10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

_______________________________________________ 

FORM 10-K

(Mark One)

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

For the fiscal year ended September 28, 2014

OR

o 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 # 000-08866

_______________________________________________

MICROSEMI CORPORATION

(Exact name of Registrant as specified in its charter)

Delaware	95-2110371
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

One Enterprise, Aliso Viejo, California 92656

(Address of principal executive offices) (Zip Code)

(949) 380-6100

Registrant’s telephone number, including area code

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

Title of each class	Name of each exchange on which registered
Common Stock, $0.20 par value;	NASDAQ Stock Market LLC (NASDAQ Global Select Market)

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  x    No  o

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  o    No  x

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  x    No  o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, 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  x    No  o

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.  x

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 definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act. (Check one):

Large Accelerated Filer   x	Accelerated Filer  o
Non-Accelerated Filer  o	Smaller Reporting Company  o

(Do not check if a 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  o    No  x

The aggregate market value of Common Stock held by non-affiliates of the registrant, based upon the closing sale price on March 28, 2014 was approximately $2,326,000,000.

The number of outstanding shares of Common Stock on November 5, 2014 was 95,041,435

Documents Incorporated by Reference

Part III:    Incorporated by reference are portions of the definitive Proxy Statement for the Annual Meeting of Stockholders to be filed not later than 120 days after the close of the registrant’s fiscal year ended September 28, 2014.

TABLE OF CONTENTS

Item		Page
	PART I
1	Business	5
1A	Risk Factors	11
1B	Unresolved Staff Comments	25
2	Properties	25
3	Legal Proceedings	26
4	Mine Safety Disclosures	26
	PART II
5	Market for the Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	26
6	Selected Financial Data	28
7	Management’s Discussion and Analysis of Financial Condition and Results of Operations	28
7A.	Quantitative and Qualitative Disclosures About Market Risk	41
8	Financial Statements and Supplementary Data	43
9	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	70
9A.	Controls and Procedures	70
9B.	Other Information	71
	PART III
10	Directors, Executive Officers and Corporate Governance	71
11	Executive Compensation	71
12	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	71
13	Certain Relationships and Related Transactions, and Director Independence	71
14	Principal Accounting Fees and Services	71
	PART IV
15	Exhibits and Financial Statement Schedules	72

2

IMPORTANT FACTORS RELATED TO FORWARD-LOOKING STATEMENTS AND ASSOCIATED RISKS

This Annual Report on Form 10-K must be read in its entirety and contains forward-looking statements within the meaning of the federal securities laws. Any statements that do not relate to historical or current facts or matters are forward-looking statements. You can identify some of the forward-looking statements by the use of forward-looking words, such as "can," "may," "will," "could," "should," "project," "believe," "anticipate," "expect," "plan," "estimate," "forecast," "potential," "intend," "maintain," "continue" and variations of these words and comparable words. In addition, all of the information herein that does not state a historical fact is forward-looking, including any statement or implication about an estimate or a judgment, or an expectation as to a future time, future result or other future circumstance. Statements concerning current conditions may also be forward-looking if they imply a continuation of current conditions. Examples of forward-looking statements in this Annual Report on Form 10-K include, but are not limited to, statements concerning:     

• demand, growth and sales expectations for our products;

• expectations that plant consolidations will result in anticipated cost savings without unanticipated costs or expenses;

• expectations regarding tax exposures and future tax rates, our ability to realize deferred tax assets and the outcome or effects of examinations by U.S., state or foreign jurisdictions;

• expectations regarding competitive conditions;

• new market opportunities and emerging applications for our products;

• expectations concerning the anticipated benefits of our acquisitions;  

• expectations that we will be able to successfully integrate acquired companies and personnel with our existing operations;

• the uncertainty of litigation, administrative and similar matters, the associated costs and expenses, and the potential material adverse effect that these matters could have on our business and results of operations;

• beliefs that our customers will not cancel orders or terminate or renegotiate their purchasing relationships with us;

• expectations concerning the potential termination or renegotiation of U.S. government contracts, uncertainties of governmental appropriations and national defense policies and priorities and the effects of past or future government shutdowns and contract terminations or renegotiations on our business and results of operations;

• expectations that we will not suffer production delays as a result of a supplier's inability to supply parts;

• the effect of events such as natural disasters and related disruptions on our operations; 

• beliefs that we stock adequate supplies of all materials;

• beliefs that we will be able to successfully resolve any disputes and other business matters as anticipated;  

• beliefs that we will be able to meet our operating cash and capital commitment requirements in the foreseeable future;

• critical accounting estimates;

• expectations regarding our financial and operating results;

• expectations regarding our liquidity and capital resources, including our loan covenants;

3

• expectations regarding our performance and competitive position in future periods; and

• expectations regarding our outlook for our end markets.

Forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially from the results that the forward-looking statements suggest. You are urged to carefully review the disclosures we make in this report concerning risks and other factors that may affect our business and operating results, including those made under the heading "Item 1A. RISK FACTORS" included below in this Annual Report on Form 10-K, as well as in our other reports filed with the Securities and Exchange Commission ("SEC"). Forward-looking statements are not a guarantee of future performance and should not be regarded as a representation by us or any other person that all of our estimates will necessarily prove correct or that all of our objectives or plans will necessarily be achieved. You are cautioned, therefore, not to place undue reliance on these forward-looking statements, which are made only as of the date of this report. We do not intend, and undertake no obligation, to update or revise the forward-looking statements to reflect events or circumstances after the date of this report, whether as a result of new information, future events or otherwise.

4

PART I

ITEM 1. BUSINESS

INTRODUCTION

Microsemi Corporation was incorporated in Delaware in 1960. Unless the context otherwise requires, the "Company," "Microsemi," "we," "our," "ours" and "us" refer to Microsemi Corporation and its consolidated subsidiaries. The Company is publicly traded under the symbol "MSCC" on the Nasdaq Stock Market LLC. Our company headquarters are located at One Enterprise in Aliso Viejo, California 92656 and our telephone number is (949) 380-6100.

We are a leading designer, manufacturer and marketer of high-performance analog and mixed-signal semiconductor solutions differentiated by power, security, reliability and performance. We offer one of the industry's most comprehensive portfolios of semiconductor technology. Our products include high-performance and radiation-hardened analog mixed-signal integrated circuits ("ICs"), field programmable gate arrays ("FPGAs"), system on chip solutions ("SoCs") and application-specific integrated circuits ("ASICs"); power management products; timing and synchronization devices and precise time solutions, setting the world's standard for time; voice processing devices; radio frequency ("RF") solutions; discrete components; security technologies and scalable anti-tamper products; Power-over-Ethernet ("PoE") ICsand midspans; as well as custom design capabilities and services.

The principal end markets that we serve include Aerospace, Communications, Defense & Security, and Industrial. Today, Microsemi products are found in applications such as: communications infrastructure systems, both wireless and wired LAN systems, implantable pacemakers and defibrillators, missile systems, military and commercial satellites and aircrafts, oil field equipment and airport security systems.

 Our website address is http://www.microsemi.com. Our filings with the SEC of annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K, and all amendments to such forms, are made accessible on such website as soon as reasonably practicable after such documents are electronically filed with or furnished to the SEC and are always available free of charge. Additionally, the SEC maintains a website that contains reports, proxy and information statements, and other information regarding our filings at http://www.sec.gov. Also accessible on our website are our code of ethics, governance guidelines, conflict minerals policy and Form SD, Foreign Corrupt Practices Act policy, internal audit charter and charters for the Audit Committee, Compensation Committee, Executive Committee and Governance and Nominating Committee of our Board of Directors. Such website is not intended to constitute any part of this report and is not incorporated by reference herein.

Please read the information under the heading "Item 1A. RISK FACTORS" below, which describes and refers to some of the important risks and uncertainties that could affect Microsemi’s future business and prospects.

We report results of operations on the basis of fifty-two and fifty-three week periods. The fiscal years ended on September 28, 2014, September 29, 2013, and September 30, 2012 consisted of fifty-two weeks. In referencing a year, we are referring to the fiscal year ended on the Sunday generally closest to September 30.

MISSION AND VISION STATEMENTS

Mission: Strengthen and leverage the industry's most comprehensive product technology portfolio, differentiated by power, security, reliability and performance, to expand our leadership position in high-value, high-barrier-to-entry markets. Develop innovative leading-edge system solutions that provide our customers with an unparalleled competitive edge, and deliver best-in-class technical service and support.

Vision: Leading-edge system solutions, solving the most difficult problems where performance matters, reliability is vital and security is non-negotiable.

Our growth strategy is dependent on our ability to successfully develop new technologies and products, and is complemented by our ability to implement our selective acquisitions strategy. New technologies or products that we may develop may not lead to an incremental increase in revenues, and there is a risk that these new technologies or products will decrease the demand for our existing products and result in an offsetting reduction in revenues. There can be no assurance that the benefits of any acquisition will outweigh the attendant costs, and if they do not, our results of operations and stock price may be adversely affected.

5

MARKETING

Microsemi’s products and unique areas of expertise are promoted to specific audiences by the Company’s internal marketing team, as well as through its global sales personnel. In addition, electronic component distributors and independent sales representatives actively market and sell Microsemi’s product portfolio offerings and competencies.

The principal end markets we target include:

• Aerospace – Microsemi’s high-performance solutions are used by the majority of commercial airliners manufactured today, including the latest advanced models such as the Boeing 787 Dreamliner, Airbus A350 and Airbus A380. Microsemi's high-reliability products are used in most satellites and in a wide range of commercial and military avionics systems.

• Communications – Microsemi is a key supplier to top-tier companies focused on wired and wireless communications products. These products are deployed in applications ranging from the central office to the enterprise and the home, and to a broad array of wired and wireless networked devices. Microsemi boasts the largest and most complete timing product offering, as well as the industry's only end to end timing product portfolio. Microsemi also pioneered the concept and development of PoE technology and offers ICs and system solutions (midspans) based on this increasingly popular power transmission solution.

• Defense & Security – Microsemi’s solutions are used by all Tier 1 prime contractors in a variety of homeland and offshore security applications. Microsemi's defense and security solutions are also used in products such as unmanned aerial vehicles, next-generation body scanners, and radio and guidance systems.

• Industrial – Microsemi delivers secure and highly reliable solutions for applications including industrial controls, machine-to-machine (M2M) communications, energy exploration and drilling, semiconductor capital equipment and alternative energy platforms. Microsemi is also a leading supplier of ultra-low power wireless solutions used in medical devices including implantable defibrillators and pacemakers, MRI machines, and portable medical equipment.

Microsemi marketed a number of new products that were recently announced, including:

• SmartFusion2 SoC FPGA Evaluation Kit, an easy-to-use, feature-rich, affordable platform designed to enable designers to quickly and easily accelerate evaluation or prototype their application;

• ZL30250 and ZL30251 flexible clock generators, which are both an ultra-low jitter solution in a 5x5mm package capable of replacing multiple high performance crystals and crystal oscillators, thus lowering bill of material cost along with easing design and testing of timing solutions;

• ZL30252 and ZL30253 any-to-any frequency clock multiplier and jitter attenuator integrated circuits, featuring best-in-class jitter performance as a clock multiplier and as a jitter attenuator all in an ultra-small 5x5 mm package, targeted at new applications with tough jitter budgets and tight board real estate restrictions;

• Timberwolf™ platform of Digital Signal Processors, enabling Microsemi to leverage its extensive expertise and leadership in voice communications to bridge into new and emerging hands-free applications that require clear speech, free of noise and echo;

• ZL38040, powered by Microsemi’s AcuEdge™ acoustic technology, delivers best-in-class high definition voice communication solutions for the enterprise hands-free speakerphone markets; and

• the Company's new largest density, lowest power SmartFusion2 150K LE SoC FPGA Advanced Development Kit, enabling board-level designers and system architects to quickly develop system-level designs by using the two FPGA Mezzanine Card expansion headers to connect a wide range of new functions with off-the-shelf daughter cards, which significantly reduces design time and cost when creating new applications for communications, industrial, defense and aerospace markets.

6

SALES

Net sales were $1.1 billion, $975.9 million and $1.0 billion in 2014, 2013 and 2012, respectively. Net sales by originating geographic area and end market are disclosed in Note 14 of the notes to the consolidated financial statements included in this Annual Report on Form 10-K, which information is incorporated herein by reference. A discussion of the risks attendant to our international operations are included in Item 1A, Risk Factors, under the heading, "International operations and sales expose us to material risks and may increase the volatility of our operating results," which information is incorporated herein by reference. A discussion of results of operations may be found in "Management’s Discussion and Analysis of Financial Condition and Results of Operations" in Item 7 of this Annual Report on Form 10-K.

ACQUISITIONS

We have implemented a growth strategy through continuous innovation complemented by strategic acquisitions to strengthen our product and technology portfolio with the intent of broadening our customer base and increasing our technology footprint in customers' end designs in markets where performance matters, security is non-negotiable and reliability is vital. This allows us to offer an increased value proposition, gather a larger portion of the bill of materials, and engage with customers as a strategic "total solution" partner as opposed to a single socket provider. We believe this strategy strengthens our position in the industry as it protects and grows our share within those markets with the highest barriers to entry, and increases our served available market.

We have in the past acquired a number of businesses or companies, additional product lines and assets. We currently expect to continue to expand and diversify our operations with additional acquisitions that allow Microsemi to strengthen its position in high-value, high barrier-to-entry markets, while delivering increased value to shareholders and customers.

Microsemi’s acquisition strategy focuses on combining our technical talent, product portfolios and roadmaps with those companies that allow us to leverage customer synergies, expand design capabilities and increase market share with key customers in the Aerospace, Communications, Defense & Security, and Industrial markets. Our customer base benefits from access to a broader portfolio of cutting-edge solutions from a single source, while adding greater scale and efficiencies to our business model. Acquisitions are an important component of Microsemi’s growth strategy and the Company will continue to evaluate acquisitions that support its objectives.

During the first quarter of 2014, we, through a wholly owned subsidiary, acquired all the outstanding shares of Symmetricom, Inc. ("Symmetricom"). We sometimes refer to this operation as our Frequency and Time Division ("Microsemi – FTD"). We acquired Symmetricom for its world-leading source of highly precise timekeeping technologies and solutions that enable next generation data, voice, mobile and video networks and services.

During the fourth quarter of 2014, we acquired Mingoa, Ltd., a provider of semiconductor IP for hardware accelerated Ethernet OAM and embedded tests, and Centellax, Inc., a supplier of high-speed analog and RF semiconductor products for the optical communications and Ethernet datacom markets.

MANUFACTURING AND SUPPLIERS

We depend on third party subcontractors, primarily in Asia, for wafer fabrication, assembly, testing and packaging of an increasing portion of our products. At the end of 2014, approximately 90% of our wafer, assembly and test requirements are currently sourced from third party foundries and subcontractors. We expect that this percentage may increase due, in part, to the manufacturing of our next-generation products by third party subcontractors in Asia and from activity at recently acquired operations.

Our wafer designs requirements are increasing in technological complexity and in order to meet our designs specifications, our foundry partners must expend resources for capital equipment and to develop or improve manufacturing processes. Our foundry partners' inability or unwillingness to expend these resources could adversely affect our business and operating results. The assembly, testing and packaging of our products is performed by a limited group of subcontractors. Disruption or termination of any of these subcontractors could occur and such disruptions or terminations could harm our business and operating results.

We utilize third party logistics services, including transportation, warehouse and shipping services. These service providers are subject to interruptions that affect their ability to service us, including the availability of transportation services, disruptions related to work stoppages, volatility in fuel prices and security incidents or natural events at manufacturing, shipping or receiving points or along transportation routes.

We generally do not have any long-term agreements with our subcontractors. As a result, we may be unable to directly control our quality assurance and product delivery schedules. The cost of product replacements or returns and other warranty

7

matters in connection with quality assurance problems caused by third party subcontractors could materially adversely affect our operating results, financial condition and cash flows. Third party manufacturers generally will have longer lead times for delivery of products as compared with our internal manufacturing, and therefore, when ordering from these suppliers, we will be required to make longer-term estimates of our customers' current demand for products, and these estimates are difficult to make accurately. Also, due to the amount of time typically required to qualify assemblers and testers, we could experience delays in the shipment of our products if we are forced to find alternate third parties to assemble or test our products. Any product delivery delays in the future could have a material adverse effect on our operating results, financial condition and cash flows. Our operations and ability to satisfy customer obligations could be adversely affected if our relationships with these subcontractors were disrupted or terminated. In addition, these subcontractors must be qualified by the U.S. government or customers for high-reliability processes. Historically the Defense Logistics Agency has rarely qualified any foreign manufacturing or assembly lines for reasons of national security; therefore, our ability to move certain manufacturing offshore may be limited or delayed.

In the event that any of our subcontractors were to experience financial, operational, production or quality assurance difficulties resulting in a reduction or interruption in supply to us, our operating results could suffer until alternate qualified subcontractors, if any, were to become available and active.

Many of our manufacturing and processing operations are controlled in accordance with military and other rigid commercial and industrial specifications. At our facilities with wafer processing capabilities, we manufacture and process products, starting from purchased silicon wafers. At our locations without wafer processing capabilities, processed wafers are sourced from third parties or our other facilities. We purchase silicon wafers, other semiconductor materials and packaging piece parts from domestic and international suppliers generally on long-term purchase commitments, that are cancelable on 30 to 90-days’ notice. Significantly all materials are available from multiple sources. In the case of sole source items, we have never suffered production delays as a result of suppliers’ inability to supply the parts. We believe that we stock adequate supplies for all materials, based upon backlog, delivery lead-time and anticipated new business. In the ordinary course of business, we enter into cancelable purchase agreements with some of our major suppliers to supply products over periods of up to 18 months. We also purchase a portion of our finished wafers from several foundry sources.

Processed silicon wafers are separated into individual dice that are then assembled in packages and tested in accordance with our test procedures. A major portion of our semiconductor manufacturing effort takes place after the semiconductor is assembled. Parts are tested a number of times, visually screened and environmentally subjected to shock, vibration, "burn in" and electrical tests in order to prove and assure reliability. As noted above, certain subcontract suppliers provide packaging and testing for our products necessary to deliver finished products. We pay those suppliers for assembled or fully-tested products meeting predetermined specifications.

RAW MATERIALS

Our manufacturing processes use certain key raw materials critical to our products. These include silicon wafers, certain chemicals and gases, ceramic and plastic packaging materials and various precious metals. We also rely on subcontractors to supply finished or semi-finished products that are marketed through our various sales channels. We obtain raw materials and semi-finished or finished products from various sources, although the number of sources for any particular material or product may be limited. We feel that our current supply of essential materials is adequate; however, shortages have occurred from time to time and could occur again.

RESEARCH AND DEVELOPMENT

We believe that continuing timely development and introduction of new products is essential to maintaining our competitive position. We currently conduct most of our product development effort in-house. We also employ outside consultants to assist with product design. We expense the cost of research and development as incurred. Research and development expenses are principally comprised of payroll and related costs, consulting costs and supplies. 

We spent approximately $192.0 million, $170.6 million and $168.5 million in 2014, 2013 and 2012 respectively, for research and development. The principal focus of our research and development activities has been to improve processes and to develop new products that support the growth of our businesses. The spending on research and development was principally to develop new higher-margin application-specific products, including, among others, our process and core architecture development for next generation programmable products, higher power PoE solutions, the continued roadmap development of our industry-leading timing & synchronization products, our silicon germanium (SiGe) RF power amplifier solutions for wireless LAN applications, and the ongoing development of gallium nitride (GaN) and silicon carbide (SiC) power management and RF solutions.

8

PATENTS, LICENSES, AND OTHER INTELLECTUAL PROPERTY RIGHTS

We have registered several of our trademarks with the U.S. Patent and Trademark Office and in foreign jurisdictions. We rely to some extent upon confidential trade secrets and patents to develop and maintain our competitive position. It is our policy to seek patent protection for significant inventions that may be patented, though we may elect, in appropriate cases, not to seek patent protection even for significant inventions if other protection, such as maintaining the invention as a trade secret, is considered more advantageous or cost-effective. We believe that patent and mask work protection could grow in significance but presently is of less significance in our business than experience, innovation, and management skill. No individual patent contributed significantly to our 2014, 2013 or 2012 net sales.

Due to the many technological developments and the technical complexity of the semiconductor industry, it is possible that certain of our designs or processes may involve infringement of patents or other intellectual property rights held by others. From time to time, we have received, and in the future may receive, notice of claims of infringement by our products on intellectual property rights of third parties. If any such infringements were alleged to exist, we might be obligated to seek a license from the holder of the rights and might have liability for past infringement. In the past, it has been common semiconductor industry practice for patent holders to offer licenses on reasonable terms and rates. Although in some situations, typically where the patent directly relates to a specific product or family of products, patent holders have refused to grant licenses. The practice of offering licenses appears to be generally continuing. However, no assurance can be given that we will be able to obtain licenses as needed in all cases or that the terms of any license that may be offered will be acceptable to us. In those circumstances where an acceptable license is not available, we would need either to change the process or product so that it no longer infringes or stop manufacturing the product or products involved in the infringement, which might be costly and could adversely affect our revenues and operating results.

Please see the information that is set forth under the subheading "Any failure by us to protect our proprietary technologies or maintain the right to use certain technologies may negatively affect our ability to compete," within the section below entitled "ITEM 1A. RISK FACTORS."

SALES TO THE U.S. GOVERNMENT

Approximately 27% of total net sales in 2014 were in the Defense & Security end market and while we service defense markets outside of the United States, sales in this end market correlate to direct sales to U.S. government agencies, customers whose principal sales are to the U.S. government agencies or to subcontractors whose material sales are to the U.S. government agencies. Future sales are subject to the uncertainties of governmental appropriations and national defense policies and priorities, including impacts of sequestration under the Budget Control Act of 2011, constraints of the budgetary process and timing and potential changes in these policies and priorities. Additionally, the long-term outlook for the fiscal position of the U.S. federal government is also uncertain, as illustrated by the 2013 budget negotiations and the shutdown of non-essential U.S. federal government services in October 2013.

We have experienced delays and reduction in appropriations on programs that include our products. Further delays, reductions in, or terminations of, government contracts or subcontracts, including those caused by any past or future shutdown of the U.S. federal government, could materially and adversely affect our operating results. While we generally function as a subcontractor, further changes in U.S. government procurement regulations and practices, particularly surrounding initiatives to reduce costs, may adversely impact the contracting environment and our operating results.

Generally, the U.S. government and its contractors and subcontractors may terminate their contracts with us at any time, with or without cause. In the first quarter of 2014, the U.S. government terminated for convenience a $75 million contract. We have in the past experienced the termination of at least one other contract due to the termination of the underlying government contract. All government contracts are also subject to price renegotiation in accordance with the U.S. Government Renegotiation Act. By reference to such contracts, all of the purchase orders we receive that are related to government contracts are subject to these possible events. In addition, the October 2013 shutdown of non-essential U.S. government services and any future government shutdowns may significantly increase the risk of further contract terminations or renegotiations, and any such termination or renegotiation could have a material adverse impact upon our revenues and results of operations.

In addition, we are required to maintain compliance with government regulations, particularly for our facilities and products that service the defense and security markets. Maintaining compliance with these regulations, including audit requirements of the U.S. government and our customers that are subject to these requirements, requires that we devote resources to matters that include training, personnel, information technology and facilities. Failure to maintain in compliance may result in the loss of certifications, fines and penalties that may materially and adversely affect our operating results

From time to time, we have experienced declining Defense & Security-related sales, primarily as a result of contract award delays and reduced security and defense program funding. We may be unable to adequately forecast or respond to the

9

timing of and changes to demand for Defense & Security-related products. In the past, defense-related spending on programs that we participate in has increased at a rate that has been slower than expected, been delayed or declined. Our prospects for additional defense and security related sales may be adversely affected in a material manner by numerous events or actions outside our control.

COMPETITIVE CONDITIONS

The semiconductor industry, including the areas in which we do business, is highly competitive. We expect intensified competition from existing competitors and new entrants. Competition is based on price, product performance, product availability, quality, reliability and customer service. We compete in various markets with companies of various sizes, some of which are larger and have greater financial and other resources than we have, and thus may be better able to pursue acquisition candidates and to withstand adverse economic or market conditions. In addition, companies not currently in direct competition with us may introduce competing products in the future. Some of our current competitors are Altera Corporation; Texas Instruments, Inc.; Integrated Device Technology, Inc.; Linear Technology Corp.; M/A COM Technology Solutions Inc.; Maxim Integrated Products, Inc.; Micrel Incorporated; Semtech Corp.; Silicon Laboratories, Inc.; Skyworks Solutions, Inc.; and Xilinx, Inc. Several of these companies are larger than we are and have greater resources than we have and may therefore be better able than we are to penetrate new markets, pursue acquisition candidates, and withstand adverse economic or market conditions. We expect intensified competition from both these existing competitors and new entrants into our markets. To the extent we are not able to compete successfully in the future, our financial condition, operating results or cash flows could be harmed.

We have implemented a growth strategy through continuous innovation complemented by strategic acquisitions with the intent of increasing our technology footprint in customers’ end designs in high-value, high barrier-to-entry markets. This allows us to offer an increased value proposition, gather a larger portion of the bill of materials, and engage with customers as a strategic partner as opposed to a socket provider. We believe this strategy strengthens our position in the industry as it protects and grows our share within those markets with the highest barriers to entry.

SEASONALITY

Generally, we are affected by the seasonal trends of the semiconductor and related industries. The impacts of seasonality are to some extent dependent on product and market mix of products shipped. These impacts can change from time to time and are not predictable. Factors that increase seasonality include, for example, holiday work schedules during our first fiscal quarter that tend to limit production and holiday demand that tends to increase net sales in the Communications end market during our fiscal first and fourth quarters.

ENVIRONMENTAL REGULATIONS

To date, our compliance with federal, state and local laws or regulations that have been enacted to regulate the environment has not had a material adverse effect on our capital expenditures, earnings, or competitive or financial position.

Federal, state and local laws and regulations impose various restrictions and controls on the discharge of materials, chemicals and gases used in semiconductor manufacturing processes. In addition, under some laws and regulations, we could be held financially responsible for remedial measures if our properties are contaminated or if we send waste to a landfill or recycling facility that becomes contaminated, even if we did not cause the contamination. Also, we may be subject to common law claims if we release substances that damage or harm third parties. Further, future changes in environmental laws or regulations may require additional investments in capital equipment or the implementation of additional compliance programs in the future. Any failure to comply with environmental laws or regulations could subject us to serious liabilities and could have material adverse effects on our operating results and financial condition.

In the conduct of our manufacturing operations, we have handled and do handle materials that are considered hazardous, toxic or volatile under federal, state or local laws. The risk of accidental release of such materials cannot be completely eliminated. In addition, we operate or own facilities located on or near real property that was formerly owned and operated by others. These properties were used in ways that involved hazardous materials. Contaminants may migrate from or within or through property. These risks may give rise to claims. We may be financially responsible for third parties, who are responsible for contamination, if they do not have funds, or if they do not make funds available when needed, to pay remediation costs imposed under environmental laws and regulations.

10

EMPLOYEES

At the end of 2014, we employed approximately 2,000 persons domestically and 1,400 persons at our international facilities. None of our employees are represented by a labor union; however, some employees in Europe are represented by an employee works council pursuant to local regulations. We have experienced no work stoppages and believe our employee relations are good.

ITEM 1A. RISK FACTORS

Negative or uncertain worldwide economic conditions could prevent us from accurately forecasting demand for our products, which could adversely affect our operating results or market share.

Negative worldwide economic conditions and market instability in recent years have made it increasingly difficult for us, our customers and our suppliers to accurately forecast future product demand trends. If signs of improvement in the global economy do not progress as expected and global economic conditions worsen, our forecasts of product demand trends could prove to be incorrect and could cause us to produce excess products that can depress product prices, increase our inventory carrying costs and result in obsolete inventory. Alternatively, this forecasting difficulty could cause a shortage of products, or materials used in our products, that could result in an inability to satisfy demand for our products and a loss of market share.

Negative or uncertain worldwide economic conditions may adversely affect our business, financial condition, cash flow and results of operations.

Recent domestic and global economic conditions have presented unprecedented and challenging conditions reflecting continued concerns about the availability and cost of credit, downgrades and continued negative pressure on sovereign credit ratings, the mortgage market, declining real estate values, increased energy costs, decreased consumer confidence and spending and added concerns fueled by the federal government's interventions in the financial and credit markets. These conditions have contributed to instability in both the domestic and international capital and credit markets, potentially increased the cost of credit and diminished expectations for the global economy. In addition, these conditions make it extremely difficult for our customers to accurately forecast and plan future business activities and could cause businesses to slow spending on our products, which could cause our sales to decrease or result in an extension of our sales cycles. Due to these conditions, our customers may have difficulties obtaining capital at adequate or historical levels to finance their ongoing businesses and operations, which could impair their ability to make timely payments to us. If that were to occur, we may be required to increase our allowance for doubtful accounts and our cash flows would be negatively impacted. We cannot predict the timing, strength or duration of any economic slowdown or subsequent economic recovery, worldwide or within our industry. If signs of improvement in the global economy do not progress as expected and economic conditions worsen, our business, financial condition, cash flows and results of operations will be adversely affected.

We may be unable to successfully implement our acquisitions strategy or integrate acquired companies and personnel with existing operations.

We have in the past acquired a number of businesses or companies, additional product lines and assets, and we may continue to expand and diversify our operations with additional acquisitions. We may be unable to identify or complete prospective acquisitions for many reasons, including competition from other companies in the semiconductor industry and high valuations of business candidates. In addition, applicable antitrust laws and other regulations may limit our ability to acquire targets or force us to divest an acquired business. If we are unable to identify suitable targets or complete acquisitions, our growth prospects may suffer, and we may not be able to realize sufficient scale advantages to compete effectively in all markets. To the extent that we are successful in making acquisitions, if we are unsuccessful in integrating acquired companies or product lines with existing operations, or if integration is more difficult or more costly than anticipated, we may experience disruptions that could have a material adverse effect on our business, financial condition and results of operations. In addition, the market price of our common stock could be adversely affected if the effect of any acquisitions on the Microsemi consolidated group's financial results is dilutive or is below the market's or financial analysts' expectations. Some of the risks that may affect our ability to integrate or realize any anticipated benefits from acquired companies, businesses or assets include those associated with:

• unexpected losses of key employees or customers of the acquired company;

• conforming the acquired company's standards, processes, procedures and controls with our operations;

• coordinating new product and process development;

• increasing complexity from combining recent acquisitions;

11

• hiring additional management and other critical personnel;

• increasing the scope, geographic diversity and complexity of our operations;

• difficulties in consolidating facilities and transferring processes and know-how;

• other difficulties in the assimilation of acquired operations, technologies or products;

• diversion of management's attention from other business concerns; and

• adverse effects on existing business relationships with customers.

In connection with acquisitions, we may:

• use a significant portion of our available cash; 

• issue equity securities, which would dilute current stockholders' percentage ownership;

• incur substantial debt;  

• incur or assume contingent liabilities, known or unknown, including potential lawsuits, infringement actions and similar liabilities;  

• incur impairment charges related to goodwill or other intangibles;  

• incur large, immediate accounting write-offs; and  

• face antitrust or other regulatory inquiries or actions.

There can be no assurance that the benefits of any acquisitions will outweigh the attendant costs, and if they do not, our results of operations and stock price may be adversely affected.

Reliance on government contracts for a significant portion of our sales could have a material adverse effect on results of operations.

A significant portion of our sales are or may be derived from U.S. government agencies or customers whose principal sales are to U.S. government agencies which creates concentrations of credit risk. Future sales are subject to the uncertainties of governmental appropriations and national defense policies and priorities, including impacts of sequestration under the Budget Control Act of 2011, constraints of the budgetary process and timing and potential changes in these policies and priorities. Additionally, the long-term outlook for the fiscal position of the U.S. federal government is also uncertain, as illustrated by the 2013 budget negotiations and the shutdown of non-essential U.S. federal government services in October 2013.

We have experienced delays and reduction in appropriations on programs that include our products. Further delays, reductions in or terminations of government contracts or subcontracts, including those caused by any past or future shutdown of the U.S. federal government, could materially and adversely affect our operating results. While we generally function as a subcontractor, further changes in U.S. government procurement regulations and practices, particularly surrounding initiatives to reduce costs, may adversely impact the contracting environment and our operating results.

Generally, the U.S. government and its contractors and subcontractors may terminate their contracts with us at any time, with or without cause. In the first quarter of 2014, the U.S. government terminated for convenience a $75 million contract. We have in the past experienced the termination of at least one other contract due to the termination of the underlying government contract. All government contracts are also subject to price renegotiation in accordance with the U.S. Government Renegotiation Act. By reference to such contracts, all of the purchase orders we receive that are related to government contracts are subject to these possible events. In addition, the recent shutdown of non-essential U.S. government services and any future government shutdowns may significantly increase the risk of further contract terminations or renegotiations, and any such termination or renegotiation could have a material adverse impact upon our revenues and results of operations.

12

In addition, we are required to maintain compliance with government regulations, particularly for our facilities and products that service the defense and security markets. Maintaining compliance with these regulations, including audit requirements of the U.S. government and our customers that are subject to these requirements, requires that we devote resources to matters that include training, personnel, information technology and facilities. Failure to maintain compliance may result in the loss of certifications, fines and penalties that may materially and adversely affect our operating results

Microsemi's aggregate net sales to the Defense & Security end market represented approximately 27% of total net sales in 2014. From time to time, we have experienced declining security and defense-related sales, primarily as a result of contract award delays and reduced security and defense program funding. We may be unable to adequately forecast or respond to the timing of and changes to demand for security and defense-related products. In the past, defense-related spending on programs that we participate in has increased at a rate that has been slower than expected, been delayed or declined. Our prospects for additional defense and security related sales may be adversely affected in a material manner by numerous events or actions outside our control.

We may not make the sales that are suggested by our order rates, backlog or book-to-bill ratio, and our book-to-bill ratio may be affected by product mix.

Undue reliance should not be placed on our backlog or book-to-bill ratios or changes to these amounts. We determine bookings substantially based on orders that are scheduled for delivery within 12 months. However, lead times for the release of purchase orders depend, in part, upon the scheduling practices of individual customers, and delivery times of new or non-standard products can be affected by scheduling factors and other manufacturing considerations. The rate of booking new orders can vary significantly from month to month. Customers frequently change their delivery schedules or cancel orders. We have in the past experienced long lead times for some of our products, which may have therefore resulted in orders in backlog being duplicative of other orders in backlog, which would increase backlog without resulting in additional revenues. Because of long lead times in certain products, our book-to-bill ratio may not be an indication of sales in subsequent periods. Uncertain worldwide economic conditions and market instability have also resulted in hesitance of our customers to place orders with long delivery schedules, which contributes to limited visibility into our markets.

The concentration of the facilities that service the semiconductor industry, including facilities of current or potential vendors or customers, makes us more susceptible to events or disasters affecting the areas in which they are most concentrated.

Relevant portions of the semiconductor industry, and the facilities that serve or supply this industry, tend to be concentrated in certain areas of the world. Events such as natural disasters and related disruptions, epidemics and health advisories like those related to Sudden Acute Respiratory Syndrome, Avian Influenza, H7N9 Virus, or the Ebola Virus, flooding, earthquakes, tsunamis, power outages and infrastructure disruptions, and terrorism, civil unrest and political instability in those areas, have from time to time in the past, and may again in the future, adversely affect the semiconductor industry. In particular, events such as these could adversely impact our ability to manufacture or deliver our products and result in increased costs and a loss of revenue. Similarly, a localized risk affecting our employees or the staff of our suppliers could impair the total volume of products that we are able to manufacture, which could adversely affect our results of operations and financial condition.

In the first quarter of 2012, severe flooding in certain regions of Thailand forced a shutdown of our operations in two subcontracted facilities in Thailand. The two Thailand facilities together accounted for as much as 5% of our total quarterly revenues. In response to the impact of flooding at subcontractor facilities in Thailand, we implemented plans to move production to other facilities outside the affected area. Production capabilities at these other facilities compensated for the loss of production in the flooded facilities in Thailand and we believe that we recovered from this event as of the end of the second quarter of 2012. However, unforeseen impacts on our customers, suppliers or subcontractors as a result of the flooding in Thailand, or other future natural disasters, could affect our revenue, consolidated financial position, results of operations and cash flows.

We are dependent on third parties for key functions including foundries for wafer supplies, subcontractors for assembly, test and packaging services and vendors for logistics, and problems at these third parties could adversely affect our business and operating results.

We depend on third party subcontractors, primarily in Asia, for wafer fabrication, assembly, testing and packaging of an increasing portion of our products. At the end of 2014, approximately 90% of our wafer, assembly and test requirements were sourced from third party foundries and subcontractors. We expect that these percentages may increase due, in part, to the manufacturing of our next-generation products by third party subcontractors in Asia and from activity at recently acquired operations.

13

Our wafer designs requirements are increasing in technological complexity and in order to meet our designs specifications, our foundry partners must expend resources for capital equipment and develop or improve manufacturing processes. Our foundry partners' inability or unwillingness to expend these resources could adversely affect our business and operating results. The assembly, testing and packaging of our products is performed by a limited group of subcontractors. Disruption or termination of any of these subcontractors could occur and such disruptions or terminations could harm our business and operating results.

We utilize third party logistics services, including transportation, warehouse and shipping services. These service providers are subject to interruptions that affect their ability to service us, including the availability of transportation services, disruptions related to work stoppages, volatility in fuel prices and security incidents or natural events at manufacturing, shipping or receiving points or along transportation routes.

We generally do not have any long-term agreements with our subcontractors. As a result, we may be unable to directly control our quality assurance and product delivery schedules. The cost of product replacements or returns and other warranty matters in connection with quality assurance problems caused by third party subcontractors could materially adversely affect us. Third party manufacturers generally will have longer lead times for delivery of products as compared with our internal manufacturing, and therefore, when ordering from these suppliers, we will be required to make longer-term estimates of our customers' current demand for products, and these estimates are difficult to make accurately. Also, due to the amount of time typically required to qualify assemblers and testers, we could experience delays in the shipment of our products if we are forced to find alternate third parties to assemble or test our products. Any product delivery delays in the future could have a material adverse effect on our operating results, financial condition and cash flows. Our operations and ability to satisfy customer obligations could be adversely affected if our relationships with these subcontractors were disrupted or terminated. In addition, these subcontractors must be qualified by the U.S. government or customers for high-reliability processes. Historically the Defense Logistics Agency has rarely qualified any foreign manufacturing or assembly lines for reasons of national security; therefore, our ability to move certain manufacturing offshore may be limited or delayed.

In the event that any of our subcontractors were to experience financial, operational, production or quality assurance difficulties resulting in a reduction or interruption in supply to us, our operating results could suffer until alternate qualified subcontractors, if any, were to become available and active.

Provisions in our credit facility and our current leverage could adversely affect our consolidated financial position and our ability to operate our business.

Our credit facility requires that we comply with financial and restrictive covenants. Although we are currently in compliance with these covenants, unexpected downturns in our business may trigger certain covenants that increase our cost of borrowing, decrease the amounts available under our credit facility, or both. The current amount outstanding on our credit facility exceeds our current cash and cash equivalents balance, and we may incur additional debt in the future. Some of the risks that are associated with our leverage include the following:

• our ability to obtain additional financing in the future for acquisitions, capital expenditures, general corporate purposes or other purposes may be impaired;

• our current credit facility only permits borrowing on variable rates of interest and increases in certain benchmark interest rates will increase the cost of borrowing;  

• leverage will increase our vulnerability to declining economic conditions, particularly if the decline is prolonged;  

• failure to comply with any of our debt covenants may result in an event of default which, if not cured or waived, could have a material adverse effect on us;  

• financial and restrictive covenants may adversely affect or limit our ability to implement business plans, react to changes in economic conditions, benefit from changes in tax regulations, pay a cash dividend or execute repurchases of our common stock;  

• debt service payments will continue to have a negative impact on our cash flows; and

• prepayment terms may discourage us from refinancing our current credit agreement or reduce the benefit of lower interest rates.

14

Both our customers and we are subject to laws, regulations and similar requirements, changes to which may adversely affect our business and operations.

We are subject to laws, regulations and similar requirements that affect our business and operations, including, but not limited to, the areas of commerce, import and export control (especially related to products in our Defense & Security end market), financial disclosures, intellectual property, income and other taxes, anti-trust, anti-corruption, labor, environmental, health and safety. Our compliance in these areas may be costly, especially in areas where there are inconsistencies between the various jurisdictions in which we operate. While we have implemented policies and procedures to comply with laws and regulations, there can be no assurance that our employees, contractors, suppliers or agents will not violate such laws and regulations or our policies. Any such violation or alleged violation could materially and adversely affect our business. Any changes or potential changes to laws, regulations or similar requirements, or our ability to respond to these changes, may significantly increase our costs to maintain compliance or result in our decision to limit our business, products or jurisdictions in which we operate, any of which could materially and adversely affect our business and operations.

Federal and state regulatory agencies, including the United States Federal Communications Commission and the various state public utility commissions and public service commissions, regulate most of our domestic telecommunications customers. Similar government oversight also exists in the international market. While we may not be directly affected by this legislation, such regulation of our customers may negatively impact our business. For instance, the sale of our products may be affected by the imposition upon certain of our customers of common carrier tariffs and the taxation of telecommunications services. These regulations are continuously reviewed and changed by the various governmental agencies. Changes in current or future laws or regulations, in the United States or elsewhere, could negatively impact our business and operating results.

The Dodd-Frank Wall Street Reform and Consumer Protection Act includes provisions regarding certain minerals and metals, known as conflict minerals, mined from the Democratic Republic of Congo and adjoining countries. These provisions require companies to undertake due diligence procedures and report on the use of conflict minerals in its products, including products manufactured by third parties. Compliance with these provisions has caused and will continue to cause us to incur costs to determine whether our supply chain is conflict free and we may face difficulties if our suppliers are unwilling or unable to verify the source of their materials. Our ability to source these minerals and metals may also be adversely impacted. In addition, our customers may require that we provide them with a certification and our inability to do so may disqualify us as a supplier.

Unanticipated changes in our tax provisions, or exposure to additional income tax liabilities or unfavorable results of tax examinations could affect our financial results.

We are subject to income taxes in the United States and numerous foreign jurisdictions. Our tax liabilities are affected by the amounts we record in intercompany transactions for inventory, services, licenses, funding and other items. We are subject to ongoing tax examinations in various jurisdictions. Tax authorities may disagree with our intercompany charges or other matters and assess additional taxes. Our application of transfer pricing has been the primary subject of the current examination of our U.S. federal income tax returns. We regularly assess the likely outcomes of examinations in order to determine the appropriateness of our tax provision. However, the actual outcomes of examinations could result in large and unexpected tax liabilities for past tax periods and have a material impact on our financial condition. In addition, our effective tax rate in the future could be adversely affected by changes in the mix of earnings in countries with differing statutory tax rates and benefits, changes in the valuation of deferred tax assets and liabilities, changes in tax laws, especially tax laws related to foreign operations, and the discovery of new information in the course of our tax return preparation process. Any of these changes could materially affect our operating results, cash flows and financial condition.

We hold cash and cash equivalents at various foreign subsidiaries that may not be readily available to meet domestic cash requirements.

Our various foreign subsidiaries hold cash and cash equivalents and as we intend to reinvest certain foreign earnings indefinitely these balances held outside the United States may not be readily available to meet our domestic cash requirements. We require a substantial amount of cash in the United States for operating requirements, purchases of property and equipment, debt service, and potentially for future acquisitions. If we are unable to meet our domestic cash requirements using domestic cash flows from operations, domestic cash and cash equivalents, or by settling loans receivable with our foreign subsidiaries, it may be necessary for us to consider repatriation of earnings that we have designated as permanently reinvested. This may require us to record additional income tax expense and remit additional taxes, which could have a material effect on our results of operations, cash flows and financial condition.

15

Our operating results may fluctuate in future periods, which could cause our stock price to decline.

We have experienced, and expect to experience in future periods, fluctuations in net sales and operating results from period to period. Our projections and results may be subject to significant fluctuations as a result of a number of factors including:

• the timing of orders from and shipment of products to major customers;

• an unexpected reduction in sales to, or loss of, key customers;

• our product mix;

• changes in the prices of our products;

• manufacturing delays or interruptions;

• delays or failures in testing and processing products for defense, security and aerospace applications;

• inventory obsolescence or write-downs;

• restructuring charges;

• variations in the cost of components for our products;

• limited availability of components that we obtain from a single or a limited number of suppliers; and

• seasonal and other fluctuations in demand for our products.

We have in the past closed, combined, sold or disposed of certain of our operations, have current plans to combine certain of our operations and may determine to do so in the future, which could reduce our sales volume and result in significant restructuring costs.

We face major technical challenges in regards to transferring component manufacturing between locations. Before a transfer of manufacturing, we must be finished qualifying the new facility appropriately with the U.S. government or certain customers. In addition, to mitigate the potential for manufacturing disruptions following a closure, we typically build inventory to support the transition process. While we generally plan to retain revenues and income of those operations by transferring the manufacturing elsewhere within Microsemi's subsidiaries, our plans may change at any time based on reassessment of the alternatives and consequences. While we hope to benefit overall from increased gross margins and increased capacity utilization rates at remaining operations, the remaining operations will need to bear the corporate administrative and overhead costs, which are charges to income that had been allocated to the discontinued business units. Moreover, delays in effecting our consolidations could result in changes in the timing of realized costs savings and in greater than anticipated costs incurred to achieve the hoped for longer-range savings.

