance, effective for fiscal 2017; and

WHEREAS, the Board of Directors of the Company has approved the amendment of the Agreement in the manner reflected herein.

NOW THEREFORE, in consideration of the mutual covenants and agreements set forth herein, the Parties, each intending to be legally bound, hereby agree as follows:

1. Long-Term Incentive. The existing Section 3.3 of the Agreement is hereby deleted and replaced in its entirety with the following, with effect for fiscal 2017:

3.3.Long-Term Incentive. Beginning with fiscal year 2016 and each fiscal year thereafter during the Term, the Executive shall receive an annual grant under the Company’s 2008 Amended and Restated Equity Incentive Plan (as it may be amended from time to time, the “Equity Plan”) (such grant, the “Annual Grant”). The value of the Annual Grant, which shall be based on the closing price of the Company’s common stock on the date of issuance, shall be $7,250,000 for the initial grant made in fiscal 2016. For each subsequent fiscal year, the value of the Annual Grant shall be adjusted from the prior year’s value as follows: (i) if the Company’s earnings per share (“EPS”) and net income both increase from the prior fiscal year, then the Annual Grant value shall be increased by a percentage equal to one half of the percentage increase in EPS or net income, whichever increase is lower; (ii) if the Company’s EPS and net income both decrease from the prior fiscal year, then the Annual Grant value shall be decreased by a percentage equal to the percentage decrease in EPS or net income, whichever decrease is greater; and (iii) if either EPS or net income decreases from the prior fiscal year, then the Annual Grant value shall be decreased by a percentage equal to that EPS or net income percentage decrease. For the avoidance of doubt, by way of example (a) if EPS increases 6.3% from the prior year and net income increases 4.2% from the prior year, then the Annual Grant value will increase 2.1% from the prior year’s Annual Grant value; (b) if EPS decreases 6.3% from the prior year and

net income decreases 4.2% from the prior year, then the Annual Grant value will decrease 6.3% from the prior year’s Annual Grant value; and (c) if EPS increases 6.3% from the prior year and net income decreases 4.2% from the prior year, then the Annual Grant value will decrease 4.2% from the prior year’s Annual Grant value. For purposes of this Section 3.3, EPS and net income shall be the same EPS and net income used for purposes of the STIP. To the extent EPS or net income is not used for purposes of the STIP, EPS or net income, as applicable, hereunder shall mean non-GAAP EPS or net income as publicly reported by the Company. Such grants shall each be subject to all terms and conditions applicable to grants under the Equity Plan, shall be evidenced by grant agreements in the form customarily used for Equity Plan grants to other named executive officers of the Company and shall be subject to the performance, payout and vesting conditions previously established by the Committee, provided, however, that such awards shall immediately vest (subject in the case of the performance stock units to the achievement of established performance targets) upon Executive’s death or Disability in accordance with the governing award agreement.

2. Business Expenses. The following sentence, which is the last sentence of Section 3.6 of the Agreement, is hereby deleted, with effect for fiscal 2017:

During the Initial Term, the Company shall provide the Executive with a housing allowance of $100,000 per year to cover housing allowances in the greater Boston area.

3. Defined Terms. Capitalized terms used but not defined herein shall have the meaning ascribed to them in the Agreement.

4. Counterparts. This Amendment may be executed in one or more facsimile, electronic or original counterparts, each of which shall be deemed an original and both of which together shall constitute the same instrument.

5. Ratification. All terms and provisions of the Agreement not amended hereby, either expressly or by necessary implication, shall remain in full force and effect. From and after the date of this Amendment, all references to the term Agreement in this Amendment or the original Agreement shall include the terms contained in this Amendment.

[Signature Page Follows]

IN WITNESS WHEREOF, the Parties hereto have executed this Amendment effective as of September 24, 2016.

HOLOGIC, INC.
By:	/s/ Elaine S. Ullian
	Elaine S. Ullian
	Lead Independent Director
/s/ Stephen P. MacMillan
Stephen P. MacMillan
Chairman, President and Chief Executive Officer

EX-10.62

CONFIDENTIAL TREATMENT REQUESTED: Certain portions of this document have been omitted pursuant to a request for confidential treatment and, where applicable, have been marked with an asterisk (“[***]”) to denote where omissions have been made. The confidential material has been filed separately with the Securities and Exchange Commission.

AMENDMENT NO. 1 TO

SUPPLY AGREEMENT

FOR PANTHER INSTRUMENT SYSTEM

This Amendment No. 1 (“Amendment No. 1”) is entered into effective as of June 1, 2011 (“Amendment Effective Date”) pursuant to and amending the “Supply Agreement for Panther Instrument” (the “Agreement”) between Gen-Probe Incorporated, a Delaware corporation (“Gen-Probe”), and STRATEC Biomedical Systems AG (“STRATEC”) (collectively, “Parties”).

RECITALS

STRATEC and Gen-Probe entered into a Supply Agreement for Panther Instrument System having an effective date of 22 November 2006 (“Agreement”),.

The Parties now wish to amend the Agreement.

NOW, THEREFORE, in consideration of the mutual obligations in this Amendment No. 1, the Parties agree as follows:

TERMS

1. The existing Third Sentence of Section 9.1 (“Product Warranty”) of the Agreement is hereby deleted and new Section 9.1(a) is added to the Agreement as follows:

If any Product under warranty is to be repaired at a Customer site or at a Gen-Probe facility, STRATEC shall provide the necessary repair parts to Gen-Probe at STRATEC’s cost (including the cost of shipping) and Gen-Probe shall provide the labor necessary to perform such repair. STRATEC shall compensate Gen-Probe for the cost of labor for replacing a defective part under warranty at the flat rate of [***] or [***], at Gen-Probe’s election, per day per warranty repair service performed onsite at a customer or performed in-house at Gen-Probe’s premises per day (the “Flat Rate”). For the avoidance of doubt, STRATEC only be obligated to cover (i) the costs of each specific defective part under warranty to be replaced and (ii) labor for such specific defective part at the Flat Rate. Any additional cost shall be borne by Gen-Probe. If multiple defective parts under warranty are replaced in a single day, the Flat Rate shall be paid for each such part. If replacement of a defective part under warranty requires more than a single day, the Flat Rate shall be paid for each day of required service.

2. Exhibit “C” to the Agreement (“Reliability Requirements, Panther Instrument”) is hereby modified as follows: Table 1 in Section 3.4 (“Reliability Metrics”) at page 6 of Exhibit C is deleted and replaced with the new Table 1 which is attached to this Amendment No. 1 as Exhibit C-1.

3. All capitalized terms used but not defined in this Amendment No. 1 will have the respective meaning given to them in the Agreement.

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CONFIDENTIAL TREATMENT REQUESTED: Certain portions of this document have been omitted pursuant to a request for confidential treatment and, where applicable, have been marked with an asterisk (“[***]”) to denote where omissions have been made. The confidential material has been filed separately with the Securities and Exchange Commission.

4. Except as expressly set forth in this Amendment No.1, all other terms and conditions of the Agreement shall continue in full force and effect.

5. Facsimile signatures are deemed equivalent to original signatures for purposes of this Amendment No. 1 and this Agreement may be signed in counterpart.

6. This Amendment No. 1 is effective on the Amendment Effective Date.

IN WITNESS WHEREOF, the Parties have executed this Amendment No. 1 by their duly authorized representatives.

Gen-Probe Incorporated	STRATEC Biomedical Systems AG
/s/ Brad Blake	/s/ Marcus Wolfinger
Brad Blake	Marcus Wolfinger
Vice President, Instrument Systems	CEO

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CONFIDENTIAL TREATMENT REQUESTED: Certain portions of this document have been omitted pursuant to a request for confidential treatment and, where applicable, have been marked with an asterisk (“[***]”) to denote where omissions have been made. The confidential material has been filed separately with the Securities and Exchange Commission.

EXHIBIT C-1

Substitute Table 1 for Section 3.4 (“Reliability Metrics”) of Exhibit C, Supply Agreement

Table I: Reliability Metrics Correlated to Project Milestones

Metric	Target, Info only Prototype Unit Build Target	Validation Unit Build Target	Acceptance Criteria for Pre- Production Build Target (Requirement for Clinical Trials)	Acceptance Criteria for For Initial ex-US Launch Target	Acceptance Criteria for production units built after Nov 30, 2011 and on or before March 31, 2012	Acceptance Criteria for production units built after March 31, 2012
Type of Testing	[***]	[***]	[***]	[***]	[***]	[***]
Call Rate Prediction Model1 RGT & RDT testing	[***]	[***]	[***]	[***]	[***]	[***]
Call Rate From Fielded Units2	[***]	[***]	[***]	[***]	[***]	[***]
Instrument Efficiency	[***]	[***]	[***]	[***]	[***]	[***]
MTBCI Hours	[***]	[***]	[***]	[***]	[***]	[***]

¹ Note: "Call Rate Prediction Model" better defines and helps predict if the units under test meet the Panther's PRO tag #UN-UR100: "Instrument will require no more than [***] unscheduled service visits per year of normal use" when released. This is a critical milestone in project to meet exUS and US launch Reliability requirements.

²Note: "Call Rate From Fielded Units" also better defines the Panther PRO tag# UN-UR100. This is a critical post-launch milestone for the Project. Refer to definition section 4.

CONFIDENTIAL

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EX-10.63

CONFIDENTIAL TREATMENT REQUESTED: Certain portions of this document have been omitted pursuant to a request for confidential treatment and, where applicable, have been marked with an asterisk (“[***]”) to denote where omissions have been made. The confidential material has been filed separately with the Securities and Exchange Commission.

AMENDMENT NO. 2 TO

SUPPLY AGREEMENT

FOR PANTHER INSTRUMENT SYSTEM

This Amendment No. 2 (this “Amendment No. 2”) is effective as of February 28^th, 2013 (the “Amendment Effective Date”) pursuant to and amending the Supply Agreement for Panther Instrument System dated November 22, 2006 (as amended, the “Supply Agreement”) by and between Gen-Probe Incorporated, a Delaware corporation (“Gen-Probe”), and STRATEC Biomedical AG (“STRATEC”, formerly operating under Stratec Biomedical Systems AG). Capitalized terms used but not defined herein shall have the meanings given to such terms in the Supply Agreement. Capitalized terms used ,but not defined herein, or in the Supply Agreement shall have the meanings given to such terms in Amendment Six to the Development Agreement.

RECITALS

WHEREAS, concurrently with entering into the Supply Agreement, Gen-Probe and STRATEC entered into a Development Agreement for Panther Instrument System dated November 22, 2006 (as amended, the “Development Agreement”);

WHEREAS, Gen-Probe has requested that STRATEC design and develop (a) a new sidecar module for Gen-Probe’s existing Panther instrument which will expand the Panther’s capabilities to support polymerase chain reaction (“PCR”) based diagnostic assays in addition to the system’s existing diagnostic capabilities, (b) a kit to retrofit Gen-Probe’s current diagnostic Panther instruments to modify such systems as necessary or appropriate to incorporate and run the newly developed PCR sidecar module in addition to the system’s existing diagnostic capabilities, and (c) certain modifications to Gen-Probe’s existing Panther instrument necessary and appropriate to manufacture Panther instruments pursuant to the Supply Agreement on a going-forward basis that would not require a retrofitting kit in order to incorporate the newly developed PCR sidecar module and run PCR based diagnostic assays in addition to the system’s existing diagnostic capabilities;

WHEREAS, concurrently with the execution of this Amendment No. 2, the Parties are entering into Amendment No. 6 to the Development Agreement dated as of February 28^th, 2013 (“Development Agreement Amendment Six”) to provide for the implementation of the foregoing design and development activities;

WHEREAS, the parties wish to amend the Supply Agreement to provide for the manufacture and supply of Radium Instruments (as defined in the Development Agreement Amendment Six), subject to the successful completion of such design and development activities pursuant to Development Agreement Amendment Six; and

WHEREAS, the Parties intend that the Supply Agreement will govern the terms and conditions of the manufacturing and supply activities to be performed hereunder, except to the extent specifically provided for otherwise herein.

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CONFIDENTIAL TREATMENT REQUESTED: Certain portions of this document have been omitted pursuant to a request for confidential treatment and, where applicable, have been marked with an asterisk (“[***]”) to denote where omissions have been made. The confidential material has been filed separately with the Securities and Exchange Commission.

AGREEMENT

NOW, THEREFORE, in consideration of the mutual promises, covenants and agreements herein set forth, and for other good and valuable consideration the receipt and sufficiency of which is hereby acknowledged, the parties hereto agree as follows:

ARTICLE 1

DEFINITIONS

1.1Definition Modifications. The following definitions within the Supply Agreement shall be modified as set forth below only for purposes of this Amendment No. 2 and the manufacturing and supply activities to be conducted hereunder:

1.1.1“Product Specifications” shall mean the specifications for each of the Products, including such exterior colors, trade names, trademarks and other markings as Gen-Probe shall request, and performance specifications to be used for testing the Products delivered hereunder, all as set forth in the Product Requirements Document (PRD) attached as Exhibit B-1 to the Development Agreement Amendment Six (and as it may be subsequently revised in accordance with the terms of Development Agreement Amendment Six).

1.1.2“Product” shall mean, individually and collectively, the Production Radium Instrument as well as the associated consumables, accessories, Instrument Software, supplies and spare parts. The module “Thermocycler” is solely designed, developed and manufactured by Gen-Probe and provided to Stratec who incorporates it into the Product. Therefore, Sections 3.2, 3.3, 3.7, 7.3 and 7.5 of the Supply Agreement shall not apply to the Thermocycler. Products shall be marketed by Gen-Probe under its own trade names and trademarks. Whenever “Product” is referred to hereunder with economic implications to either Party, the Parties agree that the term “Product” shall be understood in the following order beginning with: software – parts of assemblies – sub-assemblies – assemblies – instrument – system.

1.1.3“Thermocycler” shall mean the module for ramping up and down the temperature of the prepared samples and measuring the reaction performance of the PCR (polymerase chain reaction) through florescence detection. The Thermocycler for the Radium Instrument is solely designed, developed and manufactured by Gen-Probe and provided to Stratec. The Thermocycler shall fulfill all interfacing requirements given by Gen-Probe to Stratec in order for such Thermocycler to be integrated into the Radium Instrument by Stratec.

1.1.4“Production Radium Instrument” as used herein, “Production Radium Instrument” means a Radium Instrument manufactured by Stratec using series-level manufacturing techniques, following successful completion of the Parties’ activities under Development Agreement Amendment Six and Gen-Probe’s validation of the Radium Instrument design during performance of Development Agreement Amendment Six, in accordance with the PRD.

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CONFIDENTIAL TREATMENT REQUESTED: Certain portions of this document have been omitted pursuant to a request for confidential treatment and, where applicable, have been marked with an asterisk (“[***]”) to denote where omissions have been made. The confidential material has been filed separately with the Securities and Exchange Commission.

1.2 Amendment to Existing Supply Agreement Definition.

1.2.1Section 1.15 of the Supply Agreement shall be amended and restated in its entirety to read as follows:

“1.15    Term – As used herein, “Term” or “Term of this Agreement” means the period of effectiveness of this Agreement, which shall commence on the Effective Date and end on the date which is the later of (a) fifteen (15) years after the Effective Date or (b) six years after the date on which the first commercial placement of the Production Radium Instrument is made in the United States of America, unless extended or terminated earlier as set forth in Article 12.”

ARTICLE 2

PRODUCTION AND SUPPLY

2.1Production and Supply. For the avoidance of doubt, the parties acknowledge and agree that Section 2.1 of the Supply Agreement, as amended hereby, shall apply to the manufacture and supply of Radium Instruments hereunder as if set forth in its entirety herein with such changes thereto as are necessary to make such Section applicable to the manufacture and supply of Radium Instruments.

Section 2.1 of the Supply Agreement shall be amended by adding the following additional sentence to the end of Section 2.1:

“For the avoidance of doubt, the Parties acknowledge and agree that the Minimum Annual Purchase Commitment (which, for the avoidance of doubt, applies to the purchase of the Production Instrument and not to the purchase of the Production Radium Instrument) shall expire in calendar year 2016 and shall not apply to any calendar year thereafter during the Term of the Agreement.”

Additionally, Section 2 of the Supply Agreement shall be amended by adding a new Section 2.2 thereto as follows:

2.2Minimum Sidecar Purchase Commitments. For purposes of this Amendment No. 2 only, Gen-Probe agrees to purchase a minimum of [***] production-level Sidecars (the “Minimum Sidecar Purchase Commitment”) during the period ending on the date which is six years following the date on which the first commercial placement of the Production Radium Instrument is made in the United States of America. If Gen-Probe fails to satisfy the foregoing aggregate purchase commitment during the aforesaid period, Gen-Probe shall pay STRATEC, as STRATEC‘s sole and exclusive remedy therefor, [***] for each Sidecar below the Minimum Sidecar Purchase Commitment Gen-Probe has failed to purchase.

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CONFIDENTIAL TREATMENT REQUESTED: Certain portions of this document have been omitted pursuant to a request for confidential treatment and, where applicable, have been marked with an asterisk (“[***]”) to denote where omissions have been made. The confidential material has been filed separately with the Securities and Exchange Commission.

ARTICLE 3

REGULATORY MATTERS AND PRODUCT CERTIFICATIONS

For the avoidance of doubt, the parties acknowledge and agree that the entirety of Article 3 of the Supply Agreement shall apply to the manufacture and supply of Radium Instruments hereunder as if set forth in its entirety herein with such changes thereto as are necessary to make such Article applicable to the manufacture and supply of Radium Instruments.

ARTICLE 4

MANUFACTURING, LABELLING, AND PRODUCT LITERATURE

For the avoidance of doubt, the parties acknowledge and agree that the entirety of Article 4 of the Supply Agreement shall apply to the manufacture and supply of Radium Instruments hereunder as if set forth in its entirety herein with such changes thereto as are necessary to make such Article applicable to the manufacture and supply of Radium Instruments.

ARTICLE 5

FORECASTS, ORDERS AND DELIVERIES

For the avoidance of doubt, the parties acknowledge and agree that the entirety of Article 5 of the Supply Agreement shall apply to the manufacture and supply of Radium Instruments hereunder as if set forth in its entirety herein with such changes thereto as are necessary to make such Article applicable to the manufacture and supply of Radium Instruments; provided, however, that the reference therein to “Incoterms 2000” shall be null and void and replaced by “Incoterms in its latest revision”.

ARTICLE 6

PRICING AND PAYMENT TERMS

6.1Pricing. The second sentence of Section 6.1 of the Supply Agreement is hereby deleted and replaced with the following:

“The combined transfer price of the Sidecar and Retrofit Kit, excluding the Thermocycler, shall be [***]. The combined transfer price of the Production Radium Instrument, excluding the Thermocycler, shall be [***].”

For the avoidance of doubt, the parties acknowledge and agree that the remainder of Section 6.1 and Article 6 of the Supply Agreement shall apply to the manufacture and supply of Radium Instruments hereunder as if set forth in its entirety herein with such changes thereto as are necessary to make such Section and Article applicable to the manufacture and supply of Radium Instruments.

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CONFIDENTIAL TREATMENT REQUESTED: Certain portions of this document have been omitted pursuant to a request for confidential treatment and, where applicable, have been marked with an asterisk (“[***]”) to denote where omissions have been made. The confidential material has been filed separately with the Securities and Exchange Commission.

ARTICLE 7

TRAINING, SPARES AND SERVICE SUPPORT

For the avoidance of doubt, the parties acknowledge and agree that Article 7 of the Supply Agreement shall apply to the manufacture and supply of Radium Instruments hereunder as if set forth in its entirety herein with such changes thereto as are necessary to make such Article applicable to the manufacture and supply of Radium Instruments; provided, however, that Sections 7.4, 7.5, 7.6 shall not apply to the Thermocycler.

ARTICLE 8

SOFTWARE

For the avoidance of doubt, the parties acknowledge and agree that Article 8 of the Supply Agreement shall apply to the manufacture and supply of Radium Instruments hereunder as if set forth in its entirety herein with such changes thereto as are necessary to make such Article applicable to the manufacture and supply of Radium Instruments.

ARTICLE 9

PRODUCT WARRANTY AND REPRESENTATIONS

For the avoidance of doubt, the parties acknowledge and agree that Article 9 of the Supply Agreement, as amended hereby, shall apply to the manufacture and supply of Radium Instruments hereunder as if set forth in its entirety herein with such changes thereto as are necessary to make such Article applicable to the manufacture and supply of Radium Instruments.

Additionally, Article 9 of the Supply Agreement shall be amended by adding a new Section 9.5 thereto as follows:

9.5    Warranty Disclaimer.ALL WARRANTIES BY STRATEC, EXPRESS OR IMPLIED, AS SET FORTH HEREUNDER (INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, AND RELIABILTY), RELATING TO ANY FAILURE IN THE DEVELOPMENT AND/OR DESIGN AS WELL AS THE MANUFACTURE AND PERFORMANCE AND/OR OPERATION OF EACH THERMOCYCLER PROVIDED TO STRATEC HEREUNDER BY OR ON BEHALF OF GEN-PROBE ARE DISCLAIMED BY STRATEC AND SHALL NOT APPLY. THE FOREGOING SHALL ALSO APPLY TO ANY FAILURE OR DEFECT OF THE PRODUCT WHICH ARISES OUT OF OR IS PRIMARILY ATTRIBUTABLE TO ANY FAILURE IN THE DEVELOPMENT AND/OR DESIGN AS WELL AS THE MANUFACTURE AND PERFORMANCE AND/OR OPERATION OF EACH THERMOCYCLER PROVIDED TO STRATEC HEREUNDER BY OR ON BEHALF OF GEN-PROBE.

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CONFIDENTIAL TREATMENT REQUESTED: Certain portions of this document have been omitted pursuant to a request for confidential treatment and, where applicable, have been marked with an asterisk (“[***]”) to denote where omissions have been made. The confidential material has been filed separately with the Securities and Exchange Commission.

ARTICLE 10

INDEMNIFICATION AND INSURANCE

For the avoidance of doubt, the parties acknowledge and agree that Article 10 of the Supply Agreement, as amended hereby, shall apply to the manufacture and supply of Radium Instruments hereunder as if set forth in its entirety herein with such changes thereto as are necessary to make such Article applicable to the manufacture and supply of Radium Instruments.

Additionally, Section 10.1.a of the Supply Agreement shall be amended by adding new Sections 10.1.a.4 and 10.1.a.5 thereto as follows:

10.1.a.4. Notwithstanding the provisions set forth in Section 10.1.a.2, if any infringement claim arises out of or results from Gen-Probe’s design, development and/or manufacture of the Thermocycler or the use thereof, either solely or in combination with other products or technology, and if the Thermocycler is in any suit or proceeding held to constitute infringement of any patents or proprietary rights of any third party and the further manufacture, sale and/or use thereof is enjoined, Gen-Probe shall, in its sole discretion and at its sole expense and in compliance with all of the terms of this Amendment No. 2 either (i) procure for Stratec the right to continue using such Thermocycler; (ii) replace the same with a non-infringing equivalent; or (iii) modify the Thermocycler so it becomes non-infringing.

10.1.a.5. Notwithstanding the provisions set forth in Section 10.1.a.3, the indemnification obligations thereunder shall not apply to the extent that the failure of Production Radium Instruments to comply with the Reliability Requirements arise out of or is primarily attributable to any failure in the development and/or design as well as the manufacture and performance and/or operation of theThermocycler.

ARTICLE 11

CONFIDENTIAL INFORMATION

For the avoidance of doubt, the parties acknowledge and agree that Article 11 of the Supply Agreement shall apply to the manufacture and supply of Radium Instruments hereunder as if set forth in its entirety herein with such changes thereto as are necessary to make such Article applicable to the manufacture and supply of Radium Instruments.

ARTICLE 12

TERM AND TERMINATION

For the avoidance of doubt, the Parties acknowledge and agree that, except as set forth below with respect to the addition of new Section 12.8, the terms of Article 12 of the Supply Agreement shall in no way be affected or amended hereby. The Parties expressly acknowledge and agree that all obligations and liabilities under this Amendment No. 2 are expressly conditioned on the successful completion of the Radium Development Activities and Gen-Probe’s validation of the Radium Instrument in accordance with the PRD pursuant to Development Agreement Amendment Six. Any termination of Development Agreement Amendment Six in accordance with its terms

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CONFIDENTIAL TREATMENT REQUESTED: Certain portions of this document have been omitted pursuant to a request for confidential treatment and, where applicable, have been marked with an asterisk (“[***]”) to denote where omissions have been made. The confidential material has been filed separately with the Securities and Exchange Commission.

shall also automatically terminate this Amendment No. 2, without liability to the terminating party except as set forth in Development Agreement Amendment Six.

Additionally, Article 12 of the Supply Agreement shall be amended by adding a new Section 12.8 thereto as follows:

12.8    Termination After Satisfaction of Minimum Sidecar Purchase Commitment. If, after satisfaction of the Minimum Sidecar Purchase Commitment, (i) this Agreement is not renewed by either party as contemplated by Section 12.1 hereof or (ii) this Agreement is terminated by Gen-Probe pursuant to Section 12.2 (Termination for Material Breach) or Section 12.3 (Termination in the Event of Insolvency), then Gen-Probe shall have the right to continue production of the Sidecar and the Retrofit Kit (excluding modules contained within the bill of material for the Panther instrument) without Stratec (either by itself or through a third party contract manufacturer) and Stratec shall reasonably cooperate in transferring production to Gen-Probe or such other third party contract manufacturer and shall provide all assistance reasonably necessary in connection therewith (including the delivery of documentation and materials reasonably necessary to permit continued manufacturing), provided that Gen-Probe shall reimburse Stratec for its actual documented costs and expenses in connection with providing such support, without markup of any kind. In such event, Stratec grants to Gen-Probe a non-exclusive license under any and all Stratec IP Rights (as such term is defined in the Development Agreement) relating to the Radium Development Activities (including, but not limited to, the Sidecar and/or the Retrofit Kit), including, without limitation, source code, to make, have made, import, export, use, offer for sale, have sold and sell the Radium Instrument. The license granted hereunder shall be royalty-bearing at a rate of (x) [***] per Radium Instrument sold for the first [***] Radium Instruments sold and (y) [***] per Radium Instrument sold after the first [***] Radium Instruments sold. For the avoidance of doubt, the Parties acknowledge and agree that this Section 12.8 would allow Gen-Probe to continue the manufacture of the Sidecar and the Retrofit Kit (excluding modules contained within the bill of material for the Panther instrument) but not the Panther.

ARTICLE 13

MISCELLANEOUS

13.1    General. For the avoidance of doubt, the parties acknowledge and agree that the entirety of Article 13 of the Supply Agreement, as amended hereby, shall apply to the manufacture and supply of Radium Instruments hereunder as if set forth in its entirety herein with such changes thereto as are necessary to make such Article applicable to the manufacture and supply of Radium Instruments.

Additionally, Section 13 of the Supply Agreement shall be amended by adding a new Section 13.21 thereto as follows:

13.21    Performance by Stratec Affiliates. Upon the prior written consent of Gen-Probe, one or more of Stratec’s Affiliate(s) may become a party to the Agreement and may provide Services to Gen-Probe under the Agreement. The execution of an agreement by any Stratec Affiliate and Gen-Probe in the name of such Stratec Affiliate, specifically referencing the

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CONFIDENTIAL TREATMENT REQUESTED: Certain portions of this document have been omitted pursuant to a request for confidential treatment and, where applicable, have been marked with an asterisk (“[***]”) to denote where omissions have been made. The confidential material has been filed separately with the Securities and Exchange Commission.

Agreement, is the agreement by and between the applicable Stratec Affiliate and Gen-Probe that such agreement is subject to the terms and conditions of this Agreement.

13.2    Counterparts. This Amendment No. 2 may be executed in one or more counterparts, each of which will be deemed to be an original, but all of which together will constitute one and the same instrument; however, this Amendment No. 2 shall have no force or effect until executed by both parties.

13.3    Effect on Supply Agreement. All other terms and conditions of the Supply Agreement, as amended, shall remain in full force and effect. To the extent any conflict arises between the terms of this Amendment No. 2 and the terms of the Supply Agreement, the terms of this Amendment No. 2 shall control but only with respect to the manufacture and supply of Radium Instruments hereunder.

IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the Amendment Effective Date:

GEN-PROBE INCORPORATED	STRATEC BIOMEDICAL AG
/s/ Robert A. Cascella	/s/ Marcus Wolfinger
Name: Robert A. Cascella	Name: Marcus Wolfinger
Title: President	Title: Chief Executive Officer

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EX-12.1

Exhibit 12.1

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

The following table presents the computation of our ratio of earnings to fixed charges for each of the periods indicated (in millions, except ratio).

	Fiscal Year Ended
	September 24, 2016		September 26, 2015		September 27, 2014		September 28, 2013			September 29, 2012
Earnings:
Income (loss) before provision for income taxes	$	415.3	$	177.2	$	48.1	$	(1,192.9	)	$	(61.7	)
Fixed charges	159.8		210.5		226.2		287.2			146.4
Amortization of capitalized interest	0.1		0.1		0.1		0.1			0.1
Total earnings (losses)	$	575.2	$	387.8	$	274.4	$	(905.6	)	$	84.8
Fixed charges:
Interest expense	$	155.3	$	205.5	$	220.6	$	281.1		$	140.3
Estimate of interest within rental expense	4.5		5.0		5.6		6.1			6.1
Total fixed charges	$	159.8	$	210.5	$	226.2	$	287.2		$	146.4
Ratio of earnings to fixed charges (a)	3.60		1.84		1.21		—			—

For the purpose of calculating the ratio of earnings to fixed charges, earnings consist of our income (loss) before provision for income taxes plus our fixed charges. Fixed charges consist of interest expense, amortization of debt discount and debt issuance costs and an estimate of the interest portion of rental expense. Interest expense recorded on uncertain tax positions has been recorded in the provision for income taxes and therefore has been excluded from the calculation.

(a) In fiscal 2013 and 2012, we incurred losses from pre-tax continuing operations, and as a result, our earnings were insufficient to cover our fixed charges by $1.19 billion and $61.5 million, respectively.

EX-21.1

Exhibit 21.1

Subsidiaries of Hologic	Jurisdiction of Incorporation or Organization
Beijing Century Jinbai Technology Co., Ltd.	China
Beijing Hologic Technology Co., Ltd.	China
Beijing Mingwood Biotechnology Co., Ltd.	China
Beijing TCT Jinbai Technologies Co., Ltd.	China
Beijing TCT Medical Technology Co., Ltd.	China
BioLucent, LLC	Delaware
Century Likang (Beijing) Co., Ltd.	China
Cytyc Cayman Limited	Cayman Islands
Cytyc Corporation	Delaware
Cytyc Prenatal Products Corp.	Delaware
Cytyc Surgical Products II, LLC	Massachusetts
Cytyc Surgical Products, LLC	Massachusetts
Direct Radiography Corp.	Delaware
Gen-Probe Australia Pty Ltd.	Australia
Gen-Probe Incorporated	Delaware
Gen-Probe Prodesse, Inc.	Wisconsin
Gen-Probe Sales & Service, Inc.	Delaware
Hangzhou Zuanbai Technology Co., Ltd	China
Hologic (Australia) Pty Ltd.	Australia
Hologic (China) Enterprise Management Consulting Co., Ltd.	China
Hologic (MA), LLC	Massachusetts
Hologic (UK) Limited	England and Wales
Hologic ASE, LLC	Delaware
Hologic Asia Pacific Limited	Hong Kong
Hologic Asia, Limited	Hong Kong
Hologic Canada Limited	Canada
Hologic Denmark ApS	Denmark
Hologic Deutschland, GmbH	Germany
Hologic Europe Middle East and Africa, S.A.	Switzerland
Hologic Finance Ltd.	Bermuda
Hologic France SARL	France
Hologic GGO 1, LLC	Delaware
Hologic GGO 2, LLC	Delaware
Hologic GGO 3 LLP	United Kingdom
Hologic GGO 4 Ltd	United Kingdom
Hologic GGO 5, LLC	Delaware
Hologic Hitec-Imaging GmbH	Germany
Hologic Hub LTD	United Kingdom
Hologic Hub LTD Singapore Branch	Singapore
Hologic Iberia, S.L.	Spain
Hologic International Holdings B.V.	Netherlands
Hologic IP LTD	United Kingdom
Hologic Italia S.r.l.	Italy
Hologic Japan KK	Japan

Subsidiaries of Hologic	Jurisdiction of Incorporation or Organization
Hologic Latin America (Servicos Em Marketing E Negocios) Ltda.	Brazil
Hologic Ltd.	United Kingdom
Hologic Medical Technologies (Beijing) Co., Ltd.	China
Hologic Middle East Dubai	United Arab Emirates
Hologic NV	Belgium
Hologic Netherlands B.V.	Netherlands
Hologic SA	France
Hologic Suisse SA	Switzerland
Hologic Surgical Products Costa Rica, S.R.L.	Costa Rica
Hologic Sweden AB	Sweden
Hologic UK Finance Ltd.	United Kingdom
Jiangsu Kang Ke Medical Devices Co., Ltd.	China
Navigation Three Limited	Hong Kong
Sentinelle Medical Inc.	Canada
Suros Surgical Systems, Inc.	Delaware
TCT International Co., Ltd.	British Virgin Islands
Zheng Zhou Yong Run Medical Devices Co., Ltd.	China

EX-23.1

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the following Registration Statements:

(1) Registration Statement (Form S-8 No. 333-79167) pertaining to the Hologic, Inc. 1997 Employee Equity Incentive Plan and the Hologic, Inc. Amended and Restated 1999 Equity Incentive Plan,

(2) Registration Statement (Form S-8 No. 333-60046) pertaining to the Hologic, Inc. Amended and Restated 1999 Equity Incentive Plan, and the Hologic, Inc. 2000 Acquisition Equity Incentive Plan,

(3) Registration Statement (Form S-8 No. 333-112222) pertaining to the Hologic, Inc. Amended and Restated 1999 Equity Incentive Plan,

(4) Registration Statement (Form S-8 No. 333-121111) pertaining to the Hologic, Inc. Amended and Restated 1999 Equity Incentive Plan,

(5) Registration Statement (Form S-8 No. 333-130170) pertaining to the Hologic, Inc. Amended and Restated 1999 Equity Incentive Plan,

(6) Registration Statement (Form S-8 No. 333-139341) pertaining to the Hologic, Inc. Second Amended and Restated 1999 Equity Incentive Plan,

(7) Registration Statement (Form S-8 No. 333-146887) pertaining to the Cytyc Corporation 1995 Stock Plan, the Cytyc Corporation 1995 Non-Employee Director Stock Option Plan, the Cytyc Corporation 2004 Omnibus Stock Plan, and the Hologic, Inc. Second Amended and Restated 1999 Equity Incentive Plan,

(8) Registration Statement (Form S-3ASR No. 333-192544) pertaining to Hologic, Inc.’s shelf registration statement for common stock, preferred stock, debt securities, rights, warrants, purchase contracts, units or any combination of the foregoing,

(9) Registration Statement (Form S-8 No. 333-150796) pertaining to the Hologic, Inc. 2008 Equity Incentive Plan, Hologic, Inc.’s two-for-one stock split in the form of a dividend of one share of common stock for each share of common stock outstanding as of March 21, 2008 and the adjustment of shares registered under Hologic, Inc.’s Stock Plans,

(10) Registration Statement (Form S-8 No. 333-181126) pertaining to the Hologic, Inc. 2012 Employee Stock Purchase Plan, as amended,

(11) Registration Statement (Form S-8 No. 333-183019) pertaining to the 2003 Incentive Award Plan of Gen-Probe Incorporated,

(12) Registration Statement (Form S-8 No. 333-188468) pertaining to the Hologic, Inc. Amended and Restated 2008 Equity Incentive Plan.

of our reports dated November 17, 2016, with respect to the consolidated financial statements of Hologic, Inc. and the effectiveness of internal control over financial reporting of Hologic, Inc., included in this Annual Report (Form 10-K) of Hologic, Inc. for the year ended September 24, 2016.

/s/ Ernst & Young LLP

Boston, Massachusetts

November 17, 2016

EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Stephen P. MacMillan, certify that:

1. I have reviewed this annual report on Form 10-K of Hologic, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 17, 2016

/s/    Stephen P. MacMillan        

Stephen P. MacMillan

Chairman, President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Robert W. McMahon, certify that:

1. I have reviewed this annual report on Form 10-K of Hologic, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 17, 2016

/s/    Robert W. McMahon

Robert W. McMahon

Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

I, Stephen P. MacMillan, Chief Executive Officer of Hologic, Inc., a Delaware corporation (the “Company”), do hereby certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), that:

(1) The Annual Report on Form 10-K for the year ended September 24, 2016 (the “Form 10-K”) of the Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Form 10-K fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: November 17, 2016	/s/    Stephen P. MacMillan
	Stephen P. MacMillan
	Chairman, President and Chief Executive Officer

A SIGNED ORIGINAL OF THIS WRITTEN STATEMENT REQUIRED BY SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 HAS BEEN PROVIDED TO HOLOGIC, INC. AND WILL BE RETAINED BY HOLOGIC, INC. AND FURNISHED TO THE SECURITIES AND EXCHANGE COMMISSION OR ITS STAFF UPON REQUEST.

EX-32.2

Exhibit 32.2

Certification

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

(Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code)

I, Robert W. McMahon, Chief Financial Officer of Hologic, Inc., a Delaware corporation (the “Company”), do hereby certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), that:

(1) The Annual Report on Form 10-K for the year ended September 24, 2016 (the “Form 10-K”) of the Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Form 10-K fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: November 17, 2016	/s/    Robert W. McMahon
	Robert W. McMahon
	Chief Financial Officer

A SIGNED ORIGINAL OF THIS WRITTEN STATEMENT REQUIRED BY SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 HAS BEEN PROVIDED TO HOLOGIC, INC. AND WILL BE RETAINED BY HOLOGIC, INC. AND FURNISHED TO THE SECURITIES AND EXCHANGE COMMISSION OR ITS STAFF UPON REQUEST.

XML

Document and Entity Information - USD ($)	12 Months Ended
	Sep. 24, 2016	Nov. 11, 2016	Mar. 26, 2016
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Sep. 24, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Entity Registrant Name	HOLOGIC INC
Entity Central Index Key	0000859737
Current Fiscal Year End Date	--09-24
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		278,215,876
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 9,587,876,939

XML

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Revenues:
Product	$ 2,379.0	$ 2,270.4	$ 2,094.9
Service and other	453.7	434.6	435.8
Revenues	2,832.7	2,705.0	2,530.7
Costs of revenues:
Product	756.8	755.5	731.3
Amortization of intangible assets	293.4	299.7	314.6
Impairment of intangible assets	0.0	0.0	26.6
Service and other	219.2	217.1	212.7
Gross Profit	1,563.3	1,432.7	1,245.5
Operating expenses:
Research and development	232.1	214.9	203.2
Selling and marketing	415.1	363.0	331.7
General and administrative	267.3	261.0	259.8
Amortization of intangible assets	89.7	110.2	113.8
Impairment of intangible assets	0.0	0.0	5.6
Restructuring and divestiture charges	10.5	28.5	51.7
Operating expenses	1,014.7	977.6	965.8
Income from operations	548.6	455.1	279.7
Interest income	0.7	1.3	1.3
Interest expense	(155.3)	(205.5)	(220.6)
Debt extinguishment loss	(5.3)	(62.7)	(7.4)
Other income (expense), net	26.6	(11.0)	(4.9)
Income before income taxes	415.3	177.2	48.1
Provision for income taxes	84.5	45.6	30.8
Net income	$ 330.8	$ 131.6	$ 17.3
Net income per common share:
Basic (in dollars per share)	$ 1.18	$ 0.47	$ 0.06
Diluted (in dollars per share)	$ 1.16	$ 0.45	$ 0.06
Weighted average number of shares outstanding:
Basic (in shares)	280,213	280,566	275,499
Diluted (in shares)	286,156	289,537	278,360

XML

Consolidated Statements of Comprehensive Loss - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 330.8	$ 131.6	$ 17.3
Changes in foreign currency translation adjustment, including amounts reclassified from AOCI	(10.4)	(11.0)	(13.3)
Other Comprehensive Income (Loss) available-for-sale securities adjustments including amounts reclassified from AOCI	(1.1)	(2.0)	(3.2)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	(6.1)	0.0	0.0
Changes in pension plans, net of taxes of $0.3 in 2016, $0.3 in 2015, and $0.2 in 2014	(0.7)	(0.2)	(1.3)
Changes in value of hedged interest rate caps, net of tax of $2.0 in 2016 and $2.5 in 2015:	3.4	3.9	0.0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	3.9	0.0	0.0
Other comprehensive loss	(17.8)	(17.1)	(17.8)
Comprehensive income (loss)	$ 313.0	$ 114.5	$ (0.5)

XML

Consolidated Statements of Comprehensive Loss (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Statement of Comprehensive Income [Abstract]
Changes in pension plans, tax	$ 0.3	$ 0.3	$ 0.2
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	$ 2.0	$ 2.5	$ 0.0

XML

Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 24, 2016	Sep. 26, 2015
Current assets:
Cash and cash equivalents	$ 548.4	$ 491.3
Restricted cash	0.0	1.4
Accounts receivable, less reserves of $12.7 and $11.1, respectively	447.0	416.1
Inventories	274.7	283.1
Deferred income tax assets	0.0	19.0
Prepaid income taxes	16.9	21.7
Prepaid expenses and other current assets	39.6	33.2
Total current assets	1,326.6	1,265.8
Property, plant and equipment, net	460.2	457.1
Intangible assets, net	2,643.4	3,023.2
Goodwill	2,803.1	2,808.2
Other assets	83.7	88.2
Total assets	7,317.0	7,642.5
Current liabilities:
Current portion of long-term debt	296.0	391.2
Accounts payable	156.9	117.0
Accrued expenses	287.6	272.1
Deferred revenue	161.4	163.1
Total current liabilities	901.9	943.4
Long-term debt, net of current portion	3,049.4	3,221.0
Deferred income tax liabilities	982.6	1,178.4
Deferred revenue	15.9	19.6
Other long-term liabilities	224.5	200.9
Commitments and contingencies (Note 10)
Stockholders’ equity:
Preferred stock, $0.01 par value – 1,623 shares authorized; 0 shares issued	0.0	0.0
Common stock, $0.01 par value – 750,000 shares authorized; 285,015 and 282,495 shares issued, respectively	2.9	2.8
Additional paid-in-capital	5,560.3	5,559.9
Accumulated deficit	(3,138.2)	(3,469.0)
Treasury stock, at cost – 7,289 shares at September 24, 2016	(250.0)	0.0
Accumulated other comprehensive loss	(32.3)	(14.5)
Total stockholders’ equity	2,142.7	2,079.2
Total liabilities and stockholders’ equity	$ 7,317.0	$ 7,642.5

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Millions	Sep. 24, 2016	Sep. 26, 2015
Statement of Financial Position [Abstract]
Accounts receivable, reserves	$ 12.7	$ 11.1
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	1,623	1,623
Preferred stock, issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	750,000	750,000
Common stock, issued (in shares)	285,015	282,495
Treasury Stock, Shares	7,289

XML

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Millions	Total	Common Stock [Member]	Additional Paid-in-Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income [Member]	Accumulated Translation Adjustment [Member]	Treasury Stock [Member]
Balance at Sep. 28, 2013	$ 1,941.5	$ 2.7	$ 5,536.3	$ (3,616.4)	$ 20.4		$ (1.5)
Balance (in shares) at Sep. 28, 2013		272,036					219
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options	70.6	$ 0.1	70.5
Exercise of stock options (in shares)		4,697
Issuance of common stock to employees upon vesting of restricted stock units, net of shares withheld for employee taxes	(9.8)		(9.8)
Issuance of common stock to employees upon vesting of restricted stock units, net of shares withheld for employee taxes (in shares)		846
Issuance of common stock under the employee stock purchase plan	10.9		10.9
Issuance of common shares under the employee stock purchase plan (in shares)		612
Stock-based compensation expense	49.5		49.5
Excess tax benefit from employee equity awards	0.8		0.8
Net income	17.3
Foreign currency translation adjustment	13.3				13.3
Adjustment to minimum pension liability, net	(1.3)				(1.3)
Payments for Repurchase of Common Stock	0.0
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	0.0
Retirement of treasury shares	0.0			(1.5)			$ 1.5
Retirement of treasury shares (in shares)		(219)					(219)
Unrealized losses on marketable securities	(3.2)				(3.2)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	0.0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	0.0
Balance at Sep. 27, 2014	2,063.0	$ 2.8	5,658.2	(3,600.6)	2.6		$ 0.0
Balance (in shares) at Sep. 27, 2014		277,972					0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options	57.3		57.3
Exercise of stock options (in shares)		3,036
Issuance of common stock to employees upon vesting of restricted stock units, net of shares withheld for employee taxes	(12.9)		(12.9)
Issuance of common stock to employees upon vesting of restricted stock units, net of shares withheld for employee taxes (in shares)		949
Issuance of common stock under the employee stock purchase plan	12.0		12.0
Issuance of common shares under the employee stock purchase plan (in shares)		538
Stock-based compensation expense	54.6		54.6
Excess tax benefit from employee equity awards	7.6		7.6
Reacquisition of equity component from convertible notes repurchase, net of taxes	(216.9)		(216.9)
Net income	131.6
Foreign currency translation adjustment	20.6				20.6
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	17.4				7.8	$ 9.6
Adjustment to minimum pension liability, net	(0.2)				(0.2)
Payments for Repurchase of Common Stock	0.0
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	3.9				(3.9)
Unrealized losses on marketable securities	(9.8)				(9.8)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	0.0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	0.0
Balance at Sep. 26, 2015	2,079.2	$ 2.8	5,559.9	(3,469.0)	(14.5)		$ 0.0
Balance (in shares) at Sep. 26, 2015		282,495					0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other than temporary impairment	7.8
Exercise of stock options	$ 24.1	$ 0.1	24.0
Exercise of stock options (in shares)	1,200	1,233
Issuance of common stock to employees upon vesting of restricted stock units, net of shares withheld for employee taxes	$ (16.4)		(16.4)
Issuance of common stock to employees upon vesting of restricted stock units, net of shares withheld for employee taxes (in shares)		820
Issuance of common stock under the employee stock purchase plan	14.4		14.4
Issuance of common shares under the employee stock purchase plan (in shares)		467
Stock-based compensation expense	62.3		62.3
Excess tax benefit from employee equity awards	10.5		10.5
Reacquisition of equity component from convertible notes repurchase, net of taxes	(94.4)		(94.4)
Net income	330.8
Foreign currency translation adjustment	10.4				10.4
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(2.2)					$ 0.0
Adjustment to minimum pension liability, net	(0.7)				(0.7)
Stock Repurchased During Period, Shares							7,289
Payments for Repurchase of Common Stock	(250.0)						$ 250.0
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	3.4				(3.4)
Unrealized losses on marketable securities	(1.1)				(1.1)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	3.9				3.9
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	(6.1)				(6.1)
Balance at Sep. 24, 2016	$ 2,142.7	$ 2.9	$ 5,560.3	$ (3,138.2)	$ (32.3)		$ (250.0)
Balance (in shares) at Sep. 24, 2016		285,015					7,289

XML

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
OPERATING ACTIVITIES
Net income	$ 330.8	$ 131.6	$ 17.3
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	82.3	81.5	94.7
Amortization	383.1	409.9	428.5
Non-cash interest expense	52.1	63.8	68.7
Stock-based compensation expense	65.4	59.3	50.0
Excess tax benefit related to equity awards	(11.0)	(10.7)	(5.7)
Deferred income taxes	(155.8)	(148.8)	(243.1)
Gain on sale of available-for-sale marketable security	(25.1)	0.0	0.0
Asset impairment charges	0.0	0.0	38.4
Debt extinguishment losses	(5.3)	(62.7)	(7.4)
Equity investment impairment charges	1.1	7.8	6.9
Loss on disposal of property and equipment	5.5	6.6	7.1
Loss on sale of businesses	0.0	9.6	5.5
Other adjustments and non-cash items	(2.9)	14.3	(11.8)
Changes in operating assets and liabilities:
Accounts receivable	(31.8)	(30.3)	7.9
Inventories	7.6	43.9	(44.7)
Prepaid income taxes	4.7	0.7	22.4
Prepaid expenses and other assets	(4.9)	5.7	17.3
Accounts payable	40.1	25.5	11.8
Accrued expenses and other liabilities	45.6	36.9	14.7
Deferred revenue	(4.9)	16.1	15.1
Net cash provided by operating activities	787.2	786.1	508.4
INVESTING ACTIVITIES
Net proceeds from sale of business	0.0	0.0	10.1
Purchase of property and equipment	(47.3)	(48.1)	(44.3)
Increase in equipment under customer usage agreements	47.2	41.3	(35.9)
Proceeds from sale of available-for-sale marketable security	31.1	0.0	0.0
Net (purchases) sales of insurance contracts	5.2	6.4	13.8
Purchases of mutual funds	0.0	0.0	(29.7)
Sales of mutual funds	5.2	10.0	22.4
Purchase of intellectual property	4.0	0.0	0.0
Increase in other assets	1.0	0.3	(3.4)
Net cash used in investing activities	(68.4)	(86.1)	(67.0)
FINANCING ACTIVITIES
Proceeds from long-term debt	0.0	2,495.1	0.0
Repayment of long-term debt	(75.0)	(3,095.0)	(595.0)
Payments to extinguish convertible notes	(392.8)	(543.7)	0.0
Proceeds from Lines of Credit	50.0	358.0	0.0
Repayments of Lines of Credit	(225.0)	(183.0)	0.0
Proceeds from accounts receivable securitization agreement	200.0	0.0	0.0
Repurchase of common stock	250.0	0.0	0.0
Payment of debt issuance costs	0.0	(22.7)	(2.4)
Interest Rate Cap Agreements Aggregate Premium Payable	0.0	(13.2)	0.0
Payment of deferred acquisition consideration	0.0	0.0	(5.0)
Net proceeds from issuance of common stock pursuant to employee stock plans	38.5	70.0	81.4
Excess tax benefit related to equity awards	11.0	10.7	5.7
Payment of minimum tax withholdings on net share settlements of equity awards	16.4	12.9	(9.8)
Net cash used in financing activities	(659.7)	(936.7)	(525.1)
Effect of exchange rate changes on cash and cash equivalents	(2.0)	(8.1)	(2.7)
Net increase (decrease) in cash and cash equivalents	57.1	(244.8)	(86.4)
Cash and cash equivalents, beginning of period	491.3	736.1	822.5
Cash and cash equivalents, end of period	$ 548.4	$ 491.3	$ 736.1

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Operations

12 Months Ended

Sep. 24, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Operations

Operations

Hologic, Inc. (the “Company” or “Hologic”) develops, manufactures and supplies premium diagnostics products, medical imaging systems and surgical products with an emphasis on women's health. The Company operates in four segments: Diagnostics, Breast Health, GYN Surgical and Skeletal Health.

