10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

Form 10-K

(Mark One)

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

For the fiscal year ended December 31, 2022

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO

Commission File Number 000-52024

ALPHATEC HOLDINGS, INC.

(Exact Name of Registrant as Specified in its Charter)

Delaware	20-2463898
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)
1950 Camino Vida Roble, Carlsbad, California	92008
(Address of Principal Executive Offices)	(Zip Code)

(760) 431-9286

(Registrant’s Telephone Number, Including Area Code)

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

Title of Each Class	Trading Symbol(s)	Name of Each Exchange on Which Registered
Common Stock, par value $0.0001 per share	ATEC	The NASDAQ Global Select Market

Securities registered pursuant to Section 12(g) of the Exchange 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 ☐ No ☒

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

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 ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files). Yes ☒ No ☐

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

Large accelerated filer	☐	Accelerated filer	☒
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes Oxley Act (15 U.S.C. 7262 (b)) by the registered public accounting firm that prepared or issued its audit report. ☒

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

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

The aggregate market value of the registrant’s common stock held by non-affiliates of the registrant (without admitting that any person whose shares are not included in such calculation is an affiliate) computed by reference to the price at which the common stock was last sold as of the last business day of the registrant's most recently completed second fiscal quarter (June 30, 2022), was approximately $477.5 million.

The number of outstanding shares of the registrant’s common stock, par value $0.0001 per share, as of February 23, 2023 was 111,109,933.

DOCUMENTS INCORPORATED BY REFERENCE

The following documents (or parts thereof) are incorporated by reference into the following parts of this Form 10-K: Certain information required in Part III of this Annual Report on Form 10-K is incorporated from the Registrant’s Proxy Statement for the 2023 Annual Meeting of Stockholders.

Auditor Firm Id: 34 Auditor Name: Deloitte & Touche LLP Auditor Location: New York, New York, United States

ALPHATEC HOLDINGS, INC.

FORM 10-K—ANNUAL REPORT

For the Fiscal Year Ended December 31, 2022

Table of Contents

		Page
PART I
Item 1.	Business	2
Item 1A.	Risk Factors	19
Item 1B.	Unresolved Staff Comments	33
Item 2.	Properties	33
Item 3.	Legal Proceedings	33
Item 4.	Mine Safety Disclosures	33
PART II
Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	34
Item 6.	Reserved	35
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	36
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	46
Item 8.	Financial Statements and Supplementary Data	46
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	46
Item 9A.	Controls and Procedures	46
Item 9B.	Other Information	47
Item 9C.	Disclosure Regarding Foreign Jurisdictions that Prevent Inspections	47
PART III
Item 10.	Directors, Executive Officers and Corporate Governance	48
Item 11.	Executive Compensation	48
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	48
Item 13.	Certain Relationships and Related Transactions, and Director Independence	48
Item 14.	Principal Accounting Fees and Services	48
PART IV
Item 15.	Exhibits, Financial Statement Schedules	49

In this Annual Report on Form 10-K, the terms “we,” “us,” “our,” “Alphatec Holdings” and “Alphatec” mean Alphatec Holdings, Inc., our subsidiaries and their subsidiaries. “Alphatec Spine” refers to our wholly-owned operating subsidiary Alphatec Spine, Inc. “SafeOp” refers to our wholly owned operating subsidiary SafeOp Surgical, Inc. “EOS” refers to our wholly owned operating subsidiary EOS imaging S.A.

PART I

FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K and, in particular, the description of our "Business" set forth in Item 1, the "Risk Factors" set forth in this Item 1A and our "Management’s Discussion and Analysis of Financial Condition and Results of Operations" set forth in Item 7 contain or incorporate a number of forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the "Securities Act"), and Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), including statements regarding:

•our estimates regarding anticipated operating losses, future revenue, expenses, capital requirements, uses and sources of cash and liquidity, including our anticipated revenue growth and cost savings;

•our ability to achieve profitability, and the potential need to raise additional funding;

•our ability to ensure that we have effective disclosure controls and procedures;

•our ability to meet, and potential liability from not meeting, any outstanding commitments and contractual obligations;

•our ability to maintain compliance with the quality requirements of the United States ("U.S.") Food and Drug Administration ("FDA") and similar foreign regulatory requirements;

•our ability to market, improve, grow, commercialize and achieve market acceptance of any of our products or any product candidates that we are developing or may develop in the future;

•our ability to continue to enhance our product offerings, and to commercialize and achieve market acceptance of any of our products or product candidates;

•the effect of any existing or future federal, state or international regulations on our ability to effectively conduct our business;

•our business strategy and our underlying assumptions about market data, demographic trends, reimbursement trends and pricing trends;

•our ability to maintain an adequate global sales network for our products, including to attract and retain independent sales agents and direct sales representatives;

•our ability to increase the use and promotion of our products by training and educating spine surgeons and our global sales network;

•our ability to attract and retain a qualified management team, as well as other qualified personnel and advisors;

•our ability to enter into licensing and business combination agreements with third parties and to successfully integrate the acquired technology and/or businesses;

•the impact of global economic and political conditions and public health crises on our business and industry; and

•other factors discussed elsewhere in this Annual Report on Form 10-K or any document incorporated by reference herein or therein.

Any or all of our forward-looking statements in this Annual Report may turn out to be wrong. They can be affected by inaccurate assumptions by known or unknown risks and uncertainties. Many factors mentioned in our discussion in this Annual Report on Form 10-K will be important in determining future results. Consequently, no forward-looking statement can be guaranteed. Actual future results may vary materially from expected results.

We also provide a cautionary discussion of risks and uncertainties under “Risk Factors” in Item 1A of this Annual Report. These are factors that we think could cause our actual results to differ materially from expected results. Other factors besides those listed there could also adversely affect us.

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Without limiting the foregoing, the words “believe,” “anticipate,” “plan,” “expect,” “may,” “could,” “would,” “seek,” “intend,” and similar expressions are intended to identify forward-looking statements. There are a number of factors and uncertainties that could cause actual events or results to differ materially from those indicated by such forward-looking statements, many of which are beyond our control, including the factors set forth under “Item 1A Risk Factors.” In addition, the forward-looking statements contained herein represent our estimate only as of the date of this filing and should not be relied upon as representing our estimate as of any subsequent date. While we may elect to update these forward-looking statements at some point in the future, we specifically disclaim any obligation to do so to reflect actual results, changes in assumptions or changes in other factors affecting such forward-looking statements, except as required by applicable law.

Item 1. Business

We are a medical technology company focused on the design, development, and advancement of technology for better surgical treatment of spinal disorders. Through our wholly owned subsidiaries, Alphatec Spine, Inc., SafeOp Surgical, Inc. and EOS imaging S.A., our mission is to revolutionize the approach to spine surgery through clinical distinction. We are focused on developing new approaches that integrate seamlessly with our expanding Alpha InformatiX™ product platform to better inform surgery and to achieve the goal of spine surgery more predictably and reproducibly. We have a broad product portfolio designed to address the spine’s various pathologies. Our ultimate vision is to be the standard bearer in spine.

In 2018, we embarked on a business transformation that has replaced 100% of the executive team, 94% of our Board of Directors, and over 90% of the remaining team with experienced professionals. Efforts that year founded our Organic Innovation Machine™, our in-house product design, development and testing capabilities aimed at the creation of clinical distinction, and furthered the strategic transition of our sales force to a more dedicated, clinically astute team.

From 2019 through 2021, our focus was on building a foundation capable of supporting the organization as we scale into a larger business. We developed and released several key elements of our approach-based portfolio, including a comprehensive posterior fixation system and approach-specific IdentiTi implants. We also acquired and integrated SafeOp, technology that integrates with our approaches to provide information about both the location and the health of nerves intra-operatively. SafeOp became the informational backbone of the Prone TransPsoas (“PTP”) approach, which we developed and launched in 2020 to advance lateral spine surgery. We invested in new headquarters to substantially increase surgeon and sales training capacity and opened a distribution facility in Memphis, TN to ensure predictable and expedient surgical support as we grow. We also acquired EOS imaging to expand on the informational competitive advantage established with SafeOp. EOS systems enable full-body, calibrated, 3D images that integrate throughout the arch of patient spine care to influence procedure planning and improve and objectify the understanding of global alignment. As we execute against our vision for EOS technology, we believe it will set new standards for spine care.

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Our ability to leverage our collective spine experience, coupled with a willingness to invest in every component of the advanced spine approaches that we bring to market has fueled market-leading growth in every year since early 2018.

Revenue from products and services was $350.9 million for the year ended December 31, 2022, representing an increase of $108.6 million, or 45% compared to $242.3 million for the year ended December 31, 2021. We believe our future success will continue to be propelled by the introduction and traction of the distinct procedures and technologies that our procedural investment thesis engenders. We feel that Alphatec is well-positioned to continue to capitalize on spine market dynamics.

Recent Developments

Term Loan

On January 6, 2023, we entered into a $150.0 million term loan (the "Braidwell Term Loan") with Braidwell Transaction Holdings, LLC. The Braidwell Term Loan provides for an initial term loan of $100.0 million which was funded on the closing date. We have the option to draw an additional $50.0 million within 18 months of the closing date. The Braidwell Term Loan matures in January 2028. Borrowings under the Braidwell Term Loan bear interest at an annual rate equal to Term Secured Overnight Financing Rate, a rate per annum equal to the secured overnight financing rate for such SOFR business day ("Term SOFR") plus 5.75%. The outstanding portion of the term loan is secured by substantially all of our assets with the priority interest of the lenders in the Braidwell Term Loan and the Revolving Credit Facility, as defined below, subject to terms of a customary intercreditor agreement.

Revolving Credit Facility

In September 2022, we entered into a revolving credit facility (the “Revolving Credit Facility”) with entities affiliated with MidCap Financial Trust (“MidCap”). The Revolving Credit Facility provides up to $50.0 million in borrowing capacity based on a borrowing base. The borrowing base is calculated based on certain accounts receivable and inventory assets. We may request a $25.0 million increase in the Revolving Credit Facility for a total commitment of up to $75.0 million. The Revolving Credit Facility matures on the earlier of September 29, 2027, or 90 days prior to the final maturity date of any of our unsecured Senior Convertible Notes (the "2026 Notes").

The outstanding loans bear interest at the sum of Term SOFR, plus 3.5% per annum. Interest on borrowings is due monthly. The loan agreements include an unused line fee, which is calculated as 0.50% per annum of either the unused Revolving Credit Facility or a minimum balance. Upon the Revolving Credit Facility’s maturity, any outstanding principal balance, unpaid accrued interest, and all other obligations under the Revolving Credit Facility will be due and payable.

The Revolving Credit Facility contains a lockbox arrangement clause requiring us to maintain a lockbox bank account. If the revolving loan availability is less than 30% of the revolving loan limit for five consecutive business days, or if we are in default, MidCap will apply funds collected from our lockbox account to reduce the outstanding balance of the Revolving Credit Facility.

The outstanding loans are secured by substantially all of our assets with the priority interest of the lenders in the Braidwell Term Loan and the Revolving Credit Facility subject to terms of a customer intercreditor agreement. The loan agreements and other ancillary documents contain customary representations and warranties and affirmative and negative covenants. Under the loan agreements, we are required to maintain a minimum level of liquidity. The loan agreements also include certain events of default, and upon the occurrence of such events of default, all outstanding loans under the Revolving Credit Facility may be accelerated and/or the lenders’ commitments terminated.

Strategy

Our vision is to be the standard bearer in spine. By leveraging our team’s extensive spine experience to create clinically distinct solutions that improve surgical outcomes, we believe that we are positioned to continue to earn share of the U.S. spine market, becoming the partner of choice for spine surgeons, hospitals, healthcare systems, and payors.

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To achieve our vision and build long-term value, we continue to prioritize the following three vital initiatives:

1. Create Clinical Distinction

We are committed to continuing to invest in the development, launch, and promotion of approaches and technologies intended to revolutionize spine surgery. We have developed, and continue to seek to develop, next-generation surgical approaches that advance spine care with seamlessly integrated access systems, implants, positioners, biologics and enabling technologies uniquely designed to beget objective decision-making and to more successfully address the core spine pathologies.

During the year ended December 31, 2022, we continued to drive adoption of the PTP approach, while securing over 40% growth in the EOS opportunity pipeline and executing against developmental initiatives that will further EOS' spine capabilities. We advanced the medialized MIS posterior approach with the Sigma Medialized Access System and the Calibrate PSX Expandable Interbody Implant System, our first expandable interbody implant system. Our pursuit to perfect our procedures inspired the launch of over 10 new technologies during the year ended December 31, 2022. As a result, our comprehensive portfolio now boasts over 90 products across various product categories, of which more than half were launched between July 2018 and December 2022.

With the expansion and increasing capabilities of our product portfolio, we continue to drive year-over-year growth in the number of product categories used per surgery, average revenue per surgery and revenue per surgeon. Aggregate product categories used per surgery expanded to 2.2 for the full-year 2022, compared to 2.0 in the prior year. For the full year 2022, average revenue per surgery expanded 25% and revenue per surgeon increased 17% compared to 2021.

Looking to 2023 and beyond, we intend to continue to pioneer spine innovation. As such, we expect continued growth in the number of products sold into each surgery, revenue per surgery, and revenue per surgeon.

2. Compel Surgeon Adoption

An integral part of our strategy is to compel surgeon adoption of the innovation that we have and will continue to introduce. Central to inspiring surgeon interest is the “ATEC Experience”, an outcomes-based educational program for visiting surgeons facilitated at our headquarters in Carlsbad, CA. The program provides an interactive learning environment tailored to surgeon needs through both a peer-to-peer and subject matter expert approach. We leverage our state-of-the-art, 7-station cadaveric lab to enable visiting surgeons to gain deep practical experience with our procedural solutions and educate participants on our role in shaping innovation.

The surgeon relationships we are creating through that educational program continue to drive strong growth, evidenced by both the increase in surgeon participation in the program and the continued growth of surgeon adoption. Over 400 new and existing surgeons participated in the ATEC Experience in 2022, driving growth in our surgeon user base in 2022 and positioning us well for future growth as we cultivate the surgeon relationships we are creating. Revenue attributable to new surgeon customers has continued to contribute meaningfully to revenue growth overall. Surgeon utilization is also expanding as we earn surgeon confidence and foster surgeon training programs that extend the application of our procedural solutions to increasingly complex spine care.

3. Elevate Distribution

We market and sell our products through a strategic network of independent sales agents and direct sales representatives.

To deliver consistent, predictable growth, we have added, and intend to continue to add, clinically astute and exclusive independent sales agents and direct sales representatives to reach untapped surgeons, hospitals, and national accounts and better penetrate existing accounts and territories. We believe the opportunity to expand our strategic sales network is vast, with approximately one third of U.S. territories, including many of the U.S.' most significant spine markets, still under- or completely unrepresented.

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With our acquisition of EOS in 2021, we aligned EOS’ U.S.-based capital sales team with our regional sales teams and leadership. The EOS sales team will continue to focus on hospital administrators now with the benefit of leads generated by our strategic sales team and enhanced service support.

As we seek to optimize sales productivity, we continually work to upgrade our sales team training and education efforts. That, coupled with the clinical distinction-fueled increase in surgeon adoption drove 39% growth in revenue per established territory in 2022, marking the beginnings of our ability to lever years of investment to elevate our sales channel.

In 2022, we enhanced the expertise within our Memphis distribution facility which opened in 2021. With expedient, flexible access to nearby distribution centers, we believe the facility will ensure centralized surgical support as we grow.

We are in the nascent stages of building an international footprint. In 2022, we commenced a process that will secure regulatory approvals for Australia and Japan and invested in a team and support structure to foster sales in New Zealand. Looking forward, we intend to focus our international investments in economically attractive markets with strong surgeon influence and reasonable regulatory pathways where we believe we can build a direct sales team with the sophistication of our U.S. network.

Spine Anatomy

The spine is the core of the human skeleton and provides important structural support and alignment while remaining flexible to allow movement. The spine is a column of 33 bones that protects the spinal cord and provides the main support for the body. Each bony segment of the spine is referred to as a vertebra (two or more are called vertebrae). The spine has five regions containing groups of similar bones, listed from top to bottom: seven cervical vertebrae in the neck, twelve thoracic vertebrae in the mid-back (each attached to a rib), five lumbar vertebrae in the lower back, five sacral vertebrae fused together to form one bone called the sacrum, which sits in the pelvis, and four coccygeal bones fused together that form the tailbone. At the front of each vertebra is a block of bone called the vertebral body. Vertebrae are stacked on top of each other and separated from each other through a cushioning intervertebral disc in the front, and bony joints in the back, which create the stability and mobility needed for sitting, standing, and walking. Strong muscles and bones, flexible tendons and ligaments, and sensitive nerves contribute to a healthy spine. Pain can be caused when any of these structures is affected by strain, injury, or disease.

The Alphatec Solution

Our procedural investment thesis is unique. Unlike most of our peers, we take a holistic approach to the procedures that we bring to market, willingly investing not just in the highest dollar components of the procedure, but also in the clinically distinct technology that can enhance clinical predictability and reproducibility. As a result, our procedures uniquely incorporate the technology engendered by that thesis: objective information capable of informing the entire continuum of spine patient care and integrated, ergonomic patient positioning and surgical access technology.

Our principal offerings include comprehensive procedural solutions designed and developed to specifically meet the requirements of the various spine approaches that treat conditions ranging from degenerative disc disease to complex deformity and trauma. Depending on the approach, our solutions may comprise objective and automated pre-, intra-, and post-operative information, positioners, access systems, interbody implants, fixation systems, and various biologics offerings; all designed to more predictably improve patient outcomes by achieving the three goals of spine surgery: (1) decompression, (2) stabilization, and (3) alignment.

To deliver on our goal of driving above-market revenue growth, we continue to leverage investments made to equip the sales channel with a clinically distinct portfolio and to build a strong pipeline of innovation that will compel surgeon adoption well into the future. While new products launched since new management took over in late 2017 accounted for less than 10% of total revenue in 2018, that percentage increased to 91% in 2022.

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Our flagship approach, the PTP approach, was designed and released in 2020 to directly address the known challenges that limited earlier adoption of the technique by the team that created the original lateral approach for spinal fusion. Engineered to leverage the benefits achieved by lateral spinal fusion procedures, such as reduced blood loss, shorter hospital stays, and quicker recovery times, PTP treats a wide range of patient pathologies and, to date, surgeons have performed over 5,500 PTP procedures.
 

Compared to a standard lateral procedure, the PTP approach positions the patient in a prone (face down) position, allowing simultaneous access to the spine laterally (from the side) and posteriorly (from the back), all while in a more familiar surgical position and offering a more streamlined approach. Single-position lateral surgery in the prone position minimizes unnecessary patient repositioning, enhances time efficiencies, provides surgeons with increased optionality, and achieves spinal alignment objectives more reproducibly.
 

The PTP procedure is enabled through a combination of purposefully-developed technologies that address the unique challenges of approaching the spine laterally while prone. One such challenge, and probably the greatest limit to earlier adoption of lateral approaches overall, is the need to safely and predictably navigate across the lumbar plexus, an essential collection of nerves, to access the lumbar spine during surgery. Key to our PTP approach is the integration of SafeOp Advanced Neuromonitoring, a proprietary technology that couples automated electromyographic (“EMG”) and somatosensory evoked potential (“SSEP”) monitoring. SafeOp technology, as a result, is designed to uniquely beget real-time, surgeon-directed intra-operative information about both the location and the health of the patient’s nerves, enhancing the predictability and reproducibility of lateral approach outcomes.
 

Our Technology

Positioners

We have developed approach-specific patient positioning systems that integrate with our other access systems, providing for a more rigid construct and enhanced reproducibility. The PTP Patient Positioning System™, for example, was developed specifically for the PTP procedure as an adjunct to the Sigma™-PTP Access System. Designed to maximize the positional effects of having the patient in a prone position while streamlining operating room setup, PTP enables a single-position surgery. Key features include bi-lateral structural support to minimize patient movement, adjustable side paddle position to accommodate varying patient habitus, an integrated bed-rail system and compatibility with the Jackson frame. In addition, the system’s ultra-radiolucent carbon fiber frame is designed to help enhance fluoroscopic visibility and its coronal bending mechanism is designed to create reproducible access to L4-5 and upper lumbar regions.

Access Systems

We have differentiated surgical access instruments that are designed to maximize patient outcomes through enhanced visibility and rigidity, intuitive orthogonality, and approach-specific exposure. We offer several split-blade retractors which allow for direct, illuminated visualization and freedom of maneuverability within the operative corridor. Our retractors also provide for stable positioning by attaching directly to the surgical table. We also offer procedure-specific access systems, including our Sigma-ALIF Access System which allows for custom anterior abdominal exposure through freehand placement of dissecting blades and connection to a ringed frame. The Sigma-ALIF Access System provides an unobstructed working corridor with custom features to enable an ALIF approach in either supine or lateral decubitus.

EOS Imaging

Our EOS imaging system provides unbiased, high-quality, and calibrated full-body imaging that enables a precise 3D model of patients’ skeletal systems and provides valuable diagnostic and surgical planning capabilities. The integration of our approach-specific solutions into EOS’ 3D surgical planning platform is expected to better inform surgery and enhance the predictability of outcomes by allowing surgeons to more effectively assess patients’ full-body alignment, establish surgical objectives, and simulate surgery with optimized implants.

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Alpha InformatiX

Our Alpha InformatiX ("AIX") product platform comprises the SafeOp Neural InformatiX System and the VEA™ alignment mobile application.

The SafeOp Neural InformatiX System was the first advanced technology to launch from the AIX product platform. SafeOp is a patented technology that automates both EMG and SSEP monitoring. As a result, the system can provide surgeons with objective, real-time, and actionable information about both nerve location and nerve health intra-operatively on a small, easy-to-use tablet platform. Integration of the information with our advanced access, implant, and fixation technologies equips surgeons with procedural solutions designed to enhance safety, efficiency, and reproducibility.

The VEA mobile alignment application is designed to more quickly quantify alignment parameters on a mobile device. Further development is aimed at enabling broad EOS image access for the integration of intraoperative solutions.

Implants and Fixation Systems

Our portfolio of specialized spinal implants and fixation systems are designed to specifically meet the requirements of each approach. Available in varying shapes, sizes, and lordosis options, our spinal implants include implants made from allograft, PEEK, and porous titanium. We offer NanoTec™ surface modifications to our interbody systems to increase the surface area for cell adhesion and proliferation. Customization can be enhanced with our lordotic expandable intervertebral body fusion system, Calibrate™ PSX, which was released in 2022. We also offer several standalone implants designed to provide for height restoration and stabilization in one integrated solution.

Invictus™ is our next-generation comprehensive spinal fixation solution, designed to treat the range of pathologies, with intraoperative adaptability and surgical predictability through an open, minimally invasive (“MIS”), or hybrid approach. The sophistication of the Invictus Posterior Fixation System continues to expand. The commercial release of Invictus OCT in early 2021 extended the system’s proficiencies to include the occiput and cervical spine, creating a single system capable of addressing the entire spine from occiput to ilium with familiar and consistent instrument design, simplified screw insertion, and intraoperative adaptability. The launch of Invictus OsseoScrew® later in 2021 advanced the system with the first and only expandable screw commercially available in the U.S. OsseoScrew has been designed to optimize fixation and address fixation failure in compromised bone.

Biologics

We have a variety of biologics designed to facilitate the process of spinal fusion. Our biologics offerings consist of several allograft (donated human tissue) options, including 3D ProFuse® Osteoconductive Bioscaffold, and a family of AlphaGRAFT® products. 3D ProFuse® Osteoconductive Bioscaffold is highly compressible when hydrated, allowing for ease of handling and better endplate-to-endplate contact. Our AlphaGRAFT Demineralized Bone Matrix (“DBM”) consists of demineralized human tissue that is available in gel, putty, and fiber forms. AlphaGRAFT DBM Fibers combine the regenerative capacity of interconnected fibers with the maximum availability of growth factors endogenous to bone. Composed of 100% demineralized fibers, AlphaGRAFT DBM Fibers offer moldable, cohesive handling characteristics. AlphaGRAFT Cellular Bone Matrix (“CBM”) is a growth factor-enriched cellular bone matrix (“CBM”) that exhibits the angiogenic, osteoinductive, and mitogenic growth factors necessary for bone growth. AlphaGRAFT CBM may be delivered in granular, fiber, or structural form. We also offer BioCORE® Moldable Bioactive Graft which is a synthetic mineral-collagen composite matrix that can be molded to fit the bone defect. Our Amnioshield® Amniotic Tissue Barrier is an allograft for spinal surgical barrier applications. The composite amniotic membrane is intended to act as a biological barrier and provide an excellent dissection plane.

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Products and Technologies Under Development

Internally Developed Products and Technologies

We are expanding our portfolio of products and technologies to enhance clinical outcomes across multiple pathologies, regardless of a surgeon’s preferred surgical approach. We expect to launch 8-10 new products during 2023.

Research and Development

Our research and development team seeks to better meet the requirements of each surgical approach and design and release new products that increase our penetration of the U.S. spine market. We are focused on developing technology platforms and products that span the largest market segments addressing degenerative and deformity spine pathologies. We have transformed our development process by focusing our programs and leveraging integrated teams to reduce the time frame from product concept to market commercialization. We also collaborate with surgeon partners to design products that are intended to enhance the clinical experience, simplify surgical techniques, and reduce overall costs, while improving patient outcomes. Most of our product development efforts are fully integrated in a singular location, our Carlsbad headquarters, which allows us to bring products from concept to market rapidly responding to surgeon and patient needs. Our resources include a technology advancement cell for rapid prototyping, a cadaveric lab, and mechanical testing laboratory.

Sales and Marketing

We market and sell our products through a sales force consisting of dedicated and non-dedicated independent sales agents and dedicated employee direct sales representatives. We employ a team of area vice presidents, sales directors, and regional business managers, who are responsible for overseeing the sales channel process in their territories. Although surgeons in the U.S. typically make the ultimate decision to use our products, we generally invoice the hospital for the products that are used and pay commissions to the sales representative, or the sales agent based on payment received from the hospital. We compensate our direct sales employees through salaries and incentive bonuses based on performance measures.

We evaluate and select our distribution partners and sales employees based upon their expertise in selling spinal devices, reputation within the surgeon community, geographical coverage, and established sales network.

We market our products at various industry conferences, organized surgical training courses, and in industry trade journals and periodicals.

Surgeon Training and Education

We focus our surgeon training efforts on delivering critical technical skills needed to perform the entire spinal fusion procedure through a peer-to-peer approach for qualified surgeon customers. Well-timed surgeon education programs drive customer conversion and loyalty by focusing on delivering value through improved clinical outcomes. We devote significant resources to training and education and are committed to a culture of scientific excellence and ethics.

We believe that one of the most effective ways to introduce and build market demand for our products is by training and educating spine surgeons, independent sales agents, and direct sales representatives on the benefits and use of our products. Sales training programs are a platform for learning and organizational development, ensuring the sales force is clinically competitive and considered an essential resource to all stakeholders. We focus on cross-functional collaboration and alignment to deliver timely and relevant programs to meet surgeon and representative needs and positively impact the business.

Our training and education programs are designed to support new product introductions to the market as well as ongoing portfolio advancement. Our resources are nimble and responsive and include field-based engagements to supplement our core curriculum. We believe this is an effective way to increase overall surgeon adoption of our new products.

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We believe that surgeons, independent sales agents, and direct sales representatives will become exposed to the merits and distinguishing features of our products through our training and education programs, and that such exposure will increase the use and promotion of our products. With a focus on the entire procedure, we expect to build awareness of the breadth of our product offering. We are conscientious in the pursuit of delivering value to all stakeholders. Our goal is to provide surgeon education programs, coupled with a growing and comprehensive sales training platform that create a sustainable competitive advantage for our organization.

Manufacture and Supply

We rely on third-party suppliers for the manufacture of all our implants and instruments. Outsourcing implant manufacturing reduces our need for capital investment and reduces operational expense. Additionally, outsourcing provides expertise and capacity necessary to scale up or down based on demand for our products. We select our suppliers to ensure that all of our products are safe, effective, adhere to all applicable regulations, are of the highest quality, and meet our supply needs. We employ a rigorous supplier assessment, qualification, and selection process targeted to suppliers that meet the requirements of the FDA, and International Organization for Standardization (“ISO”), and quality standards supported by internal policies and procedures. Our quality assurance process monitors and maintains supplier performance through qualification and periodic supplier reviews and audits.

The raw materials used in the manufacture of our non-biologic products are principally titanium, titanium alloys, stainless steel, cobalt chrome, ceramic, allograft, and PEEK. With the exception of PEEK, none of our raw material requirements is limited to any significant extent by critical supply. We are subject to the risk that Invibio, one of a limited number of PEEK suppliers, will be unable to supply PEEK in adequate amounts and in a timely manner. We believe our supplier relationships, alternative product offerings, vendor-managed inventory, and quality processes will support our potential capacity needs for the foreseeable future.

With respect to biologics products, we are FDA-registered and licensed in the states of California, New York, and Florida, the only states that currently require licenses. Our facility and the facilities of the third-party suppliers we use are subject to periodic unannounced inspections by regulatory authorities and may undergo compliance inspections conducted by the FDA and corresponding state and foreign agencies. Because our biologics products are processed from human tissue, maintaining a steady supply can sometimes be challenging. We have not experienced significant difficulty in locating and obtaining the materials necessary to fulfill our production requirements and we have not experienced a meaningful disruption to sales orders.

Competition

Although we believe that our current broad product portfolio and development pipeline is differentiated and has numerous competitive advantages, the spinal implant industry is highly competitive, subject to rapid technological change, and significantly affected by new product introductions. We believe that the principal competitive factors in our market include:

•improved outcomes for spine pathology procedures

•ease of use, quality, and reliability of product portfolio

•effective and efficient sales, marketing, and distribution

•quality service and an educated and knowledgeable sales network

•technical leadership and superiority

•surgeon services, such as training and education

•responsiveness to the needs of surgeons

•acceptance by spine surgeons

•product price and qualification for reimbursement

•speed to market

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Both our currently marketed products and any future products we commercialize are subject to intense competition. We believe that our most significant competitors are Medtronic (Sofamor Danek), Johnson & Johnson (DePuy Spine), Stryker, NuVasive, Zimmer Biomet, Globus Medical, and others, many of which have substantially greater financial resources than we do. In addition, these companies may have more established distribution networks, entrenched relationships with physicians and greater experience in developing, launching, marketing, distributing, and selling spinal implant products.

Some of our competitors also provide non-operative therapies for spine disorder conditions. While these non-operative treatments are considered to be an alternative to surgery, surgery is typically performed in the event that non-operative treatments are unsuccessful. We believe that, to date, these non-operative treatments have not caused a material reduction in the demand for surgical treatment of spinal disorders.

Intellectual Property

We rely on a combination of patent, trademark, copyright, trade secret and other intellectual property laws, nondisclosure agreements, proprietary information ownership agreements, and other measures to protect our intellectual property rights. We believe that in order to have a competitive advantage, we must develop, maintain, and enforce the proprietary aspects of our technologies. We require our employees, consultants, co-developers, sales agents and advisors to execute agreements governing the ownership of proprietary information and use and disclosure of confidential information in connection with their relationship with us. In general, these agreements require these individuals and entities to agree to disclose and assign to us all inventions that were conceived on our behalf, or which relate to our property or business and to keep our confidential information confidential and only use such confidential information in connection with our business.

Patents. As of December 31, 2022, we and our affiliates owned, or we exclusively owned 196 issued U.S. patents, 39 pending U.S. patent applications and 234 issued or pending foreign patents. We own multiple patents relating to unique aspects and improvements for several of our products. Patents for individual products extend for varying periods according to the date of filing or grant and legal term of patents in various countries where a patent is issued. We do not believe that the expiration of any single patent is likely to significantly affect our intellectual property position.

Trademarks. As of December 31, 2022, we and our affiliates owned 26 registered U.S. trademarks and 19 registered trademarks outside of the U.S.

Government Regulation

Our products are subject to extensive regulation by the FDA and other U.S. federal and state regulatory bodies and comparable authorities in other countries. Our products are subject to regulation under the Federal Food, Drug and Cosmetic Act (“FDCA”), and in the case of our tissue products, also under the Public Health Service Act (“PHSA”). To ensure that our products are safe and effective for their intended use, the FDA regulates, among other things, the following activities that we or our partners perform and will continue to perform:

•product design and development;

•product testing;

•non-clinical and clinical research;

•product manufacturing;

•product labeling;

•product storage;

•premarket clearance or approval;

•advertising and promotion;

•product marketing, sales and distribution;

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•import and export; and

•post-market surveillance, including reporting deaths or serious injuries related to products and certain product malfunctions.