We may make further specific determinations to consolidate, close, sell or divest of additional facilities, operations or product lines, which could be announced at any time. Possible adverse consequences from current and future consolidation or disposition activities may include a loss of revenues and various accounting charges such as for workforce reduction, including severance and other termination benefits and for excess facilities, including lease termination fees, future contractual commitments to pay lease charges, facility and environmental remediation costs and moving costs to remove property and equipment from facilities. We may also be adversely impacted from inventory buildup in preparation for the transition of manufacturing, disposition costs, impairments of goodwill, a possible immediate loss of revenues, and other items in addition to normal or attendant risks and uncertainties. We may be unsuccessful in any of our current or future efforts to consolidate our business into a smaller number of facilities. Our plans to minimize or eliminate any loss of revenues during consolidation may not be achieved.

We may not be able to develop new technologies and products to satisfy changes in customer demand or industry standards, and our competitors could develop products that decrease the demand for our products.

Rapidly changing technologies and industry standards, along with frequent new product introductions, characterize the semiconductor industry. Our financial performance depends, in part, on our ability to design, develop, manufacture, assemble, test, market and support new products and enhancements on a timely and cost-effective basis. If we are unable to continue to reduce package sizes, improve manufacturing yields and expand sales, we may not remain competitive. Our recent spending on research and development was principally to develop new higher-margin application-specific products, including, among others, our process and core architecture development for next generation programmable products, higher power PoE solutions,

16

the continued roadmap development of our industry-leading timing & synchronization products, our SiGe RF power amplifier solutions for wireless LAN applications, and the ongoing development of GaN and SiC power management and RF solutions. The competitiveness of designs that we have introduced, including power-over-ethernet, CCFL and LED drivers, class-D audio amplifiers, InGaP RF power amplifiers for wireless LAN applications, development and adoption of silicon carbide technology, ASICs, VDMOS products for high frequency communications and S-band products for RF applications, are subject to various risks and uncertainties that we are not able to control, including changes in customer demand and the introduction of new or superior technologies by others. Moreover, any failure by us in the future to develop new technologies or timely react to changes in existing technologies could materially delay our development of new products, which could result in product obsolescence, decreased revenues and a loss of our market share to our competitors. New technologies or products that we may develop may not lead to an incremental increase in revenues, and there is a risk that these new technologies or products will decrease the demand for our existing products and result in an offsetting reduction in revenues. In addition, products or technologies developed by others may render our products or technologies obsolete or non-competitive. A fundamental shift in technologies in our product markets could have a material adverse effect on our competitive position within the industry.

Additionally, our ability to compete within our industry will depend on our ability to identify and ensure compliance with industry standards that are constantly evolving. The emergence of new industry standards could render our products incompatible with products developed by major manufacturers. As a result, we could be required to invest significant time and effort and incur significant expense to redesign our products to ensure compliance with relevant standards. If our products are not in compliance with prevailing industry standards, it could have a material adverse effect on our business operations and financial results.

We must commit resources to research and development, design, and production prior to receipt of purchase commitments and could lose some or all of the associated investment.

We sell products primarily pursuant to purchase orders for current delivery, rather than pursuant to long-term supply contracts. Many of these purchase orders may be revised or canceled without penalty. As a result, we must commit resources to the research, design and production of products without any advance purchase commitments from customers. Any inability to sell a product after we devote significant resources to it could have a material adverse effect on our business, financial condition, results of operations and cash flows.

International operations and sales expose us to material risks and may increase the volatility of our operating results.

Net sales from international markets represent a significant portion of total net sales and totaled 47% in 2014. These sales were principally to customers in Europe and Asia. Foreign sales are classified as shipments to foreign destinations. We maintain several international facilities or contracts with entities outside the United States, including Canada, China, France, India, Ireland, Israel, Japan, Korea, Malaysia, Macau, the Philippines, Taiwan, Thailand and the United Kingdom. There are risks inherent in doing business internationally, including:

• legislative or regulatory requirements and potential changes in or interpretations of requirements in the United States and in the countries in which we manufacture or sell our products;

• tax regulations and treaties and potential changes in regulations and treaties in the United States and in and between countries in which we manufacture or sell our products;

• fluctuations in income tax expense and net income due to differing statutory tax rates in various domestic and international jurisdictions;

• trade restrictions;

• uncertain interpretations of and difficulties enforcing intellectual property laws;

• local business and cultural factors that may differ from our domestic standards and practices, including business practices from which we are prohibited from engaging by the Foreign Corrupt Practices Act (the "FCPA") and other anti-corruption laws and regulations;

• availability of transportation services, including disruptions related to work stoppages, security incidents or natural events at manufacturing, shipping or receiving points or along transportation routes;

• work stoppages or disruption of local labor supply;

• communication interruptions;

17

• economic and political instability, including the recent uncertainty in the global financial markets;

• acts of war or terrorism, or health issues (such as Sudden Acute Respiratory Syndrome, Avian Influenza, H7N9 Virus, or the Ebola Virus), which could disrupt our manufacturing and logistical activities;

• compliance with and changes in import/export regulations;

• changes in tariffs and freight rates;

• difficulties in collecting receivables and enforcing contracts generally;

• restrictions in the transfer or repatriation of funds; and

• currency exchange rate fluctuations, devaluation of foreign currencies, hard currencies shortages and exchange rate fluctuations.

International sales of our products that service the defense and security markets are subject to U.S. and local government regulations and procurement policies and practices including regulations relating to import-export control. Violations of export control regulations could result in suspension of our ability to export our products. Depending on the scope of the suspension, this could have a material effect on our ability to perform certain international contracts. In addition, failure to maintain compliance with U.S. and foreign government regulations, including the FCPA and foreign anti-corruption measures, may result in fines and penalties that may materially and adversely affect our operating results.

If political, military, transportation, health or other issues in foreign countries result in cancellations of customer orders or contribute to a general decrease in economic activity or corporate spending, or directly impact Microsemi's marketing, manufacturing, financial and logistics functions, our consolidated results of operations and financial condition could be materially adversely affected. In addition, the laws of certain foreign countries may not protect our products, assets or intellectual property rights to the same extent as do U.S. laws. Therefore, the risk of piracy of our technology and products, which could result in a material adverse effect on our financial condition, operating results and cash flows, may be greater in those foreign countries.

There may be unanticipated costs associated with appropriately scaling our manufacturing capacity to meet expected changes in customer demand.

We may incur unanticipated costs as we scale our manufacturing capacity to meet expected changes in customer demand. During periods of anticipated increases in customer demand, we may determine that our business will require increased manufacturing capacity on our part and on the part of certain outside foundries, assembly shops, or testing facilities for some of our integrated circuit products or other products. Expansion activities are subject to a number of risks, including:

• unavailability or late delivery of the advanced, and often customized, equipment used in the production of our specialized products;

• availability of qualified manufacturing personnel;

• delays in bringing new production equipment on-line;

• delays in supplying satisfactory designs or products to our existing customers;

• unforeseen environmental, engineering or manufacturing qualification problems relating to existing or new facilities; and

• overexpansion may result in unfavorable manufacturing variances, restructuring costs and impairments.  

These and other risks may affect the ultimate cost and timing of any expansion of our capacity.

Downturns in the highly cyclical semiconductor industry have in the past adversely affected our operating results, cash flows and the value of our business, and may continue to do so in the future.

The semiconductor industry is highly cyclical and is characterized by constant technological change, rapid product obsolescence and price erosion, short product life-cycles, consolidations of customers, and fluctuations in product supply and demand. During recent years we, as well as many others in our industry, have experienced significant declines in the pricing of, as well as demand for, products during the "down" portions of these cycles, which have sometimes been severe and prolonged. We have also noted consolidations of customers, particularly our distributors, which may adversely affect our pricing leverage

18

or ability to maintain sufficient distributor channel inventory to meet end customer demand. In the future, these downturns may prove to be as, or possibly even more, severe than past ones. Our ability to sell our products depends, in part, on continued demand in each of our diverse end markets. Each of these end markets has, in the past, experienced reductions in demand, and current and future downturns in any of these markets may continue to adversely affect our revenues, operating results, cash flows and financial condition.

The semiconductor business is subject to downward price pressure.

The market for our products has been characterized by declining selling prices, and we anticipate that our average selling prices will decrease in future periods, although the timing and amount of these decreases cannot be predicted with any certainty. The pricing pressure in the semiconductor industry in past years has been due to a large number of factors, many of which were not easily foreseeable, such as the Asian currency crisis, industry-wide excess manufacturing capacity, weak economic growth, the slowdown in capital spending that followed the "dot-com" collapse, the reduction in capital spending by telecom companies and satellite companies, and the effects of the tragic events of terrorism on September 11, 2001. Similar to past years, recent unfavorable economic conditions have resulted in a tightening of the credit markets. If signs of improvement in the global economy do not progress as expected and global economic conditions worsen, we may experience a decline in our average selling prices. In addition, our competitors have in the past, and may again in the future, lower prices in order to increase their market share. Continued downward price pressure in the industry may reduce our operating results and harm our financial and competitive position.

The semiconductor industry is highly competitive.

The semiconductor industry, including the areas in which we do business, is highly competitive. We expect intensified competition from existing competitors and new entrants. Competition is based on price, product performance, product availability, quality, reliability and customer service. We compete in various markets with companies of various sizes, some of which are larger and have greater financial and other resources than we have, and thus may be better able to pursue acquisition candidates and to withstand adverse economic or market conditions. In addition, companies not currently in direct competition with us may introduce competing products in the future. Some of our current major competitors are Altera Corporation; Texas Instruments, Inc.; Integrated Device Technology, Inc.; Linear Technology Corp.; M/A COM Technology Solutions Inc.; Maxim Integrated Products, Inc.; Micrel Incorporated; Semtech Corp.; Silicon Laboratories, Inc.; Skyworks Solutions, Inc.; and Xilinx, Inc. Several of these companies are larger than we are and have greater resources than we have and may therefore be better able than we are to penetrate new markets, pursue acquisition candidates, and withstand adverse economic or market conditions. We expect intensified competition from both of these existing competitors and new entrants into our markets. To the extent we are not able to compete successfully in the future, our financial condition, operating results or cash flows could be harmed.

Compound semiconductor products may not successfully compete with silicon-based products.

Our choice of technologies for development and future implementation may not reflect future market demand. The production of gallium arsenide (GaAs), indium gallium phosphide (InGaP), indium gallium arsenide phosphide (InGaAsP) SiGe or SiC integrated circuits is more costly than the production of silicon circuits, and we believe it will continue to be more costly in the future. The costs differ because of higher costs of raw materials, lower production yields and higher unit costs associated with lower production volumes. Silicon semiconductor technologies are widely used in process technologies for integrated circuits, and these technologies continue to improve in performance. As a result, we must offer compound semiconductor products that provide vastly superior performance to that of silicon for specific applications in order for our products to be competitive with silicon products. If we do not offer compound semiconductor products that provide sufficiently superior performance to offset the cost differential and otherwise successfully compete with silicon-based products, our revenues and operating results may be materially and adversely affected.

Production delays related to new compound semiconductors could adversely affect our future results.

We utilize process technology to manufacture compound semiconductors such as GaAs, InGaP, InGaAsP, SiGe and SiC primarily to manufacture semiconductor components. We are pursuing this development effort internally as well as with third party foundries. Our efforts sometimes may not result in commercially successful products. Certain competitors offer this capability and our customers may purchase our competitors' products instead of ours for this reason. In addition, the third party foundries that we use may delay delivery of, or even completely fail to deliver, technology and products to us. Our business and financial prospects could be materially and adversely affected by any failure by us to timely produce these products.

19

We may be unable to retain our customers due in part to our inability to fulfill our customer demand and other factors.

Our ability to fulfill our customers' demand for our products is and will continue to be dependent in part on our order volumes and long lead times with regards to our manufacturing and testing of certain high-reliability products. The lead time for manufacturing and testing of high-reliability products can be many months. In response to current demand, we have recently increased our capital expenditures for production equipment as well as increased expenses for personnel at certain manufacturing locations. We may have delays or other difficulties in regards to increasing our production and in hiring and retaining qualified personnel. In addition, we have raised prices on certain products, primarily in our Aerospace, Defense & Security and Industrial end markets. Manufacturing delays and price increases may result in our customers reducing their purchase levels with us and/or seeking alternative solutions to meet their demand. In addition, the current demand may not continue in the future. Decreased sales as a result of a loss of one or more significant customers could materially and adversely impact our business and results of operations.

Unfavorable or uncertain conditions in certain retail markets that our OEM customers address may cause fluctuations in our rate of revenue growth or financial results.

Some of the principal markets we serve include consumer markets, such as mobile/connectivity and notebooks, monitors and LCD televisions. If domestic and global economic conditions worsen, overall consumer spending may be reduced or shifted to products other than those made by our customers, which would adversely impact demand for products in these markets. Reduced sales by our customers in these end markets will adversely impact demand by our customers for our products and could also slow new product introductions by our customers and by us. Lower net sales of our products would have an adverse effect on our revenue, cash flow and results of operations.

Fluctuations in sales of high-reliability products for use in medical devices may adversely affect our financial results.

Although the market for devices is growing, customers in this market could reduce their reliance on outside suppliers. The medical device market also fluctuates based on several other factors, such as product recalls and the need to secure regulatory approvals. Product recalls can, from time to time, accelerate sales to levels that cannot be sustained for long periods of time. The timing and qualification of new generations of products brought to market by OEMs can also result in fluctuations in order rates.

Variability of our manufacturing yields may affect our gross margins and profits.

Our manufacturing yields vary significantly among products, depending on the complexity of a particular product's design and our experience in manufacturing that type of product. We have in the past experienced difficulties in achieving planned yields, which have adversely affected our gross margins and profits.

The fabrication of semiconductor products is a highly complex and precise process. Problems in the fabrication process can cause a substantial percentage of wafers to be rejected or numerous circuits on each wafer to be non-functional, thereby reducing yields. These difficulties primarily include:

• defects in masks, which are used to transfer circuit patterns onto our wafers;

• impurities in the materials used;

• contamination of the manufacturing environment; and

• equipment failure.

Because a large portion of our costs of manufacturing is relatively fixed and average selling prices for our products tend to decline over time, it is critical for us to improve the number of shippable circuits per wafer and increase the production volume of wafers in order to maintain and improve our results of operations. Yield decreases can result in substantially higher unit costs, which could materially and adversely affect our operating results and have done so in the past. Moreover, our process technologies have primarily utilized standard silicon semiconductor manufacturing equipment, and production yields of compound integrated circuits have been relatively low compared with silicon circuit devices. We may be unable to continue to improve yields in the future, and we may suffer periodic yield problems, particularly during the early production of new products or introduction of new process technologies. In either case, our results of operations could be materially and adversely affected.

20

Some of our facilities and the facilities of our suppliers and customers are located near major earthquake fault lines.

Our headquarters, our major operating facilities, and certain other critical business operations and customers are located near known major earthquake fault lines. We presently do not have earthquake insurance. We could be materially and adversely affected in the event of a major earthquake.

Delays in beginning production, implementing production techniques, resolving problems associated with technical equipment malfunctions, or issues related to government or customer qualification of facilities could adversely affect our manufacturing efficiencies, our ability to realize cost savings and the timing and amount of revenue we realize.

Microsemi's consolidated manufacturing efficiency will be an important factor in our future profitability, and we may be unsuccessful in our efforts to maintain or increase our manufacturing efficiency. Our manufacturing processes, and those utilized by our third-party subcontractors, are highly complex, require advanced and costly equipment and are sometimes modified in an effort to improve yields and product performance. We have from time to time, experienced difficulty in transitioning manufacturing processes to different facilities or adopting new manufacturing processes. As a consequence, we have at times experienced delays in product deliveries and reduced yields. Every silicon wafer fabrication facility utilizes very precise processing, and processing difficulties and reduced yields commonly occur, often as a result of contamination of the material. Reduced manufacturing yields can often result in manufacturing and shipping delays due to capacity constraints. Therefore, manufacturing problems can result in additional operating expenses and delayed or lost revenues. Microsemi may experience manufacturing problems in achieving acceptable yields or experience product delivery delays in the future as a result of, among other things, upgrading existing facilities, relocating processes to different facilities, or changing its process technologies, any of which could result in a loss of future revenues or an increase in manufacturing costs.

Interruptions, delays or cost increases affecting our materials, parts, equipment or subcontractors may impair our competitive position.

Our manufacturing operations, and the outside manufacturing operations that we use increasingly, in some instances, depend upon obtaining a governmental qualification of the manufacturing process, and in all instances, adequate supplies of materials including wafers, parts and equipment (including silicon, mold compounds and lead frames) on a timely basis from third parties. Some of the outside manufacturing operations we use are based in foreign countries. Our results of operations could be adversely affected if we are unable to obtain adequate supplies of materials, parts and equipment in a timely manner or if the costs of materials, parts or equipment increase significantly. From time to time, suppliers may extend lead times, limit supplies or increase prices due to capacity constraints or other factors. Although we generally use materials, parts and equipment available from multiple suppliers, we have a limited number of suppliers for some materials, parts and equipment. In addition, if signs of improvement in the global economy do not progress as expected and global economic conditions worsen, our suppliers may cease operations or be unable to obtain capital at adequate or historical levels to finance their ongoing businesses and operations, which could impair their ability to continue to supply us. If alternate suppliers for these materials, parts and equipment are not available, our operations could be interrupted, which would have a material adverse effect on our operating results, financial condition and cash flows.

Fixed costs may reduce operating results if our sales fall below expectations.

Our expense levels are based, in part, on our expectations for future sales. Many of our expenses, particularly those relating to capital equipment and manufacturing overhead, are relatively fixed. We might be unable to reduce spending quickly enough to compensate for reductions in sales. Accordingly, shortfalls in sales could materially and adversely affect our operating results. This challenge could be made even more difficult if lead times between orders and shipments are shortening.  

Failure to manage consolidation of operations effectively could adversely affect our margins and earnings.

Our ability to successfully offer and sell our products requires effective planning and management processes. Our consolidations and realignments of operations, and expected future growth, may place a significant strain on our management systems and resources, including our financial and managerial controls, reporting systems, procedures and information technology. In addition, we will need to continue to train and manage our workforce worldwide. Any unmet challenges in that regard could negatively affect our results of operations.

21

Any failure by us to protect our proprietary technologies or maintain the right to use certain technologies may negatively affect our ability to compete.

We rely heavily on our proprietary technologies. Our future success and competitive position depend in part upon our ability to obtain or maintain protection of certain proprietary technologies used in our principal products. We do not have significant patent protection on many aspects of our technology. The protection of some of our technology as "trade secrets" will not necessarily protect us from all uses by other persons of our technology, or their use of technology that is similar or superior to that which is embodied in our trade secrets. In addition, others may be able to independently duplicate or exceed our technology in whole or in part. In the instances in which we hold patents or patent licenses, such as with respect to some circuit components for notebook computers and LCD TVs, any patents held by us may be challenged, invalidated or circumvented, or the rights granted under any patents may not provide us with competitive advantages. Patents often provide only narrow protection and require public disclosure of information that may otherwise be subject to trade secret protection. In addition, patents eventually expire and are not renewable.

Obtaining or protecting our proprietary rights may require us to defend claims of intellectual property infringement by our competitors. We could also become subject to lawsuits in which it is alleged that we or companies we have acquired have infringed or are infringing upon the intellectual property rights of others with or without our prior awareness of the existence of those third-party rights, if any. Litigation in connection with our intellectual property, whether instituted by us or others, could be very costly and distract management and other resources from our business. We are currently involved in certain patent litigation to protect our patents and patent rights, which could cause legal costs to increase above normal levels over the next several years. It is not possible to estimate the exact amounts of these costs, but it is possible that these costs could have a negative effect on our future results.

Moreover, if any infringement, real or imagined, happens to exist, arise or is claimed in the future, we may be exposed to substantial liability for damages and may need to obtain licenses from the patent owners, discontinue or change our processes or products or expend significant resources to develop or acquire non-infringing technologies. We may not be successful in such efforts, or such licenses may not be available under reasonable terms. Any failure by us to develop or acquire non-infringing technologies or to obtain licenses on acceptable terms could have a material adverse effect on our operating results, financial condition and cash flows.

Our products may be found to be defective or hazardous and we may not have sufficient liability insurance.

There is at any time a risk that our products may be found to be defective or to contain, without the customer's knowledge, certain prohibited hazardous chemicals after we have already shipped the products in volume, perhaps requiring a product replacement or recall. We may be subject to product returns that could impose substantial costs and have a material and adverse effect on our business, financial condition and results of operations. Our aerospace, defense, and industrial businesses in particular expose us to potential liability risks that are inherent in the manufacturing and marketing of high-reliability electronic components for critical applications. Production of many of these products is sensitive to minute impurities, which can be introduced inadvertently in manufacturing. Any production mistake can result in large and unanticipated product returns, product liability and warranty liability. Environmental regulations have imposed on every major participant in the electronics industry a new burden of determining and tracking the presence and quantity of certain chemicals in the content of supplies we buy and add to our products for sale and to inform our customers about each of our finished goods' relevant chemical contents. The management and execution of this process is very challenging, and mistakes in this information gathering process could have a material adverse effect on our business.

We may be subject to product liability claims with respect to our products. Our product liability insurance coverage may be insufficient to pay all such claims. In addition, product liability insurance may become too costly for us to maintain or may become completely unavailable to us in the future. We may not have sufficient resources to satisfy any product liability claims not covered by insurance, which would materially and adversely affect our financial position.

Environmental liabilities could adversely impact our consolidated financial position.

Federal, state and local laws and regulations impose various restrictions and controls on the discharge of materials, chemicals and gases used in our semiconductor manufacturing processes or in our finished goods. Under recent environmental regulations, we are responsible for determining whether certain toxic metals or certain other toxic chemicals are present in any given component we purchase and in each given product we sell. These environmental regulations have required us to expend a portion of our resources and capital on relevant compliance programs. In addition, under other laws and regulations, we could be held financially responsible for remedial measures if our current or former properties are contaminated or if we send waste to a landfill or recycling facility that becomes contaminated, even if we did not cause the contamination. Also, we may be subject to additional common law claims if we release substances that damage or harm third parties. Further, future changes in environmental laws or regulations may require additional investments in capital equipment or the implementation of additional

22

compliance programs in the future. Any failure to comply with existing or future environmental laws or regulations could subject us to significant liabilities and could have a material adverse effect on our operating results, cash flows and financial condition.

In the conduct of our manufacturing operations, we have handled and do handle materials that are considered hazardous, toxic or volatile under federal, state and local laws. The risk of accidental release of such materials cannot be completely eliminated. In addition, we operate or own facilities located on or near real property that was formerly owned and operated by others. These properties were used in ways that involved hazardous materials. Contaminants may migrate from, within or through any such property, which may give rise to claims against us. Third parties who are responsible for contamination may not have funds, or may not make funds available when needed, to pay remediation costs imposed upon us jointly with them under environmental laws and regulations.

Litigation could adversely impact our consolidated financial position.

We are and have been involved in various litigation matters, including from time to time, litigation relating to employment matters, commercial transactions, intellectual property matters, contracts, environmental matters and matters related to compliance with governmental regulations. Litigation is inherently uncertain and unpredictable. The potential risks and uncertainties include, but are not limited to, such factors as the costs and expenses of litigation and the time and attention required of management to attend to litigation. An unfavorable resolution of any particular legal claim or proceeding, and/or the costs and expenses incurred in connection with a legal claim or proceeding, could have a material adverse effect on our consolidated financial position or results of operations.

Our future success depends, in part, upon our ability to continue to attract and retain the services of our executive officers or other key management or technical personnel.

We could potentially lose the services of any of our senior management personnel at any time due to a variety of factors that could include, without limitation, death, incapacity, military service, personal issues, retirement, resignation or competing employers. Our ability to execute current plans could be adversely affected by such a loss. We may fail to attract and retain qualified technical, sales, marketing and managerial personnel required to continue to operate our business successfully. Personnel with the expertise necessary for our business are scarce and competition for personnel with proper skills is intense. Also, attrition in personnel can result from, among other things, changes related to acquisitions, retirement and disability. We may not be able to retain existing key technical, sales, marketing and managerial employees or be successful in attracting, developing or retaining other highly-qualified technical, sales, marketing and managerial personnel, particularly at such times in the future as we may need to fill a key position. If we are unable to continue to develop and retain existing executive officers or other key employees or are unsuccessful in attracting new highly-qualified employees, our business, financial condition and results of operations could be materially and adversely affected.

The volatility of our stock price could affect the value of an investment in our stock and our future financial position.

The market price of our stock has fluctuated widely. Between September 29, 2013 and September 28, 2014, the market sale price of our common stock ranged between a low of $20.22 and a high of $27.91. The historical market prices of our common stock may not be indicative of future market prices. We may not be able to sustain or increase the value of our common stock. The trading price of our common stock may be influenced by factors beyond our control, such as the recent unprecedented volatility of the financial markets and the current uncertainty surrounding domestic and foreign economies. Declines in the market price of our stock could adversely affect our ability to retain personnel with stock incentives, to acquire businesses or assets in exchange for stock and/or to conduct future financing activities with or involving our common stock.

At times, our working capital levels have risen, which adversely affects cash flow.

At times, our working capital levels have risen and the increase has adversely affected cash flow. A factor contributing to the increase in our working capital has related to acquisitions with increases in accounts receivable and inventory generally exceeding increases in accounts payable and accrued liabilities. Another factor resulting in an increase in working capital has been a buildup of inventory prior to the consolidation of our manufacturing operations. We built inventory cushions during the transition of manufacturing between facilities in order to maintain an uninterrupted supply of product. Obsolescence of any inventory has recently and could in the future result in adverse effects on our future results of operations and future revenue. We periodically evaluate the profitability of our various offerings and in 2014, our evaluation led us to selectively exit product offerings that we believe will continue to lag our overall profitability goals. This resulted in inventory charges of $7.9 million. We believe that for many of these products, market dynamics dictate that price is the primary differentiator rather than our value-added core competencies of power, reliability, security and performance.

23

There may be some potential effects of system outages or data security breaches, which could adversely affect our operations, financial results or reputation.

We face risks from electrical or telecommunications outages, computer hacking or other general system failure. We rely heavily on our internal information and communications systems and on systems or support services from third parties to manage our operations efficiently and effectively. Any of these are subject to failure. System-wide or local failures that affect our information processing could have a material adverse effect on our business, financial condition, results of operations and cash flows. In addition, a system failure or data security breach could also result in the unintentional disclosure of confidential information about us, our customers or our employees, which could result in our incurring costs for remedial or preventative actions, damage our reputation with customers and reduce demand for our products and services. Further, insurance coverage does not generally protect from normal wear and tear, which can affect system performance. Any applicable insurance coverage for an occurrence could prove to be inadequate. Coverage may be or become unavailable or inapplicable to any risks then prevalent. We are upgrading and integrating, and have plans to upgrade and integrate further, our enterprise information systems, and these efforts may cause additional strains on personnel and system resources or may result in potential system outages.

Our accounting policies and estimates have a material effect on the financial results we report.

Critical accounting policies and estimates have a material effect on our calculations and estimations of amounts in our financial statements. Our operating results and balance sheets may be adversely affected either to the extent that actual results prove to be materially lower than previous accounting estimates or to the extent that accounting estimates are revised adversely. We base our critical accounting policies, including our policies regarding revenue recognition, reserves for returns, rebates, price protections, and bad debt and inventory valuation, on various estimates and subjective judgments that we may make from time to time. The judgments made can significantly affect net income and our balance sheets. We are required to make significant judgments concerning inventory, and whether it becomes obsolete or excess, and concerning impairments of long-lived assets and of goodwill. Our judgments, estimates and assumptions are subject to change at any time. In addition, our accounting policies may change at any time as a result of changes in generally accepted accounting principles as they apply to us or changes in other circumstances affecting us. Changes in accounting policy have affected and could further affect, in each case materially and adversely, our results of operations or financial position.

If, in the future, we conclude that our internal control over financial reporting is not effective, investors could lose confidence in the reliability of our financial statements, which could result in a decrease in the value of our common stock.

As directed by Section 404 of the Sarbanes-Oxley Act of 2002, the SEC adopted rules requiring public companies to include a report of management on the companies' internal control over financial reporting in their annual reports on Form 10-K, including an assessment by management of the effectiveness of the filing company's internal control over financial reporting. In addition, the independent registered public accounting firm auditing a public company's financial statements must attest to the effectiveness of the company's internal control over financial reporting. There is a risk that in the future we may identify internal control deficiencies that suggest that our controls are no longer effective. This could result in an adverse reaction in the financial markets due to a loss of confidence in the reliability of our financial statements, which could cause the market price of our common stock to decline and make it more difficult for us to finance our operations.

Our investments in securities subject us to principal, liquidity and counterparty risks that could adversely affect our financial results.

We invest cash balances primarily in money market funds. At times, we have also entered into interest rate swap and foreign currency forward contracts. While all of our investments to date are highly rated and we believe our counterparties to be highly rated, current credit market disruptions may adversely affect the value and liquidity of these investments and may affect the ability of our counterparties to fulfill their contractual obligations.

We may have increasing difficulty attracting and retaining qualified outside Board members.

The directors and management of publicly traded corporations are increasingly concerned with the extent of their personal exposure to lawsuits and shareholder claims, as well as governmental and creditor claims that may be made against them in connection with their positions with publicly-held companies. Outside directors are becoming increasingly concerned with the availability of directors' and officers' liability insurance to pay on a timely basis the costs incurred in defending shareholder claims. Directors' and officers' liability insurance is expensive and difficult to obtain. The SEC and the NASDAQ Stock Market have also imposed higher independence standards and certain special requirements on directors of public companies. Accordingly, it may become increasingly difficult to attract and retain qualified outside directors to serve on our Board.

24

Delaware law and our charter documents contain provisions that could discourage or prevent a potential takeover of Microsemi that might otherwise result in our stockholders receiving a premium over the market price for their shares.

Provisions of Delaware law and our certificate of incorporation and bylaws could make more difficult an acquisition of Microsemi by means of a tender offer, a proxy contest, or otherwise, and the removal of incumbent officers and directors.

These provisions include:

• Section 203 of the Delaware General Corporation Law, which prohibits a merger with a 15%-or-greater stockholder, such as a party that has completed a successful tender offer, without board approval until three years after that party became a 15%-or-greater stockholder; and

• The authorization in the certificate of incorporation of undesignated preferred stock, which could be issued without stockholder approval in a manner designed to prevent or discourage a takeover or in a way that may dilute an investment in our common stock.

Certain provisions of our charter documents, including provisions eliminating the ability of stockholders to call special meetings and limiting the ability of stockholders to raise matters at a meeting of stockholders without giving advance notice, may have the effect of delaying or preventing changes in control or management of Microsemi. In addition, our charter documents do not permit cumulative voting, which may make it more difficult for a third party to gain control of our Board of Directors.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 2. PROPERTIES

We are headquartered in Aliso Viejo, California. We conduct engineering, research and development, sales and administration activities at our principal owned and leased facilities. We also conduct manufacturing at the locations denoted with an asterisk. A list of locations of these facilities is as follows:

Arizona	Indiana	Ottawa, Canada
Phoenix*	West Lafayette
		Macau SAR, China
California	Massachusetts
Aliso Viejo	Beverly*	Shanghai, China*
Camarillo*	Lawrence*
Cupertino	Lowell*	Shenzhen, China
Garden Grove*
La Mirada*	Oregon	Bruges, France*
San Diego	Bend*
San Jose*		Ennis, Ireland*
Santa Clara*	Pennsylvania
Santa Rosa*	Reading	Hod Hasharon, Israel
Colorado	Texas	Manila, Philippines*
Boulder*	Austin
	Dallas	Cabuyao, Philippines*
Georgia
Atlanta		Caldicot, United Kingdom*

We also lease sales offices throughout the world. We believe that our existing facilities are well maintained and in good operating condition and that they are adequate for our foreseeable business needs.

25

ITEM 3. LEGAL PROCEEDINGS

We are involved in pending litigation, administrative and similar matters arising out of the normal conduct of our business, including litigation relating to acquisitions, employment matters, intellectual property matters, commercial transactions, contracts, environmental matters and matters related to compliance with governmental regulations. The ultimate aggregate amount of monetary liability or financial impact with respect to these matters is subject to many uncertainties and is therefore, not predictable with assurance. In the opinion of management, the final outcome of these matters, if they are adverse, will not have a material adverse effect on our financial position, results of operations or cash flows. However, there can be no assurance with respect to such result, and monetary liability, financial impact or other sanctions imposed on us from these matters could differ materially from those projected.

ITEM 4. MINE SAFETY DISCLOSURES

Inapplicable

PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

(a) Market Information

Our Common Stock is traded on the NASDAQ Global Select Market under the symbol MSCC. The following table sets forth the high and low sales prices at which our Common Stock traded as reported on the NASDAQ Global Select Market.

Fiscal Year ended September 28, 2014	HIGH		LOW
1st Quarter	$	26.71	$	20.22
2nd Quarter	$	26.65	$	22.16
3rd Quarter	$	27.91	$	22.21
4th Quarter	$	27.58	$	23.55
Fiscal Year ended September 29, 2013	HIGH		LOW
1st Quarter	$	21.12	$	17.12
2nd Quarter	$	23.28	$	19.00
3rd Quarter	$	23.24	$	18.96
4th Quarter	$	26.72	$	22.57

POSSIBLE VOLATILITY OF STOCK PRICES

The market prices of securities issued by technology companies, including ours, have been and will be volatile. The securities of many technology companies have experienced extreme price and volume fluctuations, which have often not necessarily been related to their respective operating performances. Quarter to quarter variations in operating results, changes in earnings estimates by analysts, announcements of technological innovations or new products, announcements of major contract awards, events involving other companies in or out of the industry, economic conditions, events involving war or terrorism, and other events or factors may have a significant impact (positive or negative) on the market price of our Common Stock.

(b) Approximate Number of Common Equity Security Holders

Title of Class	Approximate Number of Record Holders (as of November 5, 2014)
Common Stock, $0.20 Par Value	772

The number of stockholders of record treats all of the beneficial holders of shares held in one "nominee" or "street name" as a unit.

(c) Dividends

26

We have not paid cash dividends in the last five years and have no current plans to do so. Our credit facility contains covenants that may limit the amount of cash dividends we may pay.

(d) Performance Graph

In prior years, our performance graph has reflected the cumulative total return of the "Total Return Index for the NASDAQ Stock Market (U.S. and Foreign)" and "Total Return Index for NASDAQ Electronic Components Stocks" indexes. However, as a result of a change in the total return data made available to us through our vendor provider, our performance graph now incorporates comparable indexes provided by NASDAQ OMX Global Indexes. Compared to the performance graph provided in the prior year, we substituted 1) the "Total Return Index for the NASDAQ Stock Market (U.S. and Foreign)" with the "NASDAQ Composite Total Return" and 2) the "Total Return Index for NASDAQ Electronic Components Stocks" with the "NASDAQ US Benchmark Electronics Components & Equipment". Please note, information for the "Total Return Index for the NASDAQ Stock Market (U.S. and Foreign)" and "Total Return Index for NASDAQ Electronic Components Stocks" indexes is not provided, and will not be provided in the future, as December 31, 2013 is the last day for which data is available.

The following graph compares the cumulative total return on the Company’s common stock for the five-year period ended September 28, 2014 to the total returns of 1) the "NASDAQ Composite Total Return" and 2) the "NASDAQ US Benchmark Electronics Components & Equipment". This comparison assumes in each case that $100 was invested at the close of market on September 25, 2009 and that any dividends were reinvested. The Company’s fiscal year ends on the Sunday generally closest to September 30 each year. The stock price performance on the following graph is not necessarily indicative of future stock price performance.

COMPARISON OF 5 YEAR CUMULATIVE TOTAL RETURN*

Among Microsemi Corporation, NASDAQ Composite Total Return

And the NASDAQ US Benchmark Electronics Components & Equipment

* Indexes calculated on month-end basis.

The stock performance graph shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities under that section and shall not be deemed to be incorporated by reference into any filing of Microsemi under the Securities Act of 1933, as amended, or the Exchange Act.

27

ITEM 6. SELECTED FINANCIAL DATA

	For the five fiscal years in the period ended on September 28, 2014
	(Amounts in thousands, except per share data)
	2014		2013		2012			2011		2010
Selected Consolidated Income Statement Data:
Net sales	$	1,138,263	$	975,944	$	1,012,495		$	835,854	$	518,268
Gross profit	$	611,503	$	557,188	$	552,623		$	441,171	$	248,211
Operating income	$	54,231	$	89,427	$	58,347		$	54,981	$	55,881
Net income (loss)	$	23,123	$	43,674	$	(29,675	)	$	55,730	$	59,038
Earnings (loss) per share:
Basic	$	0.25	$	0.49	$	(0.35	)	$	0.66	$	0.73
Diluted	$	0.24	$	0.48	$	(0.35	)	$	0.65	$	0.72
Weighted-average shares outstanding
Basic	92,891		89,508		85,837			83,916		80,797
Diluted	94,511		91,328		85,837			85,747		81,541
Selected Consolidated Balance Sheet Data:
Working capital	$	457,359	$	489,398	$	404,863		$	424,201	$	360,846
Total assets	$	2,061,096	$	1,912,655	$	1,934,630		$	1,482,473	$	879,886
Long-term liabilities	$	784,243	$	747,365	$	850,166		$	436,677	$	42,120
Stockholders’ equity	$	1,115,630	$	1,032,058	$	927,986		$	892,107	$	766,443

The selected financial data should be read in conjunction with the Consolidated Financial Statements and Notes thereto, and "Management’s Discussion and Analysis of Financial Condition and Results of Operations" in Item 7 of this Annual Report on Form 10-K, which discusses the effect of business combinations.

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

This Annual Report on Form 10-K includes current beliefs, expectations and other forward-looking statements that involve risks and uncertainties. Our actual results could differ materially from the results contemplated by these forward-looking statements due to certain factors, including those discussed in Part I, Item 1A, "Risk Factors" and elsewhere in this Annual Report on Form 10-K. This "Management's Discussion and Analysis of Financial Condition and Results of Operations" ("MD&A") and the accompanying consolidated financial statements and notes thereto must be read in conjunction with the MD&A and the consolidated financial statements and notes thereto in its entirety.

Unless the context otherwise requires, the "Company," "Microsemi," "we," "our," "ours" and "us" refer to Microsemi Corporation and its consolidated subsidiaries.

OVERVIEW

We are a leading designer, manufacturer and marketer of high-performance analog and mixed-signal semiconductor solutions differentiated by power, security, reliability and performance. We offer one of the industry's most comprehensive portfolios of semiconductor technology. Our products include high-performance, high-reliability radio frequency ("RF") and power components, analog and RF integrated circuits (ICs), standard and customizable system-on-chip solutions ("SoCs"/"cSoCs"), and mixed-signal and radiation-tolerant field programmable gate arrays ("FPGAs"). We also offer subsystems and modules that include application-specific power modules and Power-over-Ethernet ("PoE") midspans.

The principal end markets that we serve include Aerospace, Communications, Defense & Security, and Industrial.Today, Microsemi products are found in communications infrastructure systems, both wireless and wired LAN systems, implantable pacemakers and defibrillators, missile systems, military and commercial satellites and aircrafts, oil field equipment and airport security systems.

Mission and Vision Statements

Mission: Strengthen and leverage the industry's most comprehensive product technology portfolio, differentiated by power, security, reliability and performance, to expand our leadership position in high-value, high-barrier-to-entry markets.

28

Develop innovative leading-edge system solutions that provide our customers with an unparalleled competitive edge, and deliver best-in-class technical service and support.

Vision: Leading-edge system solutions, solving the most difficult problems where performance matters, reliability is vital and security is non-negotiable.

Our growth strategy is dependent on our ability to successfully develop new technologies and products, and is complemented by our ability to implement our selective acquisitions strategy. New technologies or products that we may develop may not lead to an incremental increase in revenues, and there is a risk that these new technologies or products will decrease the demand for our existing products and result in an offsetting reduction in revenues. There can be no assurance that the benefits of any acquisition will outweigh the attendant costs, and if they do not, our results of operations and stock price may be adversely affected.

Summary of Financial Results

Net sales, gross profit and gross margin were as follows (dollar amounts in thousands):

	2014			2013			2014 vs 2013 $			2014 vs 2013 %		2012			2013 vs 2012 $			2013 vs 2012%
Net sales	$	1,138,263		$	975,944		$	162,319		16.6	%	$	1,012,495		$	(36,551	)	(3.6	)%
Gross profit	611,503			557,188			$	54,315		9.7	%	$	552,623		$	4,565		0.8	%
Gross margin	53.7		%	57.1		%	(3.4		)%			54.6		%	2.5		%

We recorded an increase in net sales between 2014 and 2013, with sales in each of our end markets benefiting from our acquisition of Symmetricom, Inc. (sometimes referred to herein as "Microsemi – FTD"), which occurred in the first quarter of 2014. For 2014, we estimate that between 10% and 15% of net sales were derived from products acquired in the Microsemi – FTD transaction. We recorded a decrease in net sales between 2013 and 2012 and did not make any acquisitions in 2013.

As discussed further in "Results of Operations", we recorded net sales increases in our Communications and Industrial end markets in 2014 as compared to 2013, which was partially offset by a decrease in our Aerospace and Defense & Security end markets. On November 6, 2014, we announced that we expect our consolidated net sales for the first quarter of 2015 to be flat with a range of plus or minus 2%.

Gross profit increased$54.3 million to $611.5 million (53.7% of net sales) for 2014 from $557.2 million (57.1% of net sales) for 2013 and increased$4.6 million between 2013 and 2012 from $552.6 million (54.6% of net sales) for 2012. In 2014, we recorded $7.9 million in inventory write-offs from restructuring activities, as discussed further in "Results of Operations". We also recorded acquisition-related inventory charges totaling $16.7 million in 2014 from our acquisition of Microsemi – FTD.

As discussed further in "Results of Operations", during 2014, we recorded net provisions for employee severance of $13.6 million, net provisions for contract termination costs of $8.7 million and provisions for other associated costs for restructuring of $9.2 million.

For 2014 and 2013, we recorded an income tax provision of $0.8 million and $12.4 million, respectively. The difference in our effective tax rates from the U.S. statutory rate of 35% primarily reflects the impact of the mix of domestic and international pre-tax income, valuation allowance and credits. Our tax provision for the twelve months ended September 28, 2014 was the combined calculated tax expenses/benefits for various jurisdictions, as well as a benefit from the release of valuation allowance of approximately $6.3 million and $5.5 million, that resulted from the allocation of consideration from our acquisitions of Microsemi – FTD and Centellax, respectively. However, during 2014 and 2013 there was an overall increase in the valuation allowance of $8.9 million and $13.9 million, respectively, which primarily related to deductions for intangible (non-goodwill) amortization, partially offset by the release of valuation allowance due to the deferred tax liabilities acquired.

Uncertain macroeconomic conditions worldwide subject us to certain risks (see Part I, Item 1A, Risk Factors, "Negative or uncertain worldwide economic conditions may adversely affect our business, financial condition, cash flow and results of operations," "The concentration of the facilities that service the semiconductor industry, including facilities of current or potential vendors or customers, makes us more susceptible to events or disasters affecting the areas in which they are most concentrated," and "We may be unable to successfully implement our acquisitions strategy or integrate acquired companies and personnel with existing operations.").

29

Undue reliance should not be placed on our backlog or book-to-bill ratios or changes to these amounts. We determine bookings substantially based on orders that are scheduled for delivery within 12 months. However, lead times for the release of purchase orders depend, in part, upon the scheduling practices of individual customers, and delivery times of new or non-standard products can be affected by scheduling factors and other manufacturing considerations. The rate of booking new orders can vary significantly from month to month. Customers frequently change their delivery schedules or cancel orders. (see Part I, Item 1A, Risk Factors, "We may not make the sales that are suggested by our order rates, backlog or book-to-bill ratio, and our book-to-bill ratio may be affected by product mix.")

Approximately 27% of total net sales in 2014 were in the Defense & Security end market and while we service defense markets outside of the United States, sales in this end market correlate to direct sales to U.S. government agencies, customers whose principal sales are to the U.S. government agencies or to subcontractors whose material sales are to the U.S. government agencies. Future sales are subject to the uncertainties of governmental appropriations and national defense policies and priorities, including impacts of sequestration under the Budget Control Act of 2011, constraints of the budgetary process and timing and potential changes in these policies and priorities. Additionally, the long-term outlook for the fiscal position of the U.S. federal government is also uncertain, as illustrated by the 2013 budget negotiations and the shutdown of non-essential U.S. federal government services in October 2013 (see Part I, Item 1A, Risk Factors, "Reliance on government contracts for a portion of our sales could have a material adverse effect on results of operations.")

Markets

Our products include discrete and integrated circuit, module, and subsystem solutions that enhance customer designs by improving performance, security, reliability and power consumption. The principal end markets we serve include:

• Aerospace – Microsemi’s high-performance solutions are used by the majority of commercial airliners manufactured today, including the latest advanced models such as the Boeing 787 Dreamliner, Airbus A350 and Airbus A380. Microsemi's high-reliability products are used in most satellites and in a wide range of commercial and military avionics systems.

• Communications – Microsemi is a key supplier to top-tier companies focused on wired and wireless communications products. These products are deployed in applications ranging from the central office to the enterprise and the home, and to a broad array of wired and wireless networked devices. Microsemi boasts the largest and most complete timing product offering, as well as the industry's only end to end timing product portfolio. Microsemi also pioneered the concept and development of PoE technology and offers ICs and system solutions (midspans) based on this increasingly popular power transmission solution.

• Defense & Security – Microsemi’s solutions are used by all Tier 1 prime contractors in a variety of homeland and offshore security applications. Microsemi's defense and security solutions are also used in products such as unmanned aerial vehicles, next-generation body scanners, and radio and guidance systems.