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Summary of Significant Accounting Policies

12 Months Ended

Sep. 24, 2016

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Principles of Consolidation

The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. The Company’s fiscal year ends on the last Saturday in September. Fiscal 2016, 2015 and 2014 ended on September 24, 2016, September 26, 2015 and September 27, 2014, respectively.

Management’s Estimates and Uncertainties

The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("GAAP") requires management to make significant estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Significant estimates and assumptions by management affect the Company’s revenue recognition for multiple element arrangements, allowance for doubtful accounts, the net realizable value of inventory, estimated fair value of cost-method equity investments, valuations, purchase price allocations and contingent consideration related to business combinations, expected future cash flows including growth rates, discount rates, terminal values and other assumptions and estimates used to evaluate the recoverability of long-lived assets and goodwill, estimated fair values of intangible assets and goodwill, amortization methods and periods, warranty reserves, certain accrued expenses, restructuring and other related charges, stock-based compensation, contingent liabilities, tax reserves, deferred tax rates and recoverability of the Company’s net deferred tax assets and related valuation allowances.

Although the Company regularly assesses these estimates, actual results could differ materially from these estimates. Changes in estimates are recorded in the period in which they become known. The Company bases its estimates on historical experience and various other assumptions that it believes to be reasonable under the circumstances.

The Company is subject to a number of risks similar to those of other companies of similar size in its industry, including dependence on third-party reimbursements to support the markets of the Company’s products, early stage of development of certain products, rapid technological changes, recoverability of long-lived assets (including intangible assets and goodwill), competition, stability of world financial markets, ability to obtain regulatory approvals, changes in the regulatory environment, limited number of suppliers, customer concentration, integration of acquisitions, substantial indebtedness, government regulations, management of international activities, protection of proprietary rights, patent and other litigation, dependence on contract manufacturers and dependence on key individuals.

Cash Equivalents

Cash equivalents are highly liquid investments with insignificant interest rate risk and maturities of three months or less at the time of acquisition.

Marketable Securities

The Company’s marketable securities as of September 24, 2016 are comprised of solely of equity securities and as of September 26, 2015 also included mutual funds. The equity securities are investments in the common stock of publicly traded companies, and the mutual funds were used to fund a portion of the Company's deferred compensation plan. The equity securities are classified as available-for-sale and are recorded at fair value with the unrealized gains or losses, net of tax, within accumulated other comprehensive income (loss), which is a component of stockholders’ equity. The mutual funds were classified as trading and recorded at fair value with unrealized gains and losses recorded in other income (expense), net in the Consolidated Statements of Income.

The Company periodically reviews its marketable equity securities classified as available-for-sale for other-than-temporary declines in fair value below carrying value, or whenever events or circumstances indicate that the carrying amount of an asset may not be recoverable. The determination that a decline is other-than-temporary is, in part, subjective and influenced by many factors. When assessing marketable equity securities for other-than-temporary declines in fair value, the Company considers factors including: the significance of the decline in value compared to the carrying value; the underlying factors contributing to a decline in the price of the security; how long the market value of the investment has been less than its carrying value; any market conditions that impact liquidity; the views of external investment analysts; the financial condition and near-term prospects of the investee; any news or financial information that has been released specific to the investee; and the outlook for the overall industry in which the investee operates. In the fourth quarters of fiscal 2016 and 2015, the Company concluded that the decline in fair value of one of its marketable securities was other-than-temporary based on the length of time the security's market value was significantly below its carrying value and recorded impairment charges of $1.1 million and $7.8 million, respectively.

The following reconciles cost basis to fair market value.

	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Other Than Temporary Impairment			Fair Value
As of September 24, 2016	$	2.4	$	—	$	(0.3	)	$	(1.1	)	$	1.0
As of September 26, 2015	$	16.1	$	7.2	$	(0.3	)	$	(7.8	)	$	15.2
As of September 27, 2014	$	15.5	$	10.2	$	(1.3	)	$	—		$	24.4

In the first quarter of fiscal 2016, the Company sold all of its shares in one of its marketable securities and recorded a realized gain of $25.1 million in Other income (expense), net.

Concentrations of Credit Risk

Financial instruments that subject the Company to credit risk primarily consist of cash and cash equivalents, cost-method equity investments, and trade accounts receivable. The Company invests its cash and cash equivalents with high credit quality financial institutions.

The Company’s customers are principally located in the United States, Europe and Asia. The Company performs ongoing credit evaluations of the financial condition of its customers and generally does not require collateral. Although the Company is directly affected by the overall financial condition of the healthcare industry, as well as global economic conditions, management does not believe significant credit risk exists as of September 24, 2016. The Company generally has not experienced any material losses related to receivables from individual customers or groups of customers in the healthcare industry. The Company maintains an allowance for doubtful accounts based on accounts past due and historical collection experience.

There were no customers with balances greater than 10% of accounts receivable as of September 24, 2016 and September 26, 2015, or any customers that represented greater than 10% of consolidated revenues for fiscal years 2016, 2015 and 2014 (see Note 13).

Supplemental Cash Flow Statement Information

	Years ended
	September 24, 2016		September 26, 2015		September 27, 2014
Cash paid during the period for income taxes	$	184.8	$	168.7	$	231.8
Cash paid during the period for interest	$	104.0	$	143.0	$	155.7

Inventories

Inventories are valued at the lower of cost or market on a first in, first out basis. Work-in-process and finished goods inventories consist of materials, labor and manufacturing overhead. The valuation of inventory requires management to estimate excess and obsolete inventory. The Company employs a variety of methodologies to determine the net realizable value of its inventory. Provisions for excess and obsolete inventory are primarily based on management’s estimates of forecasted sales, usage levels and expiration dates, as applicable for disposable products. A significant change in the timing or level of demand for the Company’s products compared to forecasted amounts may result in recording additional charges for excess and obsolete inventory in the future. The Company records charges for excess and obsolete inventory within cost of product revenues.

Inventories consisted of the following:

	September 24, 2016		September 26, 2015
Raw materials	$	96.4	$	98.3
Work-in-process	51.7		58.7
Finished goods	126.6		126.1
	$	274.7	$	283.1

Property, Plant and Equipment

Property, plant and equipment is recorded at cost less allowances for depreciation. The straight-line method of depreciation is used for all property and equipment.

Property, plant and equipment consisted of the following:

	September 24, 2016			September 26, 2015
Equipment and software	$	381.9		$	365.9
Equipment under customer usage agreements	334.6			305.7
Buildings and improvements	186.1			182.1
Leasehold improvements	65.6			59.2
Land	51.9			51.4
Furniture and fixtures	18.4			17.3
	1,038.5			981.6
Less - accumulated depreciation and amortization	(578.3		)	(524.5		)
	$	460.2		$	457.1

Property, plant and equipment are depreciated over the following estimated useful lives:

Asset Classification	Estimated Useful Life
Building and improvements	35–40 years
Equipment and software	3–10 years
Equipment under customer usage agreements	3–8 years
Furniture and fixtures	5–7 years
Leasehold improvements	Shorter of the Original Term of Lease or Estimated Useful Life

Equipment under customer usage agreements primarily consists of diagnostic instrumentation and imaging equipment located at customer sites but owned by the Company. Generally, the customer has the right to use the equipment for a period of time provided they meet certain agreed to conditions. The Company recovers the cost of providing the equipment from the sale of disposables. The depreciation costs associated with equipment under customer usage agreements are charged to cost of product revenues over the estimated useful life of the equipment. The costs to maintain the equipment in the field are charged to cost of product revenue as incurred.

Long-Lived Assets

The Company reviews its long-lived assets, which includes property, plant and equipment and identifiable intangible assets (see below for discussion of intangible assets), for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable in accordance with ASC 360-10-35-15, Property, Plant and Equipment—Impairment or Disposal of Long-Lived Assets (ASC 360). Recoverability of these assets is evaluated by comparing the carrying value of the assets to the undiscounted cash flows estimated to be generated by those assets over their remaining economic life. If the undiscounted cash flows are not sufficient to recover the carrying value of the assets, the assets are considered impaired. The impairment loss is measured by comparing the fair value of the assets to their carrying value. Fair value is determined by either a quoted market price, if any, or a value determined by a discounted cash flow technique.

In the second quarter of fiscal 2014, the Company evaluated its MRI breast coils product line asset group, which was within its Breast Health segment, for impairment due to the Company’s expectation that it would be sold or disposed of significantly before the end of its previously estimated useful life. At this time, the undiscounted cash flows expected to be generated by this asset group over its estimated remaining useful life were not sufficient to recover its carrying value. The Company estimated the fair value of the asset group using market participant assumptions, which were based on underlying cash flow estimates, resulting in an impairment charge of $28.6 million. Pursuant to ASC 360 subtopic 10-35-28, the impairment charge was allocated to the long-lived assets with $27.1 million to intangible assets and $1.5 million to property and equipment. The property and equipment charge was recorded to cost of product revenues and general and administrative expenses in the amounts of $0.3 million and $1.2 million, respectively. The Company believes this adjustment falls within Level 3 of the fair value hierarchy. The Company completed the sale of this product line in the fourth quarter of fiscal 2014 (see Note 3).

In the first quarter of fiscal 2014, the Company recorded a $3.1 million impairment charge to record certain of its buildings at fair value related to the shutdown of its Hitec Imaging organic photoconductor manufacturing line (see Note 3).

Business Combinations and Acquisition of Intangible Assets

The Company records tangible and intangible assets acquired in business combinations under the purchase method of accounting. The Company accounts for acquisitions in accordance with ASC 805, Business Combinations (ASC 805). Amounts paid for each acquisition are allocated to the assets acquired and liabilities assumed based on their fair values at the dates of acquisition. The Company allocates the purchase price in excess of the fair value of the net tangible assets acquired to identifiable intangible assets, including purchased research and development, based on detailed valuations that use certain information and assumptions provided by management. The Company allocates any excess purchase price over the fair value of the net tangible and intangible assets acquired to goodwill. The use of alternative valuation assumptions, including estimated cash flows and discount rates, and alternative useful life assumptions could result in different purchase price allocations and intangible asset amortization expense in current and future periods.

The Company uses the income approach to determine the fair value of developed technology and in-process research and development ("IPR&D") acquired in a business combination. This approach determines fair value by estimating the after-tax cash flows attributable to the respective asset over its useful life and then discounting these after-tax cash flows back to a present value. The Company bases its revenue assumptions on estimates of relevant market sizes, expected market growth rates, expected trends in technology and expected product introductions by competitors. Developed technology represents patented and unpatented technology and know-how. Regarding the value of the in-process projects, the Company considers, among other factors, the in-process projects’ stage of completion, the complexity of the work completed as of the acquisition date, the projected costs to complete, the contribution of core technologies and other acquired assets, the expected introduction date and the estimated useful life of the technology. The Company believes that the estimated developed technology and IPR&D amounts represent the fair value at the date of acquisition and do not exceed the amount a third-party would pay for the assets.

The Company also uses the income approach, as described above, to determine the estimated fair value of certain other identifiable intangible assets including customer relationships, trade names and business licenses. Customer relationships represent established relationships with customers, which provide a ready channel for the sale of additional products and services. Trade names represent acquired company and product names.

Intangible Assets and Goodwill

Intangible Assets

Intangible assets are initially recorded at fair value and stated net of accumulated amortization and impairments. The Company amortizes its intangible assets that have finite lives using either the straight-line method, or if reliably determinable, based on the pattern in which the economic benefit of the asset is expected to be utilized. Amortization is recorded over the estimated useful lives ranging from 2 to 30 years. The Company evaluates the realizability of its definite lived intangible assets whenever events or changes in circumstances or business conditions indicate that the carrying value of these assets may not be recoverable based on expectations of future undiscounted cash flows for each asset group. If the carrying value of an asset or asset group exceeds its undiscounted cash flows, the Company estimates the fair value of the assets, generally utilizing a discounted cash flow analysis based on the present value of estimated future cash flows to be generated by the assets using a risk-adjusted discount rate. To estimate the fair value of the assets, the Company uses market participant assumptions pursuant to ASC 820, Fair Value Measurements.

Indefinite lived intangible assets, such as IPR&D assets, are required to be tested for impairment annually, or more frequently if indicators of impairment are present. The Company’s annual impairment test date is as of the first day of its fourth quarter.

During the fourth quarter of fiscal 2014, the Company recorded impairment charges of $5.1 million for a reduction in fair value of its remaining IPR&D assets. The reduction in fair value was primarily due to lower revenue projections of the respective products compared to those estimated at the time of the Gen-Probe acquisition.

During the second quarter of fiscal 2014, the Company recorded impairment charges of $26.6 million and $0.5 million to developed technology and trade names, respectively, related to its MRI breast coils product line discussed above. In addition, the Company periodically re-evaluates the lives of its definite-lived intangible assets, and in the second quarter of fiscal 2014 shortened the life of certain corporate trade names, which were phased out.

Intangible assets consisted of the following:

	September 24, 2016				September 26, 2015
Description	Gross Carrying Value		Accumulated Amortization		Gross Carrying Value		Accumulated Amortization
Developed technology	$	3,983.7	$	1,991.6	$	3,979.1	$	1,698.5
In-process research and development	3.7		—		3.7		—
Customer relationships and contracts	1,098.9		546.2		1,101.1		467.5
Trade names	236.2		141.6		236.4		131.5
Business licenses	2.4		2.1		2.5		2.1
	$	5,324.9	$	2,681.5	$	5,322.8	$	2,299.6

In the third quarter of fiscal 2016, the Company accelerated the amortization of the Cystic Fibrosis developed technology asset of $6.2 million as a result of discontinuing this product line.

In the second quarter of fiscal 2016, the Company acquired certain intellectual property for $4.8 million, which was recorded in developed technology.

Amortization expense related to developed technology is classified as a component of cost of product revenues—amortization of intangible assets. Amortization expense related to customer relationships and contracts, trade names, and business licenses is classified as a component of amortization of intangible assets within operating expenses.

The estimated amortization expense at September 24, 2016 for each of the five succeeding fiscal years was as follows:

Fiscal 2017	$	365.8
Fiscal 2018	$	355.0
Fiscal 2019	$	343.1
Fiscal 2020	$	331.4
Fiscal 2021	$	312.0

Goodwill

In accordance with ASC 350, Intangibles—Goodwill and Other (ASC 350), the Company tests goodwill for impairment at the reporting unit level on an annual basis and between annual tests if events and circumstances indicate it is more likely than not that the fair value of a reporting unit is less than its carrying value. Events that could indicate impairment and trigger an interim impairment assessment include, but are not limited to, current economic and market conditions, including a decline in market capitalization, a significant adverse change in legal factors, business climate, operational performance of the business or key personnel, and an adverse action or assessment by a regulator.

In performing the impairment test, the Company utilizes the two-step approach prescribed under ASC 350. The first step requires a comparison of the carrying value of each reporting unit to its estimated fair value. To estimate the fair value of its reporting units for Step 1, the Company primarily utilizes the income approach. The income approach is based on a DCF analysis and calculates the fair value by estimating the after-tax cash flows attributable to a reporting unit and then discounting the after-tax cash flows to a present value using a risk-adjusted discount rate. Assumptions used in the DCF require significant judgment, including judgment about appropriate discount rates and terminal values, growth rates, and the amount and timing of expected future cash flows. The forecasted cash flows are based on the Company’s most recent budget and strategic plan and for years beyond this period, the Company’s estimates are based on assumed growth rates expected as of the measurement date. The Company believes its assumptions are consistent with the plans and estimates used to manage the underlying businesses. The discount rates used are intended to reflect the risks inherent in future cash flow projections and are based on estimates of the weighted-average cost of capital (“WACC”) of market participants relative to each respective reporting unit. The market approach considers comparable market data based on multiples of revenue or earnings before interest, taxes, depreciation and amortization (“EBITDA”) and is primarily used as a corroborative analysis to the results of the DCF analysis. The Company believes its assumptions used to determine the fair value of its reporting units are reasonable. If different assumptions were used, particularly with respect to forecasted cash flows, terminal values, WACCs, or market multiples, different estimates of fair value may result and there could be the potential that an impairment charge could result. Actual operating results and the related cash flows of the reporting units could differ from the estimated operating results and related cash flows.

If the carrying value of a reporting unit exceeds its estimated fair value, the Company is required to perform the second step of the goodwill impairment test to measure the amount of impairment loss, if any. The second step of the goodwill impairment test compares the implied fair value of a reporting unit’s goodwill to its carrying value. The implied fair value of goodwill is derived by performing a hypothetical purchase price allocation for each reporting unit as of the measurement date and allocating the reporting unit’s estimated fair value to its assets and liabilities. The residual amount from performing this allocation represents the implied fair value of goodwill. To the extent this amount is below the carrying value of goodwill, an impairment charge is recorded.

The Company conducted its fiscal 2016 impairment test on the first day of the fourth quarter, and as noted above used DCF and market approaches to estimate the fair value of its reporting units as of June 26, 2016, and ultimately used the fair value determined by the DCF approach in making its impairment test conclusions. The Company believes it used reasonable estimates and assumptions about future revenue, cost projections, cash flows, market multiples and discount rates as of the measurement date. As a result of completing Step 1, all of the Company's reporting units had fair values exceeding their carrying values, and as such, Step 2 of the impairment test was not required. For illustrative purposes, had the fair value of each of the reporting units that passed Step 1 been lower than 10%, all of the reporting units would still have passed Step 1 of the goodwill impairment test.

At September 24, 2016, the Company believes that each reporting unit, with goodwill aggregating $2.80 billion, was not at risk of failing Step 1 of the goodwill impairment test based on the current forecasts.

The Company conducted its fiscal 2015 and 2014 impairment tests on the first day of the respective year's fourth quarter, and as noted above used DCF and market approaches to estimate the fair value of its reporting units as of June 28, 2015 and June 29, 2014, respectively, and ultimately used the fair value determined by the DCF approach in making its impairment test conclusions. The Company believes it used reasonable estimates and assumptions about future revenue, cost projections, cash flows, market multiples and discount rates as of the measurement date. As a result of completing Step 1, all of the Company's reporting units had fair values exceeding their carrying values, and as such, Step 2 of the impairment test was not required.

A rollforward of goodwill activity by reportable segment from September 26, 2015 to September 24, 2016 is as follows:

	Diagnostics			Breast Health		GYN Surgical			Skeletal Health		Total
Balance at September 26, 2015	$	1,152.3		$	631.8	$	1,016.0		$	8.1	$	2,808.2
Tax adjustments	(1.3		)	—		—			—		(1.3		)
Foreign currency and other	(2.8		)	—		(1.0		)	—		(3.8		)
Balance at September 24, 2016	$	1,148.2		$	631.8	$	1,015.0		$	8.1	$	2,803.1

Other Assets

Other assets consisted of the following:

	September 24, 2016		September 26, 2015
Other Assets
Life insurance contracts	$	36.0	$	27.5
Manufacturing access fees	9.6		11.6
Derivative assets	0.4		6.2
Mutual funds	—		5.6
Marketable securities	1.0		15.2
Cost-method equity investments	3.5		4.2
Deferred tax assets	9.3		—
Other	23.9		17.9
	$	83.7	$	88.2

Life insurance contracts were purchased in connection with the Company’s Nonqualified Deferred Compensation Plan (“DCP”) and are recorded at their cash surrender value (see Note 9 for further discussion). The manufacturing access fees are related to a manufacturing supply and purchase agreement for our Aptima HPV products and are being amortized over the term of the agreement.

The Company’s cost-method equity investments are carried at cost as the Company owns less than 20% of the voting equity and does not have the ability to exercise significant influence over these companies. The Company regularly evaluates the carrying value of its cost-method equity investments for impairment and whether any events or circumstances are identified that would significantly harm the fair value of the investment. The primary indicators the Company utilizes to identify these events and circumstances are the investee’s ability to remain in business, such as the investee’s liquidity and rate of cash use, and the investee’s ability to secure additional funding and the investee valuation as determined by that additional funding. In the event a decline in fair value is judged to be other-than-temporary, the Company will record an other-than-temporary impairment charge in other income (expense), net in the Consolidated Statements of Operations. During fiscal 2014, the Company recorded other-than-temporary impairment charges of $6.9 million related to certain of its cost-method equity investments to adjust their carrying amounts to fair value. No such charges were recorded in fiscal 2016 or 2015 for cost-method equity investments.

Research and Software Development Costs

Costs incurred for the research and development of the Company’s products are expensed as incurred. Nonrefundable advance payments for goods or services to be received in the future by the Company for use in research and development activities are deferred. The deferred costs are expensed as the related goods are delivered or the services are performed.

The Company accounts for the development costs of software embedded in the Company’s products in accordance with ASC 985, Software. Costs incurred in the research, design and development of software embedded in products to be sold to customers are charged to expense until technological feasibility of the ultimate product to be sold is established. The Company’s policy is that technological feasibility is achieved when a working model, with the key features and functions of the product, is available for customer testing. Software development costs incurred after the establishment of technological feasibility and until the product is available for general release are capitalized, provided recoverability is reasonably assured. Software development costs eligible for capitalization have not been significant to date.

Foreign Currency Translation

The financial statements of the Company’s foreign subsidiaries are translated in accordance with ASC 830, Foreign Currency Matters. The reporting currency for the Company is the U.S. dollar. The functional currency of the Company’s foreign subsidiaries is determined based on the guidance in ASC 830. The majority of the Company's foreign subsidiaries' functional currency is the applicable local currency, although certain of the Company's foreign subsidiaries' functional currency is the U.S. dollar based on the nature of their operations or functions. Assets and liabilities of subsidiaries whose functional currency is the local currency are translated at the exchange rate in effect at each balance sheet date. Before translation, the Company re-measures foreign currency denominated assets and liabilities, including inter-company accounts receivable and payable, into the functional currency of the respective entity, resulting in unrealized gains or losses recorded in other income (expense), net in the Consolidated Statements of Income. Revenues and expenses are translated using average exchange rates during the respective period. Foreign currency translation adjustments are accumulated as a component of other comprehensive income (loss) as a separate component of stockholders’ equity. Gains and losses arising from transactions denominated in foreign currencies are included in other income (expense), net in the Consolidated Statements of Income and were not significant in any of the reporting periods presented.

Accumulated Other Comprehensive Income (Loss)

Other comprehensive income (loss) includes certain transactions that have generally been reported in the statement of stockholders’ equity. The following tables summarize the components and changes in accumulated balances of other comprehensive income for the periods presented:

	Year Ended September 24, 2016															Year Ended September 26, 2015
	Foreign Currency Translation			Marketable Securities			Pension Plans			Hedged Interest Rate Caps			Total			Foreign Currency Translation			Marketable Securities			Pension Plans			Hedged Interest Rate Caps			Total
Beginning Balance	$	(15.7	)	$	6.9		$	(1.8	)	$	(3.9	)	$	(14.5	)	$	(4.7	)	$	8.9		$	(1.6	)	$	—		$	2.6
Other comprehensive loss before reclassifications	(10.4		)	(1.1		)	(0.7		)	(3.4		)	(15.6		)	(20.6		)	(9.8		)	(0.2		)	(3.9		)	(34.5		)
(Gains) charges reclassified to statement of income	—			(6.1		)	—			3.9			(2.2		)	9.6			7.8			—			—			17.4
Ending Balance	$	(26.1	)	$	(0.3	)	$	(2.5	)	$	(3.4	)	$	(32.3	)	$	(15.7	)	$	6.9		$	(1.8	)	$	(3.9	)	$	(14.5	)

In the first quarter of fiscal 2016, the Company sold all of its shares in one of its marketable securities and recorded a realized gain of $25.1 million in other income (expense), net and resulted in reclassifying a $7.2 million gain out of other comprehensive income (loss) to other income (expense), net. In the fourth quarter of fiscal 2016, the Company recorded a $1.1 million other-than-temporary impairment charge and this amount was reclassified out of other comprehensive income (loss) to other income (expense), net.

During fiscal 2015, the Company reclassified $9.6 million out of accumulated other comprehensive income to restructuring and divestiture charges related to writing off the cumulative translation adjustment in connection with its substantial liquidation of the MRI breast coils product line (see Note 3). In addition, during fiscal 2015 the Company reclassified $7.8 million out of accumulated other comprehensive income to other (expense) income, net for the other-than-temporary impairment of a marketable security.

Derivatives

Interest Rate Cap - Cash Flow Hedge

The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company manages its exposure to some of its interest rate risk through the use of interest rate caps, which are derivative financial instruments. The Company does not use derivatives for speculative purposes. For a derivative that is designated as a cash flow hedge, changes in the fair value of the derivative are recognized in accumulated other comprehensive income ("AOCI") to the extent the derivative is effective at offsetting the changes in the cash flows being hedged until the hedged item affects earnings. To the extent there is any hedge ineffectiveness, changes in fair value relating to the ineffective portion are immediately recognized in earnings in other income (expense) in the Consolidated Statements of Income.

During fiscal 2015, the Company entered into separate interest rate cap agreements with multiple counter-parties to help mitigate the interest rate volatility associated with the variable rate interest on its credit facilities under its Prior Credit Agreement, which has been replaced by the new Credit Agreement (see Note 4). Interest rate cap agreements provide the right to receive cash if the reference interest rate rises above a contractual rate. The aggregate premium paid for the interest rate cap agreements was $13.2 million, which was the initial fair value of the instruments recorded in the Company's financial statements.

The critical terms of the interest rate caps were designed to mirror the terms of the Company’s LIBOR-based borrowings under the Prior Credit Agreement. The terms in the new Credit Agreement are consistent with the Prior Credit Agreement, and therefore the interest rate caps continue to be highly effective at offsetting the cash flows being hedged. The Company designated these derivatives as cash flow hedges of the variability of the LIBOR-based interest payments on $1.0 billion of principal over a three-year period, which ends on December 30, 2017.

As of September 24, 2016, the Company determined that the existence of hedge ineffectiveness, if any, was immaterial and all changes in the fair value of the interest rate caps were recorded in the Consolidated Statements of Comprehensive Income as a component of AOCI.

During fiscal 2016, $3.9 million was reclassified from AOCI to the Company's Consolidated Statements of Income related to the interest rate cap agreements. The Company expects to similarly reclassify approximately $6.9 million from AOCI to the Consolidated Statements of Income in the next twelve months.

The aggregate fair value of these interest rate caps was $1.4 million and $6.9 million at September 24, 2016 and September 26, 2015, respectively, and is included in both Prepaid expenses and other current assets and Other assets on the Company’s Consolidated Balance Sheet. Refer to Note 5 “Fair Value Measurements” below for related fair value disclosures.

Forward Foreign Currency Contracts

The Company enters into forward foreign currency exchange contracts to mitigate certain operational exposures from the impact of changes in foreign currency exchange rates. Such exposures result from the portion of the Company's operations that are denominated in currencies other than the U.S. dollar, primarily the Euro, the UK Pound, the Australian dollar, the Canadian dollar and the Japanese Yen. These foreign currency exchange contracts are entered into to support transactions made in the ordinary course of business and are not speculative in nature. The contracts are generally for periods of one year or less. During fiscal 2016, the Company began to execute forward foreign currency contracts in order to mitigate its exposure to fluctuations in various currencies against its reporting currency, the U.S. dollar. The Company did not elect hedge accounting for these forward foreign currency contracts; however, the Company may seek to apply hedge accounting in future scenarios. The change in the fair value of these contracts is recognized directly in earnings as a component of other income (expense), net. During fiscal 2016, the Company recorded a realized gain of $1.5 million from settling forward foreign currency contracts, and net unrealized losses of $1.1 million on outstanding contracts.

As of September 24, 2016, the Company had outstanding forward foreign currency contracts that were not designated for hedge accounting and are used to hedge fluctuations in the U.S dollar of forecasted transactions denominated in the Euro, UK Pound, Australian Dollar, Canadian Dollar and Japanese Yen with a notional amount of $165.0 million.

Financial Instrument Presentation

The table below presents the fair value of the Company's derivative financial instruments as well as their classification on the balance sheet as of September 24, 2016:

	Balance Sheet Location	September 24, 2016		September 26, 2015
Assets:
Derivative instruments designated as a cash flow hedge:
Interest rate cap agreements	Prepaid expenses and other current assets	$	1.0	$	0.7
Interest rate cap agreements	Other Assets	0.4		6.2
		$	1.4	$	6.9
Derivatives not designated as hedging instruments:
Forward foreign currency contracts	Prepaid expenses and other current assets	$	0.2	$	—
Liabilities:
Derivatives not designated as hedging instruments:
Forward foreign currency contracts	Accrued expenses	$	1.3	$	—

The following table presents the unrealized loss recognized in AOCI related to the interest rate caps for the following reporting periods:

	Year Ended September 24, 2016			Year Ended September 26, 2015
Amount of loss recognized in other comprehensive income, net of taxes:
Interest rate cap agreements	$	(3.4	)	$	(3.9	)

The following table presents the adjustment to fair value (realized and unrealized) recorded within the Consolidated Statements of Income for derivative instruments for which the Company did not elect hedge accounting:

Derivatives not classified as hedging instruments			Location of Gain (Loss) Recognized in Income
	Year Ended September 24, 2016
Forward foreign currency contracts	$	0.4	Other income (expense), net

Revenue Recognition

The Company generates revenue from the sale of its products, primarily medical imaging systems and diagnostic and surgical disposable products, and related services, which are primarily support and maintenance services on its medical imaging systems.

The Company recognizes product revenue upon shipment provided that there is persuasive evidence of an arrangement, there are no uncertainties regarding acceptance, the sales price is fixed or determinable, and collection of the resulting receivable is reasonably assured. Generally, the Company’s product arrangements for capital equipment sales, primarily in its Breast Health and Skeletal Health reporting segments, are multiple-element arrangements, including services, such as installation, training and support and maintenance, and multiple products. Based on the terms and conditions of the product arrangements, the Company believes that these services and undelivered products can be accounted for separately from the delivered product element as the Company’s delivered products have value to its customers on a stand-alone basis. Accordingly, revenue for services not yet performed at the time of product delivery are deferred and recognized as such services are performed. The relative selling price of any undelivered products is also deferred at the time of shipment and recognized as revenue when these products are delivered. There is no customer right of return in the Company’s sales agreements for its capital equipment.

Service revenues primarily consist of amounts recorded under service and maintenance contracts and repairs not covered under warranty, installation and training, and shipping and handling costs billed to customers. Service and maintenance contract revenues are recognized ratably over the term of the contract. Other service revenues are recognized as the services are performed.

For revenue arrangements with multiple deliverables, the Company records revenue as separate units of accounting if the delivered items have value to the customer on a stand-alone basis, and if the arrangement includes a general right of return relative to the delivered items, the delivery or performance of the undelivered items is considered probable and substantially within the Company’s control. Some of the Company’s products have both software and non-software components that function together to deliver the product’s essential functionality. The Company determined that except for its computer-aided detection (“CAD”) products and C-View product, the software element in its other products is incidental and not within the scope of the software revenue recognition rules, ASC 985-605, Software—Revenue Recognition. The Company determined that given the significance of the software component’s functionality to its CAD and C-View systems, which are sold by its Breast Health segment, these products are within the scope of the software revenue recognition rules. The Company evaluated the appropriate revenue recognition treatment of its other hardware products, including its Dimensions digital mammography systems, which have both software and non-software components that function together to deliver the products’ essential functionality (i.e., it is a tangible product), and determined they are not within the scope of ASC 985-605.

The Company is required to allocate revenue to its multiple element arrangements based on the relative fair value of each element’s selling price. The Company typically determines the selling price of its products based on its best estimate of selling prices (“ESP”) and services based on vendor-specific objective evidence of selling price (“VSOE”). The Company determines VSOE based on its normal pricing and discounting practices for the specific product or service when sold on a stand-alone basis. In determining VSOE, the Company’s policy requires a substantial majority of selling prices for a product or service to be within a reasonably narrow range. The Company also considers the class of customer, method of distribution, and the geographies into which its products and services are sold when determining VSOE. If VSOE cannot be established, which may occur in instances when a product or service has not been sold separately, stand-alone sales are too infrequent, or product pricing is not within a relatively narrow range, the Company will generally establish the selling price using ESP to allocate arrangement consideration. The objective of ESP is to determine the price at which the Company would typically transact a stand-alone sale of the product or service. ESP is determined by considering a number of factors including Company pricing policies, internal costs and gross margin objectives, method of distribution, information gathered from experience in customer negotiations, market research and information, recent technological trends, competitive landscape and geographies.

For those arrangements accounted for under the software revenue recognition rules, ASC 985-605 generally requires revenue earned on software arrangements involving multiple elements to be allocated to each element based on their relative VSOE of fair value. If VSOE does not exist for a delivered element, the residual method is applied in which the arrangement consideration is allocated to the undelivered elements based on their VSOE with the remaining consideration recognized as revenue for the delivered elements. For multiple-element software arrangements where VSOE of fair value of Post-Contract Customer Support (“PCS”) has been established, the Company recognizes revenue using the residual method at the time all other revenue recognition criteria have been met.

Within its Diagnostics segment, the Company manufactures blood screening products according to demand schedules provided by its collaboration partner, Grifols, S.A. (“Grifols”). The Company’s agreement provides that it shares a portion of Grifols’s revenue from screening blood donations. Upon shipment to Grifols, the Company recognizes product revenue at an agreed upon fixed transfer price, which is not refundable, and records the related cost of products sold. Based on the terms of the Company’s collaboration agreement with Grifols, the Company’s ultimate share of the net revenue from sales to the end user in excess of the transfer price is not known until it is reported to the Company by Grifols. On a monthly basis, Grifols reports net revenue generated during the prior month and remits an additional corresponding net payment to the Company, which is recorded as revenue at that time. This payment combined with the transfer price revenues previously recognized represents the Company’s ultimate share of net revenue under the agreement.

While the majority of its instruments are placed at customer sites, in certain instances the Company sells instruments to its clinical diagnostics customers and records sales of these instruments upon shipment or delivery, depending on the terms of the arrangement.

Within its Diagnostics business, and to a lesser extent, its GYN Surgical business, the Company provides its instrumentation (for example, the ThinPrep Processor, ThinPrep Imaging System, and the Panther and Tigris systems) and certain other hardware to customers without requiring them to purchase the equipment or enter into a lease. The Company installs the instrumentation or equipment at the customer’s site and recovers the cost of providing the instrumentation or equipment in the amount it charges for its diagnostic tests, assays and other disposables. Customers enter into a customer usage agreement and typically commit to purchasing minimum quantities of disposable products at a stated price over a defined contract term, which is typically between three and five years. Revenue is recognized over the term of the customer usage agreement as tests, assays and other disposable products are shipped or delivered, depending on the customer's arrangement.

Accounts Receivable and Reserves

The Company records reserves for doubtful accounts based upon a specific review of all outstanding invoices, known collection issues and historical experience. The Company regularly evaluates the collectability of its trade accounts receivables and performs ongoing credit evaluations of its customers and adjusts credit limits based upon payment history and its assessment of the customer’s current credit worthiness.

Accounts receivable reserve activity for fiscal 2016, 2015 and 2014 was as follows:

	Balance at Beginning of Period		Charged to Costs and Expenses		Write- offs and Payments			Balance at End of Period
Period Ended:
September 24, 2016	$	11.1	$	2.0	$	(0.4	)	$	12.7
September 26, 2015	$	12.0	$	1.6	$	(2.5	)	$	11.1
September 27, 2014	$	8.8	$	4.4	$	(1.2	)	$	12.0

Cost of Service and Other Revenues

Cost of service and other revenues primarily represents payroll and related costs associated with the Company’s professional services’ employees, consultants, infrastructure costs and overhead allocations, including depreciation, rent and materials consumed in providing the service.

Stock-Based Compensation

The Company accounts for share-based payments in accordance with ASC 718, Stock Compensation (ASC 718). As such, all share-based payments to employees, including grants of stock options, restricted stock units, performance stock units and market stock units and shares issued under the Company’s employee stock purchase plan, are recognized in the Consolidated Statements of Operations based on their fair values on the date of grant.

Net Income Per Share

Basic net income per share is computed by dividing net income by the weighted average number of common shares outstanding. Diluted net income per share is computed by dividing net income by the weighted average number of common shares and the dilutive effect of potential future issuances of common stock from outstanding stock options, restricted stock units and convertible debt determined by applying the treasury stock method. In accordance with ASC 718, the assumed proceeds under the treasury stock method include the average unrecognized compensation expense of in-the-money stock options and restricted stock units. This results in the assumed buyback of additional shares, thereby reducing the dilutive impact of equity awards.

The Company applies the provisions of ASC 260, Earnings Per Share, Subsection 10-45-44, to determine the diluted weighted average shares outstanding as it relates to its convertible notes, and due to the type of debt instrument issued and its accounting policy, the Company applies the treasury stock method and not the if-converted method. The dilutive impact of the Company’s convertible notes is based on the difference between the Company’s current period average stock price and the conversion price of the convertible notes, provided there is a premium. As such, dilution related to the conversion premium on the 2010 Notes, 2012 Notes and 2013 Notes is included in the calculation of diluted weighted-average shares outstanding in fiscal 2016 and 2015 to the extent each issuance is dilutive based on the average stock price during each reporting period being greater than the conversion price of the respective Notes. In fiscal 2014, only the dilution of the conversion premium on the 2010 Notes is included in diluted weighted-average shares outstanding.

A reconciliation of basic and diluted share amounts for fiscal 2016, 2015, and 2014 was as follows:

	September 24, 2016	September 26, 2015	September 27, 2014
Basic weighted average common shares outstanding	280,213	280,566	275,499
Weighted average common stock equivalents from assumed exercise of stock options and restricted stock units	2,631	2,898	2,368
Incremental shares from Convertible Notes premium	3,312	6,073	493
Diluted weighted average common shares outstanding	286,156	289,537	278,360
Weighted-average anti-dilutive shares related to:
Outstanding stock options	1,029	1,502	5,033
Restricted stock units	62	49	20

In those reporting periods in which the Company has reported net income, anti-dilutive shares generally are comprised of those stock options that either have an exercise price above the average stock price for the period or the stock options’ combined exercise price, average unrecognized stock compensation expense and assumed tax benefits upon exercise is greater than the average stock price for the period.

Product Warranties

The Company generally offers a one-year warranty for its products. The Company provides for the estimated cost of product warranties at the time product revenue is recognized. Factors that affect the Company’s warranty reserves include the number of units sold, historical and anticipated rates of warranty repairs and the cost per repair. The Company periodically assesses the adequacy of the warranty reserve and adjusts the amount as necessary.

Product warranty activity for fiscal 2016 and 2015 was as follows:

	Balance at Beginning of Period		Provisions		Settlements/ Adjustments			Balance at End of Period
Period ended:
September 24, 2016	$	5.4	$	7.1	$	(7.5	)	$	5.0
September 26, 2015	$	6.3	$	6.1	$	(7.0	)	$	5.4

Advertising Costs

Advertising costs are charged to operations as incurred. The Company does not have any direct-response advertising. Advertising costs, which include trade shows and conventions, were approximately $20.2 million, $14.4 million and $14.1 million for fiscal 2016, 2015 and 2014, respectively, and were included in selling and marketing expense in the Consolidated Statements of Income.

Recently Adopted Accounting Pronouncements

On September 27, 2015, the Company early adopted FASB ASU No. 2015-17, Balance Sheet Classification of Deferred Taxes, which simplifies the presentation of deferred income taxes by eliminating the requirement for entities to separate deferred income tax liabilities and assets into current and noncurrent amounts in the balance sheet. Rather, it requires deferred tax assets and liabilities to be classified as noncurrent in the balance sheet. The Company adopted this standard prospectively in the first quarter of fiscal 2016, and prior periods were not retrospectively adjusted.