Government Regulation—Medical Devices

FDA’s Premarket Clearance and Approval Requirements. Unless an exemption applies, each medical device we wish to commercially distribute in the U.S. will require either FDA clearance of a premarket notification requesting permission for commercial distribution under Section 510(k) of the FDCA, also referred to as a 510(k) clearance, or approval of a premarket approval application, (“PMA”). The information that must be submitted to the FDA in order to obtain clearance or approval to market a new medical device varies depending on how the medical device is classified by the FDA. Under the FDCA medical devices are classified into one of three classes - Class I, Class II or Class III-depending on the degree of risk associated with the use of the device and the extent of manufacturer and regulatory controls deemed to be necessary by the FDA to reasonably ensure their safety and effectiveness.

Class I devices are those with the lowest risk to the patient for which safety and effectiveness can be reasonably assured by adherence to a set of regulations, referred to as General Controls, which require compliance with the applicable portions of the FDA’s Quality System Regulation (“QSR”), facility registration and product listing, reporting of adverse events and malfunctions, and appropriate, truthful and non-misleading labeling and promotional materials. Some Class I devices also require 510(k) clearance by the FDA, though most Class I devices are exempt from the premarket notification requirements. Class II devices are those that are subject to the General Controls, as well as Special Controls, which can include performance standards, product-specific guidance documents and post-market surveillance. Manufacturers of most Class II devices are required to submit to the FDA a premarket notification under Section 510(k) of the FDCA. Class III devices include devices deemed by the FDA to pose the greatest risk such as life-supporting or life-sustaining devices, or implantable devices, in addition to those deemed not substantially equivalent following the 510(k) process. The safety and effectiveness of Class III devices cannot be reasonably assured solely by compliance with the General Controls and Special Controls described above. Therefore, these devices must be the subject of an approved PMA. Both 510(k)s and PMAs are subject to the payment of user fees at the time of submission for FDA review.

If the FDA determines that the device is not “substantially equivalent” to a predicate device following submission and review of a 510(k) premarket notification, or if the manufacturer is unable to identify an appropriate predicate device and the new device or new use of the device presents a moderate or low risk, the device sponsor may either pursue a PMA approval or seek reclassification of the device through the de novo process. Our current products on the market in the U.S. include Class II spinal implants and instruments marketed under 510(k) premarket clearance, as well as Class I 510(k) exempt spinal instruments and devices.

510(k) Clearance Pathway. To obtain 510(k) clearance, we must submit a premarket notification demonstrating that the proposed device is substantially equivalent to a device legally marketed in the U.S. A predicate device is a legally marketed device that is not subject to premarket approval, i.e., a device that was legally marketed prior to May 28, 1976 (pre-amendments device) and for which a PMA is not required, a device that has been reclassified from Class III to Class II or I, or a device that was found substantially equivalent through the 510(k) process. To be “substantially equivalent,” the proposed device must have the same intended use as the predicate device, and either have the same technological characteristics as the predicate device or have different technological characteristics and not raise different questions of safety or effectiveness than the predicate device. Clinical data is sometimes required to support substantial equivalence.

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The FDA’s goal is to review and act on each 510(k) within 90 days of submission, but on average the process usually takes approximately six months. It may take less time depending on the type of device and it may take longer if the FDA requests additional information. Most 510(k)s do not require supporting data from clinical trials, but the FDA may request such data. If the FDA agrees that the device is substantially equivalent, it will grant clearance to commercially market the device.

After a device receives 510(k) clearance, any modification that could significantly affect its safety or effectiveness, or that would constitute a new or major change in its intended use, will require a new 510(k) clearance or, depending on the modification, require premarket approval. The FDA requires each manufacturer to determine whether the proposed change requires the submission of a 510(k) or PMA, but the FDA can review any such decision and can disagree with a manufacturer’s determination. If the FDA disagrees with a manufacturer’s determination, the FDA can require the manufacturer to cease marketing and/or recall the modified device until 510(k) clearance or PMA is obtained. If the FDA requires us to seek a new 510(k) clearance or PMA for any modifications to a previously cleared product, we may be required to cease marketing or recall the modified device until we obtain this clearance or approval. Also, in these circumstances, we may be subject to significant fines or penalties. We have made and plan to continue to make enhancements to our products for which we have not submitted 510(k)s or PMAs, and we will consider on a case-by-case basis whether a new 510(k) or PMA is necessary.

The FDA began to consider proposals to reform its 510(k) marketing clearance process in 2011, and such proposals could include increased requirements for clinical data and a longer review period. Specifically, in response to industry and healthcare provider concerns regarding the predictability, consistency and rigor of the 510(k) regulatory pathway, the FDA initiated an evaluation of the 510(k) program, and as part of the Food and Drug Administration Safety and Innovation Act (“FDASIA”), Congress reauthorized the Medical Device User Fee Amendments with various FDA performance goal commitments and enacted several “Medical Device Regulatory Improvements” and miscellaneous reforms, which are further intended to clarify and improve medical device regulation both pre- and post-clearance and approval. Further, in December 2016, the 21st Century Cures Act (“Cures Act”) was signed into law. The Cures Act, among other things, is intended to modernize the regulation of devices and spur innovation but its ultimate implementation is unclear.

Premarket Approval Pathway. Class III devices require PMA approval before they can be marketed, although some pre-amendment Class III devices for which the FDA has not yet required a PMA are cleared through the 510(k) process. The PMA process is generally more complex, costly and time consuming than the 510(k) process. A PMA must be supported by extensive data including, but not limited to, extensive technical information regarding device design and development, preclinical and clinical trials, manufacturing, and labeling information to demonstrate to the FDA’s satisfaction the safety and effectiveness of the device for its intended use. The PMA application must provide valid scientific evidence that demonstrates to the FDA’s satisfaction reasonable assurance of the safety and effectiveness of the device for its intended use. Following receipt of a PMA, the FDA determines whether the application is sufficiently complete to permit a substantive review. If the FDA accepts the application for review, it has 180 days under the FDCA to complete its review of the PMA, although in practice, the FDA’s review often takes significantly longer, and can take up to several years. During this review period, the FDA may request additional information or clarification of information already provided, and the FDA may issue a major deficiency letter to the applicant, requesting the applicant’s response to deficiencies communicated by the FDA. Also, during the review period, an advisory panel of experts from outside the FDA may be convened to review and evaluate the application and provide recommendations to the FDA as to the approvability of the device. The FDA may or may not accept the panel’s recommendation. In addition, the FDA will conduct a preapproval inspection of the manufacturing facility to ensure compliance with quality system regulation ("QSR"). The PMA process can be expensive, uncertain, and lengthy, and a number of devices for which FDA approval has been sought by other companies have never been approved by the FDA for marketing.

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Clinical Trials. Clinical trials are almost always required to support a PMA and are sometimes required for a 510(k). All clinical investigations of investigational devices to determine safety and effectiveness must be conducted in accordance with the FDA’s investigational device exemption (“IDE”), regulations which govern investigational device labeling, prohibit promotion of the investigational device, and specify an array of recordkeeping, reporting, and monitoring responsibilities of study sponsors and study investigators. If the device is determined to present a “significant risk” to human health, the manufacturer may not begin a clinical trial until it submits an IDE application to the FDA and obtains approval of the IDE from the FDA. The IDE must be supported by appropriate data, such as animal and laboratory testing results, showing that it is safe to test the device in humans and that the testing protocol is scientifically sound. In addition, the study must be approved by, and conducted under the oversight of, an Institutional Review Board (“IRB”), for each clinical site. The IRB is responsible for the initial and continuing review of the IDE and may pose additional requirements for the conduct of the study. If an IDE application is approved by the FDA and one or more IRBs, human clinical trials may begin at a specific number of investigational sites with a specific number of patients, as approved by the FDA. If the device presents a non-significant risk to the patient, a sponsor may begin the clinical trial after obtaining approval for the trial by one or more IRBs without separate approval from the FDA, but must still follow abbreviated IDE requirements, such as monitoring the investigation, ensuring that the investigators obtain informed consent, and labeling and record-keeping requirements. A clinical trial may be suspended by FDA, the sponsor, or an IRB at any time for various reasons, including a belief that the risks to the study participants outweigh the benefits of participation in the trial. Even if a clinical trial is completed, the results may not demonstrate the safety and efficacy of a device to the satisfaction of the FDA or may be equivocal or otherwise not be sufficient to obtain approval of a device. We are not currently undertaking any FDA IDE trials, as all of our existing products are FDA-cleared through the 510(k) pathway. It is possible, however, that future device development may require IDE clinical trial for approval.

Pervasive and Continuing FDA Regulation. After a device is placed on the market, numerous FDA and other regulatory requirements continue to apply. These include:

•registration and listing requirements, which require manufacturers to register all manufacturing facilities and list all medical devices placed into commercial distribution;

•the QSR, which requires manufacturers, including third-party contract manufacturers, to follow stringent design, testing, control, supplier/contractor selection, documentation, record maintenance and other quality assurance controls, during all aspects of the manufacturing process and to maintain and investigate complaints;

•labeling regulations and unique device identification requirements;

•advertising and promotion requirements;

•restrictions on sale, distribution, or use of a device;

•FDA prohibitions against the promotion of products for uncleared or unapproved (“off-label”) uses;

•medical device reporting obligations, which require that manufacturers submit reports to the FDA of device may have caused or contributed to a death or serious injury or malfunctioned in a way that would likely cause or contribute to a death or serious injury if it were to reoccur;

•medical device correction and removal reporting regulations, which require that manufacturers report to the FDA field corrections and product recalls or removals if undertaken to reduce a risk to health posed by the device or to remedy a violation of the FDCA that may present a risk to health;

•device tracking requirements; and

•other post-market surveillance requirements, which apply when necessary to protect the public health or to provide additional safety and effectiveness data for the device.

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Failure to comply with applicable regulatory requirements can result in enforcement action by the FDA, which may include any of the following:

•warning letters and untitled letters;

•fines, injunctions, consent decrees, and civil penalties;

•recalls, withdrawals, administrative detention, or seizure of products;

•operating restrictions, partial suspension, or total shutdown of production;

•withdrawals of 510(k) clearances or PMA approvals that have already been granted;

•refusal to grant 510(k) clearance or PMA approvals of new products; and/or

•criminal prosecution.

Our facilities, records and manufacturing processes are subject to periodic announced and unannounced inspections by the FDA to evaluate compliance with applicable regulatory requirements.

Regulation of Human Cells, Tissues, and Cellular and Tissue-based Products. Certain of our products are regulated as human cells, tissues, and cellular and tissue-based products (“HCT/Ps”). Section 361 of the PHSA authorizes the FDA to issue regulations to prevent the introduction, transmission or spread of communicable disease. HCT/Ps regulated as “361” HCT/Ps are subject to requirements relating to registering facilities and listing products with the FDA, screening and testing for tissue donor eligibility, or Good Tissue Practice, when processing, storing, labeling, and distributing HCT/Ps, including required labeling information, stringent record keeping, and adverse event reporting, among other applicable requirements and laws. If the HCT/P is minimally manipulated, is intended for homologous use only and meets other requirements, the HCT/P will not require 510(k) clearance, PMA approval, a Biologics License Applications, or other premarket authorization from the FDA before marketing.

Environmental Matters

Our facilities and operations are subject to extensive federal, state, and local environmental and occupational health and safety laws and regulations. These laws and regulations govern, among other things, air emissions; wastewater discharges; the generation, storage, handling, use and transportation of hazardous materials; the handling and disposal of hazardous wastes; the cleanup of contamination; and the health and safety of our employees. Under such laws and regulations, we are required to obtain permits from governmental authorities for some of our operations. If we violate or fail to comply with these laws, regulations or permits, we could be fined or otherwise sanctioned by regulators. We could also be held responsible for costs and damages arising from any contamination at our past or present facilities or at third-party waste disposal sites. We cannot completely eliminate the risk of contamination or injury resulting from hazardous materials, and we may incur material liability as a result of any contamination or injury.

Compliance with Certain Applicable Statutes

We are subject to various federal and state laws pertaining to healthcare fraud and abuse, including anti-kickback laws, false claims laws, criminal health care fraud laws, physician payment transparency laws, data privacy and security laws, and foreign corrupt practice laws. Violations of these laws are punishable by criminal and/or civil sanctions, including, in some instances, fines, imprisonment and, within the U.S., exclusion from participation in government healthcare programs, including Medicare, Medicaid and Veterans Administration health programs. These laws are administered by, among others, the U.S. Department of Justice, the Office of Inspector General of the Department of Health and Human Services and state attorneys general. Many of these agencies have increased their enforcement activities with respect to medical device manufacturers in recent years.

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The federal Anti-Kickback Statute prohibits persons from knowingly and willfully soliciting, offering, receiving, or providing remuneration, directly or indirectly, in exchange for or to induce either the referral of an individual, or the furnishing, arranging for or recommending a good or service, for which payment may be made in whole or part under federal healthcare programs, such as the Medicare and Medicaid programs. The Anti-Kickback Statute is broad and prohibits many arrangements and practices that are lawful in businesses outside of the healthcare industry. For example, the definition of “remuneration” has been broadly interpreted to include anything of value, including, gifts, discounts, the furnishing of supplies or equipment, credit arrangements, payments of cash, waivers of payments, ownership interests and providing anything at less than its fair market value. In addition, among other things, the Patient Protection and Affordable Health Care Act, as amended by the Health Care and Education Reconciliation Act (collectively referred to as “ACA”), amends the intent requirement of the federal Anti-Kickback Statute. Pursuant to the ACA, a person or entity no longer needs to have actual knowledge of the Anti-Kickback Statute or specific intent to violate it. Furthermore, the ACA provides that the government may assert that a claim including items or services resulting from a violation of the Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the federal False Claims Act.

In implementing the Anti-Kickback Statute, the Department of Health and Human Services Office of Inspector General (“OIG”), has issued a series of regulations, known as the safe harbors, which began in July 1991. These safe harbors set forth provisions that, in circumstances where all the applicable requirements are met, will assure healthcare providers and other parties that they will not be prosecuted under the Anti-Kickback Statute. The failure of a transaction or arrangement to fit precisely within one or more safe harbors does not necessarily mean that it is illegal or that prosecution will be pursued. However, conduct and business arrangements that do not fully satisfy all requirements of an applicable safe harbor may result in increased scrutiny by government enforcement authorities such as the OIG. Penalties for violations of the Anti-Kickback Statute include criminal penalties and civil sanctions such as fines, imprisonment and possible exclusion from Medicare, Medicaid and other federal healthcare programs. Many states have anti-kickback laws that are similar to the federal law, some of which apply to the referral of patients for healthcare items or services reimbursed by any source, and may also result in penalties, fines, sanctions for violations, and exclusions from state or commercial programs.

We have entered into various agreements with certain surgeons that perform services for us, including some who make clinical decisions to use our products. Some of our referring surgeons own our stock, which they may have received from us as consideration for services performed. We frequently review these arrangements to determine whether they are in compliance with applicable laws and regulations. In addition, physician-owned distribution companies (“PODs”) have become decreasingly involved in the sale and distribution of medical devices, including products for the surgical treatment of spine disorders. In many cases, these distribution companies enter into arrangements with hospitals that bill Medicare or Medicaid for the furnishing of medical services, and the physician-owners are among the physicians who refer patients to the hospitals for surgery. On March 26, 2013, the OIG issued a Special Fraud Alert entitled “Physician-Owned Entities,” (the “Fraud Alert”), in which the OIG concluded, among other things, that PODs are “inherently suspect under the anti-kickback statute” and that PODs present “substantial fraud and abuse risk and pose dangers of patient safety.” Since 2013, the OIG has further increased its scrutiny of PODs and the Department of Justice has brought several high-profile cases against physician owners.

The federal False Claims Act prohibits persons from knowingly filing or causing to be filed a false or fraudulent claim to, or the knowing use of false statements to obtain payment from, the federal government. Private suits filed under the False Claims Act, known as qui tam actions, can be brought by individuals on behalf of the government. These individuals, sometimes known as “relators” or, more commonly, as “whistleblowers,” may share in any amounts paid by the entity to the government in fines or settlement. The number of filings of qui tam actions has increased significantly in recent years, causing more healthcare companies to have to defend a False Claim Act action. If an entity is determined to have violated the federal False Claims Act, it may be required to pay up to three times the actual damages sustained by the government, plus civil penalties of between $12,537 and $25,076 for each separate false claim and may be subject to exclusion from Medicare, Medicaid, and other federal healthcare programs. Various states have also enacted similar laws modeled after the federal False Claims Act which apply to items and services reimbursed under Medicaid and other state programs, or, in several states, apply regardless of the payor.

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The Health Insurance Portability and Accountability Act (“HIPAA”) created two new federal crimes: healthcare fraud and false statements relating to healthcare matters. The healthcare fraud statute prohibits knowingly and willfully executing a scheme to defraud any healthcare benefit program, including private payors. The ACA changed the intent requirement of the healthcare fraud statute to such that a person or entity no longer needs to have actual knowledge of this statute or specific intent to violate it. A violation of this statute is a felony and may result in fines, imprisonment or possible exclusion from Medicare, Medicaid, and other federal healthcare programs. The false statements statute prohibits knowingly and willfully falsifying, concealing, or covering up a material fact or making any materially false, fictitious, or fraudulent statement in connection with the delivery of or payment for healthcare benefits, items, or services. A violation of this statute is a felony and may result in similar sanctions.

ACA also includes various provisions designed to significantly strengthen fraud and abuse enforcement in addition to those changes discussed above. Among these additional provisions include increased funding for enforcement efforts and new “sunshine” provisions to require us to report and disclose to the Centers for Medicare and Medicaid Services (“CMS”), any payment or “transfer of value” made or distributed to physicians or teaching hospitals. These sunshine provisions also require certain group purchasing organizations, including physician-owned distributors, to disclose physician ownership information to CMS. We and other device manufacturers are required to collect and annually report specific data on payments and other transfers of value to physicians and teaching hospitals. There are various state laws and initiatives that require device manufacturers to disclose to the appropriate regulatory agency certain payments or other transfers of value made to physicians, and in certain cases prohibit some forms of these payments, with the risk of fines for any violation of such requirements.

HIPAA also includes privacy and security provisions designed to regulate the use and disclosure of “protected health information” (“PHI”), which is health information that identifies a patient and that is held by a health care provider, a health plan or health care clearinghouse. We are not directly regulated by HIPAA, but our ability to access PHI for purposes such as marketing, product development, clinical research or other uses is controlled by HIPAA and restrictions placed on health care providers and other covered entities. HIPAA was amended in 2009 by the Health Information Technology for Economic and Clinical Health Act (“HITECH”) which strengthened the rule, increased penalties for violations, and added a requirement for the disclosure of breaches to affected individuals, the government, and in some cases the media. We must carefully structure any transaction involving PHI to avoid violation of HIPAA and HITECH requirements.

Almost all states have adopted data security laws protecting personal information including social security numbers, state issued identification numbers, credit card or financial account information coupled with individuals’ names or initials. We must comply with all applicable state data security laws, even though they vary extensively, and must ensure that any breaches or accidental disclosures of personal information are promptly reported to affected individuals and responsible government entities. We must also ensure that we maintain compliant, written information security programs or run the risk of civil or even criminal sanctions for non-compliance as well as reputational harm for publicly reported breaches or violations.

If any of our operations are found to have violated or be in violation of any of the laws described above and other applicable state and federal fraud and abuse laws, we may be subject to penalties, among them being civil and criminal penalties, damages, fines, exclusion from government healthcare programs, and the curtailment or restructuring of our operations.

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Third-Party Reimbursement

In the U.S., healthcare providers generally rely on third-party payors, principally private insurers, and governmental payors such as Medicare and Medicaid, to cover and pay for all or part of the cost of a spine surgery in which our medical devices are used. We expect that sales volumes and prices of our products will depend in large part on the continued availability of reimbursement from such third-party payors. These third-party payors may deny reimbursement if they determine that a device used in a procedure was not medically necessary in accordance with cost-effective treatment methods, as determined by the third-party payor, or was used for an unapproved indication. Particularly in the U.S., third-party payors continue to carefully review, and increasingly challenge, the prices charged for procedures and medical products. Medicare coverage and reimbursement policies are developed by CMS, the federal agency responsible for administering the Medicare program, and its contractors. CMS establishes these Medicare policies for medical products and procedures and such policies are periodically reviewed and updated. While private payors vary in their coverage and payment policies, the Medicare program is viewed as a benchmark. Medicare payment rates for the same or similar procedures vary due to geographic location, nature of the facility in which the procedure is performed (i.e., teaching or community hospital) and other factors. We cannot provide assurance that government or private third-party payors will cover and provide adequate payment for the procedures in which our products are used. ACA and other reform proposals contain significant changes regarding Medicare, Medicaid, and other third-party payors.

In addition, other legislative changes have been proposed and adopted since the ACA was enacted. These changes include the Budget Control Act of 2011, which resulted in reductions to Medicare payments to providers of 2% per fiscal year, which went into effect on April 1, 2013 and will stay in effect through 2025 unless additional Congressional action is taken, as well as, the American Taxpayer Relief Act of 2012, which, among other things, further reduced Medicare payments to several types of providers, including hospitals and imaging centers, and increased the statute of limitations period for the government to recover overpayments to providers from three to five years. An expansion in government’s role in the U.S. healthcare industry may lower reimbursements for procedures using our products, reduce medical procedure volumes, and adversely affect our business and results of operations, possibly materially.

We believe that the overall escalating cost of medical products and services has led to, and will continue to lead to, increased pressures on the healthcare industry to reduce the costs of products and services. We cannot assure that government or private third-party payors will cover and provide adequate payment for the procedures using our products. In addition, it is possible that future legislation, regulation, or reimbursement policies of third-party payors will adversely affect the demand for procedures using our products or our ability to sell our products on a profitable basis. The unavailability or inadequacy of third-party payor coverage or reimbursement could have a significant adverse effect on our business, operating results, and financial condition.

Human Capital

As of December 31, 2022, we had 705 employees worldwide. Approximately 518 employees were located in the U.S. and 187 employees were located outside of the U.S. Of our U.S. employees, 347 were based in our Carlsbad, CA headquarters, covering all of the following functional areas: sales, customer service, marketing, clinical education, advanced manufacturing, quality assurance, regulatory affairs, research and development, human resources, finance, legal, information technology, and administration.

Our workforce is highly educated and diverse, which we believe is important for our continued success as a leading innovator in the medical device market. We employ a number of strategies to best enable us to attract, retain, and engage our team members. To build a steady and diverse pipeline of talent, we have a robust recruiting program, which is focused on attracting and retaining the talent we believe is necessary to help achieve our strategy and mission. Further, we employ recruiting processes that mitigate unconscious biases and promote diverse candidate pools. Our employee base is comprised of men, women, underrepresented individuals, individuals with disabilities, and protected veterans.

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To attract and retain employees, we offer competitive, performance-based compensation and benefits, opportunities for discounted equity ownership, employee recognition programs, career development opportunities, and access to continual growth through in-house live trainings, as well as support and reimbursement for external trainings and educational programs. In addition, to further expand employee enrichment and engagement, we periodically survey our employees regarding their satisfaction levels. We use these survey results to determine how we can continue to create work environments that energize our employees and enable them to develop and maintain a positive working culture. We completed a survey in December 2022, in which over 90% of respondents indicated a willingness to recommend the Company to friends and family as a desirable place to work. High employee satisfaction is also reflected in our high employee engagement and low undesired turnover, which was approximately 6% for 2022.

We have never experienced a work stoppage due to labor difficulties and believe that our relations with our employees are good. We currently have no employees working under collective bargaining agreements.

Health and Wellness

We offer various health and wellness programs to promote a healthy and active lifestyle for our employees. In addition to our health and wellness program offerings, our corporate headquarters includes indoor and outdoor workout spaces, which our employees are able to access throughout the day, as well as various fitness and workout classes. We have provided health and wellness initiatives throughout the year to promote the continued wellbeing of our employees, as well as opportunities for our employees to participate in community volunteer and clean-up programs to foster camaraderie within our employee base.

Corporate and Available Information

We are a Delaware corporation incorporated in March 2005. Our principal executive office is located at 1950 Camino Vida Roble, Carlsbad, California 92008 and our telephone number is (760) 431-9286. Our Internet address is www.atecspine.com. We are not including the information contained on our website as a part of, or incorporating it by reference into, this Annual Report on Form 10-K.

We file our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and all amendments to those reports, electronically with the Securities and Exchange Commission ("SEC"). We make these reports available to you free of charge through the Investor Relations section of our website as soon as reasonably practicable after such materials have been electronically filed with, or furnished to, the SEC. The public can also obtain any documents that we file with the SEC at http://www.sec.gov.

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Item 1A. Risk Factors

Investing in our common stock involves a high degree of risk. You should carefully consider the following risk factors and all other information contained or incorporated by reference in this Annual Report on Form 10-K. The risks and uncertainties described below are not the only risks faced by the Company. Additional risks and uncertainties that we are unaware of, or that we currently deem immaterial may become important factors that affect us. If any of such risks or the risks described below occur, either alone or taken together occur, our business, financial condition or results of operations could be materially and adversely affected. In that case, the trading price of our common stock could decline, and you may lose some or all of your investment.

Risks Related to Our Business and Industry

Our business plan relies on certain assumptions pertaining to the market for our products that, if incorrect, may adversely affect our growth and profitability.

We allocate resources based on assumptions about trends in the development of and treatment for spine disorders and the resulting demand for our products. Our assumptions may not be accurate. Increasing awareness and use of non-invasive treatments and other shifts in technologies and treatments, emergence of new materials and acceptance of emerging technologies and procedures could adversely affect demand for our products. If our assumptions prove to be incorrect or if alternative treatments to those we offer gain further acceptance, then demand for our products could be significantly less than we anticipate and we may not be able to achieve or sustain growth or profitability.

We operate in a highly competitive market segment, face competition from large, well-established medical device companies with significant resources, and may not be able to compete effectively.

The market in which we operate is highly competitive, subject to rapid technological change and affected by new products and market activities of industry participants. Our competitors include numerous large and well-capitalized companies such as Medtronic Sofamor Danek, a subsidiary of Medtronic; Depuy Spine, a subsidiary of Johnson & Johnson; Stryker; NuVasive; Zimmer Biomet; and Globus Medical. Several of our competitors enjoy competitive advantages over us, including:

•more established relationships with healthcare providers, distribution networks and healthcare payers;

•broader product offerings and intellectual property portfolios, better name recognition, and more recognizable product trademarks;

•greater resources for product research and development, clinical data, patent litigation, and launching, marketing, distributing and selling our products; and

•greater experience in obtaining and maintaining FDA and other regulatory clearances or approvals for products and product enhancements.

In addition, at any time our current competitors or new industry participants may develop alternative treatments, products or procedures for the treatment of spine disorders that compete directly or indirectly with our products, including ones that may be superior to our spine surgery products. For these reasons, we may not be able to compete successfully against our existing or potential competitors. Any such failure could lead us to further modify our strategy, lower our prices, increase our sales commissions and could have a significant adverse effect on our business, financial condition and results of operations.

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A significant percentage of our revenues are derived from sales of our systems that include polyaxial pedicle screws.

Net sales of our systems that include polyaxial pedicle screws represented approximately 42% and 47% our net sales for the years ended December 31, 2022 and 2021, respectively, and are expected to continue to be significant in the future. A decline in sales of these systems for any reason would have a significant adverse impact on our business, financial condition and results of operations. We rely on third-party licenses related to our polyaxial pedicle screw systems in order to use various proprietary technologies that are material to these systems, including the enforceability of the intellectual property rights in such technologies. Certain of our licenses may be terminated upon specific conditions. Our rights under each of the licenses are subject to our continued compliance with the terms of the license, including certain diligence, disclosure and confidentiality obligations and the payment of royalties and other fees. Because of the complexity of our product and the patents we have licensed, determining the scope of the license and related obligations can be difficult and can lead to disputes between us and the licensor. An unfavorable resolution of such a dispute could lead to an increase in the royalties payable pursuant to the license or termination of the license. Any action that would prevent us from manufacturing, marketing and selling these systems or increase the costs associated with these systems would have a significant adverse effect on our business, financial condition and results of operations.

Our reliance on sales agents could affect our ability to market our products efficiently and profitably.

The development of a large distribution network may be expensive and time consuming. Because of the intense competition for their services, we may be unable to recruit or retain qualified independent sales agents. Like us, some of our competitors enter into exclusive distribution agreements. Further, we may not be able to enter into agreements with independent sales agents on commercially reasonable terms. Even if we do enter into agreements with new independent sales agents, it may take 90 to 120 days or even longer for new sales agents to reach full operational effectiveness. Some sales agents may not generate revenue as quickly as we expect, may not commit the necessary resources to effectively market and sell our products and may not ultimately be successful in selling our products. Our business, financial condition and results of operations will be materially adversely affected if we do not attract and retain new sales agents or if the marketing and sales efforts of our sales agents are unsuccessful.

To be commercially successful, we must convince the spine surgeon community that our products are an attractive alternative to competitive products.

In order for us to sell our products, spine surgeons must be convinced that our products are superior to competing products. Acceptance of our products depends on educating the spine surgeon community as to the distinctive characteristics, perceived benefits, safety and cost-effectiveness of our products compared to competitive products and on training spine surgeons in the proper application of our products. If we are not successful in convincing the spine surgeon community of the merit of our products, our sales will decline, and we will be unable to increase or achieve and sustain growth or profitability. Additionally, if surgeons are not properly trained, they may misuse or ineffectively use our products, which may result in unsatisfactory patient outcomes, patient injury, negative publicity or lawsuits against us, any of which could have a significant adverse effect on our business, financial condition and results of operations.

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We rely on a limited number of third parties to manufacture and supply our products. Any problems experienced by these manufacturers could result in a delay or interruption in the supply of our products until such manufacturer cures the problem or until we locate and qualify an alternative source of supply.

We rely on third party manufacturers of our implants, instruments, imaging equipment and spare parts. We currently rely on a limited number of third parties and any prolonged disruption in the operations of our third-party suppliers could have a negative impact on our ability to supply products to customers. We may suffer losses as a result of business interruptions that exceed coverage under our manufacturer’s insurance policies. Other events beyond our control could also disrupt our product development and commercialization efforts until such events can be resolved or we can put in place third-party contract manufacturers to assume this manufacturing role. In addition, if we are required to change manufacturers for any reason, we will be required to verify that the new manufacturer maintains facilities and procedures that comply with quality standards and with all applicable regulations and guidelines. Delays associated with the verification of a new manufacturer or the re-verification of an existing manufacturer could negatively affect our ability to develop products or supply products to customers in a timely manner. Any disruption in the manufacture of our products by our third-party suppliers could have a material adverse impact on our business, financial condition and results of operations.

We depend on third-party suppliers, and in one case a single supplier, for key raw materials and the loss of any of these third-party suppliers, or their inability to supply us with adequate raw materials, could harm our business.

We rely on a number of suppliers and in one case on a single source vendor, Invibio, to provide the raw materials used in the production of our products. We have a supply agreement with Invibio, pursuant to which it supplies us with PEEK, a biocompatible plastic that we use in some of our spacers. Invibio is one of a limited number of companies approved to distribute PEEK in the U.S. for use in implantable devices. We depend on a limited number of sources of human tissue for use in our biologics products. Our supply of human tissue from our current suppliers and our current inventory of biologics products may not be available at current levels or may not be sufficient to meet our needs. Our dependence on a single third-party PEEK supplier and the challenges we may face in obtaining adequate supplies of biologics products involve several risks, including limited control over pricing, availability, quality and delivery schedules. Any supply interruption in a limited or sole sourced component or raw material could materially harm our ability to source manufactured products until a new source of supply could be found. We may be unable to find a sufficient alternative supply channel in a reasonable time period or on commercially reasonable terms, if at all, which would have a significant adverse effect on our business, financial condition and results of operations.

If we or our suppliers fail to comply with applicable regulations, the manufacture of our products could be delayed.

We and our suppliers are subject to extensive regulation by the FDA and other regulatory agencies both inside and outside of the U.S. The FDA, and other regulatory agencies, audit compliance with some of these regulations. If significant non-compliance issues arise or if a corrective action plan is not sufficient, the manufacture or sale of our products may be limited until such problems are corrected to the regulatory body’s satisfaction, which could have a material adverse effect on our business, financial condition and results of operations. Further, our products could be subject to recall if the regulatory body determines, for any reason, that our products are not safe or effective. Any recall or additional regulatory approval or clearance requirements could result in delays, costs associated with modification of a product, loss of revenue and potential operating restrictions imposed by the regulatory body, all of which could have a material adverse effect on our business, financial condition and results of operations.