• Industrial – Microsemi delivers secure and highly reliable solutions for applications including industrial controls, machine-to-machine (M2M) communications, energy exploration and drilling, semiconductor capital equipment and alternative energy platforms. Microsemi is also a leading supplier of ultra-low power wireless solutions used in medical devices including implantable defibrillators and pacemakers, MRI machines, and portable medical equipment.

Recent Product Introductions

Microsemi marketed a number of new products that were recently announced, including:

• SmartFusion2 SoC FPGA Evaluation Kit, an easy-to-use, feature-rich, affordable platform designed to enable designers to quickly and easily accelerate evaluation or prototype their application;

• ZL30250 and ZL30251 flexible clock generators, which are both an ultra-low jitter solution in a 5x5mm package capable of replacing multiple high performance crystals and crystal oscillators, thus lowering bill of material cost along with easing design and testing of timing solutions;

• ZL30252 and ZL30253 any-to-any frequency clock multiplier and jitter attenuator integrated circuits, featuring best-in-class jitter performance as a clock multiplier and as a jitter attenuator all in an ultra-small 5x5 mm package, targeted at new applications with tough jitter budgets and tight board real estate restrictions;

• Timberwolf™ platform of Digital Signal Processors, enabling Microsemi to leverage its extensive expertise and leadership in voice communications to bridge into new and emerging hands-free applications that require clear speech, free of noise and echo;

30

• ZL38040, powered by Microsemi’s AcuEdge™ acoustic technology, delivers best-in-class high definition voice communication solutions for the enterprise hands-free speakerphone markets; and

• the Company's new largest density, lowest power SmartFusion2 150K LE SoC FPGA Advanced Development Kit, enabling board-level designers and system architects to quickly develop system-level designs by using the two FPGA Mezzanine Card expansion headers to connect a wide range of new functions with off-the-shelf daughter cards, which significantly reduces design time and cost when creating new applications for communications, industrial, defense and aerospace markets.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States that require us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the consolidated financial statements and revenues and expenses during the periods reported. Actual results could differ from those estimates. Information with respect to our critical accounting policies that we believe could have the most significant effect on our reported results and require subjective or complex judgments is contained in Note 1 to our consolidated financial statements.

Revenue Recognition, Sales Returns and Allowances

We primarily recognize revenue from customers, including distributors, when title and risk of loss have passed to the customer provided that: 1) evidence of an arrangement exists; 2) delivery has occurred; 3) the fee is fixed or determinable; and 4) collectability is reasonably assured. For substantially all sales, revenue is recognized, net of estimated returns and discounts, at the time the product is shipped.

We enter into distribution agreements that permit rights to limited stock rotations, returns, price protection, and volume purchase and other discounts. We provide an estimated allowance for these rights and record a corresponding reduction in revenue. Our estimated allowance is based on several factors including past history and notification from customers of pending activity. Actual activity under such rights have been within management’s expectations.

We also derive a portion of our revenue from fixed-price contracts. Revenue for these contracts is recorded under a percentage of completion method, which is based on the ratio of total costs incurred to date to estimated total costs at completion. Gross profit expected to be realized on fixed-price contracts is based on periodic estimates of total revenues and costs for each contract. Losses on contracts are accrued when estimated total costs are expected to exceed total revenues. Occasionally, we will enter into contracts on a cost plus fee basis. We recognize revenue based on reimbursements for actual expenses plus the contractually agreed upon fee with the customer.

Restructuring Charges

We recognize a liability for restructuring costs when the liability is incurred. The restructuring accruals are based upon management estimates at the time they are recorded and can change depending upon changes in facts and circumstances subsequent to the date the original liability is recorded. The main components of our restructuring charges are workforce reductions and elimination of excess facilities. Workforce-related charges are accrued when it is determined that a liability exists, which is generally when individuals have been notified of their expected termination dates and expected severance payments or when formal severance plans exist, when the severance payments are probable and reasonably estimable. The elimination of excess facilities results in charges for lease termination fees, future contractual commitments to pay lease charges net of estimated sublease income, facility remediation costs and moving costs to remove property and equipment from the facilities. We recognize charges for elimination of excess facilities when we have vacated the premises or ceased use of the facility.

Stock-Based Compensation

Compensation expense for stock options and stock appreciation rights was calculated based on the on the service period of the grant and the grant date or assumption date fair value using the Black-Scholes pricing model. All stock appreciation rights we have granted or assumed are stock-settled. Stock options and stock appreciation rights are granted at exercise prices equal to the closing price of our common stock on the date of grant. Assumed stock options and stock appreciation rights are granted at exercise prices determined in accordance with the acquisition agreement. Expected life and forfeiture rates were estimated based primarily on historical data that were stratified between members of the Board of Directors, executive employees and all other recipients. Expected volatility was estimated based on historical volatility using equally weighted daily price observations over a period approximately equal to the expected life of each option. The risk free interest rate is based on the implied yield currently available on U.S. Treasury securities with an equivalent remaining term. No dividends are expected to be paid.

31

Compensation expense for restricted shares was calculated based on the service period of the grant and the closing price of our common stock on the date of grant. Restricted shares are subject to forfeiture if a participant does not meet length of service requirements. Restricted stock awards granted to employees typically vest over a three year period and awards granted to non-employee directors vest in accordance with our director compensation policy.

Compensation expense for performance stock units was calculated based upon expected achievement of the performance metrics specified in the grant and the closing price of our common stock on the date of grant, or when a grant contains a market condition, the grant date fair value using a Monte Carlo simulation. The Monte Carlo simulation incorporates estimates of the potential outcomes of the market condition on the grant date fair value of each award.

Accounting For Income Taxes

We account for income taxes under the asset and liability method, whereby deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. We evaluate the need to establish a valuation allowance for deferred tax assets based upon the amount of existing temporary differences, the period in which they are expected to be recovered and expected levels of taxable income. A valuation allowance to reduce deferred tax assets is established when it is more likely than not that some or all of the deferred tax assets will not be realized. We recognize uncertain tax positions when they meet a more-likely-than-not threshold. We recognize potential accrued interest and penalties related to unrecognized tax benefits as income tax expense.

We file U.S. federal, state, and foreign income tax returns in jurisdictions with varying statutes of limitations. Fiscal years 2007 to 2013 generally remain subject to examination by federal and most state tax authorities. In significant foreign jurisdictions, the 2010 to 2013 tax years generally remain subject to examination by tax authorities. We establish liabilities for possible assessments by tax authorities resulting from known tax exposures including, but not limited to, international tax issues and certain tax credits. We are currently undergoing an Internal Revenue Service examination as well as certain state examinations. There have been no significant proposed adjustments to date. We do not believe the results of any audits would have a material impact on our financial position, results of operations or cash flows. We will continue to monitor the status of these audits.

Segment Information

We use the management approach for segment disclosure, which designates the internal organization that is used by management for making operating decisions and assessing performance as the source of our reportable segments. We manage our business on the basis of one reportable segment, as a manufacturer of semiconductors in different geographic areas, including the United States, Europe and Asia.

Accounts Receivable and Allowance for Doubtful Accounts

Trade accounts receivable are recorded at the invoiced amount and do not bear interest. The accounts receivable amount shown in the balance sheet are trade accounts receivable balances at the respective dates, net of allowance for doubtful accounts. The allowance for doubtful accounts is our best estimate of the amount of probable credit losses in our existing accounts receivable. We determine the allowance based in part on our historical write-off experience and specific review of account balances due. Past due balances are reviewed individually for collectability. All other balances are reviewed on a pooled basis by the age of the receivable. Account balances are charged off against the allowance when we determine that it is probable the receivable will not be recovered. We review our allowance for doubtful accounts quarterly. We do not have any off-balance-sheet credit exposure related to our customers. To date, our allowance for doubtful accounts has generally been within management’s estimates.

Inventories

Inventories are stated at the lower of cost, as determined using the first-in, first-out method, or market. Costs include materials, labor and manufacturing overhead. We evaluate the carrying value of our inventories taking into account such factors as historical and anticipated future sales compared with quantities on hand and the price we expect to obtain for our products in their respective markets. We also evaluate the composition of our inventories to identify any slow-moving, excess or obsolete products. Additionally, inventory write-downs are made based upon such judgments for any inventories that are identified as having a net realizable value less than their cost, which is further reduced by related selling expenses. The net realizable value of our inventories for ongoing operations has generally been within management’s estimates. We have recorded inventory write-downs for discontinued product lines that did not meet gross margin targets, products that are being migrated to newer

32

generations, products that service the large capital spending end markets for which demand has declined, products related to facility closures and losses related to flooding of a facility in Thailand.

Fair Value of Financial Assets and Liabilities

Accounting Standards Codification ("ASC") 825 permits entities to elect the fair value option for certain financial assets and financial liabilities. For financial assets or financial liabilities for which an entity elects the fair value option, ASC 825 requires that the entity record the financial asset or financial liability at fair value rather than at historical cost with changes in fair value recorded in the income statement. ASC 825-25 requires that upfront costs and fees related to items for which the fair value option is elected shall be recognized in earnings as incurred and not deferred. As further discussed in Note 8 of the notes to the consolidated financial statements, we elected the fair value option in accounting for the term loan balance outstanding as of October 2, 2011. Following the extinguishment of the term loan in conjunction with our acquisition of Zarlink, we did not elect the fair value option and are reporting new term loan balances subsequent to October 2, 2011, at par value.

Long-Lived Assets

We assess the impairment of long-lived assets whenever events or changes in circumstances indicate that their carrying value may not be recoverable from the undiscounted estimated future cash flows expected to result from their use. We are required to make judgments and assumptions in identifying those events or changes in circumstances that may trigger impairment. Some of the factors we consider include:

• Significant decrease in the market value of an asset.

• Significant changes in the extent or manner for which the asset is being used or in its physical condition including manufacturing plant closures.

• A significant change, delay or departure in our business strategy related to the asset.

• Significant negative changes in the business climate, industry or economic conditions.

• Current period operating losses or negative cash flow combined with a history of similar losses or a forecast that indicates continuing losses associated with the use of an asset.

If events or circumstances indicate that the carrying amount of a long-lived asset or asset group may not be recoverable and the expected undiscounted future cash flows attributable to the asset group are less than the carrying value, an impairment loss equal to the excess of the carrying value of the assets within the asset group over their fair value is recorded. The appropriate asset group is determined based on the lowest level of largely independent cash inflows and outflows for the related assets. Depending on the nature of the primary assets in the asset group, fair value is estimated using one of several approaches including replacement cost, appraised values, market quotes or estimated expected future cash flows using a discount rate commensurate with the risk involved.

Goodwill and Intangible Assets

We account for goodwill on an impairment-only approach and amortize intangible assets with definite useful lives over the benefit period, which approximates straight-line expense over the respective useful lives. We assess qualitative factors to determine whether it is more likely than not that an indefinite-lived intangible asset such as goodwill is impaired as the basis for determining whether a quantitative impairment test is required. We assess definite-lived intangible assets for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be fully recoverable. Whenever we determine that there has been an impairment of goodwill or other intangible assets with indefinite lives, we will record an impairment charge against earnings. We operate as one reporting unit and an impairment charge would equal the excess of the carrying value of goodwill in our one reporting unit over its then fair value. The identification of intangible assets and determination of the fair value and useful lives are subjective in nature and often involve the use of significant estimates and assumptions. The judgments made in determining the estimated useful lives assigned to each class of assets can significantly affect net income. We completed our most recent qualitative analysis during the fourth quarter of 2014 and noted no significant factors existed during the fiscal year to indicate that it was more likely than not that the fair value of the reporting unit is less than its carrying amount.

RESULTS OF OPERATIONS

Net sales increased$162.3 million or 17%, to $1.14 billion for 2014 from $975.9 million for 2013, with sales in each of our end markets benefiting from our acquisition of Symmetricom, Inc. For 2014, we estimate that between 10% and 15% of net

33

sales were derived from products acquired in the Microsemi – FTD transaction. Net sales decreased$36.6 million or 4% between 2013 and 2012, from $1.01 billion for 2012. We did not make any acquisitions in 2013.

Estimated sales by end markets are based on our understanding of end market uses of our products. An estimated breakout of net sales by end markets is as follows (amounts in thousands):

	2014		2013		2012
Aerospace	$	169,613	$	187,006	$	212,293
Communications	407,593		278,126		311,952
Defense & Security	302,714		306,311		286,430
Industrial	258,343		204,501		201,820
Total	$	1,138,263	$	975,944	$	1,012,495

Net sales in the Aerospace end market decreased$17.4 million to $169.6 million in 2014 from $187.0 million in 2013 and decreased$25.3 million between 2013 and 2012 from $212.3 million in 2012. While we believe we are benefiting from significant content growth on newer aircrafts such as the Boeing 787, Airbus A350 and A380, net sales in both 2014 and 2013 were impacted by irregular order rates and a softening satellite market. Going forward, we expect that our differentiated highly-reliable and secure FPGA technology will contribute to growth in this end market and we noted increasing orders for satellite product, which due to long cycle times, will mostly be shipped in the December quarter and beyond. We are optimistic about the long term fundamentals of our Aerospace end market. In the near term, we expect that sales in this end market will remain stable based on our current backlog and shipments made to date, although the mix of satellite products is expected to soften in the upcoming quarter due to extended cycle times.

Net sales in the Communications end market increased$129.5 million to $407.6 million in 2014 from $278.1 million in 2013 and decreased$33.8 million between 2013 and 2012 from $312.0 million in 2012. This end market benefited from contributions from our acquisition of Microsemi – FTD, increased contributions of voice circuit, timing and synchronization products, and higher sales of LTE and gateway applications. In the first quarter of 2014, a U.S. government agency terminated a contract for convenience pursuant to the terms of the contract. We recorded net sales of $25.0 million in 2014 and $8.4 million in 2013 related to this contract. The decrease in net sales between 2013 and 2012 resulted primarily from this end market's sensitivity to macroeconomic conditions and capital expenditure deployment. During the first half of 2013, PoE, power management, RF and voice circuit products were especially impacted by macroeconomic factors, further impacting 2013 results. We expect long term growth in this end market, driven by continued strength from our timing and synchronization products, gateway and enterprise communications applications. With the integration of Microsemi – FTD's products, we believe we have the broadest portfolio of timing products which allows us to better anticipate and serve our customers' needs while improving our market share.

The Defense & Security end market remained stable between 2014 and 2013 with net sales of $302.7 million in 2014 and $306.3 million in 2013. This end market increased$19.9 million between 2013 and 2012 from $286.4 million in 2012. This end market has been increasing sequentially following the rescheduling of orders and industry weakness surrounding the government shutdown that occurred during the first quarter of 2014. The increase in net sales between 2013 and 2012 reflected additional certainty related to the U.S. federal budget in 2013 as compared to 2012. For the upcoming quarter, we note a stronger environment with an improving defense budget, growing foreign military sales and normalization of channel inventories. We believe that procurement plans that emphasize command, control, communications, computers, intelligence, surveillance and reconnaissance equates to growing electronic content. For the upcoming quarter, while we believe that net sales in this end market will grow, we recognize that this market is still impacted by the lingering effects of sequestration.

Net sales in the Industrial end market increased$53.8 million to $258.3 million in 2014 from $204.5 million in 2013 and increased$2.7 million between 2013 and 2012 from $201.8 million in 2012. Between 2014 and 2013, this end market benefited from increased shipments of ultra-low power radios in medical applications, as well as broad based strength for our power products in the plasma and semiconductor capital equipment markets. During 2013 and 2012, bookings were steady for medical, semiconductor capital equipment, industrial lasers, MRI and other broadline industrial applications while bookings for solar applications increased. In the near term, we believe that net sales in this end market will grow against the backdrop of an improving macroeconomic recovery. We expect growth contributions from our chip scale atomic clocks that serve energy exploration applications, ultra-low power RF products, several emerging market opportunities, and our current backlog.

34

Net sales by geographic area based on a customer's ship-to location are as follows (amounts in thousands):

	2014		2013		2012
United States	$	604,358	$	514,632	$	501,257
Europe	163,669		142,343		165,942
Asia	338,448		292,589		320,430
Other	31,788		26,380		24,866
Total	$	1,138,263	$	975,944	$	1,012,495

Gross profit increased$54.3 million between 2014 and 2013, to $611.5 million (53.7% of sales) for 2014 from $557.2 million (57.1% of sales) for 2013 and increased$4.6 million between 2013 and 2012, from $552.6 million (54.6% of sales) for 2012.

During 2014, we recorded expense from manufacturing profit in acquired inventory of $16.6 million related to our acquisition of Microsemi – FTD. We periodically evaluate the profitability of our various offerings. Should the actual or expected profitability fall below an acceptable threshold, we may decide to stop offering a product, in part to reallocate manufacturing, operations, engineering, sales and support resources to products we expect to generate greater returns. During 2014, our evaluation led us to selectively exit product offerings that we believe will continue to lag our overall profitability goals. This resulted in an inventory write-off of $7.9 million. We believe that for many of these products, market dynamics dictate that price is the primary differentiator rather than our value-added core competencies of power, reliability, security and performance. During 2012, we recorded $3.2 million from an inventory write-off related to flooding in Thailand, net of insurance recoveries.

Selling, general and administrative expenses increased$38.5 million between 2014 and 2013 to $240.9 million for 2014 from $202.5 million in 2013 and decreased$9.9 million between 2013 and 2012 from $212.3 million in 2012. The increase in selling, general and administrative expenses was due to the effects of our acquisition of Microsemi – FTD, including acquisition-related costs of $2.9 million in 2014, higher stock-based compensation expense and higher selling expense related to our increase in net sales. We also recorded acquisition related costs of $7.3 million in 2012 that were not incurred in 2013. In connection with the relocation of one of our facilities during 2012, we received cash consideration of $15.0 million and recorded this consideration in selling, general and administrative costs as an offset to incremental costs incurred for the relocation.

We continually update our estimates with respect to our performance stock units. Compared to the estimates used in 2012, our updated estimates had the impact of reducing stock-based compensation expense by $4.0 million for 2013. Updated estimates did not have a significant impact to stock-based compensation expense in 2014.

Research and development expense increased$21.4 million between 2014 and 2013 to $192.0 million in 2014 from $170.6 million in 2013 and increased$2.1 million between 2013 and 2012 from $168.5 million in 2012. While incremental costs from recent acquisitions contributed to increased research and development expenses, increases were partially offset by cost control measures. The principal focus of our research and development activities has been to improve processes and to develop new products that support the growth of our businesses. The spending on research and development was principally to develop new higher-margin application-specific products, including, among others, our process and core architecture development for next generation programmable products, higher power PoE solutions, the continued roadmap development of our industry-leading timing & synchronization products, our silicon germanium (SiGe) RF power amplifier solutions for wireless LAN applications, and the ongoing development of gallium nitride (GaN) and silicon carbide (SiC) power management and RF solutions.

35

Amortization of intangible assets included in operating expenses for each of the three fiscal years in the period ended September 28, 2014 as follows (amounts in thousands):

	2014		2013		2012
Amortizable intangible assets
Completed technology	$	43,863	$	39,005	$	40,621
Customer relationships	44,988		42,589		41,451
Backlog, trade name and other	3,958		3,225		22,684
	$	92,809	$	84,819	$	104,756

The increase between 2014 and 2013 was primarily due to the amortization of acquired intangibles related to our acquisition of Microsemi – FTD, offset by intangible assets that reached their amortizable lives. The decrease in expense in 2013 was primarily from the amortization of backlog related to Microsemi - CMPG that had an amortizable life of one year.

Restructuring charges amounted to $31.5 million in 2014 compared to $9.9 million in 2013 and $8.7 million in 2012. The variances relate to the timing and announcement of restructuring activities, with the year-to-date increase primarily related to severance and facility shutdown costs and actions following our acquisition of Microsemi – FTD.

We periodically evaluate our operations and may make further specific determinations to consolidate, close, sell or divest of additional facilities, operations or product lines, which could be announced at any time. We face major technical challenges in regards to transferring component manufacturing between locations. Before a transfer of manufacturing, we must be finished qualifying the new facility appropriately with the U.S. government or certain customers. In addition, to mitigate the potential for manufacturing disruptions following a closure, we typically build inventory to support the transition process. While we generally plan to retain revenues and income of those operations by transferring the manufacturing elsewhere within Microsemi's subsidiaries, our plans may change at any time based on reassessment of the alternatives and consequences. While we hope to benefit overall from increased gross margins and increased capacity utilization rates at remaining operations, the remaining operations will need to bear the corporate administrative and overhead costs, which are charges to income that had been allocated to the discontinued business units. Moreover, delays in effecting our consolidations could result in changes in the timing of realized costs savings and in greater than anticipated costs incurred to achieve the hoped for longer-range savings.  

The following table reflects the related restructuring activities and the accrued liabilities at the dates below (amounts in thousands):

	Employee Severance			Contract Termination Costs			Other Associated Costs			Total
Balance at September 29, 2013	$	1,826		$	6,936		$	—		$	8,762
Assumed from acquisition	799			1,885			—			2,684
Provisions	13,915			11,437			9,248			34,600
Reversal of prior provision	(339		)	(2,756		)	—			(3,095		)
Cash expenditures	(13,871		)	(8,786		)	(2,535		)	(25,192		)
Other non-cash settlement	1,749			(519		)	(6,713		)	(5,483		)
Balance at September 28, 2014	$	4,079		$	8,197		$	—		$	12,276

We recorded net provisions for employee severance of $13.6 million for 2014, which covered approximately 350 individuals in engineering, manufacturing, administration and sales. Employee severance is expected to be paid within the next twelve months.

We recorded provisions for contract termination costs of $11.4 million for 2014, of which $7.9 million was recorded for the fair value at the cease-use date of operating lease liabilities for space we have exited and $3.0 million was recorded for lease termination costs. Facilities consisted of manufacturing sites, as well as sales, engineering and administrative space. We recorded a $2.8 million reversal of prior provision related to a lease termination agreement executed during 2014 for a manufacturing facility in Scottsdale, Arizona. We recorded provisions for this facility when it ceased production activities in 2011.

36

We recorded provisions for other associated costs for restructuring of $9.2 million for 2014 primarily for facility and equipment impairments and costs incurred to close facilities and relocate operations, and included in this amount was a charge of $1.5 million related to the sale of a property that was previously used primarily as a manufacturing facility.

Interest expense, net, was $27.8 million in 2014, $30.2 million in 2013 and $39.6 million in 2012. Between 2014 and 2013, the decrease in interest expense was primarily due to a lower interest rate on the term loan balance during 2014. The decrease in interest expense between 2013 and 2012 was primarily due to a lower term loan balance, which was $676.0 million at the end of 2013 compared to the term loan balance of $776.0 million at the end of 2012.

Other expense, net, was $2.6 million in 2014 compared to $3.1 million in 2013 and $33.5 million in 2012. The expense recorded in 2012 primarily resulted from debt extinguishment charges related to amendments to our credit facility. These amendments did not impact the net principal balance outstanding. However, as our credit facility is syndicated, we record a debt extinguishment expense with respect to amounts that exit the syndicate in connection with an amendment.

We recorded a provision for income taxes of $0.8 million on pre-tax income of $23.9 million in 2014 compared to a provision for income taxes of $12.4 million on pre-tax income of $56.1 million in 2013, and a provision for income taxes of $15.0 million on pre-tax loss of $14.7 million in 2012. These provisions for income taxes were primarily due to the tax provision on profitable entities in foreign jurisdictions, U.S. tax provision relating to deferred tax liabilities that will not provide future sources of income to realize deferred tax assets, and release of valuation allowance due to additional deferred tax liabilities acquired through purchase accounting. We had cumulative operating losses for the three years ended in 2014 for our U.S. operations and several foreign operations and accordingly, have provided a full valuation allowance on certain of our U.S. and foreign net deferred tax assets as we have determined that it is more likely than not that the tax benefits will not be realized in the future.

During 2014 and 2013 we increased the valuation allowance by $8.9 million and $13.9 million, respectively, which primarily related to deductions for intangible (non-goodwill) amortization, partially offset by the release of valuation allowance due to the deferred tax liabilities acquired. During 2012 we increased the valuation allowance by $179.3 million, which primarily related to the acquisition of Microsemi - CMPG during the quarter ended January 1, 2012, and the recording of the deferred tax assets related to the acquisition.

CAPITAL RESOURCES AND LIQUIDITY

We had $162.2 million and $256.4 million in cash and cash equivalents at September 28, 2014 and September 29, 2013, respectively, and financed our operations with cash generated from operations. A significant portion of our cash and cash equivalents are domiciled in the United States and we believe that we have the ability to raise cash in the United States through existing and new credit facilities or by settling loans receivable with our foreign subsidiaries. We believe that through our cash flows from operations, together with our existing cash and cash equivalents, we will be able to meet our operating and capital requirements for at least the next twelve months.

Our various foreign subsidiaries hold cash and cash equivalents of $102.2 million at September 28, 2014, and as we intend to reinvest certain foreign earnings indefinitely, these balances held outside the United States may not be readily available to meet our domestic cash requirements. We require a substantial amount of cash in the United States for operating requirements, purchases of property and equipment, debt service, and potentially for future acquisitions. If we are unable to meet our domestic cash requirements using domestic cash flows from operations, domestic cash and cash equivalents, or by settling loans receivable with our foreign subsidiaries, it may be necessary for us to consider repatriation of earnings that we have designated as permanently reinvested. Any repatriation of earnings may require us to record additional income tax expense and remit additional taxes, which could have a material effect on our results of operations, cash flows and financial condition.

Net cash provided by operating activities increased$41.7 million to $206.7 million in 2014 from $165.0 million in 2013. During 2014, net cash provided by operating activities was reduced by restructuring activities resulting in payments of $25.2 million. During 2013, net cash provided by operating activities was reduced by restructuring activities resulting in payments of $11.3 million. During 2012, we made payments of $20.5 million in restructuring and severance payments related primarily to Microsemi - CMPG and $9.2 million in transaction related costs.

37

A summary of net cash provided by operating activities in 2014, 2013 and 2012 is as follows (amounts in thousands):

	2014			2013			2012
Net income (loss)	$	23,123		$	43,674		$	(29,675	)
Depreciation and amortization	125,747			113,650			136,050
Provision for doubtful accounts	134			(420		)	(526		)
Deferred income taxes	(21,462		)	(9,660		)	(17,186		)
Valuation allowance on deferred income taxes	17,649			18,841			27,729
Stock-based compensation	43,938			35,242			36,680
Net change in working capital accounts	16,137			(36,313		)	(4,394		)
Net change in other long term assets and liabilities	1,461			(7		)	22,545
Net cash provided by operating activities	$	206,727		$	165,007		$	171,223

Accounts receivable increased$29.1 million to $191.2 million at September 28, 2014 from $162.1 million at September 29, 2013. Inventories increased$43.0 million to $205.0 million at September 28, 2014 from $162.0 million at September 29, 2013. Current liabilities increased$28.0 million to $161.2 million at September 28, 2014 from $133.2 million at September 29, 2013. These increases were due primarily to activity from acquired entities during 2014.

Net cash used in investing activities was $336.0 million in 2014 compared to $37.3 million in 2013 and $625.9 million in 2012. Net cash used in investing activities in 2014 consisted of $39.4 million in purchases of property and equipment and net cash consideration of $337.6 million for the acquisitions, offset by $41.0 million from proceeds from the sales of short term investments. Net cash used in investing activities in 2013 consisted of $37.3 million in purchases of property and equipment. Net cash used in investing activities in 2012 consisted of net cash consideration of $585.2 million and $49.1 million in purchase of property and equipment, offset by $4.4 million in proceeds from the sale of an investment, $3.7 million for the settlement of foreign currency forward and $0.3 million in insurance proceeds.

Net cash provided by (used in) financing activities was $35.0 million in 2014, $(75.6) million in 2013 and $392.4 million in 2012. Net cash provided by financing activities in 2014 primarily consisted of $19.0 million in proceeds from stock awards, borrowings under our Credit Agreement (as defined below) of $289.5 million offset by principal repayments of $178.0 million on our credit facility, debt extinguishment of $89.5 million recorded in conjunction with Amendment No. 5 to our Credit Agreement, a $3.0 million payment to terminate a capital lease, $1.5 million in credit facility issuance costs and $1.5 million in stock settled tax withholdings. Net cash provided by financing activities in 2013 primarily consisted of $25.9 million in proceeds from stock awards, offset by principal prepayments of the credit facility of $100.0 million, $0.9 million in stock settled tax withholdings, and $0.6 million in credit facility issuance and refinancing costs. Net cash provided by financing activities in 2012 primarily consisted of net borrowings of $403.8 million under our credit agreement and $31.3 million in proceeds from stock awards, offset by $41.8 million in credit facility issuance and refinancing costs and $0.9 million in stock settled tax withholdings.

Credit Agreement

We are a party to a senior secured credit facility with Royal Bank of Canada ("RBC") which consists of a term loan facility and a $50.0 million revolving credit facility. As of September 28, 2014, we had $698.0 million in term loan borrowings and no revolving borrowings.

During the quarter ended March 30, 2014, we entered into Amendment No. 5 to our Amended and Restated Credit Agreement dated as of October 13, 2011 (as amended, the "Credit Agreement") with RBC as administrative agent and collateral agent, the other agents party thereto and the lenders referred to therein. The amendment provided for (i) new pricing term for certain of our term loans, (ii) certain modifications to the excess cash flow prepayment and restricted payment provisions, and (iii) an increase in the amount of incremental credit facilities that Microsemi can request to an aggregate amount not to exceed $300.0 million plus certain amounts based on the Company’s leverage ratio. In connection with the amendment, RBC replaced Morgan Stanley Senior Funding, Inc. ("MSSF") as administrative agent and Morgan Stanley & Co. LLC as collateral agent under the Credit Agreement. We accounted for the amendment as a debt modification with respect to amounts that remained in the syndicate and a debt extinguishment with respect to the $89.5 million that exited the syndicate. Accordingly, during the quarter ended March 30, 2014, we recorded debt extinguishment expense of $0.7 million. The amendment did not impact the net principal balance outstanding as amounts that exited the syndicate were replaced.

During the quarter ended December 29, 2013, we entered into a commitment letter with MSSF pursuant to which MSSF committed to provide a $150.0 million incremental term loan under our term loan facility, which MSSF subsequently

38

syndicated during the quarter. The incremental term loan was made available to (i) finance the acquisition of Symmetricom, (ii) repay any existing indebtedness of Symmetricom following the consummation of the merger, and (iii) pay fees and expenses related to the merger. The covenants under the incremental term loan are consistent with those in our existing Credit Agreement. As described above, RBC is the current administrative and collateral agent.

The fair value of our term loans was approximately $693.0 million at September 28, 2014 and $674.3 million at September 29, 2013. We classify this valuation as a Level 2 fair value measurement.

Under our Credit Agreement, we may borrow under a "Base Rate" which approximates the prime rate plus an applicable margin or "Eurodollar Rate" which approximates LIBOR plus an applicable margin. Eurodollar Rate loans are also subject to a Eurodollar Floor. At September 28, 2014, the principal amounts outstanding were Eurodollar Rate loans and interest rate information as of September 28, 2014 were as follows (dollar amounts in thousands):

	Principal Outstanding		Base Rate		Base Rate Margin		Eurodollar Rate Margin		Eurodollar Floor		Applicable Rate
Revolving and swingline loans	$	—	3.25	%	3.25	%	4.25	%	—	%	—	%
Term loan	$	646,375	3.25	%	1.50	%	2.50	%	0.75	%	3.25	%
Incremental term loan	$	51,651	3.25	%	1.75	%	2.75	%	0.75	%	3.50	%

Our term loan facility matures in February 2020 and as of September 28, 2014, there are no scheduled principal repayments until the maturity date. The Credit Agreement stipulates an annual principal payment of a percentage of Excess Cash Flow ("ECF"). The ECF percentage will be 50% if the Consolidated Leverage Ratio (as defined in the Credit Agreement) as of the last day of the fiscal year is equal to or greater than 3.00 to 1.00 and 0% otherwise.

We currently pay an undrawn commitment fee of 0.375% on the unused portion of the revolving facility. If any letters of credit are issued, then we expect to pay a fronting fee equal to 0.25% per annum of the aggregate face amount of each letter of credit and a participation fee on all outstanding letters of credit at a per annum rate equal to the margin then in effect with respect to Eurodollar Rate-based loans on the face amount of such letter of credit.

Our Credit Agreement includes financial covenants requiring a maximum leverage ratio and minimum fixed charge coverage ratio that are applicable only when revolving loans or swingline loans are outstanding at the end of a fiscal quarter and also contains other customary affirmative and negative covenants and events of default. We were in compliance with our covenants as of September 28, 2014.

Contractual Obligations

The following table summarizes our contractual payment obligations and commitments, excluding liability related to uncertain tax positions, at September 28, 2014 (amounts in thousands):

	Payments due by period
	Total		Less than 1 year		1-3 years		3-5 years		More than 5 years
Credit facility	$	698,026	$	—	$	—	$	—	$	698,026
Interest on credit facility	118,828		23,132		46,264		46,264		3,168
Commitment fee on credit facility	160		160		—		—		—
Interest rate swap payments	74		74		—		—		—
Capital leases	351		296		55		—		—
Other long-term liabilities	34,676		5,176		11,575		4,894		13,031
Operating leases	100,951		21,639		34,304		24,363		20,645
Purchase obligations	47,563		31,251		16,312		—		—
Total	$	1,000,629	$	81,728	$	108,510	$	75,521	$	734,870

As of September 28, 2014, we recorded $17.4 million in long-term liabilities for accrued taxes related to uncertain tax positions and are not able to reasonably estimate the timing of the long-term payments, or the amount by which our liability will increase or decrease over time; therefore, the liability related to uncertain tax positions has not been included in the contractual obligations table.

39

Payments of interest on our credit facility in the contractual obligations table assumes that we will make no further term loan principal payments until the maturity date and incur interest at the current effective interest rate. Payments of the commitment fee on credit facility assumes our revolving credit facility remains undrawn.

Off-Balance Sheet Arrangements

As of September 28, 2014, we had no off-balance sheet arrangements that have, or are reasonably likely to have, a current or future material effect on our consolidated financial condition, results of operations, liquidity, capital expenditures or capital resources.

Recently Issued Accounting Standards

In December 2011, the Financial Accounting Standards Board (the "FASB") issued Accounting Standards Update ("ASU") 2011-11, the objective of which is to provide additional disclosures on the effect or potential effect of rights of setoff associated with an entity's recognized assets and recognized liabilities within the scope of the update. The guidance in the update primarily impacts financial instruments and derivatives subject to a master netting arrangement or similar agreement. ASU 2011-11 is effective for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. The adoption of this ASU did not impact our consolidated financial position, results of operations or cash flows.

In February 2013, the FASB issued ASU 2013-04, the objective of which is to provide guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. The guidance in the update requires that these arrangements be recorded as the sum of the amount the reporting entity agreed to pay on the basis of its arrangement among its co-obligors and any additional amount the reporting entity expects to pay on behalf of its co-obligors. ASU 2013-04 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. The adoption of this ASU did not impact our consolidated financial position, results of operations or cash flows.

In July 2013, the FASB issued ASU 2013-11 which requires that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss or a tax credit carryforward, with certain exceptions. ASU 2013-11 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. We are currently assessing the impact of this ASU but adoption will only have the potential of affecting the presentation of unrecognized tax benefits and will not impact our consolidated financial position, results of operations or cash flows.

In April 2014, the FASB issued ASU No. 2014-08 which changes the threshold for reporting discontinued operations and adds additional disclosures. The guidance in this ASU updates the definition of discontinued operations to include the disposal of a component or group of components that is disposed of or is classified as held for sale and represents a strategic shift that has (or will have) a major effect on an entity's operations and financial results. ASU 2014-08 is effective prospectively for all disposals of components of an entity that occur with annual periods beginning on or after December 15, 2014, and interim periods therein. We are currently assessing the impact of this ASU on our consolidated financial position and results of operations.

In May 2014, the FASB issued ASU 2014-09 which provides guidance on how an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services and on accounting for costs to obtain or fulfill a contract with a customer. The ASU also requires expanded disclosure regarding the nature, amount, timing and uncertainty of revenue that is recognized. ASU 2014-09 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2016, and can be adopted either retrospectively to each prior reporting period presented or as a cumulative-effect adjustment as of the date of adoption, with early application not permitted. We are currently assessing the adoption and impact of this ASU on our consolidated financial position and results of operations.

In June 2014, the FASB issued ASU 2014-12 which provides guidance on how to account for shared-based payment awards where the terms of the award provide that a performance target that affects vesting could be achieved after the requisite service period. The ASU requires that a performance target that affects vesting and could be achieved after the requisite service period be treated as a performance condition. ASU 2014-09 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2015, and early adoption is permitted. We are currently assessing the impact of this ASU on our consolidated financial position and results of operations.

In August 2014, the FASB issued ASU 2014-15 which provides guidance on managements responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern within one year after the date that the financial statements are issued (or within one year after the date that the financial statements are available to be issued when applicable) and to provide related footnote disclosures. The amendments in this Update are effective for the annual period

40

ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted. We are currently assessing the impact of this ASU on our consolidated financial position and results of operations.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We are exposed to various forms of market risk, which is the potential loss arising from adverse changes in credit risk, foreign currency exchange rates, interest rates or the stock market.

We conduct a relatively small portion of our business in a number of foreign currencies, principally the European Union euro, Canadian dollar, British pound, Israeli shekel and Chinese renminbi. We may receive some revenues in foreign currencies and purchase some inventory and services in foreign currencies. Accordingly, we are exposed to transaction gains and losses that could result from changes in exchange rates of foreign currencies relative to the U.S. dollar. Because transactions in foreign currencies have represented a relatively small portion of our business, foreign currency fluctuations have not had a material impact historically on our revenues or results of operations. However, there can be no assurance that future fluctuations in the value of foreign currencies will not have material adverse effects on our results of operations, cash flows or financial condition. We have not conducted a foreign currency hedging program thus far. We have considered and may continue to consider the adoption of a foreign currency hedging program.

A significant portion of our sales are or may be derived from U.S. government agencies or customers whose principal sales are to U.S. government agencies which creates concentrations of credit risk. Future sales are subject to the uncertainties of governmental appropriations and national defense policies and priorities, including impacts of sequestration under the Budget Control Act of 2011, constraints of the budgetary process and timing and potential changes in these policies and priorities. Additionally, the long-term outlook for the fiscal position of the U.S. federal government is also uncertain, as illustrated by the 2013 budget negotiations and the shutdown of non-essential U.S. federal government services in October 2013.

We have experienced delays and reduction in appropriations on programs that include our products. Further delays, reductions in or terminations of government contracts or subcontracts, including those caused by any past or future shutdown of the U.S. federal government, could materially and adversely affect our operating results. While we generally function as a subcontractor, further changes in U.S. government procurement regulations and practices, particularly surrounding initiatives to reduce costs, may adversely impact the contracting environment and our operating results.

Generally, the U.S. government and its contractors and subcontractors may terminate their contracts with us at any time, with or without cause. In the first quarter of 2014, the U.S. government terminated for convenience a $75 million contract , for which we received $33.4 million. We have in the past experienced the termination of a contract due to the termination of the underlying government contract. All government contracts are also subject to price renegotiation in accordance with the U.S. Government Renegotiation Act. By reference to such contracts, all of the purchase orders we receive that are related to government contracts are subject to these possible events. In addition, the recent shutdown of non-essential U.S. government services and any future government shutdowns may significantly increase the risk of further contract terminations or renegotiations, and any such termination or renegotiation could have a material adverse impact upon our revenues and results of operations.  

We had one customer that was a distributor of our products, primarily servicing our Defense & Security and Aerospace end markets, that accounted for approximately 20% of net sales in 2012, and any disruption with this distributor could have a material adverse effect on our business, financial condition and results of operations.

In addition, net sales from international markets represent a significant portion of total net sales. Our net sales to international customers represented approximately 47% for 2014 and 2013 and 50% for 2012. These sales were principally to customers in Europe and Asia. We maintain reserves for potential credit losses and such losses have been within management’s expectations.

Under our Credit Agreement, we may borrow under a "Base Rate" which approximates the prime rate plus an applicable margin or "Eurodollar Rate" which approximates LIBOR plus an applicable margin. Eurodollar Rate loans are also subject to a Eurodollar Floor. At September 28, 2014, the principal amounts outstanding were Eurodollar Rate loans and interest rate information as of September 28, 2014 were as follows (dollar amounts in thousands):

	Principal Outstanding		Base Rate		Base Rate Margin		Eurodollar Rate Margin		Eurodollar Floor		Applicable Rate
Revolving and swingline loans	$	—	3.25	%	3.25	%	4.25	%	—	%	—	%
Term loan	$	646,375	3.25	%	1.50	%	2.50	%	0.75	%	3.25	%
Incremental term loan	$	51,651	3.25	%	1.75	%	2.75	%	0.75	%	3.50	%

41

Our term loan facility matures in February 2020 and as of September 28, 2014, there are no scheduled principal repayments until the maturity date. The Credit Agreement stipulates an annual principal payment of a percentage of Excess Cash Flow ("ECF"). The ECF percentage will be 50% if the Consolidated Leverage Ratio (as defined in the Credit Agreement) as of the last day of the fiscal year is equal to or greater than 3.00 to 1.00 and 0% otherwise.

We currently pay an undrawn commitment fee of 0.375% on the unused portion of the revolving facility. If any letters of credit are issued, then we expect to pay a fronting fee equal to 0.25% per annum of the aggregate face amount of each letter of credit and a participation fee on all outstanding letters of credit at a per annum rate equal to the margin then in effect with respect to Eurodollar Rate-based loans on the face amount of such letter of credit.

Our Credit Agreement includes financial covenants requiring a maximum leverage ratio and minimum fixed charge coverage ratio that are applicable only when revolving loans or swingline loans are outstanding at the end of a fiscal quarter and also contains other customary affirmative and negative covenants and events of default. We were in compliance with our covenants as of September 28, 2014.

In connection with our Credit Agreement, in 2011 we entered into interest rate swap agreements for the purpose of minimizing the variability of cash flows in the interest rate payments of our variable rate borrowings. The cash flows received under the interest rate swap agreements are expected to offset the change in cash flows associated with LIBOR rate borrowings between the effective and maturity dates of the swaps. Our outstanding swap agreement has a notional amount of $24.0 million, a fixed rate of 2.21% and expires on January 2015. We classify our interest rate swap balance as a Level 2 fair value measurement. We determined the fair value of our interest rate swap agreements based on mid-market valuations reported to us by the counterparty to the swap agreements. Related to these interest rate swap agreements, we recorded a current liability of $0.1 million as of September 28, 2014. As of September 29, 2013, we had recorded a current liability of $0.3 million and a long-term liability of $0.4 million. We reflect the change in fair value of the swaps through other income (expense), net and recorded income of $0.6 million in 2014 and income of $1.3 million in 2013.

42

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

MICROSEMI CORPORATION AND SUBSIDIARIES

Index to Consolidated Financial Statements

		Page
1	Consolidated Financial Statements
	Report of Independent Registered Public Accounting Firm	44
	Consolidated Balance Sheets at September 28, 2014 and September 29, 2013	45
	Consolidated Statements of Operations and Comprehensive Income for each of the three fiscal years in the period ended September 28, 2014	46
	Consolidated Statements of Stockholders’ Equity for each of the three fiscal years in the period ended September 28, 2014	47
	Consolidated Statements of Cash Flows for each of the three fiscal years in the period ended September 28, 2014	48
	Notes to Consolidated Financial Statements	49
2	Financial Statement Schedule
	Schedule for the fiscal years ended September 28, 2014, September 29, 2013 and September 30, 2012
	II – Valuation and Qualifying Accounts	70
	Financial statement schedules not listed above are either omitted because they are not applicable or the required information is shown in the consolidated financial statements or in the notes thereto.

43

Report of Independent Registered Public Accounting Firm

To the Board of Directors and

Stockholders of Microsemi Corporation:

In our opinion, the consolidated financial statements listed in the accompanying index appearing under Item 8(1) present fairly, in all material respects, the financial position of Microsemi Corporation and its subsidiaries at September 28, 2014 and September 29, 2013 and the results of their operations and their cash flows for each of the three years in the period ended September 28, 2014 in conformity with accounting principles generally accepted in the United States of America. In addition, in our opinion, the financial statement schedule listed in the accompanying index appearing under Item 8(2) presents fairly, in all material respects, the information set forth therein when read in conjunction with the related consolidated financial statements. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of September 28, 2014, based on criteria established in Internal Control – Integrated Framework (1992) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Company’s management is responsible for these financial statements and financial statement schedule, for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in Management’s Report to Stockholders on Internal Control over Financial Reporting. Our responsibility is to express opinions on these financial statements, on the financial statement schedule, and on the Company’s internal control over financial reporting based on our integrated 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 audits to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material respects. Our audits of the financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

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 (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) 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 (iii) 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.