On June 26, 2016, the Company retrospectively adopted FASB ASU 2015-13, Presentation of Debt Issuance Costs, which simplifies the presentation of debt issuance costs and requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from that debt liability consistent with the presentation of a debt discount and not recorded as separate assets. The Company adopted this standard in the fourth quarter of fiscal 2016, and the fiscal 2015 balance sheet was retrospectively recast. In fiscal 2015, the Company had $0.6 million related to current debt issuance costs recorded in prepaid expenses and other current assets and $27.0 million related to non-current debt issuance costs recorded in other assets. The adoption of this standard resulted in these amounts being reclassified as liabilities, reducing both the current portion of long-term debt and long-term debt, net of current portion at the end of fiscal 2015 by $27.6 million in total and a corresponding reduction to the aforementioned asset accounts. Debt issuance costs will no longer be recorded as an asset.

Recently Issued Accounting Pronouncements

In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740). The guidance requires companies to recognize the income tax effects of intercompany sales and transfers of assets, other than inventory, in the income statement as income tax expense (or benefit) in the period in which the transfer occurs. The guidance is effective for annual periods beginning after December 15, 2017, and is applicable to the Company in fiscal 2019. Early adoption is permitted as of the beginning of an annual reporting period. The Company is currently evaluating the impact of the adoption of ASU 2016-16 on its consolidated financial position and results of operations.

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flow (Topic 230). The guidance reduces diversity in how certain cash receipts and cash payments are presented and classified in the Statements of Cash Flows. Certain of ASU 2016-15 requirements are as follows: 1) cash payments for debt prepayment or debt extinguishment costs should be classified as cash outflows for financing activities, 2) contingent consideration payments made soon after a business combination should be classified as cash outflows for investing activities and cash payment made thereafter should be classified as cash outflows for financing up to the amount of the contingent consideration liability recognized at the acquisition date with any excess classified as operating activities, 3) cash proceeds from the settlement of insurance claims should be classified on the basis of the nature of the loss, 4) cash proceeds from the settlement of Corporate-Owned Life Insurance (COLI) Policies should be classified as cash inflows from investing activities and cash payments for premiums on COLI policies may be classified as cash outflows for investing activities, operating activities, or a combination of investing and operating activities, and 5) cash paid to a tax authority by an employer when withholding shares from an employee's award for tax-withholding purposes should be classified as cash outflows for financing activities. The guidance is effective for annual periods beginning after December 15, 2017, and is applicable to the Company in fiscal 2019. Early adoption is permitted. The adoption of ASU 2016-15 is not expected to have a material effect on the Company's consolidated financial statements.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326). The guidance requires that financial assets measured at amortized cost be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis. The income statement reflects the measurement of credit losses for newly recognized financial assets, as well as the expected credit losses during the period. The measurement of expected credit losses is based upon historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. Credit losses relating to available-for-sale debt securities will be recorded through an allowance for credit losses rather than as a direct write-down to the security. The updated guidance is effective for annual periods beginning after December 15, 2019, and is applicable to the Company in fiscal 2021. Early adoption is permitted. The Company is currently evaluating the impact of the adoption of ASU 2016-13 on its consolidated financial position and results of operations.

In March 2016, the FASB issued ASU No. 2016-09, Compensation - Stock Compensation (Topic 718). The guidance changes how companies account for certain aspects of share-based payments to employees. Entities will be required to recognize income tax effects of awards in the income statement when the awards vest or are settled. The guidance also allows an employer to repurchase more of an employee's shares than it can today for tax withholding purposes by providing for withholding at the employee's maximum rate as opposed to the minimum rate without triggering liability accounting and by allowing an entity-wide policy election to account for forfeitures as they occur. The updated guidance is effective for annual periods beginning after December 15, 2016, and is applicable to the Company in fiscal 2018. Early adoption is permitted. The adoption of ASU 2016-09 is not expected to have a material effect on the Company's consolidated financial position and results of operations, although the income tax affect from vesting of stock units and option exercises could be significant to quarterly results of operations.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). The guidance requires an entity to recognize a right-of-use asset and a lease liability for virtually all of its leases with terms of more than 12 months. Recognition, measurement and presentation of expenses will depend on classification as a finance or operating lease. The amendments also require certain quantitative and qualitative disclosures about leasing arrangements. The guidance is effective for annual periods beginning after December 15, 2018, and is applicable to the Company in fiscal 2020. Early adoption is permitted. The updated guidance requires a modified retrospective adoption. The Company is currently evaluating the impact of the adoption of ASU 2016-02 on its consolidated financial position and results of operations.

In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. This guidance changes how entities measure equity investments that do not result in consolidation and are not accounted for under the equity method. Entities will be required to measure these investments at fair value at the end of each reporting period and recognize changes in fair value in net income. A practicability exception will be available for equity investments that do not have readily determinable fair values, however; the exception requires the Company to consider relevant transactions that can be reasonably known to identify any observable price changes that would impact the fair value. This guidance also changes certain disclosure requirements and other aspects of current US GAAP. This guidance is effective for annual periods beginning after December 15, 2017, and is applicable to the Company in fiscal 2019. Early adoption is permitted. The Company is currently evaluating the impact of the adoption of ASU 2016-01 on its consolidated financial position and results of operations.

In July 2015, the Financial Accounting Standards Board (FASB) issued guidance under ASC 330, Simplifying the Measurement of Inventory. The new guidance requires inventory to be measured at the lower of cost and net realizable value, which is defined as the estimated selling price in the ordinary course of business less reasonably predictable costs of completion, disposal and transportation. This new guidance is effective for the Company's first quarter of fiscal 2018 and early adoption is permitted. The guidance must be applied prospectively. The Company is currently evaluating the impact of the adoption of this requirement on its consolidated financial statements but does not anticipate that adoption of this guidance will have a material impact on its consolidated financial statements.

In February 2015, the FASB issued ASU No. 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis. This guidance focuses on a reporting company’s consolidation evaluation to determine whether certain legal entities should be consolidated. This guidance is effective for annual periods beginning after December 15, 2015, and is applicable to the Company in fiscal 2017. Early adoption is permitted, including adoption in an interim period. The Company is currently evaluating this guidance, but does not anticipate that adoption of this guidance will have a material impact on its consolidated financial statements.

In August 2014, the FASB issued ASU No. 2014-15, Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern. ASU 2014-15 requires management to evaluate, at each annual or interim reporting period, whether there are conditions or events that exist that raise substantial doubt about an entity's ability to continue as a going concern within one year after the date the financial statements are issued and provide related disclosures. ASU 2014-15 is effective for annual periods ending after December 15, 2016 and is applicable to us in fiscal 2018. Earlier application is permitted. The adoption of ASU 2014-15 is not expected to have a material effect on the Company's consolidated financial statements or disclosures.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 660), which provides guidance for revenue recognition. This ASU is applicable to any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets. ASU 2014-09 will supersede the revenue recognition requirements in Topic 605, Revenue Recognition, and most industry-specific guidance. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled to receive in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under current U.S. GAAP. These judgments may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. On July 9, 2015, the FASB voted in favor of delaying the effective date of the new standard by one year, with early adoption permitted as of the original effective date. ASU 2014-09 is effective prospectively for fiscal years, and interim reporting periods within those years, beginning after December 15, 2017, which is fiscal 2019 for the Company. The Company is currently evaluating the impact of the adoption of ASU 2014-09 on its consolidated financial position and results of operations.

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Restructuring and Divestiture Charges

12 Months Ended

Sep. 24, 2016

Restructuring and Related Activities [Abstract]

Restructuring and Divestiture Charges

Restructuring and Divestiture Charges

The Company evaluates its operations for opportunities to improve operational effectiveness and efficiency, including facility and operations consolidation, and to better align expenses with revenues. As a result of these assessments, the Company has undertaken various restructuring actions which are described below. The following table displays charges taken related to restructuring actions in fiscal 2016, 2015 and 2014 and a rollforward of the charges to the accrued balances as of September 24, 2016:

	Fiscal 2016 Actions		Fiscal 2015 Actions		Fiscal 2014 Actions		Consolidation of Diagnostics Operations		Other Operating Cost Reductions		Total
Restructuring and Divestiture Charges
Fiscal 2014 charges:
Workforce reductions	$	—	$	—	$	29.5	$	2.9	$	9.8	$	42.2
Non-cash impairment charge	—		—		—		—		3.1		3.1
Facility closure costs	—		—		—		—		0.6		0.6
Other	—		—		—		0.1		0.2		0.3
Fiscal 2014 restructuring charges	$	—	$	—	$	29.5	$	3.0	$	13.7	$	46.2
Divestiture net charges											5.5
Fiscal 2014 restructuring and divestiture charges											$	51.7
Fiscal 2015 charges:
Workforce reductions	$	—	$	10.0	$	6.0	$	0.1	$	0.2	$	16.3
Facility closure costs	—		—		2.0		0.5		0.1		2.6
Fiscal 2015 restructuring charges	$	—	$	10.0	$	8.0	$	0.6	$	0.3	$	18.9
Divestiture net charges											9.6
Fiscal 2015 restructuring and divestiture charges											$	28.5
Fiscal 2016 charges:
Workforce reductions	$	10.5	$	—	$	—	$	—	$	—	$	10.5
Fiscal 2016 restructuring charges	$	10.5	$	—	$	—	$	—	$	—	$	10.5

	Fiscal 2016 Actions			Fiscal 2015 Actions			Fiscal 2014 Actions			Consolidation of Diagnostics Operations			Other Operating Cost Reductions			Total
Rollforward of Accrued Restructuring
Balance as of September 28, 2013	$	—		$	—		$	—		$	3.0		$	9.3		$	12.3
Fiscal 2014 restructuring charges	$	—		$	—		$	29.5		$	3.0		$	13.7		$	46.2
Stock-based compensation	—			—			(6.6		)	—			—			(6.6		)
Non-cash impairment charges	—			—			—			—			(3.1		)	(3.1		)
Severance payments	—			—			(10.9		)	(3.0		)	(17.1		)	(31.0		)
Other payments	—			—			—			—			(0.9		)	(0.9		)
Balance as of September 27, 2014	$	—		$	—		$	12.0		$	3.0		$	1.9		$	16.9
Fiscal 2015 restructuring charges	$	—		$	10.0		$	8.0		$	0.6		$	0.3		$	18.9
Stock-based compensation	—			(4.1		)	—			—			—			(4.1		)
Severance payments	—			(2.8		)	(16.2		)	(3.0		)	(1.9		)	(23.9		)
Other payments	—			—			(1.3		)	(0.5		)	(0.3		)	(2.1		)
Balance as of September 26, 2015	$	—		$	3.1		$	2.5		$	0.1		$	—		$	5.7
Fiscal 2016 restructuring charges	$	10.5		$	—		$	—		$	—		$	—		$	10.5
Stock-based compensation	(0.4		)	—			—			—			—			(0.4		)
Severance payments	(4.6		)	(2.9		)	(1.4		)	(0.1		)	—			(9.0		)
Other payments	—			—			(0.5		)	—			—			(0.5		)
Balance as of September 24, 2016	$	5.5		$	0.2		$	0.6		$	—		$	—		$	6.3

Fiscal 2016 Actions

During the fourth quarter of fiscal 2016, the Company decided to initiate a cost reduction initiative in part of its Diagnostic's reportable segment, resulting in the termination of certain employees. The majority of employees were notified of termination and related benefits in the fourth quarter of fiscal 2016, and the Company recorded these charges pursuant to ASC 420, Exit or Disposal Cost Obligations (ASC 420) as the benefits qualify as one-time termination benefits. As such, the Company recorded a charge for severance and benefits of $0.9 million in the fourth quarter. Additional charges of $0.2 million are expected in fiscal 2017 related to this Action.

During the third quarter of fiscal 2015, the Company decided to close its Bedford, Massachusetts facility where it manufactured its Skeletal Health products and provided certain support manufacturing services for its Breast Health segment. The manufacturing of the Skeletal Health products has been outsourced to a third-party, and the Breast Health manufacturing services were moved to the Company's Danbury, Connecticut and Marlborough, Massachusetts facilities. In addition, research and development, sales and services support and administrative functions have been or will be moved to both Marlborough and Danbury. The transition is expected to be substantially completed by the end of calendar year 2016. In connection with this plan, certain employees, primarily in manufacturing, were terminated. The employees were notified of termination and related benefits in the first quarter of fiscal 2016, and the Company recorded these charges pursuant to ASC 420. Employees were required to remain employed during this transition period and charges were recorded ratably over the required service period. The Company recorded $1.7 million in severance and benefits charges related to this action in fiscal 2016. This action is complete and no additional severance and benefits charges are expected.

In connection with shutting down the Bedford location, the Company expects to record lease obligation charges ranging from approximately $8.0 million to $12.0 million in fiscal 2017 as it meets the cease-use date requirements for a portion of the facility. In order to estimate the lease obligation charges, the Company has made certain assumptions including the time period it will take to obtain a subtenant and certain sub-lease rates. These estimates may vary from the sub-lease agreements ultimately executed, if at all, resulting in an adjustment to the charges.

During the first quarter of fiscal 2016, the Company began implementing a second plan to consolidate and improve operational efficiency of its international sales and marketing and field services operations and certain support functions. As a result, the Company identified and terminated certain employees during each quarter in fiscal 2016. Severance and benefits under this action were recorded pursuant to ASC 712, Compensation-Nonretirement Postemployment Benefits (ASC 712), and ASC 420 depending on the circumstances. The Company recorded severance and benefit charges of $7.9 million in fiscal 2016 related to this plan. Included in this charge was $0.4 million of stock-based compensation.

Fiscal 2015 Actions

During each quarter of fiscal 2015, the Company continued to make executive management changes resulting in the termination of certain executives and employees on a worldwide basis. In addition, the Company continued to consolidate and close certain international offices to improve operational efficiency and reduce costs. Severance and benefit charges under these actions were recorded pursuant to ASC 712 and ASC 420 depending on the employees terminated, and the Company recorded severance and benefit charges of $10.0 million in fiscal 2015. Included in the charge was $4.1 million of stock-based compensation. No additional charges will be recorded under these actions.

In connection with its review of operations, the Company decided to shut-down its manufacturing operation in China, which manufactured mammography systems for the Chinese market. As a result, the Company terminated manufacturing and research and development personnel located in China, and the severance charge was insignificant.

Fiscal 2014 Actions

During the first quarter of fiscal 2014, the Company implemented a cost reduction initiative comprised of reducing headcount and evaluating research projects and operating costs. In connection with this plan, the Company terminated certain employees on a worldwide basis. The Company recorded the severance and benefit charges pursuant to ASC 420 and ASC 712, depending on the employee terminated. The Company recorded $6.3 million of severance and benefit charges in the first quarter of fiscal 2014, which included $0.4 million of stock-based compensation.

On December 6, 2013, Stephen P. MacMillan was appointed as President, Chief Executive Officer and a director of the Company. The employment of John W. Cumming, the Company’s prior President and Chief Executive Officer, terminated upon Mr. MacMillan’s appointment. The Company provided separation benefits to Mr. Cumming pursuant to his employment letter dated July 18, 2013 resulting in a charge of $6.6 million in the first quarter of fiscal 2014, which included $4.4 million of stock-based compensation related to the acceleration of all of Mr. Cumming’s outstanding equity awards in accordance with the existing terms of Mr. Cumming’s share-based payment arrangements.

In the second, third, and fourth quarters of fiscal 2014, the Company continued to make executive management changes and implement additional cost reduction initiatives resulting in the termination of certain executives and employees on a worldwide basis. In addition, in the fourth quarter of fiscal 2014 the Company decided to consolidate and close certain international offices. Severance and benefit charges under these actions were recorded pursuant to ASC 420 and ASC 712 depending on the employees terminated, and the Company recorded severance and benefit charges of $16.6 million in fiscal 2014. Included in the charge was $1.8 million of stock-based compensation for the modification of the terms of equity awards to certain employees. For those employees who continued to be employed beyond the minimum retention period, charges were recorded ratably over the estimated service period of the affected employees.

During fiscal 2015, the Company recorded $6.0 million for severance and benefits costs and $2.0 million for facility closure costs related to this action. The facility closure costs primarily relate to lease obligation charges for three office locations that were vacated and the Company had met the cease-use date criteria. This action was completed in fiscal 2015.

Consolidation of Diagnostics Operations

In connection with its acquisition of Gen-Probe in fiscal 2012, the Company implemented restructuring actions to consolidate its Diagnostics operations, including streamlining product development initiatives, reducing overlapping functional areas in sales, marketing and general and administrative functions, and consolidating manufacturing resources, field services and support. As a result, the Company terminated certain employees from Gen-Probe and its legacy diagnostics business in research and development, sales, marketing, and general and administrative functions. The Company recorded severance and benefit charges in fiscal 2012 of $13.3 million related to this action pursuant to ASC 420, Exit or Disposal Cost Obligations (ASC 420). The majority of these employees ceased working in the fourth quarter of fiscal 2012, and their full severance charge was recorded in the fourth quarter of fiscal 2012. In addition, certain of the terminated Gen-Probe employees had unvested stock options, which were accelerated at termination pursuant to the stock options’ original terms. As such, the severance charges in fiscal 2012 include $3.5 million of stock-based compensation expense. In fiscal 2013, the Company recorded $10.8 million of severance charges, including $6.3 million for stock-based compensation. Included in these charges was $9.7 million recorded in the second quarter of fiscal 2013 related to the termination of certain Gen-Probe executives, including Carl Hull, Gen-Probe’s former Chairman, President and Chief Executive Officer. The charge was for the acceleration of certain retention payments and equity awards pursuant to the original terms of the related agreements. No additional charges were recorded in fiscal 2014, 2015 or 2016 under this portion of the action.

In addition, under this plan, the Company completed moving its legacy molecular diagnostics operations from Madison, Wisconsin to Gen-Probe’s facilities in San Diego, California. This transfer was completed at the end of fiscal 2014, and as a result, many of the employees in Madison were terminated. The Company recorded severance and benefit charges pursuant to ASC 420 beginning in fiscal 2012 through the third quarter of fiscal 2015 as charges were recorded over requisite service periods. The Company recorded $0.1 million, $3.0 million, $3.2 million and $0.9 million for severance and benefits in fiscal 2015, 2014, 2013 and 2012, respectively, and $0.5 million for facility closure costs in fiscal 2015. The Company also recorded non-cash charges of $0.6 million in the fourth quarter of fiscal 2012 as a result of exiting certain research projects. This action is complete and no additional charges were recorded in fisca1 2016.

Other Operating Cost Reductions:

Hitec-Imaging Organic Photoconductor Manufacturing Line Shut-down

In the fourth quarter of fiscal 2013, in connection with the Company’s cost reduction initiatives, the Company decided to shut-down its Hitec-Imaging organic photoconductor manufacturing line located in Germany. This production line was included within the Breast Health segment. As a result, the Company terminated certain employees, primarily in manufacturing, in fiscal 2014. During the first quarter of fiscal 2014, the Company completed its negotiations with the local Works Council to determine severance benefits for the approximately 95 affected employees. The Company recorded severance and benefit charges pursuant to ASC 420 and began notifying the affected employees in the second quarter of fiscal 2014. The Company recorded charges of $0.3 million and $8.7 million in fiscal 2015 and 2014, respectively in connection with terminating these employees.

In the first quarter of fiscal 2014, the Company recorded an impairment charge of $3.1 million to record certain buildings at this location to their estimated fair value.

Divestitures

In the fourth quarter of fiscal 2014, the Company completed the sale of its MRI breast coils product line and recorded a loss on disposal of $5.3 million. The Company also provided certain transition services through April 2015, including the manufacturing and sale of inventory to the buyer. Since all operations had ceased during the third quarter of fiscal 2015, the Company concluded that this subsidiary had been substantially liquidated and recorded a $9.6 million charge in the third quarter of fiscal 2015 related to writing off the cumulative translation adjustment related to the subsidiary.

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Borrowings and Credit Arrangements

12 Months Ended

Sep. 24, 2016

Debt Disclosure [Abstract]

Borrowings and Credit Arrangements

Borrowings and Credit Agreements

The Company’s borrowings consisted of the following:

	September 24, 2016		September 26, 2015
Current debt obligations, net of debt discount and issuance costs:
Term Loan	$	83.8	$	74.4
Revolver	—		175.0
Securitization Program	200.0		—
Convertible Notes	12.2		141.8
Total current debt obligations	296.0		391.2
Long-term debt obligations, net of debt discount and issuance costs:
Term Loan	1,308.2		1,388.3
2022 Senior Notes	977.7		973.9
Convertible Notes	763.5		858.8
Total long-term debt obligations	3,049.4		3,221.0
Total debt obligations	$	3,345.4	$	3,612.2

In April 2015, the FASB issued ASU No. 2015-03, Presentation of Debt Issuance Costs. ASU 2015-03 simplifies the presentation of debt issuance costs and requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from that debt liability consistent with the presentation of a debt discount and not recorded as separate assets. The Company adopted this standard in the fourth quarter of fiscal 2016, and the prior period was retrospectively adjusted. In fiscal 2015, the Company had $0.6 million related to current debt issuance costs recorded in prepaid expenses and other current assets and $27.0 million related to non-current debt issuance costs recorded in other assets. The adoption of this standard resulted in these amounts being reclassified as liabilities, reducing both the current portion of long-term debt and long-term debt, net of current portion at the end of fiscal 2015 by $27.6 million in total and a corresponding reduction to the aforementioned asset accounts. Debt issuance costs will no longer be recorded as an asset.

The debt maturity schedule for the Company’s obligations as of September 24, 2016 is as follows:

	2017		2018		2019		2020		2021		2022 and Thereafter		Total
Term Loan	$	84.4	$	121.9	$	150.0	$	1,050.0	$	—	$	—	$	1,406.3
Securitization Program	200.0		—		—		—		—		—		200.0
2022 Senior Notes	—		—		—		—		—		1,000.0		1,000.0
Convertible Notes (1)	12.3		790.4		—		—		—		—		802.7
	$	296.7	$	912.3	$	150.0	$	1,050.0	$	—	$	1,000.0	$	3,409.0

(1) Classified based on the earliest date of redemption for each respective issuance. In addition, the balance in fiscal 2018 reflects accretion on the 2013 Notes through September 24, 2016.

Credit Agreement

On May 29, 2015, the Company and certain of its domestic subsidiaries entered into a Credit and Guaranty Agreement (the “Credit Agreement”) with Bank of America, N.A., in its capacity as Administrative Agent, Swing Line Lender and L/C Issuer, and certain other lenders party thereto (collectively, the "Lenders"). This Credit Agreement replaced the Company's existing senior secured credit facility with Goldman Sachs Bank USA, in its capacity as administrative agent and collateral agent and the lenders party thereto ("Prior Credit Agreement") entered into on August 1, 2012, and the proceeds under the Credit Agreement of $1.68 billion were used to pay off the amounts outstanding under the Prior Credit Agreement.

The credit facilities ("Credit Facilities") under the Credit Agreement consist of:

• A $1.5 billion secured term loan to the Company with a final maturity date of May 29, 2020 (the “Term Loan”); and

• A secured revolving credit facility under which the Borrowers (as defined below) may borrow up to $1 billion, subject to certain sublimits, with a final maturity date of May 29, 2020 (the “Revolver”).

The Company and one of its subsidiaries, Hologic GGO 4 Ltd ("Hologic U.K."), are the initial borrowers (the “Borrowers”) under the Credit Agreement. The Company's obligations under the Credit Agreement are guaranteed by certain of its domestic subsidiaries (the "Subsidiary Guarantors"). Hologic U.K.’s obligations under the Credit Agreement are guaranteed by the Company and the Subsidiary Guarantors.

In addition to the Term Loan, the Company borrowed $175.0 million under the Revolver upon entering into the Credit Agreement that was subsequently repaid during fiscal 2016. Borrowings under the Revolver may be made in certain alternative currencies pursuant to the terms of the Credit Agreement. The Company has the ability, subject to the terms of the Credit Agreement, to designate any additional wholly-owned foreign subsidiary of the Company as a Designated Borrower (as defined in the Credit Agreement) to receive loans up to a $100 million sublimit. The obligations of any Designated Borrower under such sublimit would be guaranteed by the Company and the Subsidiary Guarantors. During fiscal 2016, the Company added Hologic UK Finance, Ltd as a Designated Borrower.

Borrowings under the Credit Facilities bear interest, at the Company's option and in each case plus an applicable margin, as follows:

• Term Loan: the Base Rate (as defined in the Credit Agreement) or the Eurocurrency Rate (i.e., the Libor rate); and

• Revolver: if funded in U.S. dollars, the Base Rate or the Eurocurrency Rate, and, if funded in an alternative currency, the Eurocurrency Rate; and if requested under the swing line sublimit, the Base Rate.

The applicable margin to the Base Rate and the Eurocurrency Rate is subject to specified changes depending on the total net leverage ratio as defined in the Credit Agreement. Current borrowings outstanding under the Credit Agreement bear interest at the Eurocurrency Rate plus the applicable margin, which is currently 1.50% per annum. The Company is also required to pay a quarterly commitment fee on the undrawn committed amount available under the Revolver.

The Company is required to make scheduled principal payments under the Term Loan in increasing amounts ranging from $18.75 million per three-month period commencing with the three-month period ending on September 25, 2015 to $37.5 million per three-month period commencing with the three-month period ending on September 28, 2018. The remaining balance of the Term Loan is due at maturity. Any amounts outstanding under the Revolver are due at maturity. In addition, subject to the terms and conditions set forth in the Credit Agreement, the Company may be required to make certain mandatory prepayments from specified excess cash flows from operations (to the extent the Company’s net senior secured leverage ratio exceeds a certain ratio) and from the net proceeds of specified types of asset sales (subject to certain reinvestment rights), debt issuances and insurance recoveries (subject to certain reinvestment rights) (“Mandatory Prepayments”). Mandatory Prepayments are required to be applied by the Company, first, to the Term Loan, second, to any outstanding amount under the swing line sublimit, third, to the Revolver, and fourth to any outstanding amount under a letter of credit sublimit. Subject to certain limitations, the Company may voluntarily prepay any of the credit facilities under the Credit Agreement without premium or penalty.

Borrowings outstanding under the Credit Agreement in fiscal 2016 and a combination of the Credit Agreement and the Prior Credit Agreement in fiscal 2015 had weighted-average interest rates of 2.08% and 2.43%, respectively. The interest rate on the amounts outstanding at September 24, 2016 was 2.05%. Interest expense in fiscal 2016 and 2015 under the Credit Agreement and the Prior Credit Agreement aggregated $40.4 million and $54.7 million, respectively, which includes non-cash interest expense of $4.4 million and $9.0 million, respectively, related to the amortization of the deferred issuance costs and accretion of the debt discount.  

The Credit Agreement contains affirmative and negative covenants customarily applicable to senior secured credit facilities, including covenants restricting the ability of the Borrowers and the Subsidiary Guarantors, subject to negotiated exceptions, to incur additional indebtedness and additional liens on their assets, engage in mergers or acquisitions or dispose of assets, enter into sale-leaseback transactions, pay dividends or make other distributions, voluntarily prepay other indebtedness, enter into transactions with affiliated persons, make investments, and change the nature of their businesses. The Credit Agreement also contains customary representations and warranties and events of default, including payment defaults, breach of representations and warranties, covenant defaults, cross defaults and an event of default upon a change of control of the Company.

Borrowings are secured by first-priority liens on, and a first-priority security interest in, substantially all of the assets of the Company, with certain exceptions. For example, borrowings under the Credit Agreement are not secured by those accounts receivable that are transferred to the special purpose entity under the Company's Accounts Receivable Securitization program. The Credit Agreement contains total net leverage ratio and interest coverage ratio financial covenants measured as of the last day of each fiscal quarter and an excess cash flow prepayment requirement measured as of the end of each fiscal year. The total net leverage ratio is 5.50:1.00 beginning on the Company's fiscal quarter ended September 26, 2015, and then decreases over time to 4.00:1.00 for the quarter ending March 28, 2020. The interest coverage ratio is 3.75:1.00 beginning on the Company's fiscal quarter ended September 26, 2015, and will remain as such for each quarter thereafter. The total net leverage ratio is defined as the ratio of the Company's consolidated net debt as of the quarter end to its consolidated adjusted EBITDA (as defined in the Credit Agreement) for the four-fiscal quarter period ending on the measurement date. The interest coverage ratio is defined as the ratio of the Company's consolidated adjusted EBITDA for the prior four-fiscal quarter period ending on the measurement date to adjusted consolidated cash interest expense (as defined in the Credit Agreement) for the same measurement period. These terms, and the calculation thereof, are defined in further detail in the Credit Agreement. The Company was in compliance with these covenants as of September 24, 2016, and no Mandatory Prepayments were required as of September 24, 2016.

The Company has evaluated the Credit Agreement for derivatives pursuant to ASC 815, Derivatives and Hedging, and identified embedded derivatives that require bifurcation as the features are not clearly and closely related to the host instrument. The embedded derivatives are a default provision, which could require additional interest payments, and a provision requiring contingent payments to compensate the lenders for changes in tax deductions. The Company has determined that the fair value of these embedded derivatives was nominal as of September 24, 2016 and September 26, 2015.

Pursuant to ASC 470, Debt (ASC 470), the accounting for the Credit Agreement was evaluated on a creditor-by-creditor basis with regard to the Prior Credit Agreement to determine whether each transaction should be accounted for as a modification or extinguishment. Certain creditors under the Prior Credit Agreement did not participate in this refinancing transaction and ceased being creditors of the Company. As a result, the Company recorded a debt extinguishment loss of $18.2 million in the third quarter of fiscal 2015 to write-off the pro-rata amount of unamortized debt discount and deferred issuance costs related to these creditors. For the remainder of the creditors, this transaction has been accounted for as a modification because on a creditor-by-creditor basis the present value of the cash flows between the two debt instruments before and after the transaction was less than 10%. Pursuant to ASC 470, subtopic 50-40, third-party costs of $4.6 million related to this transaction were recorded as interest expense and $3.8 million were recorded as deferred issuance costs to be amortized over the term of the agreement. In addition, fees paid directly to the Lenders of $4.9 million were recorded as a debt discount.

On May 6, 2016, the Company used the proceeds borrowed under the Securitization Program, discussed below, to repay $175.0 million owed under its Revolver. No amounts are outstanding under the Revolver as of September 24, 2016.

Prior Credit Agreement

On August 1, 2012, the Company and certain domestic subsidiaries (the “Guarantors”) entered into the Prior Credit Agreement with Goldman Sachs Bank USA, in its capacity as administrative and collateral agent, and the lenders party thereto (collectively, the “Prior Lenders”).

The credit facilities under the Prior Credit Agreement initially consisted of:

• $1.0 billion senior secured tranche A term loan (“Term Loan A”) with a final maturity date of August 1, 2017;

• $1.5 billion secured tranche B term loan (“Term Loan B”) with a final maturity date of August 1, 2019; and

• $300.0 million secured revolving credit facility (“Revolving Facility”) with a final maturity date of August 1, 2017.

Pursuant to the terms and conditions of the Prior Credit Agreement, the Prior Lenders committed to provide senior secured financing in an aggregate amount of up to $2.8 billion. As of the closing of the Gen-Probe Incorporated acquisition on August 1, 2012, the Company borrowed $2.5 billion aggregate principal under the term loans of the Prior Credit Agreement. Net proceeds to the Company were $2.41 billion, after issuing the term loans at a discount and deducting associated fees and expenses, all of which were being amortized to interest expense over the respective maturity dates of the debt. The proceeds were used to fund a portion of the purchase price for the Gen-Probe acquisition.

On October 31, 2013, the Company voluntarily prepaid $100.0 million of the Term Loan B facility. Pursuant to ASC 470, the Company recorded a debt extinguishment loss of $2.9 million in the first quarter of fiscal 2014 to write-off the pro-rata amount of unamortized debt discount and deferred issuance costs related to this voluntary prepayment.

On February 26, 2014, the Company, the Guarantors, Goldman Sachs, and the Prior Lenders entered into Refinancing Amendment No. 3 to the Prior Credit Agreement and reduced the applicable interest rates. In connection with this refinancing, the Company voluntarily prepaid $25.0 million of the new senior secured tranche B term loan facility. Pursuant to ASC 470, the accounting for this refinancing was evaluated on a creditor-by-creditor basis to determine whether each transaction should be accounted for as a modification or extinguishment. Certain creditors under the Prior Credit Agreement did not participate in this refinancing transaction and ceased being creditors of the Company. As a result, the Company recorded a debt extinguishment loss of $4.4 million in the second quarter of fiscal 2014 to write-off the pro-rata amount of unamortized debt discount and deferred issuance costs related to these creditors. For the remainder of the creditors, this transaction was accounted for as a modification because on a creditor-by-creditor basis the present value of the cash flows between the two debt instruments before and after the transaction was less than 10%. Pursuant to ASC 470, subtopic 50-40, third-party costs of $1.0 million related to this transaction were recorded to interest expense.

On December 24, 2014, the Company voluntarily prepaid $300.0 million of the Term Loan B facility. Pursuant to ASC 470, the Company recorded a debt extinguishment loss of $6.7 million in the first quarter of fiscal 2015 to write-off the pro-rata amount of unamortized debt discount and deferred issuance costs related to this voluntary prepayment.

Borrowings outstanding under the Prior Credit Agreement in fiscal 2014 had weighted-average interest rate of 2.89%. Interest expense under the Prior Credit Agreement totaled $75.3 million for fiscal 2014, which included non-cash interest expense of $12.7 million, related to the amortization of the deferred financing costs and accretion of the debt discount.

Senior Notes

2022 Senior Notes

On July 2, 2015, the Company completed a private placement of $1.0 billion aggregate principal amount of its 5.250% Senior Notes due 2022 (the “2022 Senior Notes”) at an offering price of 100% of the aggregate principal amount of the 2022 Senior Notes. The 2022 Senior Notes mature on July 15, 2022 and bear interest at the rate of 5.250% per year, payable semi-annually on January 15 and July 15 of each year, commencing on January 15, 2016. The Company used the net proceeds of the 2022 Senior Notes, plus available cash to discharge the outstanding 6.25% Senior Notes due 2020 (the "Senior Notes") and redeemed such Senior Notes, in the aggregate principal amount of $1.0 billion on August 1, 2015 at an aggregate redemption price of $1.03 billion, reflecting a premium payment of $31.25 million. In addition, the Company made a final interest payment in the amount of $31.25 million for interest accrued to August 1, 2015, to holders of record of the Senior Notes as of July 15, 2015. As a result of this transaction, the Company recorded a debt extinguishment loss in the fourth quarter of fiscal 2015 of $22.3 million, which included the pro-rata premium payment and pro-rata debt issuance costs. The Company evaluated the accounting under ASC 470 at the creditor-by-creditor level to determine modification versus extinguishment accounting.

The Company recorded interest expense related to the 2022 Senior Notes and Senior Notes of $56.0 million, $67.2 million and $64.0 million in fiscal 2016, 2015 and 2014, respectively, which includes non-cash interest expense of $3.8 million, $2.1 million and $1.7 million in fiscal 2016, 2015 and 2014, respectively, related to the amortization of the deferred financing costs.

The 2022 Senior Notes were not registered, and will be not registered, under the Securities Act of 1933, as amended (the “Securities Act”), or any state securities laws, and were offered only to qualified institutional buyers in reliance on Rule 144A under the Securities Act and outside the United States in accordance with Regulation S under the Securities Act. The 2022 Senior Notes are general senior unsecured obligations of the Company and are guaranteed on a senior unsecured basis by certain domestic subsidiaries of Hologic (the “Domestic Guarantors”).

The 2022 Senior Notes were issued pursuant to an indenture (the "Indenture"), dated as of July 2, 2015, among the Company, the Domestic Guarantors and Wells Fargo Bank, National Association, as trustee. The Indenture contains covenants which limit, among other things, the ability of the Company and the Domestic Guarantors to incur additional indebtedness and additional liens on their assets, engage in mergers or acquisitions or dispose of assets, pay dividends or make other distributions, enter into certain transactions with affiliated persons and to make certain investments. These covenants are subject to a number of exceptions and qualifications, including the suspension of certain of these covenants upon the 2022 Senior Notes receiving an investment grade credit rating. The Indenture does not require the Company to maintain any financial covenants.

The Company may redeem the 2022 Senior Notes at any time prior to July 15, 2018 at a price equal to 100% of the aggregate principal amount so redeemed, plus accrued and unpaid interest, if any, to the redemption date and a make-whole premium set forth in the Indenture. The Company may also redeem up to 35% of the aggregate principal amount of the 2022 Senior Notes with the net cash proceeds of certain equity offerings at any time and from time to time before July 15, 2018, at a redemption price equal to 105.250% of the aggregate principal amount so redeemed, plus accrued and unpaid interest, if any, to the redemption date. The Company also has the option to redeem the 2022 Senior Notes on or after: July 15, 2018 through July 14, 2019 at 102.625% of par; July 15, 2019 through July 14, 2020 at 101.313% of par; and July 15, 2020 and thereafter at 100% of par. In addition, if the Company undergoes a change of control, as provided in the Indenture, the Company will be required to make an offer to purchase each holder’s 2022 Senior Notes at a price equal to 101% of their principal amount, plus accrued and unpaid interest, if any, to the repurchase date.

The Company has evaluated the 2022 Senior Notes for derivatives pursuant to ASC 815 and did not identify any embedded derivatives that require bifurcation. All features were deemed to be clearly and closely related to the host instrument.

Convertible Notes

On December 10, 2007, the Company issued and sold $1.725 billion, at par, of 2.00% Convertible Senior Notes due December 15, 2037 (“2007 Notes”). On November 18, 2010, the Company entered into separate, privately-negotiated exchange agreements under which it retired $450.0 million in aggregate principal of its 2007 Notes for $450.0 million in aggregate principal of new 2.00% Convertible Exchange Senior Notes due December 15, 2037 (“2010 Notes”). On February 29, 2012, the Company entered into separate, privately-negotiated exchange agreements under which it retired $500.0 million in aggregate principal of the 2007 Notes for $500.0 million in aggregate principal of new 2.00% Convertible Senior Notes due March 1, 2042 (“2012 Notes”). On February 14, 2013, the Company entered into separate, privately-negotiated exchange agreements under which it retired $370.0 million in aggregate principal of the 2007 Notes for $370.0 million in aggregate principal of new 2.00% Convertible Senior Notes due December 15, 2043 (“2013 Notes”).

On November 14, 2013, the Company announced that it had issued a notice of redemption to the holders of its 2007 Notes to redeem any 2007 Notes outstanding on December 18, 2013 at a redemption price payable in cash equal to 100.00% of the principal amount of the 2007 Notes plus accrued and unpaid interest to, but not including, December 18, 2013. Holders of the 2007 Notes also had the option of putting the 2007 Notes to the Company as of December 13, 2013. The 2007 Notes were redeemed at their par value aggregating $405.0 million. Under ASC 470, the derecognition of the 2007 Notes did not result in a gain or loss as the fair value of the liability component of the 2007 Notes was determined to be equal to the consideration paid to redeem the 2007 Notes, and as a result, no value was allocated to the reacquisition of the conversion option.

The 2010 Notes, the 2012 Notes and the 2013 Notes are collectively referred to herein as the “Convertible Notes.”

Holders may require the Company to repurchase the Convertible Notes prior to maturity on the dates set forth below:

• the 2010 Notes on each of December 15, 2016, 2020 and 2025, December 13, 2030 and December 14, 2035;

• the 2012 Notes on each of March 1, 2018, 2022, 2027 and 2032 and March 2, 2037; and

• the 2013 Notes on each of December 15, 2017, 2022, 2027, 2032 and 2037.

Holders may also require the Company to repurchase the Convertible Notes upon a fundamental change, as defined in each of the applicable indentures. The Company may redeem all or a portion of the 2010 Notes at any time on or after December 19, 2016, all or a portion of the 2012 Notes at any time on or after March 6, 2018 and all or a portion of the 2013 Notes at any time on or after December 15, 2017. If, prior to maturity, a holder requires the Company to repurchase the Convertible Notes or the Company elects to redeem the Convertible Notes, the repurchase or redemption price of each Convertible Note will equal 100% of its principal amount, plus accrued and unpaid interest to, but excluding, the redemption or repurchase date, as applicable. On November 9, 2016, the Company announced that it would repurchase, on December 15, 2016, all of the outstanding 2010 Notes at a repurchase price payable in cash equal to 100% of the original principal amount of the 2010 Notes validly surrendered for repurchase and not withdrawn plus accrued and unpaid interest, if any, to, but not including, December 15, 2016, at the option of the holders of the 2010 Notes. The Company also announced on November 9, 2016, that it had elected to redeem, on December 19, 2016, all of the then outstanding 2010 Notes (those 2010 Notes not put to the Company on December 15, 2016 or validly submitted for conversion prior to December 16, 2016) at a redemption price payable in cash equal to 100% of the accreted principal amount of the 2010 Notes to be redeemed plus accrued and unpaid interest (including contingent interest, if any) to, but not including December 19, 2016.

It is the Company's current intent and policy to settle any conversion of the Convertible Notes as if the Company had elected to make either a net share settlement or all cash election, such that upon conversion, the Company intends to pay the holders in cash for the principal amount of the Convertible Notes and, if applicable shares of its common stock or cash to satisfy the premium based on a calculated daily conversion value. On November 9, 2016, the Company announced that it had made an irrevocable net share settlement election to settle any conversions of the 2010 Notes validly submitted on or after November 9, 2016 in cash.

The 2010, 2012, and 2013 Notes all bear interest at a rate of 2.00% per year on the principal amount, payable semi-annually in arrears in cash on June 15 and December 15, March 1 and September 1, and June 15 and December 15, respectively, of each year ending on December 15, 2016, March 1, 2018, and December 15, 2013, respectively. The 2013 Notes no longer bear interest payable at 2.00%. The 2010 Notes will accrete principal from December 15, 2016 at a rate that provides holders with an aggregate annual yield to maturity of 2.00% per year. The 2012 Notes will accrete principal from March 1, 2018 at a rate that provides holders with an aggregate annual yield to maturity of 2.00% per year. The 2013 Notes accrete principal from their date of issuance at a rate of 4.00% per year until and including December 15, 2017, and 2.00% per year thereafter. Beginning with the six month interest period commencing December 15, 2016, March 1, 2018 and December 15, 2017, the Company will pay contingent interest during any six month interest period to the holders of 2010, 2012 and 2013 Notes, respectively, if the “trading price”, as defined, of the 2010, 2012 and 2013 Notes for each of the five trading days ending on the second trading day immediately preceding the first day of the applicable six month interest period equals or exceeds 120% of the accreted principal amount of the 2010, 2012 and 2013 Notes. The holders of each of the 2010, 2012 or 2013 Notes may convert their respective Notes into shares of the Company’s common stock at a conversion price of approximately $23.03 per share, $31.175 per share and $38.59 per share, respectively, subject to adjustment, prior to the close of business on September 15, 2037, December 1, 2014 and September 15, 2043, respectively, subject to prior redemption or repurchase of the 2010, 2012, and 2013 Notes, respectively, under any of the following circumstances: (1) during any calendar quarter if the last reported sale price of the Company’s common stock exceeds 130% of the conversion price for at least 20 trading days in the 30 consecutive trading days ending on the last trading day of the preceding calendar quarter; (2) during the five business day period after any five consecutive trading day period in which the trading price per note for each day of such period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate on each such day; (3) if the notes have been called for redemption; or (4) upon the occurrence of specified corporate events. At the option of the holder, regardless of the foregoing circumstances, holders may convert their respective 2010, 2012 and 2013 Notes at any time on or after September 15, 2037, December 1, 2041 and September 15, 2043, respectively, through the close of business on the second scheduled trading day immediately preceding the maturity date. The conversion rate will not be adjusted for accrued interest or accreted principal in excess of the original $1,000 principal amount, as accrued interest and accreted principal will not be convertible into common stock. For both the 2012 and 2013 Notes none of these triggering events have occurred as of September 24, 2016.

During the fourth quarter of fiscal 2016, the closing price of the Company's common stock exceeded 130% of the applicable conversion price of its 2010 Notes on at least 20 of the last 30 consecutive trading days of the quarter and, on November 9, 2016, the Company announced that it had elected to redeem all of the then outstanding 2010 Notes on December 19, 2016. Therefore holders of the 2010 Notes are able to convert their notes during the first quarter of fiscal 2017. As such, the Company classified the $12.2 million carrying value of its 2010 Notes (which had a principal value of $12.3 million at September 24, 2016) as a current debt obligation. As of September 24, 2016, the if-converted value of the 2010 Notes exceeded the aggregate principal amount by approximately $7.9 million.

On various dates during the fourth quarter of fiscal 2016, the Company entered into privately negotiated repurchase transactions and extinguished $46.3 million principal amount of the 2010 Notes for total payments of $79.2 million. These amounts include the conversion premium resulting from the Company's stock price on the date of the transactions being in excess of the conversion price of $23.03 for the 2010 Notes. Under ASC 470, this transaction was accounted for as an extinguishment and derecognition of the 2010 Notes and resulted in a debt loss extinguishment of $0.8 million. In addition, $1.3 million principal was put to the Company during the quarter.

On various dates during the second quarter of fiscal 2016, the Company entered into privately negotiated repurchase transactions and extinguished $90.0 million and $136.6 million principal amount of the 2010 Notes and 2012 Notes, respectively, for total payments of $140.1 million and $171.3 million, respectively. These amounts include the conversion premium resulting from the Company's stock price on the date of the transactions being in excess of the conversion price of $23.03 and $31.175 for the 2010 Notes and 2012 Notes, respectively. Under ASC 470, these transactions were accounted for as an extinguishment and derecognition of the 2010 and 2012 Notes and resulted in an aggregate debt loss extinguishment of $4.5 million.