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Demand for our products, and prices at which customers and patients are willing to pay for our products depend upon the ability of our customers to obtain adequate third-party coverage and reimbursement product purchases.

Sales of our products depend in part on the availability of adequate coverage and reimbursement from third-party payers, principally Medicare, Medicaid and private health insurance plans, to pay for all or a portion of the costs and fees associated with the use of our products. While procedures using our currently marketed products are eligible for reimbursement in the U.S., if surgical procedures utilizing our products are performed on an outpatient basis, it is possible that private payers may no longer provide reimbursement for the procedures using our products without further supporting data on the procedure. Any delays in obtaining, or an inability to obtain, adequate coverage or reimbursement for procedures using our products could significantly affect the acceptance of our products and have a significant adverse effect on our business. Additionally, third-party payers continue to review their coverage policies carefully for existing and new therapies and can, without notice, deny coverage for treatments that include the use of our products. Our business would be negatively impacted if there are any changes that reduce reimbursement for our products.

Operation of our business internationally is subject to our continued compliance with the laws and regulations of each country in which we operate, as well as the business and legal customs in those jurisdictions and geographies.

Our operations, both inside and outside the U.S., are subject to risks inherent in conducting business globally and under the laws, regulations and customs of various jurisdictions and geographies. Our operations outside the U.S. are subject to special risks and restrictions, including, without limitation: fluctuations in currency values and foreign-currency exchange rates; exchange control regulations; changes in local political or economic conditions; governmental pricing directives; import and trade restrictions; import or export licensing requirements and trade policy; restrictions on the ability to repatriate funds; and other potentially detrimental domestic and foreign governmental practices or policies affecting U.S. companies doing business abroad, including the U.S. Foreign Corrupt Practices Act and the trade sanctions laws and regulations administered by the U.S. Department of the Treasury’s Office of Foreign Assets Control. Acts of terror or war may impair our ability to operate in particular countries or regions and may impede the flow of goods and services between countries. Customers in weakened economies may be unable to purchase our products, or it could become more expensive for them to purchase imported products in their local currency, or sell at competitive prices, and we may be unable to collect receivables from such customers. Further, changes in exchange rates may affect our net earnings, the book value of our assets outside the U.S. and our stockholders’ equity. Failure to comply with the laws and regulations that affect our global operations could have an adverse effect on our business, financial condition, or results of operations.

Consolidation in the healthcare industry could lead to price concessions or exclusion of some suppliers from some markets, which could have an adverse effect on our business, financial condition or results of operations.

Continued consolidation in the healthcare industry is expected to increase competition among providers of products and services to industry participants. This in turn has resulted and will likely continue to result in greater pricing pressures and the exclusion of certain suppliers from important market segments as GPOs, independent delivery networks and large single accounts continue to use their market power to consolidate purchasing decisions for some of our customers. We expect that market demand, government regulation, third-party reimbursement policies and societal pressures will continue to impact the worldwide healthcare industry, resulting in further business consolidations and alliances among our customers, which may reduce competition, exert further downward pressure on the prices of our products and may adversely impact our business, financial condition or results of operations.

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We may be subject to or otherwise affected by federal and state healthcare laws, including fraud and abuse, health information privacy and security, and disclosure laws, and could face substantial penalties if we are unable to fully comply with such laws.

Although we do not provide healthcare services, submit claims for third-party reimbursement, or receive payments directly from any third-party payers for our products or the procedures in which our products are used, healthcare regulation significantly impacts our business. Healthcare fraud and abuse, health information privacy and security, and disclosure laws potentially applicable to our operations include:

•the federal Anti-Kickback Statute, as well as state analogs, which prohibits, among other things, knowingly and willfully soliciting, receiving, offering or providing remuneration, intended to induce the purchase or recommendation of an item or service reimbursable under a federal (or state or commercial) healthcare program (such as the Medicare or Medicaid programs);

•federal and state bans on physician self-referrals, which prohibits, subject to exceptions, physician referrals of Medicare and Medicaid patients to an entity providing certain “designated health services” if the physician or its immediate family member has any financial relationship with the entity;

•false claims laws that prohibit, among other things, knowingly presenting, or causing to be presented, claims for payment from Medicare, Medicaid, or other third-party payers that are false or fraudulent;

•The Health Insurance Portability and Accountability Act ("HIPAA"), and its implementing regulations, which created federal criminal laws that prohibit executing a scheme to defraud any healthcare benefit program or making false statements relating to healthcare matters;

•the state and federal laws “sunshine” provisions that require detailed reporting and disclosures to the CMS and applicable states of any payments or “transfer of value” made or distributed to prescribers and other health care providers, and for certain states prohibit some forms of these payments, require the adoption of marketing codes of conduct, require the reporting of marketing expenditures and pricing information and constrain relationships with physicians and other referral sources;

•the Health Information Technology for Economic and Clinical Health Act (“HITECH”), which impose restrictions on uses and disclosures of protected health information and civil and criminal penalties for non-compliance and require the reporting of breaches to affected individuals, the government and in some cases the media in the event of a violation; and

•a variety of state-imposed privacy and data security laws which require the protection of personal information beyond health information and which require reporting to state officials in the event of breach or violation and which impose both civil and criminal penalties.

If our operations, or those of our independent sales agents violate any of such laws or any regulations that may apply to us, we may be subject to civil and criminal penalties, damages, fines, exclusion from federal healthcare programs and/or the curtailment or restructuring of our operations. If the healthcare providers, sales agents or other entities with which we do business are found to violate applicable laws, they may be subject to sanctions, which could also have a negative impact on us. Any penalties, damages, fines, curtailment or restructuring of our operations could adversely affect our ability to operate our business and our financial results.

Sales and marketing practices in the healthcare industry have been the subject of increased scrutiny from governmental agencies, and we believe that this trend will continue. Prosecutorial scrutiny and governmental oversight over the retention of healthcare professionals as consultants has affected and may continue to affect how medical device companies retain healthcare professionals as consultants. Our efforts to detect and prevent noncompliance with applicable laws may not be effective in protecting us from governmental investigations or other actions or lawsuits stemming from a failure to comply with these laws or regulations. Any action against us for violation of these laws, even if we successfully defend against them, could cause us to incur significant legal expenses and divert our management’s attention from the operation of our business.

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If we fail to timely obtain governmental clearances or approvals for our future products or modifications to our products, our ability to commercially distribute and market our products could suffer.

Our products are subject to extensive governmental regulations. The clearance and approval process, particularly with the FDA, can be costly and time consuming, and such clearances or approvals may not be granted on a timely basis, if at all. In particular, the FDA permits commercial distribution of most new medical devices only after receiving 510(k) clearance, or approval of a PMA. The FDA may make its 510(k) clearance process more restrictive and increase the time or expense required to obtain clearances or could make it unavailable for some of our products. A PMA must be submitted if the device cannot be cleared through the 510(k) process or is not exempt from premarket review by the FDA and must be supported by extensive data, including results of preclinical studies and clinical trials, manufacturing and control data and proposed labeling, to demonstrate to the FDA’s satisfaction the safety and effectiveness of the device for its intended use. The PMA process is more costly and uncertain than the 510(k) clearance process. In addition, any modification to a 510(k)-cleared device that could significantly affect its safety or effectiveness, or that would constitute a major change in its intended use, design or manufacture, requires a new 510(k) clearance or possibly a PMA.

Commercial distribution and marketing of any of our products or product modifications will be delayed until regulatory clearance or approval is obtained which may take significantly longer than anticipated. Governmental authorities can delay, limit or deny clearance or approval of a device for many reasons, including:

•our inability to demonstrate to the satisfaction of the applicable regulatory authority that our products are safe or effective for their intended uses, or that the clinical and other benefits of the device outweigh the risks;

•disagreement of the applicable regulatory authority with the design or implementation of our clinical trials or the interpretation of data from pre-clinical studies or clinical trials;

•serious and unexpected adverse effects experienced by participants in our clinical trials;

•data from our pre-clinical studies and clinical trials may be insufficient to support clearance or approval, where required;

•our manufacturing process or facilities we use may not meet applicable requirements; or

•approval policies or regulations of the applicable regulatory authorities change significantly in a manner rendering our clinical data or regulatory filings insufficient for clearance or approval.

Delays in obtaining regulatory clearances and approvals may delay or prevent commercialization of products we develop, require us to perform costly tests or studies, diminish any competitive advantages that we might otherwise have obtained and reduce our ability to generate revenues.

If we choose to acquire new and complementary businesses, products or technologies, we may be unable to complete these acquisitions or successfully integrate them in a cost-effective and non-disruptive manner.

Our success depends in part on our ability to continually enhance and broaden our product offering. Accordingly, we have pursued and intend to pursue the acquisition of complementary businesses, products or technologies. We do not know if we will be able to successfully complete any acquisitions or successfully integrate any acquired business. Our ability to successfully grow through acquisitions depends upon our ability to identify, negotiate, complete and integrate suitable acquisition targets. These efforts could be expensive and time consuming, disrupt our ongoing business and distract management. If we are unable to integrate any future or recently acquired businesses, products or technologies effectively, our business, financial condition and results of operations will be materially adversely affected.

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We are dependent on our senior management team, sales and marketing team, engineering team and key surgeon advisors, and the loss of any of them could harm our business.

Our continued success depends in part upon the continued availability and contributions of our senior management, sales and marketing team and engineering team and the continued participation of our key surgeon advisors. We compete for personnel and advisors with other companies and organizations, many of which have greater name recognition and resources than we do. Changes to our senior management team, sales and marketing team, engineering team and key surgeon advisors, or our inability to attract or retain other qualified personnel or advisors, could have a significant adverse effect on our business, financial condition and results of operations.

Security breaches, loss of data and other disruptions could compromise sensitive information related to our business, prevent us from accessing critical information or expose us to liability, which could adversely affect our business and our reputation.

We regularly collect and store sensitive data, including legally protected patient health and personally identifiable information, intellectual property information, and proprietary business information. We manage and maintain our applications and data utilizing on-site systems. The secure processing, storage, maintenance and transmission of this critical information is vital to our operations and business strategy, and we devote significant resources to protecting such information. Although we take measures to protect sensitive information from unauthorized access or disclosure, our information technology and infrastructure may be vulnerable to attacks by hackers, viruses, breaches or interruptions. Any such security incidents could compromise our networks and the information stored there could be accessed by unauthorized parties, disclosed, lost or stolen. Any such security incidents could also result in legal claims or proceedings, liability under laws that protect the privacy of personal information, government enforcement actions and regulatory penalties. Unauthorized access, loss or disclosure could also interrupt our operations and result in damage to our reputation, each of which could adversely affect our business.

Nearly all of our operations are currently conducted in locations that may be at risk of damage from fire, earthquakes or other natural disasters.

We conduct nearly all of our business activities in or near known wildfire areas and earthquake fault zones. We have taken precautions to safeguard our facilities, including obtaining property and casualty insurance, and implementing health and safety protocols. We have developed an information technology disaster recovery plan. However, any future natural disaster could cause substantial delays in our operations, damage or destroy our equipment or inventory and cause us to incur additional expenses. A disaster could seriously harm our business, financial condition and results of operations. Our insurance against earthquakes, fires, and other natural disasters would not be adequate to cover a total loss of our facilities, may not be adequate to cover our losses in any particular case and may not continue to be available to us on acceptable terms, or at all.

Public health crises, political crises, and other catastrophic events or other events outside of our control may impact our business.

A natural disaster (such as tsunami, power shortage, or flood), public health crisis (such as a pandemic or epidemic), political crisis (such as terrorism, war, political instability or other conflict), or other events outside of our control that may occur and may adversely impact our business and operating results. Moreover, these types of events could negatively impact surgeon or patient spending in the impacted region(s), which could adversely impact our operating results. We monitor such events and take actions that we deem reasonable given the circumstances. In the future other types of crises, may create an environment of business uncertainty around the world, which may hinder sales and/or supplies of our products nationally and internationally.

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Alphatec Holdings is a holding company with no operations, and unless it receives dividends or other payments from its subsidiaries, it will be unable to fulfill its cash obligations.

As a holding company with no business operations, Alphatec Holdings’ material assets consist only of the common stock of its subsidiaries, dividends and other payments received from time to time from its subsidiaries, and the proceeds raised from the sale of debt and equity securities. Alphatec Holdings’ subsidiaries are legally distinct from Alphatec Holdings and have no obligation, contingent or otherwise, to make funds available to Alphatec Holdings. Alphatec Holdings will have to rely upon dividends and other payments from its subsidiaries to generate the funds necessary to fulfill its cash obligations. Alphatec Holdings may not be able to access cash generated by its subsidiaries in order to fulfill cash commitments. The ability of Alphatec Spine, SafeOp, or EOS to make dividend and other payments to Alphatec Holdings is subject to the availability of funds after taking into account its subsidiaries’ funding requirements, the terms of its subsidiaries’ indebtedness and applicable state laws.

If we fail to properly manage our anticipated growth, our business could suffer.

While we intend to continue to pursue growth in our business, such anticipated growth is expected to place significant demands on our managerial, operational and financial resources and systems. Our management may need to divert a disproportionate amount of its attention from day-to-day activities to managing these anticipated growth activities. If we do not manage our anticipated growth effectively, the quality of our products, our relationships with physicians, sales agents and hospitals, and our reputation could suffer, which would have a significant adverse effect on our business, financial condition and results of operations.

If we decrease prices for our goods and services and we are unable to compensate for such reductions through changes in our product mix or reductions to our expenses, our results of operations will suffer.

We may be forced to decrease prices for our goods and services due to pricing pressure exerted by our customers in response to increased cost containment efforts from managed care organizations and other third-party payers and increased market power of our customers as the medical device industry consolidates. If we are unable to offset such price reductions through changes in our product mix or reductions in our expenses, our business, financial condition, results of operations and cash flows will be adversely affected.

Risks Related to Our Financial Results, Credit and Certain Financial Obligations and Need for Financing

We may need to raise additional funds in the future and such funds may not be available on acceptable terms, if at all.

At December 31, 2022, our principal sources of liquidity consisted of cash and cash equivalents of $84.7 million, accounts receivable, net, cash from operations and available borrowings under the Revolving Credit Facility. We believe that our current sources of liquidity will be sufficient to fund our planned expenditures and meet our obligations for at least 12 months subsequent to the date the consolidated financial statements are issued. If needed, we will seek additional funds from public and private equity or debt financings, borrowings under the Revolving Credit Facility, new debt facilities or other sources to fund our projected operating requirements. Our capital requirements will depend on many factors, including:

•the revenues generated by sales of our products;

•the costs associated with expanding our sales and marketing efforts;

•the expenses that we incur from the manufacture of our products by third parties and that we incur from selling our products;

•the costs of developing new products or technologies;

•the cost of obtaining and maintaining FDA or other regulatory approval or clearance for our products and products in development;

•the cost of filing and prosecuting patent applications and defending and enforcing our patent and other intellectual property rights;

•the number and timing of acquisitions and other strategic transactions;

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•the costs and any payments we may make related to our pending litigation matters;

•the costs associated with increased capital expenditures; and

•the costs associated with our employee retention programs and related benefits.

As a result of these factors, we may need to raise additional funds and such funds may not be available on favorable terms, if at all. In addition, rules and regulations of the SEC may restrict our ability to conduct certain types of financing activities or may affect the timing of and the amounts we can raise by undertaking such activities.

Furthermore, if we issue additional equity or debt securities to raise additional funds, our existing stockholders may experience dilution and the new equity or debt securities may have rights, preferences and privileges senior to those of our existing stockholders. In addition, if we raise additional funds through collaboration, licensing or other similar arrangements, it may be necessary to relinquish valuable rights to our potential products or proprietary technologies, or to grant licenses on terms that are not favorable to us. If we cannot raise funds on acceptable terms, we may not be able to repay debt or other liabilities, develop or enhance our products, execute our business plan, take advantage of future opportunities, or respond to competitive pressures or unanticipated customer requirements. Any of these events could adversely affect our ability to achieve our development and commercialization goals and have a significant adverse effect on our business, financial condition and results of operations.

Covenants in our loan documents and indenture may restrict our business and operations and if we do not effectively manage our covenants, our financial condition and results of operations could be adversely affected.
 

The loan agreements we entered into in connection with our Revolving Credit Facility and the Braidwell Term Loan as well as the indenture governing our 2026 Notes contain certain affirmative, operating or financial covenants. These covenants could adversely affect our ability to operate our business, our liquidity or our results of operations, and our inability to comply with any of these covenants could result in a default under the applicable loan agreement or indenture, which could result in an increase the applicable interest rate or all amounts borrowed under the applicable debt instrument, together with accrued interest and other fees, to become due and payable or, with respect to our Revolving Credit Facility, could result in MidCap refusing to make further extensions of credit to it. If our indebtedness under the Revolving Credit Facility, the Braidwell Term Loan or the 2026 Notes were to be accelerated, if the amount of interest owing under such debt or, in the case of the Revolving Credit Facility, if MidCap refuses to make further extensions of credit to us, we may not have sufficient cash available to repay the amounts due, and we may be forced to seek an amendment to the applicable loan terms or obtain alternative financing, which may not be available to us on acceptable terms, if at all. In addition, if we are unable to repay outstanding borrowings when due or upon an event of default, in the case of the Revolving Credit Facility and Braidwell Term Loan, the lender would also have the right to proceed against the collateral, including substantially all of our assets, granted to secure the indebtedness under the debt obligation. If the applicable lender proceeds against the collateral, such assets would no longer be available for use in our business, which would have a significant adverse effect our business, financial condition and results of operations.
 

We have a history of net losses, we expect to continue to incur net losses in the near future, and we may not achieve or maintain profitability.

We have typically incurred net losses since our inception. As of December 31, 2022, we had an accumulated deficit of $934.5 million. We have incurred significant net losses since inception and have relied on our ability to fund our operations through revenues from the sale of our products and equity and debt financings. Successful transition to profitability is dependent upon achieving a level of revenues adequate to support our cost structure. This may not occur and, unless and until it does, we will continue to need to raise additional capital. We may seek additional funds from public and private equity or debt financings, borrowings under new debt facilities or other sources to fund our projected operating requirements. However, we may not be able to obtain further financing on reasonable terms or at all. If we are unable to raise additional funds on a timely basis, or at all, we would be materially adversely affected.

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A sudden and significant economic downturn or volatility in the economy in the U.S. and our other major markets could have a material adverse impact on our business, financial condition, results of operations, or cash flows.

We operate primarily in the U.S. but also globally and as a result our business and revenues are impacted by domestic and global macroeconomic conditions. A weakening of economic conditions, including from a worsening of the ongoing labor shortage or rising in inflation, could lead to increased costs to our business and reductions in demand for our products. Weakened economic conditions or a recession could reduce the amounts that customers are willing or able to spend on our products. Furthermore, a high percentage of our expenses, including those related to inventory, capital investments, and operating costs are generally fixed in nature in the short term. If we are not able to timely and appropriately adapt to changes resulting from a weak or uncertain economic environment, our business, financial condition, results of operations and cash flows could be adversely impacted.

Adverse economic conditions in the U.S. may negatively affect our business, financial condition or results of operations.

The U.S. has recently experienced historically high levels of inflation. If the inflation rate remains high or continues to increase, such as increases in the costs of labor and supplies, it will likely affect our expenses. Additionally, the U.S. is experiencing an acute workforce shortage, which in turn, has created a hyper-competitive wage environment that may increase our operating costs. To the extent inflation results in rising interest rates and has other adverse effects on the market, it may adversely affect our business, financial condition or results of operations.

Our quarterly financial results could fluctuate significantly.

Our quarterly financial results are difficult to predict and may fluctuate significantly from period to period, particularly because our sales prospects are uncertain. The level of our revenues and results of operations at any given time will be based primarily on the following factors:

•acceptance of our products by spine surgeons, patients, hospitals and third-party payers;

•demand and pricing of our products, and the mix of our products sold, because profit margins differ among our products;

•timing of new product offerings, acquisitions, licenses or other significant events by us or our competitors;

•our ability to grow and maintain a productive sales and marketing organization and independent sales agent network;

•regulatory approvals and legislative changes affecting the products we may offer or those of our competitors;

•the effect of competing technological and market developments;

•levels of third-party reimbursement for our products;

•interruption in the manufacturing or distribution of our products or our ability to produce or obtain products of satisfactory quality or in sufficient quantities to meet demand; and

•changes in our ability to obtain FDA, state and international approval or clearance for our products.

In addition, until we have a larger base of spine surgeons using our products, occasional fluctuations in the use of our products by individual surgeons or small groups of surgeons will have a proportionately larger impact on our revenues than for companies with a larger customer base.

We cannot begin to commercialize any products that we seek to introduce in the U.S. without FDA approval or clearance. As a result, it will be difficult for us to forecast demand for these products with any degree of certainty. Any shortfalls in revenue or earnings from levels expected by our stockholders or by industry analysts could have a significant adverse effect on the trading price of our common stock in any given period.

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Risks Related to Our Intellectual Property, Regulatory Penalties and Litigation

If our patents and other intellectual property rights do not adequately protect our products, we may lose market share to our competitors and be unable to operate our business profitably.

Our success depends significantly on our ability to protect our proprietary rights in the technologies used in our products. We rely on patent protection, as well as a combination of copyright, trade secret and trademark laws, and confidentiality and other contractual restrictions to protect our proprietary technology. These legal means afford only limited protection and may not adequately protect our rights or permit us to gain or keep any competitive advantage. For example, our pending patent applications may not result in issued patents. The U.S. Patent and Trademark Office (“PTO”) may deny or require significant narrowing of claims in our pending patent applications, and patents issued as a result of the pending patent applications, if any, may not provide us with significant commercial protection or be issued in a form that is advantageous to us. We could also incur substantial costs in proceedings before the PTO. These proceedings could result in adverse decisions as to the priority of our inventions and the narrowing or invalidation of claims in issued patents. Issued patents could subsequently be successfully challenged by others and invalidated or rendered unenforceable, which could limit our ability to prevent competitors from marketing and selling related products. In addition, our pending patent applications include claims to aspects of our products and procedures that are not currently protected by issued patents.

Both the patent application process and the process of managing patent disputes can be time consuming and expensive. Competitors may design around our patents or develop products that provide outcomes that are comparable to our products but fall outside of the scope of our patent protection. Although we have entered into confidentiality agreements and intellectual property assignment agreements with certain of our employees, consultants and advisors as one of the ways we seek to protect our intellectual property and other proprietary technology, such agreements may not be enforceable or may not provide meaningful protection for our trade secrets or other proprietary information in the event of unauthorized use or disclosure or other breaches of the agreements. In the event a competitor infringes upon one of our patents or other intellectual property rights, enforcing those patents and rights may be difficult and time consuming. Even if successful, litigation to defend our patents against challenges or to enforce our intellectual property rights could be expensive and time consuming and could divert management’s attention from managing our business. Moreover, we may not have sufficient resources to defend our patents against challenges or to enforce our intellectual property rights.

The medical device industry is characterized by patent and other intellectual property litigation and we could become subject to litigation that could be costly, result in the diversion of management’s time and efforts, require us to pay damages, and/or prevent us from marketing our existing or future products.

The medical device industry is characterized by extensive litigation and administrative proceedings over patent and other intellectual property rights. Determining whether a product infringes a patent involves complex legal and factual issues, the determination of which is often uncertain. Our competitors may assert that our products, components of those products, methods of using those products, or methods we employ to manufacture or process those products are covered by patents held by them. In addition, they may claim that their patents have priority over ours because their patents were filed first. Because patent applications can take many years to issue, there may be applications now pending of which we are unaware, which may later result in issued patents that our products may infringe. There could also be existing patents that one or more components of our products may be inadvertently infringing, of which we are unaware. As the number of participants in the market for spine disorder devices and treatments increases, the possibility of patent infringement claims against us also increases.

Any such claim against us, even those without merit, may cause us to incur substantial costs, and could place a significant strain on our financial resources, divert the attention of management from our core business and harm our reputation. If the relevant patents are upheld as valid and enforceable and we are found to infringe, we could be required to pay substantial damages and/or royalties and we could be prevented from selling our products unless we obtain a license or redesign our products to avoid infringement. Any such license may not be available on reasonable terms, if at all, and we may be unable to redesign our products to not infringe those patents, and any such redesign, if possible, may be costly. If we fail to obtain any required licenses or make any necessary changes to our products, we may have to withdraw existing products from the market or may be unable to commercialize one or more of our products, either of which could have a significant adverse effect on our business, financial condition and results of operations. We may lose market share to our competitors if we fail to protect our intellectual property rights.

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In addition, we enter into agreements with spine surgeons to develop new products. As consideration for product development activities rendered pursuant to these agreements, in some instances we have agreed to pay royalties on products developed by cooperative involvement between us and such surgeons. The surgeons with whom we have entered into such an arrangement might claim to be entitled to a royalty even if we do not believe that such products were developed by cooperative involvement between us and such surgeons. Any such claim, even those without merit, may cause us to incur substantial costs, and could place a significant strain on our financial resources, divert the attention of management from our core business and harm our reputation.

If we become subject to product liability claims, we may be required to pay damages that exceed our insurance coverage.

Our business exposes us to potential product liability claims that are inherent in the manufacture and sale of medical devices for spine surgery procedures. Spine surgery involves significant risk of serious complications, including paralysis and even death. We carry product liability insurance. However, our product liability insurance coverage may be inadequate to satisfy liabilities we might incur. Any product liability claim brought against us could result in the increase of our product liability insurance rates or our inability to secure coverage in the future on commercially reasonable terms. If our product liability insurance proves to be inadequate to pay a damage award, we may have to pay the excess out of our cash reserves, which could harm our financial condition. If longer-term patient results and experience indicate that our products or any component of our products cause tissue damage, motor impairment or other adverse effects, we could be subject to significant liability. Even a meritless or unsuccessful product liability claim could harm our reputation in the industry, lead to significant legal fees and result in the diversion of management’s attention from managing our business. If a product liability claim or series of claims is brought against us in excess of our insurance coverage limits, our business could suffer and our financial condition, results of operations and cash flow could be materially adversely impacted.

Because biologics products entail a potential risk of communicable disease to human recipients, we may be the subject of product liability claims regarding our biologics products.

Our biologics products may expose us to additional potential product liability claims. The development of biologics products entails the risk of transmitting disease to human recipients, and substantial product liability claims may be asserted against us. In addition, successful product liability claims made against one of our competitors could cause claims to be made against us or expose us to a perception that we are vulnerable to similar claims. Even a meritless or unsuccessful product liability claim could harm our reputation in the industry, lead to significant legal fees and result in the diversion of management’s attention from managing our business.

Any claims relating to our improper handling, storage or disposal of biological, hazardous and radioactive materials could be time consuming and costly.

The manufacture of certain of our products, including our biologics products, involves the controlled use of biological, hazardous and/or radioactive materials and waste. Our business and facilities and those of our suppliers are subject to laws and regulations governing the use, manufacture, storage, handling and disposal of these materials and waste. Although we believe that our safety procedures comply with legally prescribed standards, we cannot completely eliminate the risk of accidental contamination or injury from these materials. In the event of an accident, we could be held liable for damages or penalized with fines, which could exceed our resources and insurance. We may incur significant expenses in the future relating to any failure to comply with applicable laws and regulations, which could have a significant negative impact on our business, financial condition and results of operations.

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Risks Related to Our Common Stock

Our stock price may fluctuate significantly, particularly if holders of substantial amounts of our stock attempt to sell, and holders may have difficulty selling their shares based on trading volumes of our stock.

The market price of our common stock is likely to be highly volatile and may fluctuate substantially due to many factors, including those described elsewhere in this “Risk Factors” section and the following:

•volume and timing of orders for our products;

•quarterly variations in our or our competitors’ results of operations;

•our announcement or our competitors’ announcements regarding new or enhanced products, product enhancements, significant contracts, number of sales agents, number of hospitals and spine surgeons using products, acquisitions, and collaborative or strategic investments;

•announcements of technological or medical innovations for the treatment of spine pathology;

•changes in earnings estimates or recommendations by securities analysts;

•our ability to develop, obtain regulatory clearance or approval for, and market new and enhanced products on a timely basis;

•changes in healthcare policy in the U.S., including changes in governmental regulations or in the status of our regulatory approvals, clearances or applications, and changes in the availability of third-party reimbursement in the U.S.;

•product liability claims or other litigation involving us, including disputes or other developments with respect to intellectual property rights;

•sales of large blocks of our common stock, including sales by our executive officers, directors and significant stockholders;

•changes in accounting principles; and

•general market conditions and other factors, including factors unrelated to our operating performance or the operating performance of our competitors.

We may become involved in securities class action litigation that could divert management’s attention and harm our business.

The stock market in general, the NASDAQ Global Select Market and the market for medical device companies in particular, has experienced price and volume fluctuations that have often been unrelated or disproportionate to the operating performance of those companies. In the past, following periods of volatility in the market price of a particular company’s securities, the company becomes subject to securities class action litigation. We may become involved in this type of litigation. Litigation is often expensive and diverts management’s attention and resources, which could materially harm our financial condition, results of operations and business.

Securities analysts may not provide coverage of our common stock or may issue negative reports, which may have a negative impact on the market price of our common stock.

Securities analysts may not provide research coverage of our common stock. The trading market for our common stock may be affected in part by the research and reports that analysts publish about our business. If one or more of the analysts who elects to cover us downgrades our stock, our stock price could likely decline rapidly. If one or more of these analysts ceases coverage of us, we could lose visibility in the market, which in turn could cause our stock price to decline.

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Because of their significant stock ownership, our executive officers, directors and principal stockholders will be able to exert control over us and our significant corporate decisions.

Based on shares outstanding at February 23, 2023, our executive officers, directors and stockholders holding more than 5% of our outstanding common stock and their affiliates, in the aggregate, beneficially own approximately 30% of our outstanding common stock. As a result, these persons will have the ability to impact significantly the outcome of all matters requiring stockholder approval, including the election and removal of directors and any merger, consolidation, or sale of all or substantially all of our assets. This concentration of ownership may harm the market price of our common stock by delaying, deferring or preventing our change in control, causing us to enter into transactions or agreements that are not in the best interests of all of our stockholders, or reducing our public float held by non-affiliates.

Anti-takeover provisions in our organizational documents and change of control provisions in some of our employment agreements and agreements with sales agents, and in some of our outstanding debt agreements, as well as the terms of our redeemable preferred stock, may discourage or prevent a change of control, even if an acquisition would be beneficial to our stockholders, which could affect our stock price adversely.

Certain provisions of our amended and restated certificate of incorporation and restated by-laws could discourage, delay or prevent a merger, acquisition or other change in control that stockholders may consider favorable, including transactions in which our stockholders might otherwise receive a premium for their shares. These provisions also could limit the price that investors might be willing to pay in the future for shares of our common stock, thereby depressing the market price of our common stock. Stockholders who wish to participate in these transactions may not have the opportunity to do so. Furthermore, these provisions could prevent or frustrate attempts by our stockholders to replace or remove our management. These provisions:

•allow the authorized number of directors to be changed only by resolution of our Board of Directors;

•allow vacancies on our Board of Directors to be filled only by resolution of our Board of Directors;

•authorize our Board of Directors to issue, without stockholder approval, blank check preferred stock that, if issued, could operate as a “poison pill” to dilute the stock ownership of a potential hostile acquirer to prevent an acquisition that is not approved by our Board of Directors;

•require that stockholder actions must be effected at a duly called stockholder meeting and prohibit stockholder action by written consent;

•establish advance notice requirements for stockholder nominations to our Board of Directors and for stockholder proposals that can be acted on at stockholder meetings; and

•limit who may call stockholder meetings.

These provisions may frustrate or prevent attempts by our stockholders to replace or remove our current management by making it more difficult for stockholders to replace members of our Board of Directors, which is responsible for appointing our management. In addition, because we are incorporated in Delaware, we are governed by the provisions of Section 203 of the Delaware General Corporation Law, which limits the ability of stockholders owning in excess of 15% of our outstanding voting stock to merge or combine with us.

Some of our agreements provide for accelerated vesting of benefits, including full vesting of restricted stock and options, upon a change of control, or extends the term of the agreement upon a change in control and make it more difficult for us or our successor to terminate the agreement. These provisions may discourage or prevent a change of control.

In addition, in the event of a change of control, we would be required to redeem all outstanding shares of our redeemable preferred stock for an aggregate of $29.9 million, at the price of $9.00 per share. Further, our amended and restated certificate of incorporation permits us to issue additional shares of preferred stock. The terms of our redeemable preferred stock or any new preferred stock we may issue could have the effect of delaying, deterring or preventing a change in control.

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Our ability to use our net operating loss carryforwards and certain other tax attributes may be limited.