/s/ PricewaterhouseCoopers LLP

Irvine, California

November 13, 2014

44

MICROSEMI CORPORATION AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(amounts in thousands, except per share data)

	September 28, 2014			September 29, 2013
ASSETS
Current assets:
Cash and cash equivalents	$	162,182		$	256,433
Accounts receivable, net of allowances of $22,193 at September 28, 2014 and $17,767 at September 29, 2013	191,168			162,103
Inventories	205,005			161,986
Deferred income taxes, net	27,303			15,904
Other current assets	32,924			26,204
Total current assets	618,582			622,630
Property and equipment, net	148,712			125,158
Goodwill	885,610			790,236
Amortizable intangible assets, net	351,893			315,175
Deferred income taxes, net	23,494			30,203
Other assets	32,805			29,253
TOTAL ASSETS	$	2,061,096		$	1,912,655
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	75,521		$	69,623
Accrued liabilities	85,702			63,609
Total current liabilities	161,223			133,232
Credit facility	698,026			676,000
Deferred income taxes	39,339			26,996
Other long-term liabilities	46,878			44,369
Commitments and contingencies (Note 12)
Stockholders’ equity:
Preferred stock, $1.00 par value; authorized 1,000 shares; none issued	—			—
Common stock, $0.20 par value; 250,000 authorized, 95,633 issued and outstanding at September 28, 2014 and 93,840 issued and outstanding at September 29, 2013	19,126			18,768
Capital in excess of par value of common stock	799,210			737,896
Retained earnings	298,565			275,442
Accumulated other comprehensive loss	(1,271		)	(48		)
Total stockholders’ equity	1,115,630			1,032,058
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	2,061,096		$	1,912,655

The accompanying notes are an integral part of these statements.

45

MICROSEMI CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME

For each of the three fiscal years in the period ended September 28, 2014

(amounts in thousands, except earnings per share)

	2014			2013			2012
Net sales	$	1,138,263		$	975,944		$	1,012,495
Cost of sales	526,760			418,756			459,872
Gross profit	611,503			557,188			552,623
Operating expenses:
Selling, general and administrative	240,946			202,468			212,338
Research and development costs	192,013			170,573			168,516
Amortization of intangible assets	92,809			84,819			104,756
Restructuring and severance charges	31,504			9,901			8,666
Total operating expenses	557,272			467,761			494,276
Operating income	54,231			89,427			58,347
Other (expenses):
Interest expense, net	(27,759		)	(30,238		)	(39,553		)
Other, net	(2,556		)	(3,126		)	(33,519		)
Total other expense	(30,315		)	(33,364		)	(73,072		)
Income (loss) before income taxes	23,916			56,063			(14,725		)
Provision for income taxes	793			12,389			14,950
Net income (loss)	$	23,123		$	43,674		$	(29,675	)
Earnings (loss) per share:
Basic	$	0.25		$	0.49		$	(0.35	)
Diluted	$	0.24		$	0.48		$	(0.35	)
Weighted-average common shares outstanding:
Basic	92,891			89,508			85,837
Diluted	94,511			91,328			85,837
Net income (loss)	$	23,123		$	43,674		$	(29,675	)
Other comprehensive income (loss), net of tax:
Translation adjustment, net of tax	(552		)	913			(373		)
Unrealized actuarial loss on pension benefits, net of tax	(671		)	(218		)	(1,156		)
Other comprehensive income (loss)	(1,223		)	695			(1,529		)
Total comprehensive income (loss)	$	21,900		$	44,369		$	(31,204	)

The accompanying notes are an integral part of these statements.

46

MICROSEMI CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

For each of the three fiscal years in the period ended September 28, 2014

(amounts in thousands)

	Common Stock			Capital in Excess of Par value of Common Stock			Retained Earnings			Accumulated Other Comprehensive Income			Total
	Shares	Amount
Balance at October 2, 2011	86,806	$	17,361	$	612,517		$	261,443		$	786		$	892,107
Proceeds from exercise of stock options	1,902	380		30,831			—			—			31,211
Tax withholding on restricted stock awards	—	—		(808		)	—			—			(808		)
Grants and cancellations of restricted stock awards	1,574	315		(315		)	—			—			—
Issuance of stock awards related to acquisition	—	—		—			—			—			—
Stock-based compensation expense	—	—		36,680			—			—			36,680
Other comprehensive income, net of tax	—	—		—			—			(1,529		)	(1,529		)
Net loss	—	—		—			(29,675		)	—			(29,675		)
Balance at September 30, 2012	90,282	$	18,056	$	678,905		$	231,768		$	(743	)	$	927,986
Proceeds from exercise of stock options	1,944	389		24,908			—			—			25,297
Tax withholding on restricted stock awards	—	—		(836		)	—			—			(836		)
Grants and cancellations of restricted stock awards	1,614	323		(323		)	—			—			—
Stock-based compensation expense	—	—		35,242			—			—			35,242
Other comprehensive income, net of tax	—	—		—			—			695			695
Net income	—	—		—			43,674			—			43,674
Balance at September 29, 2013	93,840	$	18,768	$	737,896		$	275,442		$	(48	)	$	1,032,058
Proceeds from exercise of stock options	1,511	302		18,916			—			—			19,218
Tax withholding on restricted stock awards	—	—		(1,485		)	—			—			(1,485		)
Grants and cancellations of restricted stock awards	282	56		(56		)	—			—			—
Stock-based compensation expense	—	—		43,939			—			—			43,939
Other comprehensive income, net of tax	—	—		—			—			(1,223		)	(1,223		)
Net income	—	—		—			23,123			—			23,123
Balance at September 28, 2014	95,633	$	19,126	$	799,210		$	298,565		$	(1,271	)	$	1,115,630

The accompanying notes are an integral part of these statements.

47

MICROSEMI CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

For each of the three fiscal years in the period ended September 28, 2014

(amounts in thousands)

	2014			2013			2012
Cash flows from operating activities:
Net income (loss)	$	23,123		$	43,674		$	(29,675	)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	125,747			113,650			136,050
Provision for doubtful accounts	134			(420		)	(526		)
Amortization of deferred financing cost	795			914			2,215
Write-off of deferred financing costs	526			2,615			32,275
Settlement of foreign currency forward	—			—			(3,701		)
Loss on disposition or impairment of assets	9,752			—			1,935
Deferred income taxes	(21,462		)	(9,660		)	(17,186		)
Valuation allowance on net deferred income taxes	17,649			18,841			27,729
Stock-based compensation expense	43,938			35,242			36,680
Change in assets and liabilities (net of acquisitions):
Accounts receivable	5,239			(8,493		)	(23,776		)
Inventories	10,263			(2,931		)	12,916
Other current assets	9,191			(2,223		)	27,355
Other assets	(1,893		)	2,361			11,799
Accounts payable	(5,541		)	(6,357		)	16,017
Accrued liabilities	(13,562		)	(17,223		)	(37,355		)
Other long-term liabilities	2,828			(4,983		)	(21,529		)
Net cash provided by operating activities	206,727			165,007			171,223
Cash flows from investing activities:
Purchases of property and equipment	(39,444		)	(37,327		)	(49,079		)
Proceeds from the sale of short term investments	41,001			—			325
Proceeds from the sale of investment	—			—			4,352
Settlement of foreign currency forward	—			—			3,701
Payments for acquisitions, net of cash acquired	(337,564		)	—			(585,218		)
Net cash used in investing activities	(336,007		)	(37,327		)	(625,919		)
Cash flows from financing activities:
Repayments of credit facility	(178,000		)	(99,975		)	(85,625		)
Credit facility issuance costs	(1,521		)	(623		)	(41,790		)
Proceeds from credit facility	289,462			277,539			959,708
Extinguishment of debt	(89,462		)	(277,539		)	(470,296		)
Settlement to terminate capital lease	(3,000		)	—			—
Stock settled tax withholdings	(1,479		)	(879		)	(850		)
Proceeds from stock awards	19,029			25,895			31,253
Net cash (used in) provided by financing activities	35,029			(75,582		)	392,400
Net increase (decrease) in cash and cash equivalents	(94,251		)	52,098			(62,296		)
Cash and cash equivalents at beginning of year	256,433			204,335			266,631
Cash and cash equivalents at end of year	$	162,182		$	256,433		$	204,335
Supplemental disclosure of cash flow information
Cash paid during the year for:
Interest	$	29,231		$	30,886		$	42,178
Income taxes	$	3,945		$	2,777		$	4,407

The accompanying notes are an integral part of these statements.

48

MICROSEMI CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Description of Business

We are a leading designer, manufacturer and marketer of high-performance analog and mixed-signal semiconductor solutions differentiated by power, security, reliability and performance. Our semiconductors manage and control or regulate power, protect against transient voltage spikes and transmit, receive and amplify signals. We offer one of the industry's most comprehensive portfolios of semiconductor technology. Our products include high-performance, high-reliability radio frequency ("RF") and power components, analog and RF integrated circuits, standard and customizable system-on-chip solutions, and mixed-signal and radiation-tolerant field programmable gate arrays. We also offer subsystems and modules that include application-specific power modules and Power-over-Ethernet midspans.

Our products include discrete and integrated component, module, and subsystem solutions that enhance customer designs by improving performance, reliability and power consumption, reducing size or protecting circuits. The principal end markets that we serve include Communications, Defense & Security, Aerospace and Industrial.

Fiscal Year

We report results of operations on the basis of fifty-two and fifty-three week periods. The fiscal year ended on September 28, 2014, September 29, 2013, and September 30, 2012 consisted of fifty-two weeks. In referencing a year, we are referring to the fiscal year ended on the Sunday generally closest to September 30.

Principles of Consolidation and Presentation of Financial Information

The consolidated financial statements include the accounts of Microsemi and our subsidiaries. All intercompany transactions and balances have been eliminated.

Use of Estimates

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the respective reporting periods. Actual results could differ from those estimates.

Reclassifications

Certain prior year amounts have been reclassified to conform to current year presentation.

Cash and Cash Equivalents

We consider all short-term, highly liquid investments with an original maturity of three months or less to be cash equivalents.

Accounts Receivable and Allowance for Doubtful Accounts

Trade accounts receivable are recorded at the invoiced amount and do not bear interest. The accounts receivable amount shown in the balance sheet are trade accounts receivable balances at the respective dates, net of allowance for doubtful accounts. The allowance for doubtful accounts is our best estimate of the amount of probable credit losses in our existing accounts receivable. We determine the allowance based in part on our historical write-off experience and specific review of account balances due. Past due balances are reviewed individually for collectability. All other balances are reviewed on a pooled basis by the age of the receivable. Account balances are charged off against the allowance when we determine that it is probable the receivable will not be recovered. We review our allowance for doubtful accounts quarterly. We do not have any off-balance-sheet credit exposure related to our customers. To date, our allowance for doubtful accounts has generally been within management’s estimates.

Inventories

Inventories are stated at the lower of cost, as determined using the first-in, first-out method, or market. Costs include materials, labor and manufacturing overhead. We evaluate the carrying value of our inventories taking into account such factors as historical and anticipated future sales compared with quantities on hand and the price we expect to obtain for our products in

49

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

their respective markets. We also evaluate the composition of our inventories to identify any slow-moving, excess or obsolete products. Additionally, inventory write-downs are made based upon such judgments for any inventories that are identified as having a net realizable value less than their cost, which is further reduced by related selling expenses. The net realizable value of our inventories for ongoing operations has generally been within management’s estimates. We have recorded inventory write-downs for discontinued product lines that did not meet gross margin targets, products that are being migrated to newer generations, products that service the large capital spending end markets for which demand has declined, products related to facility closures and losses related to flooding of a facility in Thailand.

Fair Value of Financial Assets and Liabilities

Accounting Standards Codification ("ASC") 825 permits entities to elect the fair value option for certain financial assets and financial liabilities. For financial assets or financial liabilities for which an entity elects the fair value option, ASC 825 requires that the entity record the financial asset or financial liability at fair value rather than at historical cost with changes in fair value recorded in the income statement. ASC 825-25 requires that upfront costs and fees related to items for which the fair value option is elected shall be recognized in earnings as incurred and not deferred.

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. ASC 820 establishes a hierarchy for ranking the quality and reliability of the information used to determine fair values and includes the following classifications:

Level 1: Quoted market prices in active markets for identical assets or liabilities.

Level 2: Observable market based inputs or unobservable inputs that are corroborated by market data.

Level 3: Unobservable inputs that are not corroborated by market data.

The following financial assets and liabilities were measured at fair value on a recurring basis using the type of inputs indicated below and are as follows (amounts in thousands):

	Fair Value Measurements Using:
	Total		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
September 29, 2013
Interest rate swap liabilities	$	643	$	—	$	643	$	—
September 28, 2014
Investment in marketable securities	$	4,139	$	4,139	$	—	$	—
Interest rate swap liabilities	$	77	$	—	$	77	$	—

Property and Equipment

Property and equipment are stated at lower of cost or realizable values. Depreciation is computed on the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized over the shorter of the lease terms or the estimated useful lives. Maintenance and repairs are charged to expense as incurred and the costs of additions and betterments that increase the useful lives of the assets are capitalized.

Long-Lived Assets

We assess the impairment of long-lived assets whenever events or changes in circumstances indicate that their carrying value may not be recoverable from the undiscounted estimated future cash flows expected to result from their use. We are required to make judgments and assumptions in identifying those events or changes in circumstances that may trigger impairment. Some of the factors we consider include:

• Significant decrease in the market value of an asset.

• Significant changes in the extent or manner for which the asset is being used or in its physical condition including manufacturing plant closures.

• A significant change, delay or departure in our business strategy related to the asset.

50

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

• Significant negative changes in the business climate, industry or economic conditions.

• Current period operating losses or negative cash flow combined with a history of similar losses or a forecast that indicates continuing losses associated with the use of an asset.

If events or circumstances indicate that the carrying amount of a long-lived asset or asset group may not be recoverable and the expected undiscounted future cash flows attributable to the asset group are less than the carrying value, an impairment loss equal to the excess of the carrying value of the assets within the asset group over their fair value is recorded. The appropriate asset group is determined based on the lowest level of largely independent cash inflows and outflows for the related assets. Depending on the nature of the primary assets in the asset group, fair value is estimated using one of several approaches including replacement cost, appraised values, market quotes or estimated expected future cash flows using a discount rate commensurate with the risk involved.

Goodwill and Intangible Assets

We account for goodwill on an impairment-only approach and amortize intangible assets with definite useful lives over the benefit period, which approximates straight-line expense over the respective useful lives. We assess qualitative factors to determine whether it is more likely than not that an indefinite-lived intangible asset such as goodwill is impaired as the basis for determining whether a quantitative impairment test is required. We assess definite-lived intangible assets for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be fully recoverable. Whenever we determine that there has been an impairment of goodwill or other intangible assets with indefinite lives, we will record an impairment charge against earnings. We operate as one reporting unit and an impairment charge would equal the excess of the carrying value of goodwill in our one reporting unit over its then fair value. The identification of intangible assets and determination of the fair value and useful lives are subjective in nature and often involve the use of significant estimates and assumptions. The judgments made in determining the estimated useful lives assigned to each class of assets can significantly affect net income. We completed our most recent qualitative analysis during the fourth quarter of 2014 and noted no significant factors existed during the fiscal year to indicate that it was more likely than not that the fair value of the reporting unit is less than its carrying amount.

Revenue Recognition, Sales Returns and Allowances

We primarily recognize revenue from customers, including distributors, when title and risk of loss have passed to the customer provided that: 1) evidence of an arrangement exists; 2) delivery has occurred; 3) the fee is fixed or determinable; and 4) collectability is reasonably assured. For substantially all sales, revenue is recognized, net of estimated returns and discounts, at the time the product is shipped.

We enter into distribution agreements that permit rights to limited stock rotations, returns, price protection, and volume purchase and other discounts. We provide an estimated allowance for these rights and record a corresponding reduction in revenue. Our estimated allowance is based on several factors including past history and notification from customers of pending activity. Actual activity under such rights have been within management’s expectations.

We also derive a portion of our revenue from fixed-price contracts. Revenue for these contracts is recorded under a percentage of completion method, which is based on the ratio of total costs incurred to date to estimated total costs at completion. Gross profit expected to be realized on fixed-price contracts is based on periodic estimates of total revenues and costs for each contract. Losses on contracts are accrued when estimated total costs are expected to exceed total revenues. Occasionally, we will enter into contracts on a cost plus fee basis. We recognize revenue based on reimbursements for actual expenses plus the contractually agreed upon fee with the customer.

Research and Development

We expense the cost of research and development as incurred. Research and development expenses principally comprise payroll and related costs, supplies, and the cost of prototypes.

Restructuring Charges

We recognize a liability for restructuring costs when the liability is incurred. The restructuring accruals are based upon management estimates at the time they are recorded and can change depending upon changes in facts and circumstances subsequent to the date the original liability is recorded. The main components of our restructuring charges are workforce reductions and elimination of excess facilities. Workforce-related charges are accrued when it is determined that a liability exists, which is generally when individuals have been notified of their expected termination dates and expected severance payments or when formal severance plans exist, when the severance payments are probable and reasonably estimable. The elimination of excess facilities results in charges for lease termination fees, future contractual commitments to pay lease

51

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

charges net of estimated sublease income, facility remediation costs and moving costs to remove property and equipment from the facilities. We recognize charges for elimination of excess facilities when we have vacated the premises or ceased use of the facility.

Stock-Based Compensation

Compensation expense for stock options and stock appreciation rights was calculated based on the on the service period of the grant and the grant date or assumption date fair value using the Black-Scholes pricing model. All stock appreciation rights we have granted or assumed are stock-settled. Stock options and stock appreciation rights are granted at exercise prices equal to the closing price of our common stock on the date of grant. Assumed stock options and stock appreciation rights are granted at exercise prices determined in accordance with the acquisition agreement. Expected life and forfeiture rates were estimated based primarily on historical data that were stratified between members of the Board of Directors, executive employees and all other recipients. Expected volatility was estimated based on historical volatility using equally weighted daily price observations over a period approximately equal to the expected life of each option. The risk free interest rate is based on the implied yield currently available on U.S. Treasury securities with an equivalent remaining term. No dividends are expected to be paid.

Compensation expense for restricted shares was calculated based on the service period of the grant and the closing price of our common stock on the date of grant. Restricted shares are subject to forfeiture if a participant does not meet length of service requirements. Restricted stock awards granted to employees typically vest over a three year period and awards granted to non-employee directors vest in accordance with our director compensation policy.

Compensation expense for performance stock units was calculated based upon expected achievement of the performance metrics specified in the grant and the closing price of our common stock on the date of grant, or when a grant contains a market condition, the grant date fair value using a Monte Carlo simulation. The Monte Carlo simulation incorporates estimates of the potential outcomes of the market condition on the grant date fair value of each award.

Accounting For Income Taxes

We account for income taxes under the asset and liability method, whereby deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. We evaluate the need to establish a valuation allowance for deferred tax assets based upon the amount of existing temporary differences, the period in which they are expected to be recovered and expected levels of taxable income. A valuation allowance to reduce deferred tax assets are established when it is more likely than not that some or all of the deferred tax assets will not be realized. We recognize uncertain tax positions when they meet a more-likely-than-not threshold. We recognize potential accrued interest and penalties related to unrecognized tax benefits as income tax expense.

We file U.S. federal, state, and foreign income tax returns in jurisdictions with varying statutes of limitations. Fiscal years 2007 to 2013 generally remain subject to examination by federal and most state tax authorities. In significant foreign jurisdictions, the 2010 to 2013 tax years generally remain subject to examination by tax authorities. We establish liabilities for possible assessments by tax authorities resulting from known tax exposures including, but not limited to, international tax issues and certain tax credits. We are currently undergoing an Internal Revenue Service examination as well as certain state examinations. There have been no significant proposed adjustments to date. We do not believe the results of any audits would have a material impact on our financial position, results of operations or cash flows. We will continue to monitor the status of these audits.

Segment Information

We use the management approach for segment disclosure, which designates the internal organization that is used by management for making operating decisions and assessing performance as the source of our reportable segments. We manage our business on the basis of one reportable segment, as a manufacturer of semiconductors in different geographic areas, including the United States, Europe and Asia.

52

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Foreign Currency

All of our significant subsidiaries outside the United States use the United States dollar ("USD") as their functional currency. We have one subsidiary in China that uses the Chinese renminbi as its functional currency. For subsidiaries that use USD as the functional currency, assets and liabilities are remeasured to USD at the exchange rate in effect at the balance sheet date except for non-monetary assets and capital accounts which are measured at historical rates; revenues, expenses, gains and losses are remeasured at rates of exchange that approximate the rates in effect at the transaction date. For subsidiaries that use the local currency as the functional currency, all assets and liabilities are translated to USD using exchange rates in effect at the end of the period. Resulting translation gains or losses are recognized as a component of other comprehensive income. We also conduct a relatively small portion of our business in a number of foreign currencies, principally the European Union euro, Canadian dollar, British pound, Israeli shekel and Chinese renminbi.

Earnings Per Share

Basic earnings per share have been computed based upon the weighted-average number of common shares outstanding during the respective periods. Diluted earnings per share have been computed, when the result is dilutive, using the treasury stock method for stock awards outstanding during the respective periods. Earnings per share for 2014, 2013 and 2012 were calculated as follows (amounts in thousands, except per share data):

	Fiscal Years
	2014		2013		2012
BASIC
Net income (loss)	$	23,123	$	43,674	$	(29,675	)
Weighted-average common shares outstanding	92,891		89,508		85,837
Basic earnings (loss) per share	$	0.25	$	0.49	$	(0.35	)
DILUTED
Net income (loss)	$	23,123	$	43,674	$	(29,675	)
Weighted-average common shares outstanding for basic	92,891		89,508		85,837
Dilutive effect of stock awards	1,620		1,820		—
Weighted-average common shares outstanding on a diluted basis	94,511		91,328		85,837
Diluted earnings (loss) per share	$	0.24	$	0.48	$	(0.35	)

For 2014, 2013 and 2012, 2.8 million, 1.8 million and 5.1 million awards, respectively, were excluded from the computation of diluted EPS as these stock awards would have been anti-dilutive.

Concentration of Credit Risk and International Sales

Concentrations of credit risk exist because we rely on a significant portion of customers whose principal sales are to the U.S. Government. Approximately 27% of total net sales in 2014 were in the Defense & Security end market, with a very significant amount of these sales to customers whose principal sales are to the U.S. Government or to subcontractors whose material sales are to the U.S. Government. We, as a subcontractor, sell our products to higher-tier subcontractors or to prime contractors based upon purchase orders that usually do not contain all of the conditions included in the prime contract with the U.S. Government. However, these sales are usually subject to termination and/or price renegotiations by virtue of their reference to a U.S. Government prime contract. Therefore, we believe that all of our product sales that ultimately are sold to the U.S. Government may be subject to termination, at the convenience of the U.S. Government or to price renegotiations under the Renegotiation Act. In addition, the shutdown of non-essential U.S. Government services in October 2013 and any future government shutdowns may significantly increase the risk of contract terminations or renegotiations. At least one of our contracts has been terminated in the past due to the termination of the underlying government contract. There can be no assurance that we will not have contract termination or price renegotiation in the future, and any such termination or renegotiation could have a material adverse impact upon our revenues and results of operations.

In addition, net sales from international markets represent a significant portion of total net sales. Our net sales to international customers represented approximately 47% for 2014 and 2013 and 50% for 2012. These sales were principally to customers in Europe and Asia. We maintain reserves for potential credit losses and such losses have been within management’s expectations.

53

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Recently Issued Accounting Standards

In December 2011, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU" No. 2011-11, the objective of which is to provide additional disclosures on the effect or potential effect of rights of setoff associated with an entity's recognized assets and recognized liabilities within the scope of the update. The update primarily impacts financial instruments and derivatives subject to a master netting arrangement or similar agreement. ASU No. 2011-11 is effective for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. The adoption of this ASU did not impact our consolidated financial position, results of operations or cash flows.

In February 2013, the FASB issued ASU No. 2013-04, the objective of which is to provide guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. The guidance in the update requires that these arrangements be recorded as the sum of the amount the reporting entity agreed to pay on the basis of its arrangement among its co-obligors and any additional amount the reporting entity expects to pay on behalf of its co-obligors. ASU 2013-04 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. The adoption of this ASU did not impact our consolidated financial position, results of operations or cash flows.

In July 2013, the FASB issued ASU No. 2013-11 which requires that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss or a tax credit carryforward, with certain exceptions. ASU 2013-11 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. We are currently assessing the impact of this ASU but adoption will only have the potential of affecting the presentation of unrecognized tax benefits and will no impact our consolidated financial position, results of operations or cash flows.

In April 2014, the FASB issued ASU No. 2014-08 which changes the threshold for reporting discontinued operations and adds additional disclosures. The guidance in this ASU updates the definition of discontinued operations to include the disposal of a component or group of components that is disposed of or is classified as held for sale and represents a strategic shift that has (or will have) a major effect on an entity's operations and financial results. ASU 2014-08 is effective prospectively for all disposals of components of an entity that occur with annual periods beginning on or after December 15, 2014, and interim periods therein. We are currently assessing the impact of this ASU on our consolidated financial position and results of operations.

In May 2014, the FASB issued ASU 2014-09 which provides guidance on how an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services and on accounting for costs to obtain or fulfill a contract with a customer. The ASU also requires expanded disclosure regarding the nature, amount, timing and uncertainty of revenue that is recognized. ASU 2014-09 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2016, and can be adopted either retrospectively to each prior reporting period presented or as a cumulative-effect adjustment as of the date of adoption, with early application not permitted. We are currently assessing the adoption and impact of this ASU on our consolidated financial position and results of operations.

In June 2014, the FASB issued ASU 2014-12 which provides guidance on how to account for shared-based payment awards where the terms of the award provide that a performance target that affects vesting could be achieved after the requisite service period. The ASU requires that a performance target that affects vesting and could be achieved after the requisite service period be treated as a performance condition. ASU 2014-09 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2015, and early adoption is permitted. We are currently assessing the impact of this ASU on our consolidated financial position and results of operations.

In August 2014, the FASB issued ASU 2014-15 which provides guidance on managements responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern within one year after the date that the financial statements are issued (or within one year after the date that the financial statements are available to be issued when applicable) and to provide related footnote disclosures. The amendments in this Update are effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted. We are currently assessing the impact of this ASU on our consolidated financial position and results of operations.

2. ACQUISITIONS

In November 2013, we, through a wholly owned subsidiary, acquired all the outstanding shares of Symmetricom, Inc. ("Symmetricom" or "Microsemi – FTD") for cash consideration of $312.7 million. We acquired Symmetricom for its world-leading source of highly precise timekeeping technologies and solutions that enable next generation data, voice, mobile and video networks and services.

54

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

We allocated the total consideration to Symmetricom's tangible and intangible assets and liabilities based on their estimated fair values as of the acquisition date and allocated the remaining amount to goodwill. The allocation is as follows (amounts in thousands):

Cash and cash equivalents	$	26,337
Accounts receivable	32,131
Inventories	47,536
Other current assets	57,405
Property and equipment	18,857
Other assets	1,063
Identifiable intangible assets	108,800
Goodwill	67,329
Current liabilities	(36,753		)
Deferred tax liabilities	(6,347		)
Other non-current liabilities	(3,619		)
Total consideration	$	312,739

As of the acquisition date, the gross contractual amount of acquired accounts receivable was $33.4 million and an estimate of contractual cash flows not expected to be collected was $1.3 million.

The valuation of identifiable intangible assets and their estimated useful lives are as follows (dollar amounts in thousands):

	Asset Amount		Weighted Average Useful Life (Years)
Completed technology	$	74,100	9
Customer relationships	30,400		9
Other	4,300		1
	$	108,800

In July 2014, we acquired Mingoa, Ltd., a provider of semiconductor IP for hardware accelerated Ethernet OAM and embedded tests and in September 2014, we acquired Centellax, Inc., a supplier of high-speed analog and RF semiconductor products for the optical communications and Ethernet datacom markets. The estimated consideration for these acquisitions was $51.5 million.

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

We allocated the total estimated consideration of Mingoa's and Centellax's tangible and intangible assets and liabilities based on their estimated fair values as of the acquisition date and allocated the remaining amount to goodwill. The preliminary allocation is as follows (amounts in thousands):

Cash and cash equivalents	$	586
Accounts receivable	2,307
Inventories	5,746
Other current assets	189
Property and equipment	1,898
Other assets	52
Identifiable intangible assets	20,730
Goodwill	28,045
Deferred tax liabilities	(5,530		)
Current liabilities	(2,327		)
Other non-current liabilities	(178		)
Total consideration	$	51,518

As of the acquisition date, the gross contractual amount of acquired accounts receivable of $2.3 million was expected to be fully collectible.

The valuation of identifiable intangible assets and their estimated useful lives are as follows (dollar amounts in thousands):

	Asset Amount		Weighted Average Useful Life (Years)
Completed technology	$	19,100	5
Customer relationships	1,360		4
Other	270		1
	$	20,730

Valuation methodology

The fair value of the identified intangible assets for the acquisitions noted above was estimated by performing a discounted cash flow analysis using the "income" approach. This method includes a forecast of direct revenues and costs associated with the respective intangible assets and charges for economic returns on tangible and intangible assets utilized in cash flow generation. Net cash flows attributable to the identified intangible assets were discounted to their present value at a rate commensurate with the perceived risk. The projected cash flow assumptions considered contractual relationships, customer attrition, eventual development of new technologies and market competition.

The valuation of completed technology and trade names for the acquisitions noted above was based on the relief-from-royalty income approach, a variation of the income approach. The premise of the relief-from-royalty income approach is that if we had not been assigned the rights to the technology and trade names, we would have to pay royalties to continue to exploit the technology and trade names covered by their claims. To arrive at an estimate of royalty charges, the acquired entities' revenue and profit margins were analyzed to determine the ability to pay a royalty. In addition, the license databases were searched for actual royalty terms based on transactions involving technology and trade name licensing. 

The useful lives of completed technology rights are based on the number of years in which net cash flows have been projected. The useful lives of customer relationships are estimated based upon the length of the relationships currently in place, historical attrition patterns and natural growth and diversification of other potential customers. The useful life of a trade name was estimated based on the period in which a benefit could be ascribed to the identified trade names.  

Assumptions used in forecasting cash flows for each of the identified intangible assets included consideration of the following:

• Historical performance including sales and profitability.

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

• Business prospects and industry expectations.

• Estimated economic life of asset.

• Development of new technologies.

• Acquisition of new customers.

• Attrition of existing customers.

• Obsolescence of technology over time.

Depending on the structure of a particular acquisition, goodwill and identifiable intangible assets may not be deductible for tax purposes. We determined that goodwill and identifiable intangible assets related to the acquisitions noted above are not deductible.

The factors that contributed to a purchase price resulting in the recognition of goodwill include:

• The premium paid over market capitalization immediately prior to the merger announcement.

• Our belief that the merger will create a more diverse semiconductor company with expansive offerings which will enable us to expand our product offerings.

• Our belief that both companies are committed to improving cost structures and that our combined efforts after the merger should result in a realization of cost savings and an improvement of overall efficiencies.  

The purchase price allocation described above is preliminary for the Mingoa and Centellax acquisitions, primarily with respect to tax contingency matters. A final determination of fair values of assets acquired and liabilities assumed relating to the transaction could differ from the preliminary purchase price allocation and if material differences exist they could result in retrospective revisions to the purchase price allocation. We utilized the straight line method of amortization for completed technology, customer relationships and trade name.

Supplemental pro forma data (unaudited)

The following supplemental pro forma data summarizes the results of operations for 2014 and 2013, as if we completed the acquisitions listed above as of the first day of 2013. The supplemental pro forma data reports actual operating results, adjusted to include the pro forma effect and timing of the impact in cost of goods sold from manufacturing profit in acquired inventory, acquisition-related expenses, restructuring and severance charges, amortization expense of identified intangible assets, incremental interest expense and the related tax effects of the acquisition. Post-acquisition net sales and earnings on a standalone basis are impracticable to determine, as on the acquisition date, we implemented a plan developed prior to the completion of the acquisition and began to immediately integrate the acquisitions into existing operations, engineering groups, sales distribution networks and management structure. The supplemental pro forma information presented is for illustrative purposes only and is not necessarily indicative of the financial position or results of operations that would have been realized if the transaction had been completed on the date indicated, does not reflect synergies that might have been achieved, nor is it indicative of future operating results or financial position. The pro forma adjustments are based upon currently available information and certain assumptions that we believe are reasonable under the circumstances. Supplemental pro forma data is as follows (amounts in thousands, except per share data):

	2014		2013
Net sales	$	1,180,484	$	1,195,356
Net income	$	25,478	$	22,638
Earnings per share:
Basic	$	0.27	$	0.25
Diluted	$	0.27	$	0.25

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

3. INVENTORIES

Inventories are summarized as follows (amounts in thousands):

	September 28, 2014		September 29, 2013
Raw materials	$	55,280	$	36,436
Work in progress	94,044		86,762
Finished goods	55,681		38,788
	$	205,005	$	161,986

We periodically evaluate the profitability of our various offerings. Should the actual or expected profitability fall below an acceptable threshold, we may decide to stop offering a product, in part to reallocate manufacturing, operations, engineering, sales and support resources to products we expect will generate greater returns. During 2014, our evaluation led us to selectively exit product offerings that we believe will continue to lag our overall profitability goals. This resulted in an inventory write-off of $7.9 million. We believe that for many of these products, market dynamics dictate that price is the primary differentiator rather than our value-added core competencies of power, reliability, security and performance.

4. PROPERTY AND EQUIPMENT

Property and equipment consisted of the following components (dollar amounts in thousands):

	Asset Life	September 28, 2014			September 29, 2013
Buildings	20-40 years	$	40,109		$	37,773
Machinery and equipment	3-10 years	339,800			328,652
Furniture and fixtures	5-10 years	9,917			10,918
Leasehold improvements	Shorter of asset life or life of lease	46,967			38,698
		436,793			416,041
Accumulated depreciation		(303,758		)	(303,529		)
Land		2,084			1,725
Construction in progress		13,593			10,921
		$	148,712		$	125,158

Depreciation expense was $32.9 million, $28.8 million and $31.3 million in 2014, 2013 and 2012, respectively.

5. GOODWILL AND INTANGIBLE ASSETS, NET

Goodwill and intangible assets, net consisted of the following components (amounts in thousands):

	September 28, 2014					September 29, 2013					Life (in years)
	Gross Carrying Value		Accumulated Amortization			Gross Carrying Value		Accumulated Amortization
Amortizable intangible assets
Completed technology	$	402,670	$	(201,337	)	$	309,470	$	(157,472	)	2 to 15
Customer relationships	301,790		(152,462		)	270,030		(107,474		)	4 to 15
Backlog, trade name and other	17,917		(16,685		)	13,341		(12,720		)	1 to 5
	$	722,377	$	(370,484	)	$	592,841	$	(277,666	)
Non-amortizing intangible assets
Goodwill	$	885,610				$	790,236

58

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

A reconciliation of our goodwill for the years ended September 28, 2014 and September 29, 2013 is as follows (amounts in thousands):

	September 28, 2014		September 29, 2013
Beginning balance	$	790,236	$	790,236
Additions from acquisitions	95,374		—
Ending balance	$	885,610	$	790,236

Amortization of intangible assets included in operating expenses for each of the three fiscal years in the period ended September 28, 2014 is as follows (amounts in thousands):

	2014		2013		2012
Amortizable intangible assets
Completed technology	$	43,863	$	39,005	$	40,621
Customer relationships	44,988		42,589		41,451
Backlog, trade name and other	3,958		3,225		22,684
	$	92,809	$	84,819	$	104,756

Estimated amortization expense in each of the five succeeding years and thereafter is as follows (amounts in thousands):

	2015		2016		2017		2018		2019		Thereafter
Amortization expense	$	88,186	$	83,638	$	80,473	$	37,838	$	15,573	$	46,185

6.        ACCRUED LIABILITIES

Accrued liabilities consisted of the following components (amounts in thousands):

	September 28, 2014		September 29, 2013
Payroll, bonus and employee benefits	$	34,278	$	24,649
Deferred revenue	11,430		5,565
Outside services	9,616		10,258
Warranties	6,882		2,809
Restructuring and severance	8,439		8,587
Commissions	4,026		2,799
Income taxes	971		2,291
Licenses	1,107		786
Sales and property taxes	1,081		785
Interest	67		1,276
Other	7,805		3,804
	$	85,702	$	63,609

Accrued warranties of $6.9 million includes a $3.8 million balance assumed as part of the Microsemi – FTD acquisition.

59

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

7. INCOME TAXES

Pretax income (loss) was generated from the following sources for each of the three fiscal years in the period ended September 28, 2014 (amounts in thousands):

	2014			2013			2012
Domestic	$	(62,702	)	$	(38,709	)	$	(88,964	)
Foreign	86,618			94,772			74,239
Total	$	23,916		$	56,063		$	(14,725	)

The provision for income taxes consisted of the following components for each of the three fiscal years in the period ended September 28, 2014 (amounts in thousands):

	2014			2013		2012
Current:
Federal	$	—		$	812	$	(16	)
State	264			806		228
Foreign	3,914			3,115		3,458
Deferred:
Federal	(6,534		)	2,306		5,061
State	(155		)	1,385		2,255
Foreign	3,304			3,965		3,964
	$	793		$	12,389	$	14,950

We recorded a provision for income taxes of $0.8 million on pretax income of $23.9 million in 2014 compared to a provision for income taxes of $12.4 million on pre-tax income of $56.1 million in 2013, and a provision for income taxes of $15.0 million on pretax loss of $14.7 million in 2012. These provisions for income taxes were primarily due to the tax provision on profitable entities in foreign jurisdictions, U.S. tax provision relating to deferred tax liabilities that will not provide future sources of income to realize deferred tax assets, and release of valuation allowance due to additional deferred tax liabilities acquired through purchase accounting. We had cumulative operating losses for the three years ended in 2014 for our U.S. operations and several foreign operations and accordingly, have provided a full valuation allowance on certain of our U.S. and foreign net deferred tax assets as we have determined that it is more likely than not that the tax benefits will not be realized in the future.

During 2014 and 2013 we increased the valuation allowance by $8.9 million and $13.9 million, respectively, which primarily related to deductions for intangible (non-goodwill) amortization, partially offset by the release of valuation allowance due to the deferred tax liabilities acquired. During 2012 we increased the valuation allowance by $179.3 million, which primarily related to the acquisition of Microsemi - CMPG during the quarter ended January 1, 2012, and the recording of the deferred tax assets related to the acquisition.

We have federal and state net operating losses ("NOLs") of approximately $308.7 million and $170.0 million, respectively, that begin expiring in 2021 and 2014, respectively. Of the total NOL carryforward, $34.6 million related to the excess tax benefit from employee stock compensation and stockholders' equity will increase by $34.6 million if and when such excess tax benefits are ultimately realized. We have foreign NOLs of approximately $259.2 million that begin expiring in 2032. We have federal and state research and experimentation credits of approximately $45.7 million and $66.1 million, respectively. We have foreign research and experimentation credits of approximately $81.5 million that begin expiring in 2017 and incentive deductions of approximately $29.0 million. that carry forward indefinitely. We have federal foreign tax credits of approximately $4.7 million. We have federal and state enterprise zone credits, federal and state investment tax credits, and alternative minimum tax credits totaling $9.0 million that begin expiring in 2015. The utilization of NOLs and credits acquired through an acquisition may be subject to limitations due to change in control.

No provision has been made for future income taxes on undistributed earnings of foreign operations (except for insignificant jurisdictions) since they have been indefinitely reinvested in these operations. Determination of the amount of unrecognized deferred tax liability for temporary differences related to these undistributed earnings is not practicable, as such liability is dependent upon a number of factors, including foreign tax credit position that would exist at the time any remittance would occur. At the end of 2014 and 2013, these undistributed earnings aggregated approximately $430.4 million and $357.4 million, respectively.

60

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

The following is a reconciliation of income tax computed at the federal statutory rate to our actual tax expense for each of the three fiscal years in the period ended September 28, 2014 (amounts in thousands):

	2014			2013			2012
Tax computed at federal statutory rate	$	8,372		$	19,622		$	(5,153	)
State taxes, net of federal impact	(1,064		)	(1,468		)	(3,244		)
Foreign income taxed at different rates	(24,667		)	(20,523		)	(18,207		)
Tax credits and incentives	(2,757		)	(5,418		)	(1,096		)
Stock award compensation	1,157			197			295
Unrecognized tax benefits	1,410			(392		)	1,981
U.S. tax on foreign income	4,061			1,374			18,150
Income tax return to provision	(189		)	(875		)	(3,153		)
Non-deductible permanent items	869			167			1,682
Pre-acquisition loss carry forwards	(11,414		)	—			(4,043		)
Expiration of tax attributes	2,931			—			—
Foreign declared dividend	3,642			—			—
Withholding taxes	300			700			—
Other differences, net	493			164			9
Valuation allowance	17,649			18,841			27,729
	$	793		$	12,389		$	14,950

The tax effected deferred tax assets (liabilities) are comprised of the following components (amounts in thousands):

	September 28, 2014			September 29, 2013
Accounts receivable, net	$	1,173		$	945
Inventories	14,501			9,264
Accrued employee benefit expenses	8,806			4,230
Net operating losses	149,571			140,555
Tax credits and incentives	144,219			140,069
Accrued other expenses	11,397			6,287
Deferred equity compensation	16,725			14,845
Property and equipment, net	3,115			3,242
Other assets	11,753			9,797
Total deferred tax assets	361,260			329,234
Intangible assets	(127,213		)	(100,050		)
Foreign declared dividend	(3,642		)	—
Total deferred tax liabilities	(130,855		)	(100,050		)
Less valuation allowance	(218,946		)	(210,073		)
	$	11,459		$	19,111

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (amounts in thousands):

	September 28, 2014			September 29, 2013			September 30, 2012
Beginning gross unrecognized tax benefits	$	69,571		$	58,016		$	32,370
Additions based on tax positions related to the current year	2,389			3,238			12,786
Additions based on current year acquisitions	28,861			—			10,615
Additions based on tax positions of prior years	459			12,845			2,605
Reductions based on tax positions of prior years	—			(2,805		)	(169		)
Reductions for lapses and settlements	(3,609		)	(1,723		)	(191		)
Ending gross unrecognized tax benefit	$	97,671		$	69,571		$	58,016

61

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

We recognize interest and penalties accrued related to unrecognized tax benefits in tax expense. During the years ended September 28, 2014, September 29, 2013, and September 30, 2012, we recognized approximately $0.7 million, $0.0 million, and $2.0 million, respectively, in interest and penalties. The cumulative interest and penalties at September 28, 2014 and September 29, 2013 were $6.6 million and $5.9 million, respectively.

Unrecognized tax benefits of $59.8 million (including interest) at September 28, 2014 would impact the effective tax rate if recognized after the valuation allowance has been released. We anticipate a decrease in gross unrecognized tax benefits of approximately $19.7 million within the next twelve months based on federal, state, and foreign expirations in various jurisdictions.

We file U.S. federal, state, and foreign income tax returns in jurisdictions with varying statutes of limitations. Fiscal years 2007 to 2013 generally remain subject to examination by federal and most state tax authorities. In significant foreign jurisdictions, the 2010 to 2013 tax years generally remain subject to examination by tax authorities. We establish liabilities for possible assessments by tax authorities resulting from known tax exposures including, but not limited to, international tax issues and certain tax credits. We are currently undergoing an Internal Revenue Service examination as well as certain state examinations. There have been no significant proposed adjustments to date. As of September 28, 2014, the IRS has raised questions primarily related to transfer pricing. Management believes that the Company's position is appropriate and that an adequate provision has been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in the Company's tax audits are resolved in a manner not consistent with management's expectations, the Company would be required to adjust its provision for income tax in the period such resolution occurs. While the Company believes its reported results are accurate, any significant adjustments could have a material adverse effect on the Company's results of operations, cash flows and financial position if not resolved within expectations.

8. CREDIT AGREEMENT AND RELATED INSTRUMENTS

Credit Agreement

We are a party to a senior secured credit facility with Royal Bank of Canada ("RBC") which consists of a term loan facility and a $50.0 million revolving credit facility. As of September 28, 2014, we had $698.0 million in term loan borrowings and no revolving borrowings.

During the quarter ended March 30, 2014, we entered into Amendment No. 5 to our Amended and Restated Credit Agreement dated as of October 13, 2011 (as amended, the "Credit Agreement") with RBC as administrative agent and collateral agent, the other agents party thereto and the lenders referred to therein. The amendment provided for (i) new pricing term for certain of our term loans, (ii) certain modifications to the excess cash flow prepayment and restricted payment provisions, and (iii) an increase in the amount of incremental credit facilities that Microsemi can request to an aggregate amount not to exceed $300.0 million plus certain amounts based on the Company’s leverage ratio. In connection with the amendment, RBC replaced Morgan Stanley Senior Funding, Inc. ("MSSF") as administrative agent and Morgan Stanley & Co. LLC as collateral agent under the Credit Agreement. We accounted for the amendment as a debt modification with respect to amounts that remained in the syndicate and a debt extinguishment with respect to the $89.5 million that exited the syndicate. Accordingly, during the quarter ended March 30, 2014, we recorded debt extinguishment expense of $0.7 million. The amendment did not impact the net principal balance outstanding as amounts that exited the syndicate were replaced.

During the quarter ended December 29, 2013, we entered into a commitment letter with MSSF pursuant to which MSSF committed to provide a $150.0 million incremental term loan under our term loan facility, which MSSF subsequently syndicated during the quarter. The incremental term loan was made available to (i) finance the acquisition of Symmetricom, (ii) repay any existing indebtedness of Symmetricom following the consummation of the merger, and (iii) pay fees and expenses related to the merger. The covenants under the incremental term loan are consistent with those in our existing Credit Agreement. As described above, RBC is the current administrative and collateral agent.

The fair value of our term loans was approximately $693.0 million at September 28, 2014 and $674.3 million at September 29, 2013. We classify this valuation as a Level 2 fair value measurement.