On various dates during the fourth quarter of fiscal 2015, the Company entered into privately negotiated repurchase transactions and extinguished $300.0 million principal of the 2010 Notes for a total payment of $543.7 million, which includes the conversion premium resulting from the Company's stock price on the date of the transaction being in excess of the conversion price of $23.03. Under ASC 470, this transaction was accounted for as an extinguishment and derecognition of the 2010 Notes and resulted in a debt loss extinguishment of $15.5 million.

In lieu of delivery of shares of the Company’s common stock in satisfaction of the Company’s obligation upon conversion of the Convertible Notes, the Company may elect to deliver cash or a combination of cash and shares of its common stock. If the Company elects to satisfy its conversion obligation in a combination of cash and shares of the Company’s common stock, the Company is required to deliver up to a specified dollar amount of cash per $1,000 original principal amount of Convertible Notes, and will settle the remainder of its conversion obligation in shares of its common stock, in each case based on the daily conversion value calculated as provided in the respective indentures for the Convertible Notes. This net share settlement election is in the Company’s sole discretion and does not require the consent of holders of the Convertible Notes. It is the Company’s current intent and policy to settle any conversion of the Convertible Notes as if the Company had elected to make the net share settlement election.

The Convertible Notes are the Company’s senior unsecured obligations and rank equally with all of its existing and future senior unsecured debt and prior to all future subordinated debt. The Convertible Notes are effectively subordinated to any future secured indebtedness to the extent of the collateral securing such indebtedness, and structurally subordinated to all indebtedness and other liabilities (including trade payables) of the Company’s subsidiaries.

Accounting for the Convertible Notes

The Convertible Notes have been recorded pursuant to FASB Staff Position (“FSP”) APB 14-1, Accounting for Convertible Debt Instruments That May Be Settled in Cash upon Conversion (Including Partial Cash Settlement) (FSP APB 14-1) (codified within ASC 470) since they can be settled in cash or partially in cash upon conversion. FSP APB 14-1 requires the liability and equity components of the convertible debt instrument to be separately accounted for in a manner that reflects the entity’s nonconvertible debt borrowing rate when interest expense is subsequently recognized. The excess of the debt’s principal amount over the amount allocated to the liability component is recognized as the value of the embedded conversion feature (“equity component”) within additional-paid-in capital in stockholders’ equity and amortized to interest expense over the expected life of the liability component (typically the date of the earliest redemption) using the effective interest method. The liability component is initially recorded at its fair value, which is calculated using a discounted cash flow technique. Key inputs used to estimate the fair value of the liability component included the Company’s estimated nonconvertible debt borrowing rate as of the measurement date (i.e., the date the Convertible Notes are issued), the amount and timing of cash flows, and the expected life of the Convertible Notes. The effective interest rate is estimated by comparing other companies’ debt issuances that had features similar to the Company’s debt excluding the conversion feature and who had similar credit ratings during the same annual period as the Company. In addition, third-party transaction costs are required to be allocated to the liability and equity components based on their relative values. The original issuance of the 2007 Notes and both exchange transactions for the 2010 Notes and 2012 Notes, which each included a derecognition and re-recognition, were accounted for under this accounting guidance.

The 2013 Notes exchange transaction was accounted for as a modification pursuant to ASC 470-50 and not an extinguishment because the terms of the two debt instruments were not substantially different. This determination was based on the fact that the present value of the cash flows on a creditor by creditor basis between the two debt instruments was less than 10% and the change in the fair value of the conversion option before and after the exchange transaction was less than 10%. As a result, there is no gain or loss from this exchange. As required, the Company recorded the increase in the fair value of the conversion option of $32.5 million from this exchange to additional paid-in-capital, net of deferred taxes. The Company determined the fair value of the conversion option for each debt instrument on the date of modification by calculating the fair value of each debt instrument using the binomial model and subtracting the fair value of the respective debt instrument’s liability component. The fair value of the liability component for each debt instrument was determined by using a discounted cash flow technique with an effective interest rate of 3.25% and 5.42% for the 2007 Notes and 2013 Notes, respectively. These rates represent the estimated nonconvertible borrowing rate with a maturity as of the measurement date consistent with the first put dates of each debt instrument. The difference between the debt’s fair value and the fair value of its liability component represents the value allocated to the debt’s conversion option. In addition, direct costs incurred for this exchange of $4.1 million were expensed as incurred within interest expense.

The Company accounted for the 2010 Notes and 2012 Notes extinguishments in fiscal 2016, discussed above, under the derecognition provisions of subtopic ASC 470-20-40, which requires the allocation of the fair value of the consideration transferred and transaction costs incurred to the extinguishment of the liability component and the reacquisition of the equity component. In connection with these transactions, the Company recorded a debt extinguishment loss on the 2010 Notes of $4.6 million and a debt extinguishment loss on the 2012 Notes of $0.7 million, for a total debt extinguishment loss of $5.3 million in fiscal 2016. The 2010 Notes debt extinguishment loss was comprised of the loss on the debt itself of $4.0 million, the write-off of the pro-rata amount of debt issuance costs of $0.4 million allocated to the notes retired, and allocated third party costs of $0.2 million. The 2012 Notes debt extinguishment loss was comprised of the write-off of the pro-rata amount of debt issuance costs of $0.5 million allocated to the notes retired, and allocated third party costs of $0.2 million. The loss on the debt itself was calculated as the difference between the fair value of the liability component immediately before the respective transactions and their related carrying values. The fair value of the liability component was calculated using a discounted cash flow technique, and the Company used effective interest rates of 2.71% for the 2010 Notes and 3.87% and 3.41% for the 2012 Notes, which had two valuation dates, representing the estimated rate for non-convertible debt (with similar features as the 2010 and 2012 Notes excluding the conversion feature) issued by a company with a credit rating similar to the Company. In addition, under this accounting standard, a portion of the fair value of the consideration transferred is allocated to the reacquisition of the equity component, which is the difference between the fair value of the consideration transferred and the fair value of the liability component immediately before the extinguishment. As a result, on a gross basis, $83.7 million related to the 2010 Notes and $38.9 million related to the 2012 Notes were allocated to the reacquisition of the equity component of the original instrument, which was recorded net of deferred taxes of $15.7 million and $12.5 million, respectively, within additional paid-in-capital.

The Company also accounted for the 2010 Notes extinguishment in fiscal 2015, discussed above, under the derecognition provisions of subtopic ASC 470-20-40. In connection with this transaction, the Company recorded a debt extinguishment loss of $15.5 million in the fourth quarter fiscal 2015. This debt extinguishment loss was comprised of the loss on the debt itself of $14.4 million, the write-off of the pro-rata amount of debt issuance costs of $0.7 million allocated to the notes retired, and allocated third party costs of $0.4 million. The fair value of the liability component was calculated using a discounted cash flow technique as described above, and the Company used an effective interest rate of 2.71% representing the estimated rate for non-convertible debt (with similar features as the 2010 Notes excluding the conversion feature) issued by a company with a credit rating similar to the Company. In addition, on a gross basis, $246.1 million was allocated to the reacquisition of the equity component of the original instrument, which was recorded net of deferred taxes of $29.2 million within additional paid-in-capital.

As of September 24, 2016 and September 26, 2015, the Convertible Notes and related equity components (recorded in additional paid-in-capital, net of deferred taxes) consisted of the following:

	2016			2015
2010 Notes principal amount	$	12.3		$	150.0
Unamortized discount and issuance costs (1)	(0.1		)	(8.2		)
Net carrying amount	$	12.2		$	141.8
Equity component, net of taxes	$	1.6		$	20.0
2012 Notes principal amount	$	363.4		$	500.0
Unamortized discount and issuance costs (1)	(9.5		)	(21.8		)
Net carrying amount	$	353.9		$	478.2
Equity component, net of taxes	$	35.8		$	49.2
2013 Notes principal amount	$	370.0		$	370.0
Principal accretion	57.1			40.5
Unamortized discount and issuance costs (1)	(17.5		)	(29.9		)
Net carrying amount	$	409.6		$	380.6
Equity component, net of taxes	$	131.5		$	131.5

(1) In connection with the adoption of ASU 2015-03, debt issuance costs are presented as direct deduction from the debt liability consistent with the presentation of a debt discount.

Interest expense under the Convertible Notes is as follows:

	Years Ended
	September 24, 2016		September 26, 2015		September 27, 2014
Amortization of debt discount	$	22.3	$	34.9	$	37.1
Amortization of deferred financing costs	1.1		1.7		1.9
Principal accretion	16.6		15.9		15.3
Non-cash interest expense	40.0		52.5		54.3
2.00% accrued interest (cash)	10.0		18.2		22.3
	$	50.0	$	70.7	$	76.6

If the Company fails to comply with the reporting obligations contained in the agreements for the Convertible Notes, the sole remedy of the holders of the Convertible Notes for the first 90 days following such event of default consists exclusively of the right to receive an extension fee in an amount equal to 0.25% of the accreted principal amount of the Convertible Notes. Based on its evaluation of the Convertible Notes in accordance with ASC 815, the Company determined that the Convertible Notes contain a single embedded derivative, comprising both the contingent interest feature and the filing failure penalty payment, requiring bifurcation as the features are not clearly and closely related to the host instrument. The Company has determined that the value of this embedded derivative was nominal as of September 24, 2016 and September 26, 2015.

As of September 24, 2016, upon conversion, including the potential premium that could be payable on a fundamental change (as defined), the Company would issue a maximum of approximately 29.6 million shares of common stock to the holders of the Convertible Notes.

Accounts Receivable Securitization Program

On April 25, 2016, the Company entered into a one-year $200.0 million accounts receivable securitization program (the "Securitization Program") with several of its wholly owned subsidiaries and certain financial institutions. Under the terms of the Securitization Program, the Company and certain of its wholly-owned subsidiaries sell their respective customer receivables to a bankruptcy remote special purpose entity, which is also a wholly-owned subsidiary of the Company. In addition, the Company also contributed a portion of its customer receivables to the special purpose entity in connection with its establishment. The Company retains servicing responsibility. The special purpose entity, as borrower, and the Company, as servicer, have entered into a Credit and Security Agreement with several lenders pursuant to which the special purpose entity may borrow up to $200.0 million from the lenders, with the loans secured by the receivables. The amount that the special purpose entity may borrow at a given point in time is determined based on the amount of qualifying receivables that are present in the special purpose entity at such point in time. The entire amount available was borrowed in the third quarter of fiscal 2016. Borrowings outstanding under the Securitization Program bear interest at LIBOR plus the applicable margin of 0.7% and are included as a component of current liabilities in the Company's consolidated balance sheet, while the accounts receivable securing these obligations remain as a component of net receivables in the Company's consolidated balance sheet. The Company and the special purpose entity are operated and maintained as separate legal entities. The assets of the special purpose entity secure the amounts borrowed and cannot be used to pay other debts or liabilities of the Company. The special purpose entity is not a guarantor under the Company's Credit Agreement and is not a guarantor of the Company's 2022 Senior Notes.

Borrowings under the Securitization Program for fiscal 2016 had a weighted-average interest rate of 1.17%. Interest expense under the Securitization Program aggregated $1.0 million for fiscal 2016. The interest rate on the amounts outstanding at September 24, 2016 was 1.22%.

The Credit and Security Agreement contains customary representations and warranties and events of default, including payment defaults, breach of representations and warranties, covenant defaults, and an event of default upon a change of control of the Company. In addition, it contains financial covenants consistent with that of the Credit Agreement. As of September 24, 2016, the Company was in compliance with the Credit and Security Agreement covenants.

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Fair Value Measurements

12 Months Ended

Sep. 24, 2016

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

The Company applies the provisions of ASC 820 for its financial assets and liabilities that are re-measured and reported at fair value each reporting period and its nonfinancial assets and liabilities that are re-measured and reported at fair value on a non-recurring basis. Fair value is the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining fair value, the Company considers the principal or most advantageous market in which it would transact and considers assumptions that market participants would use when pricing the asset or liability.

Fair Value Hierarchy

ASC 820 establishes a three-level valuation hierarchy for disclosure of fair value measurements. Financial assets and liabilities are categorized within the valuation hierarchy based upon the lowest level of input that is significant to the measurement of fair value. The three levels of the hierarchy are defined as follows:

• Level 1—Inputs to the valuation methodology are quoted market prices for identical assets or liabilities.

• Level 2—Inputs to the valuation methodology are other observable inputs, including quoted market prices for similar assets or liabilities and market-corroborated inputs.

• Level 3—Inputs to the valuation methodology are unobservable inputs based on management’s best estimate of inputs market participants would use in pricing the asset or liability at the measurement date, including assumptions about risk.

Assets/Liabilities Measured and Recorded at Fair Value on a Recurring Basis

The Company has investments in publicly-traded companies, which are valued using quoted market prices, representing Level 1 assets, and investments in derivative instruments comprised of interest rate caps and forward foreign currency contracts, which are valued using analyses obtained from independent third party valuation specialists based on market observable inputs, representing Level 2 assets. The fair values of the Company's interest rate caps and forward foreign currency contracts represent the estimated amounts the Company would receive or pay to terminate the contracts. Refer to Note 2 for further discussion and information on the equity investments, the interest rate caps and forward foreign currency contracts.

The Company has a payment obligation to the participants under its Nonqualified Deferred Compensation Plan (“DCP”). This liability is recorded at fair value based on the underlying value of certain hypothetical investments under the DCP as designated by each participant for their benefit. Since the value of the DCP obligation is based on market prices, the liability is classified within Level 1.

Assets and liabilities measured and recorded at fair value on a recurring basis consisted of the following:

			Fair Value Measurements at September 24, 2016
	Carrying Value		Quoted Prices in Active Market for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Equity securities	$	1.0	$	1.0	$	—	$	—
Interest rate caps - derivative	1.4		—		1.4		—
Forward foreign currency contracts	0.2		—		0.2		—
Total	$	2.6	$	1.0	$	1.6	$	—
Liabilities:
Deferred compensation liabilities	$	37.0	$	37.0	$	—	$	—
Forward foreign currency contracts	1.3		—		1.3		—
Total	$	38.3	$	37.0	$	1.3	$	—

			Fair Value Measurements at September 26, 2015
	Carrying Value		Quoted Prices in Active Market for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Marketable securities:
Equity securities	$	15.2	$	15.2	$	—	$	—
Mutual funds	5.6		5.6		—		—
Interest rate cap- derivative	6.9		—		6.9		—
Total	$	27.7	$	20.8	$	6.9	$	—
Liabilities:
Deferred compensation liabilities	$	29.4	$	29.4	$	—	$	—
Total	$	29.4	$	29.4	$	—	$	—

There were no Level 3 assets or liabilities outstanding during fiscal 2016 and 2015. Changes in the fair value of recurring fair value measurements using significant unobservable inputs (Level 3), which solely consisted of contingent consideration liabilities, during the year ended September 27, 2014 were as follows:

	2014
Balance at beginning of period	$	3.8
Payments / Accruals	(3.8		)
Balance at end of period	$	—

Assets Measured and Recorded at Fair Value on a Nonrecurring Basis

The Company remeasures the fair value of certain assets and liabilities upon the occurrence of certain events. Such assets are comprised of cost-method equity investments and long-lived assets, including property, plant and equipment, intangible assets and goodwill.

In the fourth quarter of fiscal 2014, the Company recorded a $5.1 million impairment charge within its Diagnostics segment to record its remaining IPR&D assets at fair value. This adjustment falls within Level 3 of the fair value hierarchy.

In the second quarter of fiscal 2014, the Company recorded an impairment charge of $28.6 million within its Breast Health segment, which was comprised of $27.1 million for intangible assets and $1.5 million for property and equipment. This adjustment falls within Level 3 of the fair value hierarchy.

In the first quarter of fiscal 2014, the Company recorded a $3.1 million impairment charge to record certain of its buildings at fair value related to the shutdown of its Hitec Imaging organic photoconductor manufacturing line. This adjustment falls within Level 3 of the fair value hierarchy.

The Company holds certain cost-method equity investments in non-publicly traded securities aggregating $3.5 million and $4.2 million at September 24, 2016 and September 26, 2015, respectively, which are included in other long-term assets on the Company’s Consolidated Balance Sheets. These investments are generally carried at cost, less any write-downs for other-than-temporary impairment charges. To determine the fair value of these investments, the Company uses all available financial information related to the entities, including information based on recent or pending third-party equity investments in these entities. In certain instances, a cost method investment’s fair value is not estimated as there are no identified events or changes in circumstances that may have a significant adverse effect on the fair value of the investment and to do so would be impractical. During fiscal 2014, the Company recorded other-than-temporary impairment charges of $6.9 million related to its cost-method equity investments to adjust their carrying amounts to fair value.

The following chart depicts certain assets presented at fair value using level 3 inputs under the fair value hierarchy measured on a nonrecurring basis for which the Company has recorded impairment charges:

			Fair Value Measurements Using
	Fair Value		Quoted Prices in Active Market for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)	Significant Unobservable Inputs (Level 3)		Total Losses
Fiscal 2014:
Intangible assets	$	36.2	—	—	$	36.2	$	(32.2	)
Property and equipment	1.0		—	—	1.0		(1.5		)
Buildings	1.4		—	—	1.4		(3.1		)
Cost-method equity investments	0.8		—	—	0.8		(6.9		)
							$	(43.7	)

The above fair value amounts represent only those individual assets remeasured and not the consolidated balances. Refer to Note 4 for disclosure of the nonrecurring fair value measurement related to the debt extinguishment losses recorded in fiscal 2016, 2015 and 2014.

Disclosure of Fair Value of Financial Instruments

The Company’s financial instruments mainly consist of cash and cash equivalents, accounts receivable, marketable securities, cost-method equity investments, interest rate caps, forward foreign currency contracts, insurance contracts, DCP liability, accounts payable and debt obligations. The carrying amounts of the Company’s cash and cash equivalents, accounts receivable and accounts payable approximate their fair value due to the short-term nature of these instruments. The Company’s marketable securities, interest rate caps, and forward foreign currency contracts are recorded at fair value. The carrying amount of the insurance contracts are recorded at the cash surrender value, as required by U.S. GAAP, which approximates fair value, and the related DCP liability is recorded at fair value. The Company believes the carrying amounts of its cost-method equity investments approximate fair value.

Amounts outstanding under the Company’s Credit Agreement and Securitization Program of $1.41 billion and $200.0 million aggregate principal, respectively, as of September 24, 2016 are subject to variable rates of interest based on current market rates, and as such, the Company believes the carrying amount of these obligations approximates fair value. The Company’s 2022 Senior Notes had a fair value of approximately $1.06 billion and $1.03 billion as of September 24, 2016 and September 26, 2015, respectively, based on their trading price, representing a Level 1 measurement. The fair value of the Company’s Convertible Notes is based on the trading prices of the respective notes and represents a Level 1 measurement. Refer to Note 4 for the carrying amounts of the various components of the Company’s debt.

The estimated fair values of the Company’s Convertible Notes at September 24, 2016 and September 26, 2015 are as follows:

	2016		2015
2010 Notes	20.2		264.1
2012 Notes	481.9		688.2
2013 Notes	458.8		471.8
	$	960.9	$	1,424.1

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Income Taxes

12 Months Ended

Sep. 24, 2016

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The Company’s income before income taxes consisted of the following:

	Years ended
	September 24, 2016		September 26, 2015		September 27, 2014
Domestic	$	310.7	$	158.3	$	95.1
Foreign	104.6		18.9		(47.0		)
	$	415.3	$	177.2	$	48.1

The provision for income taxes contained the following components:

	Years ended
	September 24, 2016			September 26, 2015			September 27, 2014
Federal:
Current	$	209.0		$	185.2		$	242.2
Deferred	(122.7		)	(137.0		)	(212.5		)
	86.3			48.2			29.7
State:
Current	16.6			3.5			22.1
Deferred	(22.7		)	(11.0		)	(24.7		)
	(6.1		)	(7.5		)	(2.6		)
Foreign:
Current	14.7			5.7			9.6
Deferred	(10.4		)	(0.8		)	(5.9		)
	4.3			4.9			3.7
	$	84.5		$	45.6		$	30.8

The income tax provision differed from the tax provision computed at the U.S. federal statutory rate due to the following:

	Years ended
	September 24, 2016		September 26, 2015		September 27, 2014
Income tax provision at federal statutory rate	35.0	%	35.0	%	35.0	%
Increase (decrease) in tax resulting from:
Domestic production activities deduction	(5.0	)	(10.1	)	(30.6	)
State income taxes, net of federal benefit	2.0		1.2		4.3
Tax credits	(3.2	)	(3.8	)	(5.2	)
Unrecognized tax benefits	2.4		(1.8	)	2.5
Cumulative translation adjustment write-off	—		1.9		—
Non-deductible compensation	0.1		1.9		5.5
Foreign rate differential	(6.1	)	(1.6	)	10.7
Change in state deferred tax rate	(1.8	)	—		—
Change in valuation allowance	(3.4	)	1.0		35.4
Other	0.3		2.1		6.3
	20.3	%	25.8	%	63.9	%

The Company's effective tax rate in fiscal 2016 was lower than the statutory rate primarily due to earnings in jurisdictions subject to lower tax rates, the domestic production activities deduction benefit, and a change in the valuation allowance related to the sale of a marketable security with a higher tax than book basis.

The Company's effective tax rate in fiscal 2015 was lower than the statutory rate primarily due to the domestic production activities deduction benefit.

The Company’s effective tax rate in fiscal 2014 was higher than the statutory rate primarily due to unbenefited foreign losses partially offset by the domestic production activities deduction benefit.

The Company uses the asset and liability method to account for income taxes in accordance with ASC 740, Income Taxes. Under this method, deferred income taxes are recognized for the future tax consequences of differences between the tax and financial accounting bases of assets and liabilities at each reporting period. Deferred income taxes are based on enacted tax laws and statutory tax rates applicable to the period in which these differences are expected to affect taxable income. A valuation allowance is established when necessary to reduce deferred tax assets to the amounts expected to be realized.

In November 2015, the FASB issued ASU No. 2015-17, Balance Sheet Classification of Deferred Taxes. ASU 2015-17 simplifies the presentation of deferred income taxes by eliminating the requirement for entities to separate deferred income tax liabilities and assets into current and noncurrent amounts in the balance sheet. Rather, it requires deferred tax assets andliabilities to be classified as noncurrent in the balance sheet. The Company adopted this standard prospectively in the first quarter of fiscal 2016, and prior periods were not retrospectively adjusted.

The Company’s significant deferred tax assets and liabilities were as follows:

	September 24, 2016			September 26, 2015
Deferred tax assets
Net operating loss carryforwards	$	40.0		$	45.4
Capital losses	19.1			25.7
Non-deductible accruals	21.1			16.3
Non-deductible reserves	31.1			26.8
Stock-based compensation	34.8			24.3
Research and other credits	10.7			14.5
Nonqualified deferred compensation plan	14.1			11.3
Other temporary differences	9.2			10.2
	180.1			174.5
Less: valuation allowance	(46.2		)	(60.9		)
	$	133.9		$	113.6
Deferred tax liabilities
Depreciation and amortization	$	(1,030.8	)	$	(1,171.5	)
Debt discounts and deferrals	(75.1		)	(100.1		)
Debt issuance costs	(1.3		)	(1.4		)
	$	(1,107.2	)	$	(1,273.0	)
	$	(973.3	)	$	(1,159.4	)

Under ASC 740, the Company can only recognize a deferred tax asset for the future benefit to the extent that it is “more likely than not” that these assets will be realized. After considering all available positive and negative evidence, the Company established a valuation allowance against specifically identified deferred tax assets because it is more-likely-than-not that these assets will not be realized. In making this determination, the Company considered numerous factors including historical profitability, estimated future taxable income and the character of such income. The valuation allowance decreased$14.7 million in fiscal 2016 from fiscal 2015 primarily due to a change in the valuation allowance related to the sale of a marketable security with a higher tax than book basis, foreign exchange rate fluctuations, and a change in judgment regarding the realizability of foreign net operating losses.

At September 24, 2016, the Company had $13.9 million, $63.9 million and $45.0 million in gross federal, state, and foreign net operating losses, respectively, and $0.3 million, $13.7 million and $1.6 million in federal, state, and foreign credit carryforwards, respectively. These losses and credits expire between 2017 and 2036, except for $44.6 million in losses and $8.9 million in credits that have unlimited carryforward periods. The federal, state, and foreign net operating losses exclude $4.5 million, $151.3 million and $46.5 million, respectively, in net operating losses, that the Company expects will expire unutilized.

At September 24, 2016, the Company had $163.6 million in gross unrecognized tax benefits excluding interest, of which $80.1 million, if recognized, would reduce the Company's effective tax rate. At September 26, 2015, the Company had $154.7 million in gross unrecognized tax benefits excluding interest, of which $74.9 million, if recognized, would have reduced the Company's effective tax rate. In the next twelve months it is reasonably possible that the Company will reduce its gross unrecognized tax benefits by up to $1.0 million due to expiring statutes of limitations.

The Company’s unrecognized income tax benefits activity for fiscal 2016 and 2015 was as follows:

	2016			2015
Balance at beginning of fiscal year	$	154.7		$	137.0
Tax positions related to current year:
Additions	23.9			11.0
Reductions	—			—
Tax positions related to prior years:
Additions related to change in estimate	1.1			21.1
Reductions	(6.9		)	(10.3		)
Payments	(6.0		)	(0.8		)
Lapses in statutes of limitations and settlements	(3.2		)	(3.7		)
Acquired tax positions:
Additions related to reserves acquired from acquisitions	—			0.4
Balance as of the end of the fiscal year	$	163.6		$	154.7

The Company’s policy is to include accrued interest and penalties related to unrecognized tax benefits and income tax liabilities, when applicable, in income tax expense. As of September 24, 2016 and September 26, 2015, gross accrued interest was $13.1 million and $9.9 million, respectively. At September 24, 2016, no significant penalties have been accrued.

The Company and its subsidiaries are subject to various federal, state, and foreign income taxes. The Company’s U.S. Federal income tax returns are no longer subject to examination prior to fiscal 2011. State income tax returns are generally no longer subject to examination prior to fiscal year 2012. The Internal Revenue Service concluded its fiscal 2011 federal income tax return examination and commenced its fiscal 2013 and 2014 federal income tax examination in fiscal 2016. The Company is also undergoing tax examinations in Germany for fiscal 2011 through 2014. Massachusetts began a state tax examination for fiscal 2012 through 2013 in fiscal 2016.

The Company intends to reinvest, indefinitely, approximately $187.6 million in unremitted foreign earnings. It is not practicable to estimate the additional taxes that may be payable upon repatriation.

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Stockholders' Equity and Stock-Based Compensation

12 Months Ended

Sep. 24, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stockholders' Equity and Stock-Based Compensation

Stockholders' Equity and Stock-Based Compensation

Stock Repurchase Program

On November 11, 2013, the Company announced that its Board of Directors authorized the repurchase of up to $250 million of the Company’s outstanding common stock over a three-year period. Under the stock repurchase program, the Company is authorized to repurchase, from time-to-time, shares of its outstanding common stock on the open market or in privately negotiated transactions in the United States. During fiscal 2016, the Company repurchased 7.3 million shares of its common stock for total consideration of $250.0 million. This share repurchase authorization is now fully utilized.

On June 21, 2016, the Company's Board of Directors authorized the repurchase of up to an additional $500.0 million of the Company's outstanding common stock over the next five years. There were no repurchases of common stock made under this authorization during fiscal 2016.

Stock-Based Compensation

Equity Compensation Plans

The Company has one share-based compensation plan pursuant to which awards are currently being made—the 2008 amended and restated Equity Incentive Plan (“2008 Equity Plan”). The purpose of the 2008 Equity Plan is to provide stock options, restricted stock units and other equity interests in the Company to employees, officers, directors, consultants and advisors of the Company and any other person who is determined by the Board of Directors to have made (or is expected to make) contributions to the Company. The 2008 Equity Plan is administered by the Board of Directors of the Company, and a total of 31.5 million shares were reserved for issuance under this plan. As of September 24, 2016, the Company had 8.3 million shares available for future grant under the 2008 Equity Plan.

The following presents stock-based compensation expense in the Company’s Consolidated Statements of Operations in fiscal 2016, 2015 and 2014:

	2016		2015		2014
Cost of revenues	$	10.5	$	8.7	$	7.3
Research and development	10.8		8.6		8.4
Selling and marketing	10.9		8.8		8.2
General and administrative	32.8		29.1		19.5
Restructuring and divestiture	0.4		4.1		6.6
	$	65.4	$	59.3	$	50.0

Grant-Date Fair Value

The Company uses a binomial model to determine the fair value of its stock options. The Company considers a number of factors to determine the fair value of options including the assistance of an outside valuation adviser. Information pertaining to stock options granted during fiscal 2016, 2015 and 2014 and related assumptions are noted in the following table:

	Years ended
	September 24, 2016			September 26, 2015			September 27, 2014
Options granted (in millions)	1.1			1.3			2.4
Weighted-average exercise price	$	39.32		$	27.68		$	22.01
Weighted-average grant date fair value	$	12.91		$	9.95		$	7.67
Assumptions:
Risk-free interest rates	1.6		%	1.7		%	1.2		%
Expected life (in years)	4.7			5.3			4.4
Expected volatility	37.8		%	38.6		%	41.4		%
Dividend yield	—			—			—

The risk-free interest rate is based on a treasury instrument whose term is consistent with the expected life of the stock options. In projecting expected stock price volatility, the Company uses a combination of historical stock price volatility and implied volatility from observable market prices of similar equity instruments. The Company estimated the expected life of stock options based on historical experience using employee exercise and option expiration data.

In connection with appointing Stephen P. MacMillan as its new President and Chief Executive Officer in December 2013, the Company granted approximately 0.1 million market stock units ("MSUs"). The MSUs vest in three separate tranches in an amount of 1/3rd of the total amount of the award based on the Company’s stock price meeting certain defined average stock prices for 30 consecutive trading days. These MSUs were valued at an average of $18.65 per share using the Monte Carlo simulation model and each tranche had its own derived service period. The Company recognized compensation expense under the accelerated method as prescribed by ASC 718 in fiscal 2014 through a portion of fiscal 2015, and all tranches have vested due to the defined average stock prices being met for the required period. In addition, per the terms of his employment agreement, the Company granted 0.2 million restricted stock units ("RSUs") to match Mr. MacMillan’s purchase of 0.2 million shares of the Company’s common stock on the open market in the second quarter of fiscal 2014. The RSUs cliff vest three years from the date of grant, and the Company is accounting for this grant as a liability award pursuant to ASC 718 because this RSU award contains an additional vesting condition (the requirement that Mr. MacMillan retain the matching shares during the vesting period) that is not service, performance or market based. As such, this award is marked-to-market at each reporting period, and at September 24, 2016, $7.8 million has been recorded as a liability for this award.

Stock-Based Compensation Expense Attribution

The Company uses the straight-line attribution method to recognize stock-based compensation expense for stock options and RSUs. The vesting term of stock options is generally four or five years with annual vesting of 25% and 20% per year, respectively, on the anniversary of the grant date, and RSUs generally vest over three or four years with annual vesting at 33% and 25% per year, respectively, on the anniversary of the grant date. Effective in the fourth quarter of fiscal 2016, the Company implemented a retirement provision providing for the continued vesting of equity awards granted after November 6, 2015 once an employee meets certain age and years of service criteria and retires from the Company. This provision from an accounting perspective can result in a shorter requisite service period for certain employees, resulting in accelerated stock-based compensation expense. Since this provision affected previously granted awards, it was accounted for as a modification and the Company recognized an additional $4.0 million of expense in the fourth quarter of fiscal 2016.

The amount of stock-based compensation recognized during a period is based on the value of the portion of the awards that are ultimately expected to vest. ASC 718 requires forfeitures to be estimated at the time granted and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Based on an analysis of historical forfeitures, the Company has determined a specific forfeiture rate for certain employee groups and has applied forfeiture rates ranging from 0% to 7.0% as of September 24, 2016 depending on the specific employee group. This analysis is re-evaluated annually and the forfeiture rate will be adjusted as necessary. Ultimately, the actual stock-based compensation expense recognized will only be for those stock options and RSUs that vest.

Stock-based compensation expense related to stock options was $10.9 million, $12.2 million, and $16.3 million in fiscal 2016, 2015 and 2014, respectively. Stock compensation expense related to stock units, including RSUs, performance stock units ("PSUs") and MSUs, was $50.5 million, $43.7 million, and $30.6 million in fiscal 2016, 2015 and 2014, respectively. The related tax benefit recorded in the Consolidated Statements of Operations was $23.1 million, $17.7 million and $15.3 million in fiscal 2016, 2015 and 2014, respectively. Included within stock-based compensation expense in fiscal 2016, 2015 and 2014 is $0.4 million, $4.1 million and $6.6 million, respectively, related to modification accounting, the acceleration of vesting of certain retention RSUs provided under their original terms upon termination, and the acceleration of vesting for certain options assumed in the Gen-Probe acquisition related to employees who were terminated in connection with the Company’s restructuring action to consolidate its Diagnostics operations. The original terms of the stock options assumed in the Gen-Probe acquisition provided for acceleration upon a change-in-control and termination within 18 months of the change-in-control. At September 24, 2016, there was $21.2 million and $66.6 million of unrecognized compensation expense related to stock options and RSUs, respectively, to be recognized over a weighted average period of 2.8 years and 2.0 years, respectively.

Share Based Payment Activity

The following table summarizes all stock option activity under the Company’s stock option plans for the year ended September 24, 2016:

	Number of Shares (in millions)		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (in Years)	Aggregate Intrinsic Value (in millions)
Options outstanding at September 26, 2015	6.7		$	22.21	4.9	$	119.1
Granted	1.1		39.32
Canceled/ forfeited	(0.5	)	27.00
Exercised	(1.2	)	19.55			$	21.6
Options outstanding at September 24, 2016	6.1		$	25.37	4.9	$	80.1
Options exercisable at September 24, 2016	3.0		$	21.95	3.1	$	48.8
Options vested and expected to vest at September 24, 2016 (1)	5.9		$	25.32	4.9	$	79.0

(1) This represents the number of vested stock options as of September 24, 2016 plus the unvested outstanding options at September 24, 2016 expected to vest in the future, adjusted for estimated forfeitures.

During fiscal 2015 and 2014, the total intrinsic value of options exercised (i.e., the difference between the market price on the date of exercise and the price paid by the employee to exercise the options) was $42.0 million and $34.7 million, respectively.

A summary of the Company’s RSU activity during the year ended September 24, 2016 is presented below:

Non-vested Shares	Number of Shares (in millions)		Weighted-Average Grant-Date  Fair Value
Non-vested at September 26, 2015	3.7		$	24.54
Granted	1.0		39.38
Vested	(1.2	)	22.96
Forfeited	(0.4	)	25.74
Non-vested at September 24, 2016	3.1		$	29.98

The number of RSUs vested includes shares withheld on behalf of employees to satisfy minimum statutory tax withholding requirements. The Company pays the minimum statutory tax withholding requirement on behalf of its employees. During fiscal 2016, 2015 and 2014 the total fair value of RSUs vested was $28.4 million, $27.2 million and $22.6 million, respectively.

The Company also granted approximately 0.2 million and 0.3 million PSUs during fiscal 2016 and 2015, respectively, to members of its senior management team, which have a weighted-average grant date fair value of $39.72 and $26.58, respectively. Each recipient of the PSUs is eligible to receive between zero and 200% of the target number of shares of the Company’s common stock at the end of three years provided the Company’s defined Return on Invested Capital metrics are achieved. The Company is recognizing compensation expense ratably over the required service period based on its estimate of the number of shares will vest upon achieving the measurement criteria. If there is a change in the estimate of the number of shares that are probable of vesting, the Company will cumulatively adjust compensation expense in the period that the change in estimate is made.

Employee Stock Purchase Plan

In March 2012, the Company’s stockholders approved the Hologic, Inc. 2012 Employee Stock Purchase Plan (“2012 ESPP”), which provides for the granting of up to 2.5 million shares of the Company’s common stock to eligible employees. The 2012 ESPP plan period is semi-annual and allows participants to purchase the Company’s common stock at 85% of the lower of (i) the market value per share of the common stock on the first day of the offering period or (ii) the market value per share of the common stock on the purchase date. The first plan period began on July 1, 2012. Stock-based compensation expense in fiscal 2016, 2015 and 2014 was $4.0 million, $3.4 million and $3.1 million, respectively.

The Company uses the Black-Scholes model to estimate the fair value of shares to be issued as of the grant date using the following weighted average assumptions:

	September 24, 2016		September 26, 2015		September 27, 2014
Assumptions:
Risk-free interest rates	0.34	%	0.10	%	0.08	%
Expected life (in years)	0.5		0.5		0.5
Expected volatility	27.2	%	27.4	%	30.0	%
Dividend yield	—		—		—

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Profit Sharing 401(k) Plan

12 Months Ended

Sep. 24, 2016

Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]

Profit Sharing 401(k) Plan

Profit Sharing 401(k) Plan

The Company has a qualified profit sharing plan covering substantially all of its employees. The Company made contributions of $16.2 million, $14.4 million and $13.3 million for fiscal 2016, 2015 and 2014, respectively.

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Nonqualified Deferred Compensation Plan

12 Months Ended

Sep. 24, 2016

Compensation Related Costs [Abstract]

Nonqualified Deferred Compensation Plan

Deferred Compensation Plans

Nonqualified Deferred Compensation Plan

Effective March 15, 2006, the Company adopted its DCP to provide non-qualified retirement benefits to a select group of executive officers, senior management and highly compensated employees of the Company. Eligible employees may elect to contribute up to 75% of their annual base salary and 100% of their annual bonus to the DCP and such employee contributions are 100% vested. In addition, the Company may elect to make annual discretionary contributions on behalf of participants in the DCP. Each Company contribution is subject to a three-year vesting schedule, such that each contribution vests one third annually. Employee contributions are recorded within accrued expenses.

Upon enrollment into the DCP, employees make investment elections for both their voluntary contributions and discretionary contributions, if any, made by the Company. Earnings and losses on contributions based on these investment elections are recorded as a component of compensation expense in the period earned.

Annually, the Compensation Committee of the Board of Directors has approved a discretionary cash contribution to the DCP for each year. Discretionary contributions by the Company to the DCP are held in a Rabbi Trust. The Company is recording compensation expense for the DCP discretionary contributions ratably over the three-year vesting period of each annual contribution, unless the participant meets the plan retirement provision of reaching a certain age and years of service criteria in which case the expense is accelerated to match the required service period to receive such benefit. Under the DCP, the Company recorded compensation expense of $3.1 million, $1.8 million and $3.7 million in fiscal 2016, 2015 and 2014, respectively. The full amount of the discretionary contribution, net of forfeitures, along with employee deferrals is recorded within accrued expenses and totaled $37.0 million and $29.4 million at September 24, 2016 and September 26, 2015, respectively.

The Company has purchased Company-owned group life insurance contracts, in which both voluntary and discretionary Company DCP contributions are invested, to partially fund payment of the Company’s obligation to the DCP participants. The total amount invested at September 24, 2016 and September 26, 2015 was $36.0 million and $27.5 million, respectively. The values of these life insurance contracts are recorded in other long-term assets. Changes in the cash surrender value of life insurance contracts, which were not significant in fiscal 2016, 2015 and 2014, are recorded within other income (expense), net. In fiscal 2015, the Company had an additional $5.6 million of investments in mutual funds to fund the DCP which were sold in fiscal 2016 and replaced with life insurance contracts.

Deferred Equity Plan

Effective September 17, 2015, the Company adopted the Hologic, Inc. Deferred Equity Plan (the “DEP”). The DEP is designed to allow executives and non-employee Directors to accumulate Company stock in a tax-efficient manner to meet their long-term equity accumulation goals and shareholder ownership guidelines. Under the DEP, eligible participants may elect to defer the settlement of RSUs and PSUs granted under the 2008 Equity Plan until separation from service or separation from service plus a fixed number of years. Participants may defer settlement by vesting tranche. Although the equity will vest on schedule, if deferral of settlement is elected, no shares will be issued until the settlement date. The settlement date will be the earlier of death, disability, change in control of the Company or separation from service plus the number of years of deferral elected by the participant. While these shares upon vesting are not distributed to the individuals and are not outstanding, these shares will be included in basic weighted average shares outstanding used to calculate earnings per share.

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Commitments and Contingencies

12 Months Ended

Sep. 24, 2016

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Finance Lease Obligations

The Company has two non-cancelable lease agreements for buildings that are primarily used for manufacturing. The Company was responsible for a significant portion of the construction costs, and in accordance with ASC 840, Leases, Subsection 40-15-5, the Company was deemed to be the owner of the respective buildings during the construction period. At the completion of the construction period, the Company reviewed the lease for potential sale-leaseback treatment in accordance with ASC 840, Subsection 40, Sale-Leaseback Transactions. Based on its analysis, the Company determined that the lease did not qualify for sale-leaseback treatment. Therefore, the building, leasehold improvements and associated liabilities remain on the Company’s financial statements throughout the lease term, and the building and leasehold improvements are being depreciated on a straight line basis over their estimated useful lives of 35 years. The Company recorded the fair market value of the buildings and land aggregating $28.3 million within property and equipment on its Consolidated Balance Sheets. Depreciation expense related to the buildings and land is recorded within depreciation in the Company's Consolidated Statements of Cash Flows. During fiscal 2016, the Company executed an amendment to one of the leases extending the term to 2024, and a renewal option was removed. There were no other significant provisions to the terms of the lease agreement. At September 24, 2016, the Company has recorded $2.9 million in accrued expenses and $34.8 million in other long-term liabilities related to these obligations. The current term of the leases is for a period of approximately 10 and 8 years, respectively, with the option to extend for one lease for two consecutive 5-year terms and the other for one5-year term.

Future minimum lease payments, including principal and interest, under these leases were as follows at September 24, 2016:

Fiscal 2017	$	3.1
Fiscal 2018	2.9
Fiscal 2019	1.2
Fiscal 2020	1.2
Fiscal 2021	1.2
Thereafter	2.8
Total minimum payments	12.4
Less-amount representing interest	(3.9		)
Total	$	8.5

Non-cancelable Purchase and Royalty Commitments

The Company has certain non-cancelable purchase obligations primarily related to inventory purchases and diagnostics instruments, primarily the Tigris and Panther systems, and to a lesser extent other operating expense commitments. These obligations are not recorded in the Consolidated Balance Sheets. For reasons of quality assurance, sole source availability or cost effectiveness, certain key components and raw materials and instruments are available only from a sole supplier and the Company has certain long-term supply contracts to assure continuity of supply. At September 24, 2016, purchase commitments are as follows:

Fiscal 2017	$	58.5
Fiscal 2018	15.6
Fiscal 2019	13.0
Total	$	87.1

In connection with its R&D efforts, the Company has various license agreements with unrelated parties that provide the Company with rights to develop and market products using certain technology and patent rights. Terms of the various license agreements require the Company to pay royalties ranging from less than 1% up to 35% of future sales on products using the specified technology. Such agreements generally provide for a term that commences upon execution and continues until expiration of the last patent covering the licensed technology. Under certain of these agreements, the Company is required to pay minimum annual royalty payments regardless of the level of sales. In addition, the Company has commitments for minimum payments under certain collaboration agreements. At September 24, 2016, minimum commitments for these agreements are as follows:

Fiscal 2017	$	0.7
Fiscal 2018	0.7
Fiscal 2019	0.5
Fiscal 2020	0.5
Fiscal 2021	0.5
Thereafter	2.7
Total	$	5.6

Concentration of Suppliers

The Company purchases certain components of its products from a single or small number of suppliers. A change in or loss of these suppliers could cause a delay in filling customer orders and a possible loss of sales, which could adversely affect results of operations; however, management believes that suitable replacement suppliers could be obtained in such an event.

Operating Leases

The Company conducts its operations in leased facilities under operating lease agreements that expire through fiscal 2035. Substantially all of the Company’s lease agreements require the Company to maintain the facilities during the term of the lease and to pay all taxes, insurance, utilities and other costs associated with those facilities. The Company makes customary representations and warranties and agrees to certain financial covenants and indemnities. In the event the Company defaults on a lease, typically the landlord may terminate the lease, accelerate payments and collect liquidated damages. As of September 24, 2016, the Company was not in default of any covenants contained in its lease agreements. Certain of the Company’s lease agreements provide for renewal options. Such renewal options are at rates similar to the current rates under the agreements.

Future minimum lease payments under all of the Company’s operating leases at September 24, 2016 are as follows:

Fiscal 2017	$	17.3
Fiscal 2018	15.5
Fiscal 2019	10.5
Fiscal 2020	8.3
Fiscal 2021	6.6
Thereafter	14.3
Total	$	72.5

Rent expense, net of sublease income from these locations, was $17.9 million, $19.2 million, and $21.1 million for fiscal 2016, 2015 and 2014, respectively.