Under Sections 382 and 383 of the Internal Revenue Code of 1986, as amended, if a corporation undergoes an “ownership change,” generally defined as a cumulative change in its equity ownership by “5-percent shareholders” of greater than 50 percentage points (by value) over a three-year period, the corporation’s ability to use its pre-change net operating loss carryforwards (“NOLs”), and certain other pre-change tax attributes (such as research tax credits) to offset its post-change taxable income and taxes may be limited. We have completed multiple rounds of financing and entered into transactions which may subject us to the Section 382 limitations. We may also experience ownership changes in the future. As a result, our ability to use our NOLs and research and development credits to offset our U.S. federal taxable income and taxes may be subject to limitations, which could potentially result in increased future tax liability to us. In addition, similar rules may also apply at the state level, and there may be periods during which the use of NOLs is suspended or limited, which could accelerate or permanently increase state taxes owed.

We could be subject to changes in our tax rates, new tax legislation or additional tax liabilities.

We are subject to taxes in the U.S. and foreign jurisdictions. Significant judgment is required to determine and estimate our worldwide tax liabilities. Due to economic and political conditions, tax rates in various jurisdictions may be subject to significant change. Our effective income tax rates have been, and could in the future be, adversely affected by changes in tax laws or interpretations of those tax laws; by stock-based compensation and other non-deductible expenses; by changes in the mix of earnings in countries with differing statutory tax rates; or by changes in the valuation of our deferred tax assets and liabilities.

Our tax returns and other tax matters also are subject to examination by the U.S. Internal Revenue Service and other tax authorities and governmental bodies. We regularly assess the likelihood of an adverse outcome resulting from these examinations to determine the adequacy of our provision for taxes. We cannot guarantee the outcome of these examinations. If our effective tax rates were to increase, particularly in the U.S., or if the ultimate determination of our taxes owed is for an amount in excess of amounts previously accrued, our financial condition, operating results and cash flows could be adversely affected.

Item 1B. Unresolved Staff Comments

None.

Item 2. Properties

Our corporate office is located in Carlsbad, California. The table below provides selected information regarding the leased principal properties used in our operations.

Location	Use	Approximate Square Footage
Carlsbad, California	Corporate headquarters		121,541
Memphis, Tennessee	Distribution facility		75,643
Paris, France	Office facilities		15,156

Item 3. Legal Proceedings

For a description of our material legal proceedings, refer to Note 7 of our Notes to Consolidated Financial Statements included in this Annual Report on Form 10-K, which is incorporated herein by reference.

Item 4. Mine Safety Disclosures

Not applicable.

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PART II

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

Market Information

Our common stock is traded on The NASDAQ Global Select Market under the symbol “ATEC.”

Stockholders

As of February 23, 2023, there were approximately 365 holders of record of an aggregate 111,109,933 outstanding shares of our common stock.

Dividend Policy

We have never declared or paid cash dividends on our capital stock. We currently intend to retain all available funds and any future earnings for use in the operation and expansion of our business and do not anticipate paying any cash dividends in the foreseeable future.

Unregistered Sales of Equity Securities and Use of Proceeds

During the three months ended December 31, 2022, the Company issued unregistered equity securities as described below:

On October 3, 2022, October 18, 2022, and November 14, 2022 the Company issued 625, 100 and 1,250 restricted shares of the Company’s common stock with a grant date fair values of $13.47, $13.47, and $12.18, respectively, based on the market price of common stock on grant dates, to an independent sales agent for distribution and related services rendered to the Company.

The issuances of the foregoing securities were made in reliance on the exemption from registration provided by Section 4(a)(2) of the Securities Act of 1933, as amended, as there was no general solicitation and the transactions did not involve a public offering.

Purchases of Equity Securities

Under the terms of our 2016 Equity Incentive Plan and our Amended and Restated 2005 Employee, Director and Consultant Stock Plan, as amended, which we refer to collectively as the Stock Plans, and prior to the expiration of the Stock Plans in May 2026, we are permitted to award shares of restricted stock to our employees, directors, and consultants. These shares of restricted stock are subject to a lapsing right of repurchase by us. We may exercise this right of repurchase in the event that a restricted stock recipient’s employment, directorship or consulting relationship with us terminates prior to the end of the vesting period. If we exercise this right, we are required to repay the purchase price paid by or on behalf of the recipient for the repurchased restricted shares. Repurchased shares are returned to the Stock Plans and are available for future awards under the terms of the Stock Plans.

There were no repurchases of common stock during the year ended December 31, 2022.

Stock Performance Graph

The following graph compares the cumulative total stockholder return data on our common stock with the cumulative return of two indices: (i) The Nasdaq Stock Market Composite Index, and (ii) The Nasdaq Medical Equipment Index over the five-year period ending December 31, 2022. The graph assumes that $100 was invested on December 31, 2017 in our common stock and in each of the comparative indices, and the reinvestment of any dividends. The stock price performance on the following graph is not necessarily indicative of future stock price performance.

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The following graph and related information shall not be deemed "soliciting material" or deemed to be "filed" with the SEC, nor shall such information be incorporated by reference into any future filing, except to the extent that we specifically incorporate it by reference into such filing.

COMPARISON OF 5 YEAR CUMULATIVE TOTAL RETURN*

AMONG ALPHATEC HOLDINGS, INC.,

THE NASDAQ COMPOSITE INDEX

AND THE NASDAQ MEDICAL EQUIPMENT INDEX

 

*$100 invested on December 31, 2017 in stock or index, including reinvestment of dividends.

Item 6. Reserved

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

The following discussion of our financial condition and results of operations should be read in conjunction with the financial statements and the notes to those statements appearing elsewhere in this Annual Report on Form 10-K. A discussion regarding our financial condition and results of operations for 2022 compared to 2021 is presented under “Results of Operations” further below in this Item 7. For discussion regarding our financial condition and the results of operations for 2021 compared to 2020, refer to Part II, Item 7 Management’s Discussion and Analysis of Financial Condition and Results of Operations in our Annual Report on Form 10-K for the year ended December 31, 2021.

Some of the information contained in this discussion and analysis or set forth elsewhere in this report include the identification of certain trends and other statements that may predict or anticipate future business or financial results that are subject to important factors that could cause our actual results to differ materially from those indicated. See “Item 1A Risk Factors” included elsewhere in this Annual Report on Form 10-K.

Overview

We are a medical technology company focused on the design, development, and advancement of technology for better surgical treatment of spinal disorders. Through our wholly owned subsidiaries, Alphatec Spine, Inc., SafeOp Surgical, Inc. and EOS imaging S.A., our mission is to revolutionize the approach to spine surgery through clinical distinction. We are focused on developing new approaches that integrate seamlessly with our expanding Alpha InformatiX™ product platform to better inform surgery and to achieve the goal of spine surgery more predictably and reproducibly. We have a broad product portfolio designed to address the spine’s various pathologies. Our ultimate vision is to be the standard bearer in spine.

Our ability to leverage our collective spine experience, coupled with a willingness to invest in every component of the advanced spine approaches that we bring to market has fueled market-leading growth in every year since early 2018. We believe our future success will continue to be propelled by the introduction and traction of the distinct procedures and technologies that our procedural investment thesis engenders.

We market and sell our products through a network of independent sales agents and direct sales representatives. To deliver consistent, predictable growth, we have added, and intend to continue to add, clinically astute and exclusive sales team members to reach untapped surgeons, hospitals, and national accounts and better penetrate existing accounts and territories.

Recent Developments

Term Loan

On January 6, 2023, we entered into the Braidwell Term Loan. The Braidwell Term Loan provides for an initial term loan of $100.0 million which was funded on the closing date. We have the option to draw an additional $50.0 million within 18 months of the closing date. The Braidwell Term Loan matures in January 2028. Borrowings under the Braidwell Term Loan bear interest at an annual rate of Term SOFR plus 5.75%. The outstanding portion of the term loan is secured by substantially all of our assets with the priority interest of the lenders in the Braidwell Term Loan and the Revolving Credit Facility, as defined below, subject to terms of a customary intercreditor agreement.

Revolving Credit Facility

In September 2022, we entered into the Revolving Credit Facility with entities affiliated with MidCap. The Revolving Credit Facility provides up to $50.0 million in borrowing capacity based on a borrowing base. The borrowing base is calculated based on certain accounts receivable and inventory assets. We may request a $25.0 million increase in the Revolving Credit Facility for a total commitment of up to $75.0 million. The Revolving Credit Facility matures on the earlier of September 29, 2027, or 90 days prior to the final maturity date of any of our 2026 Notes.

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The outstanding loans bear interest at the sum of Term SOFR plus 3.5% per annum. Interest on borrowings is due monthly. The loan agreements include an unused line fee, which is calculated as 0.50% per annum of either the unused Revolving Credit Facility or a minimum balance. Upon the Revolving Credit Facility’s maturity, any outstanding principal balance, unpaid accrued interest, and all other obligations under the Revolving Credit Facility will be due and payable.

The Revolving Credit Facility contains a lockbox arrangement clause requiring us to maintain a lockbox bank account. If the revolving loan availability is less than 30% of the revolving loan limit for five consecutive business days, or we are in default, MidCap will apply funds collected from our lockbox account to reduce the outstanding balance of the Revolving Credit Facility.

The outstanding loans are secured by substantially all of our assets with the priority interest of the lenders in the Braidwell Term Loan and the Revolving Credit Facility subject to terms of a customary intercreditor agreement. The loan agreements and other ancillary documents contain customary representations and warranties and affirmative and negative covenants. Under the loan agreements, we are required to maintain a minimum level of liquidity. The loan agreements also include certain events of default, and upon the occurrence of such events of default, all outstanding loans under the Revolving Credit Facility may be accelerated and/or the lenders’ commitments terminated.

Revenue and Expense Components

The following is a description of the primary components of our revenue and expenses:

Revenue. We derive our revenue primarily from the sale of spinal surgery implants used in the treatment of spine disorders as well as the sale of medical imaging equipment which is used for surgical planning and post-operative assessment. Spinal implant products include pedicle screws and complementary implants, interbody devices, plates, and tissue-based materials. Medical imaging equipment includes our EOS full-body and weight-bearing x-ray imaging devices, and related services. Our revenue is generated by our direct sales force and independent sales agents. Our products are shipped and invoiced to hospitals and surgical centers. Currently, most of our business is conducted with customers within markets in which we have experience and with payment terms that are customary to our business. We may defer revenue until the time of collection if circumstances related to payment terms, regional market risk or customer history indicate that collectability is not certain.

Cost of sales. Cost of sales consists primarily of direct product costs, royalties, service labor hours, and parts. Our product costs consist primarily of raw materials, component parts, direct labor, and overhead. The product costs of certain of our biologics products include the cost of procuring and processing human tissue. We incur royalties related to the technologies that we license from others and the products that are developed in part by surgeons with whom we collaborate in the product development process.

Research and development expenses. Research and development expenses consist of costs associated with the design, development, testing, and enhancement of our products. Research and development expenses also include salaries and related employee benefits, research-related overhead expenses, and fees paid to external service providers and development consultants in the form of both cash and equity.

Sales, general and administrative expenses. Sales, general and administrative expenses consist primarily of salaries and related employee benefits, sales commissions and other variable costs, depreciation of our surgical instruments, regulatory affairs, quality assurance costs, professional service fees, travel, medical education, trade show and marketing costs, and insurance expenses.

Litigation-related expenses. Litigation-related expenses are costs incurred for our ongoing and settled litigation.

Amortization of acquired intangible assets. Amortization of acquired intangible assets consists of intangible assets acquired in business combinations and asset purchases.

Transaction-related expenses. Transaction-related expenses consist of certain costs incurred related primarily to the acquisition and integration of EOS.

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Restructuring expenses. Restructuring expenses primarily consist of severance, social plan benefits and related tax costs incurred in connection with cost rationalization efforts, as well as costs associated with the opening or closing of office and warehouse facilities.

Total interest and other expense, net. Total interest and other expense, net includes interest income, interest expense, gains and losses from foreign currency exchanges and other non-operating gains and losses.

Income tax provision. Income tax provision primarily consists of an estimate of federal, state, and foreign income taxes based on enacted state and foreign tax rates, as adjusted for allowable credits, deductions, uncertain tax positions, changes in the valuation of our deferred tax assets and liabilities, and changes in tax laws.

Results of Operations

Total revenue

	Year Ended December 31,				Change
(in thousands, except %)	2022		2021		$			%
Revenue:
Revenue from products and services	$	350,852	$	242,258	$	108,594			45	%
Revenue from international supply agreement		15		954		(939	)		(98	)%
Total revenue	$	350,867	$	243,212	$	107,655			44	%

Revenue from products and services increased by $108.6 million, or 45%, during the year ended December 31, 2022, compared to the year ended December 31, 2021. The increase was primarily due to an increase in product volume that was due to the increase in our surgeon user base, continued expansion of our new product portfolio, and increasing adoption of our technology. Revenue associated with our acquisition of EOS accounted for approximately $16.0 million of the increase in revenue from products and services for the year ended December 31, 2022, compared to the pre-acquisition period during the year ended December 31, 2021.

Revenue from international supply agreement, which is attributed to sales to Globus Medical Ireland, Ltd., a subsidiary of Globus Medical, Inc., and its affiliated entities (collectively “Globus Medical”), under which we supplied to Globus Medical certain of its implants and instruments at agreed-upon prices for a minimum term of three years, decreased by $1.0 million, or 98%, during the year ended December 31, 2022 compared to the year ended December 31, 2021. The decrease in revenue from the international supply was due the expiration and termination of the international supply agreement with Globus Medical on August 31, 2021.

Cost of sales

	Year Ended December 31,				Change
(in thousands, except %)	2022		2021		$		%
Cost of sales	$	117,808	$	85,450	$	32,358		38	%

Cost of sales increased by $32.4 million, or 38%, during the year ended December 31, 2022, compared to the year ended December 31, 2021. The increase was primarily due to product volume, offset by a decrease in inventory expense associated with the purchase accounting of the EOS acquisition. Cost of sales associated with our acquisition of EOS accounted for approximately $10.1 million of the increase for the year ended December 31, 2022, compared to the pre-acquisition period during the year ended December 31, 2021. Inventory expense associated with the purchase accounting of EOS offset the increase by approximately $5.1 million, or 16%.

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Operating expenses

	Year Ended December 31,				Change
(in thousands, except %)	2022		2021		$			%
Operating expenses:
Research and development	$	44,033	$	32,015	$	12,018			38	%
Sales, general and administrative		300,013		229,271		70,742			31	%
Litigation-related expenses		23,943		11,123		12,820			115	%
Amortization of acquired intangible assets		10,115		5,348		4,767			89	%
Transaction-related expenses		120		6,365		(6,245	)		(98	)%
Restructuring expenses		1,810		1,697		113			7	%
Total operating expenses	$	380,034	$	285,819	$	94,215			33	%

Research and development expenses. Research and development expenses increased by $12.0 million, or 38%, during the year ended December 31, 2022, compared to the year ended December 31, 2021. The increase was primarily due to an increase in personnel to support the expansion of our new product portfolio. Research and development costs associated with EOS accounted for approximately $2.0 million of the total increase for the year ended December 31, 2022, as compared to the pre-acquisition period during the year ended December 31, 2021.

Sales, general and administrative expenses. Sales, general and administrative expenses increased by $70.7 million, or 31%, during the year ended December 31, 2022, compared to the year ended December 30, 2021. The increase was primarily due to higher compensation-related costs and variable selling expenses associated with the increase in revenue, and our continued investment in building our strategic distribution channel. Additionally, we have increased our investment in our sales and marketing functions by increasing headcount to support the growth of our business. Sales, general and administrative expenses associated with EOS accounted for approximately $7.6 million of the total increase for the year ended December 31, 2022, as compared to the pre-acquisition period during the year ended December 31, 2021.

Litigation-related expenses. Litigation-related expenses increased by $12.8 million, or 115%, during the year ended December 31, 2022, compared to the year ended December 31, 2021. The increase was primarily related to an increase in legal fees and related accruals associated with our ongoing and settled litigation matters. Refer to Note 7 of our Notes to Consolidated Financial Statements included elsewhere in this Annual Report on Form 10-K for further information regarding litigation matters.

Amortization of acquired intangible assets. The increase of amortization of acquired intangible assets is primarily due to the amortization of intangible assets acquired in the EOS acquisition.

Transaction-related expenses. The decrease in transaction-related expenses for the year ended December 31, 2022 is primarily due to the closing of the EOS acquisition on May 13, 2021.

Restructuring expenses. The increase in restructuring costs for the year ended December 31, 2022 was primarily due to severance, social plan benefits and related taxes in connection with cost rationalization efforts.

Total interest and other expense, net

	Year Ended December 31,						Change
(in thousands, except %)	2022			2021			$		%
Interest and other expense, net:
Interest expense, net	$	(5,505	)	$	(7,108	)	$	1,603		(23	)%
Loss on debt extinguishment, net		—			(7,434	)		7,434		(100	)%
Other income (expense), net		471			(1,563	)		2,034		(130	)%
Total interest and other expense, net	$	(5,034	)	$	(16,105	)	$	11,071		(69	)%

The decrease in interest expense, net, during the year ended December 31, 2022, compared to the year ended December 30, 2021, was primarily due to lower interest rates on the 2026 Notes compared to the term loan with

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Squadron Medical Finance Solutions, LLC (the "Squadron Medical Term Loan"), that was repaid in full during the year ended December 31, 2021. The decrease in loss on debt extinguishment, net, during the year ended December 31, 2022, compared to the year ended December 31, 2021 was due to the net loss on debt extinguishment associated with the early payoff of the Squadron Medical Term Loan and the Paycheck Protection Program loan forgiveness, which were non-recurring expenses in 2021. The decrease in other income (expense), net, during the year ended December 31, 2022, compared to the year ended December 31, 2021, was primarily due to foreign currency gains.

Income tax provision

	Year Ended December 31,				Change
(in thousands, except %)	2022		2021		$			%
Income tax provision	$	140	$	164	$	(24	)		(15	)%

Income tax provision for the year ended December 31, 2022 was negligible and remained consistent compared to the year ended December 31, 2021.

Liquidity and Capital Resources

Our principal sources of liquidity are our existing cash and cash equivalents, our Revolving Credit Facility, and cash from operations. Our liquidity and capital structure are evaluated regularly within the context of our annual operating and strategic planning process. We consider the liquidity necessary to fund our operations, which includes working capital needs, investments in research and development, investments in inventory and instrument sets to support our customers, as well as other operating costs. Our future capital requirements will depend on many factors including our rate of revenue growth, the timing and extent of spending to support development efforts, the expansion of sales, marketing and administrative activities, the timing of introductions of new products and enhancements to existing products, and the international expansions of our business.

As current borrowing sources become due, we may be required to access the capital markets for additional funding. If we are required to access the debt markets, we expect to be able to secure reasonable borrowing rates. As part of our liquidity strategy, we will continue to monitor our current level of spending and cash use as well as our ability to secure additional credit facilities, term loans, or other similar arrangements in light of our spending levels and general financial market conditions.

A substantial portion of our operations are in the U.S., and most of our net sales have been made in the U.S. Accordingly, we do not have material exposures to foreign currency rate fluctuations from operations. However, as our business in markets outside of the U.S. continues to increase, we will be exposed to foreign currency exchange risk related to our foreign operations.

We do not have any material financial exposure to one customer or one country that would significantly hinder our liquidity. We are and may become involved in various legal proceedings arising from our business activities. While we have no material accruals for pending litigation or claims for which accrual amounts are not disclosed in our consolidated financial statements, litigation is inherently unpredictable, and depending on the nature and timing of a proceeding, an unfavorable resolution could materially affect our future consolidated results of operations, cash flows or financial position in a particular period. We assess contingencies to determine the degree of probability and range of possible loss for potential accrual or disclosure in our consolidated financial statements. An estimated loss contingency is accrued in our consolidated financial statements if it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Assessing contingencies is highly subjective and requires judgments about future events because litigation is inherently unpredictable, and unfavorable resolutions could occur. When evaluating contingencies, we may be unable to provide a meaningful estimate due to a number of factors, including the procedural status of the matter in question, the presence of complex or novel legal theories, and/or the ongoing discovery and development of information important to the matters. In addition, damage amounts claimed in litigation against us may be unsupported, exaggerated, or unrelated to reasonably possible outcomes, and as such are not meaningful indicators of our potential liability. We have disclosed all material accruals for pending litigation or investigations in Note 7, Commitments and Contingencies, in the Notes to Consolidated Financial Statements included in this Annual Report.

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Cash and cash equivalents were $84.7 million and $187.2 million at December 31, 2022 and December 31, 2021, respectively. We have available borrowings under the Revolving Credit Facility and the Braidwell Term Loan discussed above. We believe that our existing funds, cash generated from our operations and our existing sources of and access to financing are adequate to satisfy our needs for working capital, capital expenditure, debt service requirements and other business initiatives we plan to strategically pursue.

Summary of Cash Flows

The following is a summary of cash provided by (used in) operating, investing, and financing activities, the effect of exchange rate changes on cash and cash equivalents, and the net change in cash and cash equivalents:

	Year Ended December 31,
		2022			2021			2020
Cash (used in) provided by:
Operating activities		$	(75,143	)	$	(73,432	)	$	(46,412	)
Investing activities			(58,280	)		(157,762	)		(23,859	)
Financing activities			31,228			311,966			130,829
Effect of exchange rate changes on cash			(357	)		(1,289	)		94
Net (decrease) increase in cash and cash equivalents		$	(102,552	)	$	79,483		$	60,652

Operating Activities

We used net cash of $75.1 million from operating activities for the year ended December 31, 2022. The cash used in operating activities primarily related to costs associated with the continued expansion of our business and inventory purchases, offset by the timing of cash payments and receipts.

Investing Activities

We used cash of $58.3 million in investing activities for the year ended December 31, 2022, which is primarily related to the purchase of surgical instruments to support the commercial launch of new products and growth of our business.

Financing Activities

Financing activities provided net cash of $31.2 million for the year ended December 31, 2022, primarily related to proceeds from the Revolving Credit Facility.

Debt and Commitments

As of December 31, 2022, we had $35.3 million outstanding under the Revolving Credit Facility. The outstanding loans bear interest at the sum of Term SOFR plus 3.5% per annum. The Revolving Credit Facility matures on the earlier of September 29, 2027, or 90 days prior to the final maturity date of any of our 2026 Notes.

As of December 31, 2022, we had $316.3 million outstanding under the 2026 Notes. The 2026 Notes accrue interest at a rate of 0.75%, payable semi-annually in arrears on February 1 and August 1 of each year. Prior to maturity in August 2026, the holders of the 2026 Notes may, under certain circumstances, choose to convert their notes into shares of our common stock. Based on the terms, we have the option to pay or deliver cash, shares of our common stock, or a combination thereof, when a conversion notice is received.

We assumed the outstanding convertible bonds of EOS (“OCEANEs”) issued by EOS in connection with our acquisition of EOS. The OCEANEs bear interest at 6% per year, payable semi-annually in arrears on May 31 and November 30 of each year. Unless either earlier converted or repurchased, the outstanding OCEANEs of $13.3 million (€12.5 million) will mature on May 31, 2023.

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We assumed $5.1 million (€4.8 million) in other debts with the acquisition of EOS that are due in monthly and quarterly installments through maturity in 2027.

As of December 31, 2022, we have made $53.4 million in Orthotec settlement payments and there remains an outstanding balance of $4.1 million in Orthotec settlement payments to be paid by us in quarterly installments through October 2023.

We have an inventory purchase commitment agreement with a third-party supplier, where we are obligated to certain minimum purchase commitment requirements through December 2025. As of December 31, 2022, the remaining minimum purchase commitment under the agreement was $27.4 million.

Contractual obligations and commercial commitments

Total contractual obligations and commercial commitments as of December 31, 2022 are summarized in the following table (in thousands):

	Payments Due by Period
	Total		1 Year or Less		More than 1 Year
Senior Convertible Notes	$	316,250	$	—	$	316,250
Revolving Credit Facility		35,251		—		35,251
Facility lease obligations (1)		38,247		4,937		33,310
Purchase commitments (2)		27,449		5,826		21,623
OCEANEs		13,333		13,333		—
Interest expense		10,102		2,696		7,406
Orthotec litigation settlement obligation (3)		4,064		4,064		—
Other (4)		5,046		656		4,390
Development services plans		3,854		—		3,854
Total	$	453,596	$	31,512	$	422,084

(1)Includes our headquarters building lease that commenced in February 2021.

(2)Includes inventory purchase commitments of $27.4 million.

(3)Represents payments, including imputed interest, due to Orthotec, LLC pursuant to a Settlement and Release Agreement, dated as of August 13, 2014, by and among the Company and its direct subsidiaries, including Alphatec Spine, Inc., Alphatec Holdings International C.V., Scient'x S.A.S. and Surgiview S.A.S.; HealthpointCapital, LLC, HealthpointCapital Partners, L.P., HealthpointCapital Partners II, L.P., John H. Foster and Mortimer Berkowitz III; and Orthotec, LLC and Patrick Bertranou.

(4)Represents cash repayments of government sponsored COVID relief initiatives at EOS.

Off-Balance Sheet Arrangements

As of December 31, 2022, we did not have any off-balance sheet arrangements.

Critical Accounting Policies and Estimates

Our discussion and analysis of our financial condition and results of operations is based upon our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States of America. The preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures. On an on-going basis, we evaluate our estimates and assumptions, including those related to revenue recognition, allowances for accounts receivable, inventories and intangible assets, stock-based compensation and income taxes. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumption conditions.

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We believe the following accounting policies to be critical to the judgments and estimates used in the preparation of our consolidated financial statements.

Revenue Recognition

We recognize revenue from product sales in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Revenue from Contracts with Customers (“Topic 606”). This standard applies to all contracts with customers, except for contracts that are within the scope of other standards, such as leases, insurance, collaboration arrangements, and financial instruments. Under Topic 606, an entity recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration that the entity expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that an entity determines are within the scope of Topic 606, the entity performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation. We only apply the five-step model to contracts when it is probable that we will collect the consideration we are entitled to in exchange for the goods or services that we transfer to the customer.

Sales are derived primarily from the sale of spinal implant products, imaging equipment, and related services to hospitals and medical centers through direct sales representatives and independent sales agents. Revenue is recognized when obligations under the terms of a contract with customers are satisfied, which occurs with the transfer of control of products to customers, either upon shipment of the product or delivery of the product to the customer depending on the shipping terms, or when the products are used in a surgical procedure (implanted in a patient). Revenue from the sale of imaging equipment is recognized as each distinct performance obligation is fulfilled and control transfers to the customer, beginning with shipment or delivery, depending on the terms. Revenue from other distinct performance obligations, such as maintenance on imaging equipment, and other imaging related services, is recognized in the period the service is performed, and makes up less than 10% of our total revenue. Revenue is measured based on the amount of consideration expected to be received in exchange for the transfer of the goods or services specified in the contract with each customer. In certain cases, we offer the ability for customers to lease our imaging equipment primarily on a non-sales type basis, but such arrangements are immaterial to total revenue in the years presented. We generally do not allow returns of products that have been delivered. Costs incurred by us associated with sales contracts with customers are deferred over the performance obligation period and recognized in the same period as the related revenue, except for contracts that complete within one year or less, in which case the associated costs are expensed as incurred. Payment terms for sales to customers may vary but are commensurate with the general business practices in the country of sale.

To the extent that the transaction price includes variable consideration, such as discounts, rebates, and customer payment penalties, we estimate the amount of variable consideration that should be included in the transaction price utilizing either the expected value method or the most likely amount method depending on the nature of the variable consideration. Variable consideration is included in the transaction price if, in our judgment, it is probable that a significant future reversal of cumulative revenue under the contract will not occur. Estimates of variable consideration and determination of whether to include estimated amounts in the transaction price are based largely on an assessment of our anticipated performance and all information that is reasonably available, including historical, current, and forecasted information.

We record a contract liability, or deferred revenue, when we have an obligation to provide a product or service to the customer and payment is received in advance of our performance. When we sell a product or service with a future performance obligation, revenue is deferred on the unfulfilled performance obligation and recognized over the related performance period. Generally, we do not have observable evidence of the standalone selling price related to our future service obligations; therefore, we estimate the selling price using an expected cost plus a margin approach. The transaction price is allocated using the relative standalone selling price method. The use of alternative estimates could result in a different amount of revenue deferral.

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Excess and Obsolete Inventory

Most of our inventory is comprised of finished goods, and we primarily utilize third-party suppliers to produce our products. Specialized implants, fixation products, biologics, and disposables are determined by utilizing a standard cost method, which includes capitalized variances, which approximates the weighted average cost. Imaging equipment and related parts are valued at weighted average cost. Inventories are stated at the lower of cost or net realizable value. We review the components of inventory on a periodic basis for excess and obsolescence and adjust inventory to its net realizable value as necessary.

We record a lower of cost or net realizable value inventory reserve (“LCNRV”) for estimated excess and obsolete inventory based upon our expected use of inventory on hand. Our inventory, which consists primarily of specialized implants, fixation products, biologics, and disposables is at risk of obsolescence due to the need to maintain substantial levels of inventory. In order to market our products effectively and meet the demands of interoperative product placement, we maintain and provide surgeons and hospitals with a variety of inventory products and sizes. For each surgery, fewer than all components will be consumed. The need to maintain and provide such a variety of inventory causes inventory to be held that is not likely to be used.

Our estimates and assumptions for excess and obsolete inventory are reviewed and updated on a quarterly basis. The estimates and assumptions are determined primarily based on current usage of inventory and the age of inventory quantities on hand. Additionally, we consider recent sales experience to develop assumptions about future demand for our products, while considering product life cycles and new product launches. Increases in the LCNRV reserve for excess and obsolete inventory result in a corresponding charge to cost of sales.

Valuation of Goodwill

Our goodwill represents the excess of the cost over the fair value of net assets acquired from our business combinations. The determination of the value of goodwill and intangible assets arising from business combinations and asset acquisitions requires extensive use of accounting estimates and judgments to allocate the purchase price to the fair value of the net tangible and intangible assets acquired. Goodwill is assessed for impairment using fair value measurement techniques on an annual basis or more frequently if facts and circumstance warrant such a review. Goodwill is considered to be impaired if we determine that the carrying value of the reporting unit exceeds its respective fair value.

Valuation of Intangible Assets

Our intangible assets are comprised primarily of purchased technology, customer relationships, trade name, trademarks, and in-process research and development. We make significant judgments in relation to the valuation of intangible assets resulting from business combinations and asset acquisitions. Intangible assets are generally amortized on a straight-line basis over their estimated useful lives of 2 to 12 years. We base the useful lives and related amortization expense on the period of time we estimate the assets will generate net sales or otherwise be used. We also periodically review the lives assigned to our intangible assets to ensure that our initial estimates do not exceed any revised estimated periods from which we expect to realize cash flows. If a change were to occur in any of the above-mentioned factors or estimates, the likelihood of a material change in our reported results would increase. We evaluate our intangible assets with finite lives for indications of impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. Factors that could trigger an impairment review include significant under-performance relative to expected historical or projected future operating results, significant changes in the manner of our use of the acquired assets or the strategy for our overall business or significant negative industry or economic trends. If this evaluation indicates that the value of the intangible asset may be impaired, we make an assessment of the recoverability of the net carrying value of the asset over its remaining useful life. If this assessment indicates that the intangible asset is not recoverable, based on the estimated undiscounted future cash flows of the asset over the remaining amortization period, we reduce the net carrying value of the related intangible asset to fair value and may adjust the remaining amortization period. Significant judgment is required in the forecasts of future operating results that are used in the discounted cash flow valuation models. It is possible that plans may change and estimates used may prove to be inaccurate. If our actual results, or the plans and estimates used in future impairment analyses, are lower than the original estimates used to assess the recoverability of these assets, we could incur additional impairment charges.

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Valuation of Stock-Based Compensation

Stock-based compensation expense for equity-classified awards, principally related to restricted stock units ("RSUs") and performance restricted stock units ("PRSUs") is measured at the grant date based on the estimated fair value of the award. The fair value of equity instruments that are expected to vest is recognized and amortized over the requisite service period. We have granted awards with up to four year graded or cliff vesting terms. No exercise price or other monetary payment is required for receipt of the shares issued in settlement of the respective award; instead, consideration is furnished in the form of the participant’s service.

The fair value of RSUs including PRSUs with pre-defined performance criteria is based on the stock price on the date of grant whereas the expense for PRSUs with pre-defined performance criteria is adjusted with the probability of achievement of such performance criteria at each period end. The fair value of the PRSUs that are earned based on the achievement of pre-defined market conditions, is estimated on the date of grant using a Monte Carlo valuation model. The key assumptions in applying this model are an expected volatility and a risk-free interest rate.