Under our Credit Agreement, we may borrow under a "Base Rate" which approximates the prime rate plus an applicable margin or "Eurodollar Rate" which approximates LIBOR plus an applicable margin. Eurodollar Rate loans are also subject to a Eurodollar Floor. At September 28, 2014, the principal amounts outstanding were Eurodollar Rate loans and interest rate information as of September 28, 2014 were as follows (dollar amounts in thousands):

62

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

	Principal Outstanding		Base Rate		Base Rate Margin		Eurodollar Rate Margin		Eurodollar Floor		Applicable Rate
Revolving and swingline loans	$	—	3.25	%	3.25	%	4.25	%	—	%	—	%
Term loan	$	646,375	3.25	%	1.50	%	2.50	%	0.75	%	3.25	%
Incremental term loan	$	51,651	3.25	%	1.75	%	2.75	%	0.75	%	3.50	%

Our term loan facility matures in February 2020 and as of September 28, 2014, there are no scheduled principal repayments until the maturity date. The Credit Agreement stipulates an annual principal payment of a percentage of Excess Cash Flow ("ECF"). The ECF percentage will be 50% if the Consolidated Leverage Ratio (as defined in the Credit Agreement) as of the last day of the fiscal year is equal to or greater than 3.00 to 1.00 and 0% otherwise.

We currently pay an undrawn commitment fee of 0.375% on the unused portion of the revolving facility. If any letters of credit are issued, then we expect to pay a fronting fee equal to 0.25% per annum of the aggregate face amount of each letter of credit and a participation fee on all outstanding letters of credit at a per annum rate equal to the margin then in effect with respect to Eurodollar Rate-based loans on the face amount of such letter of credit.

Our Credit Agreement includes financial covenants requiring a maximum leverage ratio and minimum fixed charge coverage ratio that are applicable only when revolving loans or swingline loans are outstanding at the end of a fiscal quarter and also contains other customary affirmative and negative covenants and events of default. We were in compliance with our covenants as of September 28, 2014.

Interest Rate Swap Agreement

In connection with our Credit Agreement in 2011, we entered into interest rate swap agreements for the purpose of minimizing the variability of cash flows in the interest rate payments of our variable rate borrowings. The cash flows received under the interest rate swap agreements are expected to offset the change in cash flows associated with LIBOR rate borrowings between the effective and maturity dates of the swaps. Our outstanding swap agreement has a notional amount of $24.0 million, a fixed rate of 2.21% and expires in January 2015. We classify our interest rate swap balance as a Level 2 fair value measurement. We determined the fair value of our interest rate swap agreements based on mid-market valuations reported to us by the counterparty to the swap agreements. As of September 29, 2013, we had recorded a current liability of $0.3 million and a long-term liability of $0.4 million. We reflect the change in fair value of the swaps through other income (expense), net and recorded income of $0.6 million in 2014 and income of $1.3 million in 2013.

9. OTHER LONG-TERM LIABILITIES

Other long-term liabilities consisted of (amounts in thousands):

	September 28, 2014		September 29, 2013
Unrecognized tax benefits	$	17,376	$	16,546
Deferred rent	13,671		15,510
Pension and retirement	8,853		7,164
Restructuring	3,836		—
Environmental	200		372
Capital leases	55		2,873
Interest rate swaps	—		368
Other	2,887		1,536
Total	$	46,878	$	44,369

10. STOCK-BASED COMPENSATION

Stock Based Compensation

In February 2014, our stockholders approved an amendment to the Microsemi Corporation 2008 Performance Incentive Plan (the "2008 Plan"). The amendment a) increased the share limit by an additional 4.8 million shares so that the amended aggregate share limit for the 2008 Plan is 33.3 million shares; b) extended the Company's authority to grant awards under the 2008 Plan intended to qualify as "performance-based awards" within the meaning of Section 162(m) of the U.S. Internal Revenue Code through the first annual meeting of stockholders that occurs in 2019. The 2008 Plan's termination date of

63

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

December 5, 2021 remained unchanged, as did the number of shares counted against the share limit for every one share issued in connection with a full-value award, which remained 2.41.

Except as described in this paragraph, shares that are subject to or underlie awards which expire or for any reason, are canceled or terminated, are forfeited, fail to vest, or for any other reason are not paid or delivered under the 2008 Plan will again be available for subsequent awards under the 2008 Plan. Shares that are exchanged by a participant or withheld by the Company as full or partial payment in connection with any award granted under the 2008 Plan that is a full-value award, as well as any shares exchanged by a participant or withheld by the Company or one of its subsidiaries to satisfy the tax withholding obligations related to any full-value award granted under the 2008 Plan will be available for subsequent awards under the 2008 Plan. Shares that are exchanged by a participant or withheld by the Company to pay the exercise price of a stock option or stock appreciation right granted under the 2008 Plan, as well as any shares exchanged or withheld to satisfy the tax withholding obligations related to any such award, will not be available for subsequent awards under the 2008 Plan.

Awards authorized by the 2008 Plan include options, stock appreciation rights, restricted stock, stock bonuses, stock units, performance share awards, and other cash- or share-based awards. The shares issued under the 2008 Plan may be newly issued or shares held by Microsemi as treasury stock. The maximum term of a stock option grant or a stock appreciation right granted under the 2008 Plan is 6 years.

Stock-based compensation expense was $43.9 million in 2014, $35.2 million in 2013 and $36.7 million in 2012. At September 28, 2014, unamortized compensation expense related to unvested stock awards was $46.6 million. The weighted average period over which compensation expense related to these grants will be recognized is 1.4 years.

Remaining share-units available for grant, assuming the issuance of performance units at target, at September 28, 2014, September 29, 2013 and September 30, 2012 under the 2008 Plan were 14.1 million, 12.2 million and 16.0 million, respectively.

Stock Options and Stock Appreciation Rights

Compensation expense for stock options and stock appreciation rights was calculated based on the grant or assumption date using the Black-Scholes pricing model. All stock appreciation rights we have granted or assumed are stock-settled. Stock options and stock appreciation rights are granted at exercise prices equal to the closing price of our common stock on the date of grant. Assumed stock options and stock appreciation rights are granted at exercise prices determined in accordance with the acquisition agreement. Expected life was estimated based on historical exercise data that was stratified between members of the Board of Directors, executive employees and all other recipients. Expected volatility was estimated based on historical volatility using equally weighted daily price observations over a period approximately equal to the expected life of each option. The risk free interest rate is based on the implied yield currently available on U.S. Treasury securities with an equivalent remaining term. No dividends are expected to be paid.

64

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Activity and price information related to stock options and stock appreciation rights are as follows (quantity and intrinsic value in thousands):

	Quantity		Weighted-Average Exercise Price		Intrinsic Value		Weighted Average Remaining Life (Years)
Outstanding at October 2, 2011	9,474		$	19.84	$	12,684	3.1
Exercised	(1,933	)	$	16.82	$	7,619
Forfeited	(567	)	$	24.99
Outstanding at September 30, 2012	6,974		$	20.26	21,557		2.5
Exercised	(1,944	)	$	14.16	$	16,956
Forfeited	(348	)	$	24.33
Outstanding at September 29, 2013	4,682		$	22.49	$	14,702	1.7
Assumed from acquisition	578		$	20.08
Exercised	(1,228	)	$	16.39	$	16,956
Forfeited	(1,364	)	$	26.55
Outstanding at September 28, 2014	2,668		$	22.70	$	7,413	2.0
Exercisable at September 28, 2014	2,404		$	22.91	6,280		1.6
Exercisable and expected to vest after September 28, 2014	2,666		$	22.7	$	7,405	2.0

In connection with the acquisition Symmetricom, Inc. in 2014, we assumed stock options and converted them to Microsemi awards in accordance with the merger agreement.

Quantity and weighted-average exercise prices related to stock options and stock appreciation rights outstanding as of September 28, 2014 and stratified by exercise price are as follows (quantity in thousands):

	Exercisable			Outstanding
Exercise Price	Quantity	Weighted-Average Exercise Price		Quantity	Weighted-Average Exercise Price
Less than or equal to $20.00	521	$	14.33	607	$	14.34
Greater than $20.00	1,870	$	25.30	2,061	$	25.16
	2,391	$	22.91	2,668	$	22.70

Weighted-average fair value and weighted-average assumptions used in the calculation of compensation expense for assumed grants in 2014 are as follows. There were no stock options or stock appreciation rights granted or assumed in 2012 or 2013.

Fair Value		Risk Free Rate		Expected Dividend Yield		Expected Life (Years)	Expected Volatility
$	20.08	0.5	%	—	%	2.7	31.0	%

Restricted Stock Awards

Compensation expense for restricted stock awards was calculated based on the closing price of our common stock on the date of grant. Restricted stock awards are subject to forfeiture if a participant does not meet length of service requirements. Restricted stock awards granted to employees typically vest over a three year period and awards granted to non-employee directors vest on grant date in accordance with our director compensation policy.

65

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Activity and price information related to restricted stock awards are as follows (quantity in thousands):

	Quantity		Weighted-Average Grant Price
Outstanding at October 2, 2011	2,350		$	19.44
Granted	1,656		$	19.41
Vested	(1,281	)	$	19.27
Forfeited	(70	)	$	19.34
Outstanding at September 30, 2012	2,655		$	19.51
Granted	1,887		$	20.39
Vested	(1,363	)	$	19.10
Forfeited	(115	)	$	20.16
Outstanding at September 29, 2013	3,064		$	20.21
Granted	1,589		$	24.67
Vested	(1,393	)	$	20.41
Forfeited	(186	)	$	22.11
Outstanding at September 28, 2014	3,074		$	22.31

Performance Units

Compensation expense for performance stock units was calculated based upon expected achievement of the performance metrics specified in the grant and the closing price of our common stock on the date of grant, or when a grant contains a market condition, the grant date fair value using a Monte Carlo simulation. Vesting of performance units issued in 2013 and 2014 contain a market condition and the Monte Carlo simulation incorporates estimates of the potential outcomes of the market condition on the date fair value of each award.

Performance units granted in 2012 vested based on our growth in net sales and earnings per share (subject to certain adjustments) for 2012 and 2013 in comparison with the growth in net sales and adjusted earnings per share over the same period for a peer group selected by the Compensation Committee. For these performance stock units, 50% of each performance-based award opportunity will be subject to the net sales metric for the performance period and 50% will be subject to the earnings per share metric for the performance period. In November 2013, the Compensation Committee determined that 86% of the target number of units vested at the time of the committee's determination (which represents a vesting percentage of 116% based on the committee’s determination, minus the 30% of the target number of units that vested based on 2012 performance).

Performance units granted in 2013 are eligible to vest based on our achievement of net sales and earnings per share (subject to certain adjustments) levels for 2013, 2014 and 2015. For these performance stock units, 25% of each performance-based award opportunity will be subject to the net sales metric for the performance period and 75% will be subject to the earnings per share metric for the performance period. In addition, the vesting of the award will also be determined in part by our total shareholder return over the performance period covered by the award relative to the peer group. A portion of the award may be earned based on performance in each year of the performance period. In November 2013, the Compensation Committee determined that our performance did not exceed minimum thresholds. Accordingly, no performance units granted in 2013 vested.

Performance units granted in 2014 vested based on our growth in net sales and earnings per share (subject to certain adjustments) for 2014, 2015, and 2016 in comparison with the growth in net sales and adjusted earnings per share over the same period for a peer group selected by the Compensation Committee. For these performance stock units, 40% of each performance-based award opportunity will be subject to the net sales metric for the performance period and 60% will be subject to the earnings per share metric for the performance period. In addition, the vesting of the award will also be determined in part by our total shareholder return over the performance period covered by the award relative to the peer group. A portion of the award may be earned based on performance in each year of the performance period.

66

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Activity and price information related to performance units are as follows (quantity report at target and in thousands):

	Quantity		Weighted-Average Grant Price
Outstanding at September 30, 2012	350		$	17.77
Granted	350		$	21.62
Vested	(105	)	$	17.77
Outstanding at September 29, 2013	595		$	20.03
Granted	332		$	26.27
Vesting in excess of target	56		$	17.77
Vested	(301	)	$	17.77
Outstanding at September 28, 2014	682		$	23.88

11. EMPLOYEE BENEFIT PLANS

We sponsor 401(k) savings plans whereby participating employees may elect to contribute up to 50% of their eligible wages up to the statutory contribution limit. Employees 50 years of age and older may contribute a further 75% of their eligible wages up to the statutory contribution limit. During 2014, employer contributions were $3.6 million.

In certain entities outside the United States, we provide defined-benefit and defined contribution plans, many in accordance with local regulations. We typically deposit employer contributions with third party trustees, insurance trust funds, or government-managed accounts.

We assumed a pension plan in Germany related to our acquisition of Microsemi - CMPG in 2012 that covers employees with over ten years of active service and provides benefits based on length of service and final pensionable earnings. There are no segregated pension fund assets under this plan.  The pension liability is insured and we have pledged the insurance contracts to the pensioners. Accordingly, the contracts are now considered to be a plan asset. As the plan assets are insurance contracts, the Company does not control the investment strategy and thus cannot influence the return on investments. The insurance payments are guaranteed by the insurer and should the insurer default on its obligation, the security fund for insurance companies in Germany would assume the contracts. As of September 28, 2014, the fair value of plan assets was $5.1 million and benefit obligations were $7.6 million. During 2014, we recorded an unrealized actuarial loss on pension benefits of $0.7 million in other comprehensive income due to a reduction in the discount rate assumption used to determine benefit obligations from 3.2% to 2.1%. There are no employer contributions expected in the next twelve months.

12. COMMITMENTS AND CONTINGENCIES

Operating Leases

We occupy premises and lease equipment under operating lease agreements expiring through 2029. The aggregate undiscounted future minimum rental payments under these leases are as follows (amounts in thousands):

2015		2016		2017		2018		2019		Thereafter
$	21,639	$	19,154	$	15,150	$	12,652	$	11,711	$	20,645

Lease expense charged to income was $23.5 million in 2014, $20.2 million in 2013 and $21.4 million in 2012.

Contingencies

We are generally self-insured for losses and liabilities related to workers’ compensation and employer’s liability insurance. Accrued workers’ compensation liability was $1.9 million and $1.5 million at September 28, 2014 and September 29, 2013, respectively. Our self-insurance accruals are based on estimates and, while we believe that the amounts accrued are adequate, the ultimate claims may be in excess of the amounts provided.

We are involved in pending litigation, administrative and similar matters arising out of the normal conduct of our business, including litigation relating to acquisitions, employment matters, commercial transactions, contracts, environmental matters and matters related to compliance with governmental regulations. The ultimate aggregate amount of monetary liability or financial impact with respect to these matters is subject to many uncertainties and is therefore not predictable with assurance. In the opinion of management, the final outcome of these matters, if they are adverse, will not have a material adverse effect on

67

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

our financial position, results of operations or cash flows. However, there can be no assurance with respect to such result, and monetary liability, financial impact or other sanctions imposed on us from these matters could differ materially from those projected.

13. RESTRUCTURING AND SEVERANCE CHARGES

The following table reflects the related restructuring activities and the accrued liabilities at the dates below (amounts in thousands):

	Employee Severance			Contract Termination Costs			Other Associated Costs			Total
Balance at September 29, 2013	$	1,826		$	6,936		$	—		$	8,762
Assumed from acquisition	799			1,885			—			2,684
Provisions	13,915			11,437			9,248			34,600
Reversal of prior provision	(339		)	(2,756		)	—			(3,095		)
Cash expenditures	(13,871		)	(8,786		)	(2,535		)	(25,192		)
Other non-cash settlement	1,749			(519		)	(6,713		)	(5,483		)
Balance at September 28, 2014	$	4,079		$	8,197		$	—		$	12,276

We recorded net provisions for employee severance of $13.6 million for 2014, which covered approximately 350 individuals in engineering, manufacturing, administration and sales. Employee severance is expected to be paid within the next twelve months.

We recorded provisions for contract termination costs of $11.4 million for 2014, of which $7.9 million was recorded for the fair value at the cease-use date of operating lease liabilities for space we have exited and $3.0 million was recorded for lease termination costs. Facilities consisted of manufacturing sites, as well as sales, engineering and administrative space. We recorded a $2.8 million reversal of prior provision related to a lease termination agreement executed during 2014 for a manufacturing facility in Scottsdale, Arizona. We recorded provisions for this facility when it ceased production activities in 2011.

We recorded net provisions for other associated costs for restructuring of $9.2 million for 2014 primarily for facility and equipment impairments and costs incurred to close facilities and relocate operations, and included in this amount was a charge of $1.5 million related to the sale of a property that was previously used primarily as a manufacturing facility.

14. SEGMENT INFORMATION

We manage our business on the basis of one reportable segment, as a manufacturer of semiconductors in different geographic areas, including the United States, Europe and Asia. We derive revenue from sales of our high-performance analog/mixed-signal integrated circuits and power and high-reliability individual component semiconductors. These products include individual components as well as integrated circuit solutions that enhance customer designs by improving performance, reliability and battery optimization, reducing size or protecting circuits. The principal markets that we serve include Aerospace, Communications, Defense & Security, and Industrial. We evaluate sales by end-market based on our understanding of end market uses of our products.

68

MICROSEMI CORPORATION AND SUBSIDIARIES 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Net sales based on a customer's ship-to location and by estimated end market are as follows (amounts in thousands):

	2014		2013		2012
Net Sales:
United States	$	604,358	$	514,632	$	501,257
Europe	163,669		142,343		165,942
Asia	338,448		292,589		320,430
Other	31,788		26,380		24,866
Total	$	1,138,263	$	975,944	$	1,012,495
Aerospace	$	169,613	$	187,006	$	212,293
Communications	407,593		278,126		311,952
Defense & Security	302,714		306,311		286,430
Industrial	258,343		204,501		201,820
Total	$	1,138,263	$	975,944	$	1,012,495

As a percentage of consolidated net sales, customers with a ship-to location in Hong Kong totaled 11% in 2012 and there were no countries outside the United States exceeding 10% in 2014 and 2013.

Property and equipment, net by geographic area are as follows (amounts in thousands):

	2014		2013		2012
United States	$	117,867	$	100,736	$	93,496
Europe	12,167		12,558		13,253
Asia	16,766		10,209		7,912
Other	1,912		1,655		1,485
Total	$	148,712	$	125,158	$	116,146

15. UNAUDITED SELECTED QUARTERLY FINANCIAL DATA

Selected quarterly financial data are as follows (amounts in thousands, except earnings per share):

	Quarters ended in fiscal year 2014
	September 28, 2014		June 29, 2014			March 30, 2014			December 29, 2013
Net sales	$	303,315	$	292,301		$	287,016		$	255,631
Gross profit	$	170,966	$	153,590		$	148,639		$	138,308
Net income (loss)	$	32,797	$	(4,293	)	$	(6,759	)	$	1,379
Basic earnings (loss) per share	$	0.35	$	(0.05	)	$	(0.07	)	$	0.01
Diluted earnings (loss) per share	$	0.34	$	(0.05	)	$	(0.07	)	$	0.01

	Quarters ended in fiscal year 2013
	September 29, 2013		June 30, 2013		March 31, 2013			December 30, 2012
Net sales	$	250,383	$	242,630	$	235,333		$	247,598
Gross profit	$	142,838	$	138,312	$	133,465		$	142,573
Net income (loss)	$	14,086	$	18,279	$	(2,905	)	$	14,214
Basic earnings (loss) per share	$	0.16	$	0.20	$	(0.03	)	$	0.16
Diluted earnings (loss) per share	$	0.15	$	0.20	$	(0.03	)	$	0.16

69

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS

(amounts in thousands)

Column A	Column B		Column C			Column D			Column E			Column F
Classification	Balance at beginning of period		Charged to costs and expenses			Charged to other accounts			Deductions- recoveries and write-offs			Balance at end of period
Allowance for doubtful accounts
September 30, 2012	$	2,149	$	(497	)	$	—		$	(29	)	$	1,623
September 29, 2013	$	1,623	$	(43	)	$	—		$	(377	)	$	1,203
September 28, 2014	$	1,203	$	564		$	—		$	(430	)	$	1,337
Tax valuation allowance
September 30, 2012	$	16,803	$	27,729		$	151,615		$	—		$	196,147
September 29, 2013	$	196,147	$	18,841		$	(4,915	)	$	—		$	210,073
September 28, 2014	$	210,073	$	17,649		$	(8,776	)	$	—		$	218,946

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

Inapplicable

ITEM 9A. CONTROLS AND PROCEDURES

(a) Evaluation of disclosure controls and procedures.

As of September 28, 2014, under the supervision and with the participation of the Company’s management, including the Company’s Chief Executive Officer and Chief Financial Officer, the Company carried out an evaluation of the effectiveness of the design and operation of the Company’s disclosure controls and procedures as defined in Exchange Act Rules 13a-15(e) and 15d-15(e). These disclosure controls and procedures are designed to ensure that the information required to be disclosed by the Company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified by the SEC’s rules and forms, and that the information is accumulated and communicated to the Company’s management, including the Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Based upon their evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the Company’s disclosure controls and procedures were effective as of September 28, 2014.

(b) Changes in internal control over financial reporting.

There have been no changes in the Company’s internal control over financial reporting during the fiscal quarter ended September 28, 2014 that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

(c) Management’s Report on Internal Control over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting. 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 risks that controls may become inadequate because of changes in conditions or that the degree of compliance with the policies or procedures may deteriorate.

Under the supervision and with the participation of management, including the Company’s Chief Executive Officer and Chief Financial Officer, the Company conducted an evaluation of the effectiveness of its internal control over financial reporting as defined in Exchange Act Rules 13a-15(f) and 15d-15(f) based on criteria established in Internal Control – Integrated Framework (1992) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Based on the Company’s evaluation, management concluded that the Company’s internal control over financial reporting was effective as of September 28, 2014.

PricewaterhouseCoopers LLP, the Company’s independent registered public accounting firm that audited the consolidated financial statements included in this Form 10-K, has audited the effectiveness of the Company’s internal control over financial reporting, as stated within their report which appears herein.

70

ITEM 9B. OTHER INFORMATION

Inapplicable.

PART III

The Company intends to file a definitive proxy statement with the Securities and Exchange Commission pursuant to Regulation 14A within 120 days after the Company’s fiscal year ended September 28, 2014. Except to the extent set forth below, the information required by Items 10, 11, 12, 13 and 14 will be set forth in that definitive proxy statement and such information is hereby incorporated by reference into such respective items in this Annual Report on Form 10-K.

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

Except as provided below, the information required by this item is incorporated by reference from the Company’s Proxy Statement for the 2015 Annual Meeting of Stockholders under the headings "Election of Directors," "Executive Officers," "Corporate Governance, Board Meetings and Committees," and "Section 16(a) Beneficial Ownership Reporting Compliance."

Our Board has adopted a Code of Ethics that applies to all of our employees, directors and officers, including our principal executive officer, principal financial officer, principal accounting officer and other senior financial officers. The Code of Ethics, as applied to our principal executive officer, principal financial officer and principal accounting officer, constitutes our "code of ethics" within the meaning of Section 406 of the Sarbanes-Oxley Act and is our "code of conduct" within the meaning of the listing standards of the NASDAQ Stock Market.

Our Code of Ethics is available on our website under the Corporate Governance section of the Investors tab at http://www.microsemi.com. You may request copies of this document, which will be provided free of charge, by writing to Investor Relations, Microsemi Corporation, One Enterprise, Aliso Viejo, California 92656. In addition, waivers from, and amendments to, our Code of Ethics that apply to our directors and executive officers, including our principal executive officer, principal financial officer, principal accounting officer or persons performing similar functions, will be timely posted on our website under the Corporate Governance section of the Investors tab at http://www.microsemi.com.

ITEM 11. EXECUTIVE COMPENSATION

The information required by this item is incorporated by reference from the Company’s Proxy Statement for the 2015 Annual Meeting of Stockholders under the headings "Executive Compensation" and "Director Compensation," "Compensation Committee Interlocks and Insider Participation," and "Report of the Compensation Committee."

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

The information required by this item is incorporated by reference from the Company’s Proxy Statement for the 2015 Annual Meeting of Stockholders under the heading "Security Ownership of Certain Beneficial Owners and Management" and "Equity Compensation Plan Information."

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

The information required by this item is incorporated by reference from the Company’s Proxy Statement for the 2015 Annual Meeting of Stockholders under the heading "Corporate Governance, Board Meetings and Committees" and "Transactions with Related Persons."

ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES

The information required by this item is incorporated by reference from the Company’s Proxy Statement for the 2015 Annual Meeting of Stockholders under the heading "Audit Matters."

71

PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a) 1.    Financial Statements. See Index under Item 8.

2.    Financial Statement Schedule. See Index under Item 8.    

(b) Exhibits

The exhibits to this report are listed in the Exhibit Index

(c) Financial statements of unconsolidated affiliates.

None

72

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.

	Microsemi Corporation
By	/s/ John W. Hohener
	John W. Hohener
	Executive Vice President, Chief Financial Officer, Secretary and Treasurer (Principal Financial and Accounting Officer and duly authorized to sign on behalf of the Registrant)

Dated: November 13, 2014

73

POWER OF ATTORNEY

The undersigned hereby constitutes and appoints James J. Peterson and John W. Hohener, or either of them, his true and lawful attorney-in-fact and agent, with full power of substitution and re-substitution, to sign the report on Form 10-K and any or all amendments thereto and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming all that said attorney-in-fact, or his substitute or substitutes, may do or cause to be done by virtue hereof in any and all capacities.

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

Signature	Title	Date
/s/ James J. Peterson	Chairman of the Board and Chief Executive Officer (Principal Executive Officer)	November 13, 2014
James J. Peterson
/s/ John W. Hohener	Executive Vice President, Chief Financial Officer, Secretary and Treasurer (Principal Financial and Accounting Officer)	November 13, 2014
John W. Hohener
/s/ Dennis R. Leibel	Director (Lead Independent Director)	November 13, 2014
Dennis R. Leibel
/s/ Thomas R. Anderson	Director	November 13, 2014
Thomas R. Anderson
/s/ William E. Bendush	Director	November 13, 2014
William E. Bendush
/s/ Paul F. Folino	Director	November 13, 2014
Paul F. Folino
/s/ William L. Healey	Director	November 13, 2014
William L. Healey
/s/ Matthew E. Massengill	Director	November 13, 2014
Matthew E. Massengill

74

EXHIBIT INDEX

Exhibit Number	Description
2.2	Agreement and Plan of Merger dated as of October 21, 2013 by and among Microsemi Corporation, PETT Acquisition Corp. and Symmetricom, Inc.(21)
3.1	Amended and Restated Certificate of Incorporation of Microsemi Corporation(19)*
3.2	Third Amended and Restated Bylaws of Microsemi Corporation(35)*
4.1	Specimen certificate for the shares of common stock of Microsemi Corporation(6)
10.1	Microsemi Corporation 1987 Stock Plan, and amendments thereto(4)*
10.1.1	Form of Employee Stock Option Agreement prior to August 17, 2004(3)*
10.1.2	Form of Employee Stock Option Agreement from and after August 17, 2004(3)*
10.1.3	Form of Employee Stock Option Agreement from and after September 26, 2005(5)*
10.1.4	Form of Employee Stock Option Agreement from and after February 22, 2006(7)*
10.1.5	Form of Employee Stock Option Agreement from and after March 28, 2006(9)*
10.1.6	Form of Non-Employee Stock Option Agreement from and after February 22, 2006(7)*
10.1.8	Form of Stock Option Exchange Grant and Replacement Option Agreement(1)*
10.1.8	Form of Amendment of Eligible Unvested Options(4)*
10.1.9	Form of Notice of Restricted Stock Award and Restricted Stock Agreement(10)*
10.1.10	Form of Notice of Restricted Stock Award and Employee Restricted Stock Agreement(11)*
10.1.11	Form of Notice of Restricted Stock Award and Non-Employee Restricted Stock Agreement(11)*
10.2	Microsemi Corporation 2008 Performance Incentive Plan, as amended(34)*
10.2.1	Form of Notice of Grant of Restricted Stock Award and Terms and Conditions under 2008 Performance Incentive Plan(13)*
10.2.2	Form of Notice of Grant and Terms and Conditions of Stock Option under 2008 Performance Incentive Plan(13)*
10.2.3	Form of Performance Stock Unit Award Agreement - Fiscal 2013-2015(30)*

75

10.2.4	Form of Performance Stock Unit Award Agreement - Fiscal 2014-2016(36)*
10.3	Microsemi Corporation Cash Bonus Plan(13)*
10.4	Fiscal 2014 Executive Non-Equity Incentive Plan(37)*
10.5	Executive Retention Agreement dated March 31, 2009 between James J. Peterson and Microsemi Corporation(15)*
10.6	Executive Retention Agreement dated March 31, 2009 between John W. Hohener and Microsemi Corporation (15)*
10.7	Form of Executive Retention Agreement for Named Executive Officers other than James J. Peterson and John W. Hohener(15)*
10.8	Form of Amendment to Executive Retention Agreement for Named Executive Officers to Address Section IRC Section 409A Considerations (38)*
10.11	Summary of Compensation Arrangements for Named Executive Officers†
10.12	Directors’ Compensation Policy†*
10.14	Form of Officers and Directors Indemnification Agreement(12)*
10.15	Settlement Agreement dated July 8, 1998 by and between Microsemi Corp. - Colorado, FMC Corporation, Siemens Microelectronics, Inc. and Coors Porcelain Company(8)
10.16	Credit Agreement, dated as of November 2, 2010, by and among Microsemi Corporation, Morgan Stanley Senior Funding, Inc., Morgan Stanley & Co. Incorporated, East West Bank, Raymond James Bank, FSB and the lenders referred to therein(17)
10.16.1	Amendment No. 1 to Credit Agreement, dated as of March 2, 2011, by and among Microsemi Corporation, Morgan Stanley Senior Funding, Inc. and the lenders referred to therein(20)
10.16.2	Amendment No. 2 to Credit Agreement, dated as of October 13, 2011, by and among Microsemi Corporation, Morgan Stanley Senior Funding, Inc., Morgan Stanley & Co. LLC and the lenders referred to therein(22)
10.16.3	Amendment No. 3 to Credit Agreement, dated as of February 17, 2012, by and among Microsemi Corporation, Morgan Stanley Senior Funding, Inc., Morgan Stanley & Co. LLC and the lenders referred to therein.(25)
10.16.4	Amendment No. 4 to Credit Agreement, dated as of February 19, 2013, by and among Microsemi Corporation, Morgan Stanley Senior Funding, Inc. and the lenders referred to therein.(28)
10.16.5	Increase Term Joinder, dated as of February 17, 2012, by and among Microsemi Corporation and Morgan Stanley Senior Funding, Inc.(26)
10.16.6	Amendment No. 5 to Credit Agreement, dated as of March 18, 2014, by and among Microsemi Corporation, Royal Bank of Canada, as administrative agent and collateral agent, the other agents party thereto and the lenders referred to therein.(32)
10.17	Commitment Letter, dated October 21, 2013, between Microsemi Corporation and Morgan Stanley Senior Funding, Inc.(29)
21	List of Subsidiaries†

76

23	Consent of Independent Registered Public Accounting Firm†
24	Power of Attorney (see signature page)
31.1	Certification of Chief Executive Officer Pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a) as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, dated November 13, 2014†
31.2	Certification of Chief Financial Officer Pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a) as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, dated November 13, 2014†
32	Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, dated November 13, 2014†
101	The following financial statements are from Microsemi Corporation’s Annual Report on Form 10-K for the fiscal year ended September 28, 2014, formatted in XBRL (eXtensible Business Reporting Language): (i) Consolidated Balance Sheets; (ii) Consolidated Statements of Operations and Comprehensive Income; (iii) Consolidated Statements of Stockholders’ Equity; (iv) Consolidated Statements of Cash Flows; and (v) Notes to Consolidated Financial Statements.†
†	Filed with this report.
*	Management contract or compensatory plan or arrangement required to be filed as an exhibit pursuant to applicable rules of the Securities and Exchange Commission.
(1)	Incorporated by reference to the indicated Exhibit to the Registrant’s Quarterly Report on Form 10-Q (File No. 0-08866) as filed with the Commission on February 9, 1998.
(1)	Incorporated by reference to Exhibit 99(D)(2) to the Registrant’s Tender Offer Statement on Schedule TO (File No. 005-20930) as filed on November 1, 2002.
(2)	Incorporated by reference to the indicated Exhibit to the Registrant’s Annual Report on Form 10-K (File No. 0-08866) as filed with the Commission on December 19, 2002.
(3)	Incorporated by reference to the indicated Exhibit to the Registrant’s Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on September 24, 2004.
(4)	Incorporated by reference to Exhibit 99(D)(1) to the Registrant’s Tender Offer Statement on Schedule TO (File No. 005-30432) as filed with the Commission on August 17, 2005.
(5)	Incorporated by reference to the indicated Exhibit to the Registrant’s Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on September 28, 2005.
(6)	Incorporated by reference to the indicated Exhibit to the Registrant’s Annual Report on Form 10-K (File No. 0-08866) as filed with the Commission on December 16, 2005.
(7)	Incorporated by reference to the indicated Exhibit to the Registrant’s Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on February 28, 2006.
(8)	Incorporated by reference to the indicated Exhibit to the Registrant’s Pre-Effective Amendment No. 2 to Form S-4 (Reg. No. 333-130655) as filed with the Commission on March 3, 2006.
(9)	Incorporated by reference to the indicated Exhibit to the Registrant’s Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on April 3, 2006.
(10)	Incorporated by reference to the indicated Exhibit to the Registrant’s Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on April 4, 2007.
(11)	Incorporated by reference to the indicated Exhibit to the Registrant’s Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on October 3, 2007.
(12)	Incorporated by reference to the indicated Exhibit to the Registrant’s Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on September 3, 2008.
(13)	Incorporated by reference to the indicated Exhibit to the Registrant’s Annual Report on Form 10-K (File No. 0-08866) as filed with the Commission on November 21, 2008.
(14)	Incorporated by reference to the indicated Exhibit to the Registrant’s Quarterly Report on Form 10-Q (File No. 0-08866) as filed with the Commission on April 30, 2009.
(15)	Incorporated by reference to the indicated Exhibit to the Registrant’s Quarterly Report on Form 10-Q (File No. 0-08866) as filed with the Commission on July 30, 2009.

77

(16)	Incorporated by reference to the indicated Exhibit to the Registrant’s Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on October 4, 2010.
(17)	Incorporated by reference to the indicated Exhibit to the Registrant’s Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on November 5, 2010.
(18)	Incorporated by reference to the indicated Exhibit to the Registrant’s Annual Report on Form 10-K (File No. 0-08866) as filed with the Commission on November 23, 2010.
(19)	Incorporated by reference to the indicated Exhibit to the Registrant’s Quarterly Report on Form 10-Q (File No. 0-08866) as filed with the Commission on February 10, 2011.
(20)	Incorporated by reference to the Exhibit to the Registrant’s Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on March 4, 2011.
(21)	Incorporated by reference to Exhibit 2.1 of Symmetricom Inc.’s Current Report on Form 8-K (File No. 0-02287) filed with the Commission October 22, 2013.
(22)	Incorporated by reference to the Exhibit to the Registrant’s Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on October 19, 2011.
(23)	Incorporated by reference to the indicated Exhibit to the Registrant's Quarterly Report on Form 10-Q (File No. 0-08866) as filed with the Commission on February 8, 2011.
(24)	Incorporated by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on February 21, 2012.
(25)	Incorporated by reference to Exhibit 10.2 to the Registrant's Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on February 21, 2012.
(26)	Incorporated by reference to the indicated Exhibit to the Registrant's Quarterly Report on Form 10-Q (File No. 0-08866) as filed with the Commission on February 8, 2012.
(27)	Incorporated by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on February 22, 2013.
(28)	Incorporated by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on October 25, 2013.
(29)	Incorporated by reference to Exhibit 10.1 to the Registrant’s Quarterly Report on Form 10-Q (File No. 0-08866) as filed with the Commission on January 30, 2013.
(30)	Incorporated by reference to the indicated Exhibit to the Registrant’s Annual Report on Form 10-K (File No. 0-08866) as filed with the Commission on November 21, 2012.
(31)	Incorporated by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on March 24, 2014.
(32)	Incorporated by reference to the indicated Exhibit to the Registrant’s Annual Report on Form 10-K (File No. 0-08866) as filed with the Commission on November 14, 2013.
(33)	Incorporated by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on February 13, 2014.
(34)	Incorporated by reference to Exhibit 3.3 to the Registrant's Current Report on Form 8-K (File No. 0-08866) as filed with the Commission on November 15, 2013.
(35)	Incorporated by reference to Exhibit 10.1 to the Registrant's Quarterly Report on Form 10-Q (File No. 0-08866) as filed with the Commission on January 29, 2014.
(36)	Incorporated by reference to Exhibit 10.2 to the Registrant's Quarterly Report on Form 10-Q (File No. 0-08866) as filed with the Commission on January 29, 2014.
(37)	Incorporated by reference to Exhibit 10.3 to the Registrant’s Quarterly Report on Form 10-Q (File No. 0-08866) as filed with the Commission on January 30, 2013.

78

EX-10.11

EXHIBIT 10.11

MICROSEMI CORPORATION

Summary of Compensation Arrangements for Named Executive Officers

Base Salaries. The current annual base salaries for the named executive officers of Microsemi Corporation (the “Company”) are as follows:

Name	Job Title	Base Salary
James J. Peterson	President and Chief Executive Officer	$	735,000
Paul H. Pickle	Executive Vice President, Chief Operating Officer	$	400,000
John W. Hohener	Executive Vice President, Chief Financial Officer, Secretary and Treasurer	$	398,600
Steven G. Litchfield	Executive Vice President, Chief Strategy Officer	$	356,400
David Goren	Senior Vice President of Business Affairs, Legal and Compliance	$	340,000

Additional Compensation. In addition to the base salaries noted in the table above, the named executive officers are also entitled to participate in various Company plans, and are subject to other written agreements, in each case as set forth in exhibits to the Company's filings with the Securities and Exchange Commission. In addition, the named executive officers also receive certain perquisites and other personal benefits as disclosed in the Company's annual proxy statement.

EX-10.12

EXHIBIT 10.12

MICROSEMI CORPORATION

DIRECTORS’ COMPENSATION POLICY

As Amended Effective September 9, 2014

Directors of Microsemi Corporation, a Delaware corporation (the “Company”), who are not employed by the Company or one of its subsidiaries (“non-employee directors”) are entitled to the compensation set forth below for their service as a member of the Board of Directors (the “Board”) of the Company. This policy is effective as of September 9, 2014 and supersedes all prior policies concerning compensation of the Company’s non-employee directors as to their service from and after that time. The Board has the right to amend this policy from time to time.

Cash Compensation
Annual Retainer	$	60,000
Additional Independent Chair/Lead Independent Director Retainer (1)	$	80,000
Additional Committee Member Retainers
Audit Committee	$	12,000
Compensation Committee	$	10,000
Governance and Nominating Committee	$	7,500
Additional Committee Chair Retainers
Audit Committee Chair	$	15,000
Compensation Committee Chair	$	10,000
Governance and Nominating Committee Chair	$	7,500
Meeting Fee (per meeting)	$	1,500
Equity Compensation
Annual Equity Award	$	145,000
New Director Award	$	145,000

(1) The Additional Independent Chair/Lead Independent Director will be reduced from $100,000 to $80,000, effective with the first quarter of the Company’s 2015 fiscal yearand will be reduced from $80,000 to $60,000, effective with the first quarter of the Company’s 2016 fiscal year.

Cash Compensation

Each non-employee director will be entitled to a cash retainer while serving on the Board in the amount set forth above (the “Annual Retainer”). A non-employee director who serves as the Chair of the Board (or Lead Independent Director, if applicable) will be entitled to an additional cash retainer while serving in that position in the amount set forth above (the “Additional Independent Chair/Lead Independent Director Retainer”). A non-employee director who serves as a member of the Audit Committee, the Compensation Committee or the Governance and Nominating Committee of the Board (including, for purposes of clarity, the Chair of each such Committee) will be entitled to an additional cash retainer while serving in that position in the applicable amount set forth above (an “Additional Committee Member Retainer”). A non-employee director who serves as the Chair of the Audit Committee, the Compensation Committee or the Governance and Nominating Committee of the Board will be entitled to an additional cash retainer while serving in that position in the applicable amount set forth above (an “Additional Committee Chair Retainer”). To the extent a non-employee director attends more than eight (8) meetings of the Board, or of the Audit Committee, the Compensation Committee or the Governance and Nominating Committee of the Board, during a particular fiscal year of the Company, and regardless of whether such attendance is in person or telephonic and regardless of length (in the case of committee meetings, only if the non-employee director is a member of such committee), the non-employee director will be entitled to a fee for attendance at each meeting of the Board or particular committee, as the case may be, by the non-employee director in excess of eight (8) during that fiscal year in the applicable amount set forth above (a “Meeting Fee”).

The amounts of the Annual Retainer, Additional Independent Chair/Lead Independent Director Retainer, Additional Committee Member Retainer and Additional Committee Chair Retainers reflected above are expressed as annualized amounts. These retainers will be paid on a quarterly basis, at the end of each quarter in arrears, and will be pro-rated if a non-employee director serves (or serves in the corresponding position, as the case may be) for only a portion of the quarter (with the proration

based on the number of calendar days in the quarter that the director served as a non-employee director or held the particular position, as the case may be). Meeting fees for attendance at one or more meetings that occur in a particular quarter will be paid at the end of that quarter.

Equity Awards

Annual Equity Awards for Continuing Board Members

On each date set forth below, each non-employee director continuing in office after that date will automatically be granted an award of Company common stock determined by dividing the Annual Equity Award grant value set forth above by the Average Closing Price as of that date (rounded down to the nearest whole share). For purposes of this policy, “Average Closing Price” as of a particular date means the average of the last/closing market prices (in regular trading on the principal exchange or market on which the Company’s common stock is then listed or admitted to trade) for a share of the Company’s common stock over the period of twenty consecutive trading days ending with the date in question (or on the immediately preceding trading day if that day is not a trading day). In determining the Average Closing Price, the last/closing prices of a share of Company common stock taken into account will be equitably adjusted to account for (and mitigate the effect of) any split or reverse split of the Company’s common stock, or any dividend of Company common stock, that occur during the relevant twenty trading day period, and may (if and to the extent provided by the Board before the date of grant of the particular award) be adjusted to account for any other recapitalization, reorganization or other material transaction of or with the Company.

Such annual equity award grants will be made on the date of each annual meeting of the Company’s stockholders; provided that if more than one such meeting occurs during a particular calendar year, the grants will be made only in connection with the first such meeting to occur in that year.

Initial Equity Awards

For each new non-employee director appointed or elected to the Board, on the date that the new non-employee director first becomes a member of the Board, the new non-employee director will automatically be granted an award of Company common stock determined by dividing (1) the sum of the New Director Award grant value set forth above plus a pro-rata portion of the Annual Equity Award value by (2) the Average Closing Price as of that date (rounded down to the nearest whole share). The pro-rata portion of the Annual Equity Award value for purposes of the applicable initial equity award will equal the Annual Equity Award value multiplied by a fraction (not greater than one), the numerator of which is 365 minus the number of calendar days that as of the particular grant date had elapsed since the start of the Company’s fiscal year.

An employee or former employee of the Company or one of its subsidiaries who ceases or has ceased to be so employed and becomes a non-employee director will not be eligible for an initial equity award grant, but will be eligible for cash compensation and annual equity awards on the same basis as other non-employee directors.

Provisions Applicable to All Non-Employee Director Equity Awards

Each award will be made under and subject to the terms and conditions of the Company’s 2008 Performance Incentive Plan or any successor equity compensation plan approved by the Company’s stockholders and in effect at the time of grant. Each award will be fully vested at grant.

Expense Reimbursement

All non-employee directors will be entitled to reimbursement from the Company for their reasonable travel (including airfare and ground transportation), lodging and meal expenses incident to meetings of the Board or committees thereof or in connection with other Board related business. The Company will make reimbursement to a non-employee director within a reasonable amount of time following submission by the non-employee director of reasonable written substantiation for the expenses, and in all cases not later than the end of the calendar year following the calendar year in which the related expense was incurred.