The Company subleases a portion of a building it owns and some of its facilities and has received aggregate rental income of $2.4 million, $2.0 million and $1.8 million in fiscal 2016, 2015 and 2014, respectively, which has been recorded as an offset to rent expense. The future minimum annual rental income payments under these sublease agreements at September 24, 2016 are as follows:

Fiscal 2017	$	2.3
Fiscal 2018	2.2
Fiscal 2019	2.1
Fiscal 2020	1.3
Fiscal 2021	0.3
Thereafter	0.9
Total	$	9.1

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Litigation and Related Matters

12 Months Ended

Sep. 24, 2016

Commitments and Contingencies Disclosure [Abstract]

Litigation and Related Matters

Litigation and Related Matters

On June 9, 2010, Smith & Nephew, Inc. ("Smith & Nephew") filed suit against Interlace, Inc., which the Company acquired on January 6, 2011, in the United States District Court for the District of Massachusetts. The complaint alleged that the Interlace MyoSure hysteroscopic tissue removal device infringed U.S. patent 7,226,459. On November 22, 2011, Smith & Nephew filed suit against the Company in the United States District Court for the District of Massachusetts. The complaint alleged that use of the MyoSure hysteroscopic tissue removal system infringed U.S. patent 8,061,359. Both complaints sought permanent injunctive relief and unspecified damages. On September 4, 2012, following a two week trial, the jury returned a verdict of infringement of both the ‘459 and ‘359 patents and assessed damages of $4.0 million. A bench trial regarding the Company’s assertion of inequitable conduct on the part of Smith & Nephew with regard to the ‘359 patent was held on December 9, 2012 and oral arguments on the issue of inequitable conduct were presented on February 27, 2013. On June 27, 2013, the Court denied the Company’s motions related to inequitable conduct and allowed Smith & Nephew’s request for injunction, but ordered that enforcement of the injunction be stayed until final resolution, including appeal, of the current re-examinations of both patents at the United States Patent and Trademark Office (“USPTO”). The Court also rejected the jury’s damage award and ordered the parties to identify a mechanism for resolving the damages issue. The Company intends to file post-trial motions seeking to reverse the jury’s verdict. The USPTO has issued final decisions that the claims of the ‘459 and the '359 patents asserted as part of the litigation are not patentable. Smith & Nephew has appealed these decisions to the U.S. Patent Trial and Appeal Board. On January 20, 2016, the U.S. Patent Trial and Appeal Board affirmed the USPTO decision holding the claims at issue in the ‘459 patent as invalid. Smith & Nephew has appealed this holding to the Court of Appeals for the Federal Circuit (CAFC). On September 22, 2016, oral arguments related to the ‘359 patent were held at the Patent Trial and Appeal Board (PTAB). On October 25, 2016 the PTAB reversed the USPTO decision related to the ‘359 patent. The Company intends to appeal the PTAB reversal decision. At this time, based on available information regarding this litigation, the Company is unable to reasonably assess the ultimate outcome of this case or determine an estimate, or a range of estimates, of potential losses.

In January 2012, Enzo filed suit against Gen-Probe in the United States District Court for the District of Delaware. The Gen-Probe complaint alleged that certain of Gen-Probe’s diagnostics products, including products that incorporate Gen-Probe’s patented hybridization protection assay technology, such as the Aptima Combo 2 and Aptima HPV assays, infringe Enzo’s U.S. patent 6,992,180. On March 6, 2012, Enzo Life Sciences, Inc. (“Enzo”) filed suit against the Company in the United States District Court for the District of Delaware. The complaint alleged that certain of the Company’s molecular diagnostics products, including without limitation products based on its proprietary Invader chemistry, such as Cervista HPV HR and Cervista HPV 16/18, infringe Enzo’s U.S. patent 6,992,180. The complaint seeks permanent injunctive relief and unspecified damages. On September 30, 2013, Enzo amended its list of accused products to include Prodesse, MilliPROBE, PACE and Procleix assays. The complaint seeks permanent injunctive relief and unspecified damages. Enzo has asserted the ‘180 patent claims against six other companies. The court issued a Markman order on July 7, 2015 construing the claims, and it is expected that summary judgment motions will be heard in the fall of 2016. At this time, based on available information regarding this litigation, the Company is unable to reasonably assess the ultimate outcome of this case or determine an estimate, or a range of estimates, of potential losses.

On March 27, 2015, Enzo filed an additional suit against the Company in the United States District Court for the District of Delaware, The complaint alleged that certain additional Company molecular diagnostic products, including, inter alia, the Procleix Parvo/HAV assays and coagulation products, including the Invader Factor II test and the Invader Factor V test, also infringe U.S. Patent 6,992,180. The complaint further alleged that certain of the Company’s molecular diagnostic products, including Hologic’s Progensa PCA3 products, all Aptima products and all Procleix products infringe Enzo’s U. S. Patent 7,064,197. On June 11, 2015, this matter was stayed pending the resolution of summary judgment motions in the 2012 case referenced above. On March 30, 2016, the Company filed a request for inter-parties review of the ‘179 patent at the USPTO. At this time, based on available information regarding this litigation, the Company is unable to reasonably assess the ultimate outcome of this case or determine an estimate, or a range of estimates, of potential losses

On October 3, 2016, Enzo filed an additional suit against the Company in the United States District Court for the District of Delaware, The complaint alleged that certain additional Company molecular diagnostic products, including, inter alia, the Progensa ® PCA3, Aptima® and Procleix® products infringe U.S. Patent 6,221,581. At this time, based on available information regarding this litigation, the Company is unable to reasonably assess the ultimate outcome of this case or determine an estimate, or a range of estimates, of potential losses.

The Company is a party to various other legal proceedings and claims arising out of the ordinary course of its business. The Company believes that except for those matters described above there are no other proceedings or claims pending against it of which the ultimate resolution would have a material adverse effect on its financial condition or results of operations. In all cases, at each reporting period, the Company evaluates whether or not a potential loss amount or a potential range of loss is probable and reasonably estimable under ASC 450, Contingencies. Legal costs are expensed as incurred.

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Grifols Collaboration Agreement

12 Months Ended

Sep. 24, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Grifols Collaboration Agreement

Grifols Collaboration Agreement

Under its collaboration agreement with Grifols, the Company manufactures blood screening products, while Grifols is responsible for marketing, sales and service of those products, which Grifols sells under its trademarks. The Company is entitled to recover 50% of its manufacturing costs incurred in connection with the collaboration and will receive a percentage of the blood screening assay revenue generated under the collaboration. The Company’s share of revenue from any assay it sells Grifols is currently 50% and will remain so through the remainder of the term of the collaboration. Grifols is obligated to purchase all of the quantities of assays specified on a 90-day demand forecast, due 90 days prior to the date Grifols intends to take delivery, and certain quantities specified on a rolling 12-month forecast.

The Company recognizes product revenue, and collaborative research and license revenue, which is included within services and other revenues, under this collaboration agreement. The Company recognized revenue of $235.4 million, $253.1 million and $223.3 million under this collaboration agreement in fiscal 2016, 2015, and 2014 respectively.

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Business Segments and Geographic Information

12 Months Ended

Sep. 24, 2016

Segment Reporting [Abstract]

Business Segments and Geographic Information

Business Segments and Geographic Information

The Company reports segment information in accordance with ASC 280, Segment Reporting. Operating segments are identified as components of an enterprise about which separate, discrete financial information is available for evaluation by the chief operating decision maker, or decision-making group, in making decisions about how to allocate resources and assess performance. The Company’s chief operating decision maker is its chief executive officer, and the Company’s reportable segments have been identified based on the types of products manufactured and the end markets to which the products are sold. Each reportable segment generates revenue from either the sale of medical equipment and related services and/or sale of disposable supplies, primarily used for diagnostic testing and surgical procedures. The Company has four reportable segments: Diagnostics, Breast Health, GYN Surgical and Skeletal Health. Certain reportable segments represent an aggregation of operating units within each segment. The Company measures and evaluates its reportable segments based on segment revenues and operating income adjusted to exclude the effect of non-cash charges, such as intangible asset amortization expense, intangible asset impairment charges, restructuring and divestiture charges, litigation charges, and other one-time or unusual items.

Identifiable assets for the four principal reportable segments consist of inventories, intangible assets, goodwill, and property, plant and equipment. The Company fully allocates depreciation expense to its four reportable segments. The Company has presented all other identifiable assets as corporate assets. There were no intersegment revenues. Segment information for fiscal 2016, 2015, and 2014 was as follows:

	Years ended
	September 24, 2016		September 26, 2015		September 27, 2014
Total revenues:
Diagnostics	$	1,236.9	$	1,211.8	$	1,186.8
Breast Health	1,112.8		1,063.4		944.7
GYN Surgical	393.1		335.8		307.9
Skeletal Health	89.9		94.0		91.3
	$	2,832.7	$	2,705.0	$	2,530.7
Operating income:
Diagnostics	$	126.0	$	109.5	$	48.7
Breast Health	350.5		296.3		187.6
GYN Surgical	69.1		38.6		30.3
Skeletal Health	3.0		10.7		13.1
	$	548.6	$	455.1	$	279.7
Depreciation and amortization:
Diagnostics	$	341.8	$	358.7	$	376.0
Breast Health	22.6		28.6		41.7
GYN Surgical	99.9		102.7		104.6
Skeletal Health	1.1		1.4		0.9
	$	465.4	$	491.4	$	523.2
Capital expenditures:
Diagnostics	$	53.5	$	55.6	$	52.2
Breast Health	10.6		12.8		10.0
GYN Surgical	17.7		9.5		8.0
Skeletal Health	0.4		0.4		0.4
Corporate	12.3		11.1		9.6
	$	94.5	$	89.4	$	80.2

	September 24, 2016		September 26, 2015		September 27, 2014
Identifiable assets:
Diagnostics	$	3,771.9	$	4,055.8	$	4,383.5
Breast Health	809.1		815.4		859.8
GYN Surgical	1,570.7		1,658.1		1,748.2
Skeletal Health	30.9		25.3		26.1
Corporate	1,134.4		1,087.9		1,351.1
	$	7,317.0	$	7,642.5	$	8,368.7

The Company operates in the following major geographic areas as noted in the below chart. Revenue data is based upon customer location. Other than the United States, no single country accounted for more than 10% of consolidated revenues. The Company’s sales in Europe are predominantly derived from France, the United Kingdom and Germany. The Company’s sales in Asia-Pacific are predominantly derived from China, Australia and Japan. The “All others” designation includes Canada, Latin America and the Middle East.

Revenues by geography as a percentage of total revenues were as follows:

	Years ended
	September 24, 2016		September 26, 2015		September 27, 2014
United States	78.9	%	76.0	%	75.1	%
Europe	10.2	%	11.8	%	13.3	%
Asia-Pacific	7.6	%	8.5	%	7.7	%
All others	3.3	%	3.7	%	3.9	%
	100.0	%	100.0	%	100.0	%

The Company’s property, plant and equipment, net are geographically located as follows:

	September 24, 2016		September 26, 2015		September 27, 2014
United States	$	370.7	$	369.1	$	366.8
Costa Rica	28.1		27.7		27.9
Europe	49.2		50.8		56.0
All other countries	12.2		9.5		11.2
	$	460.2	$	457.1	$	461.9

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Accrued Expenses and Other Long-Term Liabilities

12 Months Ended

Sep. 24, 2016

Payables and Accruals [Abstract]

Accrued Expenses and Other Long-Term Liabilities

Accrued Expenses and Other Long-Term Liabilities

Accrued expenses and other long-term liabilities consisted of the following:

	September 24, 2016		September 26, 2015
Accrued Expenses
Compensation and employee benefits	$	176.4	$	173.2
Interest	11.7		14.6
Income and other taxes	38.4		13.3
Other	61.1		71.0
	$	287.6	$	272.1

	September 24, 2016		September 26, 2015
Other Long-Term Liabilities
Reserve for income tax uncertainties	$	167.6	$	145.1
Accrued lease obligation—long-term	34.8		34.0
Pension liabilities	11.2		10.1
Other	10.9		11.7
	$	224.5	$	200.9

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Pension and Other Employee Benefits

12 Months Ended

Sep. 24, 2016

Compensation and Retirement Disclosure [Abstract]

Pension and Other Employee Benefits

Pension and Other Employee Benefits

The Company has certain defined benefit pension plans covering the employees of its Hitec Imaging German subsidiary (the “Pension Benefits”). As of September 24, 2016 and September 26, 2015, the Company’s pension liability was $11.0 million and $10.0 million, respectively, which is primarily recorded as a component of long-term liabilities in the Consolidated Balance Sheets. Under German law, there are no rules governing investment or statutory supervision of the pension plan. As such, there is no minimum funding requirement imposed on employers. Pension benefits are safeguarded by the Pension Guaranty Fund, a form of compulsory reinsurance that guarantees an employee will receive vested pension benefits in the event of insolvency. The pension plans were closed on December 31, 1997 and only eligible employees at that date could participate in the plans prior to closing to new participants.

The tables below provide a reconciliation of benefit obligations, plan assets, funded status, and related actuarial assumptions of the Company’s German Pension Benefits.

Change in Benefit Obligation	Years ended
	September 24, 2016			September 26, 2015			September 27, 2014
Benefit obligation at beginning of year	$	(10.0	)	$	(10.3	)	$	(10.1	)
Service cost	—			—			—
Interest cost	(0.2		)	(0.3		)	(0.3		)
Plan participants’ contributions	—			—			—
Actuarial loss	(1.2		)	(0.9		)	(0.8		)
Foreign exchange gain	0.1			1.2			0.6
Benefits paid	0.3			0.3			0.3
Benefit obligation at end of year	(11.0		)	(10.0		)	(10.3		)
Plan assets	—			—			—
Benefit obligation at end of year	$	(11.0	)	$	(10.0	)	$	(10.3	)

The tables below outline the components of the net periodic benefit cost and related actuarial assumptions of the Company’s German Pension Benefits.

Components of Net Periodic Benefit Cost	Years ended
	September 24, 2016			September 26, 2015		September 27, 2014
Service cost	$	—		$	—	$	—
Interest cost	0.4			0.3		0.3
Expected return on plan assets	—			—		—
Amortization of prior service cost	—			—		—
Recognized net actuarial gain	(0.2		)	—		—
Net periodic benefit cost	$	0.2		$	0.3	$	0.3

Weighted-Average Net Periodic Benefit Cost Assumptions	2016		2015		2014
Discount rate	1.30	%	2.05	%	2.95	%
Expected return on plan assets	—	%	—	%	—	%
Rate of compensation increase	—	%	—	%	—	%

The projected benefit obligation for the German Pension Benefits with projected benefit obligations in excess of plan assets was $11.0 million and $10.0 million at September 24, 2016 and September 26, 2015, respectively, and the accumulated benefit obligation for the German Pension Benefits was $11.0 million and $10.0 million at September 24, 2016 and September 26, 2015, respectively.

The Company is also obligated to pay long-term service award benefits under the German Pension Benefits. The projected benefit obligation for long-term service awards was $0.1 million at both September 24, 2016 and September 26, 2015, respectively.

The table below reflects the total Pension Benefits expected to be paid for the German Pension Benefits each fiscal year as of September 24, 2016:

2017	$	0.3
2018	$	0.3
2019	$	0.4
2020	$	0.4
2021	$	0.4
2022 to 2026	$	2.0

The Company also maintains additional contractual pension benefits for its top German executive officers in the form of a defined contribution plan. These contributions were insignificant in fiscal 2016, 2015 and 2014. Additionally, the Company has Swiss pension plans, which were insignificant in fiscal 2016, 2015, and 2014.

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Quarterly Statement of Operations Information (Unaudited)

12 Months Ended

Sep. 24, 2016

Quarterly Financial Information Disclosure [Abstract]

Quarterly Statement of Operations Information (Unaudited)

Quarterly Statement of Operations Information (Unaudited)

The following table presents a summary of quarterly results of operations for fiscal 2016 and 2015:

	2016
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Total revenue	$	695.2	$	693.3	$	717.4	$	726.8
Gross profit	379.1		385.0		393.1		406.1
Net income (1)	84.9		68.9		84.8		92.2
Diluted net income per common share	$	0.29	$	0.24	$	0.30	$	0.33

	2015
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Total revenue	$	652.8	$	655.5	$	693.9	$	702.8
Gross profit	338.6		336.0		378.7		379.4
Net income (2)	29.2		47.8		29.4		25.2
Diluted net income per common share	$	0.10	$	0.17	$	0.10	$	0.09

(1) Net income in the first quarter of fiscal 2016 included restructuring charges of $2.3 million and a realized gain of $25.1 million related to the sale of all the shares in a marketable security investment. Net income in the second quarter of fiscal 2016 included restructuring charges of $3.8 million and a debt extinguishment loss of $4.5 million. Net income in the fourth quarter of fiscal 2016 included restructuring charges of $2.9 million, a debt extinguishment loss of $0.8 million, and an other-than-temporary impairment charge of $1.1 million related to a marketable security.

(2) Net income in the first quarter of fiscal 2015 included restructuring charges of $8.0 million and a debt extinguishment loss of $6.7 million. Net income in the third quarter of fiscal 2015 included restructuring and divestiture charges of $11.9 million and a debt extinguishment loss of $18.2 million. Net income in the fourth quarter of fiscal 2015 included restructuring and divestiture charges of $6.5 million, a debt extinguishment loss of $37.8 million, and an other-than-temporary impairment charge of $7.8 million related to a marketable security.

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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Sep. 24, 2016

Accounting Policies [Abstract]

Principles of Consolidation

Principles of Consolidation

The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. The Company’s fiscal year ends on the last Saturday in September. Fiscal 2016, 2015 and 2014 ended on September 24, 2016, September 26, 2015 and September 27, 2014, respectively.

Management's Estimates

Management’s Estimates and Uncertainties

The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("GAAP") requires management to make significant estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Significant estimates and assumptions by management affect the Company’s revenue recognition for multiple element arrangements, allowance for doubtful accounts, the net realizable value of inventory, estimated fair value of cost-method equity investments, valuations, purchase price allocations and contingent consideration related to business combinations, expected future cash flows including growth rates, discount rates, terminal values and other assumptions and estimates used to evaluate the recoverability of long-lived assets and goodwill, estimated fair values of intangible assets and goodwill, amortization methods and periods, warranty reserves, certain accrued expenses, restructuring and other related charges, stock-based compensation, contingent liabilities, tax reserves, deferred tax rates and recoverability of the Company’s net deferred tax assets and related valuation allowances.

Although the Company regularly assesses these estimates, actual results could differ materially from these estimates. Changes in estimates are recorded in the period in which they become known. The Company bases its estimates on historical experience and various other assumptions that it believes to be reasonable under the circumstances.

The Company is subject to a number of risks similar to those of other companies of similar size in its industry, including dependence on third-party reimbursements to support the markets of the Company’s products, early stage of development of certain products, rapid technological changes, recoverability of long-lived assets (including intangible assets and goodwill), competition, stability of world financial markets, ability to obtain regulatory approvals, changes in the regulatory environment, limited number of suppliers, customer concentration, integration of acquisitions, substantial indebtedness, government regulations, management of international activities, protection of proprietary rights, patent and other litigation, dependence on contract manufacturers and dependence on key individuals.

Cash Equivalents

Cash Equivalents

Cash equivalents are highly liquid investments with insignificant interest rate risk and maturities of three months or less at the time of acquisition.

Marketable Securities

Marketable Securities

The Company’s marketable securities as of September 24, 2016 are comprised of solely of equity securities and as of September 26, 2015 also included mutual funds. The equity securities are investments in the common stock of publicly traded companies, and the mutual funds were used to fund a portion of the Company's deferred compensation plan. The equity securities are classified as available-for-sale and are recorded at fair value with the unrealized gains or losses, net of tax, within accumulated other comprehensive income (loss), which is a component of stockholders’ equity. The mutual funds were classified as trading and recorded at fair value with unrealized gains and losses recorded in other income (expense), net in the Consolidated Statements of Income.

The Company periodically reviews its marketable equity securities classified as available-for-sale for other-than-temporary declines in fair value below carrying value, or whenever events or circumstances indicate that the carrying amount of an asset may not be recoverable. The determination that a decline is other-than-temporary is, in part, subjective and influenced by many factors. When assessing marketable equity securities for other-than-temporary declines in fair value, the Company considers factors including: the significance of the decline in value compared to the carrying value; the underlying factors contributing to a decline in the price of the security; how long the market value of the investment has been less than its carrying value; any market conditions that impact liquidity; the views of external investment analysts; the financial condition and near-term prospects of the investee; any news or financial information that has been released specific to the investee; and the outlook for the overall industry in which the investee operates. In the fourth quarters of fiscal 2016 and 2015, the Company concluded that the decline in fair value of one of its marketable securities was other-than-temporary based on the length of time the security's market value was significantly below its carrying value and recorded impairment charges of $1.1 million and $7.8 million, respectively.

The following reconciles cost basis to fair market value.

	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Other Than Temporary Impairment			Fair Value
As of September 24, 2016	$	2.4	$	—	$	(0.3	)	$	(1.1	)	$	1.0
As of September 26, 2015	$	16.1	$	7.2	$	(0.3	)	$	(7.8	)	$	15.2
As of September 27, 2014	$	15.5	$	10.2	$	(1.3	)	$	—		$	24.4

In the first quarter of fiscal 2016, the Company sold all of its shares in one of its marketable securities and recorded a realized gain of $25.1 million in Other income (expense), net.

Concentrations of Credit Risk

Concentrations of Credit Risk

Financial instruments that subject the Company to credit risk primarily consist of cash and cash equivalents, cost-method equity investments, and trade accounts receivable. The Company invests its cash and cash equivalents with high credit quality financial institutions.

The Company’s customers are principally located in the United States, Europe and Asia. The Company performs ongoing credit evaluations of the financial condition of its customers and generally does not require collateral. Although the Company is directly affected by the overall financial condition of the healthcare industry, as well as global economic conditions, management does not believe significant credit risk exists as of September 24, 2016. The Company generally has not experienced any material losses related to receivables from individual customers or groups of customers in the healthcare industry. The Company maintains an allowance for doubtful accounts based on accounts past due and historical collection experience.

There were no customers with balances greater than 10% of accounts receivable as of September 24, 2016 and September 26, 2015, or any customers that represented greater than 10% of consolidated revenues for fiscal years 2016, 2015 and 2014 (see Note 13).

Supplemental Cash Flow Statement Information

Supplemental Cash Flow Statement Information

	Years ended
	September 24, 2016		September 26, 2015		September 27, 2014
Cash paid during the period for income taxes	$	184.8	$	168.7	$	231.8
Cash paid during the period for interest	$	104.0	$	143.0	$	155.7

Inventories

Inventories

Inventories are valued at the lower of cost or market on a first in, first out basis. Work-in-process and finished goods inventories consist of materials, labor and manufacturing overhead. The valuation of inventory requires management to estimate excess and obsolete inventory. The Company employs a variety of methodologies to determine the net realizable value of its inventory. Provisions for excess and obsolete inventory are primarily based on management’s estimates of forecasted sales, usage levels and expiration dates, as applicable for disposable products. A significant change in the timing or level of demand for the Company’s products compared to forecasted amounts may result in recording additional charges for excess and obsolete inventory in the future. The Company records charges for excess and obsolete inventory within cost of product revenues.

Inventories consisted of the following:

	September 24, 2016		September 26, 2015
Raw materials	$	96.4	$	98.3
Work-in-process	51.7		58.7
Finished goods	126.6		126.1
	$	274.7	$	283.1

Property, Plant and Equipment

Property, Plant and Equipment

Property, plant and equipment is recorded at cost less allowances for depreciation. The straight-line method of depreciation is used for all property and equipment.

Property, plant and equipment consisted of the following:

	September 24, 2016			September 26, 2015
Equipment and software	$	381.9		$	365.9
Equipment under customer usage agreements	334.6			305.7
Buildings and improvements	186.1			182.1
Leasehold improvements	65.6			59.2
Land	51.9			51.4
Furniture and fixtures	18.4			17.3
	1,038.5			981.6
Less - accumulated depreciation and amortization	(578.3		)	(524.5		)
	$	460.2		$	457.1

Property, plant and equipment are depreciated over the following estimated useful lives:

Asset Classification	Estimated Useful Life
Building and improvements	35–40 years
Equipment and software	3–10 years
Equipment under customer usage agreements	3–8 years
Furniture and fixtures	5–7 years
Leasehold improvements	Shorter of the Original Term of Lease or Estimated Useful Life

Equipment under customer usage agreements primarily consists of diagnostic instrumentation and imaging equipment located at customer sites but owned by the Company. Generally, the customer has the right to use the equipment for a period of time provided they meet certain agreed to conditions. The Company recovers the cost of providing the equipment from the sale of disposables. The depreciation costs associated with equipment under customer usage agreements are charged to cost of product revenues over the estimated useful life of the equipment. The costs to maintain the equipment in the field are charged to cost of product revenue as incurred.

Long-Lived Assets

Long-Lived Assets

The Company reviews its long-lived assets, which includes property, plant and equipment and identifiable intangible assets (see below for discussion of intangible assets), for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable in accordance with ASC 360-10-35-15, Property, Plant and Equipment—Impairment or Disposal of Long-Lived Assets (ASC 360). Recoverability of these assets is evaluated by comparing the carrying value of the assets to the undiscounted cash flows estimated to be generated by those assets over their remaining economic life. If the undiscounted cash flows are not sufficient to recover the carrying value of the assets, the assets are considered impaired. The impairment loss is measured by comparing the fair value of the assets to their carrying value. Fair value is determined by either a quoted market price, if any, or a value determined by a discounted cash flow technique.

In the second quarter of fiscal 2014, the Company evaluated its MRI breast coils product line asset group, which was within its Breast Health segment, for impairment due to the Company’s expectation that it would be sold or disposed of significantly before the end of its previously estimated useful life. At this time, the undiscounted cash flows expected to be generated by this asset group over its estimated remaining useful life were not sufficient to recover its carrying value. The Company estimated the fair value of the asset group using market participant assumptions, which were based on underlying cash flow estimates, resulting in an impairment charge of $28.6 million. Pursuant to ASC 360 subtopic 10-35-28, the impairment charge was allocated to the long-lived assets with $27.1 million to intangible assets and $1.5 million to property and equipment. The property and equipment charge was recorded to cost of product revenues and general and administrative expenses in the amounts of $0.3 million and $1.2 million, respectively. The Company believes this adjustment falls within Level 3 of the fair value hierarchy. The Company completed the sale of this product line in the fourth quarter of fiscal 2014 (see Note 3).

In the first quarter of fiscal 2014, the Company recorded a $3.1 million impairment charge to record certain of its buildings at fair value related to the shutdown of its Hitec Imaging organic photoconductor manufacturing line (see Note 3).

Business Combinations and Acquisition of Intangible Assets

Business Combinations and Acquisition of Intangible Assets

The Company records tangible and intangible assets acquired in business combinations under the purchase method of accounting. The Company accounts for acquisitions in accordance with ASC 805, Business Combinations (ASC 805). Amounts paid for each acquisition are allocated to the assets acquired and liabilities assumed based on their fair values at the dates of acquisition. The Company allocates the purchase price in excess of the fair value of the net tangible assets acquired to identifiable intangible assets, including purchased research and development, based on detailed valuations that use certain information and assumptions provided by management. The Company allocates any excess purchase price over the fair value of the net tangible and intangible assets acquired to goodwill. The use of alternative valuation assumptions, including estimated cash flows and discount rates, and alternative useful life assumptions could result in different purchase price allocations and intangible asset amortization expense in current and future periods.

The Company uses the income approach to determine the fair value of developed technology and in-process research and development ("IPR&D") acquired in a business combination. This approach determines fair value by estimating the after-tax cash flows attributable to the respective asset over its useful life and then discounting these after-tax cash flows back to a present value. The Company bases its revenue assumptions on estimates of relevant market sizes, expected market growth rates, expected trends in technology and expected product introductions by competitors. Developed technology represents patented and unpatented technology and know-how. Regarding the value of the in-process projects, the Company considers, among other factors, the in-process projects’ stage of completion, the complexity of the work completed as of the acquisition date, the projected costs to complete, the contribution of core technologies and other acquired assets, the expected introduction date and the estimated useful life of the technology. The Company believes that the estimated developed technology and IPR&D amounts represent the fair value at the date of acquisition and do not exceed the amount a third-party would pay for the assets.

The Company also uses the income approach, as described above, to determine the estimated fair value of certain other identifiable intangible assets including customer relationships, trade names and business licenses. Customer relationships represent established relationships with customers, which provide a ready channel for the sale of additional products and services. Trade names represent acquired company and product names.

Intangible Assets and Goodwill

Intangible Assets and Goodwill

Intangible Assets

Intangible assets are initially recorded at fair value and stated net of accumulated amortization and impairments. The Company amortizes its intangible assets that have finite lives using either the straight-line method, or if reliably determinable, based on the pattern in which the economic benefit of the asset is expected to be utilized. Amortization is recorded over the estimated useful lives ranging from 2 to 30 years. The Company evaluates the realizability of its definite lived intangible assets whenever events or changes in circumstances or business conditions indicate that the carrying value of these assets may not be recoverable based on expectations of future undiscounted cash flows for each asset group. If the carrying value of an asset or asset group exceeds its undiscounted cash flows, the Company estimates the fair value of the assets, generally utilizing a discounted cash flow analysis based on the present value of estimated future cash flows to be generated by the assets using a risk-adjusted discount rate. To estimate the fair value of the assets, the Company uses market participant assumptions pursuant to ASC 820, Fair Value Measurements.

Indefinite lived intangible assets, such as IPR&D assets, are required to be tested for impairment annually, or more frequently if indicators of impairment are present. The Company’s annual impairment test date is as of the first day of its fourth quarter.

During the fourth quarter of fiscal 2014, the Company recorded impairment charges of $5.1 million for a reduction in fair value of its remaining IPR&D assets. The reduction in fair value was primarily due to lower revenue projections of the respective products compared to those estimated at the time of the Gen-Probe acquisition.

During the second quarter of fiscal 2014, the Company recorded impairment charges of $26.6 million and $0.5 million to developed technology and trade names, respectively, related to its MRI breast coils product line discussed above. In addition, the Company periodically re-evaluates the lives of its definite-lived intangible assets, and in the second quarter of fiscal 2014 shortened the life of certain corporate trade names, which were phased out.

Intangible assets consisted of the following:

	September 24, 2016				September 26, 2015
Description	Gross Carrying Value		Accumulated Amortization		Gross Carrying Value		Accumulated Amortization
Developed technology	$	3,983.7	$	1,991.6	$	3,979.1	$	1,698.5
In-process research and development	3.7		—		3.7		—
Customer relationships and contracts	1,098.9		546.2		1,101.1		467.5
Trade names	236.2		141.6		236.4		131.5
Business licenses	2.4		2.1		2.5		2.1
	$	5,324.9	$	2,681.5	$	5,322.8	$	2,299.6

In the third quarter of fiscal 2016, the Company accelerated the amortization of the Cystic Fibrosis developed technology asset of $6.2 million as a result of discontinuing this product line.

In the second quarter of fiscal 2016, the Company acquired certain intellectual property for $4.8 million, which was recorded in developed technology.

Amortization expense related to developed technology is classified as a component of cost of product revenues—amortization of intangible assets. Amortization expense related to customer relationships and contracts, trade names, and business licenses is classified as a component of amortization of intangible assets within operating expenses.

The estimated amortization expense at September 24, 2016 for each of the five succeeding fiscal years was as follows:

Fiscal 2017	$	365.8
Fiscal 2018	$	355.0
Fiscal 2019	$	343.1
Fiscal 2020	$	331.4
Fiscal 2021	$	312.0

Goodwill

In accordance with ASC 350, Intangibles—Goodwill and Other (ASC 350), the Company tests goodwill for impairment at the reporting unit level on an annual basis and between annual tests if events and circumstances indicate it is more likely than not that the fair value of a reporting unit is less than its carrying value. Events that could indicate impairment and trigger an interim impairment assessment include, but are not limited to, current economic and market conditions, including a decline in market capitalization, a significant adverse change in legal factors, business climate, operational performance of the business or key personnel, and an adverse action or assessment by a regulator.

In performing the impairment test, the Company utilizes the two-step approach prescribed under ASC 350. The first step requires a comparison of the carrying value of each reporting unit to its estimated fair value. To estimate the fair value of its reporting units for Step 1, the Company primarily utilizes the income approach. The income approach is based on a DCF analysis and calculates the fair value by estimating the after-tax cash flows attributable to a reporting unit and then discounting the after-tax cash flows to a present value using a risk-adjusted discount rate. Assumptions used in the DCF require significant judgment, including judgment about appropriate discount rates and terminal values, growth rates, and the amount and timing of expected future cash flows. The forecasted cash flows are based on the Company’s most recent budget and strategic plan and for years beyond this period, the Company’s estimates are based on assumed growth rates expected as of the measurement date. The Company believes its assumptions are consistent with the plans and estimates used to manage the underlying businesses. The discount rates used are intended to reflect the risks inherent in future cash flow projections and are based on estimates of the weighted-average cost of capital (“WACC”) of market participants relative to each respective reporting unit. The market approach considers comparable market data based on multiples of revenue or earnings before interest, taxes, depreciation and amortization (“EBITDA”) and is primarily used as a corroborative analysis to the results of the DCF analysis. The Company believes its assumptions used to determine the fair value of its reporting units are reasonable. If different assumptions were used, particularly with respect to forecasted cash flows, terminal values, WACCs, or market multiples, different estimates of fair value may result and there could be the potential that an impairment charge could result. Actual operating results and the related cash flows of the reporting units could differ from the estimated operating results and related cash flows.

If the carrying value of a reporting unit exceeds its estimated fair value, the Company is required to perform the second step of the goodwill impairment test to measure the amount of impairment loss, if any. The second step of the goodwill impairment test compares the implied fair value of a reporting unit’s goodwill to its carrying value. The implied fair value of goodwill is derived by performing a hypothetical purchase price allocation for each reporting unit as of the measurement date and allocating the reporting unit’s estimated fair value to its assets and liabilities. The residual amount from performing this allocation represents the implied fair value of goodwill. To the extent this amount is below the carrying value of goodwill, an impairment charge is recorded.

The Company conducted its fiscal 2016 impairment test on the first day of the fourth quarter, and as noted above used DCF and market approaches to estimate the fair value of its reporting units as of June 26, 2016, and ultimately used the fair value determined by the DCF approach in making its impairment test conclusions. The Company believes it used reasonable estimates and assumptions about future revenue, cost projections, cash flows, market multiples and discount rates as of the measurement date. As a result of completing Step 1, all of the Company's reporting units had fair values exceeding their carrying values, and as such, Step 2 of the impairment test was not required. For illustrative purposes, had the fair value of each of the reporting units that passed Step 1 been lower than 10%, all of the reporting units would still have passed Step 1 of the goodwill impairment test.

At September 24, 2016, the Company believes that each reporting unit, with goodwill aggregating $2.80 billion, was not at risk of failing Step 1 of the goodwill impairment test based on the current forecasts.

The Company conducted its fiscal 2015 and 2014 impairment tests on the first day of the respective year's fourth quarter, and as noted above used DCF and market approaches to estimate the fair value of its reporting units as of June 28, 2015 and June 29, 2014, respectively, and ultimately used the fair value determined by the DCF approach in making its impairment test conclusions. The Company believes it used reasonable estimates and assumptions about future revenue, cost projections, cash flows, market multiples and discount rates as of the measurement date. As a result of completing Step 1, all of the Company's reporting units had fair values exceeding their carrying values, and as such, Step 2 of the impairment test was not required.

A rollforward of goodwill activity by reportable segment from September 26, 2015 to September 24, 2016 is as follows:

	Diagnostics			Breast Health		GYN Surgical			Skeletal Health		Total
Balance at September 26, 2015	$	1,152.3		$	631.8	$	1,016.0		$	8.1	$	2,808.2
Tax adjustments	(1.3		)	—		—			—		(1.3		)
Foreign currency and other	(2.8		)	—		(1.0		)	—		(3.8		)
Balance at September 24, 2016	$	1,148.2		$	631.8	$	1,015.0		$	8.1	$	2,803.1

Other Assets

Other Assets

Other assets consisted of the following:

	September 24, 2016		September 26, 2015
Other Assets
Life insurance contracts	$	36.0	$	27.5
Manufacturing access fees	9.6		11.6
Derivative assets	0.4		6.2
Mutual funds	—		5.6
Marketable securities	1.0		15.2
Cost-method equity investments	3.5		4.2
Deferred tax assets	9.3		—
Other	23.9		17.9
	$	83.7	$	88.2

Life insurance contracts were purchased in connection with the Company’s Nonqualified Deferred Compensation Plan (“DCP”) and are recorded at their cash surrender value (see Note 9 for further discussion). The manufacturing access fees are related to a manufacturing supply and purchase agreement for our Aptima HPV products and are being amortized over the term of the agreement.

The Company’s cost-method equity investments are carried at cost as the Company owns less than 20% of the voting equity and does not have the ability to exercise significant influence over these companies. The Company regularly evaluates the carrying value of its cost-method equity investments for impairment and whether any events or circumstances are identified that would significantly harm the fair value of the investment. The primary indicators the Company utilizes to identify these events and circumstances are the investee’s ability to remain in business, such as the investee’s liquidity and rate of cash use, and the investee’s ability to secure additional funding and the investee valuation as determined by that additional funding. In the event a decline in fair value is judged to be other-than-temporary, the Company will record an other-than-temporary impairment charge in other income (expense), net in the Consolidated Statements of Operations. During fiscal 2014, the Company recorded other-than-temporary impairment charges of $6.9 million related to certain of its cost-method equity investments to adjust their carrying amounts to fair value. No such charges were recorded in fiscal 2016 or 2015 for cost-method equity investments.

Research and Software Development Costs

Research and Software Development Costs

Costs incurred for the research and development of the Company’s products are expensed as incurred. Nonrefundable advance payments for goods or services to be received in the future by the Company for use in research and development activities are deferred. The deferred costs are expensed as the related goods are delivered or the services are performed.

The Company accounts for the development costs of software embedded in the Company’s products in accordance with ASC 985, Software. Costs incurred in the research, design and development of software embedded in products to be sold to customers are charged to expense until technological feasibility of the ultimate product to be sold is established. The Company’s policy is that technological feasibility is achieved when a working model, with the key features and functions of the product, is available for customer testing. Software development costs incurred after the establishment of technological feasibility and until the product is available for general release are capitalized, provided recoverability is reasonably assured. Software development costs eligible for capitalization have not been significant to date.

Foreign Currency Translation

Foreign Currency Translation

The financial statements of the Company’s foreign subsidiaries are translated in accordance with ASC 830, Foreign Currency Matters. The reporting currency for the Company is the U.S. dollar. The functional currency of the Company’s foreign subsidiaries is determined based on the guidance in ASC 830. The majority of the Company's foreign subsidiaries' functional currency is the applicable local currency, although certain of the Company's foreign subsidiaries' functional currency is the U.S. dollar based on the nature of their operations or functions. Assets and liabilities of subsidiaries whose functional currency is the local currency are translated at the exchange rate in effect at each balance sheet date. Before translation, the Company re-measures foreign currency denominated assets and liabilities, including inter-company accounts receivable and payable, into the functional currency of the respective entity, resulting in unrealized gains or losses recorded in other income (expense), net in the Consolidated Statements of Income. Revenues and expenses are translated using average exchange rates during the respective period. Foreign currency translation adjustments are accumulated as a component of other comprehensive income (loss) as a separate component of stockholders’ equity. Gains and losses arising from transactions denominated in foreign currencies are included in other income (expense), net in the Consolidated Statements of Income and were not significant in any of the reporting periods presented.

Accumulated Other Comprehensive Income

Accumulated Other Comprehensive Income (Loss)

Other comprehensive income (loss) includes certain transactions that have generally been reported in the statement of stockholders’ equity. The following tables summarize the components and changes in accumulated balances of other comprehensive income for the periods presented:

	Year Ended September 24, 2016															Year Ended September 26, 2015
	Foreign Currency Translation			Marketable Securities			Pension Plans			Hedged Interest Rate Caps			Total			Foreign Currency Translation			Marketable Securities			Pension Plans			Hedged Interest Rate Caps			Total
Beginning Balance	$	(15.7	)	$	6.9		$	(1.8	)	$	(3.9	)	$	(14.5	)	$	(4.7	)	$	8.9		$	(1.6	)	$	—		$	2.6
Other comprehensive loss before reclassifications	(10.4		)	(1.1		)	(0.7		)	(3.4		)	(15.6		)	(20.6		)	(9.8		)	(0.2		)	(3.9		)	(34.5		)
(Gains) charges reclassified to statement of income	—			(6.1		)	—			3.9			(2.2		)	9.6			7.8			—			—			17.4
Ending Balance	$	(26.1	)	$	(0.3	)	$	(2.5	)	$	(3.4	)	$	(32.3	)	$	(15.7	)	$	6.9		$	(1.8	)	$	(3.9	)	$	(14.5	)

In the first quarter of fiscal 2016, the Company sold all of its shares in one of its marketable securities and recorded a realized gain of $25.1 million in other income (expense), net and resulted in reclassifying a $7.2 million gain out of other comprehensive income (loss) to other income (expense), net. In the fourth quarter of fiscal 2016, the Company recorded a $1.1 million other-than-temporary impairment charge and this amount was reclassified out of other comprehensive income (loss) to other income (expense), net.

During fiscal 2015, the Company reclassified $9.6 million out of accumulated other comprehensive income to restructuring and divestiture charges related to writing off the cumulative translation adjustment in connection with its substantial liquidation of the MRI breast coils product line (see Note 3). In addition, during fiscal 2015 the Company reclassified $7.8 million out of accumulated other comprehensive income to other (expense) income, net for the other-than-temporary impairment of a marketable security.

Derivatives, Policy

Derivatives

Interest Rate Cap - Cash Flow Hedge

The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company manages its exposure to some of its interest rate risk through the use of interest rate caps, which are derivative financial instruments. The Company does not use derivatives for speculative purposes. For a derivative that is designated as a cash flow hedge, changes in the fair value of the derivative are recognized in accumulated other comprehensive income ("AOCI") to the extent the derivative is effective at offsetting the changes in the cash flows being hedged until the hedged item affects earnings. To the extent there is any hedge ineffectiveness, changes in fair value relating to the ineffective portion are immediately recognized in earnings in other income (expense) in the Consolidated Statements of Income.

During fiscal 2015, the Company entered into separate interest rate cap agreements with multiple counter-parties to help mitigate the interest rate volatility associated with the variable rate interest on its credit facilities under its Prior Credit Agreement, which has been replaced by the new Credit Agreement (see Note 4). Interest rate cap agreements provide the right to receive cash if the reference interest rate rises above a contractual rate. The aggregate premium paid for the interest rate cap agreements was $13.2 million, which was the initial fair value of the instruments recorded in the Company's financial statements.

The critical terms of the interest rate caps were designed to mirror the terms of the Company’s LIBOR-based borrowings under the Prior Credit Agreement. The terms in the new Credit Agreement are consistent with the Prior Credit Agreement, and therefore the interest rate caps continue to be highly effective at offsetting the cash flows being hedged. The Company designated these derivatives as cash flow hedges of the variability of the LIBOR-based interest payments on $1.0 billion of principal over a three-year period, which ends on December 30, 2017.

As of September 24, 2016, the Company determined that the existence of hedge ineffectiveness, if any, was immaterial and all changes in the fair value of the interest rate caps were recorded in the Consolidated Statements of Comprehensive Income as a component of AOCI.

During fiscal 2016, $3.9 million was reclassified from AOCI to the Company's Consolidated Statements of Income related to the interest rate cap agreements. The Company expects to similarly reclassify approximately $6.9 million from AOCI to the Consolidated Statements of Income in the next twelve months.

The aggregate fair value of these interest rate caps was $1.4 million and $6.9 million at September 24, 2016 and September 26, 2015, respectively, and is included in both Prepaid expenses and other current assets and Other assets on the Company’s Consolidated Balance Sheet. Refer to Note 5 “Fair Value Measurements” below for related fair value disclosures.

Forward Foreign Currency Contracts

The Company enters into forward foreign currency exchange contracts to mitigate certain operational exposures from the impact of changes in foreign currency exchange rates. Such exposures result from the portion of the Company's operations that are denominated in currencies other than the U.S. dollar, primarily the Euro, the UK Pound, the Australian dollar, the Canadian dollar and the Japanese Yen. These foreign currency exchange contracts are entered into to support transactions made in the ordinary course of business and are not speculative in nature. The contracts are generally for periods of one year or less. During fiscal 2016, the Company began to execute forward foreign currency contracts in order to mitigate its exposure to fluctuations in various currencies against its reporting currency, the U.S. dollar. The Company did not elect hedge accounting for these forward foreign currency contracts; however, the Company may seek to apply hedge accounting in future scenarios. The change in the fair value of these contracts is recognized directly in earnings as a component of other income (expense), net. During fiscal 2016, the Company recorded a realized gain of $1.5 million from settling forward foreign currency contracts, and net unrealized losses of $1.1 million on outstanding contracts.

As of September 24, 2016, the Company had outstanding forward foreign currency contracts that were not designated for hedge accounting and are used to hedge fluctuations in the U.S dollar of forecasted transactions denominated in the Euro, UK Pound, Australian Dollar, Canadian Dollar and Japanese Yen with a notional amount of $165.0 million.

Financial Instrument Presentation

The table below presents the fair value of the Company's derivative financial instruments as well as their classification on the balance sheet as of September 24, 2016:

	Balance Sheet Location	September 24, 2016		September 26, 2015
Assets:
Derivative instruments designated as a cash flow hedge:
Interest rate cap agreements	Prepaid expenses and other current assets	$	1.0	$	0.7
Interest rate cap agreements	Other Assets	0.4		6.2
		$	1.4	$	6.9
Derivatives not designated as hedging instruments:
Forward foreign currency contracts	Prepaid expenses and other current assets	$	0.2	$	—
Liabilities:
Derivatives not designated as hedging instruments:
Forward foreign currency contracts	Accrued expenses	$	1.3	$	—

The following table presents the unrealized loss recognized in AOCI related to the interest rate caps for the following reporting periods:

	Year Ended September 24, 2016			Year Ended September 26, 2015
Amount of loss recognized in other comprehensive income, net of taxes:
Interest rate cap agreements	$	(3.4	)	$	(3.9	)

The following table presents the adjustment to fair value (realized and unrealized) recorded within the Consolidated Statements of Income for derivative instruments for which the Company did not elect hedge accounting:

Derivatives not classified as hedging instruments			Location of Gain (Loss) Recognized in Income
	Year Ended September 24, 2016
Forward foreign currency contracts	$	0.4	Other income (expense), net

Revenue Recognition

Revenue Recognition

The Company generates revenue from the sale of its products, primarily medical imaging systems and diagnostic and surgical disposable products, and related services, which are primarily support and maintenance services on its medical imaging systems.