Stock-based compensation recorded in our consolidated statements of operations is based on awards expected to ultimately vest and has been reduced for estimated forfeitures. Our estimated forfeiture rates may differ from our actual forfeitures. We consider our historical experience of pre-vesting forfeitures on awards by each homogenous group of employees as the basis to arrive at our estimated annual pre-vesting forfeiture rates.

We estimate the fair value of stock options issued under our equity incentive plans and shares issued to employees under our employee stock purchase plan ("ESPP"), using a Black-Scholes option-pricing model on the date of grant. The Black-Scholes option-pricing model incorporates various assumptions including expected volatility, expected term and risk-free interest rates. The expected volatility is based on the historical volatility of our common stock over the most recent period commensurate with the estimated expected term of our stock options and ESPP offering period which is derived from historical experience. The risk-free interest rate for periods within the contractual life of the option is based on the U.S. Treasury yield in effect at the time of grant. We have never declared or paid dividends and have no plans to do so in the foreseeable future.

We account for stock option grants to non-employees under provisions which require that the fair value of these instruments be recognized as an expense over the period in which the related services are rendered.

Recent Accounting Pronouncements

See “Notes to Financial Statements - Note 1 - Recent Accounting Pronouncements” included elsewhere in this Annual Report on Form 10-K.

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Item 7A. Quantitative and Qualitative Disclosures About Market Risk

Interest Rate Risk

We are exposed to interest rate risks related to our cash, cash equivalents and borrowings. We had cash and cash equivalents of $84.7 million as of December 31, 2022, which consist of cash and money market funds. Interest-earning money market funds carry a degree of interest rate risk; however, historical fluctuations in interest income have not been significant.

Loans under the Revolving Credit Facility and the Braidwell Term Loan bear interest at floating rates tied to Term SOFR. As a result, changes in Term SOFR can affect our results of operation and cash flows. As of December 31, 2022, the outstanding balance under the Revolving Credit Facility was $35.3 million. The interest rate as of December 31, 2022 was 7.7%.

Foreign Currency Exchange Risk

As our business in markets outside of the U.S. continues to increase, we may be exposed to foreign currency exchange risks related to our foreign operations. Fluctuations in the rate of exchange between the U.S. and foreign currencies, primarily the euro, could adversely affect our financial results. We do not have any material financial exposure to one customer or one country that would significantly hinder our liquidity.

Commodity Price Risk

We purchase raw materials that are processed from commodities, such as titanium and stainless steel. These purchases expose us to fluctuations in commodity prices. Given the historical volatility of certain commodity prices, this exposure can impact our product costs. However, because our raw material prices comprise a small portion of our cost of sales, we have not experienced any material impact on our results of operations from changes in commodity prices. A 10% change in commodity prices would not have had a material impact on our results of operations for the year ended December 31, 2022.

Item 8. Financial Statements and Supplementary Data

The consolidated financial statements and supplementary data required by this item are set forth at the pages indicated in Item 15.

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

None.

Item 9A. Controls and Procedures

Disclosure Controls and Procedures

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

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Under the supervision and with the participation of our management, including our Chief Executive Officer and our Chief Financial Officer, we carried out an evaluation of the effectiveness of the Company’s disclosure controls and procedures (as defined in SEC Rules 13a - 15(e) and 15d - 15(e) of the Exchange Act) as of December 31, 2022. Based on such evaluation, our management has concluded as of December 31, 2022, the Company’s disclosure controls and procedures are effective at the reasonable assurance level.

Management’s Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rule 13a-15(f) under the Exchange Act. Internal control over financial reporting refers to the process designed by, or under the supervision of, our Chief Executive Officer and Chief Financial Officer, and effected by our Board of Directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. generally accepted accounting principles.

Management has used the framework set forth in the report entitled Internal Control - Integrated Framework published by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) to evaluate the effectiveness of the Company’s internal control over financial reporting. Management has concluded that the Company’s internal control over financial reporting was effective as of December 31, 2022, based on those criteria.

Deloitte & Touche LLP, the Company’s independent registered public accounting firm, who audited the consolidated financial statements included in this Annual Report on Form 10-K, has issued an attestation report on the Company’s internal control over financial reporting as of December 31, 2022. This report states that internal control over financial reporting was effective and appears in “Report of Independent Registered Public Accounting Firm” in Part IV, Item 15 of this Annual Report on Form 10-K.

Changes in Internal Control over Financial Reporting

We are involved in ongoing evaluations of internal controls. In anticipation of the filing of this Annual Report on Form 10-K, our Chief Executive Officer and Chief Financial Officer, with the assistance of other members of our management, performed an evaluation of any change in internal control over financial reporting that occurred during our last fiscal quarter that has materially affected, or is reasonably likely to materially affect, our internal controls over financial reporting. We are in the process of implementing a new enterprise resource planning (“ERP”) system that affects many of our financial processes and is expected to improve the efficiency and effectiveness of certain financial and business transaction processes, as well as the underlying systems environment. There has been no change to our internal control over financial reporting during our most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Item 9B. Other Information

None.

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

Not applicable.

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PART III

Item 10. Directors, Executive Officers and Corporate Governance

The information required by this item is incorporated herein by reference to our Proxy Statement with respect to our 2023 Annual Meeting of Stockholders to be filed with the SEC within 120 days of the end of the fiscal year covered by this Annual Report on Form 10-K.

Item 11. Executive Compensation

The information required by this item is incorporated herein by reference to our Proxy Statement with respect to our 2023 Annual Meeting of Stockholders to be filed with the SEC within 120 days of the end of the fiscal year covered by this Annual Report on Form 10-K.

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

The information required by this item is incorporated herein by reference to our Proxy Statement with respect to our 2023 Annual Meeting of Stockholders to be filed with the SEC within 120 days of the end of the fiscal year covered by this Annual Report on Form 10-K.

Item 13. Certain Relationships and Related Transactions, and Director Independence

The information required by this item is incorporated herein by reference to our Proxy Statement with respect to our 2023 Annual Meeting of Stockholders to be filed with the SEC within 120 days of the end of the fiscal year covered by this Annual Report on Form 10-K.

Item 14. Principal Accounting Fees and Services

The information required by this item is incorporated herein by reference to our Proxy Statement with respect to our 2023 Annual Meeting of Stockholders to be filed with the SEC within 120 days of the end of the fiscal year covered by this Annual Report on Form 10-K.

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PART IV

Item 15. Exhibits, Financial Statement Schedules

Item 15 (a) The following documents are filed as part of this Annual Report on Form 10-K:

(1) Financial Statements:

	Page
Reports of Independent Registered Public Accounting Firm	F-2
Consolidated Balance Sheets	F-6
Consolidated Statements of Operations	F-7
Consolidated Statements of Comprehensive Loss	F-8
Consolidated Statements of Stockholders’ Equity	F-9
Consolidated Statements of Cash Flows	F-12
Notes to Consolidated Financial Statements	F-13

(2) Financial Statement Schedules

Schedule II. Valuation and Qualifying Accounts:

All other financial statement schedules have been omitted because they are not applicable, not required or the information required by such schedules is shown in the financial statements or the notes thereto.

(3) Exhibits List

The following is a list of exhibits filed as part of this Annual Report on Form 10-K.

Exhibit Number	Exhibit Description	Filed with this Report	Incorporated by Reference herein from Form or Schedule	Filing Date	SEC File/ Reg. Number
3.1	Amended and Restated Certificate of Incorporation of Alphatec Holdings, Inc.		Amendment No. 2 to Form S-1 (Exhibit 3.2)	04/20/06	333-131609
3.2	Amendment to the Certificate of Incorporation of Alphatec Holdings, Inc.		Form 8-K (Exhibit 3.1(B))	08/24/16	000-52024
3.3	Restated Bylaws of Alphatec Holdings, Inc.		Amendment No. 5 to Form S-1 (Exhibit 3.4)	05/26/06	333-131609
3.4	Form of Certificate of Designation of Preferences, Rights and Limitations of Series A convertible Preferred Stock of Alphatec Holdings, Inc.		Form 8-K (Exhibit 3.1)	03/23/17	000-52024
3.5	Form of Certificate of Designation of Preferences, Rights and Limitations of Series B convertible Preferred Stock of Alphatec Holdings, Inc.		Form 8-K (Exhibit 3.1)	03/12/18	000-52024
4.1	Form of Common Stock Certificate		Form 10-K (Exhibit 4.1)	03/20/14	333-131609
4.2	Amended and Restated Registration Rights Agreement, dated April 16, 2018, by and among Alphatec Holdings, Inc. and the other signatories thereto		Form 8-K/A (Exhibit 4.1)	04/16/18	000-52024
4.3	Registration Rights Agreement, dated November 6, 2018, by and among Alphatec		Form S-3/A (Exhibit 4.5)	11/13/18	333-221085

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Exhibit Number	Exhibit Description	Filed with this Report	Incorporated by Reference herein from Form or Schedule	Filing Date	SEC File/ Reg. Number
	Holdings, Inc. and the other signatories thereto
4.4	Form of Warrant issued to certain investors on March 8, 2018		Form 8-K (Exhibit 4.1)	03/12/18	000-52024
4.5	Form of Registration Rights Agreement		Form 8-K (Exhibit 4.2)	03/23/17	000-52024
4.6	Second Amended and Restated Warrant to Purchase Common Stock of Alphatec Holdings, Inc. issued to Patrick S. Miles	X
4.7	Form of Warrant to Purchase Common Stock of Alphatec Holdings, Inc. issued in connection with financing dated November 6, 2018		Form S-3/A (Exhibit 4.11)	11/13/18	333-221085
4.8	Form of Warrant to Purchase Common Stock of Alphatec Holdings, Inc. issued in connection with financing dated June 21, 2019		Form 8-K (Exhibit 10.1)	06/27/19	000-52024
4.9	Form of Merger Warrant		Form 8-K (Exhibit 4.3)	03/12/18	000-52024
4.10	Registration Rights Agreement between Alphatec Holdings, Inc., and Squadron Medical Finance Solutions LLC and Tawani Holdings LLC, dated November 6, 2018		Form S-3/A (Exhibit 4.5)	11/13/18	333-221085
4.11	Registration Rights Agreement between Alphatec Holdings, Inc., and Squadron Medical Finance Solutions LLC and Tawani Holdings LLC, dated June 21, 2019		Form 8-K (Exhibit 10.2)	06/27/19	000-52024
4.12	Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities and Exchange Act of 1934		Form 10-K (Exhibit 4.15)	03/17/20	000-52024
4.13	Form of Common Stock Purchase Warrant		Form 8-K (Exhibit 4.1)	06/04/20	000-52024
4.14	Form of Amendment to Warrant		Form 8-K (Exhibit 4.2)	06/04/20	000-52024
4.15	Form of Second Amendment to Warrant		Form 8-K (Exhibit 4.3)	06/04/20	000-52024
4.16	Registration Rights Agreement between Alphatec Holdings, Inc., and Squadron Medical Finance Solutions LLC and Tawani Holdings LLC, dated May 29, 2020		Form 8-K (Exhibit 4.4)	06/04/20	000-52024
4.17	Registration Rights Agreement, dated December 16, 2020		Form 8-K (Exhibit 4.1)	12/17/20	000-52024

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Exhibit Number	Exhibit Description	Filed with this Report	Incorporated by Reference herein from Form or Schedule	Filing Date	SEC File/ Reg. Number
4.18	Indenture, dated as of August 10, 2021, between Alphatec Holdings, Inc. and U.S. Bank National Association, as trustee.		Form 8-K (Exhibit 4.1)	8/10/21	000-52024
4.19	Form of certificate representing the 0.75% Convertible Senior Notes due 2026.		Form 8-K (Exhibit 4.2)	8/10/21	000-52024
	Securities Purchase Agreements
10.1	Securities Purchase Agreement dated as of March 8, 2018, between Alphatec Holdings, Inc. and each purchaser named in the signature pages thereto		Form 8-K (Exhibit 10.1)	03/12/18	000-52024
	Real Property Lease Agreements
10.2	Lease Agreement by and between Alphatec Spine, Inc. and RAF Pacifica Group - Real Estate Fund IV, LLC; ARKA Monterey Park, LLC, and 170 Arrowhead Partners, LLC, dated as of December 4, 2019		Form 10-K (Exhibit 10.3	03/17/20	000-52024
	Capped Call Agreements
10.3	Form of Confirmation of Call Option Transaction		Form 8-K (Exhibit 10.1)	8/10/21	000-52024
	Agreements with Respect to Product Supply, Collaborations, Licenses, Research and Development
10.4†	Supply Agreement by and between Alphatec Spine, Inc. and Invibio, Inc., dated as of October 18, 2004 and amended by Letter of Amendment in respect of the Supply Agreement, dated as of December 13, 2004		Amendment No. 4 to Form S-1 (Exhibit 10.29)	05/15/06	333-131609
10.5†	Letter Amendment between Alphatec Spine, Inc. and Invibio, Inc., dated November 24, 2010		Form 10-Q (Exhibit 10.3)	05/06/11	000-52024
	Agreements with Officers and Directors
10.6*	Employment Agreement with J. Todd Koning dated April 6, 2021		Form 8-K (Exhibit 10.1)	04/8/21	000-52024
10.7*	Employment Agreement with Craig E. Hunsaker dated September 14, 2016		Form 10-Q (Exhibit 10.5)	05/12/17	000-52024
10.8*	Employment Agreement by and among Patrick S. Miles, Alphatec Spine, Inc., and Alphatec Holdings, Inc., dated, October 2, 2017		Form 10-K (Exhibit 10.26)	03/09/18	000-52024
10.9*	Employment Agreement by and among Eric Dasso, Alphatec Spine, Inc., and Alphatec Holdings, Inc., dated, August 2, 2019		Form 10-K (Exhibit 10.29)	03/17/20	000-52024

51

Exhibit Number	Exhibit Description	Filed with this Report	Incorporated by Reference herein from Form or Schedule	Filing Date	SEC File/ Reg. Number
10.10*	Employment Agreement by and among Kelli Howell, Alphatec Spine, Inc., and Alphatec Holdings, Inc., dated March 10, 2018		Form 10-K (Exhibit 10.30)	03/17/20	000-52024
10.11*	Employment Agreement by and among Dave Sponsel, Alphatec Spine, Inc., and Alphatec Holdings, Inc., dated March 4, 2018		Form 10-K (Exhibit 10.31)	03/17/20	000-52024
10.12*	Severance Agreement between Dave Sponsel and Alphatec Spine, Inc dated March 11, 2019		Form 10-Q (Exhibit 10.2)	05/11/20	000-52024
10.13*	Severance Agreement between Eric Dasso and Alphatec Spine, Inc dated March 11, 2019		Form 10-Q (Exhibit 10.3)	05/11/20	000-52024
10.14*	Severance Agreement between Kelli Howell and Alphatec Spine, Inc dated March 11, 2019		Form 10-Q (Exhibit 10.4)	05/11/20	000-52024
10.15*	Severance Agreement between Patrick S. Miles and Alphatec Spine, Inc dated February 18, 2021		Form 8-K (Exhibit 10.1)	02/22/21	000-52024
10.16*	Severance Agreement between Craig E. Hunsaker and Alphatec Spine, Inc dated February 18, 2021		Form 8-K (Exhibit 10.2)	02/22/21	000-52024
10.17*	Form of Change in Control Agreement entered into separate between Alphatec Spine, Inc. and Dave Sponsel, Eric Dasso, Kelli Howell, Mark Ojeda		Form 10-K (Exhibit 10.30)	03/05/21	000-52024
	Equity Compensation Plans
10.18*	Amended and Restated 2005 Employee, Director and Consultant Stock Plan		Form S-8 (Exhibit 99.1)	03/23/13	333-187190
10.19*	Amendment to Amended and Restated 2005 Employee, Director and Consultant Stock Plan		Schedule 14A (Appendix B)	06/11/13	000-52024
10.20*	Amendment to the Amended and Restated 2005 Employee, Director and Consultant Stock Plan		Form 10-Q (Exhibit 10.1)	10/30/14	000-52024
10.21*	Form of Non-Qualified Stock Option Agreement issued under the Amended and Restated 2005 Employee, Director and Consultant Stock Plan		Form 10-K (Exhibit 10.40)	03/05/13	000-52024
10.22*	Form of Incentive Stock Option Agreement issued under the Amended and Restated 2005 Employee, Director and Consultant Stock Plan		Form 10-K (Exhibit 10.41)	03/05/13	000-52024

52

Exhibit Number	Exhibit Description	Filed with this Report	Incorporated by Reference herein from Form or Schedule	Filing Date	SEC File/ Reg. Number
10.23*	Form of Restricted Stock Agreement issued under the Amended and Restated 2005 Employee, Director and Consultant Stock Plan		Form 10-K (Exhibit 10.42)	03/05/14	000-52024
10.24*	Form of Performance-Based Restricted Unit Agreement issued under the Amended and Restated 2005 Employee, Director and Consultant Stock Plan.		Form 10-Q (Exhibit 10.2)	10/30/14	000-52024
10.25*	Amended and Restated 2016 Equity Incentive Award Plan		Form 8-K/A (Exhibit 10.1)	06/22/17	000-52024
10.26*	First Amendment to 2016 Equity Incentive Plan		Form 8-K (Exhibit 10.2)	05/18/18	000-52024
10.27*	Second Amendment to 2016 Equity Incentive Plan		Form 10-Q (Exhibit 10.1)	11/09/18	000-52024
10.28*	Third Amendment to 2016 Equity Incentive Plan		Form 8-K (Exhibit 10.2)	06/13/19	000-52024
10.29*	Fourth Amendment to 2016 Equity Incentive Plan		Form 8-K (Exhibit 10.2)	06/18/20	000-52024
10.30*	Amended and Restated 2007 Employee Stock Purchase Plan		Form 8-K/A (Exhibit 10.2)	06/22/17	000-52024
10.31*	First Amended and Restated 2007 Employee Stock Purchase Plan		Form 8-K (Exhibit 10.1)	06/13/19	000-52024
10.32*	Second Amended and Restated 2007 Employee Stock Purchase Plan		Form 8-K (Exhibit 10.1)	06/21/21	000-52024
10.33*	2016 Employment Inducement Plan		Form S-8 (Exhibit 10.2)	10/05/16	333-213981
10.34*	First Amendment to 2016 Employment Inducement Award Plan		Form S-8 (Exhibit 10.2)	12/12/16	333-215036
10.35*	Second Amendment to the 2016 Employment Inducement Award Plan		Form S-8 (Exhibit 10.3)	03/31/17	333-217055
10.36*	Third Amendment to the 2016 Employment Inducement Award Plan, dated October 1, 2017.		Form 8-K (Exhibit 10.4)	10/2/17	000-52024
10.37*	Fourth Amendment to the 2016 Employment Inducement Award Plan, dated March 6, 2018.		Form 8-K (Exhibit 10.9)	03/12/18	000-52024
10.38*	Fifth Amendment to the 2016 Employment Inducement Award Plan, dated May 13, 2019		Form S-8 (Exhibit 10.11)	07/16/19	333-232661
10.39*	Form of Restricted Stock Unit Grant Notice and Restricted Stock Unit Award Agreement under the 2016 Employment Inducement Award Plan		Form S-8 (Exhibit 10.3)	10/05/16	333-213981

53

Exhibit Number	Exhibit Description	Filed with this Report	Incorporated by Reference herein from Form or Schedule	Filing Date	SEC File/ Reg. Number
10.40*	Form of Stock Option Grant Notice and Stock Option Agreement under the 2016 Employment Inducement Award Plan		Form S-8 (Exhibit 10.4)	10/05/16	333-213981
10.41*	Form of Performance Stock-Based Award Grant Notice and Performance Stock-Based Award Agreement under the 2016 Employment Inducement Award Plan		Form S-8 (Exhibit 10.5)	10/05/16	333-213981
	Settlement Agreements
10.42	Settlement and Release Agreement, dated as of August 13, 2014, by and among Alphatec Holdings, Inc. and its direct and indirect subsidiaries and affiliates, Orthotec, LLC, Patrick Bertranou and the other parties named therein		Form 10-Q (Exhibit 10.3)	10/30/14	000-52024

54

Exhibit Number	Exhibit Description	Filed with this Report	Incorporated by Reference herein from Form or Schedule	Filing Date	SEC File/ Reg. Number
	Loan Agreements
10.43	Credit, Security and Guaranty Agreement, dated as of January 6, 2023, by and among Alphatec Holdings, Inc., as borrower, the guarantors from time to time party thereto, the lenders from time to time party thereto, and Wilmington Trust, National Association, as agent		Form 8-K (Exhibit 10.1)	01/09/23	000-52024
10.44	Credit Agreement, dated as of September 29, 2022, by and among Alphatec Holdings, Inc., Alphatec Spine, Inc. and the other borrowers from time to time party thereto, the guarantors from time to time party thereto, MidCap Financial Trust and the other lenders from time to time party thereto, and MidCap Funding IV Trust, as administrative agent		Form 8-K (Exhibit 10.1)	10/03/22	000-52024
10.45	Omnibus Joinder and Amendment No. 1 to Credit, Security and Guaranty Agreement, dated as of January 6, 2023, by and among Alphatec Holdings, Inc., Alphatec Spine, Inc., SafeOp Surgical, Inc., MidCap Funding IV Trust, as agent and the lenders party thereto		Form 8-K (Exhibit 10.2)	01/09/23	000-52024
21.1	Subsidiaries of the Registrant and Wholly Owned Subsidiaries of the Registrant's Subsidiaries		Form 10-K (Exhibit 21.1)	03/02/22	000-52024
23.1	Consent of Mayer Hoffman McCann P.C., Independent Registered Public Accounting Firm	X
23.2	Consent of Deloitte & Touche LLP, Independent Registered Public Accounting Firm	X
31.1	Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002	X
31.2	Certification of Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002	X
32	Certification pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	X
101.INS	XBRL Instance Document-the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.

55

Exhibit Number	Exhibit Description	Filed with this Report	Incorporated by Reference herein from Form or Schedule	Filing Date	SEC File/ Reg. Number
101.SCH	Inline XBRL Taxonomy Extension Schema Document
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document
104	Cover page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101).

(*) Management contract or compensatory plan or arrangement.

(†) Confidential treatment has been granted by the Securities and Exchange Commission as to certain portions.

56

SIGNATURES

Pursuant to the requirements 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.

		ALPHATEC HOLDINGS, INC.
Dated:	February 28, 2023	By:	/s/ Patrick S. Miles
			Patrick S. Miles
			Chairman and Chief Executive Officer
			(principal executive officer)
Dated:	February 28, 2023	By:	/s/ J. Todd Koning
			J. Todd Koning
			Executive Vice President and Chief Financial Officer
			(principal financial officer and principal accounting officer)

SIGNATURES AND POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Patrick S. Miles and J. Todd Koning, and each of them, as his or her true and lawful attorneys-in-fact and agents, each with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any and all amendments to this Annual Report on Form 10-K and to file the same, with all exhibits thereto and all documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that such attorneys-in-fact and agents or any of them, or his or her or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

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

Signature	Title	Date
/s/ Patrick S. Miles	Chairman and Chief Executive Officer (Principal Executive Officer)	February 28, 2023
Patrick S. Miles
/s/Mortimer Berkowitz III	Lead Director	February 28, 2023
Mortimer Berkowitz III
/s/Beth Altman	Director	February 28, 2023
Beth Altman
/s/Evan Bakst	Director	February 28, 2023
Evan Bakst
/s/Andy S. Barnett	Director	February 28, 2023
Andy S. Barnett
/s/Quentin Blackford	Director	February 28, 2023
Quentin Blackford
/s/Karen K. McGinnis	Director	February 28, 2023
Karen K. McGinnis
/s/Marie Meynadier	Director	February 28, 2023
Marie Meynadier
/s/David H. Mowry	Director	February 28, 2023
David H. Mowry

57

Signature	Title	Date
/s/David R. Pelizzon	Director	February 28, 2023
David R. Pelizzon
/s/Jeffrey P. Rydin	Director	February 28, 2023
Jeffrey P. Rydin
/s/James L. L. Tullis	Director	February 28, 2023
James L.L. Tullis
/s/Ward W. Woods	Director	February 28, 2023
Ward W. Woods

58

ALPHATEC HOLDINGS, INC.

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

	Page
Reports of Independent Registered Public Accounting Firm	F-2
Consolidated Balance Sheets	F-6
Consolidated Statements of Operations	F-7
Consolidated Statements of Comprehensive Loss	F-8
Consolidated Statements of Stockholders’ Equity	F-9
Consolidated Statements of Cash Flows	F-12
Notes to Consolidated Financial Statements	F-13

F-1

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the stockholders and the Board of Directors of Alphatec Holdings, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Alphatec Holdings, Inc. and subsidiaries (the "Company") as of December 31, 2022 and 2021, the related consolidated statements of operations, comprehensive loss, stockholders' (deficit) equity, and cash flows, for the years ended December 31, 2022 and 2021, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2022 and 2021, and the results of its operations and its cash flows for each of the two years in the period ended December 31, 2022, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2022, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 28, 2023, expressed an unqualified opinion on the Company's internal control over financial reporting.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Valuation of Inventories - Refer to Note 1 to the Financial Statements

The Company records its inventories at the lower of cost or net realizable value (“LCNRV”). Quarterly, the Company records an adjustment to its LCNRV inventory reserve for estimated excess and obsolete inventory based upon its expected use of inventory on hand. To determine the expected use of inventory, management develops estimates and assumptions primarily based on the current usage of inventory, and the age of inventory quantities on hand. Additionally, the Company considers recent sales experience to develop assumptions about future demand for its products, while considering product life cycles and new product launches. Inventories as of December 31, 2022 are $101.5 million. During the year ended December 31, 2022, the Company recognized $9.8 million of LCNRV charges related to excess and obsolete inventory.

F-2

We identified management’s estimation of excess and obsolete inventories, and the related LCNRV inventory reserve, as a critical audit matter due to management’s significant manual process used to determine the estimate, and the judgments required by management to estimate future use of their products. This required a high degree of auditor judgment and an increased extent of effort when performing audit procedures to evaluate the reasonableness of management’s assumptions related to expected use of inventory in future operations.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to management’s judgments used to estimate excess and obsolete inventory and the related LCNRV inventory reserve included the following, among others:

•We tested the effectiveness of controls over management’s estimate of excess and obsolete inventories, including:

omanagement’s assessment of assumptions used to identify excess and obsolete inventory and to estimate the related LCNRV inventory reserve.

othe completeness and accuracy of data used in the calculation.

•We evaluated the reasonableness of the methodology used by the Company to estimate the excess and obsolete inventories and related LCNRV reserve, by comparing actual results to the historical estimates.

•We evaluated the key assumptions used in identifying the population of inventory with excess or obsolescence exposure that require a reserve and determining the amount of reserve to record.

•We evaluated the appropriateness of the underlying data utilized in management’s analysis, including current inventory usage, product aging, recent sales, and product life cycle.

/s/ Deloitte & Touche LLP

San Diego, California

February 28, 2023

We have served as the Company's auditor since 2021.

F-3

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders of

Alphatec Holdings, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated statement of operations, comprehensive loss, stockholders’ equity, and cash flows of Alphatec Holdings, Inc. (the "Company") for the year ended December 31, 2020, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the results of the Company's operations and its cash flows for the year ended December 31, 2020, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audit. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) ("PCAOB") and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audit included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audit also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audit provides a reasonable basis for our opinion.

We served as the Company’s auditor since 2017, which ended in 2021.

/s/ Mayer Hoffman McCann P.C.

San Diego, California

March 5, 2021

F-4

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the stockholders and the Board of Directors of Alphatec Holdings, Inc.

Opinion on Internal Control over Financial Reporting

We have audited the internal control over financial reporting of Alphatec Holdings, Inc. and subsidiaries (the “Company”) as of December 31, 2022, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2022, based on criteria established in Internal Control — Integrated Framework (2013) issued by COSO.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements as of and for the year ended December 31, 2022, of the Company and our report dated February 28, 2023, expressed an unqualified opinion on those financial statements.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management's Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

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

Definition and Limitations of Internal Control over Financial Reporting

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

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

/s/ Deloitte & Touche LLP

San Diego, California

February 28, 2023

F-5

ALPHATEC HOLDINGS, INC.

CONSOLIDATED BALANCE SHEETS

(In thousands, except par value data)

	December 31,
	2022			2021
Assets
Current assets:
Cash and cash equivalents	$	84,696		$	187,248
Accounts receivable, net of allowances of $679 and $2,307, respectively		60,060			41,893
Inventories		101,521			91,703
Prepaid expenses and other current assets		9,357			10,313
Total current assets		255,634			331,157
Property and equipment, net		101,952			87,401
Right-of-use assets		28,360			25,283
Goodwill		39,775			39,689
Intangible assets, net		82,781			85,274
Other assets		4,874			3,249
Total assets	$	513,376		$	572,053
Liabilities and Stockholders’ (Deficit) Equity
Current liabilities:
Accounts payable	$	34,742		$	25,737
Accrued expenses and other current liabilities		72,382			55,549
Contract liabilities		11,956			15,255
Short-term debt		14,948			342
Current portion of operating lease liabilities		4,842			4,212
Total current liabilities		138,870			101,095
Long-term debt		349,511			326,489
Operating lease liabilities, less current portion		26,562			24,383
Other long-term liabilities		11,543			17,061
Redeemable preferred stock, $0.0001 par value; 20,000 shares authorized, and 3,319 shares issued and outstanding at December 31, 2022 and 2021		23,603			23,603
Commitments and contingencies (Note 7)
Stockholders’ (deficit) equity:
Series A convertible preferred stock, $0.0001 par value; 15 shares authorized, and 0 shares issued and outstanding at December 31, 2022 and 2021		—			—
Common stock, $0.0001 par value; 200,000 authorized; 106,673 shares issued and 106,640 outstanding at December 31, 2022, and 99,627 shares issued and 99,537 shares outstanding at December 31, 2021		11			10
Treasury stock, 1,808 shares at December 31, 2022 and December 31, 2021		(25,097	)		(25,097	)
Additional paid-in capital		933,537			892,828
Accumulated other comprehensive deficit		(10,690	)		(5,994	)
Accumulated deficit		(934,474	)		(782,325	)
Total stockholders’ (deficit) equity		(36,713	)		79,422
Total liabilities and stockholders’ (deficit) equity	$	513,376		$	572,053

See accompanying notes to consolidated financial statements.

F-6

ALPHATEC HOLDINGS, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share amounts)

	Year Ended December 31,
		2022			2021			2020
Revenue:
Revenue from products and services		$	350,852		$	242,258		$	141,079
Revenue from international supply agreement			15			954			3,782
Total revenue			350,867			243,212			144,861
Cost of sales			117,808			85,450			42,360
Gross profit			233,059			157,762			102,501
Operating expenses:
Research and development			44,033			32,015			18,745
Sales, general and administrative			300,013			229,271			129,156
Litigation-related expenses			23,943			11,123			8,552
Amortization of acquired intangible assets			10,115			5,348			688
Transaction-related expenses			120			6,365			4,223
Restructuring expenses			1,810			1,697			—
Total operating expenses			380,034			285,819			161,364
Operating loss			(146,975	)		(128,057	)		(58,863	)
Interest and other expense, net:
Interest expense, net			(5,505	)		(7,108	)		(12,374	)
Loss on debt extinguishment, net			—			(7,434	)		(7,612	)
Other income (expense), net			471			(1,563	)		—
Total interest and other expense, net			(5,034	)		(16,105	)		(19,986	)
Net loss before taxes			(152,009	)		(144,162	)		(78,849	)
Income tax provision			140			164			145
Net loss		$	(152,149	)	$	(144,326	)	$	(78,994	)
Net loss per share, basic and diluted		$	(1.47	)	$	(1.50	)	$	(1.18	)
Weighted average shares outstanding, basic and diluted			103,373			96,197			67,020

See accompanying notes to consolidated financial statements.

F-7

ALPHATEC HOLDINGS, INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS

(in thousands)

	Year Ended December 31,
		2022			2021			2020
Net loss		$	(152,149	)	$	(144,326	)	$	(78,994	)
Foreign currency translation adjustments			(4,696	)		(7,198	)		116
Comprehensive loss		$	(156,845	)	$	(151,524	)	$	(78,878	)

See accompanying notes to consolidated financial statements.