EX-21

EXHIBIT 21

Microsemi Corporation Subsidiaries

As of November 13, 2014

Name of Microsemi Corporation Subsidiary	Jurisdiction
IDS Acquisition Corp.	Arizona
Microsemi Corp. - Scottsdale	Arizona
Microsemi Corp. - Power Management Group	California
Microsemi Corp. - Power Management Group Holding	California
Microsemi Defense Systems, Inc.	California
Microsemi Real Estate, Inc.	California
Microsemi Semiconductor V.N. Inc.	California
Microsemi SoC Corp.	California
Microsemi Corp. - Colorado	Colorado
Arxan Defense Systems, Inc.	Delaware
Centellax, Inc.	Delaware
Electronic Designs, Inc.	Delaware
Micro Beat, Inc.	Delaware
Micro CML, Inc.	Delaware
Microsemi Corp. - Analog Mixed Signal Group	Delaware
Microsemi Corp. - Massachusetts	Delaware
Microsemi Corp. - Power Products Group	Delaware
Microsemi Corp. - RF Integrated Solutions	Delaware
Microsemi Corp. - RF Power Products	Delaware
Microsemi Corp. - Santa Ana	Delaware
Microsemi Frequency and Time Corporation	Delaware
Microsemi International, Inc.	Delaware
Microsemi Semiconductor (U.S.) Inc.	Delaware
Symmetricom Global Services, Inc.	Delaware
Symmetricom LLC	Delaware
Zulu Acquisition Co., LLC	Delaware
White Electronic Designs Corporation	Indiana
T.S.I. Microelectronics Corp.	Massachusetts
White Electronics / ALI, Inc.	Massachusetts
Microsemi Pan-Asia Corp.	Nevada
PowerDsine, Inc.	New York
Panelview, Inc.	Oregon
Microsemi BMD IP Holding Limited	Bermuda
Microsemi Ireland, Ltd.	Bermuda
Symmetricom Puerto Rico, Ltd.	Bermuda
0916753 B.C. ULC	Canada
Microsemi Corp. - Holding	Cayman Islands
Microsemi Corp. - Holding 2	Cayman Islands
Microsemi Corp. - International	Cayman Islands
Beijing Symmetricom Co., Ltd.	China
Shanghai Microsemi Semiconductor Co., Ltd.	China
Microsemi Europe SARL	France
Microsemi Power Module Products, SAS	France
Microsemi GmbH	Germany
Microsemi Semiconductor GmbH	Germany

Name of Microsemi Corporation Subsidiary	Jurisdiction
Symmetricom Europe GmbH	Germany
Microsemi (Hong Kong) Ltd.	Hong Kong
Microsemi Pan-Asia Hong Kong Ltd.	Hong Kong
Microsemi Corp. - Semiconductor India Private Ltd.	India
Symmetricom India Private Ltd.	India
Microsemi Ireland Holding Limited	Ireland
Microsemi Ireland Trading, Ltd.	Ireland
Microsemi Semiconductors Ltd.	Ireland
Mingoa Limited	Ireland
Microsemi IOM Limited	Isle of Man
Microsemi IOM Unlimited	Isle of Man
Microsemi Corp. - Analog Mixed Signal Group, Ltd.	Israel
Microsemi Israel, Ltd.	Israel
Microsemi Europe Srl.	Italy
Actel Japan K.K.	Japan
Centellax Japan, LLC	Japan
Microsemi Corp. - Japan K.K.	Japan
Microsemi Irish IP Holding (Lux) Limited	Luxembourg
Microsemi Macao Commercial Offshore Limited	Macau
Microsemi Corp. Mauritius	Mauritius
Microsemi Semiconductor XIC B.V.	Netherlands
Microsemi Semiconductors - Manila (Philippines), Inc.	Philippines
Microsemi Semiconductor (Asia) Pte. Ltd.	Singapore
Microsemi Semiconductor AB	Sweden
Microsemi Europe Ltd.	United Kingdom
Microsemi Semiconductor Holdings Ltd.	United Kingdom
Microsemi Semiconductor Limited	United Kingdom
Symmetricom Ltd.	United Kingdom

EX-23

EXHIBIT 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (Nos. 033-62561 and 333-34846) and the Registration Statements on Form S-8 (Nos. 333-195568. 333-192678, 333-175608, 333-171135, 333-166701, 333-150529, 333-140071, 333-135678, 333-129283, 333-82556, 333-35526, 333-24045, 033-62563, and 033-63395) of Microsemi Corporation of our report dated November 13, 2014 relating to the financial statements, financial statement schedule and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

Irvine, California

November 13, 2014

EX-31.1

EXHIBIT 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO

SECURITIES EXCHANGE ACT RULES 13a-14(a) AND 15d-14(a) AS ADOPTED

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, James J. Peterson, certify that:

1. I have reviewed this annual report on Form 10-K of Microsemi Corporation;

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(s) 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(s) 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 13, 2014

/s/ James J. Peterson

James J. Peterson

Chairman of the Board and Chief Executive Officer

EX-31.2

EXHIBIT 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO

SECURITIES EXCHANGE ACT RULES 13a-14(a) AND 15d-14(a) AS ADOPTED

PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, John W. Hohener, certify that:

1. I have reviewed this annual report on Form 10-K of Microsemi Corporation;

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(s) 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(s) 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 13, 2014

/s/ John W. Hohener

John W. Hohener

Executive Vice President, Chief Financial

Officer, Secretary and Treasurer

EX-32

EXHIBIT 32

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

(Pursuant to 18 U.S.C. 1350 as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002)

The undersigned, James J. Peterson, Chief Executive Officer, and John W. Hohener, Chief Financial Officer, of Microsemi Corporation, a Delaware corporation (the “Company”), each hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that—

(1) the accompanying periodic report containing financial statements filed by the Company with the Securities and Exchange Commission (the “Report”) fully complies with the requirements of Section 13(a) of the Securities Exchange Act of 1934 (15 U.S.C. 78m(a)); and

(2) information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

IN WITNESS WHEREOF, the undersigned have executed this certificate which accompanies the Company’s Annual Report on Form 10-K for the annual period ended September 28, 2014.

Dated:	November 13, 2014	/s/ James J. Peterson
		James J. Peterson
		Chairman of the Board and Chief Executive Officer
Dated:	November 13, 2014	/s/ John W. Hohener
		John W. Hohener
		Executive Vice President, Chief Financial Officer, Secretary and Treasurer

XML

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Fair Value Measurements Using (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2014	Sep. 29, 2013
Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap liabilities	$ 0	$ 0
Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap liabilities	77	643
Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap liabilities	0	0
Estimate of Fair Value, Fair Value Disclosure
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap liabilities	77	643
Measured on a recurring basis | Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities, Current	4,139
Measured on a recurring basis | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities, Current	0
Measured on a recurring basis | Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities, Current	0
Measured on a recurring basis | Estimate of Fair Value, Fair Value Disclosure
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities, Current	$ 4,139

XML

INCOME TAXES - Reconciliation of the Unrecognized Tax Benefits (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning gross unrecognized tax benefits	$ 69,571	$ 58,016	$ 32,370
Additions based on tax positions related to the current year	2,389	3,238	12,786
Additions based on current year acquisitions	28,861	0	10,615
Additions based on tax positions of prior years	459	12,845	2,605
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions	0	(2,805)	(169)
Reductions for lapses and settlements	(3,609)	(1,723)	(191)
Ending gross unrecognized tax benefit	$ 97,671	$ 69,571	$ 58,016

XML

ACCRUED LIABILITIES (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2014	Sep. 29, 2013
Business Acquisition [Line Items]
Payroll, bonus, and employee benefits	$ 34,278	$ 24,649
Outside services	9,616	10,258
Restructuring and severance	8,439	8,587
Deferred revenue	11,430	5,565
Warranties	6,882	2,809
Commissions	4,026	2,799
Income taxes	971	2,291
Interest	67	1,276
Licenses	1,107	786
Sales and Property Taxes	1,081	785
Other	7,805	3,804
Total	85,702	63,609
Symmetricom
Business Acquisition [Line Items]
Warranties	$ 3,800

XML

Long Lived Assets by Geographic Area (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	$ 148,712	$ 125,158	$ 116,146
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	117,867	100,736	93,496
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	12,167	12,558	13,253
Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	16,766	10,209	7,912
Other Geographic Area [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	$ 1,912	$ 1,655	$ 1,485

XML

CREDIT AGREEMENT AND RELATED INSTRUMENTS (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 30, 2014	Dec. 29, 2013	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Line of Credit Facility [Line Items]
Maximum amount allowed to be requested for a loan or revolving credit facility			$ 300,000,000.0
Payments of debt extinguishment costs	(700,000)		(89,462,000)	(277,539,000)	(470,296,000)
Proceeds from Issuance of Debt		150,000,000.0
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage			0.375%
Interest Rate Swap
Line of Credit Facility [Line Items]
Derivative Liabilities, Noncurrent				(400,000)
Derivative Instruments, Gain Recognized in Income			(600,000)	(1,300,000)
Derivatives, current liabilities				(300,000)
Derivative, Gain on Derivative			600,000	1,300,000
Interest Rate Swap | Group 2
Line of Credit Facility [Line Items]
Notional amount			24,000,000
Fixed rate			2.21%
Term Loan Facility And Incremental Term Loan Facility [Member]
Line of Credit Facility [Line Items]
Borrowed under term loan facility			698,000,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Borrowed under term loan facility			0
Revolving Loans And Swingline [Member]
Line of Credit Facility [Line Items]
Borrowed under term loan facility			0
Term Loan
Line of Credit Facility [Line Items]
Borrowed under term loan facility			646,375,000
Fair value outstanding term loan			693,000,000	674,300,000
Incremental Term Loan Facility
Line of Credit Facility [Line Items]
Borrowed under term loan facility			51,651,000
Minimum
Line of Credit Facility [Line Items]
Excess Cash Flow Percentage			0.00%
Consolidated Leverage Ratio			1.00
Maximum
Line of Credit Facility [Line Items]
Excess Cash Flow Percentage			50.00%
Consolidated Leverage Ratio			3.00
Letter of Credit
Line of Credit Facility [Line Items]
Debt Instrument Fronting Fee Percentage			0.25%
Revolving Credit Facility
Line of Credit Facility [Line Items]
Face amount			$ 50,000,000.0
Base Rate | Revolving Loans And Swingline [Member] | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			3.25%
Basis spread on variable rate			3.25%
Base Rate | Term Loan | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			3.25%
Basis spread on variable rate			1.50%
Base Rate | Incremental Term Loan Facility | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			3.25%
Basis spread on variable rate			1.75%
Eurodollar Rate | Revolving Loans And Swingline [Member] | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate			4.25%
Eurodollar Rate | Term Loan | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate			2.50%
Eurodollar Rate | Incremental Term Loan Facility | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on variable rate			2.75%
Eurodollar Rate | Maximum | Revolving Loans And Swingline [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum			0.00%
Eurodollar Rate | Maximum | Term Loan
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum			0.75%
Eurodollar Rate | Maximum | Incremental Term Loan Facility
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum			0.75%
Current | Revolving Loans And Swingline [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate During Period			0.00%
Current | Term Loan
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate During Period			3.25%
Current | Incremental Term Loan Facility
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate During Period			3.50%

XML

GOODWILL AND INTANGIBLE ASSETS, NET - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Goodwill and Intangible Assets Disclosure [Line Items]
Amortization of intangible assets	$ 92,809	$ 84,819	$ 104,756
Completed technology
Goodwill and Intangible Assets Disclosure [Line Items]
Amortization of intangible assets	43,863	39,005	40,621
Customer relationships
Goodwill and Intangible Assets Disclosure [Line Items]
Amortization of intangible assets	44,988	42,589	41,451
Backlog, trade name and other
Goodwill and Intangible Assets Disclosure [Line Items]
Amortization of intangible assets	$ 3,958	$ 3,225	$ 22,684

XML

STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Sep. 28, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Activity and Price Information Related to Stock Options and Stock Appreciation Rights

Activity and price information related to stock options and stock appreciation rights are as follows (quantity and intrinsic value in thousands):

	Quantity		Weighted-Average Exercise Price		Intrinsic Value		Weighted Average Remaining Life (Years)
Outstanding at October 2, 2011	9,474		$	19.84	$	12,684	3.1
Exercised	(1,933	)	$	16.82	$	7,619
Forfeited	(567	)	$	24.99
Outstanding at September 30, 2012	6,974		$	20.26	21,557		2.5
Exercised	(1,944	)	$	14.16	$	16,956
Forfeited	(348	)	$	24.33
Outstanding at September 29, 2013	4,682		$	22.49	$	14,702	1.7
Assumed from acquisition	578		$	20.08
Exercised	(1,228	)	$	16.39	$	16,956
Forfeited	(1,364	)	$	26.55
Outstanding at September 28, 2014	2,668		$	22.70	$	7,413	2.0
Exercisable at September 28, 2014	2,404		$	22.91	6,280		1.6
Exercisable and expected to vest after September 28, 2014	2,666		$	22.7	$	7,405	2.0

Schedule Of Additional Information About Stock Options and Stock Appreciation Rights Outstanding

Quantity and weighted-average exercise prices related to stock options and stock appreciation rights outstanding as of September 28, 2014 and stratified by exercise price are as follows (quantity in thousands):

	Exercisable			Outstanding
Exercise Price	Quantity	Weighted-Average Exercise Price		Quantity	Weighted-Average Exercise Price
Less than or equal to $20.00	521	$	14.33	607	$	14.34
Greater than $20.00	1,870	$	25.30	2,061	$	25.16
	2,391	$	22.91	2,668	$	22.70

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

Weighted-average fair value and weighted-average assumptions used in the calculation of compensation expense for assumed grants in 2014 are as follows. There were no stock options or stock appreciation rights granted or assumed in 2012 or 2013.

Fair Value		Risk Free Rate		Expected Dividend Yield		Expected Life (Years)	Expected Volatility
$	20.08	0.5	%	—	%	2.7	31.0	%

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

Activity and price information related to restricted stock awards are as follows (quantity in thousands):

	Quantity		Weighted-Average Grant Price
Outstanding at October 2, 2011	2,350		$	19.44
Granted	1,656		$	19.41
Vested	(1,281	)	$	19.27
Forfeited	(70	)	$	19.34
Outstanding at September 30, 2012	2,655		$	19.51
Granted	1,887		$	20.39
Vested	(1,363	)	$	19.10
Forfeited	(115	)	$	20.16
Outstanding at September 29, 2013	3,064		$	20.21
Granted	1,589		$	24.67
Vested	(1,393	)	$	20.41
Forfeited	(186	)	$	22.11
Outstanding at September 28, 2014	3,074		$	22.31

Schedule of Nonvested Performance-based Units Activity

Activity and price information related to performance units are as follows (quantity report at target and in thousands):

	Quantity		Weighted-Average Grant Price
Outstanding at September 30, 2012	350		$	17.77
Granted	350		$	21.62
Vested	(105	)	$	17.77
Outstanding at September 29, 2013	595		$	20.03
Granted	332		$	26.27
Vesting in excess of target	56		$	17.77
Vested	(301	)	$	17.77
Outstanding at September 28, 2014	682		$	23.88

XML

STOCK-BASED COMPENSATION - Narrative (Detail) (USD $) Share data in Millions, unless otherwise specified	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 43,939,000	$ 35,242,000	$ 36,680,000
Charge for stock based compensation	43,938,000	35,242,000	36,680,000
Unamortized compensation expense related to unvested options and restricted stock awards, net of forfeitures	46,600,000
Compensation expense related to nonvested restricted stock options, recognition periods	1 year 5 months 0 days
Common stock for delivery under awards that have been and may be granted	14.1	12.2	16.0
Stock Option Plan 2008
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares to the shares limit in common stock	4.8
Shares limit in common stock	33.3
Plan expiration date	Dec. 05, 2021
Full value award of shares issued for every one share	2.41
Maximum term of a stock option grant or a stock appreciation right grant	6 years
Capital in Excess of Par value of Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 43,939,000	$ 35,242,000	$ 36,680,000
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage relative to net sales	40.00%	25.00%	50.00%
Vesting percentage relative to earnings per share	60.00%	75.00%	50.00%

XML

Quarterly Financial Data (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Quarterly Financial Information Disclosure [Abstract]
Net Sales	$ 303,315	$ 292,301	$ 287,016	$ 255,631	$ 250,383	$ 242,630	$ 235,333	$ 247,598	$ 1,138,263	$ 975,944	$ 1,012,495
Gross profit	170,966	153,590	148,639	138,308	142,838	138,312	133,465	142,573	611,503	557,188	552,623
Net income (loss)	$ 32,797	$ (4,293)	$ (6,759)	$ 1,379	$ 14,086	$ 18,279	$ (2,905)	$ 14,214	$ 23,123	$ 43,674	$ (29,675)
Basic earnings (loss) per share	$ 0.35	$ (0.05)	$ (0.07)	$ 0.01	$ 0.16	$ 0.20	$ (0.03)	$ 0.16	$ 0.25	$ 0.49	$ (0.35)
Diluted earnings (loss) per share	$ 0.34	$ (0.05)	$ (0.07)	$ 0.01	$ 0.15	$ 0.20	$ (0.03)	$ 0.16	$ 0.24	$ 0.48	$ (0.35)

XML

ACQUISITIONS (Tables)

12 Months Ended

Sep. 28, 2014

Business Acquisition [Line Items]

Business Acquisition, Pro Forma Information

	2014		2013
Net sales	$	1,180,484	$	1,195,356
Net income	$	25,478	$	22,638
Earnings per share:
Basic	$	0.27	$	0.25
Diluted	$	0.27	$	0.25

Symmetricom

Business Acquisition [Line Items]

Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block]

The allocation is as follows (amounts in thousands):

Cash and cash equivalents	$	26,337
Accounts receivable	32,131
Inventories	47,536
Other current assets	57,405
Property and equipment	18,857
Other assets	1,063
Identifiable intangible assets	108,800
Goodwill	67,329
Current liabilities	(36,753		)
Deferred tax liabilities	(6,347		)
Other non-current liabilities	(3,619		)
Total consideration	$	312,739

Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]

The valuation of identifiable intangible assets and their estimated useful lives are as follows (dollar amounts in thousands):

	Asset Amount		Weighted Average Useful Life (Years)
Completed technology	$	74,100	9
Customer relationships	30,400		9
Other	4,300		1
	$	108,800

Mingoa and Centellax

Business Acquisition [Line Items]

Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block]

The preliminary allocation is as follows (amounts in thousands):

Cash and cash equivalents	$	586
Accounts receivable	2,307
Inventories	5,746
Other current assets	189
Property and equipment	1,898
Other assets	52
Identifiable intangible assets	20,730
Goodwill	28,045
Deferred tax liabilities	(5,530		)
Current liabilities	(2,327		)
Other non-current liabilities	(178		)
Total consideration	$	51,518

Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]

The valuation of identifiable intangible assets and their estimated useful lives are as follows (dollar amounts in thousands):

	Asset Amount		Weighted Average Useful Life (Years)
Completed technology	$	19,100	5
Customer relationships	1,360		4
Other	270		1
	$	20,730

XML

INCOME TAXES - Provision for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Income Tax Disclosure [Abstract]
Federal	$ 0	$ 812	$ (16)
State	264	806	228
Foreign	3,914	3,115	3,458
Federal	(6,534)	2,306	5,061
State	(155)	1,385	2,255
Foreign	3,304	3,965	3,964
Income Tax Expense (Benefit)	$ 793	$ 12,389	$ 14,950

XML

INVENTORIES (Detail) (USD $)	3 Months Ended
	Jun. 29, 2014	Sep. 28, 2014	Sep. 29, 2013
Inventory Disclosure [Abstract]
Inventory Write-down	$ 7,900,000
Raw materials		55,280,000	36,436,000
Work in progress		94,044,000	86,762,000
Finished goods		55,681,000	38,788,000
Total		$ 205,005,000	$ 161,986,000

XML

UNAUDITED SELECTED QUARTERLY FINANCIAL DATA (Tables)

12 Months Ended

Sep. 28, 2014

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data

Selected quarterly financial data are as follows (amounts in thousands, except earnings per share):

	Quarters ended in fiscal year 2014
	September 28, 2014		June 29, 2014			March 30, 2014			December 29, 2013
Net sales	$	303,315	$	292,301		$	287,016		$	255,631
Gross profit	$	170,966	$	153,590		$	148,639		$	138,308
Net income (loss)	$	32,797	$	(4,293	)	$	(6,759	)	$	1,379
Basic earnings (loss) per share	$	0.35	$	(0.05	)	$	(0.07	)	$	0.01
Diluted earnings (loss) per share	$	0.34	$	(0.05	)	$	(0.07	)	$	0.01

	Quarters ended in fiscal year 2013
	September 29, 2013		June 30, 2013		March 31, 2013			December 30, 2012
Net sales	$	250,383	$	242,630	$	235,333		$	247,598
Gross profit	$	142,838	$	138,312	$	133,465		$	142,573
Net income (loss)	$	14,086	$	18,279	$	(2,905	)	$	14,214
Basic earnings (loss) per share	$	0.16	$	0.20	$	(0.03	)	$	0.16
Diluted earnings (loss) per share	$	0.15	$	0.20	$	(0.03	)	$	0.16

XML

INCOME TAXES - Reconciliation of Income Tax Computed at the Federal Statutory Rate to Actual Tax Expenses (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Income Tax Disclosure [Abstract]
Tax computed at federal statutory rate	$ 8,372	$ 19,622	$ (5,153)
State taxes, net of federal impact	(1,064)	(1,468)	(3,244)
Foreign income taxed at different rates	(24,667)	(20,523)	(18,207)
Tax credits	(2,757)	(5,418)	(1,096)
Stock award compensation	1,157	197	295
Unrecognized tax benefits	1,410	(392)	1,981
U.S. tax on foreign income	4,061	1,374	18,150
Income tax return to provision	(189)	(875)	(3,153)
Non-deductible permanent items	869	167	1,682
Pre-acquisition loss carryforwards	(11,414)	0	(4,043)
Effective Income Tax Reconciliation, Prior Year Adjustments On Deferred Taxes	2,931	0	0
Effective Income Tax Reconciliation, Deduction, Foreign Declared Dividends, Amount	3,642	0	0
Withholding taxes	300	700	0
Other differences, net	493	164	9
Valuation allowance	17,649	18,841	27,729
Income Tax Expense (Benefit)	$ 793	$ 12,389	$ 14,950

XML

RESTRUCTURING AND SEVERANCE CHARGES - Restructuring Activities for Scottsdale Facility and the Accrued Liabilities in the Consolidated Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014 Employee Severance	Sep. 28, 2014 Other Facilities	Sep. 28, 2014 Other Facilities Employee Severance
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 3,836	$ 0		$ 8,762	$ 1,826
Restructuring, Reversal of Prior Provision			(13,576)
Cash expenditures				(25,192)	(13,871)
Ending Balance	$ 3,836	$ 0		$ 12,276	$ 4,079

XML

STOCK-BASED COMPENSATION - Restricted Stock Awards Activity and Price (Detail) (Restricted Stock Award, USD $)	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Restricted Stock Awards
Outstanding and Nonvested, Balance	3,064,000	2,655,000	2,350,000
Granted	1,589,000	1,887,000	1,656,000
Vested	(1,393,000)	(1,363,000)	(1,281,000)
Canceled	(186,000)	(115,000)	(70,000)
Outstanding and Nonvested, Balance	3,074,000	3,064,000	2,655,000
Weighted- Average Grant Price
Outstanding and Nonvested, Balance	$ 20.21	$ 19.51	$ 19.44
Granted	$ 24.67	$ 20.39	$ 19.41
Vested	$ 20.41	$ 19.10	$ 19.27
Forfeited	$ 22.11	$ 20.16	$ 19.34
Outstanding and Nonvested, Balance	$ 22.31	$ 20.21	$ 19.51

XML

GOODWILL AND INTANGIBLE ASSETS, NET - Estimated Amortization Expense (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 92,809	$ 84,819	$ 104,756
2014	88,186
2015	83,638
2016	80,473
2017	37,838
2018	15,573
Thereafter	46,185
Completed technology
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	43,863	39,005	40,621
Customer relationships
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 44,988	$ 42,589	$ 41,451

XML

INVENTORIES

12 Months Ended

Sep. 28, 2014

Inventory Disclosure [Abstract]

INVENTORIES

INVENTORIES

Inventories are summarized as follows (amounts in thousands):

	September 28, 2014		September 29, 2013
Raw materials	$	55,280	$	36,436
Work in progress	94,044		86,762
Finished goods	55,681		38,788
	$	205,005	$	161,986

We periodically evaluate the profitability of our various offerings. Should the actual or expected profitability fall below an acceptable threshold, we may decide to stop offering a product, in part to reallocate manufacturing, operations, engineering, sales and support resources to products we expect will generate greater returns. During 2014, our evaluation led us to selectively exit product offerings that we believe will continue to lag our overall profitability goals. This resulted in an inventory write-off of $7.9 million. We believe that for many of these products, market dynamics dictate that price is the primary differentiator rather than our value-added core competencies of power, reliability, security and performance.

XML

STOCK-BASED COMPENSATION - Performance Shares (Details) (Performance stock units, USD $)	1 Months Ended	12 Months Ended
	Nov. 30, 2013	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	116.00%
Vesting percentage relative to net sales		40.00%	25.00%	50.00%
Vesting percentage relative to earnings per share		60.00%	75.00%	50.00%
Performance Units
Outstanding and Nonvested, Balance		595,000	350,000
Granted		332,000	350,000
Vested		(301,000)	(105,000)
Vesting in excess of target		56,000
Outstanding and Nonvested, Balance		682,000	595,000	350,000
Weighted- Average Grant Price
Outstanding and Nonvested, Balance		$ 20.03	$ 17.77
Granted		$ 26.27	$ 21.62
Vested		$ 17.77	$ 17.77
Vesting in excess of target		$ 17.77
Outstanding and Nonvested, Balance		$ 23.88	$ 20.03	$ 17.77
Granted in 2012 | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage				30.00%
Granted in 2012 | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	86.00%
Granted in 2013
Performance Units
Vested			0

XML

PROPERTY AND EQUIPMENT (Detail) (USD $)	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 436,793,000	$ 416,041,000
Accumulated depreciation	(303,758,000)	(303,529,000)
Land	2,084,000	1,725,000
Construction in progress	13,593,000	10,921,000
Property and equipment, net	148,712,000	125,158,000	116,146,000
Property plant and equipment useful life	Shorter of asset life or life of lease
Depreciation expense	32,900,000	28,800,000	31,300,000
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	40,109,000	37,773,000
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	339,800,000	328,652,000
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	9,917,000	10,918,000
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 46,967,000	$ 38,698,000
Property plant and equipment useful life	Shorter of asset life or life of lease
Minimum | Buildings
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	20 years
Minimum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	3 years
Minimum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	5 years
Maximum | Buildings
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	40 years
Maximum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	10 years
Maximum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	10 years

XML

ACCRUED LIABILITIES (Tables)

12 Months Ended

Sep. 28, 2014

Accounts Payable and Accrued Liabilities, Current [Abstract]

Components of Accrued Liabilities

Accrued liabilities consisted of the following components (amounts in thousands):

	September 28, 2014		September 29, 2013
Payroll, bonus and employee benefits	$	34,278	$	24,649
Deferred revenue	11,430		5,565
Outside services	9,616		10,258
Warranties	6,882		2,809
Restructuring and severance	8,439		8,587
Commissions	4,026		2,799
Income taxes	971		2,291
Licenses	1,107		786
Sales and property taxes	1,081		785
Interest	67		1,276
Other	7,805		3,804
	$	85,702	$	63,609

XML

GOODWILL AND INTANGIBLE ASSETS, NET (Tables)

12 Months Ended

Sep. 28, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill and intangible assets, net consisted of the following components (amounts in thousands):

	September 28, 2014					September 29, 2013					Life (in years)
	Gross Carrying Value		Accumulated Amortization			Gross Carrying Value		Accumulated Amortization
Amortizable intangible assets
Completed technology	$	402,670	$	(201,337	)	$	309,470	$	(157,472	)	2 to 15
Customer relationships	301,790		(152,462		)	270,030		(107,474		)	4 to 15
Backlog, trade name and other	17,917		(16,685		)	13,341		(12,720		)	1 to 5
	$	722,377	$	(370,484	)	$	592,841	$	(277,666	)
Non-amortizing intangible assets
Goodwill	$	885,610				$	790,236

Reconciliation of Goodwill

A reconciliation of our goodwill for the years ended September 28, 2014 and September 29, 2013 is as follows (amounts in thousands):

	September 28, 2014		September 29, 2013
Beginning balance	$	790,236	$	790,236
Additions from acquisitions	95,374		—
Ending balance	$	885,610	$	790,236

Estimated Amortization Expense

Estimated amortization expense in each of the five succeeding years and thereafter is as follows (amounts in thousands):

	2015		2016		2017		2018		2019		Thereafter
Amortization expense	$	88,186	$	83,638	$	80,473	$	37,838	$	15,573	$	46,185

XML

OTHER LONG-TERM LIABILITIES (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2014	Sep. 29, 2013
Other Liabilities Disclosure [Abstract]
Unrecognized tax benefits	$ 17,376	$ 16,546
Deferred rent	13,671	15,510
Accrued pension and retirement	8,853	7,164
Restructuring	3,836	0
Capital leases	55	2,873
Interest rate swaps	0	368
Environmental	200	372
Other	2,887	1,536
Total	$ 46,878	$ 44,369

XML

GOODWILL AND INTANGIBLE ASSETS, NET - Goodwill and Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified										12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012	Sep. 28, 2014 Completed technology	Sep. 29, 2013 Completed technology	Sep. 28, 2014 Customer relationships	Sep. 29, 2013 Customer relationships	Sep. 28, 2014 Backlog, trade name and other	Sep. 29, 2013 Backlog, trade name and other	Sep. 28, 2014 Minimum Completed technology	Sep. 28, 2014 Minimum Customer relationships	Sep. 28, 2014 Minimum Backlog, trade name and other	Sep. 28, 2014 Maximum Completed technology	Sep. 28, 2014 Maximum Customer relationships	Sep. 28, 2014 Maximum Backlog, trade name and other
Goodwill and Intangible Assets Disclosure [Line Items]
Gross Carrying Value	$ 722,377	$ 592,841		$ 402,670	$ 309,470	$ 301,790	$ 270,030	$ 17,917	$ 13,341
Accumulated Amortization	(370,484)	(277,666)		(201,337)	(157,472)	(152,462)	(107,474)	(16,685)	(12,720)
Life (years)										2 years	4 years	1 year	15 years	15 years	5 years
Goodwill	$ 885,610	$ 790,236	$ 790,236

XML

INCOME TAXES (Tables)

12 Months Ended

Sep. 28, 2014

Income Tax Disclosure [Abstract]

Pretax Income (Loss)

Pretax income (loss) was generated from the following sources for each of the three fiscal years in the period ended September 28, 2014 (amounts in thousands):

	2014			2013			2012
Domestic	$	(62,702	)	$	(38,709	)	$	(88,964	)
Foreign	86,618			94,772			74,239
Total	$	23,916		$	56,063		$	(14,725	)

Provision (Benefit) of Income Taxes

The provision for income taxes consisted of the following components for each of the three fiscal years in the period ended September 28, 2014 (amounts in thousands):

	2014			2013		2012
Current:
Federal	$	—		$	812	$	(16	)
State	264			806		228
Foreign	3,914			3,115		3,458
Deferred:
Federal	(6,534		)	2,306		5,061
State	(155		)	1,385		2,255
Foreign	3,304			3,965		3,964
	$	793		$	12,389	$	14,950

Reconciliation of income Tax Computed at the Federal Statutary Rate

The following is a reconciliation of income tax computed at the federal statutory rate to our actual tax expense for each of the three fiscal years in the period ended September 28, 2014 (amounts in thousands):

	2014			2013			2012
Tax computed at federal statutory rate	$	8,372		$	19,622		$	(5,153	)
State taxes, net of federal impact	(1,064		)	(1,468		)	(3,244		)
Foreign income taxed at different rates	(24,667		)	(20,523		)	(18,207		)
Tax credits and incentives	(2,757		)	(5,418		)	(1,096		)
Stock award compensation	1,157			197			295
Unrecognized tax benefits	1,410			(392		)	1,981
U.S. tax on foreign income	4,061			1,374			18,150
Income tax return to provision	(189		)	(875		)	(3,153		)
Non-deductible permanent items	869			167			1,682
Pre-acquisition loss carry forwards	(11,414		)	—			(4,043		)
Expiration of tax attributes	2,931			—			—
Foreign declared dividend	3,642			—			—
Withholding taxes	300			700			—
Other differences, net	493			164			9
Valuation allowance	17,649			18,841			27,729
	$	793		$	12,389		$	14,950

Components of Deferred Tax Assets (Liabilities)

The tax effected deferred tax assets (liabilities) are comprised of the following components (amounts in thousands):

	September 28, 2014			September 29, 2013
Accounts receivable, net	$	1,173		$	945
Inventories	14,501			9,264
Accrued employee benefit expenses	8,806			4,230
Net operating losses	149,571			140,555
Tax credits and incentives	144,219			140,069
Accrued other expenses	11,397			6,287
Deferred equity compensation	16,725			14,845
Property and equipment, net	3,115			3,242
Other assets	11,753			9,797
Total deferred tax assets	361,260			329,234
Intangible assets	(127,213		)	(100,050		)
Foreign declared dividend	(3,642		)	—
Total deferred tax liabilities	(130,855		)	(100,050		)
Less valuation allowance	(218,946		)	(210,073		)
	$	11,459		$	19,111

Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (amounts in thousands):

	September 28, 2014			September 29, 2013			September 30, 2012
Beginning gross unrecognized tax benefits	$	69,571		$	58,016		$	32,370
Additions based on tax positions related to the current year	2,389			3,238			12,786
Additions based on current year acquisitions	28,861			—			10,615
Additions based on tax positions of prior years	459			12,845			2,605
Reductions based on tax positions of prior years	—			(2,805		)	(169		)
Reductions for lapses and settlements	(3,609		)	(1,723		)	(191		)
Ending gross unrecognized tax benefit	$	97,671		$	69,571		$	58,016

XML

CREDIT AGREEMENT AND RELATED INSTRUMENTS (Tables)	12 Months Ended
	Sep. 28, 2014
Debt Disclosure [Abstract]
Interest Rate Margin on Debt	At September 28, 2014, the principal amounts outstanding were Eurodollar Rate loans and interest rate information as of September 28, 2014 were as follows (dollar amounts in thousands):  Principal Outstanding Base Rate Base Rate Margin Eurodollar Rate Margin Eurodollar Floor Applicable RateRevolving and swingline loans $— 3.25% 3.25% 4.25% —% —%Term loan $646,375 3.25% 1.50% 2.50% 0.75% 3.25%Incremental term loan $51,651 3.25% 1.75% 2.75% 0.75% 3.50%

XML

ACQUISITIONS (Notes)

12 Months Ended

Sep. 28, 2014

Business Combinations [Abstract]

ACQUISITIONS

ACQUISITIONS

In November 2013, we, through a wholly owned subsidiary, acquired all the outstanding shares of Symmetricom, Inc. ("Symmetricom" or "Microsemi – FTD") for cash consideration of $312.7 million. We acquired Symmetricom for its world-leading source of highly precise timekeeping technologies and solutions that enable next generation data, voice, mobile and video networks and services.

We allocated the total consideration to Symmetricom's tangible and intangible assets and liabilities based on their estimated fair values as of the acquisition date and allocated the remaining amount to goodwill. The allocation is as follows (amounts in thousands):

Cash and cash equivalents	$	26,337
Accounts receivable	32,131
Inventories	47,536
Other current assets	57,405
Property and equipment	18,857
Other assets	1,063
Identifiable intangible assets	108,800
Goodwill	67,329
Current liabilities	(36,753		)
Deferred tax liabilities	(6,347		)
Other non-current liabilities	(3,619		)
Total consideration	$	312,739

As of the acquisition date, the gross contractual amount of acquired accounts receivable was $33.4 million and an estimate of contractual cash flows not expected to be collected was $1.3 million.

The valuation of identifiable intangible assets and their estimated useful lives are as follows (dollar amounts in thousands):

	Asset Amount		Weighted Average Useful Life (Years)
Completed technology	$	74,100	9
Customer relationships	30,400		9
Other	4,300		1
	$	108,800

In July 2014, we acquired Mingoa, Ltd., a provider of semiconductor IP for hardware accelerated Ethernet OAM and embedded tests and in September 2014, we acquired Centellax, Inc., a supplier of high-speed analog and RF semiconductor products for the optical communications and Ethernet datacom markets. The estimated consideration for these acquisitions was $51.5 million.

We allocated the total estimated consideration of Mingoa's and Centellax's tangible and intangible assets and liabilities based on their estimated fair values as of the acquisition date and allocated the remaining amount to goodwill. The preliminary allocation is as follows (amounts in thousands):

Cash and cash equivalents	$	586
Accounts receivable	2,307
Inventories	5,746
Other current assets	189
Property and equipment	1,898
Other assets	52
Identifiable intangible assets	20,730
Goodwill	28,045
Deferred tax liabilities	(5,530		)
Current liabilities	(2,327		)
Other non-current liabilities	(178		)
Total consideration	$	51,518

As of the acquisition date, the gross contractual amount of acquired accounts receivable of $2.3 million was expected to be fully collectible.

The valuation of identifiable intangible assets and their estimated useful lives are as follows (dollar amounts in thousands):

	Asset Amount		Weighted Average Useful Life (Years)
Completed technology	$	19,100	5
Customer relationships	1,360		4
Other	270		1
	$	20,730

Valuation methodology

The fair value of the identified intangible assets for the acquisitions noted above was estimated by performing a discounted cash flow analysis using the "income" approach. This method includes a forecast of direct revenues and costs associated with the respective intangible assets and charges for economic returns on tangible and intangible assets utilized in cash flow generation. Net cash flows attributable to the identified intangible assets were discounted to their present value at a rate commensurate with the perceived risk. The projected cash flow assumptions considered contractual relationships, customer attrition, eventual development of new technologies and market competition.

The valuation of completed technology and trade names for the acquisitions noted above was based on the relief-from-royalty income approach, a variation of the income approach. The premise of the relief-from-royalty income approach is that if we had not been assigned the rights to the technology and trade names, we would have to pay royalties to continue to exploit the technology and trade names covered by their claims. To arrive at an estimate of royalty charges, the acquired entities' revenue and profit margins were analyzed to determine the ability to pay a royalty. In addition, the license databases were searched for actual royalty terms based on transactions involving technology and trade name licensing. 

The useful lives of completed technology rights are based on the number of years in which net cash flows have been projected. The useful lives of customer relationships are estimated based upon the length of the relationships currently in place, historical attrition patterns and natural growth and diversification of other potential customers. The useful life of a trade name was estimated based on the period in which a benefit could be ascribed to the identified trade names.  

Assumptions used in forecasting cash flows for each of the identified intangible assets included consideration of the following:

• Historical performance including sales and profitability.

• Business prospects and industry expectations.

• Estimated economic life of asset.

• Development of new technologies.

• Acquisition of new customers.

• Attrition of existing customers.

• Obsolescence of technology over time.

Depending on the structure of a particular acquisition, goodwill and identifiable intangible assets may not be deductible for tax purposes. We determined that goodwill and identifiable intangible assets related to the acquisitions noted above are not deductible.

The factors that contributed to a purchase price resulting in the recognition of goodwill include:

• The premium paid over market capitalization immediately prior to the merger announcement.

• Our belief that the merger will create a more diverse semiconductor company with expansive offerings which will enable us to expand our product offerings.

• Our belief that both companies are committed to improving cost structures and that our combined efforts after the merger should result in a realization of cost savings and an improvement of overall efficiencies.  

The purchase price allocation described above is preliminary for the Mingoa and Centellax acquisitions, primarily with respect to tax contingency matters. A final determination of fair values of assets acquired and liabilities assumed relating to the transaction could differ from the preliminary purchase price allocation and if material differences exist they could result in retrospective revisions to the purchase price allocation. We utilized the straight line method of amortization for completed technology, customer relationships and trade name.

Supplemental pro forma data (unaudited)

The following supplemental pro forma data summarizes the results of operations for 2014 and 2013, as if we completed the acquisitions listed above as of the first day of 2013. The supplemental pro forma data reports actual operating results, adjusted to include the pro forma effect and timing of the impact in cost of goods sold from manufacturing profit in acquired inventory, acquisition-related expenses, restructuring and severance charges, amortization expense of identified intangible assets, incremental interest expense and the related tax effects of the acquisition. Post-acquisition net sales and earnings on a standalone basis are impracticable to determine, as on the acquisition date, we implemented a plan developed prior to the completion of the acquisition and began to immediately integrate the acquisitions into existing operations, engineering groups, sales distribution networks and management structure. The supplemental pro forma information presented is for illustrative purposes only and is not necessarily indicative of the financial position or results of operations that would have been realized if the transaction had been completed on the date indicated, does not reflect synergies that might have been achieved, nor is it indicative of future operating results or financial position. The pro forma adjustments are based upon currently available information and certain assumptions that we believe are reasonable under the circumstances. Supplemental pro forma data is as follows (amounts in thousands, except per share data):

	2014		2013
Net sales	$	1,180,484	$	1,195,356
Net income	$	25,478	$	22,638
Earnings per share:
Basic	$	0.27	$	0.25
Diluted	$	0.27	$	0.25

XML

OTHER LONG-TERM LIABILITIES (Tables)

12 Months Ended

Sep. 28, 2014

Other Liabilities Disclosure [Abstract]

Long-Term Liabilities Table

Other long-term liabilities consisted of (amounts in thousands):

	September 28, 2014		September 29, 2013
Unrecognized tax benefits	$	17,376	$	16,546
Deferred rent	13,671		15,510
Pension and retirement	8,853		7,164
Restructuring	3,836		—
Environmental	200		372
Capital leases	55		2,873
Interest rate swaps	—		368
Other	2,887		1,536
Total	$	46,878	$	44,369

XML

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Earning Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
BASIC
Net income (loss)	$ 32,797	$ (4,293)	$ (6,759)	$ 1,379	$ 14,086	$ 18,279	$ (2,905)	$ 14,214	$ 23,123	$ 43,674	$ (29,675)
Weighted-average common shares outstanding									92,891	89,508	85,837
Basic earnings (loss) per share	$ 0.35	$ (0.05)	$ (0.07)	$ 0.01	$ 0.16	$ 0.20	$ (0.03)	$ 0.16	$ 0.25	$ 0.49	$ (0.35)
DILUTED
Net income (loss)	$ 32,797	$ (4,293)	$ (6,759)	$ 1,379	$ 14,086	$ 18,279	$ (2,905)	$ 14,214	$ 23,123	$ 43,674	$ (29,675)
Weighted-average common shares outstanding									92,891	89,508	85,837
Dilutive effect of stock awards									1,620	1,820	0
Weighted-average common shares outstanding on a diluted basis									94,511	91,328	85,837
Diluted earnings (loss) per share	$ 0.34	$ (0.05)	$ (0.07)	$ 0.01	$ 0.15	$ 0.20	$ (0.03)	$ 0.16	$ 0.24	$ 0.48	$ (0.35)

XML

INCOME TAXES - Components of Deferred Tax Assets (Liabilities) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Income Tax Disclosure [Abstract]
Accounts receivable, net	$ 1,173	$ 945
Inventories	14,501	9,264
Accrued employee benefit expenses	8,806	4,230
Net operating losses	149,571	140,555
Tax credits	144,219	140,069
Accrued other expenses	11,397	6,287
Deferred equity compensation	16,725	14,845
Property and equipment, net	3,115	3,242
Other assets	11,753	9,797
Total deferred tax assets	361,260	329,234
Intangible assets	(127,213)	(100,050)
Deferred Tax Liabilities, Foreign Declared Dividend	(3,642)	0
Effective Income Tax Reconciliation, Deduction, Foreign Declared Dividends, Amount	3,642	0	0
Total deferred tax liabilities	(130,855)	(100,050)
Less valuation allowance	(218,946)	(210,073)
Deferred Tax Assets (Liabilities), Net, Total	$ 11,459	$ 19,111

XML

VALUATION AND QUALIFYING ACCOUNTS (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Allowance for Doubtful Accounts
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ 1,203	$ 1,623	$ 2,149
Charged to costs and expenses	564	(43)	(497)
Charged to other accounts	0	0	0
Deductions- recoveries and write-offs	(430)	(377)	(29)
Balance at end of period	1,337	1,203	1,623
Tax Valuation Allowance
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	210,073	196,147	16,803
Charged to costs and expenses	17,649	18,841	27,729
Charged to other accounts	(8,776)	(4,915)	151,615
Deductions- recoveries and write-offs	0	0	0
Balance at end of period	$ 218,946	$ 210,073	$ 196,147

XML

CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 28, 2014	Sep. 29, 2013
Current assets:
Cash and cash equivalents	$ 162,182	$ 256,433
Accounts receivable, net of allowances of $22,193 at September 28, 2014 and $17,767 at September 29, 2013	191,168	162,103
Inventories	205,005	161,986
Deferred income taxes, net	27,303	15,904
Other current assets	32,924	26,204
Total current assets	618,582	622,630
Property and equipment, net	148,712	125,158
Goodwill	885,610	790,236
Intangible assets, net	351,893	315,175
Deferred income taxes, net	23,494	30,203
Other assets	32,805	29,253
TOTAL ASSETS	2,061,096	1,912,655
Current liabilities:
Accounts payable	75,521	69,623
Accrued liabilities	85,702	63,609
Total current liabilities	161,223	133,232
Credit facility	698,026	676,000
Deferred income taxes	39,339	26,996
Other long-term liabilities	46,878	44,369
Commitments and contingencies (Note 12)
Stockholders' equity:
Preferred stock, $1.00 par value; authorized 1,000 shares; none issued	0	0
Common stock, $0.20 par value; 250,000 authorized, 95,633 issued and outstanding at September 28, 2014 and 93,840 issued and outstanding at September 29, 2013	19,126	18,768
Capital in excess of par value of common stock	799,210	737,896
Retained earnings	298,565	275,442
Accumulated other comprehensive income (loss)	(1,271)	(48)
Total stockholders' equity	1,115,630	1,032,058
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 2,061,096	$ 1,912,655

XML

GOODWILL AND INTANGIBLE ASSETS, NET - Reconciliation of Goodwill (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Beginning balance	$ 790,236	$ 790,236
Additions from acquisitions	95,374	0
Ending balance	$ 885,610	$ 790,236

XML

CONSOLIDATED STATEMENT OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net income (loss)	$ 23,123	$ 43,674	$ (29,675)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	125,747	113,650	136,050
Provision for doubtful accounts	134	(420)	(526)
Amortization of deferred financing costs	795	914	2,215
Write-off of deferred financing cost	526	2,615	32,275
Settlement of foreign currency forward	0	0	(3,701)
Loss on disposition or impairment of assets	9,752	0	1,935
Deferred income taxes	(21,462)	(9,660)	(17,186)
Valuation allowance on deferred income taxes	17,649	18,841	27,729
Stock based compensation expense	43,938	35,242	36,680
Change in assets and liabilities (net of acquisitions):
Accounts receivable	5,239	(8,493)	(23,776)
Inventories	10,263	(2,931)	12,916
Other current assets	9,191	(2,223)	27,355
Other assets	(1,893)	2,361	11,799
Accounts payable	(5,541)	(6,357)	16,017
Accrued liabilities	(13,562)	(17,223)	(37,355)
Other long-term liabilities	2,828	(4,983)	(21,529)
Net cash provided by operating activities	206,727	165,007	171,223
Cash flows from investing activities:
Purchases of property and equipment	(39,444)	(37,327)	(49,079)
Proceeds from the divestiture or sale of assets	41,001	0	325
Proceeds from the sale of investment	0	0	4,352
Settlement of foreign currency forward	0	0	3,701
Payments for acquisitions, net of cash acquired	(337,564)	0	(585,218)
Net cash used in investing activities	(336,007)	(37,327)	(625,919)
Cash flows from financing activities:
Repayments of credit facility	(178,000)	(99,975)	(85,625)
Credit facility issuance costs	(1,521)	(623)	(41,790)
Proceeds from credit facility	289,462	277,539	959,708
Extinguishment of debt	(89,462)	(277,539)	(470,296)
Settlement to terminate capital lease	(3,000)	0	0
Stock settled tax withholdings	1,479	879	850
Exercise proceeds from stock awards	19,029	25,895	31,253
Net cash (used in) provided by financing activities	35,029	(75,582)	392,400
Net increase (decrease) in cash and cash equivalents	(94,251)	52,098	(62,296)
Cash and cash equivalents at beginning of year	256,433	204,335	266,631
Cash and cash equivalents at end of year	162,182	256,433	204,335
Supplemental disclosure of cash flow information Cash paid during the year for:
Interest	29,231	30,886	42,178
Income taxes	$ 3,945	$ 2,777	$ 4,407

XML

STOCK-BASED COMPENSATION - Awards Granted, Weighted-Average Exercise Price, Weighted-Average Fair Value and Weighted-Average Assumptions Used in the Calculation of Compensation Expense (Detail) (Employee Stock Option And Stock Appreciation Rights, USD $)	12 Months Ended
	Sep. 28, 2014
Employee Stock Option And Stock Appreciation Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value per award	$ 20.08
Risk free rate	0.50%
Expected dividend yield	0.00%
Expected life	2 years 8 months 6 days
Expected volatility	31.00%

XML

RESTRUCTURING CHARGES AND SEVERANCE CHARGES (Tables)

12 Months Ended

Sep. 28, 2014

Reflects the restructuring activities and the accrued liabilities

The following table reflects the related restructuring activities and the accrued liabilities at the dates below (amounts in thousands):

	Employee Severance			Contract Termination Costs			Other Associated Costs			Total
Balance at September 29, 2013	$	1,826		$	6,936		$	—		$	8,762
Assumed from acquisition	799			1,885			—			2,684
Provisions	13,915			11,437			9,248			34,600
Reversal of prior provision	(339		)	(2,756		)	—			(3,095		)
Cash expenditures	(13,871		)	(8,786		)	(2,535		)	(25,192		)
Other non-cash settlement	1,749			(519		)	(6,713		)	(5,483		)
Balance at September 28, 2014	$	4,079		$	8,197		$	—		$	12,276

XML

COMMITMENTS AND CONTINGENCIES Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended
	Nov. 30, 1998	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Commitments and Contingencies Disclosure [Abstract]
Lease expense		$ 23.5	$ 20.2	$ 21.4
Description of the contingency loss agreement	In November 1998, we signed an agreement with the three former owners of this facility whereby they have 1) reimbursed us for $0.5 million of past costs, 2) assumed responsibility for 90% of all future clean-up costs, and 3) promised to indemnify and protect us against any and all third-party claims relating to the contamination of the facility
Accrued workers' compensation liabilities		$ 1.9	$ 1.5
Allegations description		The complaint alleges, inter alia, that programmable logic devices manufactured and sold by our subsidiary Microsemi - SoC infringe United States Patent Numbers 5,687,325, 6,260,087 and 6,272,646 assigned to Intellectual Ventures II LLC, and seeks damages and other relief at law or in equity as the court deems appropriate
Defendant action		On August 8, 2011, the defendants filed a motion to stay the litigation pending conclusion of reexamination of the patents-in-suit by the United States Patent & Trademark Office.
Decision by court		The Court has not yet decided the motion to transfer or motion to stay. Discovery has not yet commenced and no trial date has been set.