The Company recognizes product revenue upon shipment provided that there is persuasive evidence of an arrangement, there are no uncertainties regarding acceptance, the sales price is fixed or determinable, and collection of the resulting receivable is reasonably assured. Generally, the Company’s product arrangements for capital equipment sales, primarily in its Breast Health and Skeletal Health reporting segments, are multiple-element arrangements, including services, such as installation, training and support and maintenance, and multiple products. Based on the terms and conditions of the product arrangements, the Company believes that these services and undelivered products can be accounted for separately from the delivered product element as the Company’s delivered products have value to its customers on a stand-alone basis. Accordingly, revenue for services not yet performed at the time of product delivery are deferred and recognized as such services are performed. The relative selling price of any undelivered products is also deferred at the time of shipment and recognized as revenue when these products are delivered. There is no customer right of return in the Company’s sales agreements for its capital equipment.

Service revenues primarily consist of amounts recorded under service and maintenance contracts and repairs not covered under warranty, installation and training, and shipping and handling costs billed to customers. Service and maintenance contract revenues are recognized ratably over the term of the contract. Other service revenues are recognized as the services are performed.

For revenue arrangements with multiple deliverables, the Company records revenue as separate units of accounting if the delivered items have value to the customer on a stand-alone basis, and if the arrangement includes a general right of return relative to the delivered items, the delivery or performance of the undelivered items is considered probable and substantially within the Company’s control. Some of the Company’s products have both software and non-software components that function together to deliver the product’s essential functionality. The Company determined that except for its computer-aided detection (“CAD”) products and C-View product, the software element in its other products is incidental and not within the scope of the software revenue recognition rules, ASC 985-605, Software—Revenue Recognition. The Company determined that given the significance of the software component’s functionality to its CAD and C-View systems, which are sold by its Breast Health segment, these products are within the scope of the software revenue recognition rules. The Company evaluated the appropriate revenue recognition treatment of its other hardware products, including its Dimensions digital mammography systems, which have both software and non-software components that function together to deliver the products’ essential functionality (i.e., it is a tangible product), and determined they are not within the scope of ASC 985-605.

The Company is required to allocate revenue to its multiple element arrangements based on the relative fair value of each element’s selling price. The Company typically determines the selling price of its products based on its best estimate of selling prices (“ESP”) and services based on vendor-specific objective evidence of selling price (“VSOE”). The Company determines VSOE based on its normal pricing and discounting practices for the specific product or service when sold on a stand-alone basis. In determining VSOE, the Company’s policy requires a substantial majority of selling prices for a product or service to be within a reasonably narrow range. The Company also considers the class of customer, method of distribution, and the geographies into which its products and services are sold when determining VSOE. If VSOE cannot be established, which may occur in instances when a product or service has not been sold separately, stand-alone sales are too infrequent, or product pricing is not within a relatively narrow range, the Company will generally establish the selling price using ESP to allocate arrangement consideration. The objective of ESP is to determine the price at which the Company would typically transact a stand-alone sale of the product or service. ESP is determined by considering a number of factors including Company pricing policies, internal costs and gross margin objectives, method of distribution, information gathered from experience in customer negotiations, market research and information, recent technological trends, competitive landscape and geographies.

For those arrangements accounted for under the software revenue recognition rules, ASC 985-605 generally requires revenue earned on software arrangements involving multiple elements to be allocated to each element based on their relative VSOE of fair value. If VSOE does not exist for a delivered element, the residual method is applied in which the arrangement consideration is allocated to the undelivered elements based on their VSOE with the remaining consideration recognized as revenue for the delivered elements. For multiple-element software arrangements where VSOE of fair value of Post-Contract Customer Support (“PCS”) has been established, the Company recognizes revenue using the residual method at the time all other revenue recognition criteria have been met.

Within its Diagnostics segment, the Company manufactures blood screening products according to demand schedules provided by its collaboration partner, Grifols, S.A. (“Grifols”). The Company’s agreement provides that it shares a portion of Grifols’s revenue from screening blood donations. Upon shipment to Grifols, the Company recognizes product revenue at an agreed upon fixed transfer price, which is not refundable, and records the related cost of products sold. Based on the terms of the Company’s collaboration agreement with Grifols, the Company’s ultimate share of the net revenue from sales to the end user in excess of the transfer price is not known until it is reported to the Company by Grifols. On a monthly basis, Grifols reports net revenue generated during the prior month and remits an additional corresponding net payment to the Company, which is recorded as revenue at that time. This payment combined with the transfer price revenues previously recognized represents the Company’s ultimate share of net revenue under the agreement.

While the majority of its instruments are placed at customer sites, in certain instances the Company sells instruments to its clinical diagnostics customers and records sales of these instruments upon shipment or delivery, depending on the terms of the arrangement.

Within its Diagnostics business, and to a lesser extent, its GYN Surgical business, the Company provides its instrumentation (for example, the ThinPrep Processor, ThinPrep Imaging System, and the Panther and Tigris systems) and certain other hardware to customers without requiring them to purchase the equipment or enter into a lease. The Company installs the instrumentation or equipment at the customer’s site and recovers the cost of providing the instrumentation or equipment in the amount it charges for its diagnostic tests, assays and other disposables. Customers enter into a customer usage agreement and typically commit to purchasing minimum quantities of disposable products at a stated price over a defined contract term, which is typically between three and five years. Revenue is recognized over the term of the customer usage agreement as tests, assays and other disposable products are shipped or delivered, depending on the customer's arrangement.

Accounts Receivable and Reserves

Accounts Receivable and Reserves

The Company records reserves for doubtful accounts based upon a specific review of all outstanding invoices, known collection issues and historical experience. The Company regularly evaluates the collectability of its trade accounts receivables and performs ongoing credit evaluations of its customers and adjusts credit limits based upon payment history and its assessment of the customer’s current credit worthiness.

Accounts receivable reserve activity for fiscal 2016, 2015 and 2014 was as follows:

	Balance at Beginning of Period		Charged to Costs and Expenses		Write- offs and Payments			Balance at End of Period
Period Ended:
September 24, 2016	$	11.1	$	2.0	$	(0.4	)	$	12.7
September 26, 2015	$	12.0	$	1.6	$	(2.5	)	$	11.1
September 27, 2014	$	8.8	$	4.4	$	(1.2	)	$	12.0

Cost of Service and Other Revenues

Cost of Service and Other Revenues

Cost of service and other revenues primarily represents payroll and related costs associated with the Company’s professional services’ employees, consultants, infrastructure costs and overhead allocations, including depreciation, rent and materials consumed in providing the service.

Stock-Based Compensation

Stock-Based Compensation

The Company accounts for share-based payments in accordance with ASC 718, Stock Compensation (ASC 718). As such, all share-based payments to employees, including grants of stock options, restricted stock units, performance stock units and market stock units and shares issued under the Company’s employee stock purchase plan, are recognized in the Consolidated Statements of Operations based on their fair values on the date of grant.

Net Income (Loss) Per Share

Net Income Per Share

Basic net income per share is computed by dividing net income by the weighted average number of common shares outstanding. Diluted net income per share is computed by dividing net income by the weighted average number of common shares and the dilutive effect of potential future issuances of common stock from outstanding stock options, restricted stock units and convertible debt determined by applying the treasury stock method. In accordance with ASC 718, the assumed proceeds under the treasury stock method include the average unrecognized compensation expense of in-the-money stock options and restricted stock units. This results in the assumed buyback of additional shares, thereby reducing the dilutive impact of equity awards.

The Company applies the provisions of ASC 260, Earnings Per Share, Subsection 10-45-44, to determine the diluted weighted average shares outstanding as it relates to its convertible notes, and due to the type of debt instrument issued and its accounting policy, the Company applies the treasury stock method and not the if-converted method. The dilutive impact of the Company’s convertible notes is based on the difference between the Company’s current period average stock price and the conversion price of the convertible notes, provided there is a premium. As such, dilution related to the conversion premium on the 2010 Notes, 2012 Notes and 2013 Notes is included in the calculation of diluted weighted-average shares outstanding in fiscal 2016 and 2015 to the extent each issuance is dilutive based on the average stock price during each reporting period being greater than the conversion price of the respective Notes. In fiscal 2014, only the dilution of the conversion premium on the 2010 Notes is included in diluted weighted-average shares outstanding.

A reconciliation of basic and diluted share amounts for fiscal 2016, 2015, and 2014 was as follows:

	September 24, 2016	September 26, 2015	September 27, 2014
Basic weighted average common shares outstanding	280,213	280,566	275,499
Weighted average common stock equivalents from assumed exercise of stock options and restricted stock units	2,631	2,898	2,368
Incremental shares from Convertible Notes premium	3,312	6,073	493
Diluted weighted average common shares outstanding	286,156	289,537	278,360
Weighted-average anti-dilutive shares related to:
Outstanding stock options	1,029	1,502	5,033
Restricted stock units	62	49	20

In those reporting periods in which the Company has reported net income, anti-dilutive shares generally are comprised of those stock options that either have an exercise price above the average stock price for the period or the stock options’ combined exercise price, average unrecognized stock compensation expense and assumed tax benefits upon exercise is greater than the average stock price for the period.

Product Warranties

Product Warranties

The Company generally offers a one-year warranty for its products. The Company provides for the estimated cost of product warranties at the time product revenue is recognized. Factors that affect the Company’s warranty reserves include the number of units sold, historical and anticipated rates of warranty repairs and the cost per repair. The Company periodically assesses the adequacy of the warranty reserve and adjusts the amount as necessary.

Product warranty activity for fiscal 2016 and 2015 was as follows:

	Balance at Beginning of Period		Provisions		Settlements/ Adjustments			Balance at End of Period
Period ended:
September 24, 2016	$	5.4	$	7.1	$	(7.5	)	$	5.0
September 26, 2015	$	6.3	$	6.1	$	(7.0	)	$	5.4

Advertising Costs

Advertising Costs

Advertising costs are charged to operations as incurred. The Company does not have any direct-response advertising. Advertising costs, which include trade shows and conventions, were approximately $20.2 million, $14.4 million and $14.1 million for fiscal 2016, 2015 and 2014, respectively, and were included in selling and marketing expense in the Consolidated Statements of Income.

Recently Adopted Accounting Pronouncements

Recently Adopted Accounting Pronouncements

On September 27, 2015, the Company early adopted FASB ASU No. 2015-17, Balance Sheet Classification of Deferred Taxes, which simplifies the presentation of deferred income taxes by eliminating the requirement for entities to separate deferred income tax liabilities and assets into current and noncurrent amounts in the balance sheet. Rather, it requires deferred tax assets and liabilities to be classified as noncurrent in the balance sheet. The Company adopted this standard prospectively in the first quarter of fiscal 2016, and prior periods were not retrospectively adjusted.

On June 26, 2016, the Company retrospectively adopted FASB ASU 2015-13, Presentation of Debt Issuance Costs, which simplifies the presentation of debt issuance costs and requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from that debt liability consistent with the presentation of a debt discount and not recorded as separate assets. The Company adopted this standard in the fourth quarter of fiscal 2016, and the fiscal 2015 balance sheet was retrospectively recast. In fiscal 2015, the Company had $0.6 million related to current debt issuance costs recorded in prepaid expenses and other current assets and $27.0 million related to non-current debt issuance costs recorded in other assets. The adoption of this standard resulted in these amounts being reclassified as liabilities, reducing both the current portion of long-term debt and long-term debt, net of current portion at the end of fiscal 2015 by $27.6 million in total and a corresponding reduction to the aforementioned asset accounts. Debt issuance costs will no longer be recorded as an asset.

Recently Issued Accounting Pronouncements

Recently Issued Accounting Pronouncements

In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740). The guidance requires companies to recognize the income tax effects of intercompany sales and transfers of assets, other than inventory, in the income statement as income tax expense (or benefit) in the period in which the transfer occurs. The guidance is effective for annual periods beginning after December 15, 2017, and is applicable to the Company in fiscal 2019. Early adoption is permitted as of the beginning of an annual reporting period. The Company is currently evaluating the impact of the adoption of ASU 2016-16 on its consolidated financial position and results of operations.

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flow (Topic 230). The guidance reduces diversity in how certain cash receipts and cash payments are presented and classified in the Statements of Cash Flows. Certain of ASU 2016-15 requirements are as follows: 1) cash payments for debt prepayment or debt extinguishment costs should be classified as cash outflows for financing activities, 2) contingent consideration payments made soon after a business combination should be classified as cash outflows for investing activities and cash payment made thereafter should be classified as cash outflows for financing up to the amount of the contingent consideration liability recognized at the acquisition date with any excess classified as operating activities, 3) cash proceeds from the settlement of insurance claims should be classified on the basis of the nature of the loss, 4) cash proceeds from the settlement of Corporate-Owned Life Insurance (COLI) Policies should be classified as cash inflows from investing activities and cash payments for premiums on COLI policies may be classified as cash outflows for investing activities, operating activities, or a combination of investing and operating activities, and 5) cash paid to a tax authority by an employer when withholding shares from an employee's award for tax-withholding purposes should be classified as cash outflows for financing activities. The guidance is effective for annual periods beginning after December 15, 2017, and is applicable to the Company in fiscal 2019. Early adoption is permitted. The adoption of ASU 2016-15 is not expected to have a material effect on the Company's consolidated financial statements.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326). The guidance requires that financial assets measured at amortized cost be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis. The income statement reflects the measurement of credit losses for newly recognized financial assets, as well as the expected credit losses during the period. The measurement of expected credit losses is based upon historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. Credit losses relating to available-for-sale debt securities will be recorded through an allowance for credit losses rather than as a direct write-down to the security. The updated guidance is effective for annual periods beginning after December 15, 2019, and is applicable to the Company in fiscal 2021. Early adoption is permitted. The Company is currently evaluating the impact of the adoption of ASU 2016-13 on its consolidated financial position and results of operations.

In March 2016, the FASB issued ASU No. 2016-09, Compensation - Stock Compensation (Topic 718). The guidance changes how companies account for certain aspects of share-based payments to employees. Entities will be required to recognize income tax effects of awards in the income statement when the awards vest or are settled. The guidance also allows an employer to repurchase more of an employee's shares than it can today for tax withholding purposes by providing for withholding at the employee's maximum rate as opposed to the minimum rate without triggering liability accounting and by allowing an entity-wide policy election to account for forfeitures as they occur. The updated guidance is effective for annual periods beginning after December 15, 2016, and is applicable to the Company in fiscal 2018. Early adoption is permitted. The adoption of ASU 2016-09 is not expected to have a material effect on the Company's consolidated financial position and results of operations, although the income tax affect from vesting of stock units and option exercises could be significant to quarterly results of operations.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). The guidance requires an entity to recognize a right-of-use asset and a lease liability for virtually all of its leases with terms of more than 12 months. Recognition, measurement and presentation of expenses will depend on classification as a finance or operating lease. The amendments also require certain quantitative and qualitative disclosures about leasing arrangements. The guidance is effective for annual periods beginning after December 15, 2018, and is applicable to the Company in fiscal 2020. Early adoption is permitted. The updated guidance requires a modified retrospective adoption. The Company is currently evaluating the impact of the adoption of ASU 2016-02 on its consolidated financial position and results of operations.

In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. This guidance changes how entities measure equity investments that do not result in consolidation and are not accounted for under the equity method. Entities will be required to measure these investments at fair value at the end of each reporting period and recognize changes in fair value in net income. A practicability exception will be available for equity investments that do not have readily determinable fair values, however; the exception requires the Company to consider relevant transactions that can be reasonably known to identify any observable price changes that would impact the fair value. This guidance also changes certain disclosure requirements and other aspects of current US GAAP. This guidance is effective for annual periods beginning after December 15, 2017, and is applicable to the Company in fiscal 2019. Early adoption is permitted. The Company is currently evaluating the impact of the adoption of ASU 2016-01 on its consolidated financial position and results of operations.

In July 2015, the Financial Accounting Standards Board (FASB) issued guidance under ASC 330, Simplifying the Measurement of Inventory. The new guidance requires inventory to be measured at the lower of cost and net realizable value, which is defined as the estimated selling price in the ordinary course of business less reasonably predictable costs of completion, disposal and transportation. This new guidance is effective for the Company's first quarter of fiscal 2018 and early adoption is permitted. The guidance must be applied prospectively. The Company is currently evaluating the impact of the adoption of this requirement on its consolidated financial statements but does not anticipate that adoption of this guidance will have a material impact on its consolidated financial statements.

In February 2015, the FASB issued ASU No. 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis. This guidance focuses on a reporting company’s consolidation evaluation to determine whether certain legal entities should be consolidated. This guidance is effective for annual periods beginning after December 15, 2015, and is applicable to the Company in fiscal 2017. Early adoption is permitted, including adoption in an interim period. The Company is currently evaluating this guidance, but does not anticipate that adoption of this guidance will have a material impact on its consolidated financial statements.

In August 2014, the FASB issued ASU No. 2014-15, Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern. ASU 2014-15 requires management to evaluate, at each annual or interim reporting period, whether there are conditions or events that exist that raise substantial doubt about an entity's ability to continue as a going concern within one year after the date the financial statements are issued and provide related disclosures. ASU 2014-15 is effective for annual periods ending after December 15, 2016 and is applicable to us in fiscal 2018. Earlier application is permitted. The adoption of ASU 2014-15 is not expected to have a material effect on the Company's consolidated financial statements or disclosures.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 660), which provides guidance for revenue recognition. This ASU is applicable to any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets. ASU 2014-09 will supersede the revenue recognition requirements in Topic 605, Revenue Recognition, and most industry-specific guidance. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled to receive in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under current U.S. GAAP. These judgments may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. On July 9, 2015, the FASB voted in favor of delaying the effective date of the new standard by one year, with early adoption permitted as of the original effective date. ASU 2014-09 is effective prospectively for fiscal years, and interim reporting periods within those years, beginning after December 15, 2017, which is fiscal 2019 for the Company. The Company is currently evaluating the impact of the adoption of ASU 2014-09 on its consolidated financial position and results of operations.

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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 24, 2016

Accounting Policies [Abstract]

Summary of Marketable Securities

The following reconciles cost basis to fair market value.

	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Other Than Temporary Impairment			Fair Value
As of September 24, 2016	$	2.4	$	—	$	(0.3	)	$	(1.1	)	$	1.0
As of September 26, 2015	$	16.1	$	7.2	$	(0.3	)	$	(7.8	)	$	15.2
As of September 27, 2014	$	15.5	$	10.2	$	(1.3	)	$	—		$	24.4

Supplemental Cash Flow Statement Information

Supplemental Cash Flow Statement Information

	Years ended
	September 24, 2016		September 26, 2015		September 27, 2014
Cash paid during the period for income taxes	$	184.8	$	168.7	$	231.8
Cash paid during the period for interest	$	104.0	$	143.0	$	155.7

Schedule of Inventories

Inventories consisted of the following:

	September 24, 2016		September 26, 2015
Raw materials	$	96.4	$	98.3
Work-in-process	51.7		58.7
Finished goods	126.6		126.1
	$	274.7	$	283.1

Schedule of Property, Plant and Equipment

Property, plant and equipment consisted of the following:

	September 24, 2016			September 26, 2015
Equipment and software	$	381.9		$	365.9
Equipment under customer usage agreements	334.6			305.7
Buildings and improvements	186.1			182.1
Leasehold improvements	65.6			59.2
Land	51.9			51.4
Furniture and fixtures	18.4			17.3
	1,038.5			981.6
Less - accumulated depreciation and amortization	(578.3		)	(524.5		)
	$	460.2		$	457.1

Property, plant and equipment are depreciated over the following estimated useful lives:

Asset Classification	Estimated Useful Life
Building and improvements	35–40 years
Equipment and software	3–10 years
Equipment under customer usage agreements	3–8 years
Furniture and fixtures	5–7 years
Leasehold improvements	Shorter of the Original Term of Lease or Estimated Useful Life

Schedule of Intangible Assets

Intangible assets consisted of the following:

	September 24, 2016				September 26, 2015
Description	Gross Carrying Value		Accumulated Amortization		Gross Carrying Value		Accumulated Amortization
Developed technology	$	3,983.7	$	1,991.6	$	3,979.1	$	1,698.5
In-process research and development	3.7		—		3.7		—
Customer relationships and contracts	1,098.9		546.2		1,101.1		467.5
Trade names	236.2		141.6		236.4		131.5
Business licenses	2.4		2.1		2.5		2.1
	$	5,324.9	$	2,681.5	$	5,322.8	$	2,299.6

Schedule of Estimated Amortization Expense

The estimated amortization expense at September 24, 2016 for each of the five succeeding fiscal years was as follows:

Fiscal 2017	$	365.8
Fiscal 2018	$	355.0
Fiscal 2019	$	343.1
Fiscal 2020	$	331.4
Fiscal 2021	$	312.0

Rollforward of Goodwill Activity by Reportable Segment

A rollforward of goodwill activity by reportable segment from September 26, 2015 to September 24, 2016 is as follows:

	Diagnostics			Breast Health		GYN Surgical			Skeletal Health		Total
Balance at September 26, 2015	$	1,152.3		$	631.8	$	1,016.0		$	8.1	$	2,808.2
Tax adjustments	(1.3		)	—		—			—		(1.3		)
Foreign currency and other	(2.8		)	—		(1.0		)	—		(3.8		)
Balance at September 24, 2016	$	1,148.2		$	631.8	$	1,015.0		$	8.1	$	2,803.1

Schedule of Other Assets

Other assets consisted of the following:

	September 24, 2016		September 26, 2015
Other Assets
Life insurance contracts	$	36.0	$	27.5
Manufacturing access fees	9.6		11.6
Derivative assets	0.4		6.2
Mutual funds	—		5.6
Marketable securities	1.0		15.2
Cost-method equity investments	3.5		4.2
Deferred tax assets	9.3		—
Other	23.9		17.9
	$	83.7	$	88.2

Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]

The following tables summarize the components and changes in accumulated balances of other comprehensive income for the periods presented:

	Year Ended September 24, 2016															Year Ended September 26, 2015
	Foreign Currency Translation			Marketable Securities			Pension Plans			Hedged Interest Rate Caps			Total			Foreign Currency Translation			Marketable Securities			Pension Plans			Hedged Interest Rate Caps			Total
Beginning Balance	$	(15.7	)	$	6.9		$	(1.8	)	$	(3.9	)	$	(14.5	)	$	(4.7	)	$	8.9		$	(1.6	)	$	—		$	2.6
Other comprehensive loss before reclassifications	(10.4		)	(1.1		)	(0.7		)	(3.4		)	(15.6		)	(20.6		)	(9.8		)	(0.2		)	(3.9		)	(34.5		)
(Gains) charges reclassified to statement of income	—			(6.1		)	—			3.9			(2.2		)	9.6			7.8			—			—			17.4
Ending Balance	$	(26.1	)	$	(0.3	)	$	(2.5	)	$	(3.4	)	$	(32.3	)	$	(15.7	)	$	6.9		$	(1.8	)	$	(3.9	)	$	(14.5	)

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

The table below presents the fair value of the Company's derivative financial instruments as well as their classification on the balance sheet as of September 24, 2016:

	Balance Sheet Location	September 24, 2016		September 26, 2015
Assets:
Derivative instruments designated as a cash flow hedge:
Interest rate cap agreements	Prepaid expenses and other current assets	$	1.0	$	0.7
Interest rate cap agreements	Other Assets	0.4		6.2
		$	1.4	$	6.9
Derivatives not designated as hedging instruments:
Forward foreign currency contracts	Prepaid expenses and other current assets	$	0.2	$	—
Liabilities:
Derivatives not designated as hedging instruments:
Forward foreign currency contracts	Accrued expenses	$	1.3	$	—

Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

The following table presents the unrealized loss recognized in AOCI related to the interest rate caps for the following reporting periods:

	Year Ended September 24, 2016			Year Ended September 26, 2015
Amount of loss recognized in other comprehensive income, net of taxes:
Interest rate cap agreements	$	(3.4	)	$	(3.9	)

Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]

The following table presents the adjustment to fair value (realized and unrealized) recorded within the Consolidated Statements of Income for derivative instruments for which the Company did not elect hedge accounting:

Derivatives not classified as hedging instruments			Location of Gain (Loss) Recognized in Income
	Year Ended September 24, 2016
Forward foreign currency contracts	$	0.4	Other income (expense), net

Accounts Receivable Reserve Activity

Accounts receivable reserve activity for fiscal 2016, 2015 and 2014 was as follows:

	Balance at Beginning of Period		Charged to Costs and Expenses		Write- offs and Payments			Balance at End of Period
Period Ended:
September 24, 2016	$	11.1	$	2.0	$	(0.4	)	$	12.7
September 26, 2015	$	12.0	$	1.6	$	(2.5	)	$	11.1
September 27, 2014	$	8.8	$	4.4	$	(1.2	)	$	12.0

Schedule of Reconciliation of Basic and Diluted Share Amounts

A reconciliation of basic and diluted share amounts for fiscal 2016, 2015, and 2014 was as follows:

	September 24, 2016	September 26, 2015	September 27, 2014
Basic weighted average common shares outstanding	280,213	280,566	275,499
Weighted average common stock equivalents from assumed exercise of stock options and restricted stock units	2,631	2,898	2,368
Incremental shares from Convertible Notes premium	3,312	6,073	493
Diluted weighted average common shares outstanding	286,156	289,537	278,360
Weighted-average anti-dilutive shares related to:
Outstanding stock options	1,029	1,502	5,033
Restricted stock units	62	49	20

Schedule of Product Warranty Activity

Product warranty activity for fiscal 2016 and 2015 was as follows:

	Balance at Beginning of Period		Provisions		Settlements/ Adjustments			Balance at End of Period
Period ended:
September 24, 2016	$	5.4	$	7.1	$	(7.5	)	$	5.0
September 26, 2015	$	6.3	$	6.1	$	(7.0	)	$	5.4

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Summary of Significant Accounting Policies Gain (Loss) on Fair Value Hedges Recognized in Earnings (Details) $ in Millions	12 Months Ended
	Sep. 24, 2016 USD ($)
Foreign Exchange Forward [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Fair Value Hedges Recognized in Earnings	$ 0.4

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Restructuring and Divestiture Charges (Tables)

12 Months Ended

Sep. 24, 2016

Restructuring and Related Activities [Abstract]

Charges Taken Related to Restructuring Actions

The following table displays charges taken related to restructuring actions in fiscal 2016, 2015 and 2014 and a rollforward of the charges to the accrued balances as of September 24, 2016:

	Fiscal 2016 Actions		Fiscal 2015 Actions		Fiscal 2014 Actions		Consolidation of Diagnostics Operations		Other Operating Cost Reductions		Total
Restructuring and Divestiture Charges
Fiscal 2014 charges:
Workforce reductions	$	—	$	—	$	29.5	$	2.9	$	9.8	$	42.2
Non-cash impairment charge	—		—		—		—		3.1		3.1
Facility closure costs	—		—		—		—		0.6		0.6
Other	—		—		—		0.1		0.2		0.3
Fiscal 2014 restructuring charges	$	—	$	—	$	29.5	$	3.0	$	13.7	$	46.2
Divestiture net charges											5.5
Fiscal 2014 restructuring and divestiture charges											$	51.7
Fiscal 2015 charges:
Workforce reductions	$	—	$	10.0	$	6.0	$	0.1	$	0.2	$	16.3
Facility closure costs	—		—		2.0		0.5		0.1		2.6
Fiscal 2015 restructuring charges	$	—	$	10.0	$	8.0	$	0.6	$	0.3	$	18.9
Divestiture net charges											9.6
Fiscal 2015 restructuring and divestiture charges											$	28.5
Fiscal 2016 charges:
Workforce reductions	$	10.5	$	—	$	—	$	—	$	—	$	10.5
Fiscal 2016 restructuring charges	$	10.5	$	—	$	—	$	—	$	—	$	10.5

Charges Taken Related to Accrued Restructuring Actions

	Fiscal 2016 Actions			Fiscal 2015 Actions			Fiscal 2014 Actions			Consolidation of Diagnostics Operations			Other Operating Cost Reductions			Total
Rollforward of Accrued Restructuring
Balance as of September 28, 2013	$	—		$	—		$	—		$	3.0		$	9.3		$	12.3
Fiscal 2014 restructuring charges	$	—		$	—		$	29.5		$	3.0		$	13.7		$	46.2
Stock-based compensation	—			—			(6.6		)	—			—			(6.6		)
Non-cash impairment charges	—			—			—			—			(3.1		)	(3.1		)
Severance payments	—			—			(10.9		)	(3.0		)	(17.1		)	(31.0		)
Other payments	—			—			—			—			(0.9		)	(0.9		)
Balance as of September 27, 2014	$	—		$	—		$	12.0		$	3.0		$	1.9		$	16.9
Fiscal 2015 restructuring charges	$	—		$	10.0		$	8.0		$	0.6		$	0.3		$	18.9
Stock-based compensation	—			(4.1		)	—			—			—			(4.1		)
Severance payments	—			(2.8		)	(16.2		)	(3.0		)	(1.9		)	(23.9		)
Other payments	—			—			(1.3		)	(0.5		)	(0.3		)	(2.1		)
Balance as of September 26, 2015	$	—		$	3.1		$	2.5		$	0.1		$	—		$	5.7
Fiscal 2016 restructuring charges	$	10.5		$	—		$	—		$	—		$	—		$	10.5
Stock-based compensation	(0.4		)	—			—			—			—			(0.4		)
Severance payments	(4.6		)	(2.9		)	(1.4		)	(0.1		)	—			(9.0		)
Other payments	—			—			(0.5		)	—			—			(0.5		)
Balance as of September 24, 2016	$	5.5		$	0.2		$	0.6		$	—		$	—		$	6.3

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Borrowings and Credit Arrangements (Tables)

12 Months Ended

Sep. 24, 2016

Debt Disclosure [Abstract]

Company's Borrowings

The Company’s borrowings consisted of the following:

	September 24, 2016		September 26, 2015
Current debt obligations, net of debt discount and issuance costs:
Term Loan	$	83.8	$	74.4
Revolver	—		175.0
Securitization Program	200.0		—
Convertible Notes	12.2		141.8
Total current debt obligations	296.0		391.2
Long-term debt obligations, net of debt discount and issuance costs:
Term Loan	1,308.2		1,388.3
2022 Senior Notes	977.7		973.9
Convertible Notes	763.5		858.8
Total long-term debt obligations	3,049.4		3,221.0
Total debt obligations	$	3,345.4	$	3,612.2

Schedule Of Long Term Debt By Maturity Table [Text Block]

The debt maturity schedule for the Company’s obligations as of September 24, 2016 is as follows:

	2017		2018		2019		2020		2021		2022 and Thereafter		Total
Term Loan	$	84.4	$	121.9	$	150.0	$	1,050.0	$	—	$	—	$	1,406.3
Securitization Program	200.0		—		—		—		—		—		200.0
2022 Senior Notes	—		—		—		—		—		1,000.0		1,000.0
Convertible Notes (1)	12.3		790.4		—		—		—		—		802.7
	$	296.7	$	912.3	$	150.0	$	1,050.0	$	—	$	1,000.0	$	3,409.0

(1) Classified based on the earliest date of redemption for each respective issuance. In addition, the balance in fiscal 2018 reflects accretion on the 2013 Notes through September 24, 2016.

Schedule Of Convertible Notes And Related Equity Components Recorded In Capital In Excess Of Par Value Net Of Deferred Taxes Table [Text Block]

As of September 24, 2016 and September 26, 2015, the Convertible Notes and related equity components (recorded in additional paid-in-capital, net of deferred taxes) consisted of the following:

	2016			2015
2010 Notes principal amount	$	12.3		$	150.0
Unamortized discount and issuance costs (1)	(0.1		)	(8.2		)
Net carrying amount	$	12.2		$	141.8
Equity component, net of taxes	$	1.6		$	20.0
2012 Notes principal amount	$	363.4		$	500.0
Unamortized discount and issuance costs (1)	(9.5		)	(21.8		)
Net carrying amount	$	353.9		$	478.2
Equity component, net of taxes	$	35.8		$	49.2
2013 Notes principal amount	$	370.0		$	370.0
Principal accretion	57.1			40.5
Unamortized discount and issuance costs (1)	(17.5		)	(29.9		)
Net carrying amount	$	409.6		$	380.6
Equity component, net of taxes	$	131.5		$	131.5

(1) In connection with the adoption of ASU 2015-03, debt issuance costs are presented as direct deduction from the debt liability consistent with the presentation of a debt discount.

Interest Expense under Convertible Notes

Interest expense under the Convertible Notes is as follows:

	Years Ended
	September 24, 2016		September 26, 2015		September 27, 2014
Amortization of debt discount	$	22.3	$	34.9	$	37.1
Amortization of deferred financing costs	1.1		1.7		1.9
Principal accretion	16.6		15.9		15.3
Non-cash interest expense	40.0		52.5		54.3
2.00% accrued interest (cash)	10.0		18.2		22.3
	$	50.0	$	70.7	$	76.6

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Fair Value Measurements (Tables)

12 Months Ended

Sep. 24, 2016

Fair Value Disclosures [Abstract]

Fair Value Assets and Liabilities Measured on Recurring Basis

Assets and liabilities measured and recorded at fair value on a recurring basis consisted of the following:

			Fair Value Measurements at September 24, 2016
	Carrying Value		Quoted Prices in Active Market for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Equity securities	$	1.0	$	1.0	$	—	$	—
Interest rate caps - derivative	1.4		—		1.4		—
Forward foreign currency contracts	0.2		—		0.2		—
Total	$	2.6	$	1.0	$	1.6	$	—
Liabilities:
Deferred compensation liabilities	$	37.0	$	37.0	$	—	$	—
Forward foreign currency contracts	1.3		—		1.3		—
Total	$	38.3	$	37.0	$	1.3	$	—

			Fair Value Measurements at September 26, 2015
	Carrying Value		Quoted Prices in Active Market for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Marketable securities:
Equity securities	$	15.2	$	15.2	$	—	$	—
Mutual funds	5.6		5.6		—		—
Interest rate cap- derivative	6.9		—		6.9		—
Total	$	27.7	$	20.8	$	6.9	$	—
Liabilities:
Deferred compensation liabilities	$	29.4	$	29.4	$	—	$	—
Total	$	29.4	$	29.4	$	—	$	—

Changes in Fair Value of Recurring Fair Value Measurements Using Significant Unobservable Inputs (Level 3), Consisting of Contingent Consideration Liabilities

Changes in the fair value of recurring fair value measurements using significant unobservable inputs (Level 3), which solely consisted of contingent consideration liabilities, during the year ended September 27, 2014 were as follows:

	2014
Balance at beginning of period	$	3.8
Payments / Accruals	(3.8		)
Balance at end of period	$	—

Schedule of Estimated Fair Value of Assets Measured on a Nonrecurring Basis

The following chart depicts certain assets presented at fair value using level 3 inputs under the fair value hierarchy measured on a nonrecurring basis for which the Company has recorded impairment charges:

			Fair Value Measurements Using
	Fair Value		Quoted Prices in Active Market for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)	Significant Unobservable Inputs (Level 3)		Total Losses
Fiscal 2014:
Intangible assets	$	36.2	—	—	$	36.2	$	(32.2	)
Property and equipment	1.0		—	—	1.0		(1.5		)
Buildings	1.4		—	—	1.4		(3.1		)
Cost-method equity investments	0.8		—	—	0.8		(6.9		)
							$	(43.7	)

Estimated Fair Values of Convertible Notes

The estimated fair values of the Company’s Convertible Notes at September 24, 2016 and September 26, 2015 are as follows:

	2016		2015
2010 Notes	20.2		264.1
2012 Notes	481.9		688.2
2013 Notes	458.8		471.8
	$	960.9	$	1,424.1

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Income Taxes (Tables)

12 Months Ended

Sep. 24, 2016

Income Tax Disclosure [Abstract]

Income (Loss) Before Income Taxes

The Company’s income before income taxes consisted of the following:

	Years ended
	September 24, 2016		September 26, 2015		September 27, 2014
Domestic	$	310.7	$	158.3	$	95.1
Foreign	104.6		18.9		(47.0		)
	$	415.3	$	177.2	$	48.1

Provision for Income Taxes

The provision for income taxes contained the following components:

	Years ended
	September 24, 2016			September 26, 2015			September 27, 2014
Federal:
Current	$	209.0		$	185.2		$	242.2
Deferred	(122.7		)	(137.0		)	(212.5		)
	86.3			48.2			29.7
State:
Current	16.6			3.5			22.1
Deferred	(22.7		)	(11.0		)	(24.7		)
	(6.1		)	(7.5		)	(2.6		)
Foreign:
Current	14.7			5.7			9.6
Deferred	(10.4		)	(0.8		)	(5.9		)
	4.3			4.9			3.7
	$	84.5		$	45.6		$	30.8

Reconciliation of Income Tax (Benefit) at U.S. Federal Statutory Rate to Company's Effective Tax Rate

The income tax provision differed from the tax provision computed at the U.S. federal statutory rate due to the following:

	Years ended
	September 24, 2016		September 26, 2015		September 27, 2014
Income tax provision at federal statutory rate	35.0	%	35.0	%	35.0	%
Increase (decrease) in tax resulting from:
Domestic production activities deduction	(5.0	)	(10.1	)	(30.6	)
State income taxes, net of federal benefit	2.0		1.2		4.3
Tax credits	(3.2	)	(3.8	)	(5.2	)
Unrecognized tax benefits	2.4		(1.8	)	2.5
Cumulative translation adjustment write-off	—		1.9		—
Non-deductible compensation	0.1		1.9		5.5
Foreign rate differential	(6.1	)	(1.6	)	10.7
Change in state deferred tax rate	(1.8	)	—		—
Change in valuation allowance	(3.4	)	1.0		35.4
Other	0.3		2.1		6.3
	20.3	%	25.8	%	63.9	%

Significant Components of the Company's Deferred Tax Assets and Liabilities

The Company’s significant deferred tax assets and liabilities were as follows:

	September 24, 2016			September 26, 2015
Deferred tax assets
Net operating loss carryforwards	$	40.0		$	45.4
Capital losses	19.1			25.7
Non-deductible accruals	21.1			16.3
Non-deductible reserves	31.1			26.8
Stock-based compensation	34.8			24.3
Research and other credits	10.7			14.5
Nonqualified deferred compensation plan	14.1			11.3
Other temporary differences	9.2			10.2
	180.1			174.5
Less: valuation allowance	(46.2		)	(60.9		)
	$	133.9		$	113.6
Deferred tax liabilities
Depreciation and amortization	$	(1,030.8	)	$	(1,171.5	)
Debt discounts and deferrals	(75.1		)	(100.1		)
Debt issuance costs	(1.3		)	(1.4		)
	$	(1,107.2	)	$	(1,273.0	)
	$	(973.3	)	$	(1,159.4	)

Activity of the Company's Unrecognized Income Tax Benefits

The Company’s unrecognized income tax benefits activity for fiscal 2016 and 2015 was as follows:

	2016			2015
Balance at beginning of fiscal year	$	154.7		$	137.0
Tax positions related to current year:
Additions	23.9			11.0
Reductions	—			—
Tax positions related to prior years:
Additions related to change in estimate	1.1			21.1
Reductions	(6.9		)	(10.3		)
Payments	(6.0		)	(0.8		)
Lapses in statutes of limitations and settlements	(3.2		)	(3.7		)
Acquired tax positions:
Additions related to reserves acquired from acquisitions	—			0.4
Balance as of the end of the fiscal year	$	163.6		$	154.7

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Stockholders' Equity and Stock-Based Compensation (Tables)

12 Months Ended

Sep. 24, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-Based Compensation Expense in Consolidated Statement of Operations

The following presents stock-based compensation expense in the Company’s Consolidated Statements of Operations in fiscal 2016, 2015 and 2014:

	2016		2015		2014
Cost of revenues	$	10.5	$	8.7	$	7.3
Research and development	10.8		8.6		8.4
Selling and marketing	10.9		8.8		8.2
General and administrative	32.8		29.1		19.5
Restructuring and divestiture	0.4		4.1		6.6
	$	65.4	$	59.3	$	50.0

Information Pertaining to Stock Options Granted and Related Assumptions

Information pertaining to stock options granted during fiscal 2016, 2015 and 2014 and related assumptions are noted in the following table:

	Years ended
	September 24, 2016			September 26, 2015			September 27, 2014
Options granted (in millions)	1.1			1.3			2.4
Weighted-average exercise price	$	39.32		$	27.68		$	22.01
Weighted-average grant date fair value	$	12.91		$	9.95		$	7.67
Assumptions:
Risk-free interest rates	1.6		%	1.7		%	1.2		%
Expected life (in years)	4.7			5.3			4.4
Expected volatility	37.8		%	38.6		%	41.4		%
Dividend yield	—			—			—

Stock Option Activity

The following table summarizes all stock option activity under the Company’s stock option plans for the year ended September 24, 2016:

	Number of Shares (in millions)		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (in Years)	Aggregate Intrinsic Value (in millions)
Options outstanding at September 26, 2015	6.7		$	22.21	4.9	$	119.1
Granted	1.1		39.32
Canceled/ forfeited	(0.5	)	27.00
Exercised	(1.2	)	19.55			$	21.6
Options outstanding at September 24, 2016	6.1		$	25.37	4.9	$	80.1
Options exercisable at September 24, 2016	3.0		$	21.95	3.1	$	48.8
Options vested and expected to vest at September 24, 2016 (1)	5.9		$	25.32	4.9	$	79.0

(1) This represents the number of vested stock options as of September 24, 2016 plus the unvested outstanding options at September 24, 2016 expected to vest in the future, adjusted for estimated forfeitures.