F-8

ALPHATEC HOLDINGS, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ (DEFICIT) EQUITY

(In thousands)

	Common stock				Additional paid-in			Treasury			Accumulated other			Accumulated			Total stockholders’
	Shares		Par Value		capital			stock			comprehensive loss			deficit			(deficit) equity
Balance at December 31, 2021		99,537	$	10	$	892,828		$	(25,097	)	$	(5,994	)	$	(782,325	)	$	79,422
Stock-based compensation		—		—		37,591			—			—			—			37,591
Sales agent equity incentives		221		—		3,068			—			—			—			3,068
Common stock issued for conversion    of Series A preferred stock		29		—		—			—			—			—			—
Common stock issued for warrant exercises		3,820		1		4,159			—			—			—			4,160
Common stock issued for employee    stock purchase plan and stock option    exercises		806		—		4,020			—			—			—			4,020
Common stock issued for vesting of    restricted stock units, net of    shares withheld for tax liability		2,204		—		(11,220	)		—			—			—			(11,220	)
Reclassification of liability-classified    awards						2,841												2,841
Common stock issued for asset acquisition		23		—		250			—			—			—			250
Foreign currency translation adjustments		—		—		—			—			(4,696	)		—			(4,696	)
Net loss		—		—		—			—			—			(152,149	)		(152,149	)
Balance at December 31, 2022		106,640	$	11	$	933,537		$	(25,097	)	$	(10,690	)	$	(934,474	)	$	(36,713	)

See accompanying notes to consolidated financial statements.

F-9

ALPHATEC HOLDINGS, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(In thousands)

	Common stock					Additional paid-in			Shareholder note			Treasury			Accumulated other			Accumulated			Total stockholders’
	Shares			Par Value		capital			receivable			stock			comprehensive income (loss)			deficit			equity
Balance at December 31, 2020		82,104		$	8	$	770,764		$	(4,000	)	$	(97	)	$	1,204		$	(637,999	)	$	129,880
Stock-based compensation		—			—		34,728			—			—			—			—			34,728
Sales agent equity incentives		164			—		1,339			—			—			—			—			1,339
Common stock issued for warrant     exercises		3,943			—		3,254			—			—			—			—			3,254
Common stock issued for employee    stock purchase plan and stock option    exercises		796			—		3,584			—			—			—			—			3,584
Common stock issued for vesting of    restricted stock units, net of    shares withheld for tax liability		1,915			—		(12,801	)		—			—			—			—			(12,801	)
Issuance of common stock for private    placement, net of offering costs    of $6,200		12,421			2		131,826			—			—			—			—			131,828
Shareholder note receivable		—			—		—			4,000			—			—			—			4,000
Repurchase of common stock		(1,806	)		—		—			—			(25,000	)		—			—			(25,000	)
Purchase of capped calls		—			—		(39,866	)		—			—			—			—			(39,866	)
Foreign currency translation adjustments		—			—		—			—			—			(7,198	)		—			(7,198	)
Net loss		—			—		—			—			—			—			(144,326	)		(144,326	)
Balance at December 31, 2021		99,537		$	10	$	892,828		$	—		$	(25,097	)	$	(5,994	)	$	(782,325	)	$	79,422

See accompanying notes to consolidated financial statements.

F-10

ALPHATEC HOLDINGS, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(In thousands)

	Common stock				Additional paid-in			Shareholder note			Treasury			Accumulated other		Accumulated			Total stockholders’
	Shares		Par Value		capital			receivable			stock			comprehensive income		deficit			equity
Balance at December 31, 2019		61,400	$	6	$	606,558		$	(5,000	)	$	(97	)	$	1,088	$	(558,924	)	$	43,631
Cumulative effect of change in    accounting principle		—		—		—			—			—			—		(81	)		(81	)
Stock-based compensation		—		—		15,730			—			—			—		—			15,730
Common stock issued for    conversion of Series A preferred stock		39		—		—			—			—			—		—			—
Sales agent equity incentives		—		—		521			—			—			—		—			521
Common stock issued for warrant exercises		1,907		—		2,368			—			—			—		—			2,368
Common stock issued for    employee stock purchase plan    and stock option exercises		665		—		1,970			—			—			—		—			1,970
Common stock issued for    vesting of restricted stock units,    net of shares withheld for tax liability		2,238		—		(983	)		—			—			—		—			(983	)
Issuance of common stock    warrants, net		—		—		2,974			—			—			—		—			2,974
Issuance of common stock for    public offering, net of offering    costs of $7,300		13,143		2		107,696			—			—			—		—			107,698
Shareholder note receivable		—		—		—			1,000			—			—		—			1,000
Issuance of common stock    for other services		12		—		123			—			—			—		—			123
Issuance of common stock for    prepayment of debt		2,700		—		33,807			—			—			—		—			33,807
Foreign currency translation adjustments		—		—		—			—			—			116		—			116
Net loss		—		—		—			—			—			—		(78,994	)		(78,994	)
Balance at December 31, 2020		82,104	$	8	$	770,764		$	(4,000	)	$	(97	)	$	1,204	$	(637,999	)	$	129,880

See accompanying notes to consolidated financial statements.

F-11

ALPHATEC HOLDINGS, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

	Year Ended December 31,
		2022			2021			2020
Operating activities:
Net loss		$	(152,149	)	$	(144,326	)	$	(78,994	)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization			41,168			26,756			10,949
Stock-based compensation			40,556			36,450			17,659
Amortization of debt discount and debt issuance costs			2,038			1,868			3,974
Amortization of right-of-use assets			2,760			3,418			683
Write-down for excess and obsolete inventories			9,792			11,147			7,044
Loss on disposal of assets			2,594			1,976			498
Loss on debt extinguishment, net			—			7,434			7,612
Impairment of investment			—			3,000			—
Other			1,187			2,721			116
Changes in operating assets and liabilities:
Accounts receivable			(18,832	)		(10,141	)		(7,484	)
Inventories			(20,704	)		(27,746	)		(18,192	)
Prepaid expenses and other current assets			552			1,258			(2,930	)
Other assets			(109	)		11			(51	)
Accounts payable			9,796			757			7,130
Accrued expenses and other current liabilities			13,508			8,023			8,812
Lease liabilities			(2,678	)		150			(1,312	)
Contract liabilities			(2,280	)		(1,040	)		—
Other long-term liabilities			(2,342	)		4,852			(1,926	)
Net cash used in operating activities			(75,143	)		(73,432	)		(46,412	)
Investing activities:
Purchases of property and equipment			(49,453	)		(68,544	)		(23,131	)
Purchase of intangible assets			(8,827	)		—			(755	)
Acquisition of business, net of cash acquired			—			(62,133	)		—
Purchase of OCEANE			—			(21,097	)		—
Cash paid for investments			—			(3,000	)		—
Settlement of forward contract			—			(2,988	)		—
Cash received from sale of assets			—			—			27
Net cash used in investing activities			(58,280	)		(157,762	)		(23,859	)
Financing activities:
Proceeds from Revolving Credit Facility and line of credit			62,500			—			42,455
Payment of debt issuance costs			(1,315	)		(10,028	)		—
Proceeds from common stock offering			—			131,828			107,698
Proceeds from issuance of convertible notes			—			316,250			—
Net cash (paid) received from common stock exercises			(3,041	)		(5,963	)		3,341
Purchase of capped calls			—			(39,866	)		—
Repurchase of common stock			—			(25,000	)		—
Proceeds from term debt			—			—			34,008
Repayment of Revolving Credit Facility and line of credit			(27,500	)		—			(56,615	)
Repayment of Squadron Medical Term Loan			—			(45,000	)		—
Repayment of Inventory Financing Agreement			—			(8,088	)		—
Other			584			(2,167	)		(58	)
Net cash provided by financing activities			31,228			311,966			130,829
Effect of exchange rate changes on cash			(357	)		(1,289	)		94
Net change in cash and cash equivalents			(102,552	)		79,483			60,652
Cash and cash equivalents at beginning of year			187,248			107,765			47,113
Cash and cash equivalents at end of year		$	84,696		$	187,248		$	107,765
Supplemental disclosure of cash flow information:
Cash paid for interest		$	3,860		$	5,027		$	6,330
Cash paid for income taxes		$	272		$	223		$	190
Supplemental disclosure of noncash investing and financing activities:
PPP Loan Forgiveness		$	—		$	4,271		$	—
Debt issuance costs		$	2,760		$	—		$	—
Financed insurance		$	1,959		$	—		$	—
Financed property and equipment		$	600		$	—		$	—
Financed inventory		$	—		$	4,015		$	—
Purchases of property and equipment in accounts payable		$	2,128		$	2,577		$	3,527
Purchases of intangible assets		$	750		$	—		$	—
Recognition of lease liability		$	1,694		$	23,403		$	—
Modification of lease liability for lease amendment		$	4,288		$	—		$	—
Common stock warrants issued with term loan draw		$	—		$	—		$	2,974
Common stock issued for partial extinguishment of debt		$	—		$	—		$	33,807

See accompanying notes to consolidated financial statements.

F-12

ALPHATEC HOLDINGS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. Organization and Significant Accounting Policies

The Company

Alphatec Holdings, Inc. (the “Company”), through its wholly owned subsidiaries, Alphatec Spine, Inc. (“Alphatec Spine”), SafeOp Surgical, Inc. (“SafeOp”), and EOS imaging S.A. (“EOS”), is a medical technology company focused on the design, development, and advancement of technology for the better surgical treatment of spinal disorders. The Company markets its products in the United States of America and internationally via a network of independent sales agents and direct sales representatives.

Basis of Presentation and Principles of Consolidation

The consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP") and include the accounts of the Company and its wholly owned subsidiaries. The Company translates the financial statements of its foreign subsidiaries using end-of-period exchange rates for assets and liabilities and average exchange rates during each reporting period for results of operations. All intercompany balances and transactions have been eliminated in consolidation. The Company operates in one reportable business segment.

Reclassification

Certain amounts in the consolidated financial statements for the years ended December 31, 2021 and 2020 have been reclassified to conform to the current year’s presentation. These reclassifications were immaterial and have no impact on previously reported results of operations or accumulated deficit.

Use of Estimates

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities, and the reported amounts of revenues and expenses. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include the useful lives of property and equipment, goodwill, intangible assets, allowances for doubtful accounts, deferred tax assets, inventory, stock-based compensation, revenues, income tax uncertainties, and other contingencies.

Concentrations of Credit Risk and Significant Customers

Financial instruments, which potentially subject the Company to concentrations of credit risk, consist primarily of cash, cash equivalents, and accounts receivable. The Company limits its exposure to credit loss by depositing its cash and investments with established financial institutions. As of December 31, 2022, a substantial portion of the Company’s available cash funds is held in business accounts. Although the Company deposits its cash with multiple financial institutions, its deposits, at times, may exceed federally insured limits.

The Company’s customers are primarily hospitals and surgical centers. No one single customer represented greater than 10 percent of consolidated revenues and accounts receivable for the years presented. Credit to customers is granted based on an analysis of the customers’ credit worthiness. Credit losses have not been significant.

Cash and Cash Equivalents

The company considers all highly liquid investments that are readily convertible into cash and have an original maturity of three months or less at the time of purchase to be cash equivalents.

F-13

Accounts Receivable, net

Accounts receivable are presented net of allowance for doubtful accounts. The Company makes judgments as to its ability to collect outstanding receivables and provides allowances for a portion of receivables when collection becomes doubtful. Provisions are made based upon a specific review of all significant outstanding invoices. In determining the provision for invoices not specifically reviewed, the Company analyzes historical collection experience. If the historical data used to calculate the allowance provided for doubtful accounts does not reflect the Company’s future ability to collect outstanding receivables or if the financial condition of customers were to deteriorate, resulting in impairment of their ability to make payments, an increase in the provision for doubtful accounts may be required.

The Company’s accounts receivable generally have net 30-day payment terms. The Company generally does not allow returns of products that have been delivered. The Company offers standard quality assurance warranty on its products. The Company had no material bad debt expense and there were no material contract assets during the years presented.

Excess and Obsolete Inventory

Most of the Company’s inventory is comprised of finished goods, which is primarily produced by third-party suppliers. Specialized implants, fixation products, biologics, and disposables are determined by utilizing a standard cost method that includes capitalized variances which approximates the weighted average cost. Imaging equipment and related parts are valued at weighted average cost. Inventories are stated at the lower of cost or net realizable value. The Company reviews the components of its inventory on a periodic basis for excess and obsolescence and adjusts inventory to its net realizable value as necessary.

The Company records a lower of cost or net realizable value (“LCNRV”) inventory reserve for estimated excess and obsolete inventory based upon its expected use of inventory on hand. The Company’s inventory, which consists primarily of specialized implants, fixation products, biologics, and disposables is at risk of obsolescence due to the need to maintain substantial levels of inventory. In order to market its products effectively and meet the demands of interoperative product placement, the Company maintains and provides surgeons and hospitals with a variety of inventory products and sizes. For each surgery, fewer than all components will be consumed. The need to maintain and provide a wide variety of inventory causes inventory to be held that is not likely to be used.

The Company’s estimates and assumptions for excess and obsolete inventory are reviewed and updated on a quarterly basis. The estimates and assumptions are determined primarily based on current usage of inventory and the age of inventory quantities on hand. Additionally, the Company considers recent sales experience to develop assumptions about future demand for its products, while considering product life cycles and new product launches. Increases in the LCNRV reserve for excess and obsolete inventory result in a corresponding charge to cost of sales. For the years ended December 31, 2022, 2021 and 2020, the Company recorded LCNRV charges for excess and obsolete inventory of $9.8 million, $11.1 million and $7.0 million, respectively, net of inventory sold of $1.5 million, $2.5 million and $1.0 million, respectively. For the years ended December 31, 2022, 2021 and 2020, the Company recorded a reduction of reserve for inventory that was disposed of $8.2 million, $2.1 million and $1.3 million, respectively.

F-14

Property and Equipment, net

Property and equipment are stated at cost, net of accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets, generally ranging from three to seven years. Leasehold improvements and assets acquired under financing leases are amortized over the shorter of their useful lives or the remaining terms of the related leases.

Operating Lease

The Company determines whether a contract is a lease or contains a lease at inception by assessing whether there is an identified asset and whether the contract conveys the right to control the use of the identified asset in exchange for consideration over a period of time. If both criteria are met, the Company determines the initial classification and measurement of its right-of-use (“ROU”) asset and lease liability at the lease commencement date and thereafter, if modified. The Company recognizes a ROU asset and lease liability for its operating leases with lease terms greater than 12 months. The lease term includes any renewal options and termination options that the Company is reasonably assured to exercise. ROU assets and lease liabilities are based on the present value of lease payments over the lease term. The present value of operating lease payments is determined by using the incremental borrowing rate of interest that the Company would borrow on a collateralized basis for an amount equal to the lease payments in a similar economic environment.

Rent expense for operating leases is recognized on a straight-line basis over the reasonably assured lease term based on the total lease payments and is included in cost of sales, research and development, and sales, general and administrative expenses in the consolidated statements of operations.

The Company aggregates all lease and non-lease components for each class of underlying assets into a single lease component and variable charges for common area maintenance and other variable costs are recognized as expense as incurred. Total variable costs associated with leases were immaterial for all years presented. The Company had an immaterial amount of financing leases as of December 31, 2022 and 2021, which is included in property and equipment, net, accrued expenses and other current liabilities, and other long-term liabilities on the consolidated balance sheets.

Valuation of Goodwill

Goodwill represents the excess of the cost over the fair value of net assets acquired from the Company’s business combinations. The determination of the value of goodwill and intangible assets arising from business combinations and asset acquisitions requires extensive use of accounting estimates and judgments to allocate the purchase price to the fair value of the net tangible and intangible assets acquired. Goodwill is assessed for impairment using fair value measurement techniques on an annual basis or more frequently if facts and circumstance warrant such a review. Goodwill is considered to be impaired if the Company determines that the carrying value of the reporting unit exceeds its respective fair value.

The Company’s annual evaluation for impairment of goodwill consists of one reporting unit. The Company completed its most recent annual evaluation for impairment of goodwill as of October 1, 2022 and determined that no impairment existed. In addition, no indicators of impairment were noted through December 31, 2022, and consequently no impairment charge was recorded during the years ended December 31, 2022, 2021 and 2020.

F-15

Valuation of Intangible Assets

Intangible assets are comprised primarily of purchased technology, customer relationships, trade name, trademarks, and in-process research and development. The Company makes significant judgments in relation to the valuation of intangible assets resulting from business combinations and asset acquisitions. Intangible assets are generally amortized on a straight-line basis over their estimated useful lives of 2 to 12 years. The Company bases the useful lives and related amortization expense on the period of time it estimates the assets will generate net sales or otherwise be used. The Company also periodically reviews the lives assigned to its intangible assets to ensure that its initial estimates do not exceed any revised estimated periods from which the Company expects to realize cash flows. If a change were to occur in any of the above-mentioned factors or estimates, the likelihood of a material change in the Company’s reported results would increase. The Company evaluates its intangible assets with finite lives for indications of impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. Factors that could trigger an impairment review include significant under-performance relative to expected historical or projected future operating results, significant changes in the manner of the Company’s use of the acquired assets or the strategy for its overall business or significant negative industry or economic trends. If this evaluation indicates that the value of the intangible asset may be impaired, the Company makes an assessment of the recoverability of the net carrying value of the asset over its remaining useful life. If this assessment indicates that the intangible asset is not recoverable, based on the estimated undiscounted future cash flows of the asset over the remaining amortization period, the Company reduces the net carrying value of the related intangible asset to fair value and may adjust the remaining amortization period. Significant judgment is required in the forecasts of future operating results that are used in the discounted cash flow valuation models. It is possible that plans may change and estimates used may prove to be inaccurate. If actual results, or the plans and estimates used in future impairment analyses, are lower than the original estimates used to assess the recoverability of these assets, the Company could incur additional impairment charges. There were no impairment charges during the years ended December 31, 2022, 2021 or 2020.

In-process research and development ("IPR&D") and software in development have indefinite lives and are not amortized until the related products reach full commercial launch or when the projects are complete and their assets are ready for their intended use. Indefinite-lived intangible assets are considered to be impaired if the products do not reach commercial launch, if the project is not completed or not completed in a timely manner, or if the related products or projects are no longer technologically feasible. Impairment related to IPR&D and software in development is calculated as the excess of the asset's carrying value over its fair value. There were no impairment charges during the years ended December 31, 2022, 2021 or 2020.

Impairment of Long-Lived Assets

The Company assesses potential impairment to its long-lived assets when there is evidence that events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. An impairment loss is recognized when estimated future undiscounted cash flows related to the asset are less than its carrying amount. Any required impairment loss is measured as the amount by which the carrying amount of a long-lived asset exceeds its fair value and is recorded as a reduction in the carrying value of the related asset and a charge to operating results. There were no material impairment charges during the years ended December 31, 2022, 2021 or 2020.

Warrants to Purchase Common Stock

Warrants are accounted for in accordance with the applicable accounting guidance as either derivative liabilities or as equity instruments depending on the specific terms of the agreements.

All warrants issued during the years ended December 31, 2022 and 2021 qualified for classification within stockholders’ equity.

F-16

Fair Value Measurements

The carrying amount of financial instruments consisting of cash and cash equivalents, accounts receivable, prepaid expenses and other current assets, accounts payable, accrued expenses, and short-term debt included in the Company’s consolidated financial statements are reasonable estimates of fair value due to their short maturities.

Authoritative guidance establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

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

Level 2: Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active; or other inputs that can be corroborated by observable market data for substantially the full term of the assets or liabilities.

Level 3: Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

Revenue Recognition

The Company recognizes revenue from product sales in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Revenue from Contracts with Customers (“Topic 606”). This standard applies to all contracts with customers, except for contracts that are within the scope of other standards, such as leases, insurance, collaboration arrangements, and financial instruments. Under Topic 606, an entity recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration that the entity expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that an entity determines are within the scope of Topic 606, the entity performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation. The Company only applies the five-step model to contracts when it is probable that the entity will collect the consideration it is entitled to in exchange for the goods or services it transfers to the customer.

F-17

Sales are derived primarily from the sale of spinal implant products, imaging equipment, and related services to hospitals and medical centers through direct sales representatives and independent sales agents. Revenue is recognized when obligations under the terms of a contract with customers are satisfied, which occurs with the transfer of control of products to customers, either upon shipment of the product or delivery of the product to the customer depending on the shipping terms, or when the products are used in a surgical procedure (implanted in a patient). Revenue from the sale of imaging equipment is recognized as each distinct performance obligation is fulfilled and control transfers to the customer, beginning with shipment or delivery, depending on the terms. Revenue from other distinct performance obligations, such as maintenance on imaging equipment and other imaging related services, is recognized in the period the service is performed, and makes up less than 10% of the Company’s total revenue. Revenue is measured based on the amount of consideration expected to be received in exchange for the transfer of the goods or services specified in the contract with each customer. In certain cases, the Company does offer the ability for customers to lease its imaging equipment primarily on a non-sales type basis, but such arrangements are immaterial to total revenue in the periods presented. The Company generally does not allow returns of products that have been delivered. Costs incurred by the Company associated with sales contracts with customers are deferred over the performance obligation period and recognized in the same period as the related revenue, except for contracts that complete within one year or less, in which case the associated costs are expensed as incurred. Payment terms for sales to customers may vary but are commensurate with the general business practices in the country of sale.

To the extent that the transaction price includes variable consideration, such as discounts, rebates, and customer payment penalties, the Company estimates the amount of variable consideration that should be included in the transaction price utilizing either the expected value method or the most likely amount method depending on the nature of the variable consideration. Variable consideration is included in the transaction price if, in the Company’s judgment, it is probable that a significant future reversal of cumulative revenue under the contract will not occur. Estimates of variable consideration and determination of whether to include estimated amounts in the transaction price are based largely on an assessment of the Company’s anticipated performance and all information that is reasonably available, including historical, current, and forecasted information.

The Company records a contract liability, or deferred revenue, when it has an obligation to provide a product or service to the customer and payment is received in advance of its performance. When the Company sells a product or service with a future performance obligation, revenue is deferred on the unfulfilled performance obligation and recognized over the related performance period. Generally, the Company does not have observable evidence of the standalone selling price related to its future service obligations; therefore, the Company estimates the selling price using an expected cost plus a margin approach. The transaction price is allocated using the relative standalone selling price method. The use of alternative estimates could result in a different amount of revenue deferral.

Research and Development Expenses

Research and development costs are expensed as incurred. Research and development expenses consist of costs associated with the design, development, testing, and enhancement of the Company's products. Research and development expenses also include salaries and related employee benefits, research-related overhead expenses, fees paid to external service providers and development consultants in the form of both cash and equity.

Transaction-related Expenses

Transaction-related costs are expensed as incurred. Transaction-related expenses consist of certain costs incurred related primarily to the acquisition and integration of EOS.

Product Shipment Cost

Product shipment costs for surgical sets are included in sales, general and administrative expenses in the accompanying consolidated statements of operations. Product shipment costs totaled $14.8 million, $8.3 million and $5.3 million for the years ended December 31, 2022, 2021 and 2020 respectively.

F-18

Stock-Based Compensation

Stock-based compensation expense for equity-classified awards, principally related to restricted stock units ("RSUs") and performance restricted stock units ("PRSUs") is measured at the grant date based on the estimated fair value of the award. The fair value of equity instruments that are expected to vest is recognized and amortized over the requisite service period. The Company has granted awards with up to four year graded or cliff vesting terms. No exercise price or other monetary payment is required for receipt of the shares issued in settlement of the respective award; instead, consideration is furnished in the form of the participant’s service.

The fair value of RSUs including PRSUs with pre-defined performance criteria is based on the stock price on the date of grant whereas the expense for PRSUs with pre-defined performance criteria is adjusted with the probability of achievement of such performance criteria at each period end. The fair value of the PRSUs that are earned based on the achievement of pre-defined market conditions, is estimated on the date of grant using a Monte Carlo valuation model. The key assumptions in applying this model are an expected volatility, risk-free interest rate and the probability of the performance criteria being met.

Stock-based compensation recorded in the Company’s consolidated statements of operations is based on awards expected to ultimately vest and has been reduced for estimated forfeitures. The Company’s estimated forfeiture rates may differ from its actual forfeitures. The Company considers its historical experience of pre-vesting forfeitures on awards by each homogenous group of employees as the basis to arrive at its estimated annual pre-vesting forfeiture rates.

The Company estimates the fair value of stock options issued under the Company’s equity incentive plans and shares issued to employees under the Company’s employee stock purchase plan (“ESPP”) using a Black-Scholes option-pricing model on the date of grant. The Black-Scholes option-pricing model incorporates various assumptions including expected volatility, expected term and risk-free interest rates. The expected volatility is based on the historical volatility of the Company’s common stock over the most recent period commensurate with the estimated expected term of the Company’s stock options and ESPP offering period which is derived from historical experience. The risk-free interest rate for periods within the contractual life of the option is based on the United States ("U.S.") Treasury yield in effect at the time of grant. The Company has never declared or paid dividends and has no plans to do so in the foreseeable future.

The Company accounts for stock option grants to non-employees in accordance with provisions which require that the fair value of these instruments be recognized as an expense over the period in which the related services are rendered.

Income Taxes

The Company accounts for income taxes in accordance with provisions which set forth an asset and liability approach that requires the recognition of deferred tax assets and deferred tax liabilities for the expected future tax consequences of temporary differences between the carrying amounts and the tax bases of assets and liabilities. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized. In making such determination, a review of all available positive and negative evidence must be considered, including scheduled reversal of deferred tax liabilities, projected future taxable income, tax planning strategies, and recent financial performance.

The Company recognizes interest and penalties related to uncertain tax positions as a component of the income tax provision.

F-19

Net Loss per Share

Basic net loss per share is calculated by dividing the net loss available to common stockholders by the weighted-average number of common shares outstanding for the period. If applicable, diluted net loss per share attributable to common stockholders is calculated by dividing net loss available to common stockholders by the diluted weighted-average number of common shares outstanding for the period determined using the treasury-stock method and the if-converted method for convertible debt. For purposes of this calculation, common stock subject to repurchase by the Company, common stock issuable upon conversion or exercise of convertible notes, preferred shares, options, and warrants are considered to be common stock equivalents and are only included in the calculation of diluted earnings per share when their effect is dilutive. Due to the Company’s net loss position, the effect of including common stock equivalents in the earnings per share calculation is anti-dilutive, and therefore not included.

The following table sets forth the computation of basic and diluted loss per share (in thousands, except per share data):

	Year Ended December 31,
	2022			2021			2020
Numerator:
Net loss	$	(152,149	)	$	(144,326	)	$	(78,994	)
Denominator:
Weighted average common shares outstanding		103,373			96,197			67,020
Net loss per share, basic and diluted	$	(1.47	)	$	(1.50	)	$	(1.18	)

The following potentially dilutive shares of common stock were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive for the years presented (in thousands):

	Year Ended December 31,
	2022		2021		2020
Series A convertible preferred stock		—		29		29
Options to purchase common stock and employee stock purchase plan		2,991		3,416		3,951
Unvested restricted stock units		8,533		8,703		8,216
Warrants to purchase common stock		15,491		20,184		24,881
Senior convertible notes		17,246		17,246		—
		44,261		49,578		37,077

Recent Accounting Pronouncements

Recently Issued Accounting Pronouncements

In August 2021, the FASB issued ASU No. 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers. The guidance requires application of ASC 606, “Revenue from Contracts with Customers” to recognize and measure contract assets and contract liabilities acquired in a business combination. ASU No. 2021-08 adds an exception to the general recognition and measurement principle in ASC 805 where assets acquired and liabilities assumed in a business combination, including contract assets and contract liabilities arising from contracts with customers, are measured at fair value on the acquisition date. Under the new guidance, the acquirer will recognize acquired contract assets and contract liabilities as if the acquirer had originated the contract. The standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2022, with early adoption permitted. The Company does not intend to early adopt the standard and is in the process of assessing the impact, if any, on its consolidated financial statements and related disclosures.

F-20

2. Business Combination

The Company recognizes assets acquired, liabilities assumed, and any noncontrolling interest at fair value at the date of acquisition.

On December 16, 2020, the Company entered into a Tender Offer Agreement with EOS, pursuant to which the Company agreed to commence a public tender offer (the “Offer”) to purchase all of the issued and outstanding ordinary shares, nominal value €0.01 per share (collectively, the “EOS Shares”), for a cash offer of €2.45 per EOS Share, and outstanding convertible bonds of EOS (“OCEANEs”) for a cash offer of €7.01 per OCEANE, which included accrued but unpaid interest. On May 13, 2021 (the “Change in Control Date”), the Company substantially completed the Offer, pursuant to which the Company purchased 59% of the issued and outstanding EOS Shares and 53% of the OCEANEs for $66.5 million in cash pursuant to the Offer. In addition, prior to the Change in Control Date, the Company had also acquired 30% of the issued and outstanding EOS Shares and 4% of the OCEANEs on the open market for $25.0 million in cash. After the Change in Control Date, the Company held a controlling financial interest in EOS representing 89% of issued and outstanding EOS Shares and 57% of OCEANEs, equal to approximately 80% of the capital and voting rights of EOS on a fully diluted basis. The Offer was reopened on May 17, 2021 to purchase the remaining EOS Shares for $8.5 million, ultimately resulting in the acquisition of 100% of EOS Shares and 57% of the OCEANEs as of June 2, 2021. The total cash paid to acquire 100% of the EOS Shares and 57% of the OCEANEs was $100.0 million.

EOS, which now operates as a wholly owned subsidiary of the Company, is a global medical device company that designs, develops and markets innovative, low dose 2D/3D full body and biplanar weight-bearing imaging, rapid 3D modeling of EOS patient X-ray images, web-based patient-specific surgical planning, and integration of surgical plan into the operating room that collectively bridge the entire spectrum of care from imaging to post-operative assessment capabilities for orthopedic surgery. The Company plans to integrate this technology into its procedural approach to spine surgery to better inform and better achieve spinal alignment objectives in surgery.

F-21

During the year ended December 31, 2022, the Company recorded a purchase accounting adjustment primarily related to deferred tax assets, which resulted in a $1.6 million increase to goodwill. The Company has completed its estimate of the fair value of the purchase consideration, the assets acquired, and the liabilities assumed. Accordingly, the Company has allocated the purchase consideration as follows:

(in thousands)	As of May 13, 2021
Cash paid for purchase of EOS Shares at Change in Control Date	$	46,908
Cash paid for purchase of OCEANEs at Change in Control Date		19,620
Total cash paid at Change in Control Date		66,528
Fair value of investment in EOS Shares held prior to Change in    Control Date		23,549
Fair value of investment in OCEANEs held prior to Change in    Control Date		1,477
Total fair value of investment in EOS held prior to Change in    Control Date		25,026
Fair value of noncontrolling interest acquired after Change in    Control Date		8,454
	$	100,008
Cash and cash equivalents	$	16,778
Accounts receivable		9,083
Inventory		26,681
Other current assets		4,422
Property, plant and equipment, net		1,650
Deferred tax assets		536
Right-of-use assets		4,341
Goodwill		29,469
Definite-lived intangible assets:
Developed technology		56,000
Customer relationships		9,500
Trade names		6,000
Other noncurrent assets		395
Contract liabilities		21,196
Long-term debt		15,297
Other liabilities assumed		28,354
Total identifiable net assets	$	100,008

The purchase price, including cash paid at the Change in Control Date, the fair value of the investment held prior to the Change in Control Date, and the fair value of the noncontrolling interest acquired after the Change in Control Date, exceeded the fair value of the net tangible and identifiable intangible assets acquired as part of the acquisition. As a result, the Company recorded goodwill in connection with the acquisition. Goodwill primarily consists of expected revenue synergies resulting from the combination of product portfolios and cost synergies related to elimination of redundant facilities and functions associated with the combined entity. Goodwill recognized in this transaction is not deductible for tax purposes. The intangible assets acquired will be amortized on a straight-line basis over useful lives of ten years, seven years and ten years for technology-based, customer-related and trade name related intangible assets, respectively. The estimated fair values of the intangible assets acquired were primarily determined using the income approach based on significant inputs that were not observable in the market.

Acquisition costs of $5.8 million were recognized during the year ended December 31, 2021, as transaction-related expenses on the consolidated statements of operations as incurred. No such costs were recognized during the year ended December 31, 2022. The Company’s results of operations for the year ended December 31, 2021 included the operating results of EOS of $30.0 million of revenue and a net loss of $17.6 million in the consolidated statement of operations.

F-22

The following table presents the results of the year ended December 31, 2022 and the unaudited pro forma results for the year ended December 31, 2021, which combines the historical results of operations of the Company and its wholly owned subsidiaries as though the companies had been combined as of January 1, 2020. The pro forma information is presented for informational purposes only and is not indicative of the results of operations that may have been achieved if the acquisition had taken place at such time. The unaudited pro forma results presented include non-recurring adjustments directly attributable to the business combination, including $7.3 million in amortization charges for acquired intangible assets and $10.8 million in acquisition related expenses. The unaudited pro forma results include IFRS to U.S. GAAP adjustments for EOS historical results and adjustments for accounting policy alignment, which were materially similar to the Company. Any differences in accounting policies were adjusted to reflect the accounting policies of the Company in the unaudited pro forma results presented.