XML

VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Sep. 28, 2014

Valuation and Qualifying Accounts [Abstract]

VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS

(amounts in thousands)

Column A	Column B		Column C			Column D			Column E			Column F
Classification	Balance at beginning of period		Charged to costs and expenses			Charged to other accounts			Deductions- recoveries and write-offs			Balance at end of period
Allowance for doubtful accounts
September 30, 2012	$	2,149	$	(497	)	$	—		$	(29	)	$	1,623
September 29, 2013	$	1,623	$	(43	)	$	—		$	(377	)	$	1,203
September 28, 2014	$	1,203	$	564		$	—		$	(430	)	$	1,337
Tax valuation allowance
September 30, 2012	$	16,803	$	27,729		$	151,615		$	—		$	196,147
September 29, 2013	$	196,147	$	18,841		$	(4,915	)	$	—		$	210,073
September 28, 2014	$	210,073	$	17,649		$	(8,776	)	$	—		$	218,946

XML

SEGMENT INFORMATION (Tables)

12 Months Ended

Sep. 28, 2014

Segment Reporting [Abstract]

Net Sales, End Market and Long Lived Assets by Geographic Area

Property and equipment, net by geographic area are as follows (amounts in thousands):

	2014		2013		2012
United States	$	117,867	$	100,736	$	93,496
Europe	12,167		12,558		13,253
Asia	16,766		10,209		7,912
Other	1,912		1,655		1,485
Total	$	148,712	$	125,158	$	116,146

Net sales based on a customer's ship-to location and by estimated end market are as follows (amounts in thousands):

	2014		2013		2012
Net Sales:
United States	$	604,358	$	514,632	$	501,257
Europe	163,669		142,343		165,942
Asia	338,448		292,589		320,430
Other	31,788		26,380		24,866
Total	$	1,138,263	$	975,944	$	1,012,495
Aerospace	$	169,613	$	187,006	$	212,293
Communications	407,593		278,126		311,952
Defense & Security	302,714		306,311		286,430
Industrial	258,343		204,501		201,820
Total	$	1,138,263	$	975,944	$	1,012,495

XML

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Sep. 28, 2014

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Earnings Per Share

Earnings per share for 2014, 2013 and 2012 were calculated as follows (amounts in thousands, except per share data):

	Fiscal Years
	2014		2013		2012
BASIC
Net income (loss)	$	23,123	$	43,674	$	(29,675	)
Weighted-average common shares outstanding	92,891		89,508		85,837
Basic earnings (loss) per share	$	0.25	$	0.49	$	(0.35	)
DILUTED
Net income (loss)	$	23,123	$	43,674	$	(29,675	)
Weighted-average common shares outstanding for basic	92,891		89,508		85,837
Dilutive effect of stock awards	1,620		1,820		—
Weighted-average common shares outstanding on a diluted basis	94,511		91,328		85,837
Diluted earnings (loss) per share	$	0.24	$	0.48	$	(0.35	)

XML

RESTRUCTURING AND SEVERANCE CHARGES - Restructuring Activities and Accrued Liabilities in the Consolidated Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014 Employee Severance	Sep. 28, 2014 Contract Termination Costs	Sep. 28, 2014 Other Associated Costs	Sep. 28, 2014 Other Facilities	Sep. 28, 2014 Other Facilities Employee Severance	Sep. 28, 2014 Other Facilities Contract Termination Costs	Sep. 28, 2014 Other Facilities Other Associated Costs
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 3,836	$ 0				$ 8,762	$ 1,826	$ 6,936	$ 0
Provisions			(13,915)	(11,437)	(9,248)	(34,600)
Cash expenditures						(25,192)	(13,871)	(8,786)	(2,535)
Other non-cash settlement						(5,483)	1,749	(519)	(6,713)
Ending Balance	$ 3,836	$ 0				$ 12,276	$ 4,079	$ 8,197	$ 0

XML

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

12 Months Ended

Sep. 28, 2014

Organization, Consolidation and Presentation of Financial Statements [Abstract]

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Description of Business

We are a leading designer, manufacturer and marketer of high-performance analog and mixed-signal semiconductor solutions differentiated by power, security, reliability and performance. Our semiconductors manage and control or regulate power, protect against transient voltage spikes and transmit, receive and amplify signals. We offer one of the industry's most comprehensive portfolios of semiconductor technology. Our products include high-performance, high-reliability radio frequency ("RF") and power components, analog and RF integrated circuits, standard and customizable system-on-chip solutions, and mixed-signal and radiation-tolerant field programmable gate arrays. We also offer subsystems and modules that include application-specific power modules and Power-over-Ethernet midspans.

Our products include discrete and integrated component, module, and subsystem solutions that enhance customer designs by improving performance, reliability and power consumption, reducing size or protecting circuits. The principal end markets that we serve include Communications, Defense & Security, Aerospace and Industrial.

Fiscal Year

We report results of operations on the basis of fifty-two and fifty-three week periods. The fiscal year ended on September 28, 2014, September 29, 2013, and September 30, 2012 consisted of fifty-two weeks. In referencing a year, we are referring to the fiscal year ended on the Sunday generally closest to September 30.

Principles of Consolidation and Presentation of Financial Information

The consolidated financial statements include the accounts of Microsemi and our subsidiaries. All intercompany transactions and balances have been eliminated.

Use of Estimates

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the respective reporting periods. Actual results could differ from those estimates.

Reclassifications

Certain prior year amounts have been reclassified to conform to current year presentation.

Cash and Cash Equivalents

We consider all short-term, highly liquid investments with an original maturity of three months or less to be cash equivalents.

Accounts Receivable and Allowance for Doubtful Accounts

Trade accounts receivable are recorded at the invoiced amount and do not bear interest. The accounts receivable amount shown in the balance sheet are trade accounts receivable balances at the respective dates, net of allowance for doubtful accounts. The allowance for doubtful accounts is our best estimate of the amount of probable credit losses in our existing accounts receivable. We determine the allowance based in part on our historical write-off experience and specific review of account balances due. Past due balances are reviewed individually for collectability. All other balances are reviewed on a pooled basis by the age of the receivable. Account balances are charged off against the allowance when we determine that it is probable the receivable will not be recovered. We review our allowance for doubtful accounts quarterly. We do not have any off-balance-sheet credit exposure related to our customers. To date, our allowance for doubtful accounts has generally been within management’s estimates.

Inventories

Inventories are stated at the lower of cost, as determined using the first-in, first-out method, or market. Costs include materials, labor and manufacturing overhead. We evaluate the carrying value of our inventories taking into account such factors as historical and anticipated future sales compared with quantities on hand and the price we expect to obtain for our products in their respective markets. We also evaluate the composition of our inventories to identify any slow-moving, excess or obsolete products. Additionally, inventory write-downs are made based upon such judgments for any inventories that are identified as having a net realizable value less than their cost, which is further reduced by related selling expenses. The net realizable value of our inventories for ongoing operations has generally been within management’s estimates. We have recorded inventory write-downs for discontinued product lines that did not meet gross margin targets, products that are being migrated to newer generations, products that service the large capital spending end markets for which demand has declined, products related to facility closures and losses related to flooding of a facility in Thailand.

Fair Value of Financial Assets and Liabilities

Accounting Standards Codification ("ASC") 825 permits entities to elect the fair value option for certain financial assets and financial liabilities. For financial assets or financial liabilities for which an entity elects the fair value option, ASC 825 requires that the entity record the financial asset or financial liability at fair value rather than at historical cost with changes in fair value recorded in the income statement. ASC 825-25 requires that upfront costs and fees related to items for which the fair value option is elected shall be recognized in earnings as incurred and not deferred.

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. ASC 820 establishes a hierarchy for ranking the quality and reliability of the information used to determine fair values and includes the following classifications:

Level 1: Quoted market prices in active markets for identical assets or liabilities.

Level 2: Observable market based inputs or unobservable inputs that are corroborated by market data.

Level 3: Unobservable inputs that are not corroborated by market data.

The following financial assets and liabilities were measured at fair value on a recurring basis using the type of inputs indicated below and are as follows (amounts in thousands):

	Fair Value Measurements Using:
	Total		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
September 29, 2013
Interest rate swap liabilities	$	643	$	—	$	643	$	—
September 28, 2014
Investment in marketable securities	$	4,139	$	4,139	$	—	$	—
Interest rate swap liabilities	$	77	$	—	$	77	$	—

Property and Equipment

Property and equipment are stated at lower of cost or realizable values. Depreciation is computed on the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized over the shorter of the lease terms or the estimated useful lives. Maintenance and repairs are charged to expense as incurred and the costs of additions and betterments that increase the useful lives of the assets are capitalized.

Long-Lived Assets

We assess the impairment of long-lived assets whenever events or changes in circumstances indicate that their carrying value may not be recoverable from the undiscounted estimated future cash flows expected to result from their use. We are required to make judgments and assumptions in identifying those events or changes in circumstances that may trigger impairment. Some of the factors we consider include:

• Significant decrease in the market value of an asset.

• Significant changes in the extent or manner for which the asset is being used or in its physical condition including manufacturing plant closures.

• A significant change, delay or departure in our business strategy related to the asset.

• Significant negative changes in the business climate, industry or economic conditions.

• Current period operating losses or negative cash flow combined with a history of similar losses or a forecast that indicates continuing losses associated with the use of an asset.

If events or circumstances indicate that the carrying amount of a long-lived asset or asset group may not be recoverable and the expected undiscounted future cash flows attributable to the asset group are less than the carrying value, an impairment loss equal to the excess of the carrying value of the assets within the asset group over their fair value is recorded. The appropriate asset group is determined based on the lowest level of largely independent cash inflows and outflows for the related assets. Depending on the nature of the primary assets in the asset group, fair value is estimated using one of several approaches including replacement cost, appraised values, market quotes or estimated expected future cash flows using a discount rate commensurate with the risk involved.

Goodwill and Intangible Assets

We account for goodwill on an impairment-only approach and amortize intangible assets with definite useful lives over the benefit period, which approximates straight-line expense over the respective useful lives. We assess qualitative factors to determine whether it is more likely than not that an indefinite-lived intangible asset such as goodwill is impaired as the basis for determining whether a quantitative impairment test is required. We assess definite-lived intangible assets for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be fully recoverable. Whenever we determine that there has been an impairment of goodwill or other intangible assets with indefinite lives, we will record an impairment charge against earnings. We operate as one reporting unit and an impairment charge would equal the excess of the carrying value of goodwill in our one reporting unit over its then fair value. The identification of intangible assets and determination of the fair value and useful lives are subjective in nature and often involve the use of significant estimates and assumptions. The judgments made in determining the estimated useful lives assigned to each class of assets can significantly affect net income. We completed our most recent qualitative analysis during the fourth quarter of 2014 and noted no significant factors existed during the fiscal year to indicate that it was more likely than not that the fair value of the reporting unit is less than its carrying amount.

Revenue Recognition, Sales Returns and Allowances

We primarily recognize revenue from customers, including distributors, when title and risk of loss have passed to the customer provided that: 1) evidence of an arrangement exists; 2) delivery has occurred; 3) the fee is fixed or determinable; and 4) collectability is reasonably assured. For substantially all sales, revenue is recognized, net of estimated returns and discounts, at the time the product is shipped.

We enter into distribution agreements that permit rights to limited stock rotations, returns, price protection, and volume purchase and other discounts. We provide an estimated allowance for these rights and record a corresponding reduction in revenue. Our estimated allowance is based on several factors including past history and notification from customers of pending activity. Actual activity under such rights have been within management’s expectations.

We also derive a portion of our revenue from fixed-price contracts. Revenue for these contracts is recorded under a percentage of completion method, which is based on the ratio of total costs incurred to date to estimated total costs at completion. Gross profit expected to be realized on fixed-price contracts is based on periodic estimates of total revenues and costs for each contract. Losses on contracts are accrued when estimated total costs are expected to exceed total revenues. Occasionally, we will enter into contracts on a cost plus fee basis. We recognize revenue based on reimbursements for actual expenses plus the contractually agreed upon fee with the customer.

Research and Development

We expense the cost of research and development as incurred. Research and development expenses principally comprise payroll and related costs, supplies, and the cost of prototypes.

Restructuring Charges

We recognize a liability for restructuring costs when the liability is incurred. The restructuring accruals are based upon management estimates at the time they are recorded and can change depending upon changes in facts and circumstances subsequent to the date the original liability is recorded. The main components of our restructuring charges are workforce reductions and elimination of excess facilities. Workforce-related charges are accrued when it is determined that a liability exists, which is generally when individuals have been notified of their expected termination dates and expected severance payments or when formal severance plans exist, when the severance payments are probable and reasonably estimable. The elimination of excess facilities results in charges for lease termination fees, future contractual commitments to pay lease charges net of estimated sublease income, facility remediation costs and moving costs to remove property and equipment from the facilities. We recognize charges for elimination of excess facilities when we have vacated the premises or ceased use of the facility.

Stock-Based Compensation

Compensation expense for stock options and stock appreciation rights was calculated based on the on the service period of the grant and the grant date or assumption date fair value using the Black-Scholes pricing model. All stock appreciation rights we have granted or assumed are stock-settled. Stock options and stock appreciation rights are granted at exercise prices equal to the closing price of our common stock on the date of grant. Assumed stock options and stock appreciation rights are granted at exercise prices determined in accordance with the acquisition agreement. Expected life and forfeiture rates were estimated based primarily on historical data that were stratified between members of the Board of Directors, executive employees and all other recipients. Expected volatility was estimated based on historical volatility using equally weighted daily price observations over a period approximately equal to the expected life of each option. The risk free interest rate is based on the implied yield currently available on U.S. Treasury securities with an equivalent remaining term. No dividends are expected to be paid.

Compensation expense for restricted shares was calculated based on the service period of the grant and the closing price of our common stock on the date of grant. Restricted shares are subject to forfeiture if a participant does not meet length of service requirements. Restricted stock awards granted to employees typically vest over a three year period and awards granted to non-employee directors vest in accordance with our director compensation policy.

Compensation expense for performance stock units was calculated based upon expected achievement of the performance metrics specified in the grant and the closing price of our common stock on the date of grant, or when a grant contains a market condition, the grant date fair value using a Monte Carlo simulation. The Monte Carlo simulation incorporates estimates of the potential outcomes of the market condition on the grant date fair value of each award.

Accounting For Income Taxes

We account for income taxes under the asset and liability method, whereby deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. We evaluate the need to establish a valuation allowance for deferred tax assets based upon the amount of existing temporary differences, the period in which they are expected to be recovered and expected levels of taxable income. A valuation allowance to reduce deferred tax assets are established when it is more likely than not that some or all of the deferred tax assets will not be realized. We recognize uncertain tax positions when they meet a more-likely-than-not threshold. We recognize potential accrued interest and penalties related to unrecognized tax benefits as income tax expense.

We file U.S. federal, state, and foreign income tax returns in jurisdictions with varying statutes of limitations. Fiscal years 2007 to 2013 generally remain subject to examination by federal and most state tax authorities. In significant foreign jurisdictions, the 2010 to 2013 tax years generally remain subject to examination by tax authorities. We establish liabilities for possible assessments by tax authorities resulting from known tax exposures including, but not limited to, international tax issues and certain tax credits. We are currently undergoing an Internal Revenue Service examination as well as certain state examinations. There have been no significant proposed adjustments to date. We do not believe the results of any audits would have a material impact on our financial position, results of operations or cash flows. We will continue to monitor the status of these audits.

Segment Information

We use the management approach for segment disclosure, which designates the internal organization that is used by management for making operating decisions and assessing performance as the source of our reportable segments. We manage our business on the basis of one reportable segment, as a manufacturer of semiconductors in different geographic areas, including the United States, Europe and Asia.

Foreign Currency

All of our significant subsidiaries outside the United States use the United States dollar ("USD") as their functional currency. We have one subsidiary in China that uses the Chinese renminbi as its functional currency. For subsidiaries that use USD as the functional currency, assets and liabilities are remeasured to USD at the exchange rate in effect at the balance sheet date except for non-monetary assets and capital accounts which are measured at historical rates; revenues, expenses, gains and losses are remeasured at rates of exchange that approximate the rates in effect at the transaction date. For subsidiaries that use the local currency as the functional currency, all assets and liabilities are translated to USD using exchange rates in effect at the end of the period. Resulting translation gains or losses are recognized as a component of other comprehensive income. We also conduct a relatively small portion of our business in a number of foreign currencies, principally the European Union euro, Canadian dollar, British pound, Israeli shekel and Chinese renminbi.

Earnings Per Share

Basic earnings per share have been computed based upon the weighted-average number of common shares outstanding during the respective periods. Diluted earnings per share have been computed, when the result is dilutive, using the treasury stock method for stock awards outstanding during the respective periods. Earnings per share for 2014, 2013 and 2012 were calculated as follows (amounts in thousands, except per share data):

	Fiscal Years
	2014		2013		2012
BASIC
Net income (loss)	$	23,123	$	43,674	$	(29,675	)
Weighted-average common shares outstanding	92,891		89,508		85,837
Basic earnings (loss) per share	$	0.25	$	0.49	$	(0.35	)
DILUTED
Net income (loss)	$	23,123	$	43,674	$	(29,675	)
Weighted-average common shares outstanding for basic	92,891		89,508		85,837
Dilutive effect of stock awards	1,620		1,820		—
Weighted-average common shares outstanding on a diluted basis	94,511		91,328		85,837
Diluted earnings (loss) per share	$	0.24	$	0.48	$	(0.35	)

For 2014, 2013 and 2012, 2.8 million, 1.8 million and 5.1 million awards, respectively, were excluded from the computation of diluted EPS as these stock awards would have been anti-dilutive.

Concentration of Credit Risk and International Sales

Concentrations of credit risk exist because we rely on a significant portion of customers whose principal sales are to the U.S. Government. Approximately 27% of total net sales in 2014 were in the Defense & Security end market, with a very significant amount of these sales to customers whose principal sales are to the U.S. Government or to subcontractors whose material sales are to the U.S. Government. We, as a subcontractor, sell our products to higher-tier subcontractors or to prime contractors based upon purchase orders that usually do not contain all of the conditions included in the prime contract with the U.S. Government. However, these sales are usually subject to termination and/or price renegotiations by virtue of their reference to a U.S. Government prime contract. Therefore, we believe that all of our product sales that ultimately are sold to the U.S. Government may be subject to termination, at the convenience of the U.S. Government or to price renegotiations under the Renegotiation Act. In addition, the shutdown of non-essential U.S. Government services in October 2013 and any future government shutdowns may significantly increase the risk of contract terminations or renegotiations. At least one of our contracts has been terminated in the past due to the termination of the underlying government contract. There can be no assurance that we will not have contract termination or price renegotiation in the future, and any such termination or renegotiation could have a material adverse impact upon our revenues and results of operations.

In addition, net sales from international markets represent a significant portion of total net sales. Our net sales to international customers represented approximately 47% for 2014 and 2013 and 50% for 2012. These sales were principally to customers in Europe and Asia. We maintain reserves for potential credit losses and such losses have been within management’s expectations.

Recently Issued Accounting Standards

In December 2011, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU" No. 2011-11, the objective of which is to provide additional disclosures on the effect or potential effect of rights of setoff associated with an entity's recognized assets and recognized liabilities within the scope of the update. The update primarily impacts financial instruments and derivatives subject to a master netting arrangement or similar agreement. ASU No. 2011-11 is effective for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. The adoption of this ASU did not impact our consolidated financial position, results of operations or cash flows.

In February 2013, the FASB issued ASU No. 2013-04, the objective of which is to provide guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. The guidance in the update requires that these arrangements be recorded as the sum of the amount the reporting entity agreed to pay on the basis of its arrangement among its co-obligors and any additional amount the reporting entity expects to pay on behalf of its co-obligors. ASU 2013-04 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. The adoption of this ASU did not impact our consolidated financial position, results of operations or cash flows.

In July 2013, the FASB issued ASU No. 2013-11 which requires that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss or a tax credit carryforward, with certain exceptions. ASU 2013-11 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. We are currently assessing the impact of this ASU but adoption will only have the potential of affecting the presentation of unrecognized tax benefits and will no impact our consolidated financial position, results of operations or cash flows.

In April 2014, the FASB issued ASU No. 2014-08 which changes the threshold for reporting discontinued operations and adds additional disclosures. The guidance in this ASU updates the definition of discontinued operations to include the disposal of a component or group of components that is disposed of or is classified as held for sale and represents a strategic shift that has (or will have) a major effect on an entity's operations and financial results. ASU 2014-08 is effective prospectively for all disposals of components of an entity that occur with annual periods beginning on or after December 15, 2014, and interim periods therein. We are currently assessing the impact of this ASU on our consolidated financial position and results of operations.

In May 2014, the FASB issued ASU 2014-09 which provides guidance on how an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services and on accounting for costs to obtain or fulfill a contract with a customer. The ASU also requires expanded disclosure regarding the nature, amount, timing and uncertainty of revenue that is recognized. ASU 2014-09 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2016, and can be adopted either retrospectively to each prior reporting period presented or as a cumulative-effect adjustment as of the date of adoption, with early application not permitted. We are currently assessing the adoption and impact of this ASU on our consolidated financial position and results of operations.

In June 2014, the FASB issued ASU 2014-12 which provides guidance on how to account for shared-based payment awards where the terms of the award provide that a performance target that affects vesting could be achieved after the requisite service period. The ASU requires that a performance target that affects vesting and could be achieved after the requisite service period be treated as a performance condition. ASU 2014-09 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2015, and early adoption is permitted. We are currently assessing the impact of this ASU on our consolidated financial position and results of operations.

In August 2014, the FASB issued ASU 2014-15 which provides guidance on managements responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern within one year after the date that the financial statements are issued (or within one year after the date that the financial statements are available to be issued when applicable) and to provide related footnote disclosures. The amendments in this Update are effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted. We are currently assessing the impact of this ASU on our consolidated financial position and results of operations.

XML

Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Sep. 28, 2014	Sep. 29, 2013
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 22,193	$ 17,767
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, authorized	1,000	1,000
Preferred stock, issued	0	0
Common stock, par value	$ 0.20	$ 0.20
Common stock, authorized	250,000	250,000
Common stock, issued	95,633	93,840
Common stock, outstanding	95,633	93,840

XML

EMPLOYEE BENEFIT PLANS

12 Months Ended

Sep. 28, 2014

Postemployment Benefits [Abstract]

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANS

We sponsor 401(k) savings plans whereby participating employees may elect to contribute up to 50% of their eligible wages up to the statutory contribution limit. Employees 50 years of age and older may contribute a further 75% of their eligible wages up to the statutory contribution limit. During 2014, employer contributions were $3.6 million.

In certain entities outside the United States, we provide defined-benefit and defined contribution plans, many in accordance with local regulations. We typically deposit employer contributions with third party trustees, insurance trust funds, or government-managed accounts.

We assumed a pension plan in Germany related to our acquisition of Microsemi - CMPG in 2012 that covers employees with over ten years of active service and provides benefits based on length of service and final pensionable earnings. There are no segregated pension fund assets under this plan.  The pension liability is insured and we have pledged the insurance contracts to the pensioners. Accordingly, the contracts are now considered to be a plan asset. As the plan assets are insurance contracts, the Company does not control the investment strategy and thus cannot influence the return on investments. The insurance payments are guaranteed by the insurer and should the insurer default on its obligation, the security fund for insurance companies in Germany would assume the contracts. As of September 28, 2014, the fair value of plan assets was $5.1 million and benefit obligations were $7.6 million. During 2014, we recorded an unrealized actuarial loss on pension benefits of $0.7 million in other comprehensive income due to a reduction in the discount rate assumption used to determine benefit obligations from 3.2% to 2.1%. There are no employer contributions expected in the next twelve months.

XML

DOCUMENT AND ENTITY INFORMATION (USD $)	12 Months Ended
	Sep. 28, 2014	Nov. 05, 2014	Mar. 28, 2014
Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Sep. 28, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	MSCC
Entity Registrant Name	MICROSEMI CORP
Entity Central Index Key	0000310568
Current Fiscal Year End Date	--09-28
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		95,041,435
Entity Public Float			$ 2,326,000,000

XML

COMMITMENTS AND CONTINGENCIES

12 Months Ended

Sep. 28, 2014

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

Operating Leases

We occupy premises and lease equipment under operating lease agreements expiring through 2029. The aggregate undiscounted future minimum rental payments under these leases are as follows (amounts in thousands):

2015		2016		2017		2018		2019		Thereafter
$	21,639	$	19,154	$	15,150	$	12,652	$	11,711	$	20,645

Lease expense charged to income was $23.5 million in 2014, $20.2 million in 2013 and $21.4 million in 2012.

Contingencies

We are generally self-insured for losses and liabilities related to workers’ compensation and employer’s liability insurance. Accrued workers’ compensation liability was $1.9 million and $1.5 million at September 28, 2014 and September 29, 2013, respectively. Our self-insurance accruals are based on estimates and, while we believe that the amounts accrued are adequate, the ultimate claims may be in excess of the amounts provided.

We are involved in pending litigation, administrative and similar matters arising out of the normal conduct of our business, including litigation relating to acquisitions, employment matters, commercial transactions, contracts, environmental matters and matters related to compliance with governmental regulations. The ultimate aggregate amount of monetary liability or financial impact with respect to these matters is subject to many uncertainties and is therefore not predictable with assurance. In the opinion of management, the final outcome of these matters, if they are adverse, will not have a material adverse effect on our financial position, results of operations or cash flows. However, there can be no assurance with respect to such result, and monetary liability, financial impact or other sanctions imposed on us from these matters could differ materially from those projected.

XML

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Income Statement [Abstract]
Net sales	$ 1,138,263	$ 975,944	$ 1,012,495
Cost of sales	526,760	418,756	459,872
Gross profit	611,503	557,188	552,623
Operating expenses:
Selling, general and administrative	240,946	202,468	212,338
Research and development costs	192,013	170,573	168,516
Amortization of intangible assets	92,809	84,819	104,756
Restructuring and severance charges	31,504	9,901	8,666
Total operating expenses	557,272	467,761	494,276
Operating income	54,231	89,427	58,347
Interest Income (Expense), Net	(27,759)	(30,238)	(39,553)
Other income (expenses):
Other, net	(2,556)	(3,126)	(33,519)
Total other expense	(30,315)	(33,364)	(73,072)
Income (loss) before income taxes	23,916	56,063	(14,725)
Income Tax Expense (Benefit)	793	12,389	14,950
Net income (loss)	23,123	43,674	(29,675)
Earnings (loss) per share:
Basic	$ 0.25	$ 0.49	$ (0.35)
Diluted	$ 0.24	$ 0.48	$ (0.35)
Weighted-average common shares outstanding:
Basic	92,891	89,508	85,837
Diluted	94,511	91,328	85,837
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Translation adjustment	(552)	913	(373)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Actuarial Gain (Loss), before Tax	(671)
Unrealized actuarial loss on pension benefits		(218)	(1,156)
Other comprehensive income (loss)	(1,223)	695	(1,529)
Total comprehensive income (loss)	$ 21,900	$ 44,369	$ (31,204)

XML

ACCRUED LIABILITIES

12 Months Ended

Sep. 28, 2014

Accounts Payable and Accrued Liabilities, Current [Abstract]

ACCRUED LIABILITIES

ACCRUED LIABILITIES

Accrued liabilities consisted of the following components (amounts in thousands):

	September 28, 2014		September 29, 2013
Payroll, bonus and employee benefits	$	34,278	$	24,649
Deferred revenue	11,430		5,565
Outside services	9,616		10,258
Warranties	6,882		2,809
Restructuring and severance	8,439		8,587
Commissions	4,026		2,799
Income taxes	971		2,291
Licenses	1,107		786
Sales and property taxes	1,081		785
Interest	67		1,276
Other	7,805		3,804
	$	85,702	$	63,609

Accrued warranties of $6.9 million includes a $3.8 million balance assumed as part of the Microsemi – FTD acquisition.

XML

GOODWILL AND INTANGIBLE ASSETS, NET

12 Months Ended

Sep. 28, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND INTANGIBLE ASSETS, NET

GOODWILL AND INTANGIBLE ASSETS, NET

Goodwill and intangible assets, net consisted of the following components (amounts in thousands):

	September 28, 2014					September 29, 2013					Life (in years)
	Gross Carrying Value		Accumulated Amortization			Gross Carrying Value		Accumulated Amortization
Amortizable intangible assets
Completed technology	$	402,670	$	(201,337	)	$	309,470	$	(157,472	)	2 to 15
Customer relationships	301,790		(152,462		)	270,030		(107,474		)	4 to 15
Backlog, trade name and other	17,917		(16,685		)	13,341		(12,720		)	1 to 5
	$	722,377	$	(370,484	)	$	592,841	$	(277,666	)
Non-amortizing intangible assets
Goodwill	$	885,610				$	790,236

A reconciliation of our goodwill for the years ended September 28, 2014 and September 29, 2013 is as follows (amounts in thousands):

	September 28, 2014		September 29, 2013
Beginning balance	$	790,236	$	790,236
Additions from acquisitions	95,374		—
Ending balance	$	885,610	$	790,236

Amortization of intangible assets included in operating expenses for each of the three fiscal years in the period ended September 28, 2014 is as follows (amounts in thousands):

	2014		2013		2012
Amortizable intangible assets
Completed technology	$	43,863	$	39,005	$	40,621
Customer relationships	44,988		42,589		41,451
Backlog, trade name and other	3,958		3,225		22,684
	$	92,809	$	84,819	$	104,756

Estimated amortization expense in each of the five succeeding years and thereafter is as follows (amounts in thousands):

	2015		2016		2017		2018		2019		Thereafter
Amortization expense	$	88,186	$	83,638	$	80,473	$	37,838	$	15,573	$	46,185

XML

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

12 Months Ended

Sep. 28, 2014

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Fiscal Year

Fiscal Year

We report results of operations on the basis of fifty-two and fifty-three week periods. The fiscal year ended on September 28, 2014, September 29, 2013, and September 30, 2012 consisted of fifty-two weeks. In referencing a year, we are referring to the fiscal year ended on the Sunday generally closest to September 30.

Principles of Consolidation and Presentation of Financial Information

Principles of Consolidation and Presentation of Financial Information

The consolidated financial statements include the accounts of Microsemi and our subsidiaries. All intercompany transactions and balances have been eliminated.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the respective reporting periods. Actual results could differ from those estimates.

Cash and Cash Equivalents

Cash and Cash Equivalents

We consider all short-term, highly liquid investments with an original maturity of three months or less to be cash equivalents.

Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block]

Accounts Receivable and Allowance for Doubtful Accounts

Trade accounts receivable are recorded at the invoiced amount and do not bear interest. The accounts receivable amount shown in the balance sheet are trade accounts receivable balances at the respective dates, net of allowance for doubtful accounts. The allowance for doubtful accounts is our best estimate of the amount of probable credit losses in our existing accounts receivable. We determine the allowance based in part on our historical write-off experience and specific review of account balances due. Past due balances are reviewed individually for collectability. All other balances are reviewed on a pooled basis by the age of the receivable. Account balances are charged off against the allowance when we determine that it is probable the receivable will not be recovered. We review our allowance for doubtful accounts quarterly. We do not have any off-balance-sheet credit exposure related to our customers. To date, our allowance for doubtful accounts has generally been within management’s estimates.

Inventories

Inventories

Inventories are stated at the lower of cost, as determined using the first-in, first-out method, or market. Costs include materials, labor and manufacturing overhead. We evaluate the carrying value of our inventories taking into account such factors as historical and anticipated future sales compared with quantities on hand and the price we expect to obtain for our products in their respective markets. We also evaluate the composition of our inventories to identify any slow-moving, excess or obsolete products. Additionally, inventory write-downs are made based upon such judgments for any inventories that are identified as having a net realizable value less than their cost, which is further reduced by related selling expenses. The net realizable value of our inventories for ongoing operations has generally been within management’s estimates. We have recorded inventory write-downs for discontinued product lines that did not meet gross margin targets, products that are being migrated to newer generations, products that service the large capital spending end markets for which demand has declined, products related to facility closures and losses related to flooding of a facility in Thailand.

Fair Value of Financial Assets and Liabilities

Fair Value of Financial Assets and Liabilities

Accounting Standards Codification ("ASC") 825 permits entities to elect the fair value option for certain financial assets and financial liabilities. For financial assets or financial liabilities for which an entity elects the fair value option, ASC 825 requires that the entity record the financial asset or financial liability at fair value rather than at historical cost with changes in fair value recorded in the income statement. ASC 825-25 requires that upfront costs and fees related to items for which the fair value option is elected shall be recognized in earnings as incurred and not deferred.

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. ASC 820 establishes a hierarchy for ranking the quality and reliability of the information used to determine fair values and includes the following classifications:

Level 1: Quoted market prices in active markets for identical assets or liabilities.

Level 2: Observable market based inputs or unobservable inputs that are corroborated by market data.

Level 3: Unobservable inputs that are not corroborated by market data.

The following financial assets and liabilities were measured at fair value on a recurring basis using the type of inputs indicated below and are as follows (amounts in thousands):

	Fair Value Measurements Using:
	Total		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
September 29, 2013
Interest rate swap liabilities	$	643	$	—	$	643	$	—
September 28, 2014
Investment in marketable securities	$	4,139	$	4,139	$	—	$	—
Interest rate swap liabilities	$	77	$	—	$	77	$	—

Property and Equipment

Property and Equipment

Property and equipment are stated at lower of cost or realizable values. Depreciation is computed on the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized over the shorter of the lease terms or the estimated useful lives. Maintenance and repairs are charged to expense as incurred and the costs of additions and betterments that increase the useful lives of the assets are capitalized.

Long-Lived Assets

Long-Lived Assets

We assess the impairment of long-lived assets whenever events or changes in circumstances indicate that their carrying value may not be recoverable from the undiscounted estimated future cash flows expected to result from their use. We are required to make judgments and assumptions in identifying those events or changes in circumstances that may trigger impairment. Some of the factors we consider include:

• Significant decrease in the market value of an asset.

• Significant changes in the extent or manner for which the asset is being used or in its physical condition including manufacturing plant closures.

• A significant change, delay or departure in our business strategy related to the asset.

• Significant negative changes in the business climate, industry or economic conditions.

• Current period operating losses or negative cash flow combined with a history of similar losses or a forecast that indicates continuing losses associated with the use of an asset.

If events or circumstances indicate that the carrying amount of a long-lived asset or asset group may not be recoverable and the expected undiscounted future cash flows attributable to the asset group are less than the carrying value, an impairment loss equal to the excess of the carrying value of the assets within the asset group over their fair value is recorded. The appropriate asset group is determined based on the lowest level of largely independent cash inflows and outflows for the related assets. Depending on the nature of the primary assets in the asset group, fair value is estimated using one of several approaches including replacement cost, appraised values, market quotes or estimated expected future cash flows using a discount rate commensurate with the risk involved.

Goodwill and Intangible Assets

Goodwill and Intangible Assets

We account for goodwill on an impairment-only approach and amortize intangible assets with definite useful lives over the benefit period, which approximates straight-line expense over the respective useful lives. We assess qualitative factors to determine whether it is more likely than not that an indefinite-lived intangible asset such as goodwill is impaired as the basis for determining whether a quantitative impairment test is required. We assess definite-lived intangible assets for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be fully recoverable. Whenever we determine that there has been an impairment of goodwill or other intangible assets with indefinite lives, we will record an impairment charge against earnings. We operate as one reporting unit and an impairment charge would equal the excess of the carrying value of goodwill in our one reporting unit over its then fair value. The identification of intangible assets and determination of the fair value and useful lives are subjective in nature and often involve the use of significant estimates and assumptions. The judgments made in determining the estimated useful lives assigned to each class of assets can significantly affect net income.

Revenue Recognition, Sales Returns and Allowances

Revenue Recognition, Sales Returns and Allowances

We primarily recognize revenue from customers, including distributors, when title and risk of loss have passed to the customer provided that: 1) evidence of an arrangement exists; 2) delivery has occurred; 3) the fee is fixed or determinable; and 4) collectability is reasonably assured. For substantially all sales, revenue is recognized, net of estimated returns and discounts, at the time the product is shipped.

We enter into distribution agreements that permit rights to limited stock rotations, returns, price protection, and volume purchase and other discounts. We provide an estimated allowance for these rights and record a corresponding reduction in revenue. Our estimated allowance is based on several factors including past history and notification from customers of pending activity. Actual activity under such rights have been within management’s expectations.

We also derive a portion of our revenue from fixed-price contracts. Revenue for these contracts is recorded under a percentage of completion method, which is based on the ratio of total costs incurred to date to estimated total costs at completion. Gross profit expected to be realized on fixed-price contracts is based on periodic estimates of total revenues and costs for each contract. Losses on contracts are accrued when estimated total costs are expected to exceed total revenues. Occasionally, we will enter into contracts on a cost plus fee basis. We recognize revenue based on reimbursements for actual expenses plus the contractually agreed upon fee with the customer.

Research and Development

Research and Development

We expense the cost of research and development as incurred. Research and development expenses principally comprise payroll and related costs, supplies, and the cost of prototypes.

Restructuring Charges

Restructuring Charges

We recognize a liability for restructuring costs when the liability is incurred. The restructuring accruals are based upon management estimates at the time they are recorded and can change depending upon changes in facts and circumstances subsequent to the date the original liability is recorded. The main components of our restructuring charges are workforce reductions and elimination of excess facilities. Workforce-related charges are accrued when it is determined that a liability exists, which is generally when individuals have been notified of their expected termination dates and expected severance payments or when formal severance plans exist, when the severance payments are probable and reasonably estimable. The elimination of excess facilities results in charges for lease termination fees, future contractual commitments to pay lease charges net of estimated sublease income, facility remediation costs and moving costs to remove property and equipment from the facilities. We recognize charges for elimination of excess facilities when we have vacated the premises or ceased use of the facility.

Stock-Based Compensation

Stock-Based Compensation

Compensation expense for stock options and stock appreciation rights was calculated based on the on the service period of the grant and the grant date or assumption date fair value using the Black-Scholes pricing model. All stock appreciation rights we have granted or assumed are stock-settled. Stock options and stock appreciation rights are granted at exercise prices equal to the closing price of our common stock on the date of grant. Assumed stock options and stock appreciation rights are granted at exercise prices determined in accordance with the acquisition agreement. Expected life and forfeiture rates were estimated based primarily on historical data that were stratified between members of the Board of Directors, executive employees and all other recipients. Expected volatility was estimated based on historical volatility using equally weighted daily price observations over a period approximately equal to the expected life of each option. The risk free interest rate is based on the implied yield currently available on U.S. Treasury securities with an equivalent remaining term. No dividends are expected to be paid.

Compensation expense for restricted shares was calculated based on the service period of the grant and the closing price of our common stock on the date of grant. Restricted shares are subject to forfeiture if a participant does not meet length of service requirements. Restricted stock awards granted to employees typically vest over a three year period and awards granted to non-employee directors vest in accordance with our director compensation policy.

Compensation expense for performance stock units was calculated based upon expected achievement of the performance metrics specified in the grant and the closing price of our common stock on the date of grant, or when a grant contains a market condition, the grant date fair value using a Monte Carlo simulation. The Monte Carlo simulation incorporates estimates of the potential outcomes of the market condition on the grant date fair value of each award.

Accounting For Income Taxes

Accounting For Income Taxes

We account for income taxes under the asset and liability method, whereby deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. We evaluate the need to establish a valuation allowance for deferred tax assets based upon the amount of existing temporary differences, the period in which they are expected to be recovered and expected levels of taxable income. A valuation allowance to reduce deferred tax assets are established when it is more likely than not that some or all of the deferred tax assets will not be realized. We recognize uncertain tax positions when they meet a more-likely-than-not threshold. We recognize potential accrued interest and penalties related to unrecognized tax benefits as income tax expense.

Segment Information

Segment Information

We use the management approach for segment disclosure, which designates the internal organization that is used by management for making operating decisions and assessing performance as the source of our reportable segments. We manage our business on the basis of one reportable segment, as a manufacturer of semiconductors in different geographic areas, including the United States, Europe and Asia.

Foreign Currency

Foreign Currency

All of our significant subsidiaries outside the United States use the United States dollar ("USD") as their functional currency. We have one subsidiary in China that uses the Chinese renminbi as its functional currency. For subsidiaries that use USD as the functional currency, assets and liabilities are remeasured to USD at the exchange rate in effect at the balance sheet date except for non-monetary assets and capital accounts which are measured at historical rates; revenues, expenses, gains and losses are remeasured at rates of exchange that approximate the rates in effect at the transaction date. For subsidiaries that use the local currency as the functional currency, all assets and liabilities are translated to USD using exchange rates in effect at the end of the period. Resulting translation gains or losses are recognized as a component of other comprehensive income. We also conduct a relatively small portion of our business in a number of foreign currencies, principally the European Union euro, Canadian dollar, British pound, Israeli shekel and Chinese renminbi.

Earnings Per Share

Earnings Per Share

Basic earnings per share have been computed based upon the weighted-average number of common shares outstanding during the respective periods. Diluted earnings per share have been computed, when the result is dilutive, using the treasury stock method for stock awards outstanding during the respective periods.

Concentration of Credit Risk and Foreign Sales

Concentration of Credit Risk and International Sales

Concentrations of credit risk exist because we rely on a significant portion of customers whose principal sales are to the U.S. Government. Approximately 27% of total net sales in 2014 were in the Defense & Security end market, with a very significant amount of these sales to customers whose principal sales are to the U.S. Government or to subcontractors whose material sales are to the U.S. Government. We, as a subcontractor, sell our products to higher-tier subcontractors or to prime contractors based upon purchase orders that usually do not contain all of the conditions included in the prime contract with the U.S. Government. However, these sales are usually subject to termination and/or price renegotiations by virtue of their reference to a U.S. Government prime contract. Therefore, we believe that all of our product sales that ultimately are sold to the U.S. Government may be subject to termination, at the convenience of the U.S. Government or to price renegotiations under the Renegotiation Act. In addition, the shutdown of non-essential U.S. Government services in October 2013 and any future government shutdowns may significantly increase the risk of contract terminations or renegotiations. At least one of our contracts has been terminated in the past due to the termination of the underlying government contract. There can be no assurance that we will not have contract termination or price renegotiation in the future, and any such termination or renegotiation could have a material adverse impact upon our revenues and results of operations.