Restricted Stock Unit Activity

A summary of the Company’s RSU activity during the year ended September 24, 2016 is presented below:

Non-vested Shares	Number of Shares (in millions)		Weighted-Average Grant-Date  Fair Value
Non-vested at September 26, 2015	3.7		$	24.54
Granted	1.0		39.38
Vested	(1.2	)	22.96
Forfeited	(0.4	)	25.74
Non-vested at September 24, 2016	3.1		$	29.98

Black-Scholes Model Weighted Average Assumptions Used to Estimate Fair Value of Shares to Be Issued as of Grant Date

The Company uses the Black-Scholes model to estimate the fair value of shares to be issued as of the grant date using the following weighted average assumptions:

	September 24, 2016		September 26, 2015		September 27, 2014
Assumptions:
Risk-free interest rates	0.34	%	0.10	%	0.08	%
Expected life (in years)	0.5		0.5		0.5
Expected volatility	27.2	%	27.4	%	30.0	%
Dividend yield	—		—		—

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Commitments and Contingencies (Tables)

12 Months Ended

Sep. 24, 2016

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]

Future minimum lease payments, including principal and interest, under these leases were as follows at September 24, 2016:

Fiscal 2017	$	3.1
Fiscal 2018	2.9
Fiscal 2019	1.2
Fiscal 2020	1.2
Fiscal 2021	1.2
Thereafter	2.8
Total minimum payments	12.4
Less-amount representing interest	(3.9		)
Total	$	8.5

Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block]

At September 24, 2016, purchase commitments are as follows:

Fiscal 2017	$	58.5
Fiscal 2018	15.6
Fiscal 2019	13.0
Total	$	87.1

Schedule Of Future Minimum Royalty Commitments Table [Text Block]

At September 24, 2016, minimum commitments for these agreements are as follows:

Fiscal 2017	$	0.7
Fiscal 2018	0.7
Fiscal 2019	0.5
Fiscal 2020	0.5
Fiscal 2021	0.5
Thereafter	2.7
Total	$	5.6

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

Future minimum lease payments under all of the Company’s operating leases at September 24, 2016 are as follows:

Fiscal 2017	$	17.3
Fiscal 2018	15.5
Fiscal 2019	10.5
Fiscal 2020	8.3
Fiscal 2021	6.6
Thereafter	14.3
Total	$	72.5

Schedule Of Future Minimum Annual Rental Income Payments Under Sublease Agreements Table [Text Block]

The future minimum annual rental income payments under these sublease agreements at September 24, 2016 are as follows:

Fiscal 2017	$	2.3
Fiscal 2018	2.2
Fiscal 2019	2.1
Fiscal 2020	1.3
Fiscal 2021	0.3
Thereafter	0.9
Total	$	9.1

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Business Segments and Geographic Information (Tables)

12 Months Ended

Sep. 24, 2016

Segment Reporting [Abstract]

Segment Information

Segment information for fiscal 2016, 2015, and 2014 was as follows:

	Years ended
	September 24, 2016		September 26, 2015		September 27, 2014
Total revenues:
Diagnostics	$	1,236.9	$	1,211.8	$	1,186.8
Breast Health	1,112.8		1,063.4		944.7
GYN Surgical	393.1		335.8		307.9
Skeletal Health	89.9		94.0		91.3
	$	2,832.7	$	2,705.0	$	2,530.7
Operating income:
Diagnostics	$	126.0	$	109.5	$	48.7
Breast Health	350.5		296.3		187.6
GYN Surgical	69.1		38.6		30.3
Skeletal Health	3.0		10.7		13.1
	$	548.6	$	455.1	$	279.7
Depreciation and amortization:
Diagnostics	$	341.8	$	358.7	$	376.0
Breast Health	22.6		28.6		41.7
GYN Surgical	99.9		102.7		104.6
Skeletal Health	1.1		1.4		0.9
	$	465.4	$	491.4	$	523.2
Capital expenditures:
Diagnostics	$	53.5	$	55.6	$	52.2
Breast Health	10.6		12.8		10.0
GYN Surgical	17.7		9.5		8.0
Skeletal Health	0.4		0.4		0.4
Corporate	12.3		11.1		9.6
	$	94.5	$	89.4	$	80.2

	September 24, 2016		September 26, 2015		September 27, 2014
Identifiable assets:
Diagnostics	$	3,771.9	$	4,055.8	$	4,383.5
Breast Health	809.1		815.4		859.8
GYN Surgical	1,570.7		1,658.1		1,748.2
Skeletal Health	30.9		25.3		26.1
Corporate	1,134.4		1,087.9		1,351.1
	$	7,317.0	$	7,642.5	$	8,368.7

Revenues by Geography

Revenues by geography as a percentage of total revenues were as follows:

	Years ended
	September 24, 2016		September 26, 2015		September 27, 2014
United States	78.9	%	76.0	%	75.1	%
Europe	10.2	%	11.8	%	13.3	%
Asia-Pacific	7.6	%	8.5	%	7.7	%
All others	3.3	%	3.7	%	3.9	%
	100.0	%	100.0	%	100.0	%

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

The Company’s property, plant and equipment, net are geographically located as follows:

	September 24, 2016		September 26, 2015		September 27, 2014
United States	$	370.7	$	369.1	$	366.8
Costa Rica	28.1		27.7		27.9
Europe	49.2		50.8		56.0
All other countries	12.2		9.5		11.2
	$	460.2	$	457.1	$	461.9

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Accrued Expenses and Other Long-Term Liabilities (Tables)

12 Months Ended

Sep. 24, 2016

Payables and Accruals [Abstract]

Schedule of Accrued Expenses

Accrued expenses and other long-term liabilities consisted of the following:

	September 24, 2016		September 26, 2015
Accrued Expenses
Compensation and employee benefits	$	176.4	$	173.2
Interest	11.7		14.6
Income and other taxes	38.4		13.3
Other	61.1		71.0
	$	287.6	$	272.1

Schedule of Other Long-Term Liabilities

	September 24, 2016		September 26, 2015
Other Long-Term Liabilities
Reserve for income tax uncertainties	$	167.6	$	145.1
Accrued lease obligation—long-term	34.8		34.0
Pension liabilities	11.2		10.1
Other	10.9		11.7
	$	224.5	$	200.9

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Pension and Other Employee Benefits (Tables)

12 Months Ended

Sep. 24, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule of Reconciliation of Benefit Obligations, Plan Assets, Funded Status and Related Actuarial Assumptions

The tables below provide a reconciliation of benefit obligations, plan assets, funded status, and related actuarial assumptions of the Company’s German Pension Benefits.

Change in Benefit Obligation	Years ended
	September 24, 2016			September 26, 2015			September 27, 2014
Benefit obligation at beginning of year	$	(10.0	)	$	(10.3	)	$	(10.1	)
Service cost	—			—			—
Interest cost	(0.2		)	(0.3		)	(0.3		)
Plan participants’ contributions	—			—			—
Actuarial loss	(1.2		)	(0.9		)	(0.8		)
Foreign exchange gain	0.1			1.2			0.6
Benefits paid	0.3			0.3			0.3
Benefit obligation at end of year	(11.0		)	(10.0		)	(10.3		)
Plan assets	—			—			—
Benefit obligation at end of year	$	(11.0	)	$	(10.0	)	$	(10.3	)

Components of Net Periodic Benefit Cost and Related Actuarial Assumptions

The tables below outline the components of the net periodic benefit cost and related actuarial assumptions of the Company’s German Pension Benefits.

Components of Net Periodic Benefit Cost	Years ended
	September 24, 2016			September 26, 2015		September 27, 2014
Service cost	$	—		$	—	$	—
Interest cost	0.4			0.3		0.3
Expected return on plan assets	—			—		—
Amortization of prior service cost	—			—		—
Recognized net actuarial gain	(0.2		)	—		—
Net periodic benefit cost	$	0.2		$	0.3	$	0.3

Schedule of Weighted-Average Net Periodic Benefit Cost Assumptions

Weighted-Average Net Periodic Benefit Cost Assumptions	2016		2015		2014
Discount rate	1.30	%	2.05	%	2.95	%
Expected return on plan assets	—	%	—	%	—	%
Rate of compensation increase	—	%	—	%	—	%

Schedule of Expected Pension Benefit

The table below reflects the total Pension Benefits expected to be paid for the German Pension Benefits each fiscal year as of September 24, 2016:

2017	$	0.3
2018	$	0.3
2019	$	0.4
2020	$	0.4
2021	$	0.4
2022 to 2026	$	2.0

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Quarterly Statement of Operations Information (Unaudited) (Tables)

12 Months Ended

Sep. 24, 2016

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Results of Operations

The following table presents a summary of quarterly results of operations for fiscal 2016 and 2015:

	2016
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Total revenue	$	695.2	$	693.3	$	717.4	$	726.8
Gross profit	379.1		385.0		393.1		406.1
Net income (1)	84.9		68.9		84.8		92.2
Diluted net income per common share	$	0.29	$	0.24	$	0.30	$	0.33

	2015
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
Total revenue	$	652.8	$	655.5	$	693.9	$	702.8
Gross profit	338.6		336.0		378.7		379.4
Net income (2)	29.2		47.8		29.4		25.2
Diluted net income per common share	$	0.10	$	0.17	$	0.10	$	0.09

(1) Net income in the first quarter of fiscal 2016 included restructuring charges of $2.3 million and a realized gain of $25.1 million related to the sale of all the shares in a marketable security investment. Net income in the second quarter of fiscal 2016 included restructuring charges of $3.8 million and a debt extinguishment loss of $4.5 million. Net income in the fourth quarter of fiscal 2016 included restructuring charges of $2.9 million, a debt extinguishment loss of $0.8 million, and an other-than-temporary impairment charge of $1.1 million related to a marketable security.

(2) Net income in the first quarter of fiscal 2015 included restructuring charges of $8.0 million and a debt extinguishment loss of $6.7 million. Net income in the third quarter of fiscal 2015 included restructuring and divestiture charges of $11.9 million and a debt extinguishment loss of $18.2 million. Net income in the fourth quarter of fiscal 2015 included restructuring and divestiture charges of $6.5 million, a debt extinguishment loss of $37.8 million, and an other-than-temporary impairment charge of $7.8 million related to a marketable security.

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Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended							12 Months Ended
	Sep. 24, 2016 USD ($) Customer	Mar. 26, 2016 USD ($)	Dec. 26, 2015 USD ($)	Sep. 26, 2015 USD ($) Customer	Sep. 27, 2014 USD ($)	Mar. 29, 2014 USD ($)	Dec. 28, 2013 USD ($)	Sep. 24, 2016 USD ($) Customer	Sep. 26, 2015 USD ($) Customer	Sep. 27, 2014 USD ($)	Jun. 25, 2016 USD ($)
Significant Accounting Policies [Line Items]
Cash equivalent maturity period								three months or less
Equity investment impairment charges								$ (1,100,000)	$ (7,800,000)	$ (6,900,000)
Number of customers with balance greater than specified percentage | Customer	0			0				0	0
Impairment charges on tangible assets							$ 3,100,000
Impairment charges on long lived assets						$ 28,600,000
Acquired In-process research and development charges					$ 5,100,000
Accumulated Amortization	$ 2,681,500,000			$ 2,299,600,000				$ 2,681,500,000	$ 2,299,600,000
Indefinite-lived Intangible Assets Acquired		$ 4,800,000
Sensitivity Change To Fair Value By Percent								10.00%
Goodwill	2,803,100,000			2,808,200,000				$ 2,803,100,000	2,808,200,000
Percentage of equity ownership at which cost-method investments would not qualify for cost-method accounting								20.00%
Other-than-temporary impairment charges									0	6,900,000
Gross Unrealized Gains				7,200,000					7,200,000
Interest Rate Cap Agreements Aggregate Premium Payable								$ 0	13,200,000	0
Principal Amount Of Borrowings	1,000,000,000							$ 1,000,000,000
Interest Payment Duration								three-year
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax								$ 3,900,000	0	0
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred								6,900,000
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments								1,500,000
Unrealized Gain (Loss) on Foreign Currency Derivatives, Net, before Tax								1,100,000
Notional Amount	165,000,000							$ 165,000,000
Product Warranty Term								1 year
Advertising cost								$ 20,200,000	14,400,000	$ 14,100,000
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax								(2,200,000)	17,400,000
Debt [Member]
Significant Accounting Policies [Line Items]
Debt Issuance Cost									27,600,000
Other Current Assets [Member]
Significant Accounting Policies [Line Items]
Debt Issuance Cost									600,000
Other Noncurrent Assets [Member]
Significant Accounting Policies [Line Items]
Debt Issuance Cost									27,000,000
MRI Breast Coils [Member]
Significant Accounting Policies [Line Items]
Impairment charges on tangible assets						28,600,000
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax									9,600,000
MRI Breast Coils [Member] | Property, Plant and Equipment [Member]
Significant Accounting Policies [Line Items]
Impairment charges on long lived assets						1,500,000
Developed Technology [Member]
Significant Accounting Policies [Line Items]
Accumulated Amortization	1,991,600,000			1,698,500,000				1,991,600,000	1,698,500,000
Developed Technology [Member] | MRI Breast Coils [Member]
Significant Accounting Policies [Line Items]
Impairment charge						26,600,000
Developed Technology [Member] | Cystic Fibrosis [Member]
Significant Accounting Policies [Line Items]
Accumulated Amortization											$ 6,200,000
Trade Names [Member]
Significant Accounting Policies [Line Items]
Accumulated Amortization	141,600,000			131,500,000				$ 141,600,000	$ 131,500,000
Trade Names [Member] | MRI Breast Coils [Member]
Significant Accounting Policies [Line Items]
Impairment charge						500,000
Finite-Lived Intangible Assets [Member] | MRI Breast Coils [Member]
Significant Accounting Policies [Line Items]
Impairment charges on long lived assets						27,100,000
Minimum [Member]
Significant Accounting Policies [Line Items]
Intangible assets useful life								2 years
Defined contract term								3 years
Minimum [Member] | Accounts receivable [Member]
Significant Accounting Policies [Line Items]
Concentration risk, percentage								10.00%	10.00%
Minimum [Member] | Total revenues [Member]
Significant Accounting Policies [Line Items]
Concentration risk, percentage								10.00%	10.00%	10.00%
Maximum [Member]
Significant Accounting Policies [Line Items]
Intangible assets useful life								30 years
Defined contract term								5 years
Cost of Sales [Member] | MRI Breast Coils [Member] | Property, Plant and Equipment [Member]
Significant Accounting Policies [Line Items]
Impairment charges on long lived assets						300,000
General and Administrative Expense [Member] | MRI Breast Coils [Member] | Property, Plant and Equipment [Member]
Significant Accounting Policies [Line Items]
Impairment charges on long lived assets						$ 1,200,000
Interest Rate Cap [Member]
Significant Accounting Policies [Line Items]
Interest Rate Cash Flow Hedge Asset at Fair Value	1,400,000			6,900,000				$ 1,400,000	$ 6,900,000
Equity Securities [Member]
Significant Accounting Policies [Line Items]
Gross Unrealized Gains	0				$ 10,200,000			0		$ 10,200,000
Equity Securities [Member]
Significant Accounting Policies [Line Items]
Realized Gain (Loss) on Marketable Securities, Cost Method Investments, and Other Investments			$ (25,100,000)
Equity investment impairment charges	$ 1,100,000			$ 7,800,000
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax									(7,800,000)
Pension in Accumulated Other Comprehensive Income [Member]
Significant Accounting Policies [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax								0	0
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Significant Accounting Policies [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax								$ 0	$ 9,600,000

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Summary of Significant Accounting Policies - Summary of Marketable Securities (Detail) - USD ($) $ in Millions	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Schedule Of Marketable Securities [Line Items]
Gross Unrealized Gains		$ 7.2
Other than temporary impairment		(7.8)
Equity Securities [Member]
Schedule Of Marketable Securities [Line Items]
Cost	$ 2.4	16.1	$ 15.5
Gross Unrealized Gains	0.0		10.2
Gross Unrealized Losses	(0.3)	(0.3)	(1.3)
Other than temporary impairment	(1.1)	(7.8)	0.0
Marketable securities	$ 1.0	$ 15.2	$ 24.4

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Summary of Significant Accounting Policies - Supplemental Cash Flow Statement Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Accounting Policies [Abstract]
Cash paid during the period for income taxes	$ 184.8	$ 168.7	$ 231.8
Cash paid during the period for interest	$ 104.0	$ 143.0	$ 155.7

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Summary of Significant Accounting Policies - Schedule of Inventories (Detail) - USD ($) $ in Millions	Sep. 24, 2016	Sep. 26, 2015
Accounting Policies [Abstract]
Raw materials	$ 96.4	$ 98.3
Work-in-process	51.7	58.7
Finished goods	126.6	126.1
Inventories	$ 274.7	$ 283.1

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Summary of Significant Accounting Policies - Estimated Useful Lives of Property, Plant and Equipments (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Property, Plant and Equipment [Line Items]
Manufacturing Equipment And Software	$ 381.9	$ 365.9
Equipment Under Customer Usage Agreements	334.6	305.7
Buildings and Improvements, Gross	186.1	182.1
Leasehold Improvements, Gross	65.6	59.2
Land	51.9	51.4
Furniture and Fixtures, Gross	18.4	17.3
Property, Plant and Equipment, Gross	1,038.5	981.6
Less - accumulated depreciation and amortization	(578.3)	(524.5)
Property, plant and equipment, net	$ 460.2	$ 457.1	$ 461.9
Building and Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	35 years
Building and Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	40 years
Equipment and Software [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	3 years
Equipment and Software [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	10 years
Equipment Under Customer Usage Agreements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	3 years
Equipment Under Customer Usage Agreements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	8 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	5 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	7 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life	Shorter of the Original Term of Lease or Estimated Useful Life

XML

Summary of Significant Accounting Policies - Schedule of Intangible Assets (Detail) - USD ($) $ in Millions	Sep. 24, 2016	Sep. 26, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 5,324.9	$ 5,322.8
Accumulated Amortization	2,681.5	2,299.6
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	3,983.7	3,979.1
Accumulated Amortization	1,991.6	1,698.5
In-process Research and Development [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	3.7	3.7
Accumulated Amortization	0.0	0.0
Customer Relationships and Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	1,098.9	1,101.1
Accumulated Amortization	546.2	467.5
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	236.2	236.4
Accumulated Amortization	141.6	131.5
Business Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	2.4	2.5
Accumulated Amortization	$ 2.1	$ 2.1

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Summary of Significant Accounting Policies - Schedule of Estimated Amortization Expense (Detail) $ in Millions	Sep. 24, 2016 USD ($)
Accounting Policies [Abstract]
Fiscal 2017	$ 365.8
Fiscal 2018	355.0
Fiscal 2019	343.1
Fiscal 2020	331.4
Fiscal 2021	$ 312.0

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Summary of Significant Accounting Policies - Rollforward of Goodwill Activity by Reportable Segments (Detail) $ in Millions	12 Months Ended
	Sep. 24, 2016 USD ($)
Goodwill [Line Items]
Goodwill Tax Adjustments	$ 1.3
Goodwill [Roll Forward]
Balance at September 26, 2015	2,808.2
Foreign currency and other	(3.8)
Balance at September 24, 2016	2,803.1
Diagnostics [Member]
Goodwill [Line Items]
Goodwill Tax Adjustments	1.3
Goodwill [Roll Forward]
Balance at September 26, 2015	1,152.3
Foreign currency and other	(2.8)
Balance at September 24, 2016	1,148.2
Breast Health [Member]
Goodwill [Line Items]
Goodwill Tax Adjustments	0.0
Goodwill [Roll Forward]
Balance at September 26, 2015	631.8
Foreign currency and other	0.0
Balance at September 24, 2016	631.8
GYN Surgical [Member]
Goodwill [Line Items]
Goodwill Tax Adjustments	0.0
Goodwill [Roll Forward]
Balance at September 26, 2015	1,016.0
Foreign currency and other	(1.0)
Balance at September 24, 2016	1,015.0
Skeletal Health [Member]
Goodwill [Line Items]
Goodwill Tax Adjustments	0.0
Goodwill [Roll Forward]
Balance at September 26, 2015	8.1
Foreign currency and other	0.0
Balance at September 24, 2016	$ 8.1

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Summary of Significant Accounting Policies - Schedule of Other Assets (Detail) - USD ($) $ in Millions	Sep. 24, 2016	Sep. 26, 2015
Accounting Policies [Abstract]
Cash Surrender Value of Life Insurance	$ 36.0	$ 27.5
Manufacturing access fees	9.6	11.6
Cash Flow Hedge Derivative Instrument Assets at Fair Value	0.4	6.2
Mutual funds	0.0	5.6
Cost-method equity investments	3.5	4.2
Deferred Tax Assets, Gross, Noncurrent	9.3	0.0
Other	23.9	17.9
Other assets	$ 83.7	$ 88.2

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Summary of Significant Accounting Policies - Changes in accumulated balances of other comprehensive income (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Accounting Policies [Abstract]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	$ (26.1)	$ (15.7)	$ (4.7)
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(0.3)	6.9	8.9
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	2.5	1.8	1.6
Accumulated other comprehensive Income Loss Hedge	(3.4)	(3.9)	0.0
Accumulated Other Comprehensive Income (Loss), Net of Tax	(32.3)	(14.5)	2.6
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	(10.4)	(20.6)	(13.3)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	1.1	9.8	3.2
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax, Portion Attributable to Parent	0.7	0.2	1.3
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	(3.4)	(3.9)	$ 0.0
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(15.6)	(34.5)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ (2.2)	$ 17.4

XML

Summary of Significant Accounting Policies - Schedule of Derivative Instruments on the Consolidated Balance Sheets (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	$ (3.4)	$ (3.9)	$ 0.0
Cash Flow Hedge Derivative Instrument Assets at Fair Value	0.4	6.2
Interest Rate Cap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cash Flow Hedge Derivative Instrument Assets at Fair Value	1.4	6.9
Interest Rate Cap [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cash Flow Hedge Derivative Instrument Assets at Fair Value	1.0	0.7
Interest Rate Cap [Member] | Other Assets [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cash Flow Hedge Derivative Instrument Assets at Fair Value	0.4	6.2
Foreign Exchange Forward [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cash Flow Hedge Derivative Instrument Assets at Fair Value	0.2	0.0
Foreign Exchange Forward [Member] | Accrued Liabilities [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cash Flow Hedge Derivative Instrument Assets at Fair Value	$ 1.3	$ 0.0

XML

Summary of Significant Accounting Policies - Amount of loss recognized in other comprehensive income, net of taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ (2.2)	$ 17.4
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	(3.4)	(3.9)	$ 0.0
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.0	9.6
Equity Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(6.1)	7.8
Interest Rate Cap [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ 3.9	$ 0.0

XML

Summary of Significant Accounting Policies - Accounts Receivable Reserve Activity (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance at Beginning of Period	$ 11.1	$ 12.0	$ 8.8
Charged to Costs and Expenses	2.0	1.6	4.4
Write- offs and Payments	(0.4)	(2.5)	(1.2)
Balance at End of Period	$ 12.7	$ 11.1	$ 12.0

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Summary of Significant Accounting Policies - Reconciliation of Basic and Diluted Share Amounts (Detail) - shares shares in Thousands	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Earnings Per Share [Line Items]
Basic weighted average common shares outstanding (in shares)	280,213	280,566	275,499
Weighted Average Common Stock Equivalents From Assumed Exercise Of Stock Options And Restricted Stock Units	2,631	2,898	2,368
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities	3,312	6,073	493
Diluted weighted average common shares outstanding (in shares)	286,156	289,537	278,360
Outstanding Stock Options [Member]
Weighted-average anti-dilutive shares related to:
Weighted-average anti-dilutive shares (in shares)	1,029	1,502	5,033
Restricted Stock Units [Member]
Weighted-average anti-dilutive shares related to:
Weighted-average anti-dilutive shares (in shares)	62	49	20

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Summary of Significant Accounting Policies - Product Warranty (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance at Beginning of Period	$ 5.4	$ 6.3
Provisions	7.1	6.1
Settlements/ Adjustments	(7.5)	(7.0)
Balance at End of Period	$ 5.0	$ 5.4

XML

Restructuring and Divestiture Charges - Charges Taken Related to Restructuring Actions (Detail) - USD ($) $ in Millions	3 Months Ended						12 Months Ended
	Sep. 24, 2016	Mar. 26, 2016	Dec. 26, 2015	Sep. 26, 2015	Jun. 27, 2015	Dec. 27, 2014	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Restructuring Cost and Reserve [Line Items]
Non-cash impairment charges							$ 0.0	$ 0.0	$ 38.4
Fiscal restructuring and divestiture charges	$ 2.9	$ 3.8	$ 2.3	$ 6.5	$ 11.9	$ 8.0	10.5	28.5	51.7
Fiscal 2014 Charges [Member] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions									42.2
Non-cash impairment charges									3.1
Facility closure costs									0.6
Other									0.3
Fiscal restructuring charges									46.2
Divestiture net charges									5.5
Fiscal restructuring and divestiture charges									51.7
Fiscal 2015 Charges [Member] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions								16.3
Facility closure costs								2.6
Fiscal restructuring charges								18.9
Divestiture net charges								9.6
Fiscal restructuring and divestiture charges								28.5
Fiscal 2016 Charges [Domain] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions							10.5
Fiscal restructuring charges							10.5
Fiscal 2016 Actions [Domain] | Fiscal 2014 Charges [Member] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions									0.0
Non-cash impairment charges									0.0
Facility closure costs									0.0
Other									0.0
Fiscal restructuring charges									0.0
Fiscal 2016 Actions [Domain] | Fiscal 2015 Charges [Member] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions								0.0
Facility closure costs								0.0
Fiscal restructuring charges								0.0
Fiscal 2016 Actions [Domain] | Fiscal 2016 Charges [Domain] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions							10.5
Fiscal restructuring charges							10.5
Fiscal 2015 Actions [Member] | Fiscal 2014 Charges [Member] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions									0.0
Non-cash impairment charges									0.0
Facility closure costs									0.0
Other									0.0
Fiscal restructuring charges									0.0
Fiscal 2015 Actions [Member] | Fiscal 2015 Charges [Member] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions								10.0
Facility closure costs								0.0
Fiscal restructuring charges								10.0
Fiscal 2015 Actions [Member] | Fiscal 2016 Charges [Domain] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions							0.0
Fiscal restructuring charges							0.0
Fiscal 2014 Actions [Member] | Fiscal 2014 Charges [Member] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions									29.5
Non-cash impairment charges									0.0
Facility closure costs									0.0
Other									0.0
Fiscal restructuring charges									29.5
Fiscal 2014 Actions [Member] | Fiscal 2015 Charges [Member] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions								6.0
Facility closure costs								2.0
Fiscal restructuring charges								8.0
Fiscal 2014 Actions [Member] | Fiscal 2016 Charges [Domain] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions							0.0
Fiscal restructuring charges							0.0
Consolidation of Diagnostics Operations [Member] | Fiscal 2014 Charges [Member] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions									2.9
Non-cash impairment charges									0.0
Facility closure costs									0.0
Other									0.1
Fiscal restructuring charges									3.0
Consolidation of Diagnostics Operations [Member] | Fiscal 2015 Charges [Member] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions								0.1
Facility closure costs								0.5
Fiscal restructuring charges								0.6
Consolidation of Diagnostics Operations [Member] | Fiscal 2016 Charges [Domain] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions							0.0
Fiscal restructuring charges							0.0
Other Operating Cost Reductions [Member] | Fiscal 2014 Charges [Member] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions									9.8
Non-cash impairment charges									3.1
Facility closure costs									0.6
Other									0.2
Fiscal restructuring charges									$ 13.7
Other Operating Cost Reductions [Member] | Fiscal 2015 Charges [Member] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions								0.2
Facility closure costs								0.1
Fiscal restructuring charges								$ 0.3
Other Operating Cost Reductions [Member] | Fiscal 2016 Charges [Domain] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Workforce reductions							0.0
Fiscal restructuring charges							$ 0.0

XML

Restructuring and Divestiture Charges - Charges Taken Related to Accrued Restructuring Actions (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Restructuring Reserve [Roll Forward]
Non-cash impairment charges	$ 0.0	$ 0.0	$ (38.4)
Fiscal 2013 Charges [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance			12.3
Fiscal 2013 Charges [Member] | Fiscal 2016 Actions [Domain] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance			0.0
Fiscal 2013 Charges [Member] | Fiscal 2015 Actions [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance			0.0
Fiscal 2013 Charges [Member] | Fiscal 2014 Actions [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance			0.0
Fiscal 2013 Charges [Member] | Consolidation of Diagnostics Operations [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance			3.0
Fiscal 2013 Charges [Member] | Other Operating Cost Reductions [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance			9.3
Fiscal 2014 Charges [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance		16.9
Fiscal restructuring charges			46.2
Stock-based compensation			(6.6)
Non-cash impairment charges			(3.1)
Severance payments			(31.0)
Other payments			(0.9)
Balance			16.9
Fiscal 2014 Charges [Member] | Fiscal 2016 Actions [Domain] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance		0.0
Fiscal restructuring charges			0.0
Stock-based compensation			0.0
Non-cash impairment charges			0.0
Severance payments			0.0
Other payments			0.0
Balance			0.0
Fiscal 2014 Charges [Member] | Fiscal 2015 Actions [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance		0.0
Fiscal restructuring charges			0.0
Stock-based compensation			0.0
Non-cash impairment charges			0.0
Severance payments			0.0
Other payments			0.0
Balance			0.0
Fiscal 2014 Charges [Member] | Fiscal 2014 Actions [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance		12.0
Fiscal restructuring charges			29.5
Stock-based compensation			(6.6)
Non-cash impairment charges			0.0
Severance payments			(10.9)
Other payments			0.0
Balance			12.0
Fiscal 2014 Charges [Member] | Consolidation of Diagnostics Operations [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance		(3.0)
Fiscal restructuring charges			3.0
Stock-based compensation			0.0
Non-cash impairment charges			0.0
Severance payments			(3.0)
Other payments			0.0
Balance			(3.0)
Fiscal 2014 Charges [Member] | Other Operating Cost Reductions [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance		1.9
Fiscal restructuring charges			13.7
Stock-based compensation			0.0
Non-cash impairment charges			(3.1)
Severance payments			(17.1)
Other payments			(0.9)
Balance			$ 1.9
Fiscal 2015 Charges [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance	5.7
Fiscal restructuring charges		18.9
Stock-based compensation		4.1
Severance payments		23.9
Other payments		2.1
Balance		5.7
Fiscal 2015 Charges [Member] | Fiscal 2016 Actions [Domain] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance	0.0
Fiscal restructuring charges		0.0
Stock-based compensation		0.0
Severance payments		0.0
Other payments		0.0
Balance		0.0
Fiscal 2015 Charges [Member] | Fiscal 2015 Actions [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance	3.1
Fiscal restructuring charges		10.0
Stock-based compensation		4.1
Severance payments		2.8
Other payments		0.0
Balance		3.1
Fiscal 2015 Charges [Member] | Fiscal 2014 Actions [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance	2.5
Fiscal restructuring charges		8.0
Stock-based compensation		0.0
Severance payments		(16.2)
Other payments		(1.3)
Balance		2.5
Fiscal 2015 Charges [Member] | Consolidation of Diagnostics Operations [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance	(0.1)
Fiscal restructuring charges		0.6
Stock-based compensation		0.0
Severance payments		(3.0)
Other payments		(0.5)
Balance		(0.1)
Fiscal 2015 Charges [Member] | Other Operating Cost Reductions [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance	0.0
Fiscal restructuring charges		0.3
Stock-based compensation		0.0
Severance payments		1.9
Other payments		0.3
Balance		$ 0.0
Fiscal 2016 Charges [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Fiscal restructuring charges	(10.5)
Stock-based compensation	(0.4)
Severance payments	(9.0)
Other payments	(0.5)
Balance	6.3
Fiscal 2016 Charges [Member] | Fiscal 2016 Actions [Domain] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Fiscal restructuring charges	10.5
Stock-based compensation	0.4
Severance payments	4.6
Other payments	0.0
Balance	5.5
Fiscal 2016 Charges [Member] | Fiscal 2015 Actions [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Fiscal restructuring charges	0.0
Stock-based compensation	0.0
Severance payments	2.9
Other payments	0.0
Balance	0.2
Fiscal 2016 Charges [Member] | Fiscal 2014 Actions [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Fiscal restructuring charges	0.0
Stock-based compensation	0.0
Severance payments	1.4
Other payments	0.5
Balance	0.6
Fiscal 2016 Charges [Member] | Consolidation of Diagnostics Operations [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Fiscal restructuring charges	0.0
Stock-based compensation	0.0
Severance payments	0.1
Other payments	0.0
Balance	0.0
Fiscal 2016 Charges [Member] | Other Operating Cost Reductions [Member] | Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Fiscal restructuring charges	0.0
Stock-based compensation	0.0
Severance payments	0.0
Other payments	0.0
Balance	$ 0.0

XML

Restructuring and Divestiture Charges - Additional Information (Detail)	3 Months Ended										12 Months Ended
	Sep. 24, 2016 USD ($)	Mar. 26, 2016 USD ($)	Dec. 26, 2015 USD ($)	Sep. 26, 2015 USD ($)	Jun. 27, 2015 USD ($)	Dec. 27, 2014 USD ($)	Sep. 27, 2014 USD ($)	Dec. 28, 2013 USD ($) employee	Mar. 30, 2013 USD ($)	Sep. 29, 2012 USD ($)	Sep. 24, 2016 USD ($)	Sep. 26, 2015 USD ($)	Sep. 27, 2014 USD ($)	Sep. 28, 2013 USD ($)	Sep. 29, 2012 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and divestiture charges	$ 2,900,000	$ 3,800,000	$ 2,300,000	$ 6,500,000	$ 11,900,000	$ 8,000,000					$ 10,500,000	$ 28,500,000	$ 51,700,000
Impairment charges of equipment fair value								$ 3,100,000
Loss on sale of business							$ 5,300,000				0	(9,600,000)	(5,500,000)
Restructuring Reserve, Translation and Other Adjustment					$ 9,600,000
Restructuring Charges [Member] | San Diego [Member]
Restructuring Cost and Reserve [Line Items]
Severance charges	900,000
Expected Future Charges											200,000
Restructuring Charges [Member] | Bedford [Member]
Restructuring Cost and Reserve [Line Items]
Severance charges											1,700,000
severance and benefits and facility closure costs											0
Restructuring Charges [Member] | International [Member]
Restructuring Cost and Reserve [Line Items]
Severance charges											7,900,000
Compensation charges											400,000
Restructuring Charges [Member] | Fiscal 2015 Charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and divestiture charges												28,500,000
Reduction Of Workforce Expenses												16,300,000
Facility Closure Costs												2,600,000
Fiscal 2015 Actions [Member] | Restructuring Charges [Member] | Fiscal 2015 Charges [Member]
Restructuring Cost and Reserve [Line Items]
Severance charges												0
Compensation charges												4,100,000
Reduction Of Workforce Expenses												10,000,000
Facility Closure Costs												0
Fiscal 2014 Actions [Member]
Restructuring Cost and Reserve [Line Items]
Severance charges								6,300,000					16,600,000
Compensation charges								400,000					1,800,000
Fiscal 2014 Actions [Member] | Jack Cumming [Member]
Restructuring Cost and Reserve [Line Items]
Severance charges								6,600,000
Compensation charges								$ 4,400,000
Fiscal 2014 Actions [Member] | Restructuring Charges [Member] | Fiscal 2015 Charges [Member]
Restructuring Cost and Reserve [Line Items]
Reduction Of Workforce Expenses												6,000,000
Facility Closure Costs												$ 2,000,000
Number Office Locations related to Facility Closure Costs												0
Consolidation of Diagnostics Operations [Member]
Restructuring Cost and Reserve [Line Items]
Severance charges											0	$ 0
severance and benefits and facility closure costs													0
Employee retention program, payments in cash									$ 9,700,000
Consolidation of Diagnostics Operations [Member] | Molecular Diagnostics Operations [Member]
Restructuring Cost and Reserve [Line Items]
Severance charges												100,000	3,000,000	$ 3,200,000	$ 900,000
severance and benefits and facility closure costs											0
Facility Closure Costs												500,000
Exiting charges										$ 600,000
Consolidation of Diagnostics Operations [Member] | Restructuring Charges [Member]
Restructuring Cost and Reserve [Line Items]
Severance charges														10,800,000	13,300,000
Compensation charges														$ 6,300,000	$ 3,500,000
Consolidation of Diagnostics Operations [Member] | Restructuring Charges [Member] | Fiscal 2015 Charges [Member]
Restructuring Cost and Reserve [Line Items]
Reduction Of Workforce Expenses												100,000
Facility Closure Costs												500,000
Other Operating Cost Reductions [Member]
Restructuring Cost and Reserve [Line Items]
Severance charges												300,000	$ 8,700,000
Number of employees affected for severance benefits | employee								95
Impairment charges of equipment fair value								$ 3,100,000
Other Operating Cost Reductions [Member] | Restructuring Charges [Member] | Fiscal 2015 Charges [Member]
Restructuring Cost and Reserve [Line Items]
Reduction Of Workforce Expenses												200,000
Facility Closure Costs												$ 100,000
Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Capital Lease Obligations, Current	8,000,000										8,000,000
Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Capital Lease Obligations, Current	$ 12,000,000										$ 12,000,000

XML

Borrowings and Credit Arrangements - Company's Borrowings (Detail) - USD ($) $ in Millions	Sep. 24, 2016	Sep. 26, 2015
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	$ 296.0	$ 391.2
Convertible Notes	12.2	141.8
Convertible Notes	763.5	858.8
Total long-term debt obligations	3,049.4	3,221.0
Total debt obligations	3,345.4	3,612.2
Term Loan [Member]
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	83.8	74.4
Long-term debt obligations, net of debt discount	1,308.2	1,388.3
Revolver [Member]
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	0.0	175.0
Accounts Receivable Securitization [Member]
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	200.0	0.0
2022 Senior Notes [Member]
Debt Instrument [Line Items]
Long-term debt obligations, net of debt discount	$ 977.7	$ 973.9

XML

Borrowings and Credit Arrangements - Debt Maturity Schedule for Components of Company's Obligations (Details) $ in Millions	Sep. 24, 2016 USD ($)
Debt Instrument [Line Items]
2017	$ 296.7
2018	912.3
2019	150.0
2020	1,050.0
2021	0.0
2022 and Thereafter	1,000.0
Total	3,409.0
Term Loan [Member]
Debt Instrument [Line Items]
2017	84.4
2018	121.9
2019	150.0
2020	1,050.0
2021	0.0
2022 and Thereafter	0.0
Total	1,406.3
Accounts Receivable Securitization [Member]
Debt Instrument [Line Items]
2017	200.0
2018	0.0
2019	0.0
2020	0.0
2021	0.0
2022 and Thereafter	0.0
Total	200.0
2022SeniorNotes [Member]
Debt Instrument [Line Items]
2017	0.0
2018	0.0
2019	0.0
2020	0.0
2021	0.0
2022 and Thereafter	1,000.0
Total	1,000.0
Convertible Notes [Member]
Debt Instrument [Line Items]
2017	12.3
2018	790.4
2019	0.0
2020	0.0
2021	0.0
2022 and Thereafter	0.0
Total	$ 802.7

XML

Borrowings and Credit Arrangements - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions									1 Months Ended		3 Months Ended									9 Months Ended		12 Months Ended
	Nov. 09, 2016	May 29, 2015	Dec. 24, 2014	Feb. 26, 2014	Nov. 14, 2013	Oct. 31, 2013	Feb. 14, 2013	Feb. 29, 2012	Aug. 01, 2012	Dec. 10, 2007	Sep. 24, 2016	Mar. 26, 2016	Dec. 26, 2015	Sep. 26, 2015	Jun. 27, 2015	Dec. 27, 2014	Mar. 29, 2014	Dec. 28, 2013	Dec. 25, 2010	Jul. 01, 2015	Jun. 27, 2015	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014	Aug. 01, 2015	Jul. 02, 2015	Nov. 18, 2010
Debt Instrument [Line Items]
Debt extinguishment loss											$ 800,000	$ 4,500,000		$ (37,800,000)	$ 18,200,000	$ 6,700,000						$ 5,300,000	$ 62,700,000	$ 7,400,000
Payments of Debt Issuance Costs																						0	22,700,000	2,400,000
Non-cash interest expense amortization of debt discount and deferred financing costs																						52,100,000	63,800,000	68,700,000
Repayments of Convertible Debt																						392,800,000	543,700,000	0
Principal Amount Of Borrowings											1,000,000,000											1,000,000,000
Convertible Notes Payable, Current											$ 12,200,000			141,800,000								12,200,000	141,800,000
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt																						$ (94,400,000)	(216,900,000)
Failure To Comply With Reporting Obligations Penalty Fee Percentage Of Convertible Notes											0.25%											0.25%
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Maximum Number of Shares											29.6											29.6
Period To Remedy Event Of Default For Failure To Comply With Reporting Obligations Of Convertible Notes																						90 days
Amount Repaid Under Revolver																						$ 175,000,000
Long-term Debt, Current Maturities											$ 296,000,000			391,200,000								296,000,000	391,200,000
Credit Agreement [Member]
Debt Instrument [Line Items]
Proceeds under credit agreement		$ 1,680,000,000
Debt extinguishment loss															$ 18,200,000
Number of Debt Instruments															2
Direct Third Party Costs Interest Expense															$ 4,600,000
Payments of Debt Issuance Costs															3,800,000
Fees recorded as debt discount															$ 4,900,000
Maximum Range Of Present Value Of Cash Flow Percentage															10.00%
Interest expense																						40,400,000	75,300,000	54,700,000
Non-cash interest expense amortization of debt discount and deferred financing costs																						4,400,000	$ 9,000,000	$ 12,700,000
Notes principal amount									$ 2,800,000,000
Principal Amount Of Borrowings									2,500,000,000		1,410,000,000											$ 1,410,000,000
Net Proceeds From Debt Offering									$ 2,410,000,000
Line of Credit Facility, Interest Rate During Period																						2.08%	2.43%	2.89%
Leverage Ratio Maximum																						5.50
Decreased Net Leverage Ratio Pursuant To Senior Secured Credit Facility																						4.00
Interest Coverage Ratio																						3.75
Credit Agreement [Member] | Percentage Added to Eurodollar Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.50%
Term Loan [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate During Period																						2.05%
Senior Notes [Member]
Debt Instrument [Line Items]
Debt extinguishment loss											$ 22,300,000
Interest expense																						$ 56,016,000	$ 67,247,000	$ 64,000,000
Non-cash interest expense amortization of debt discount and deferred financing costs																						$ 3,804,000	$ 2,138,000	1,700,000
Debt Instrument, Interest Rate During Period																				6.25%
Long Term Debt Obligations Without Convertible Notes																										$ 1,000,000,000
Final interest payment																									$ 31,250,000
2022 Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Period																							2022
Debt Instrument, Interest Rate During Period																							5.25%
Long Term Debt Obligations Without Convertible Notes																										$ 1,000,000,000
Offering Price Of Principal Amount																										100.00%
Debt Instrument Maximum Percentage Of Redemption Of Senior Notes																										35.00%
Debt Instrument Percentage Of Redemption Price																										100.00%
Debt Instrument Percentage Of Redemption Price Second Period																										105.25%
Debt Instrument Percentage Of Redemption Price Third Period																										102.625%
Debt Instrument Percentage Of Redemption Price Fourth Period																										101.313%
Debt Instrument Percentage Of Redemption Price Fifth Period																										100.00%
Percentage Price Of Principal Amount For Repurchase Of Senior Note Change In Control											101.00%
Convertible Notes [Member]
Debt Instrument [Line Items]
Debt extinguishment loss											$ 15,500,000
Gains (Losses) on Recourse Debt											(14,400,000)
Debt Instrument, Maturity Date Range, Start																						Dec. 15, 2017
Redemption Price As Percentage Of Principal Amount Plus Accrued And Unpaid Interest																						100.00%
Cash Per Original Principle Amount Of Exchange Notes																						$ 1,000
Convertible Notes Issuance Expense																						4,100,000
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt											246,100,000											$ 32,500,000
Write off of Deferred Debt Issuance Cost											700,000
Allocated Third Party Costs											$ 400,000
Debt Instrument Nonconvertible Effective Interest Rate											2.71%
Deferred Taxes, Reacquisition of Equity Component											$ 29,200,000
Convertible Notes [Member] | 2007 Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage										2.00%
Notes principal amount					$ 405,000,000		$ 370,000,000	$ 500,000,000		$ 1,725,000,000																	$ 450,000,000
Convertible Notes [Member] | Two Thousand Thirteen Original Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage											2.00%											2.00%
Exceeds Percentage Of Accreted Principal Amount Of Original Notes																						120.00%
Principal Convertible To Common Stock																						$ 1,000,000
Accounts Receivable Securitization [Member]
Debt Instrument [Line Items]
Interest expense																						1,000,000
Principal Amount Of Borrowings											$ 200,000,000											$ 200,000,000
Line of Credit Facility, Interest Rate During Period																						0.00%
Term AR Securitization Program																						1 year
Accounts Receivable from Securitization											200,000,000											$ 200,000,000
Debt Instrument, Description of Variable Rate Basis																						0.007
Accounts Receivable Securitization [Member] | Maximum [Member]
Debt Instrument [Line Items]
Accounts Receivable from Securitization											200,000,000											$ 200,000,000
Accounts Receivable Securitization [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate During Period																						1.22%
Long-term Debt, Current Maturities											$ 200,000,000			$ 0								$ 200,000,000	$ 0
Convertible Notes Payable [Member]
Debt Instrument [Line Items]
Debt extinguishment loss												(4,500,000)										(5,300,000)
Interest expense																						50,000,000	70,700,000	76,600,000
Non-cash interest expense amortization of debt discount and deferred financing costs																						$ 40,000,000	$ 52,500,000	$ 54,300,000
Debt Instrument, Interest Rate, Stated Percentage											2.00%			2.00%								2.00%	2.00%
Term Loan [Member]
Debt Instrument [Line Items]
Long Term Debt Obligations Without Convertible Notes											$ 1,308,200,000			$ 1,388,300,000								$ 1,308,200,000	$ 1,388,300,000
Long-term Debt, Current Maturities											83,800,000			74,400,000								83,800,000	74,400,000
Term Loan [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity											1,500,000,000											$ 1,500,000,000
Debt Instrument, Maturity Date																						May 29, 2020
Term Loan [Member] | Credit Agreement [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instruments Principal Repayment Due Per Quarter																						$ 18,750,000
Term Loan [Member] | Credit Agreement [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instruments Principal Repayment Due Per Quarter																						37,500,000
Revolver [Member]
Debt Instrument [Line Items]
Long-term Debt, Current Maturities											0			175,000,000								0	175,000,000
Revolver [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity											$ 1,000,000,000											$ 1,000,000,000
Debt Instrument, Maturity Date																						May 29, 2020
Amount borrowed under revolver		$ 175,000,000
Wholly owned foreign subsidiary borrowing limit		100,000,000
Term Loan A [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		1,000,000,000
Debt Instrument, Maturity Date																					Aug. 01, 2017
Revolving Credit Facility [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		300,000,000
Debt Instrument, Maturity Date																					Aug. 01, 2017
Term Loan B [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 1,500,000,000
Debt Instrument, Maturity Date																					Aug. 01, 2019
Prepaid principal amount			$ 300,000,000	$ 25,000,000		$ 100,000,000
Debt extinguishment loss													$ (6,700,000)				$ 4,400,000	$ 2,900,000
Number of Debt Instruments				2
Direct Third Party Costs Interest Expense																	$ 1,000,000
Maximum Range Of Present Value Of Cash Flow Percentage				10.00%
2007 Notes [Member] | Convertible Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Period										2037
November Eighteen Two Thousand Ten Original Notes [Member] | Convertible Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage																											2.00%
Debt Instrument Maturity Period																			2037
Notes principal amount																											$ 450,000,000
November Eighteen Two Thousand Ten Original Notes [Member] | Convertible Notes Payable [Member]
Debt Instrument [Line Items]
Notes principal amount												90,000,000
February Twenty Nine Two Thousand Twelve Original Notes [Member]
Debt Instrument [Line Items]
Convertible Notes, Triggering Events											$ 0											$ 0
February Twenty Nine Two Thousand Twelve Original Notes [Member] | Convertible Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage								2.00%
Debt Instrument Maturity Period								2042
Notes principal amount								$ 500,000,000
Two Thousand Seven Original Notes [Member] | Convertible Notes [Member]
Debt Instrument [Line Items]
Debt Instrument Repurchase Price Percentage Of Principle Amount					100.00%
Debt Instrument Convertible Effective Interest Rate One																						3.25%
Two Thousand Twelve Original Notes [Member] | Convertible Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage											2.00%											2.00%
Annual Yield To Maturity On Convertible Notes																						2.00%
Exceeds Percentage Of Accreted Principal Amount Of Original Notes																						120.00%
Exceeds Percentage Of Conversion Price Of Common Stock																						130.00%
Number Of Trading Days Considered For Average Closing Daily Prices Description																						During the five business day period after any five consecutive trading day period
Percentage To Compare Note Price To Product Of Common Stock And Conversion Rate																						98.00%
Principal Convertible To Common Stock																						$ 1,000,000
Two Thousand Twelve Original Notes [Member] | Convertible Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Number Of Trading Days																						20 days
Two Thousand Twelve Original Notes [Member] | Convertible Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Number Of Trading Days																						30 days
Due December Two Zero One Seven [Member] | Convertible Notes [Member] | Two Thousand Thirteen Original Notes [Member]
Debt Instrument [Line Items]
Annual Yield To Maturity On Convertible Notes																						4.00%
Thereafter [Member] | Convertible Notes [Member] | Two Thousand Thirteen Original Notes [Member]
Debt Instrument [Line Items]
Annual Yield To Maturity On Convertible Notes																						2.00%
Two Thousand Thirteen Original Notes [Member]
Debt Instrument [Line Items]
Maximum Range Of Present Value Of Cash Flow Percentage																						10.00%
Change In Fair Value Of Conversion Option Percentage																						10.00%
Two Thousand Thirteen Original Notes [Member] | Convertible Notes [Member]
Debt Instrument [Line Items]
Exceeds Percentage Of Conversion Price Of Common Stock																						130.00%
Number Of Trading Days Considered For Average Closing Daily Prices Description																						During the five business day period after any five consecutive trading day period
Percentage To Compare Note Price To Product Of Common Stock And Conversion Rate																						98.00%
Convertible Notes, Triggering Events											$ 0											$ 0
Debt Instrument Convertible Effective Interest Rate One																						5.42%
Gains Losses On Exchange Of Debt																						$ 0
Two Thousand Thirteen Original Notes [Member] | Convertible Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Number Of Trading Days																						20 days
Two Thousand Thirteen Original Notes [Member] | Convertible Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Number Of Trading Days																						30 days
February Fourteen Two Thousand And Thirteen Original Notes [Member] | Convertible Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							2.00%
Debt Instrument Maturity Period							2043
Notes principal amount							$ 370,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Aggregate redemption price																									1,030,000,000
Premium payment																									$ 31,250,000
Two Thousand Ten Original Notes [Member] | Convertible Notes [Member]
Debt Instrument [Line Items]
Debt extinguishment loss											$ (800,000.0)			(15,500,000.0)
Principle Convertible Debt Put During Period											$ 1,300,000.0
Debt Instrument, Interest Rate, Stated Percentage											2.00%											2.00%
Notes principal amount											$ 46,300,000.0			300,000,000.0								$ 46,300,000.0	300,000,000.0
Repayments of Convertible Debt											79,200,000.0			$ 543,700,000.0
Amount by which the if-converted value exceeds the principal amount											7,900,000.0											$ 7,900,000.0
Annual Yield To Maturity On Convertible Notes																						2.00%
Exceeds Percentage Of Accreted Principal Amount Of Original Notes																						120.00%
Conversion Of Notes Into Shares Conversion Price																						$ 23.03
Exceeds Percentage Of Conversion Price Of Common Stock																						130.00%
Convertible Notes Payable, Current											$ 12,200,000.0											$ 12,200,000.0
Number Of Trading Days Considered For Average Closing Daily Prices Description																						during the five business day period after any five consecutive trading day period
Percentage To Compare Note Price To Product Of Common Stock And Conversion Rate																						98.00%
Principal Convertible To Common Stock																						$ 1,000
Two Thousand Ten Original Notes [Member] | Convertible Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Number Of Trading Days											20 days											20 days
Two Thousand Ten Original Notes [Member] | Convertible Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Number Of Trading Days											30 days											30 days
Two Thousand Ten Original Notes [Member] | Convertible Notes Payable [Member]
Debt Instrument [Line Items]
Gains (Losses) on Recourse Debt																						$ 4,000,000
Repayments of Convertible Debt												$ 140,100,000
Conversion Of Notes Into Shares Conversion Price												$ 0
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt																						83,700,000
Write off of Deferred Debt Issuance Cost																						400,000
Allocated Third Party Costs																						200,000
Debt Instrument Nonconvertible Effective Interest Rate												2.71%
Deferred Taxes, Reacquisition of Equity Component																						15,700,000
Two Thousand Ten Original Notes [Member] | Convertible Notes Payable [Member]
Debt Instrument [Line Items]
Debt extinguishment loss																						$ (4,600,000)
Two Thousand And Twelve Notes [Member] | Convertible Notes [Member]
Debt Instrument [Line Items]
Conversion Of Notes Into Shares Conversion Price																						$ 31.175
Two Thousand And Twelve Notes [Member] | Convertible Notes Payable [Member]
Debt Instrument [Line Items]
Debt extinguishment loss																						$ (700,000)
Notes principal amount												$ 136,600,000
Repayments of Convertible Debt												$ 171,300,000
Conversion Of Notes Into Shares Conversion Price												$ 0
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt																						38,900,000
Write off of Deferred Debt Issuance Cost																						500,000
Allocated Third Party Costs																						200,000
Deferred Taxes, Reacquisition of Equity Component																						$ 12,500,000
Year Two Thousand Thirteen [Member] | Convertible Notes [Member]
Debt Instrument [Line Items]
Conversion Of Notes Into Shares Conversion Price																						$ 38.59
Other Current Assets [Member]
Debt Instrument [Line Items]
Debt Issuance Cost																							600,000
Debt [Member]
Debt Instrument [Line Items]
Debt Issuance Cost																							27,600,000
Other Noncurrent Assets [Member]
Debt Instrument [Line Items]
Debt Issuance Cost																							$ 27,000,000
First Valuation Date [Member] | Two Thousand And Twelve Notes [Member] | Convertible Notes Payable [Member]
Debt Instrument [Line Items]
Debt Instrument Nonconvertible Effective Interest Rate												3.87%
Second Valuation Date [Member] | Two Thousand And Twelve Notes [Member] | Convertible Notes Payable [Member]
Debt Instrument [Line Items]
Debt Instrument Nonconvertible Effective Interest Rate												3.41%
Subsequent Event [Member]
Debt Instrument [Line Items]
Redemption Price As Percentage Of Principal Amount Plus Accrued And Unpaid Interest	100.00%