	Year Ended December 31,
(in thousands, except per share amounts)	2022			2021
Total revenue	$	350,867		$	251,906
Net loss		(152,149	)		(140,441	)
Net loss per share, basic and diluted	$	(1.47	)	$	(1.46	)

3. Fair Value Measurements

Assets and liabilities measured at fair value on a recurring basis include the following as of December 31, 2022, and December 31, 2021 (in thousands):

	December 31, 2022
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	62,956		—		—	$	62,956
Total cash equivalents	$	62,956		—		—	$	62,956
	December 31, 2021
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	140,010		—		—	$	140,010
Total cash equivalents	$	140,010		—		—	$	140,010
Liability classified equity award	$	—		—		2,052	$	2,052

The Company did not have any transfers of assets and liabilities between the levels of the fair value measurement hierarchy during the periods presented.

On March 16, 2021, the Company entered into two foreign currency forward contracts, with a notional amount of $8.0 million total, $4.0 million each (€6.7 million total and €3.3 million each), to mitigate the foreign currency exchange risk related to its EOS subsidiary. The contracts are not designated as hedging instruments. The Company classified the derivative liabilities within Level 2 of the fair value hierarchy as observable inputs are available for the full term of the derivative instruments. The fair value of the forward contracts was developed using a market approach based on publicly available market yield curves and the term of the contracts. During the year ended December 31, 2021, the foreign currency forward contracts were settled for $7.6 million (€6.7 million). The Company recognized a nominal loss from the change in fair value of the contracts during the year ended December 31, 2021. The loss on the contract settlement was recorded within other expense, net on the consolidated statements of operations and the cash settlement is included in investing activities in the consolidated statements of cash flows for the year ended December 31, 2021.

F-23

On December 18, 2020, the Company entered into a foreign currency forward contract, with a notional amount of $117.9 million (€95.6 million) to mitigate the foreign currency exchange risk related to the Tender Offer Agreement, denominated in Euros. The contract was not designated as a hedging instrument. The Company classified the derivative liability within Level 2 of the fair value hierarchy as observable inputs were available for the full term of the derivative instrument. The fair value of the forward contract was developed using a market approach based on publicly available market yield curves and the term of the contract. On March 2, 2021, the foreign currency forward contract was settled for $115.3 million (€95.6 million). The Company recognized a $1.7 million and $0.9 million loss from the change in fair value of the contract during the years ended December 31, 2021 and 2020, respectively. The loss on the contract settlement was recorded as other expense on the consolidated statement of operations and the cash settlement is included in investing activities in the consolidated statements of cash flows for the year ended December 31, 2021.

In 2019, the Company issued a liability classified equity award to one of its executive officers. As the award was required to be settled in cash, it was classified as a liability on the consolidated balance sheets for the year ended December 31, 2021. The award was classified within Level 3 of the fair value hierarchy as the Company used a probability-weighted income approach, utilizing significant unobservable inputs including the probability of achieving the specific market condition with the valuation updated at each reporting period.

On November 2, 2022, the award was amended to be paid in shares of the Company's common stock. As a result of the amendment, the award is classified as equity in the consolidated balance sheets for the year ended December 31, 2022. The award vests in 2023 subject to continued service and a specific market condition. The Company used a probability-weighted income approach, utilizing significant unobservable inputs including the probability of achieving the specific market condition, to determine the fair value of the award after the amendment of approximately $3.0 million. The previously recognized liability was reclassified to additional paid-in capital and the unrecognized compensation costs will be amortized ratably over the remaining term of the award.

The following table provides a reconciliation of liabilities measured at fair value using significant unobservable inputs (Level 3) as of December 31, 2022 (in thousands):

	Level 3 Liabilities
Balance at December 31, 2020	$	1,668
Straight-line recognition of liability classified equity award		1,028
Change in fair value measurement		(644	)
Balance at December 31, 2021	$	2,052
Straight-line recognition of liability classified equity award		483
Change in fair value measurement		(586	)
Reclassification to equity classified award		(1,949	)
Balance at December 31, 2022	$	—

Fair Value of Convertible Debt

The fair value, based on a quoted market price (Level 1), of the Company’s outstanding 0.75% Convertible Senior Notes due 2026 (the "2026 Notes") was approximately $288.8 million at December 31, 2022 and approximately $308.1 million at December 31, 2021. The fair value, based on a quoted market price (Level 1), of the Company’s outstanding OCEANEs was approximately $13.3 million at December 31, 2022 and approximately $14.1 million at December 31, 2021. See Note 6 for further information.

F-24

4. Balance Sheet Details

Inventories

Inventories consist of the following (in thousands):

	December 31,
	2022		2021
Raw materials	$	13,928	$	14,671
Work-in-process		3,032		5,712
Finished goods		84,561		71,320
Inventories	$	101,521	$	91,703

Property and Equipment, net

Property and equipment, net consist of the following (in thousands, except as indicated):

	Useful Life	December 31,
	(in years)	2022			2021
Surgical instruments	4	$	158,906		$	130,432
Machinery and equipment	7		9,502			11,092
Computer equipment	3		4,753			5,694
Office furniture and equipment	5		4,760			3,861
Leasehold improvements	various		2,965			1,754
Construction in progress	n/a		15,360			7,292
			196,246			160,125
Less: accumulated depreciation			(94,294	)		(72,724	)
Property and equipment, net		$	101,952		$	87,401

Total depreciation expense was $31.0 million, $20.3 million and $9.2 million for the years ended December 31, 2022, 2021 and 2020 respectively. At December 31, 2022 and 2021, assets recorded under financing leases of $0.4 million were included in the machinery and equipment balance. Amortization of assets under financing leases is included in depreciation expense.

Goodwill

The change in the carrying amount of goodwill during the year ended December 31, 2022 included the following (in thousands):

December 31, 2021	$	39,689
Purchase price allocation adjustment		1,628
Foreign currency fluctuation		(1,542	)
December 31, 2022	$	39,775

F-25

Intangible Assets, net

Intangible assets, net consist of the following (in thousands, except as indicated):

	Remaining Weighted Avg. Useful Life	Gross		Accumulated			Intangible
December 31, 2022:	(in years)	Amount		Amortization			Assets, net
Developed product technology	7	$	75,896	$	(13,420	)	$	62,476
Trademarks and trade names	8		5,421		(987	)		4,434
Customer relationships	4		14,240		(6,906	)		7,334
Distribution network	2		2,413		(2,041	)		372
Total amortized intangible assets			97,970		(23,354	)		74,616
Software in development	n/a		2,503					2,503
In-process research and development	n/a		5,662					5,662
Total intangible assets		$	106,135	$	(23,354	)	$	82,781
		.
	Remaining Weighted Avg. Useful Life	Gross		Accumulated			Intangible
December 31, 2021:	(in years)	Amount		Amortization			Assets, net
Developed product technology	12	$	74,543	$	(5,768	)	$	68,775
Trademarks and trade names	10		5,732		(477	)		5,255
Customer relationships	5		14,732		(5,264	)		9,468
Distribution network	3		2,413		(1,840	)		573
Total amortized intangible assets			97,420		(13,349	)		84,071
In-process research and development	n/a		1,203					1,203
Total intangible assets		$	98,623	$	(13,349	)	$	85,274

During the year ended December 31, 2021, in connection with the expiration and termination of the product manufacture and supply agreement (the “Supply Agreement”) with Globus Medical Ireland, Ltd., a subsidiary of Globus Medical, Inc., and its affiliated entities (collectively “Globus Medical”), the Company wrote off $32.6 million in fully amortized intangible assets. During the year ended December 31, 2021, in connection with the Company’s acquisition of EOS, as further described in Note 2, the Company recorded additions to definite-lived intangible assets in the amount of $71.5 million.

Total expense related to amortization of intangible assets was $10.2 million, $6.4 million and $1.8 million for the years ended December 31, 2022, 2021 and 2020, respectively. Software in development assets begin amortizing when the projects are complete and the assets are ready for their intended use. In-process research and development assets begin amortizing when the related products reach full commercial launch.

Future amortization expense related to intangible assets as of December 31, 2022 is as follows (in thousands):

Year Ending December 31,
2023	$	12,402
2024		12,300
2025		10,811
2026		10,811
2027		8,939
Thereafter		19,353
Total	$	74,616

F-26

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consist of the following (in thousands):

	December 31,
	2022		2021
Payroll and payroll related	$	19,764	$	18,449
Commissions and sales milestones		17,444		12,420
Accrued legal expenses		8,345		4,290
Royalties		4,758		3,466
Orthotec litigation settlement obligation		3,968		4,400
Inventory in -transit		3,548		2,089
Debt issuance costs		2,690		—
Administration fees		1,912		1,698
Other taxes payable		1,955		3,004
Professional fees		1,238		394
Interest		1,122		1,045
Other		5,638		4,294
Total accrued expenses and other current liabilities	$	72,382	$	55,549

Other Long-Term Liabilities

Other long-term liabilities consist of the following (in thousands):

	December 31,
	2022		2021
Royalties	$	5,739	$	5,833
Orthotec litigation settlement obligation		—		3,587
Income tax-related liabilities		980		1,522
Contract liabilities		3,047		2,897
Other		1,777		3,222
Other long-term liabilities	$	11,543	$	17,061

F-27

5. Contract Liabilities

The Company had current and non-current contract liabilities totaling $12.0 million and 3.0 million, respectively, as of December 31, 2022. The Company had current and non-current contract liabilities totaling $15.3 million and $2.9 million, respectively, as of December 31, 2021. The non-current contract liabilities balance is included in other long-term liabilities on the consolidated balance sheets. Contract liabilities relates to contracts with customers for which partial or complete payment of the transaction price has been received from the customer and the related obligations must be completed before revenue can be recognized. These amounts primarily relate to undelivered equipment, services, or maintenance agreements. The Company recognized $21.6 million of revenue from its contract liabilities during the year ended December 31, 2022, of which $12.9 million was recognized from the beginning contract liabilities balance. The Company recognized $14.6 million of revenue from its contract liabilities during the years ended December 31, 2021. There were no contract liabilities recognized during the year ended December 31, 2020. The opening and closing balances of the Company’s contract liabilities are as follows (in thousands):

Balance at December 31, 2021	$	18,151
Payments received		19,494
Revenue recognized		(21,581	)
Foreign currency fluctuation		(1,061	)
Balance at December 31 2022	$	15,003

6. Debt

Revolving Credit Facility

In September 2022, the Company entered into a revolving credit facility (the “Revolving Credit Facility”) with entities affiliated with MidCap Financial Trust (“MidCap”). The Revolving Credit Facility provides up to $50.0 million in borrowing capacity to the Company based on a borrowing base. The borrowing base is calculated based on certain accounts receivable and inventory assets. The Company may request a $25.0 million increase in the Revolving Credit Facility for a total commitment of up to $75.0 million. The Revolving Credit Facility matures on the earlier of September 29, 2027, or 90 days prior to the final maturity date of the Company’s 2026 Notes, as defined below. As of December 31, 2022, the outstanding balance under the Revolving Credit Facility was $35.3 million. In January 2023, the Company repaid $27.5 million of the outstanding balance.

In conjunction with obtaining the Revolving Credit Facility, the Company incurred $1.4 million in debt issuance costs. These costs were capitalized to other assets on the consolidated balance sheets and are being amortized over the life of the Revolving Credit Facility. As of December 31 2022, debt issuance costs, net of accumulated amortization, associated with the Revolving Credit Facility were $1.3 million.

The outstanding loans bear interest at the sum of Term Secured Overnight Financing Rate, a rate per annum equal to the secured overnight financing rate for such SOFR business day ("SOFR"), plus 3.5% per annum. The interest rate as of December 31, 2022 was 7.7%. The loan agreements include an unused line fee, which is calculated as 0.5% per annum of either the unused Revolving Credit Facility or a minimum balance. Interest and unused line fees incurred are due and capitalized to the outstanding principal balance monthly. The Company recognized interest expense on the Revolving Credit Facility of $0.2 million during the year ended December 31, 2022, which includes $0.1 million for the amortization of debt issuance costs. Upon the Revolving Credit Facility’s maturity, any outstanding principal balance, unpaid accrued interest, and all other obligations under the Revolving Credit Facility will be due and payable.

The Revolving Credit Facility contains a lockbox arrangement clause requiring the Company to maintain a lockbox bank account. If the revolving loan availability is less than 30% of the revolving loan limit for five consecutive business days, or the Company is in default, MidCap will apply funds collected from the Company's lockbox account to reduce the outstanding balance of the Revolving Credit Facility. As of December 31, 2022, the Company's loan availability level has not activated lockbox deductions, nor is it expected to for the next 12 months; therefore, the Company has determined that the outstanding balance under the Revolving Credit Facility is long-term debt on the consolidated balance sheets.

F-28

The outstanding loans are secured by substantially all of the Company’s assets with the priority interest of the lenders subject to terms of a customary intercreditor agreement in connection with the term loan described in Note 14, Subsequent Events. The loan agreements and other ancillary documents contain customary representations and warranties and affirmative and negative covenants. Under the loan agreements, the Company is required to maintain a minimum level of liquidity. The loan agreements also include certain events of default, and upon the occurrence of such events of default, all outstanding loans under the Revolving Credit Facility may be accelerated and/or the lenders’ commitments terminated. The Company is in compliance with all required financial covenants as of December 31, 2022.

0.75% Convertible Senior Notes due 2026

In August 2021, the Company issued $316.3 million aggregate principal amount of unsecured 2026 Notes with a stated interest rate of 0.75% and a maturity date of August 1, 2026. Interest on the 2026 Notes is payable semi-annually in arrears on February 1 and August 1 of each year, beginning on February 1, 2022. The net proceeds from the sale of the 2026 Notes were approximately $306.2 million after deducting the initial purchasers’ offering expenses and before cash used for the privately negotiated capped call transactions (the "Capped Call Transactions"), as described below, the repurchase of stock, as described in Note 9, and the repayment of the outstanding unsecured term loan with Squadron Medical Finance Solutions, LLC (the “Squadron Medical Term Loan") and outstanding obligation under the Inventory Financing Agreement, as described below. The 2026 Notes do not contain any financial covenants.

The 2026 Notes are convertible into shares of the Company’s common stock based upon an initial conversion rate of 54.5316 shares of the Company’s common stock per $1,000 principal amount of 2026 Notes (equivalent to an initial conversion price of approximately $18.34 per share). The conversion rate will be subject to adjustment upon the occurrence of certain specified events, including certain distributions and dividends to all or substantially all of the holders of the Company’s common stock. Based on the terms of the 2026 Notes, when a conversion notice is received, the Company has the option to pay or deliver cash, shares of the Company’s common stock, or a combination thereof.

Holders of the 2026 Notes have the right to convert their notes in certain circumstances and during specified periods. Prior to the close of business on the business day immediately preceding February 2, 2026, holders may convert all or a portion of their 2026 Notes only under the following circumstances: (1) during any calendar quarter (and only during such calendar quarter) commencing after the calendar quarter ending on September 30, 2021, if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; (2) during the 5 consecutive business days immediately after any 10 consecutive trading day period (the “measurement period”) in which the trading price per $1,000 principal amount of 2026 Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate on each such trading day; or (3) upon the occurrence of specified corporate events. From and after February 2, 2026, holders of the 2026 Notes may convert their notes at any time at their election until the close of business on the second scheduled trading day immediately before the maturity date. As of December 31, 2021, none of the conditions permitting the holders of the 2026 Notes to convert have been met. The 2026 Notes are classified as long-term debt on the consolidated balance sheets as of December 31, 2022.

The 2026 Notes are redeemable, in whole or in part, at the Company’s option at any time, and from time to time, on or after August 6, 2024 and on or before the 40th scheduled trading day immediately before the maturity date, at a cash redemption price equal to the principal amount of the 2026 Notes to be redeemed, plus accrued and unpaid interest, if any, but only if the last reported sale price per share of the Company’s common stock exceeds 130% of the conversion price for a specified period of time. In addition, calling any of the notes for redemption will constitute a “make-whole fundamental change” with respect to that note, in which case the conversion rate applicable to the conversion of that note will be increased in certain circumstances if such note is converted after it is called for redemption.

If a fundamental change occurs prior to the maturity date, holders may require the Company to repurchase all or a portion of their 2026 Notes for cash at a price equal to 100% of the principal amount of the 2026 Notes plus accrued and unpaid interest. No principal payments are otherwise due on the 2026 Notes prior to maturity.

F-29

The Company recorded the full principal amount of the 2026 Notes as a long-term liability net of deferred issuance costs. The annual effective interest rate for the 2026 Notes is 1.4%. The Company recognized interest expense on the 2026 Notes of $4.4 million and $1.7 million during the years ended December 31, 2022 and 2021, respectively, which includes $2.0 million and $0.8 million for the amortization of debt issuance costs during the years ended December 31, 2022 and 2021, respectively. The Company uses the if-converted method for assumed conversion of the 2026 Notes to compute the weighted average shares of common stock outstanding for diluted earnings per share, if applicable.

The outstanding principal amount and carrying value of the 2026 Notes consist of the following (in thousands):

	December 31, 2022
Principal	$	316,250
Unamortized debt issuance costs		(7,290	)
Net carrying value	$	308,960

Capped Call Transactions

In connection with the offering of the 2026 Notes, the Company entered into the Capped Call Transactions with certain financial institutions. The Capped Call Transactions are expected generally to reduce the potential dilution and/or offset the cash payments the Company is required to make in excess of the principal amount of the 2026 Notes upon conversion of the 2026 Notes in the event that the market price per share of the Company’s common stock is greater than the strike price of the Capped Call Transactions with such reduction and/or offset subject to a cap. The Capped Call Transactions have an initial cap price of $27.68 per share of the Company’s common stock, which represents a premium of 100% over the last reported sale price of the Company’s common stock on August 5, 2021, and is subject to certain adjustments under the terms of the Capped Call Transactions. Collectively, the Capped Call Transactions cover, initially, the number of shares of the Company’s common stock underlying the 2026 Notes, subject to anti-dilution adjustments substantially similar to those applicable to the 2026 Notes. The cost of the Capped Call Transactions was approximately $39.9 million.

The Capped Call Transactions are separate transactions and are not part of the terms of the 2026 Notes and will not affect any holder’s rights under the notes. Holders of the 2026 Notes will not have any rights with respect to the Capped Call Transactions.

The Capped Call Transactions meet all of the applicable criteria for equity classification and, as a result, the related $39.9 million cost was recorded as a reduction to additional paid-in capital on the Company’s consolidated statements of shareholders’ (deficit) equity for the year ended December 31, 2021.

OCEANE Convertible Bonds

On May 31, 2018, EOS issued 4,344,651 OCEANEs, denominated in Euros, due May 2023 for aggregate gross proceeds of $34.3 million (€29.5 million). The OCEANEs are unsecured obligations of EOS, rank equally with all other unsecured and unsubordinated obligations of EOS, and pay interest at a rate equal to 6% per year, payable semiannually in arrears on May 31 and November 30 of each year, beginning November 30, 2018. Unless either earlier converted or repurchased, the OCEANEs will mature on May 31, 2023. Interest expense was $0.8 million for the year ended December 31, 2022 and $0.7 million from the date of the EOS acquisition to December 31, 2021.

F-30

As discussed in Note 2, in connection with the Offer to acquire EOS, the Company purchased 2,486,135 OCEANEs, and as such, 1,858,516 OCEANEs with a principal amount of $15.3 million (€12.6 million) remained outstanding at the time of acquisition.

The OCEANEs are convertible by their holders into new EOS Shares or exchangeable for existing EOS Shares, at the Company’s option, at an initial conversion rate of one share per OCEANE, and the initial conversion rate is subject to customary anti-dilution adjustments. The OCEANEs are convertible at any time until the seventh business day prior to maturity or seventh business day prior to an earlier redemption of the OCEANE. If the number of shares calculated is not a whole number, the holder may request allocation of either the whole number of shares immediately below the number and receive an amount in cash equal to the remaining fractional share value, or the whole number of shares immediately above the number and pay an amount in cash equal to the remaining fractional share value. Holders of the OCEANEs have the option to convert all or any portion of such OCEANEs, regardless of any conditions, at any time until the close of seventh business day immediately preceding the maturity date.

EOS has a right to redeem all of the OCEANEs at its option any time after June 20, 2021 at a cash redemption price equal to the par value of the OCEANEs plus accrued and unpaid interest if the product of the volume-weighted-average price of the shares and the conversion ratio as specified in the agreement in effect on each trading day exceeds 150% of the par value of each OCEANE on each of at least twenty consecutive trading days during any forty consecutive trading days, if EOS redeems the OCEANEs when the number of OCEANEs outstanding is 15% or less of the number of OCEANEs originally issued, or the occurrence of a tender or exchange offer. As a result of the Company’s acquisition of EOS, the OCEANEs are now convertible into new shares of EOS, as a wholly-owned subsidiary of the Company. OCEANE holders can redeem the notes upon the occurrence of an event of default or upon the occurrence of a change of control. In July 2021, in connection with the change of control, holders of 25,971 OCEANEs chose to redeem their bonds for approximately $0.2 million (€0.2 million).

The carrying value of the outstanding OCEANEs was $13.3 million (€12.5 million) as of December 31, 2022.

Other Debt Agreements

In January and April 2021, prior to the acquisition, EOS obtained two loan agreements, denominated in Euros, under French government sponsored COVID-19 relief initiatives (pret garanti par l’etat or “PGE” loans). Each loan contains a 12-month term and 90% of the principal balance of each loan is state guaranteed. The cost of the state guaranty is 0.25% of the loan amounts. The loans carry an interest-free rate from the commercial banks (€3.3 million) and a 1.75% interest from the lender (€1.5 million). The loan capital and loan guaranty costs are payable in full at the end of the 12-month term or the loan may be extended up to 5 additional years. If the Company chooses to extend the debt, the election must be made by the Company between months 8 and 11 of the 12-month term. The extension will carry an interest rate at the banks’ refinancing cost, to be applied from year 2 to year 6 and an increased state guaranty cost (50 to 200 bps, as per a scale with company size and extension year).

In February 2022, the Company extended the maturity for each loan agreement to 2027. Each loan has a 12-month period from the applicable extension date where interest only payments will occur (the “Interest Only Period”). Following the Interest Only Period, monthly and quarterly installments of principal and interest under each loan agreement will be due until the original principal amounts and applicable interest is fully repaid in 2027. The outstanding obligation under each loan as of December 31, 2022 was $3.5 million and $1.6 million (€3.3 million and €1.5 million) at weighted average interest rates of 0.98% and 1.25%, respectively, and weighted average costs of the state guaranty of 0.69% and 1.00%, respectively.

F-31

Debt consists of the following (in thousands):

	December 31,
	2022			2021
2026 Notes	$	316,250		$	316,250
OCEANEs		13,333			14,113
Other notes payable		1,869			386
EOS PGE Loans		5,046			5,341
Revolving Credit Facility		35,251			—
Total		371,749			336,090
Less: debt discount		(7,290	)		(9,259	)
Total		364,459			326,831
Less: current portion of long-term debt		(14,948	)		(342	)
Total long-term debt, net of current portion	$	349,511		$	326,489

Principal payments on debt are as follows as of December 31, 2022 (in thousands):

2023	$	14,957
2024		1,731
2025		1,693
2026		317,513
2027		35,855
Total		371,749
Less: debt discount		(7,290	)
Total		364,459
Less: current portion of long-term debt		(14,948	)
Long-term debt, net of current portion	$	349,511

Paycheck Protection Loan

On April 23, 2020, the Company received the proceeds from a loan in the amount of $4.3 million (the “PPP Loan”) from Silicon Valley Bank, as lender, pursuant to the Paycheck Protection Program (“PPP”) of the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”). The Company used the loan proceeds for purposes consistent with the terms of the PPP and applied for forgiveness of the entire $4.3 million loan balance, which was granted in July 2021. The Company recorded a gain on debt extinguishment of $4.3 million, which is included in loss on debt extinguishment, net, on the consolidated statements of operations for the year ended December 31, 2021.

Squadron Medical Credit Agreement

On November 6, 2018, the Company entered into the Squadron Medical Term Loan that was subsequently amended March 2019, May 29, 2020 and December 16, 2020 to expand the availability of additional term loans, extend the maturity, remove all financial covenant requirements and, in the December 2020 amendment, to incorporate a debt exchange. On December 16, 2020, the Company amended the Squadron Medical Term Loan to expand the credit facility by an additional $15.0 million and to extend the maturity of the Squadron Medical Term Loan to June 30, 2026. In conjunction with the Squadron Medical Term Loan amendment on December 16, 2020, the Company entered into a debt exchange agreement whereby the Company exchanged $30.0 million of the Company’s outstanding debt obligations pursuant to the Squadron Medical Term Loan dated as of November 6, 2018, as amended, for the issuance of 2,700,270 shares of the Company’s Common Stock to Squadron Capital LLC and a participant lender, based on a price of $11.11 per share. The debt exchange resulted in additional debt issuance costs of $3.8 million calculated as the difference between the Company’s stock price on the date of issuance and the issuance price.

F-32

The Company accounted for the March 2019, May 2020, and December 2020 amendments of the Squadron Medical Term Loan as debt modifications with continued amortization of the existing and inclusion of the new debt issuance costs amortized into interest expense utilizing the effective interest rate method. The Company determined that the $30.0 million pre-payment associated with the December 16, 2020 amendment should be accounted for as a partial extinguishment of the November 6, 2018 Squadron Medical Term Loan, as amended. As a result of the partial extinguishment the Company elected, as an accounting policy in accordance with ASC 470-50-40-2, to write off a proportionate amount of the unamortized fees at the time that the financing was partially settled in accordance with the terms of the Squadron Medical Term Loan dated November 6, 2018, as amended. The unamortized debt issuance costs were allocated between the remaining original loan balance and the portion of the loan paid down on a pro-rata basis. At the time of prepayment, the Company recorded a loss on extinguishment of $6.1 million, which was included in loss on debt extinguishment, net, on the consolidated statements of operations for the year ended December 31, 2020 and capitalized $3.8 million in non-cash debt issuance closing costs.

On August 10, 2021, the Company terminated and repaid all obligations under the Squadron Medical Term Loan, which consisted of the $45.0 million outstanding principal and $0.2 million accrued interest. As a result of the early termination of the Squadron Medical Term Loan, the Company recorded a loss on debt extinguishment associated with the unamortized debt issuance costs of $11.7 million, which is included in loss on debt extinguishment, net, on the consolidated statements of operations for the year ended December 31, 2021.

In connection with the initial 2018 Squadron Medical Term Loan and subsequent amendments, the Company issued an aggregate of 6,759,530 warrants to Squadron Medical and a participant lender. See Note 9 for further information on the warrants issued.

Inventory Financing

In November 2018, the Company entered into an Inventory Financing Agreement with an inventory supplier whereby the Company was originally permitted to draw up to $3.0 million for the purchase of inventory. In November 2020 and May 2021, the Company amended the Inventory Financing Agreement with the supplier to increase the available draw to $6.0 million and then to $9.0 million for the purchase of inventory. On August 10, 2021, the Company terminated and repaid all obligations under the Inventory Financing Agreement, which consisted of $8.1 million outstanding principal and $0.1 million accrued interest.

MidCap Facility Agreement

On May 29, 2020, the Company repaid in full all amounts outstanding under the Amended Credit Facility with MidCap Funding IV, LLC, including the outstanding balance of $9.6 million, which consisted of outstanding principal and accrued interest. As a result of the early termination of the Credit Facility with MidCap Funding IV, LLC, the Company recorded a loss on debt extinguishment in its consolidated statements of operations for the year ended December 31, 2020.

7. Commitments and Contingencies

Leases

The Company determines if an arrangement is a lease at inception by assessing whether there is an identified asset and whether the contract conveys the right to control the use of the identified asset in exchange for consideration over a period of time. If both criteria are met, the Company records the associated lease liability and corresponding ROU asset upon commencement of the lease using a discount rate based the incremental borrowing rate of interest that the Company would borrow on a collateralized basis for an amount equal to the lease payments in a similar economic environment. Any short-term leases defined as twelve months or less or month-to-month leases are excluded and continue to be expensed each month. Total costs associated with these short-term leases is immaterial to all years presented.

F-33

The Company leases office and storage facilities and equipment under various operating and financing lease agreements. The initial terms of these leases range from 1 to 10 years and generally provide for periodic rent increases. The Company’s lease agreements do not contain any material variable lease payments, residual value guarantees or material restrictive covenants. The Company aggregates all lease and non-lease components for each class of underlying assets into a single lease component and variable charges for common area maintenance and other variable costs are recognized as expense as incurred. Total variable costs associated with leases for the year ended December 31, 2022 were immaterial. The Company had an immaterial amount of financing leases as of December 31, 2022, which is included in property and equipment, net, accrued expenses and other current liabilities, and other long-term liabilities, on the consolidated balance sheets.

The Company occupies 121,541 square feet of office space as its headquarters in Carlsbad, California. On December 4, 2019, the Company entered into a 10-year operating lease that commenced on February 1, 2021 and will terminate on January 31, 2031, subject to two sixty-month options to renew which are not reasonably certain to be exercised. Base rent under the building lease increases annually by 3% throughout the remainder of the lease. On May 11, 2022, the Company entered into a lease amendment for the build out of additional space within the building which resulted in a lease modification increasing the ROU asset and lease liability.

Future minimum annual lease payments for all operating leases of the Company are as follows as of December 31, 2022 (in thousands):

2023	$	4,937
2024		5,033
2025		5,019
2026		5,080
2027		5,121
Thereafter		13,057
Total undiscounted lease payments		38,247
Less: imputed interest		(6,843	)
Operating lease liability		31,404
Less: current portion of operating lease liability		(4,842	)
Operating lease liability, less current portion	$	26,562

The Company’s weighted average remaining lease term and weighted average discount rate as of December 31, 2022 and December 31, 2021 are as follows:

	December 31,
	2022			2021
Weighted average remaining lease term (years)		7.7			8.6
Weighted average discount rate		5.5	%		8.5	%

Information related to the Company’s operating leases is as follows (in thousands):

	Year Ended December 31,
	2022		2021		2020
Rent expense	$	4,643	$	4,482	$	1,300
Cash paid for amounts included in measurement of lease liabilities	$	4,409	$	1,795	$	1,400

Purchase Commitments

The Company is obligated to certain minimum inventory purchase commitment requirements with a third-party supplier through December 2026. As of December 31, 2022, the remaining minimum purchase commitment required by the Company under the agreement was $27.4 million.

F-34

Litigation

The Company is and may become involved in various legal proceedings arising from its business activities. While management is not aware of any litigation matter that in and of itself would have a material adverse impact on the Company’s consolidated results of operations, cash flows or financial position, litigation is inherently unpredictable, and depending on the nature and timing of a proceeding, an unfavorable resolution could materially affect the Company’s future consolidated results of operations, cash flows or financial position in a particular period. The Company assesses contingencies to determine the degree of probability and range of possible loss for potential accrual or disclosure in the Company’s consolidated financial statements. An estimated loss contingency is accrued in the Company’s consolidated financial statements if it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Because litigation is inherently unpredictable and unfavorable resolutions could occur, assessing contingencies is highly subjective and requires judgments about future events. When evaluating contingencies, the Company may be unable to provide a meaningful estimate due to a number of factors, including the procedural status of the matter in question, the presence of complex or novel legal theories, and/or the ongoing discovery and development of information important to the matters. In addition, damage amounts claimed in litigation against the Company may be unsupported, exaggerated or unrelated to reasonably possible outcomes, and as such are not meaningful indicators of the Company’s potential liability.

In February 2018, NuVasive, Inc. filed suit against the Company in the United States District Court for the Southern District of California (NuVasive, Inc. v. Alphatec Holdings, Inc. et al., Case No. 3:18-cv-00347-CAB-MDD (S.D. Cal.)), alleging that certain of the Company’s products, infringed, or contributed to the infringement of, U.S. Patent Nos. 7,819,801, 8,355,780, 8,361,156, 8,439,832, 8,753,270, 9,833,227 and U.S. Design Patent Nos. D652,519 and D750,252. In May 2018, the Court dismissed the asserted design patents with prejudice. In September 2018, NuVasive filed an Amended Complaint, asserting infringement claims of U.S. Patent Nos. 9,924,859, 9,974,531 and 8,187,334. In December 2018, the Company filed a petition with the Patent Trial and Appeal Board (“PTAB”) challenging the validity of certain claims of the ’156 and ’334 Patents. In July 2020, PTAB ruled that all challenged claims of the ‘156 Patent were valid, that several claims of the ‘334 Patent were invalid and that other challenged claims of the ‘334 Patent valid. In February 2022, the U.S. Court of Appeals for the Federal Circuit affirmed that ruling. In August 2021, the Court found the ’156 Patent invalid and, in September 2021, NuVasive elected not to proceed with its remaining claims for the ’334 Patent, ’780 Patent, ’270 Patent, ’227 Patent and ’859 Patent. Trial on the remaining patents concluded on March 11, 2022. On March 15, 2022, the Court ordered the parties to participate in post-trial settlement conference. In June 2022, the parties reached a final resolution of all matters and executed a confidential settlement agreement. The Court dismissed the action with prejudice. The outcome of these proceedings did not have any material adverse effect on the Company’s consolidated results of operations, cash flows or financial position.