In addition, net sales from international markets represent a significant portion of total net sales. Our net sales to international customers represented approximately 47% for 2014 and 2013 and 50% for 2012. These sales were principally to customers in Europe and Asia. We maintain reserves for potential credit losses and such losses have been within management’s expectations.

XML

RESTRUCTURING CHARGES AND SEVERANCE CHARGES

12 Months Ended

Sep. 28, 2014

Restructuring and Related Activities [Abstract]

RESTRUCTURING CHARGES AND SEVERANCE CHARGES

RESTRUCTURING AND SEVERANCE CHARGES

The following table reflects the related restructuring activities and the accrued liabilities at the dates below (amounts in thousands):

	Employee Severance			Contract Termination Costs			Other Associated Costs			Total
Balance at September 29, 2013	$	1,826		$	6,936		$	—		$	8,762
Assumed from acquisition	799			1,885			—			2,684
Provisions	13,915			11,437			9,248			34,600
Reversal of prior provision	(339		)	(2,756		)	—			(3,095		)
Cash expenditures	(13,871		)	(8,786		)	(2,535		)	(25,192		)
Other non-cash settlement	1,749			(519		)	(6,713		)	(5,483		)
Balance at September 28, 2014	$	4,079		$	8,197		$	—		$	12,276

We recorded net provisions for employee severance of $13.6 million for 2014, which covered approximately 350 individuals in engineering, manufacturing, administration and sales. Employee severance is expected to be paid within the next twelve months.

We recorded provisions for contract termination costs of $11.4 million for 2014, of which $7.9 million was recorded for the fair value at the cease-use date of operating lease liabilities for space we have exited and $3.0 million was recorded for lease termination costs. Facilities consisted of manufacturing sites, as well as sales, engineering and administrative space. We recorded a $2.8 million reversal of prior provision related to a lease termination agreement executed during 2014 for a manufacturing facility in Scottsdale, Arizona. We recorded provisions for this facility when it ceased production activities in 2011.

We recorded net provisions for other associated costs for restructuring of $9.2 million for 2014 primarily for facility and equipment impairments and costs incurred to close facilities and relocate operations, and included in this amount was a charge of $1.5 million related to the sale of a property that was previously used primarily as a manufacturing facility.

XML

OTHER LONG-TERM LIABILITIES

12 Months Ended

Sep. 28, 2014

Other Liabilities Disclosure [Abstract]

OTHER LONG-TERM LIABILITIES

OTHER LONG-TERM LIABILITIES

Other long-term liabilities consisted of (amounts in thousands):

	September 28, 2014		September 29, 2013
Unrecognized tax benefits	$	17,376	$	16,546
Deferred rent	13,671		15,510
Pension and retirement	8,853		7,164
Restructuring	3,836		—
Environmental	200		372
Capital leases	55		2,873
Interest rate swaps	—		368
Other	2,887		1,536
Total	$	46,878	$	44,369

XML

STOCK-BASED COMPENSATION - Stock Option and Stock Appreciation Right Exercise Price Range (Details) (Employee Stock Option And Stock Appreciation Rights, USD $) In Thousands, except Per Share data, unless otherwise specified	Sep. 28, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercisable stock options, Quantity	2,391
Exercisable stock options, Weighted Average Exercise Price	$ 22.91
Outstanding stock options, Quantity	2,668
Outstanding stock options, Weighted Average Exercise Price	$ 22.70
$10.00 to $20.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercisable stock options, Quantity	521
Exercisable stock options, Weighted Average Exercise Price	$ 14.33
Outstanding stock options, Quantity	607
Outstanding stock options, Weighted Average Exercise Price	$ 14.34
Greater than $20.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercisable stock options, Quantity	1,870
Exercisable stock options, Weighted Average Exercise Price	$ 25.30
Outstanding stock options, Quantity	2,061
Outstanding stock options, Weighted Average Exercise Price	$ 25.16

XML

INCOME TAXES

12 Months Ended

Sep. 28, 2014

Income Tax Disclosure [Abstract]

INCOME TAXES

INCOME TAXES

Pretax income (loss) was generated from the following sources for each of the three fiscal years in the period ended September 28, 2014 (amounts in thousands):

	2014			2013			2012
Domestic	$	(62,702	)	$	(38,709	)	$	(88,964	)
Foreign	86,618			94,772			74,239
Total	$	23,916		$	56,063		$	(14,725	)

The provision for income taxes consisted of the following components for each of the three fiscal years in the period ended September 28, 2014 (amounts in thousands):

	2014			2013		2012
Current:
Federal	$	—		$	812	$	(16	)
State	264			806		228
Foreign	3,914			3,115		3,458
Deferred:
Federal	(6,534		)	2,306		5,061
State	(155		)	1,385		2,255
Foreign	3,304			3,965		3,964
	$	793		$	12,389	$	14,950

We recorded a provision for income taxes of $0.8 million on pretax income of $23.9 million in 2014 compared to a provision for income taxes of $12.4 million on pre-tax income of $56.1 million in 2013, and a provision for income taxes of $15.0 million on pretax loss of $14.7 million in 2012. These provisions for income taxes were primarily due to the tax provision on profitable entities in foreign jurisdictions, U.S. tax provision relating to deferred tax liabilities that will not provide future sources of income to realize deferred tax assets, and release of valuation allowance due to additional deferred tax liabilities acquired through purchase accounting. We had cumulative operating losses for the three years ended in 2014 for our U.S. operations and several foreign operations and accordingly, have provided a full valuation allowance on certain of our U.S. and foreign net deferred tax assets as we have determined that it is more likely than not that the tax benefits will not be realized in the future.

During 2014 and 2013 we increased the valuation allowance by $8.9 million and $13.9 million, respectively, which primarily related to deductions for intangible (non-goodwill) amortization, partially offset by the release of valuation allowance due to the deferred tax liabilities acquired. During 2012 we increased the valuation allowance by $179.3 million, which primarily related to the acquisition of Microsemi - CMPG during the quarter ended January 1, 2012, and the recording of the deferred tax assets related to the acquisition.

We have federal and state net operating losses ("NOLs") of approximately $308.7 million and $170.0 million, respectively, that begin expiring in 2021 and 2014, respectively. Of the total NOL carryforward, $34.6 million related to the excess tax benefit from employee stock compensation and stockholders' equity will increase by $34.6 million if and when such excess tax benefits are ultimately realized. We have foreign NOLs of approximately $259.2 million that begin expiring in 2032. We have federal and state research and experimentation credits of approximately $45.7 million and $66.1 million, respectively. We have foreign research and experimentation credits of approximately $81.5 million that begin expiring in 2017 and incentive deductions of approximately $29.0 million. that carry forward indefinitely. We have federal foreign tax credits of approximately $4.7 million. We have federal and state enterprise zone credits, federal and state investment tax credits, and alternative minimum tax credits totaling $9.0 million that begin expiring in 2015. The utilization of NOLs and credits acquired through an acquisition may be subject to limitations due to change in control.

No provision has been made for future income taxes on undistributed earnings of foreign operations (except for insignificant jurisdictions) since they have been indefinitely reinvested in these operations. Determination of the amount of unrecognized deferred tax liability for temporary differences related to these undistributed earnings is not practicable, as such liability is dependent upon a number of factors, including foreign tax credit position that would exist at the time any remittance would occur. At the end of 2014 and 2013, these undistributed earnings aggregated approximately $430.4 million and $357.4 million, respectively.

The following is a reconciliation of income tax computed at the federal statutory rate to our actual tax expense for each of the three fiscal years in the period ended September 28, 2014 (amounts in thousands):

	2014			2013			2012
Tax computed at federal statutory rate	$	8,372		$	19,622		$	(5,153	)
State taxes, net of federal impact	(1,064		)	(1,468		)	(3,244		)
Foreign income taxed at different rates	(24,667		)	(20,523		)	(18,207		)
Tax credits and incentives	(2,757		)	(5,418		)	(1,096		)
Stock award compensation	1,157			197			295
Unrecognized tax benefits	1,410			(392		)	1,981
U.S. tax on foreign income	4,061			1,374			18,150
Income tax return to provision	(189		)	(875		)	(3,153		)
Non-deductible permanent items	869			167			1,682
Pre-acquisition loss carry forwards	(11,414		)	—			(4,043		)
Expiration of tax attributes	2,931			—			—
Foreign declared dividend	3,642			—			—
Withholding taxes	300			700			—
Other differences, net	493			164			9
Valuation allowance	17,649			18,841			27,729
	$	793		$	12,389		$	14,950

The tax effected deferred tax assets (liabilities) are comprised of the following components (amounts in thousands):

	September 28, 2014			September 29, 2013
Accounts receivable, net	$	1,173		$	945
Inventories	14,501			9,264
Accrued employee benefit expenses	8,806			4,230
Net operating losses	149,571			140,555
Tax credits and incentives	144,219			140,069
Accrued other expenses	11,397			6,287
Deferred equity compensation	16,725			14,845
Property and equipment, net	3,115			3,242
Other assets	11,753			9,797
Total deferred tax assets	361,260			329,234
Intangible assets	(127,213		)	(100,050		)
Foreign declared dividend	(3,642		)	—
Total deferred tax liabilities	(130,855		)	(100,050		)
Less valuation allowance	(218,946		)	(210,073		)
	$	11,459		$	19,111

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (amounts in thousands):

	September 28, 2014			September 29, 2013			September 30, 2012
Beginning gross unrecognized tax benefits	$	69,571		$	58,016		$	32,370
Additions based on tax positions related to the current year	2,389			3,238			12,786
Additions based on current year acquisitions	28,861			—			10,615
Additions based on tax positions of prior years	459			12,845			2,605
Reductions based on tax positions of prior years	—			(2,805		)	(169		)
Reductions for lapses and settlements	(3,609		)	(1,723		)	(191		)
Ending gross unrecognized tax benefit	$	97,671		$	69,571		$	58,016

We recognize interest and penalties accrued related to unrecognized tax benefits in tax expense. During the years ended September 28, 2014, September 29, 2013, and September 30, 2012, we recognized approximately $0.7 million, $0.0 million, and $2.0 million, respectively, in interest and penalties. The cumulative interest and penalties at September 28, 2014 and September 29, 2013 were $6.6 million and $5.9 million, respectively.

Unrecognized tax benefits of $59.8 million (including interest) at September 28, 2014 would impact the effective tax rate if recognized after the valuation allowance has been released. We anticipate a decrease in gross unrecognized tax benefits of approximately $19.7 million within the next twelve months based on federal, state, and foreign expirations in various jurisdictions.

We file U.S. federal, state, and foreign income tax returns in jurisdictions with varying statutes of limitations. Fiscal years 2007 to 2013 generally remain subject to examination by federal and most state tax authorities. In significant foreign jurisdictions, the 2010 to 2013 tax years generally remain subject to examination by tax authorities. We establish liabilities for possible assessments by tax authorities resulting from known tax exposures including, but not limited to, international tax issues and certain tax credits. We are currently undergoing an Internal Revenue Service examination as well as certain state examinations. There have been no significant proposed adjustments to date. As of September 28, 2014, the IRS has raised questions primarily related to transfer pricing. Management believes that the Company's position is appropriate and that an adequate provision has been made for any adjustments that may result from tax examinations. However, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in the Company's tax audits are resolved in a manner not consistent with management's expectations, the Company would be required to adjust its provision for income tax in the period such resolution occurs. While the Company believes its reported results are accurate, any significant adjustments could have a material adverse effect on the Company's results of operations, cash flows and financial position if not resolved within expectations.

XML

CREDIT AGREEMENT AND RELATED INSTRUMENTS

12 Months Ended

Sep. 28, 2014

Debt Disclosure [Abstract]

CREDIT AGREEMENT AND RELATED INSTRUMENTS

CREDIT AGREEMENT AND RELATED INSTRUMENTS

Credit Agreement

We are a party to a senior secured credit facility with Royal Bank of Canada ("RBC") which consists of a term loan facility and a $50.0 million revolving credit facility. As of September 28, 2014, we had $698.0 million in term loan borrowings and no revolving borrowings.

During the quarter ended March 30, 2014, we entered into Amendment No. 5 to our Amended and Restated Credit Agreement dated as of October 13, 2011 (as amended, the "Credit Agreement") with RBC as administrative agent and collateral agent, the other agents party thereto and the lenders referred to therein. The amendment provided for (i) new pricing term for certain of our term loans, (ii) certain modifications to the excess cash flow prepayment and restricted payment provisions, and (iii) an increase in the amount of incremental credit facilities that Microsemi can request to an aggregate amount not to exceed $300.0 million plus certain amounts based on the Company’s leverage ratio. In connection with the amendment, RBC replaced Morgan Stanley Senior Funding, Inc. ("MSSF") as administrative agent and Morgan Stanley & Co. LLC as collateral agent under the Credit Agreement. We accounted for the amendment as a debt modification with respect to amounts that remained in the syndicate and a debt extinguishment with respect to the $89.5 million that exited the syndicate. Accordingly, during the quarter ended March 30, 2014, we recorded debt extinguishment expense of $0.7 million. The amendment did not impact the net principal balance outstanding as amounts that exited the syndicate were replaced.

During the quarter ended December 29, 2013, we entered into a commitment letter with MSSF pursuant to which MSSF committed to provide a $150.0 million incremental term loan under our term loan facility, which MSSF subsequently syndicated during the quarter. The incremental term loan was made available to (i) finance the acquisition of Symmetricom, (ii) repay any existing indebtedness of Symmetricom following the consummation of the merger, and (iii) pay fees and expenses related to the merger. The covenants under the incremental term loan are consistent with those in our existing Credit Agreement. As described above, RBC is the current administrative and collateral agent.

The fair value of our term loans was approximately $693.0 million at September 28, 2014 and $674.3 million at September 29, 2013. We classify this valuation as a Level 2 fair value measurement.

Under our Credit Agreement, we may borrow under a "Base Rate" which approximates the prime rate plus an applicable margin or "Eurodollar Rate" which approximates LIBOR plus an applicable margin. Eurodollar Rate loans are also subject to a Eurodollar Floor. At September 28, 2014, the principal amounts outstanding were Eurodollar Rate loans and interest rate information as of September 28, 2014 were as follows (dollar amounts in thousands):

	Principal Outstanding		Base Rate		Base Rate Margin		Eurodollar Rate Margin		Eurodollar Floor		Applicable Rate
Revolving and swingline loans	$	—	3.25	%	3.25	%	4.25	%	—	%	—	%
Term loan	$	646,375	3.25	%	1.50	%	2.50	%	0.75	%	3.25	%
Incremental term loan	$	51,651	3.25	%	1.75	%	2.75	%	0.75	%	3.50	%

Our term loan facility matures in February 2020 and as of September 28, 2014, there are no scheduled principal repayments until the maturity date. The Credit Agreement stipulates an annual principal payment of a percentage of Excess Cash Flow ("ECF"). The ECF percentage will be 50% if the Consolidated Leverage Ratio (as defined in the Credit Agreement) as of the last day of the fiscal year is equal to or greater than 3.00 to 1.00 and 0% otherwise.

We currently pay an undrawn commitment fee of 0.375% on the unused portion of the revolving facility. If any letters of credit are issued, then we expect to pay a fronting fee equal to 0.25% per annum of the aggregate face amount of each letter of credit and a participation fee on all outstanding letters of credit at a per annum rate equal to the margin then in effect with respect to Eurodollar Rate-based loans on the face amount of such letter of credit.

Our Credit Agreement includes financial covenants requiring a maximum leverage ratio and minimum fixed charge coverage ratio that are applicable only when revolving loans or swingline loans are outstanding at the end of a fiscal quarter and also contains other customary affirmative and negative covenants and events of default. We were in compliance with our covenants as of September 28, 2014.

Interest Rate Swap Agreement

In connection with our Credit Agreement in 2011, we entered into interest rate swap agreements for the purpose of minimizing the variability of cash flows in the interest rate payments of our variable rate borrowings. The cash flows received under the interest rate swap agreements are expected to offset the change in cash flows associated with LIBOR rate borrowings between the effective and maturity dates of the swaps. Our outstanding swap agreement has a notional amount of $24.0 million, a fixed rate of 2.21% and expires in January 2015. We classify our interest rate swap balance as a Level 2 fair value measurement. We determined the fair value of our interest rate swap agreements based on mid-market valuations reported to us by the counterparty to the swap agreements. As of September 29, 2013, we had recorded a current liability of $0.3 million and a long-term liability of $0.4 million. We reflect the change in fair value of the swaps through other income (expense), net and recorded income of $0.6 million in 2014 and income of $1.3 million in 2013.

XML

STOCK-BASED COMPENSATION

12 Months Ended

Sep. 28, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION

Stock Based Compensation

In February 2014, our stockholders approved an amendment to the Microsemi Corporation 2008 Performance Incentive Plan (the "2008 Plan"). The amendment a) increased the share limit by an additional 4.8 million shares so that the amended aggregate share limit for the 2008 Plan is 33.3 million shares; b) extended the Company's authority to grant awards under the 2008 Plan intended to qualify as "performance-based awards" within the meaning of Section 162(m) of the U.S. Internal Revenue Code through the first annual meeting of stockholders that occurs in 2019. The 2008 Plan's termination date of December 5, 2021 remained unchanged, as did the number of shares counted against the share limit for every one share issued in connection with a full-value award, which remained 2.41.

Except as described in this paragraph, shares that are subject to or underlie awards which expire or for any reason, are canceled or terminated, are forfeited, fail to vest, or for any other reason are not paid or delivered under the 2008 Plan will again be available for subsequent awards under the 2008 Plan. Shares that are exchanged by a participant or withheld by the Company as full or partial payment in connection with any award granted under the 2008 Plan that is a full-value award, as well as any shares exchanged by a participant or withheld by the Company or one of its subsidiaries to satisfy the tax withholding obligations related to any full-value award granted under the 2008 Plan will be available for subsequent awards under the 2008 Plan. Shares that are exchanged by a participant or withheld by the Company to pay the exercise price of a stock option or stock appreciation right granted under the 2008 Plan, as well as any shares exchanged or withheld to satisfy the tax withholding obligations related to any such award, will not be available for subsequent awards under the 2008 Plan.

Awards authorized by the 2008 Plan include options, stock appreciation rights, restricted stock, stock bonuses, stock units, performance share awards, and other cash- or share-based awards. The shares issued under the 2008 Plan may be newly issued or shares held by Microsemi as treasury stock. The maximum term of a stock option grant or a stock appreciation right granted under the 2008 Plan is 6 years.

Stock-based compensation expense was $43.9 million in 2014, $35.2 million in 2013 and $36.7 million in 2012. At September 28, 2014, unamortized compensation expense related to unvested stock awards was $46.6 million. The weighted average period over which compensation expense related to these grants will be recognized is 1.4 years.

Remaining share-units available for grant, assuming the issuance of performance units at target, at September 28, 2014, September 29, 2013 and September 30, 2012 under the 2008 Plan were 14.1 million, 12.2 million and 16.0 million, respectively.

Stock Options and Stock Appreciation Rights

Compensation expense for stock options and stock appreciation rights was calculated based on the grant or assumption date using the Black-Scholes pricing model. All stock appreciation rights we have granted or assumed are stock-settled. Stock options and stock appreciation rights are granted at exercise prices equal to the closing price of our common stock on the date of grant. Assumed stock options and stock appreciation rights are granted at exercise prices determined in accordance with the acquisition agreement. Expected life was estimated based on historical exercise data that was stratified between members of the Board of Directors, executive employees and all other recipients. Expected volatility was estimated based on historical volatility using equally weighted daily price observations over a period approximately equal to the expected life of each option. The risk free interest rate is based on the implied yield currently available on U.S. Treasury securities with an equivalent remaining term. No dividends are expected to be paid.

Activity and price information related to stock options and stock appreciation rights are as follows (quantity and intrinsic value in thousands):

	Quantity		Weighted-Average Exercise Price		Intrinsic Value		Weighted Average Remaining Life (Years)
Outstanding at October 2, 2011	9,474		$	19.84	$	12,684	3.1
Exercised	(1,933	)	$	16.82	$	7,619
Forfeited	(567	)	$	24.99
Outstanding at September 30, 2012	6,974		$	20.26	21,557		2.5
Exercised	(1,944	)	$	14.16	$	16,956
Forfeited	(348	)	$	24.33
Outstanding at September 29, 2013	4,682		$	22.49	$	14,702	1.7
Assumed from acquisition	578		$	20.08
Exercised	(1,228	)	$	16.39	$	16,956
Forfeited	(1,364	)	$	26.55
Outstanding at September 28, 2014	2,668		$	22.70	$	7,413	2.0
Exercisable at September 28, 2014	2,404		$	22.91	6,280		1.6
Exercisable and expected to vest after September 28, 2014	2,666		$	22.7	$	7,405	2.0

In connection with the acquisition Symmetricom, Inc. in 2014, we assumed stock options and converted them to Microsemi awards in accordance with the merger agreement.

Quantity and weighted-average exercise prices related to stock options and stock appreciation rights outstanding as of September 28, 2014 and stratified by exercise price are as follows (quantity in thousands):

	Exercisable			Outstanding
Exercise Price	Quantity	Weighted-Average Exercise Price		Quantity	Weighted-Average Exercise Price
Less than or equal to $20.00	521	$	14.33	607	$	14.34
Greater than $20.00	1,870	$	25.30	2,061	$	25.16
	2,391	$	22.91	2,668	$	22.70

Weighted-average fair value and weighted-average assumptions used in the calculation of compensation expense for assumed grants in 2014 are as follows. There were no stock options or stock appreciation rights granted or assumed in 2012 or 2013.

Fair Value		Risk Free Rate		Expected Dividend Yield		Expected Life (Years)	Expected Volatility
$	20.08	0.5	%	—	%	2.7	31.0	%

Restricted Stock Awards

Compensation expense for restricted stock awards was calculated based on the closing price of our common stock on the date of grant. Restricted stock awards are subject to forfeiture if a participant does not meet length of service requirements. Restricted stock awards granted to employees typically vest over a three year period and awards granted to non-employee directors vest on grant date in accordance with our director compensation policy.

Activity and price information related to restricted stock awards are as follows (quantity in thousands):

	Quantity		Weighted-Average Grant Price
Outstanding at October 2, 2011	2,350		$	19.44
Granted	1,656		$	19.41
Vested	(1,281	)	$	19.27
Forfeited	(70	)	$	19.34
Outstanding at September 30, 2012	2,655		$	19.51
Granted	1,887		$	20.39
Vested	(1,363	)	$	19.10
Forfeited	(115	)	$	20.16
Outstanding at September 29, 2013	3,064		$	20.21
Granted	1,589		$	24.67
Vested	(1,393	)	$	20.41
Forfeited	(186	)	$	22.11
Outstanding at September 28, 2014	3,074		$	22.31

Performance Units

Compensation expense for performance stock units was calculated based upon expected achievement of the performance metrics specified in the grant and the closing price of our common stock on the date of grant, or when a grant contains a market condition, the grant date fair value using a Monte Carlo simulation. Vesting of performance units issued in 2013 and 2014 contain a market condition and the Monte Carlo simulation incorporates estimates of the potential outcomes of the market condition on the date fair value of each award.

Performance units granted in 2012 vested based on our growth in net sales and earnings per share (subject to certain adjustments) for 2012 and 2013 in comparison with the growth in net sales and adjusted earnings per share over the same period for a peer group selected by the Compensation Committee. For these performance stock units, 50% of each performance-based award opportunity will be subject to the net sales metric for the performance period and 50% will be subject to the earnings per share metric for the performance period. In November 2013, the Compensation Committee determined that 86% of the target number of units vested at the time of the committee's determination (which represents a vesting percentage of 116% based on the committee’s determination, minus the 30% of the target number of units that vested based on 2012 performance).

Performance units granted in 2013 are eligible to vest based on our achievement of net sales and earnings per share (subject to certain adjustments) levels for 2013, 2014 and 2015. For these performance stock units, 25% of each performance-based award opportunity will be subject to the net sales metric for the performance period and 75% will be subject to the earnings per share metric for the performance period. In addition, the vesting of the award will also be determined in part by our total shareholder return over the performance period covered by the award relative to the peer group. A portion of the award may be earned based on performance in each year of the performance period. In November 2013, the Compensation Committee determined that our performance did not exceed minimum thresholds. Accordingly, no performance units granted in 2013 vested.

Performance units granted in 2014 vested based on our growth in net sales and earnings per share (subject to certain adjustments) for 2014, 2015, and 2016 in comparison with the growth in net sales and adjusted earnings per share over the same period for a peer group selected by the Compensation Committee. For these performance stock units, 40% of each performance-based award opportunity will be subject to the net sales metric for the performance period and 60% will be subject to the earnings per share metric for the performance period. In addition, the vesting of the award will also be determined in part by our total shareholder return over the performance period covered by the award relative to the peer group. A portion of the award may be earned based on performance in each year of the performance period.

Activity and price information related to performance units are as follows (quantity report at target and in thousands):

	Quantity		Weighted-Average Grant Price
Outstanding at September 30, 2012	350		$	17.77
Granted	350		$	21.62
Vested	(105	)	$	17.77
Outstanding at September 29, 2013	595		$	20.03
Granted	332		$	26.27
Vesting in excess of target	56		$	17.77
Vested	(301	)	$	17.77
Outstanding at September 28, 2014	682		$	23.88

XML

COMMITMENTS AND CONTINGENCIES Aggregate Undiscounted Future Minimum Rental Payments (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2014
Commitments and Contingencies Disclosure [Abstract]
2014	$ 21,639
2015	19,154
2016	15,150
2017	12,652
2018	11,711
Thereafter	$ 20,645

XML

RESTRUCTURING AND SEVERANCE CHARGES - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Schedule of Status of Facilities by Location [Line Items]
Recorded severance accruals	$ 3,836	$ 0
Restructuring and severance charges	31,504	9,901	8,666
Employee Severance
Schedule of Status of Facilities by Location [Line Items]
Restructuring, Reversal of Prior Provision	13,576
Restructuring, Settlement and Impairment Provisions	13,915
Number of employees	350,000
Contract Termination Costs
Schedule of Status of Facilities by Location [Line Items]
Restructuring, Settlement and Impairment Provisions	11,437
Restructuring Reserve, Accrual Adjustment	(2,756)
Contract Termination, Operating Lease [Member]
Schedule of Status of Facilities by Location [Line Items]
Restructuring, Settlement and Impairment Provisions	7,900
Contract Termination, Capital Lease [Member]
Schedule of Status of Facilities by Location [Line Items]
Restructuring, Settlement and Impairment Provisions	3,000
Other Associated Costs
Schedule of Status of Facilities by Location [Line Items]
Restructuring, Settlement and Impairment Provisions	9,248
Other Restructuring, Sale Of Manufacturing Facility [Member]
Schedule of Status of Facilities by Location [Line Items]
Restructuring, Settlement and Impairment Provisions	1,500
Other Facilities
Schedule of Status of Facilities by Location [Line Items]
Restructuring, Settlement and Impairment Provisions	34,600
Restructuring Reserve, Accrual Adjustment	(3,095)
Payments for Restructuring	25,192
Restructuring Reserve, Settled without Cash	5,483
Recorded severance accruals	12,276	8,762
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Restructuring Liabilities	2,684
Other Facilities | Employee Severance
Schedule of Status of Facilities by Location [Line Items]
Restructuring Reserve, Accrual Adjustment	(339)
Payments for Restructuring	13,871
Restructuring Reserve, Settled without Cash	(1,749)
Recorded severance accruals	4,079	1,826
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Restructuring Liabilities	799
Other Facilities | Contract Termination Costs
Schedule of Status of Facilities by Location [Line Items]
Payments for Restructuring	8,786
Restructuring Reserve, Settled without Cash	519
Recorded severance accruals	8,197	6,936
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Restructuring Liabilities	1,885
Other Facilities | Other Associated Costs
Schedule of Status of Facilities by Location [Line Items]
Restructuring Reserve, Accrual Adjustment	0
Payments for Restructuring	2,535
Restructuring Reserve, Settled without Cash	6,713
Recorded severance accruals	0	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Restructuring Liabilities	$ 0

XML

EMPLOYEE BENEFIT PLANS (Details) (USD $)	12 Months Ended
	Sep. 28, 2014 Year	Sep. 29, 2013	Sep. 30, 2012
Postemployment Benefits [Abstract]
Maximum annual contribution per employee, percent	50.00%
Minimum age employee may contribute additional percentage of wages	50
Maximum additional contribution allowed after age 50, percent	75.00%
Employer contributions	$ 3,600,000
Fair value of plan assets	5,100,000
Benefit obligations	(7,600,000)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Actuarial Gain (Loss), before Tax	(671,000)
Unrealized actuarial loss on pension benefits		(218,000)	(1,156,000)
Assumptions used calculating benefit obligation, discount rate		2.10%	3.20%
Estimated future employer contributions in the next twelve months	$ 0

XML

COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Sep. 28, 2014

Commitments and Contingencies Disclosure [Abstract]

Aggregate Undiscounted Future Minimum Rental Payments

The aggregate undiscounted future minimum rental payments under these leases are as follows (amounts in thousands):

2015		2016		2017		2018		2019		Thereafter
$	21,639	$	19,154	$	15,150	$	12,652	$	11,711	$	20,645

XML

INCOME TAXES - Additional Information (Detail) (USD $)	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Income Taxes [Line Items]
Income Tax Expense (Benefit)	$ 793,000	$ 12,389,000	$ 14,950,000
Income (loss) before income taxes	23,916,000	56,063,000	(14,725,000)
Increase in valuation allowance	(8,900,000)	13,900,000	179,300,000
Excess tax benefit from employee stock compensation	34,600,000
Estimated increase in equity from excess tax benefit	34,600,000
Tax credits that carryforward indefinitely	9,000,000
Undistributed earnings of foreign operations	430,400,000	357,400,000
Unrecognized tax benefit, interest and penalties	700,000	0	2,000,000
Unrecognized tax benefit, cumulative interest and penalties	6,600,000	5,900,000
Unrecognized tax benefit that would impact effective tax rate	59,800,000
within the next twelve months
Income Taxes [Line Items]
Anticipated decrease in unrecognized tax benefits	19,700,000
Internal Revenue Service (IRS)
Income Taxes [Line Items]
Net operating losses carryforward, subject to expiration	308,700,000
Research and experimentation credits	45,700,000
Federal foreign tax credits	4,700,000
State and Local Jurisdiction
Income Taxes [Line Items]
Net operating losses carryforward, subject to expiration	170,000,000
Research and experimentation credits	66,100,000
Foreign Country
Income Taxes [Line Items]
Net operating losses carryforward, not subject to expiration	259,200,000
Research and experimentation credits	81,500,000
Tax credit related to incentive deductions	$ 29,000,000
Minimum | Internal Revenue Service (IRS)
Income Taxes [Line Items]
Open tax years by major tax jurisdiction	2007
Minimum | Foreign Country
Income Taxes [Line Items]
Open tax years by major tax jurisdiction	2010
Maximum | Internal Revenue Service (IRS)
Income Taxes [Line Items]
Open tax years by major tax jurisdiction	2013
Maximum | Foreign Country
Income Taxes [Line Items]
Open tax years by major tax jurisdiction	2013

XML

UNAUDITED SELECTED QUARTERLY FINANCIAL DATA

12 Months Ended

Sep. 28, 2014

Quarterly Financial Information Disclosure [Abstract]

UNAUDITED SELECTED QUARTERLY FINANCIAL DATA

UNAUDITED SELECTED QUARTERLY FINANCIAL DATA

Selected quarterly financial data are as follows (amounts in thousands, except earnings per share):

	Quarters ended in fiscal year 2014
	September 28, 2014		June 29, 2014			March 30, 2014			December 29, 2013
Net sales	$	303,315	$	292,301		$	287,016		$	255,631
Gross profit	$	170,966	$	153,590		$	148,639		$	138,308
Net income (loss)	$	32,797	$	(4,293	)	$	(6,759	)	$	1,379
Basic earnings (loss) per share	$	0.35	$	(0.05	)	$	(0.07	)	$	0.01
Diluted earnings (loss) per share	$	0.34	$	(0.05	)	$	(0.07	)	$	0.01

	Quarters ended in fiscal year 2013
	September 29, 2013		June 30, 2013		March 31, 2013			December 30, 2012
Net sales	$	250,383	$	242,630	$	235,333		$	247,598
Gross profit	$	142,838	$	138,312	$	133,465		$	142,573
Net income (loss)	$	14,086	$	18,279	$	(2,905	)	$	14,214
Basic earnings (loss) per share	$	0.16	$	0.20	$	(0.03	)	$	0.16
Diluted earnings (loss) per share	$	0.15	$	0.20	$	(0.03	)	$	0.16

XML

INVENTORIES (Tables)

12 Months Ended

Sep. 28, 2014

Inventory Disclosure [Abstract]

Inventories

Inventories are summarized as follows (amounts in thousands):

	September 28, 2014		September 29, 2013
Raw materials	$	55,280	$	36,436
Work in progress	94,044		86,762
Finished goods	55,681		38,788
	$	205,005	$	161,986

XML

INCOME TAXES - Pretax Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Disclosure - Pretax Income (Loss) [Abstract]
Domestic	$ (62,702)	$ (38,709)	$ (88,964)
Foreign	86,618	94,772	74,239
Income (loss) before income taxes	$ 23,916	$ 56,063	$ (14,725)

XML

ACQUISITIONS (Detail) (USD $)	9 Months Ended	12 Months Ended			1 Months Ended		3 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended
	Jun. 30, 2013	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012	Nov. 30, 2013 Symmetricom	Sep. 28, 2014 Centellax [Member]	Sep. 28, 2014 Mingoa and Centellax	Nov. 30, 2013 Completed technology Symmetricom	Sep. 28, 2014 Completed technology Centellax [Member]	Nov. 30, 2013 Customer relationships Symmetricom	Sep. 28, 2014 Customer relationships Centellax [Member]	Nov. 30, 2013 Other Symmetricom	Sep. 28, 2014 Other Centellax [Member]
Business Acquisition [Line Items]
Cash consideration					$ 312,739,000		$ 51,518,000
Cash and cash equivalents					26,337,000		586,000
Accounts receivable					32,131,000		2,307,000
Inventories					47,536,000		5,746,000
Other current assets					57,405,000		189,000
Property and equipment					18,857,000		1,898,000
Other assets					1,063,000		52,000
Identifiable intangible assets					108,800,000	20,730,000		74,100,000	19,100,000	30,400,000	1,360,000	4,300,000	270,000
Goodwill		885,610,000	790,236,000	790,236,000	67,329,000		28,045,000
Current liabilities					(36,753,000)		(5,530,000)
Deferred tax assets, net					(6,347,000)		(2,327,000)
Other non-current liabilities					(3,619,000)		(178,000)
Gross contractual amount of acquired receivables					33,400,000
Contractual cash flows not expected to be collected					1,300,000
Asset Amount					108,800,000	20,730,000		74,100,000	19,100,000	30,400,000	1,360,000	4,300,000	270,000
Useful life of intangible asset								9 years	5 years	9 years	4 years	1 year	1 year
Business Acquisition, Pro Forma Information [Abstract]
Net sales	1,195,356,000	1,180,484,000
Net income	$ 22,638,000	$ 25,478,000
Basic	$ 0.25	$ 0.27
Diluted	$ 0.25	$ 0.27

XML

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands	Total	Common Stock	Capital in Excess of Par value of Common Stock	Retained Earnings	Accumulated Other Comprehensive Income
Balance at Oct. 02, 2011	$ 892,107	$ 17,361	$ 612,517	$ 261,443	$ 786
Balance (in shares) at Oct. 02, 2011		86,806
Proceeds from exercise of stock options (in shares)		1,902
Proceeds from exercise of stock options	31,211	380	30,831
Tax withholding on restricted stock units	(808)		(808)
Grants and cancellations of restricted share awards (in shares)		1,574
Grants and cancellations of restricted share awards	0	315	(315)
Issuance of stock awards related to acquisition	0		0
Stock-based compensation	36,680		36,680
Other comprehensive income, net of tax	(1,529)				(1,529)
Net income	(29,675)			(29,675)
Balance at Sep. 30, 2012	927,986	18,056	678,905	231,768	(743)
Balance (in shares) at Sep. 30, 2012		90,282
Proceeds from exercise of stock options (in shares)		1,944
Proceeds from exercise of stock options	25,297	389	24,908
Tax withholding on restricted stock units	(836)		(836)
Grants and cancellations of restricted share awards (in shares)		1,614
Grants and cancellations of restricted share awards		323	(323)
Stock-based compensation	35,242		35,242
Other comprehensive income, net of tax	695				695
Net income	43,674			43,674
Balance at Sep. 29, 2013	1,032,058	18,768	737,896	275,442	(48)
Balance (in shares) at Sep. 29, 2013		93,840
Proceeds from exercise of stock options (in shares)		1,511
Proceeds from exercise of stock options	19,218	302	18,916
Tax withholding on restricted stock units	(1,485)		(1,485)
Grants and cancellations of restricted share awards (in shares)		282
Grants and cancellations of restricted share awards	0	56	(56)
Stock-based compensation	43,939		43,939
Other comprehensive income, net of tax	(1,223)				(1,223)
Net income	23,123			23,123
Balance at Sep. 28, 2014	$ 1,115,630	$ 19,126	$ 799,210	$ 298,565	$ (1,271)
Balance (in shares) at Sep. 28, 2014		95,633

XML

PROPERTY AND EQUIPMENT

12 Months Ended

Sep. 28, 2014

Property, Plant and Equipment [Abstract]

PROPERTY AND EQUIPMENT

PROPERTY AND EQUIPMENT

Property and equipment consisted of the following components (dollar amounts in thousands):

	Asset Life	September 28, 2014			September 29, 2013
Buildings	20-40 years	$	40,109		$	37,773
Machinery and equipment	3-10 years	339,800			328,652
Furniture and fixtures	5-10 years	9,917			10,918
Leasehold improvements	Shorter of asset life or life of lease	46,967			38,698
		436,793			416,041
Accumulated depreciation		(303,758		)	(303,529		)
Land		2,084			1,725
Construction in progress		13,593			10,921
		$	148,712		$	125,158

Depreciation expense was $32.9 million, $28.8 million and $31.3 million in 2014, 2013 and 2012, respectively.

XML

STOCK-BASED COMPENSATION - Summary of Stock Option Activity and Stock Appreciation Rights (Detail) (Employee Stock Option And Stock Appreciation Rights, USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012	Oct. 02, 2011
Employee Stock Option And Stock Appreciation Rights
Stock Options
Outstanding Beginning Balance	4,682	6,974	9,474
Exercised	(1,228)	(1,944)	(1,933)
Forfeited	(1,364)	(348)	(567)
Assumed from acquisition		578
Outstanding Ending Balance	2,668	4,682	6,974	9,474
Exercisable stock options	2,404
Exercisable and expected to vest stock options	2,666
Weighted average Exercise Price
Outstanding Beginning Balance	$ 22.49	$ 20.26	$ 19.84
Exercised	$ 16.39	$ 14.16	$ 16.82
Forfeited	$ 26.55	$ 24.33	$ 24.99
Assumed from acquisition	$ 20.08
Outstanding Ending Balance	$ 22.70	$ 22.49	$ 20.26	$ 19.84
Intrinsic Value
Outstanding, Intrinsic Value	$ 7,413	$ 14,702	$ 21,557	$ 12,684
Exercised, Intrinsic Value	16,956	16,956	7,619
Exercisable stock options, Intrinsic Value	6,280
Exercisable and expected to vest stock options, Intrinsic Value	$ 7,405
Weighted Average Remaining Life
Outstanding, Weighted Average Remaining Life	2 years 0 months 0 days	1 year 7 months 31 days	2 years 6 months	3 years 1 month 6 days
Exercisable stock options, Weighted Average Exercise Price	$ 22.91
Exercisable stock options, Weighted Average Remaining Life	1 year 6 months 30 days
Exercisable and expected to vest stock options, Weighted Average Exercise Price	$ 22.70
Exercisable and expected to vest stock options, Weighted Average Remaining Life	2 years 0 months 0 days

XML

Net Sales by the Originating Geographic Area and Estimated End Market (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 28, 2014 segment	Sep. 29, 2013	Sep. 30, 2012
Segment Reporting Disclosure [Line Items]
Number of Reportable Segments									1
Net Sales	$ 303,315	$ 292,301	$ 287,016	$ 255,631	$ 250,383	$ 242,630	$ 235,333	$ 247,598	$ 1,138,263	$ 975,944	$ 1,012,495
Aerospace
Segment Reporting Disclosure [Line Items]
Net Sales									169,613	187,006	212,293
Communication
Segment Reporting Disclosure [Line Items]
Net Sales									407,593	278,126	311,952
Defense And Security
Segment Reporting Disclosure [Line Items]
Concentration of credit risk in major customer									27.00%
Net Sales									302,714	306,311	286,430
Industrial
Segment Reporting Disclosure [Line Items]
Net Sales									258,343	204,501	201,820
United States
Segment Reporting Disclosure [Line Items]
Net Sales									604,358	514,632	501,257
Europe
Segment Reporting Disclosure [Line Items]
Net Sales									163,669	142,343	165,942
Asia
Segment Reporting Disclosure [Line Items]
Concentration of credit risk in major customer									10.00%	10.00%	11.00%
Net Sales									338,448	292,589	320,430
Other Geographical [Member]
Segment Reporting Disclosure [Line Items]
Net Sales									$ 31,788	$ 26,380	$ 24,866

XML

PROPERTY AND EQUIPMENT (Tables)

12 Months Ended

Sep. 28, 2014

Property, Plant and Equipment [Abstract]

Components of Property Plant and Equipment

Property and equipment consisted of the following components (dollar amounts in thousands):

	Asset Life	September 28, 2014			September 29, 2013
Buildings	20-40 years	$	40,109		$	37,773
Machinery and equipment	3-10 years	339,800			328,652
Furniture and fixtures	5-10 years	9,917			10,918
Leasehold improvements	Shorter of asset life or life of lease	46,967			38,698
		436,793			416,041
Accumulated depreciation		(303,758		)	(303,529		)
Land		2,084			1,725
Construction in progress		13,593			10,921
		$	148,712		$	125,158

XML

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Additional Information (Detail) (USD $) In Thousands, except Share data in Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Basis of Presentation [Line Items]
Document Fiscal Year Focus									2014
Stock awards excluded from computation of diluted EPS									2.8	1.8	5.1
Net income	$ 32,797	$ (4,293)	$ (6,759)	$ 1,379	$ 14,086	$ 18,279	$ (2,905)	$ 14,214	$ 23,123	$ 43,674	$ (29,675)
International
Basis of Presentation [Line Items]
Percentage of net sales from international market									47.00%	47.00%	50.00%
Defense And Security
Basis of Presentation [Line Items]
Concentration of credit risk in major customer									27.00%
Internal Revenue Service (IRS) | Minimum
Basis of Presentation [Line Items]
Open tax years by major tax jurisdiction									2007
Internal Revenue Service (IRS) | Maximum
Basis of Presentation [Line Items]
Open tax years by major tax jurisdiction									2013
Foreign Country | Minimum
Basis of Presentation [Line Items]
Open tax years by major tax jurisdiction									2010
Foreign Country | Maximum
Basis of Presentation [Line Items]
Open tax years by major tax jurisdiction									2013
Performance stock units
Basis of Presentation [Line Items]
Vesting percentage relative to net sales									40.00%	25.00%	50.00%
Vesting percentage relative to earnings per share									60.00%	75.00%	50.00%

XML

SEGMENT INFORMATION

12 Months Ended

Sep. 28, 2014

Segment Reporting [Abstract]

SEGMENT INFORMATION

SEGMENT INFORMATION

We manage our business on the basis of one reportable segment, as a manufacturer of semiconductors in different geographic areas, including the United States, Europe and Asia. We derive revenue from sales of our high-performance analog/mixed-signal integrated circuits and power and high-reliability individual component semiconductors. These products include individual components as well as integrated circuit solutions that enhance customer designs by improving performance, reliability and battery optimization, reducing size or protecting circuits. The principal markets that we serve include Aerospace, Communications, Defense & Security, and Industrial. We evaluate sales by end-market based on our understanding of end market uses of our products.

Net sales based on a customer's ship-to location and by estimated end market are as follows (amounts in thousands):

	2014		2013		2012
Net Sales:
United States	$	604,358	$	514,632	$	501,257
Europe	163,669		142,343		165,942
Asia	338,448		292,589		320,430
Other	31,788		26,380		24,866
Total	$	1,138,263	$	975,944	$	1,012,495
Aerospace	$	169,613	$	187,006	$	212,293
Communications	407,593		278,126		311,952
Defense & Security	302,714		306,311		286,430
Industrial	258,343		204,501		201,820
Total	$	1,138,263	$	975,944	$	1,012,495

As a percentage of consolidated net sales, customers with a ship-to location in Hong Kong totaled 11% in 2012 and there were no countries outside the United States exceeding 10% in 2014 and 2013.

Property and equipment, net by geographic area are as follows (amounts in thousands):

	2014		2013		2012
United States	$	117,867	$	100,736	$	93,496
Europe	12,167		12,558		13,253
Asia	16,766		10,209		7,912
Other	1,912		1,655		1,485
Total	$	148,712	$	125,158	$	116,146