XML

Borrowings and Credit Arrangements - Convertible Notes and Related Equity Components (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015
Two Thousand And Ten Notes [Member]
Schedule Of Borrowings [Line Items]
Debt Instrument, Face Amount	$ 12.3	$ 150.0
Unamortized discount and issuance costs (1)	(0.1)	(8.2)
Convertible Notes Payable	12.2	141.8
Debt Instrument, Convertible, Carrying Amount of Equity Component	1.6	20.0
Two Thousand And Twelve Notes [Member]
Schedule Of Borrowings [Line Items]
Debt Instrument, Face Amount	363.4	500.0
Unamortized discount and issuance costs (1)	(9.5)	(21.8)
Convertible Notes Payable	353.9	478.2
Debt Instrument, Convertible, Carrying Amount of Equity Component	35.8	49.2
Two Thousand And Thirteen Notes [Member]
Schedule Of Borrowings [Line Items]
Debt Instrument, Face Amount	370.0	370.0
Unamortized discount and issuance costs (1)	(17.5)	(29.9)
Convertible Notes Payable	409.6	380.6
Debt Instrument, Convertible, Carrying Amount of Equity Component	131.5	131.5
Base Principal Amount For Accretion Value	$ 57.1	$ 40.5

XML

Borrowings and Credit Arrangements - Interest Expense under Convertible Notes (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Debt Conversion [Line Items]
Non-cash interest expense	$ 52.1	$ 63.8	$ 68.7
Convertible Notes Payable [Member]
Debt Conversion [Line Items]
Amortization of debt discount	22.3	34.9	37.1
Amortization of deferred financing costs	1.1	1.7	1.9
Principal accretion	16.6	15.9	15.3
Non-cash interest expense	40.0	52.5	54.3
2.00% accrued interest	10.0	18.2	22.3
Interest expense, net	$ 50.0	$ 70.7	$ 76.6
Percentage of accrued interest on Convertible Notes	2.00%	2.00%

XML

Fair Value Measurements - Fair Value Assets and Liabilities Measured on Recurring Basis (Detail) - USD ($) $ in Millions	Sep. 24, 2016	Sep. 26, 2015
Assets:
Assets measured at fair value on a recurring basis	$ 2.6	$ 27.7
Liabilities:
Liabilities measured at fair value on a recurring basis	38.3	29.4
Equity Securities [Member]
Assets:
Assets measured at fair value on a recurring basis	1.0	15.2
Mutual Funds [Member]
Assets:
Assets measured at fair value on a recurring basis		5.6
Interest Rate Cap [Member]
Assets:
Interest Rate Cash Flow Hedge Asset at Fair Value	1.4	6.9
Deferred Compensation Liabilities [Member]
Liabilities:
Liabilities measured at fair value on a recurring basis	37.0	29.4
Quoted Prices in Active Market for Identical Assets (Level 1) [Member]
Assets:
Assets measured at fair value on a recurring basis	1.0	20.8
Liabilities:
Liabilities measured at fair value on a recurring basis	37.0	29.4
Quoted Prices in Active Market for Identical Assets (Level 1) [Member] | Equity Securities [Member]
Assets:
Assets measured at fair value on a recurring basis	1.0	15.2
Quoted Prices in Active Market for Identical Assets (Level 1) [Member] | Mutual Funds [Member]
Assets:
Assets measured at fair value on a recurring basis		5.6
Quoted Prices in Active Market for Identical Assets (Level 1) [Member] | Interest Rate Cap [Member]
Assets:
Interest Rate Cash Flow Hedge Asset at Fair Value	0.0	0.0
Quoted Prices in Active Market for Identical Assets (Level 1) [Member] | Deferred Compensation Liabilities [Member]
Liabilities:
Liabilities measured at fair value on a recurring basis	37.0	29.4
Fair Value, Inputs, Level 2 [Member]
Assets:
Assets measured at fair value on a recurring basis	1.6	6.9
Liabilities:
Liabilities measured at fair value on a recurring basis	1.3	0.0
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]
Assets:
Assets measured at fair value on a recurring basis	0.0	0.0
Fair Value, Inputs, Level 2 [Member] | Mutual Funds [Member]
Assets:
Assets measured at fair value on a recurring basis		0.0
Fair Value, Inputs, Level 2 [Member] | Interest Rate Cap [Member]
Assets:
Interest Rate Cash Flow Hedge Asset at Fair Value	1.4	6.9
Fair Value, Inputs, Level 2 [Member] | Deferred Compensation Liabilities [Member]
Liabilities:
Liabilities measured at fair value on a recurring basis	0.0	0.0
Fair Value, Inputs, Level 3 [Member]
Assets:
Assets measured at fair value on a recurring basis	0.0	0.0
Liabilities:
Liabilities measured at fair value on a recurring basis	0.0	0.0
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]
Assets:
Assets measured at fair value on a recurring basis	0.0	0.0
Fair Value, Inputs, Level 3 [Member] | Mutual Funds [Member]
Assets:
Assets measured at fair value on a recurring basis		0.0
Fair Value, Inputs, Level 3 [Member] | Interest Rate Cap [Member]
Assets:
Interest Rate Cash Flow Hedge Asset at Fair Value	0.0	0.0
Fair Value, Inputs, Level 3 [Member] | Deferred Compensation Liabilities [Member]
Liabilities:
Liabilities measured at fair value on a recurring basis	0.0	$ 0.0
Assets [Member] | Foreign Exchange Forward [Member]
Assets:
Foreign Currency Contract, Asset, Fair Value Disclosure	0.2
Assets [Member] | Quoted Prices in Active Market for Identical Assets (Level 1) [Member] | Foreign Exchange Forward [Member]
Assets:
Foreign Currency Contract, Asset, Fair Value Disclosure	0.0
Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign Exchange Forward [Member]
Assets:
Foreign Currency Contract, Asset, Fair Value Disclosure	0.2
Assets [Member] | Fair Value, Inputs, Level 3 [Member] | Foreign Exchange Forward [Member]
Assets:
Foreign Currency Contract, Asset, Fair Value Disclosure	0.0
Liability [Member] | Foreign Exchange Forward [Member]
Liabilities:
Liabilities measured at fair value on a recurring basis	1.3
Liability [Member] | Quoted Prices in Active Market for Identical Assets (Level 1) [Member] | Foreign Exchange Forward [Member]
Liabilities:
Liabilities measured at fair value on a recurring basis	0.0
Liability [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign Exchange Forward [Member]
Liabilities:
Liabilities measured at fair value on a recurring basis	1.3
Liability [Member] | Fair Value, Inputs, Level 3 [Member] | Foreign Exchange Forward [Member]
Liabilities:
Liabilities measured at fair value on a recurring basis	$ 0.0

XML

Fair Value Measurements - Changes in Fair Value of Recurring Fair Value Measurements Using Significant Unobservable Inputs (Level 3), Consisting of Contingent Consideration Liabilities (Detail) $ in Millions	12 Months Ended
	Sep. 27, 2014 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 3.8
Payments / Accruals	(3.8)
Balance at end of period	$ 0.0

XML

Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Sep. 26, 2015	Mar. 29, 2014	Dec. 28, 2013	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014	Aug. 01, 2012
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Investments, Fair Value Disclosure	$ 27.7			$ 2.6	$ 27.7
Impairment charge		$ 28.6
Impairment charge allocated to intangible assets		27.1
Non-cash impairment charges				0.0	0.0	$ 38.4
Asset impairment charge			$ 3.1
Cost-method equity investments in non-publicly traded securities	4.2			3.5	4.2
Other-than-temporary impairment charges						$ 6.9
Borrowed principal under credit agreement				1,000.0
Property, Plant and Equipment [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Non-cash impairment charges		$ 1.5
Credit Agreement [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Borrowed principal under credit agreement				1,410.0			$ 2,500.0
Accounts Receivable Securitization [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Borrowed principal under credit agreement				200.0
Senior Notes [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair value of debt instrument	1,030.0			1,060.0	1,030.0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Investments, Fair Value Disclosure	0.0			$ 0.0	$ 0.0
Diagnostics [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Non-cash impairment charges	$ 5.1

XML

Fair Value Measurements - Schedule of Estimated Fair Value of Assets Measured on a Nonrecurring Basis (Detail) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 29, 2014	Dec. 28, 2013	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Intangible asset, Total Losses	$ (27.1)
Total Losses		$ (3.1)
Cost-method equity investments, Total Losses			$ (1.1)	$ (7.8)	$ (6.9)
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Intangible assets					36.2
Intangible asset, Total Losses					(32.2)
Cost-method equity investments					0.8
Cost-method equity investments, Total Losses					(6.9)
Total Losses					(43.7)
Fair Value, Measurements, Nonrecurring [Member] | Quoted Prices in Active Market for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Intangible assets					0.0
Cost-method equity investments					0.0
Fair Value, Measurements, Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Intangible assets					0.0
Cost-method equity investments					0.0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Intangible assets					36.2
Cost-method equity investments					0.8
Fair Value, Measurements, Nonrecurring [Member] | Property, Plant and Equipment [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value					1.0
Total Losses					(1.5)
Fair Value, Measurements, Nonrecurring [Member] | Property, Plant and Equipment [Member] | Quoted Prices in Active Market for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value					0.0
Fair Value, Measurements, Nonrecurring [Member] | Property, Plant and Equipment [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value					0.0
Fair Value, Measurements, Nonrecurring [Member] | Property, Plant and Equipment [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value					1.0
Fair Value, Measurements, Nonrecurring [Member] | Buildings [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value					1.4
Total Losses					(3.1)
Fair Value, Measurements, Nonrecurring [Member] | Buildings [Member] | Quoted Prices in Active Market for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value					0.0
Fair Value, Measurements, Nonrecurring [Member] | Buildings [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value					0.0
Fair Value, Measurements, Nonrecurring [Member] | Buildings [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value					$ 1.4

XML

Fair Value Measurements - Estimated Fair Values of Convertible Notes (Detail) - USD ($) $ in Millions	Sep. 24, 2016	Sep. 26, 2015
Estimated Fair Value Of Financial Instruments [Line Items]
Estimated fair values of debt instruments	$ 960.9	$ 1,424.1
2010 Notes [Member]
Estimated Fair Value Of Financial Instruments [Line Items]
Estimated fair values of debt instruments	20.2	264.1
2012 Notes [Member]
Estimated Fair Value Of Financial Instruments [Line Items]
Estimated fair values of debt instruments	481.9	688.2
2013 Notes [Member]
Estimated Fair Value Of Financial Instruments [Line Items]
Estimated fair values of debt instruments	$ 458.8	$ 471.8

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Income Taxes - Income (Loss) Before Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Income Tax Disclosure [Abstract]
Domestic	$ 310.7	$ 158.3	$ 95.1
Foreign	104.6	18.9	(47.0)
Income before income taxes	$ 415.3	$ 177.2	$ 48.1

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Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Federal:
Current	$ 209.0	$ 185.2	$ 242.2
Deferred	(122.7)	(137.0)	(212.5)
Federal, Total	86.3	48.2	29.7
State:
Current	16.6	3.5	22.1
Deferred	(22.7)	(11.0)	(24.7)
State, Total	(6.1)	(7.5)	(2.6)
Foreign:
Current	14.7	5.7	9.6
Deferred	(10.4)	(0.8)	(5.9)
Foreign, Total	4.3	4.9	3.7
Provision for income taxes	$ 84.5	$ 45.6	$ 30.8

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Income Taxes - Reconciliation of Income Tax (Benefit) at U.S. Federal Statutory Rate to Company's Effective Tax Rate (Detail) - USD ($)	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Income Tax Disclosure [Abstract]
Income tax provision at federal statutory rate	35.00%	35.00%	35.00%
Increase (decrease) in tax resulting from:
Domestic production activities deduction	(5.00%)	(10.10%)	(30.60%)
State income taxes, net of federal benefit	2.00%	1.20%	4.30%
Tax credits	(3.20%)	(3.80%)	(5.20%)
Unrecognized tax benefits	2.40%	(1.80%)	2.50%
Cumulative translation adjustment write-off	0.00%	1.90%	0.00%
Non-deductible compensation	0.10%	1.90%	5.50%
Foreign rate differential	(6.10%)	(1.60%)	10.70%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	$ (0.018)	$ 0.000	$ 0.000
Change in valuation allowance	(3.40%)	1.00%	35.40%
Other	0.30%	2.10%	6.30%
Effective income tax rate	20.30%	25.80%	63.90%

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Income Taxes - Significant Components of Company's Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Sep. 24, 2016	Sep. 26, 2015
Deferred tax assets
Net operating loss carryforwards	$ 40.0	$ 45.4
Capital losses	19.1	25.7
Non-deductible accruals	21.1	16.3
Non-deductible reserves	31.1	26.8
Stock-based compensation	34.8	24.3
Research and other credits	10.7	14.5
Nonqualified deferred compensation plan	14.1	11.3
Other temporary differences	9.2	10.2
Deferred tax assets, gross	180.1	174.5
Less: valuation allowance	(46.2)	(60.9)
Deferred tax assets, net	133.9	113.6
Deferred tax liabilities
Depreciation and amortization	(1,030.8)	(1,171.5)
Debt discounts and deferrals	(75.1)	(100.1)
Deferred Tax Liabilities, Deferred Expense, Deferred Financing Costs	1.3	1.4
Deferred tax liabilities, net	(1,107.2)	(1,273.0)
Net deferred tax liabilities	$ (973.3)	$ (1,159.4)

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Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015
Income Taxes [Line Items]
Decrease in valuation allowance	$ 14,700,000
Federal net operating loss expected to be expired unutilized	4,500,000
State net operating loss expected to be expired unutilized	151,300,000
Foreign net operating loss expected to be expired unutilized	46,500,000
Gross unrecognized tax benefits, excluding interest	163,600,000	$ 154,700,000
Unrecognized tax benefit that would impact effective tax rate	80,100,000	74,900,000
Interest accrued on unrecognized tax benefits	13,100,000	$ 9,900,000
Unrecognized Tax Benefits, Income Tax Penalties Accrued	0
Unremitted foreign earnings	187,600,000
Net Operating Losses Carryforwards [Member]
Income Taxes [Line Items]
Amount with unlimited carry forward periods	44,600,000
Tax Credit Carryforward [Member]
Income Taxes [Line Items]
Amount with unlimited carry forward periods	8,900,000
Maximum [Member]
Income Taxes [Line Items]
Decrease in Unrecognized Tax Benefits is Reasonably Possible	1,000,000
Domestic Tax Authority [Member]
Income Taxes [Line Items]
Net operating losses	13,900,000
Credit carry forwards	300,000
State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Net operating losses	63,900,000
Credit carry forwards	13,700,000
Foreign Tax Authority [Member]
Income Taxes [Line Items]
Net operating losses	45,000,000
Credit carry forwards	$ 1,600,000

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Income Taxes - Activity of Company's Unrecognized Income Tax Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015
Income Tax Disclosure [Abstract]
Balance at beginning of fiscal year	$ 154.7	$ 137.0
Tax positions related to current year:
Additions	23.9	11.0
Reductions	0.0	0.0
Tax positions related to prior years:
Additions related to change in estimate	1.1	21.1
Reductions	(6.9)	(10.3)
Payments	(6.0)	(0.8)
Lapses in statutes of limitations and settlements	(3.2)	(3.7)
Acquired tax positions:
Additions related to reserves acquired from acquisitions	0.0	0.4
Balance as of the end of the fiscal year	$ 163.6	$ 154.7

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Stockholders' Equity and Stock-Based Compensation - Additional Information (Detail) $ / shares in Units, shares in Millions, $ in Millions		1 Months Ended		12 Months Ended
	Jun. 21, 2016	Dec. 31, 2013 tranche $ / shares shares	Mar. 31, 2012 shares	Sep. 24, 2016 USD ($) $ / shares shares	Sep. 26, 2015 USD ($) $ / shares shares	Sep. 27, 2014 USD ($)	Nov. 11, 2013 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market stock units granted during the period | shares		0.1
Share Based Compensation Arrangement By Share Based Payment Award Number Of Tranches | tranche		3
Percentage Of Award Vested Upon Meeting Defined Market Based Criteria		33.33%
Share Based Compensation Arrangement By Share Based Payment Award Trading Period Considered For Determination Of Average Price		30 days
Valuation of MSUs using Monte Carlo simulation model | $ / shares		$ 18.65
Share Based Compensation Arrangement Restricted Stock Units Liability Award | shares		0.2
Common Stock Purchased By Employee | shares		0.2
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Share-based Liabilities Paid				$ 7.8
Stock-based compensation, period of vest term granted to employees, years				3 years
Stock Modification Expense				$ 4.0
Tax benefit related to stock based compensation				23.1	$ 17.7	$ 15.3
Expense related to the acceleration of vesting for certain options assumed in acquisition				0.4	4.1	6.6
Intrinsic value of option exercised				$ 21.6	42.0	34.7
Granted | shares				1.0
Minimum eligible percentage to receive target number of shares of company's common stock				0.00%
Maximum eligible percentage to receive target number of shares of company's common stock				200.00%
Stock-based compensation expense				$ 65.4	59.3	50.0
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense				10.9	12.2	16.3
Unrecognized compensation expense				$ 21.2
Weighted average period of unrecognized stock-based compensation, years				2 years 9 months 22 days
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shared Based Compensation Arrangement Restricted Stock Vesting Period		3 years
Stock-based compensation expense				$ 50.5	43.7	30.6
Unrecognized compensation expense				$ 66.6
Weighted average period of unrecognized stock-based compensation, years				1 year 11 months 27 days
Fair value of RSUs vested				$ 28.4	$ 27.2	22.6
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted | shares				0.2	0.3
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Weighted Average Grant Date Fair Value | $ / shares				$ 39.72	$ 26.58
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of forfeiture rates				0.00%
Minimum [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, period of vest term granted to employees, years				4 years
Percentage of vesting for stock options granted to employees				25.00%
Minimum [Member] | Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, period of vest term granted to employees, years				3 years
Percentage of vesting for RSUs granted to employees				25.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of forfeiture rates				7.00%
Maximum [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, period of vest term granted to employees, years				5 years
Percentage of vesting for stock options granted to employees				20.00%
Maximum [Member] | Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation, period of vest term granted to employees, years				4 years
Percentage of vesting for RSUs granted to employees				33.00%
2008 Equity Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized | shares				31.5
Shares available for grant | shares				8.3
2012 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares that may be issued under Employee Stock Purchase Plan | shares			2.5
Percentage of common stock price for ESPP			85.00%
Stock-based compensation expense				$ 4.0	$ 3.4	$ 3.1
Nov 11, 2013 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized value of common shares to be repurchased							$ 250.0
Period available for common stock to be repurchased				3 years
Treasury Stock, Shares, Acquired | shares				7.3
Stock Repurchased During Period, Total Consideration				$ 250.0
Jun 21 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period available for common stock to be repurchased				5 years
Treasury Stock, Shares, Acquired | shares				0.0
Treasury Stock Acquired, Repurchase Authorization	500

XML

Stockholders' Equity and Stock-Based Compensation - Stock-Based Compensation Expense in Consolidated Statement of Operations (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 65.4	$ 59.3	$ 50.0
Cost of Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	10.5	8.7	7.3
Research and Development Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	10.8	8.6	8.4
Selling and Marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	10.9	8.8	8.2
General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	32.8	29.1	19.5
Restructuring Charges [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 0.4	$ 4.1	$ 6.6

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Stockholders' Equity and Stock-Based Compensation - Information Pertaining to Stock Options Granted and Related Assumptions (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	1.1	1.3	2.4
Weighted-average exercise price	$ 39.32	$ 27.68	$ 22.01
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value	$ 12,910.00	$ 10,000	$ 7,700
Assumptions:
Risk-free interest rates	1.60%	1.70%	1.20%
Expected life (in years)	4 years 8 months 15 days	5 years 4 months 6 days	4 years 4 months 24 days
Expected volatility	37.80%	38.60%	41.40%
Dividend yield	$ 0.0	$ 0.0	$ 0.0

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Stockholders' Equity and Stock-Based Compensation - Stock Option Activity (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Number of Shares (in millions)
Options outstanding at September 26, 2015	6.7
Granted	1.1	1.3	2.4
Canceled/ forfeited	(0.5)
Exercised	(1.2)
Options outstanding at September 24, 2016	6.1	6.7
Options exercisable at September 24, 2016	3.0
Options vested and expected to vest at September 24, 2016 (1)	5.9
Weighted- Average Exercise Price
Options outstanding at September 26, 2015	$ 22.21
Granted	39.32	$ 27.68	$ 22.01
Canceled/ forfeited	27.00
Exercised	19.55
Options outstanding at September 24, 2016	25.37	$ 22.21
Options exercisable at September 24, 2016	21.95
Options vested and expected to vest at September 24, 2016 (1)	$ 25.32
Weighted- Average Remaining Contractual Life (in Years)
Options outstanding at September 26, 2015	4 years 11 months 11 days	4 years 10 months 12 days
Options exercisable at September 24, 2016	3 years 1 month 12 days
Options vested and expected to vest at September 24, 2016 (1)	4 years 10 months 29 days
Options outstanding at September 24, 2016	4 years 11 months 11 days	4 years 10 months 12 days
Aggregate Intrinsic Value (in millions)
Options outstanding at September 26, 2015	$ 119.1
Exercised	21.6	$ 42.0	$ 34.7
Options outstanding at September 24, 2016	80.1	$ 119.1
Options exercisable at September 24, 2016	48.8
Options vested and expected to vest at September 24, 2016 (1)	$ 79.0

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Stockholders' Equity and Stock-Based Compensation - Restricted Stock Unit Activity (Detail) shares in Millions	12 Months Ended
	Sep. 24, 2016 $ / shares shares
Number of Shares (in millions)
Non-vested at September 26, 2015 | shares	3.7
Granted | shares	1.0
Vested | shares	(1.2)
Forfeited | shares	(0.4)
Non-vested at September 24, 2016 | shares	3.1
Weighted-Average Grant-Date Fair Value
Non-vested at September 26, 2015 | $ / shares	$ 24.54
Granted | $ / shares	39.38
Vested | $ / shares	22.96
Forfeited | $ / shares	25.74
Non-vested at September 24, 2016 | $ / shares	$ 29.98

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Stockholders' Equity and Stock-Based Compensation - Assumptions to Value Stock Options (Detail) - USD ($)	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Assumptions:
Risk-free interest rates	1.60%	1.70%	1.20%
Expected life (in years)	4 years 8 months 15 days	5 years 4 months 6 days	4 years 4 months 24 days
Expected volatility	37.80%	38.60%	41.40%
Dividend yield	$ 0	$ 0	$ 0
Employee stock purchase plan [Member]
Assumptions:
Risk-free interest rates	0.34%	0.10%	0.08%
Expected life (in years)	6 months	6 months	6 months
Expected volatility	27.20%	27.40%	30.00%
Dividend yield	$ 0	$ 0	$ 0

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Profit Sharing 401(k) Plan - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]
Contributions made by company	$ 16.2	$ 14.4	$ 13.3

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Nonqualified Deferred Compensation Plan - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Mutual funds	$ 0.0	$ 5.6
Gen-Probe Incorporated [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Compensation expense for the DCP discretionary contributions	$ 37.0	29.4
Nonqualified Deferred Compensation Plan [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Maximum employee contributions from base salary, percentage	75.00%
Maximum employee contributions from annual bonus, percentage	100.00%
Employee contributions vested, percentage	100.00%
Contributions, vesting period, years	3 years
Compensation expense for the DCP discretionary contributions	$ 3.1	1.8	$ 3.7
Investment in group life insurance contracts	$ 36.0	$ 27.5

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Commitments and Contingencies - Additional Information (Detail) $ in Millions	12 Months Ended
	Sep. 24, 2016 USD ($) Lease term	Sep. 26, 2015 USD ($)	Sep. 27, 2014 USD ($)
Contingent Consideration Earn-Out Payments [Line Items]
Accrued expenses	$ 287.6	$ 272.1
Operating Lease Expiration Year	2035
Rent Expense Net Of Sublease Income	$ 17.9	19.2	$ 21.1
Operating Leases, Rent Expense, Sublease Rentals	$ 2.4	$ 2.0	$ 1.8
Minimum [Member]
Contingent Consideration Earn-Out Payments [Line Items]
Royalty Based On Revenue Lower Range Percentage	1.00%
Maximum [Member]
Contingent Consideration Earn-Out Payments [Line Items]
Royalty Based On Revenue Upper Range Percentage	35.00%
Finance Leases [Member]
Contingent Consideration Earn-Out Payments [Line Items]
Number Of Finance Leases | Lease	2
Property, Plant, and Equipment, Fair Value Disclosure	$ 28.3
Finance Lease Extension Executed	1
Finance Lease Expiration Year	2024
Accrued expenses	$ 2.9
Accrued lease obligation-long-term	$ 34.8
Optional Lease Extension Period	10 years
Number Of Optional Lease Extensions | term	2
Lease Extension Period	5 years
Finance Lease 2 [Member]
Contingent Consideration Earn-Out Payments [Line Items]
Optional Lease Extension Period	8 years
Number Of Optional Lease Extensions | term	1
Lease Extension Period	5 years
Finance Leases [Member] | Leasehold Improvements [Member]
Contingent Consideration Earn-Out Payments [Line Items]
Property, Plant and Equipment, Useful Life	35 years

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Commitments and Contingencies - Future Minimum Lease Payments, Including Principal and Interest (Details) $ in Millions	Sep. 24, 2016 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Fiscal 2017	$ 3.1
Fiscal 2018	2.9
Fiscal 2019	1.2
Fiscal 2020	1.2
Fiscal 2021	1.2
Thereafter	2.8
Total minimum payments	12.4
Less-amount representing interest	(3.9)
Future minimum lease payments less interest	$ 8.5

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Commitments and Contingencies - Summary of Purchase Commitments (Details) $ in Millions	Sep. 24, 2016 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Fiscal 2017	$ 58.5
Fiscal 2018	15.6
Fiscal 2019	13.0
Total	$ 87.1

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Commitments and Contingencies - Summary of Minimum Royalty Commitments (Details) $ in Millions	Sep. 24, 2016 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Fiscal 2017	$ 0.7
Fiscal 2018	0.7
Fiscal 2019	0.5
Fiscal 2020	0.5
Fiscal 2021	0.5
Thereafter	2.7
Total	$ 5.6

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Commitments and Contingencies - Future Minimum Lease Payments Under All Operating Leases (Details) $ in Millions	Sep. 24, 2016 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Fiscal 2017	$ 17.3
Fiscal 2018	15.5
Fiscal 2019	10.5
Fiscal 2020	8.3
Fiscal 2021	6.6
Thereafter	14.3
Total	$ 72.5

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Commitments and Contingencies - Future Minimum Annual Rental Income Payments Under Sublease Agreements (Details) $ in Millions	Sep. 24, 2016 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Fiscal 2017	$ 2.3
Fiscal 2018	2.2
Fiscal 2019	2.1
Fiscal 2020	1.3
Fiscal 2021	0.3
Thereafter	0.9
Total	$ 9.1

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Litigation and Other Matters - Additional Information (Detail) $ in Millions	Sep. 04, 2012 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Assessed damages	$ 4.0

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Grifols Collaboration Agreement - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jul. 31, 2009	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Collaboration agreements revenue		$ 235.4	$ 253.1	$ 223.3
Blood screening [Member] | Grifols [Member] | Collaboration Agreement [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Manufacturing costs entitled to recover	50.00%
Share of Revenue from Any Assay	50.00%

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Business Segments and Geographic Information - Additional Information (Detail)	3 Months Ended								12 Months Ended
	Sep. 24, 2016 USD ($)	Jun. 25, 2016 USD ($)	Mar. 26, 2016 USD ($)	Dec. 26, 2015 USD ($)	Sep. 26, 2015 USD ($)	Jun. 27, 2015 USD ($)	Mar. 28, 2015 USD ($)	Dec. 27, 2014 USD ($)	Sep. 24, 2016 USD ($) Segment	Sep. 26, 2015 USD ($)	Sep. 27, 2014 USD ($)
Segment Reporting Disclosure [Line Items]
Number of reportable segments | Segment									4
Revenues	$ 726,800,000	$ 717,400,000	$ 693,300,000	$ 695,200,000	$ 702,800,000	$ 693,900,000	$ 655,500,000	$ 652,800,000	$ 2,832,700,000	$ 2,705,000,000	$ 2,530,700,000
Intersegment [Member]
Segment Reporting Disclosure [Line Items]
Revenues									0	0	0
Diagnostics [Member]
Segment Reporting Disclosure [Line Items]
Revenues									$ 1,236,900,000	$ 1,211,800,000	$ 1,186,800,000

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Business Segments and Geographic Information - Segment Information (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Sep. 24, 2016	Jun. 25, 2016	Mar. 26, 2016	Dec. 26, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 27, 2014	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Segment Reporting Information [Line Items]
Total revenues	$ 726.8	$ 717.4	$ 693.3	$ 695.2	$ 702.8	$ 693.9	$ 655.5	$ 652.8	$ 2,832.7	$ 2,705.0	$ 2,530.7
Operating income (loss)									548.6	455.1	279.7
Depreciation and amortization									465.4	491.4	523.2
Capital expenditures									94.5	89.4	80.2
Identifiable assets	7,317.0				7,642.5				7,317.0	7,642.5	8,368.7
Diagnostics [Member]
Segment Reporting Information [Line Items]
Total revenues									1,236.9	1,211.8	1,186.8
Operating income (loss)									126.0	109.5	48.7
Depreciation and amortization									341.8	358.7	376.0
Capital expenditures									53.5	55.6	52.2
Identifiable assets	3,771.9				4,055.8				3,771.9	4,055.8	4,383.5
Breast Health [Member]
Segment Reporting Information [Line Items]
Total revenues									1,112.8	1,063.4	944.7
Operating income (loss)									350.5	296.3	187.6
Depreciation and amortization									22.6	28.6	41.7
Capital expenditures									10.6	12.8	10.0
Identifiable assets	809.1				815.4				809.1	815.4	859.8
GYN Surgical [Member]
Segment Reporting Information [Line Items]
Total revenues									393.1	335.8	307.9
Operating income (loss)									69.1	38.6	30.3
Depreciation and amortization									99.9	102.7	104.6
Capital expenditures									17.7	9.5	8.0
Identifiable assets	1,570.7				1,658.1				1,570.7	1,658.1	1,748.2
Skeletal Health [Member]
Segment Reporting Information [Line Items]
Total revenues									89.9	94.0	91.3
Operating income (loss)									3.0	10.7	13.1
Depreciation and amortization									1.1	1.4	0.9
Capital expenditures									0.4	0.4	0.4
Identifiable assets	30.9				25.3				30.9	25.3	26.1
Corporate [Member]
Segment Reporting Information [Line Items]
Capital expenditures									12.3	11.1	9.6
Identifiable assets	$ 1,134.4				$ 1,087.9				$ 1,134.4	$ 1,087.9	$ 1,351.1

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Business Segments and Geographic Information - Revenues by Geography (Detail)	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Schedule Of Geographical Segments [Line Items]
Revenues	100.00%	100.00%	100.00%
United States [Member]
Schedule Of Geographical Segments [Line Items]
Revenues	78.90%	76.00%	75.10%
Europe [Member]
Schedule Of Geographical Segments [Line Items]
Revenues	10.20%	11.80%	13.30%
Asia-Pacific [Member]
Schedule Of Geographical Segments [Line Items]
Revenues	7.60%	8.50%	7.70%
All Others [Member]
Schedule Of Geographical Segments [Line Items]
Revenues	3.30%	3.70%	3.90%

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Business Segments and Geographic Information - Schedule of Geographically Located Property and Equipment, Net (Details) - USD ($) $ in Millions	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Geographic Information For Property Plant And Equipment [Line Items]
Property, plant and equipment, net	$ 460.2	$ 457.1	$ 461.9
United States [Member]
Geographic Information For Property Plant And Equipment [Line Items]
Property, plant and equipment, net	370.7	369.1	366.8
Costa Rica [Member]
Geographic Information For Property Plant And Equipment [Line Items]
Property, plant and equipment, net	28.1	27.7	27.9
Europe [Member]
Geographic Information For Property Plant And Equipment [Line Items]
Property, plant and equipment, net	49.2	50.8	56.0
All Other Countries [Member]
Geographic Information For Property Plant And Equipment [Line Items]
Property, plant and equipment, net	$ 12.2	$ 9.5	$ 11.2

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Accrued Expenses and Other Long-Term Liabilities - Schedule of Accrued Expenses (Detail) - USD ($) $ in Millions	Sep. 24, 2016	Sep. 26, 2015
Accrued Expenses
Compensation and employee benefits	$ 176.4	$ 173.2
Interest	11.7	14.6
Income and other taxes	38.4	13.3
Other	61.1	71.0
Total	$ 287.6	$ 272.1

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Accrued Expenses and Other Long-Term Liabilities - Schedule of Other Long-Term Liabilities (Detail) - USD ($) $ in Millions	Sep. 24, 2016	Sep. 26, 2015
Other Long-Term Liabilities
Reserve for income tax uncertainties	$ 167.6	$ 145.1
Accrued lease obligation-long-term	34.8	34.0
Pension liabilities	11.2	10.1
Other	10.9	11.7
Total	$ 224.5	$ 200.9

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Pension and Other Employee Benefits - Additional Information (Detail) - USD ($) $ in Millions	Sep. 24, 2016	Sep. 26, 2015
Other Liabilities Disclosure [Abstract]
Defined Benefit Pension Plan, Liabilities	$ (11.0)	$ (10.0)
Projected benefit obligations in excess of plan assets	(11.0)	(10.0)
Accumulated benefit obligation	(11.0)	(10.0)
Projected benefit obligation for long-term service awards	$ 0.1	$ 0.1

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Pension and Other Employee Benefits - Schedule of Reconciliation of Benefit Obligations, Plan Assets Funded Status (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Other Liabilities Disclosure [Abstract]
Benefit obligation at beginning of year	$ (10.0)	$ (10.3)	$ (10.1)
Service cost	0.0	0.0	0.0
Interest cost	(0.2)	(0.3)	(0.3)
Plan participants' contributions	0.0	0.0	0.0
Actuarial (loss) gain	(1.2)	(0.9)	(0.8)
Foreign exchange gain (loss)	0.1	1.2	0.6
Benefits paid	0.3	0.3	0.3
Benefit obligation at end of year	(11.0)	(10.0)	(10.3)
Plan assets	0.0	0.0	0.0
Funded status	$ (11.0)	$ (10.0)	$ (10.3)

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Pension and Other Employee Benefits - Components of Net Periodic Benefit Cost and Related Actuarial Assumptions (Detail) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Other Liabilities Disclosure [Abstract]
Service cost	$ 0.0	$ 0.0	$ 0.0
Components of Net Periodic Benefit Cost, Interest cost	(0.4)	0.3	0.3
Expected return on plan assets	0.0	0.0	0.0
Amortization of prior service cost	0.0	0.0	0.0
Recognized net actuarial gain	0.2	0.0	0.0
Net periodic benefit cost	$ (0.2)	$ 0.3	$ 0.3

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Pension and Other Employee Benefits - Schedule of Weighted-Average Net Periodic Benefit Cost Assumptions (Detail)	12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Defined Benefit Plan, Assumptions Used in Calculations [Abstract]
Discount rate	1.30%	2.05%	2.95%
Expected return on plan assets	0.00%	0.00%	0.00%
Rate of compensation increase	0.00%	0.00%	0.00%

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Pension and Other Employee Benefits - Schedule of Expected Pension Benefit (Detail) $ in Millions	Sep. 24, 2016 USD ($)
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]
2017	$ 0.3
2018	0.3
2019	0.4
2020	0.4
2021	0.4
2022 to 2026	$ 2.0

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Quarterly Statement of Operations Information (Unaudited) - Summary of Quarterly Results of Operations (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended																12 Months Ended
	Sep. 24, 2016		Jun. 25, 2016		Mar. 26, 2016		Dec. 26, 2015		Sep. 26, 2015		Jun. 27, 2015		Mar. 28, 2015		Dec. 27, 2014		Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Quarterly Financial Information Disclosure [Abstract]
Restructuring and divestiture charges	$ 2.9				$ 3.8		$ 2.3		$ 6.5		$ 11.9				$ 8.0		$ 10.5	$ 28.5	$ 51.7
Total revenues	726.8		$ 717.4		693.3		695.2		702.8		693.9		$ 655.5		652.8		2,832.7	2,705.0	2,530.7
Gross profit	406.1		393.1		385.0		379.1		379.4		378.7		336.0		338.6		1,563.3	1,432.7	1,245.5
Net income	$ 92.2	[1]	$ 84.8	[1]	$ 68.9	[1]	$ 84.9	[1]	$ 25.2	[2]	$ 29.4	[2]	$ 47.8	[2]	$ 29.2	[2]	$ 330.8	$ 131.6	$ 17.3
Diluted net income (loss) per common share (in dollars per share)	$ 0.33		$ 0.30		$ 0.24		$ 0.29		$ 0.09		$ 0.10		$ 0.17		$ 0.10		$ 1.16	$ 0.45	$ 0.06

[1] Net income in the first quarter of fiscal 2015 included restructuring charges of $8.0 million and a debt extinguishment loss of $6.7 million. Net income in the third quarter of fiscal 2015 included restructuring and divestiture charges of $11.9 million and a debt extinguishment loss of $18.2 million. Net income in the fourth quarter of fiscal 2015 included restructuring and divestiture charges of $6.5 million, a debt extinguishment loss of $37.8 million, and an other-than-temporary impairment charge of $7.8 million related to a marketable security.

[2] Net income in the first quarter of fiscal 2016 included restructuring charges of $2.3 million and a realized gain of $25.1 million related to the sale of all the shares in a marketable security investment. Net income in the second quarter of fiscal 2016 included restructuring charges of $3.8 million and a debt extinguishment loss of $4.5 million. Net income in the fourth quarter of fiscal 2016 included restructuring charges of $2.9 million, a debt extinguishment loss of $0.8 million, and an other-than-temporary impairment charge of $1.1 million related to a marketable security.

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Quarterly Statement of Operations Information (Unaudited) - Summary of Quarterly Results of Operations (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended						12 Months Ended
	Sep. 24, 2016	Mar. 26, 2016	Dec. 26, 2015	Sep. 26, 2015	Jun. 27, 2015	Dec. 27, 2014	Sep. 24, 2016	Sep. 26, 2015	Sep. 27, 2014
Quarterly Financial Information Disclosure [Abstract]
Restructuring charges	$ 2.9	$ 3.8	$ 2.3	$ 6.5	$ 11.9	$ 8.0	$ 10.5	$ 28.5	$ 51.7
Gain (Loss) on Sale of Investments			$ 25.1				25.1	0.0	0.0
Debt extinguishment loss	0.8	$ 4.5		(37.8)	$ 18.2	$ 6.7	$ 5.3	$ 62.7	$ 7.4
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	$ 1.1			$ 7.8