Indemnifications

In the normal course of business, the Company enters into agreements under which it occasionally indemnifies third-parties for intellectual property infringement claims or claims arising from breaches of representations or warranties. In addition, from time to time, the Company provides indemnity protection to third-parties for claims relating to past performance arising from undisclosed liabilities, product liabilities, environmental obligations, representations and warranties, and other claims. In these agreements, the scope and amount of remedy, or the period in which claims can be made, may be limited. It is not possible to determine the maximum potential amount of future payments, if any, due under these indemnities due to the conditional nature of the obligations and the unique facts and circumstances involved in each agreement.

In October 2017, NuVasive filed a lawsuit in Delaware Chancery Court against Mr. Miles, the Company’s Chairman and CEO, who was a former officer and board member of NuVasive. The Company itself was not initially a named defendant in this lawsuit; however, in June 2018, NuVasive amended its complaint to add the Company as a defendant. In October 2018, the Delaware Court ordered that NuVasive advance legal fees for Mr. Miles’ defense in the lawsuit, as well as Mr. Miles’ legal fees incurred in pursuing advancement of his fees, pursuant to an indemnification agreement between NuVasive and Mr. Miles. As of December 31, 2022, the Company has not recorded any liability on the consolidated balance sheet related to this matter.

F-35

Royalties

The Company has entered into various intellectual property agreements requiring the payment of royalties based on the sale of products that utilize such intellectual property. These royalties primarily relate to products sold by Alphatec Spine and are based on fixed fees or calculated either as a percentage of net sales or on a per-unit sold basis. Royalties are included on the accompanying consolidated statements of operations as a component of cost of sales.

8. Orthotec Settlement

On September 26, 2014, the Company entered into a Settlement and Release Agreement, dated as of August 13, 2014, by and among the Company and its direct subsidiaries, including Alphatec Spine, Inc., Alphatec Holdings International C.V., Scient'x S.A.S. and Surgiview S.A.S.; HealthpointCapital, LLC, HealthpointCapital Partners, L.P., HealthpointCapital Partners II, L.P., John H. Foster and Mortimer Berkowitz III; and Orthotec, LLC and Patrick Bertranou, (the “Settlement Agreement”). Pursuant to the Settlement Agreement, the Company agreed to pay Orthotec, LLC $49.0 million in cash, including initial cash payments totaling $1.75 million, which the Company paid in March 2014, and an additional lump sum payment of $15.75 million, which the Company paid in April 2014. The Company agreed to pay the remaining $31.5 million in 28 quarterly installments of $1.1 million and one additional quarterly installment of $0.7 million, commencing October 1, 2014. The unpaid balance of the principal amount due accrues interest at the rate of 7% per year until the balance is paid in full. The accrued but unpaid interest will be paid in quarterly installments of $1.1 million (or the full amount of the accrued but unpaid interest if less than $1.1 million) following the full payment of the $31.5 million in quarterly installments.

The payments set forth above are guaranteed by Stipulated Judgments held against the Company, HealthpointCapital Partners, L.P., HealthpointCapital Partners II, L.P., HealthpointCapital, LLC, John H. Foster and Mortimer Berkowitz III and, in the event of a default, will be entered and enforced against these entities and/or individuals in that order. In September 2014, the Company and HealthpointCapital entered into an agreement for joint payment of settlement whereby HealthpointCapital agreed to contribute $5.0 million to the $49.0 million settlement amount. During the year ended December 31, 2021, HealthpointCapital completed its contribution to the settlement amount.

As of December 31, 2022, the Company has made installment payments in the aggregate of $53.4 million, with a remaining outstanding balance of $4.1 million (including imputed interest). The Settlement Agreement provides for mutual releases of all claims in the Orthotec, LLC v. Surgiview, S.A.S, et al. matter in the Superior Court of California, Los Angeles County and all other related litigation matters involving the Company and its directors and affiliates.

A reconciliation of the total net settlement obligation is as follows (in thousands):

	December 31,
	2022		2021
Litigation settlement obligation - short-term portion	$	3,968	$	4,400
Litigation settlement obligation - long-term portion		—		3,587
Total		3,968		7,987
Future imputed interest		96		478
Total litigation settlement obligation	$	4,064	$	8,465

The short-term portion of the litigation settlement obligation is included in accrued expenses and other current liabilities on the consolidated balance sheets.

9. Equity

Common Stock

There were 200,000,000 shares of common stock authorized at December 31, 2022 and 2021. On March 1, 2021 the Company completed the sale of 12,421,242 shares of common stock for gross proceeds of $138.0 million, and net proceeds of approximately $131.8 million, net of $6.2 million in fees. On October 16, 2020 the Company completed the sale of 13,142,855 shares of common stock for gross proceeds of $115.0 million, resulting in net proceeds of approximately $107.7 million, net of $7.3 million in fees.

F-36

On August 3, 2021, the Company’s Board of Directors authorized the Company to repurchase an aggregate of up to $25.0 million of shares of the Company’s common stock. On August 10, 2021, The Company repurchased 1,806,358 shares of its common stock for approximately $25.0 million in privately negotiated transactions. There were no repurchases of common stock during the years ended December 31, 2022 or 2020.

Redeemable Preferred Stock

The Company issued shares of redeemable preferred stock in connection with its initial public offering in June 2006. As of December 31, 2022, and 2021, the redeemable preferred stock carrying value was $23.6 million and there were 20 million shares of redeemable preferred stock authorized. The redeemable preferred stock is not convertible into common stock but is redeemable at $9.00 per share, (i) upon the Company’s liquidation, dissolution or winding up, or the occurrence of certain mergers, consolidations or sales of all or substantially all of the Company’s assets, before any payment to the holders of the Company’s common stock, or (ii) at the Company’s option at any time. Holders of redeemable preferred stock are generally not entitled to vote on matters submitted to the stockholders, except with respect to certain matters that will affect them adversely as a class and are not entitled to receive dividends. The carrying value of the redeemable preferred stock was $7.11 per share at December 31, 2022 and 2021. The redeemable preferred stock is presented separately from stockholders’ equity in the consolidated balance sheets and any adjustments to its carrying value up to its redemption value of $9.00 per share are reported as a dividend.

2017 PIPE Warrants

The 2017 common stock warrants (the “2017 PIPE Warrants”) had a five-year life and were exercisable by cash exercise only. During the year ended December 31, 2022, there were approximately 2,312,000 2017 PIPE Warrant exercises for total cash proceeds of $3.5 million. During the year ended December 31, 2021, there were approximately 795,000 2017 PIPE Warrant exercises, for total cash proceeds of $1.6 million. As of December 31, 2022, the 2017 PIPE Warrants were expired, and no 2017 PIPE Warrants remained outstanding.

2018 PIPE Warrants

The 2018 common stock warrants (the “2018 PIPE Warrants”) have a five-year life and are exercisable by cash or cashless exercise. During the year ended December 31, 2022, there were approximately 2,168,000 2018 PIPE Warrant exercises for total cash proceeds of $0.4 million. During the year ended December 31, 2021, there were approximately 2,901,000 2018 PIPE Warrant exercises for total cash proceeds of $1.5 million. A total of approximately 6,311,000 2018 PIPE Warrants remained outstanding as of December 31, 2022.

SafeOp Surgical Merger Warrants

The SafeOp common stock warrants (the “SafeOp Warrants”), have a five-year life and are exercisable by cash or cashless exercise. During the year ended December 31, 2022, there were approximately 257,000 SafeOp Warrant cashless exercises. During the year ended December 31, 2021, there were approximately 970,000 SafeOp Surgical Merger Warrant exercises for total cash proceeds of $0.1 million. A total of approximately 938,000 SafeOp Warrants remained outstanding as of December 31, 2022.

Squadron Medical Warrants

In connection with debt financing entered into with Squadron Medical in 2018, and amended in 2019 and 2020, the Company issued common stock warrants to Squadron Medical and a participant lender (the “Squadron Medical Warrants”). The Squadron Medical Warrants expire in May 2027 and are exercisable by cash exercise. No Squadron Medical Warrants have been exercised as of December 31, 2022.

Executive Warrants

The Company issued warrants to Mr. Patrick S. Miles, the Company’s Chairman and Chief Executive Officer (the “Executive Warrants”). The Executive Warrants had a five-year term and are exercisable by cash or cashless exercise. In October 2022, the term was extended to seven years. No Executive Warrants have been exercised as of December 31, 2022.

F-37

A summary of all outstanding warrants as of December 31, 2022 is as follows (in thousands):

	Number of Warrants		Strike Price		Expiration
2018 PIPE Warrants		6,311	$	3.50	May 2023
SafeOp Surgical Merger Warrants		938	$	3.50	May 2023
2018 Squadron Medical Warrants		845	$	3.15	May 2027
2019 Squadron Medical Warrants		4,839	$	2.17	May 2027
2020 Squadron Medical Warrants		1,076	$	4.88	May 2027
Executive Warrants		1,327	$	5.00	December 2024
Other*		155	$	6.97	Various through February 2026
Total		15,491
*Represents weighted average strike price

10. Stock Benefit Plans and Stock-Based Compensation

2016 Equity Incentive Plan

In 2016 the Company adopted its 2016 Equity Incentive Plan (the “2016 Plan”), which replaced the Company’s 2005 Employee, Director and Consultant Stock Plan. On October 25, 2018, the Company’s Board of Directors adopted an amendment to the Company’s 2016 Equity Incentive Award Plan. The 2016 Plan allows for the grant of options, restricted stock, restricted stock unit awards and performance unit awards to employees, directors, and consultants of the Company. Upon its adoption, the 2016 Plan had 1,083,333 shares of common stock reserved for issuance. The Board of Directors determines the terms of the grants made under the 2016 Plan. Options granted under the 2016 Plan expire no later than ten years from the date of grant (five years for incentive stock options granted to holders of more than 10% of the Company’s voting stock). Options generally vest over a four-year period and may be immediately exercisable upon a change of control of the Company. The exercise price of incentive stock options may not be less than 100% of the fair value of the Company’s common stock on the date of grant. The exercise price of any option granted to a 10% stockholder may be no less than 110% of the fair value of the Company’s common stock on the date of grant. Restricted stock unit awards and performance unit awards generally vest over a three or four year period and vest immediately upon a change in control of the Company. On June 17, 2020, the Company’s shareholders approved an amendment to the Company’s 2016 Equity Incentive Award Plan which increased the shares of common stock available for issuance under the Equity Plan by 7,000,000 shares. As of December 31, 2022, approximately 791,000 shares of common stock remained available for issuance under the 2016 Plan. The 2016 Plan will expire in May 2026.

2016 Employment Inducement Award Plan

On October 4, 2016, the Company’s Board of Directors adopted the 2016 Employment Inducement Award Plan (the “Inducement Plan”). The Inducement Plan allows for the grant of options, restricted stock, restricted stock unit awards and performance unit awards to new employees of the Company by granting an award to such new employee as an inducement for the employee to begin employment with the Company. As of December 31, 2022 the Inducement Plan had approximately 477,000 shares of common stock reserved for issuance, which may only be granted to an employee who has not previously been an employee or member of the board of directors of the Company. The terms of the Inducement Plan are substantially similar to the terms of the Company’s 2016 Plan with two principal exceptions: (i) incentive stock options may not be granted under the Inducement Plan; and (ii) the annual compensation paid by the Company to specified executives will be deductible only to the extent that it does not exceed $1.0 million.

F-38

2019 Management Objective Strategic Incentive Plan

Under the 2019 Management Objective Strategic Incentive Plan, the Company is authorized to grant up to 500,000 shares of common stock to third-party individuals or entities that do not qualify under the Company’s other existing equity plans, with a maximum grant of 50,000 shares per participant. As of December 31, 2022, approximately 213,000 restricted shares and approximately 12,500 common stock warrants have been granted under the 2019 Management Objective Strategic Incentive Plan.

2017 Distributor Inducement Plan

Under the 2017 Distributor Inducement Plan, the Company is authorized to grant up to 1,000,000 shares of common stock to independent third-party sales agents whereby, upon the achievement of certain Company sales and/or distribution milestones the Company may grant to an independent sales agent shares of common stock or warrants to purchase shares of common stock. The warrants and restricted stock units issued under the plan are subject to time based or net sales-based vesting conditions. As of December 31, 2022, approximately 305,000 warrants and 414,000 shares of restricted common stock were granted under the 2017 Distributor Inducement Plan. As of December 31, 2022, approximately 295,000 warrants and approximately 392,000 shares of common stock were earned or issued.

2017 Development Services Plan

Under the 2017 Development Services Plan, the Company is authorized to issue up to 8,000,000 shares of common stock to third-parties upon the achievement of certain revenue milestones associated with certain developed royalty-bearing products. Future royalty payments for product and/or intellectual property development work may be paid in either cash or restricted shares of the Company’s common stock at the election of the developer, depending on the terms of the agreement. Each common stock issuance is contingent on net sales-based criteria and other provisions, including the satisfaction of applicable laws regarding the issuance of restricted shares to such developers. The Company has entered into Development Services Agreements for development of a wide variety of potential products and intellectual property, with the possibility of issuing shares of common stock. As of December 31, 2022, no shares have been issued and the majority of the agreements are not deemed probable of common stock issuance at this time. The Company recognizes stock-based compensation once the achievement of the performance criteria and vesting conditions are deemed probable.

Stock-Based Compensation Costs

The compensation cost that has been included in the Company’s consolidated statements of operations for all stock-based compensation arrangements is detailed as follows (in thousands):

	Year Ended December 31,
	2022		2021		2020
Cost of sales	$	2,597	$	737	$	512
Research and development		5,016		4,056		2,114
Sales, general and administrative		32,943		31,657		15,033
Total	$	40,556	$	36,450	$	17,659

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Stock Options

A summary of the Company’s stock option activity under the Plans and related information is as follows (in thousands, except as indicated and per share data):

	Shares			Weighted average exercise price		Weighted average remaining contractual term (in years)		Aggregate intrinsic value
Outstanding at December 31, 2021		3,351		$	3.50
Exercised		(378	)		2.84
Forfeited		(57	)		13.83
Outstanding at December 31, 2022		2,916		$	3.38		4.58	$	26,783
Options vested and expected to vest at    December 31, 2022		2,916		$	3.38		4.58	$	26,783
Options exercisable at    December 31, 2022		2,849		$	3.22		4.51	$	26,550

The weighted-average grant-date fair value per share of stock options granted during the years ended December 31, 2021 and 2020 was $9.88 and $4.71, respectively. There were no stock options granted during the year ended December 31, 2022. The total intrinsic value of stock options exercised was $3.4 million, $6.8 million and $2.3 million for the years ended December 31, 2022, 2021 and 2020, respectively. The aggregate intrinsic value of options at December 31, 2022 is based on the Company’s closing stock price on the last business day of 2022 of $12.35 per share.

The weighted average assumptions used to compute the stock-based compensation costs for the stock options granted during the years ended December 31, 2021 and 2020 are as follows:

	Year Ended December 31,
		2021			2020
Risk-free interest rate			0.84	%		1.03	%
Expected dividend yield			—			—
Weighted average expected life (years)			6.07			6.08
Volatility			87.38	%		84.00	%

As of December 31, 2022, there was $0.3 million of unrecognized compensation expense for stock options which is expected to be recognized on a straight-line basis over a weighted average period of approximately 1.75 years.

Restricted Stock Units and Performance Based Restricted Stock Units

The following table summarizes information about the restricted stock units and performance-based restricted units activity (in thousands, except as indicated and per share data):

	Shares			Weighted average grant date fair value		Weighted average remaining recognition period (in years)
Unvested at December 31, 2021		8,703		$	6.34
Awarded		3,909			8.13
Vested		(3,316	)		4.68
Forfeited		(763	)		6.30
Unvested at December 31, 2022		8,533		$	6.63		1.43

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The weighted-average grant-date fair value per share of awards granted during the years ended December 31, 2022, 2021 and 2020 was $8.13, $12.79 and $4.87, respectively. The total fair value of RSUs that vested during the years ended December 31, 2022, 2021 and 2020 was $35.2 million, $43.9 million and $13.1 million, respectively.

As of December 31, 2022, there was $41.4 million of unrecognized compensation expense for restricted stock awards, restricted stock units, and performance-based restricted units which is expected to be recognized on a straight-line basis over a weighted average period of approximately 1.43 years.

Employee Stock Purchase Plan

In 2007, the Company adopted the Alphatec Holdings, Inc. 2007 Amended and Restated Employee Stock Purchase Plan (the “ESPP”), which was first amended in May 2017. On June 16, 2021, the Company’s shareholders approved a second amendment to the ESPP which increased the amount of shares of common stock available for purchase under the ESPP by 500,000 shares.

The ESPP provides eligible employees with a means of acquiring equity in the Company at a discounted purchase price using their own accumulated payroll deductions. Under the terms of the ESPP, employees can elect to have up to 20% of their annual compensation, up to a maximum of $21,250 per year, withheld to purchase shares of Company common stock for a purchase price equal to 85% of the lower of the fair market value per share (at closing) of Company common stock on (i) the commencement date of the six-month offering period or (ii) the respective purchase date.

During the years ended December 31, 2022, 2021 and 2020 there were approximately 429,000, 227,000 and 379,000 shares of common stock, issued under the ESPP, respectively. The Company recognized $1.6 million, $1.1 million and $1.0 million in expense related to the ESPP for the years ended December 31, 2022, 2021 and 2020, respectively. As of December 31, 2022, approximately 119,000 shares were available under the ESPP for future issuance.

The Company estimates the fair value of shares issued to employees under the ESPP using the Black-Scholes option-pricing model. The assumptions used to estimate the fair value of stock purchase rights under the ESPP are as follows:

	Year Ended December 31,
	2022		2021		2020
Risk-free interest rate	0.07% - 4.54%		0.04% - 0.12%		0.12% - 1.58%
Expected dividend yield		—		—		—
Expected term (years)	0.50 - 0.60			0.50		0.50
Volatility	50.29% - 64.53%		49.98% - 78.37%		54.96% - 102.5%

Common Stock Reserved for Future Issuance

Common stock reserved for future issuance consists of the following (in thousands):

	December 31, 2022
Stock options outstanding		2,916
Unvested restricted stock units		8,533
Employee stock purchase plan		119
Senior convertible notes		17,246
Warrants outstanding		15,491
Authorized for future grant under the Distributor and    Development Services plans		281
Authorized for future grant under the Management    Objective Strategic Incentive Plan		274
Authorized for future grant under the Company    Equity plans		1,269
		46,129

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11. Income Taxes

The components of the pretax income (loss) are presented in the following table (in thousands):

	Year Ended December 31,
	2022			2021			2020
U.S. Domestic	$	(146,627	)	$	(127,943	)	$	(78,849	)
Foreign		(5,382	)		(16,219	)		—
Net loss before taxes	$	(152,009	)	$	(144,162	)	$	(78,849	)

The components of the provision for income taxes are presented in the following table (in thousands):

	Year Ended December 31,
	2022			2021			2020
Current income tax provision:
Federal	$	(764	)	$	123		$	—
State		(140	)		166			100
Foreign		301			66			35
Total current		(603	)		355			135
Deferred income tax provision:
Federal		583			(159	)		(2	)
State		160			(32	)		12
Total deferred		743			(191	)		10
Total income tax provision	$	140		$	164		$	145

The provision for income taxes differs from the amount of income tax determined by applying the applicable U.S. statutory federal income tax rate to pretax loss as a result of the following differences:

	December 31,
	2022			2021			2020
Federal statutory rate		21.00	%		21.00	%		21.00	%
Adjustments for tax effects of:
State taxes, net		0.03			(0.07	)		(0.11	)
Stock-based compensation		(1.79	)		(0.48	)		(0.93	)
Rate differential		0.43			0.43			0.00
Foreign taxes		(0.05	)		(0.05	)		(0.04	)
Other permanent adjustments		0.21			0.08			(1.70	)
Federal uncertain tax positions		0.03			(0.08	)		0.00
Expiration of tax attribute		(1.60	)		0.00			0.00
Other		0.59			(0.13	)		(0.15	)
Valuation allowance		(18.94	)		(20.81	)		(18.25	)
Effective income tax rate		(0.09	)%		(0.11	)%		(0.18	)%

F-42

Significant components of the Company’s deferred tax assets and liabilities as of December 31, 2022 and 2021 are as follows (in thousands):

	December 31,
	2022			2021
Deferred tax assets:
Net operating losses	$	146,464		$	131,734
Interest		12,979			11,095
Capitalized research and development expenses		12,062			—
Inventory		11,298			8,784
Lease liability		7,975			6,216
Stock-based compensation		5,786			4,318
Accruals and reserves		4,292			7,145
Legal settlement		2,302			1,998
Income tax credit carryforwards		1,566			1,574
Total deferred tax assets		204,724			172,864
Valuation allowance		(162,314	)		(127,209	)
Total deferred tax assets, net of valuation allowance		42,410			45,655
Deferred tax liabilities:
Property and equipment		(19,610	)		(18,404	)
Goodwill and intangibles		(15,518	)		(18,439	)
Right-of-use assets		(7,250	)		(6,256	)
Total deferred tax liabilities		(42,378	)		(43,099	)
Net deferred tax assets	$	32		$	2,556

The realization of deferred tax assets is dependent on the Company’s ability to generate sufficient taxable income in future years in the associated jurisdiction to which the deferred tax assets relate. As of December 31, 2022, a valuation allowance of $162.3 million has been established against the deferred tax assets, as the Company has determined that it is currently not likely that these assets will be realized. During the years ended December 31, 2022, 2021 and 2020, the valuation allowance increased by $35.1 million, $39.7 million and $14.4 million, respectively.

In determining the need for a valuation allowance, the Company considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies, and recent financial performance. Based on the review of all positive and negative evidence, including a three-year cumulative pretax loss, the Company determined that a full valuation allowance should be recorded against its deferred tax assets, with the exception of the Company’s Texas Temporary Credit for Business Loss Carryforwards.

The following table summarizes the changes to unrecognized tax benefits (in thousands):

	Year ended December 31,
	2022			2021		2020
Unrecognized tax benefit at the beginning of the year	$	15,165		$	2,452	$	2,452
Increases in tax positions for current year relating to    acquisitions		—			12,713		—
Decreases in tax positions for prior years		(8,929	)		—		—
Increases in tax positions for current year relating to ongoing operations		173			—		—
Decreases in tax positions as a result of a lapse of statute of limitations		(330	)		—		—
Unrecognized tax benefits at the end of the year	$	6,079		$	15,165	$	2,452

At December 31, 2022, 2021 and 2020, $5.6 million, $14.5 million and $2.0 million, respectively, of the Company’s total unrecognized tax benefits, if recognized, would impact the effective income tax rate.

In accordance with the disclosure requirements as described in ASC Topic 740, Income Taxes, the Company classifies uncertain tax positions as non-current income tax liabilities unless they are expected to be paid within one

F-43

year. The Company recognizes interest and penalties related to income tax matters as a component of the income tax provision. As of December 31, 2022 and 2021, there were $0.04 million and $0.2 million in accrued interest and penalties, respectively. There were no accrued interest and penalties as of December 31, 2020.

The Company and its subsidiaries are subject to federal income tax as well as income tax of multiple state and foreign jurisdictions. With few exceptions, the Company is no longer subject to income tax examination by tax authorities in major jurisdictions for years prior to 2017. However, to the extent allowed by law, the taxing authorities may have the right to examine prior periods where net operating losses and tax credits were generated and carried forward and make adjustments up to the amount of the carryforwards. The Company is not currently under examination by the Internal Revenue Service, foreign or state and local tax authorities.

At December 31, 2022, the Company had federal, state, and foreign net operating loss carryforwards of $487.9 million, $375.5 million and $112.9 million, respectively. Federal and state net operating losses generated after December 31, 2017 of $358.7 million and $74.9 million, respectively, can be carried forward indefinitely. The remaining federal and state net operating losses begin expiring at various dates beginning in 2022 through 2042, while foreign net operating losses in France carryforward indefinitely. At December 31, 2022, the Company had state research and development tax credit carryforwards of $3.2 million. The state research and development tax credits do not have an expiration date and may be carried forward indefinitely. Utilization of the net operating loss and tax credit carryforwards may become subject to annual limitations due to ownership change limitations that could occur in the future as provided by Section 382 and 383 of the Internal Revenue Code of 1986, as amended (the “Internal Revenue Code”), as well as similar state provisions. These ownership changes may limit the amount of the net operating loss and tax credit carryforwards that can be utilized annually to offset future taxable income if the Company experiences a cumulative change in ownership of more than 50% within a three-year testing period. The Company completed formal study through the year ended December 31, 2018 and determined ownership changes within the meaning of IRC Section 382 had occurred. The Company adjusted federal tax attribute carry forwards and deferred tax assets accordingly. The Company will make adjustments to the fully reserved attributes as further studies are completed.

F-44

12. Related Party Transactions

In November 2018, the Company entered into the Term Loan and Inventory Financing Agreement with certain affiliates of Squadron Capital, LLC (“Squadron”), including an inventory supplier (the "Squadron Supplier Affiliate”). The Term Loan and the Inventory Financing Agreement were terminated and all obligations thereunder were repaid on August 10, 2021. See Note 6 for further details regarding the Term Loan and Inventory Financing Agreement. For the years ended December 31, 2022, 2021 and 2020, the Company purchased inventory in the amounts of $10.3 million, $7.7 million and $4.0 million, respectively, from the Squadron Supplier Affiliate. As of December 31, 2022 and 2021, the Company had $2.4 million and $0.8 million, respectively, due to the Squadron Supplier Affiliate. Squadron was a lead investor in the Private Placement that was closed on March 1, 2021. David Pelizzon, President and Director of Squadron, currently serves on the Company’s Board of Directors.

13. Business Segment and Geographic Information

The Company operates in one segment based upon the Company’s organizational structure, the way in which the operations and investments are managed and evaluated by the chief operating decision maker (“CODM”) as well as the lack of available discrete financial information at a level lower than the consolidated level. The Company shares common, centralized support functions which report directly to the CODM and decision-making regarding the Company’s overall operating performance and allocation of Company resources is assessed on a consolidated basis.

Net revenue and property and equipment, net, by geographic region are as follows (in thousands):

	Revenue						Property and equipment, net
	Year Ended December 31,						December 31,
(in thousands)	2022		2021		2020		2022		2021
United States	$	326,697	$	223,911	$	141,079	$	99,050	$	85,320
International		24,170		19,301		3,782		2,902		2,081
Total	$	350,867	$	243,212	$	144,861	$	101,952	$	87,401

14. Subsequent Events

On January 6, 2023, the Company entered into a $150.0 million term loan agreement with Braidwell Transaction Holdings, LLC. The agreement provides for an initial term loan facility of $100.0 million which was funded on the closing date. The Company has the option to draw an additional $50.0 million within 18 months of the closing date. The term loan matures in January 2028. Borrowings under the term loan bear interest at an annual rate of Term SOFR plus 5.75%. The outstanding portion of the term loan is secured by substantially all of the Company’s assets with the priority interest of the lenders in the Braidwell Term Loan and the Revolving Facility subject to terms of a customary intercreditor agreement.


 

F-45

EX-4

Exhibit 4.6

THE SECURITIES REPRESENTED BY THIS WARRANT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 (THE “ACT”) OR STATE SECURITIES LAWS AND NO TRANSFER OF THESE SECURITIES MAY BE MADE EXCEPT (A) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE ACT AND THE RULES AND REGULATIONS THEREUNDER AND OF ALL APPLICABLE STATE SECURITIES OR “BLUE SKY” LAWS, OR (B) PURSUANT TO AN EXEMPTION THEREFROM UNDER SAID ACT AND ALL APPLICABLE STATE SECURITIES OR “BLUE SKY” LAWS WITH RESPECT TO WHICH THE COMPANY MAY, UPON REQUEST, REQUIRE A SATISFACTORY OPINION OF COUNSEL FOR THE HOLDER THAT SUCH TRANSFER IS EXEMPT FROM THE REQUIREMENTS OF THE ACT.

amended and restated

WARRANT TO PURCHASE COMMON STOCK
OF
Alphatec Holdings, Inc.

Warrant Shares: 1,327,434 December 28, 2017

THIS WARRANT CERTIFIES THAT, for value received, Patrick S. Miles (the “Holder”), or its assigns, is entitled to purchase up to 1,327,434 shares of Common Stock (the “Shares”) of Alphatec Holdings, Inc., a Delaware corporation (the “Company”) at an exercise price equal to $5.00 per Share (the “Exercise Price”), all on the terms and subject to the conditions and limitation as set forth herein.

I. EXERCISE

Holder may exercise this Warrant in whole or in part, at any time and from time to time following June 28, 2018, in each case, by delivering a duly executed Notice of Exercise in substantially the form attached hereto as Appendix 1 to the principal office of the Company and a check for the aggregate Exercise Price for the Shares being purchased. Promptly after Holder exercises this Warrant, the Company shall deliver to Holder certificates for the Shares acquired, and, if this Warrant has not been fully exercised, a new Warrant representing the Shares not so acquired shall be delivered to Holder. Subject to Article 4 and Section 5.2 below, the Company agrees that any Shares acquired by exercise of this Warrant in accordance with this Article 1 shall be deemed to be issued to the Holder as the record holder of such Shares as of the close of business on the date on which the Notice of Exercise shall have been delivered and payment made for the Exercise Price as aforesaid.

Net Issue via Cashless Exercise. In lieu of exercising this Warrant by delivering a check for the aggregate Exercise Price for the Shares being purchased, this Warrant may also be exercised, in whole or in part, by means of a “cashless exercise” in which the Holder shall be entitled to receive a number of Shares equal to the quotient obtained by dividing [(A-B) (X)] by (A), where:

(A)= as applicable: (i) the VWAP on the Trading Day immediately preceding the date of the applicable Notice of Exercise if such Notice of Exercise is (1) both executed and delivered pursuant to Article 1 hereof on a day that is not a Trading Day or (2) both executed and delivered pursuant to Article 1 hereof on a Trading Day prior to the opening of “regular trading hours” (as defined in Rule 600(b)(64) of Regulation NMS promulgated under the federal securities laws) on such Trading Day, (ii) at the option of the Holder, (y) the VWAP on the Trading Day immediately preceding the date the applicable Notice of Exercise is delivered or (z) the Bid Price of the Common Stock on the principal Trading Market as reported by Bloomberg L.P. as of the time of the Holder’s execution of the applicable Notice of Exercise if such Notice of Exercise is executed during “regular trading hours” on a Trading Day and is delivered within two (2) hours thereafter pursuant to Article 1 hereof or (iii) the VWAP on the date of the applicable Notice of Exercise if the date of such Notice of Exercise is a Trading Day and such Notice of Exercise is both executed and delivered pursuant to Article 1 hereof after the close of “regular trading hours” on such Trading Day;

(B) = the Exercise Price of this Warrant, as adjusted hereunder; and

(X) = the number of Shares that would be issuable upon exercise of this Warrant in accordance with the terms of this Warrant if such exercise were by means of a cash exercise rather than a cashless exercise.

If Shares are issued in such a cashless exercise, the parties acknowledge and agree that in accordance with Section 3(a)(9) of the Securities Act, the Shares shall take on the characteristics of the Warrants being exercised, and the holding period of the Shares being issued may be tacked on to the holding period of this Warrant. The Company agrees not to take any position contrary to this provision.

“Bid Price” means, for any date, the price determined by the first of the following clauses that applies: (a) if the Common Stock is then listed or quoted on a Trading Market, the bid price of the Common Stock for the time in question (or the nearest preceding date) on the Trading Market on which the Common Stock is then listed or quoted as reported by Bloomberg L.P. (based on a Trading Day from 9:30 a.m. (New York City time) to 4:02 p.m. (New York City time)), (b) if OTCQB or OTCQX is not a Trading Market, the volume weighted average price of the Common Stock for such date (or the nearest preceding date) on OTCQB or OTCQX as applicable, (c) if the Common Stock is not then listed or quoted for trading on OTCQB or OTCQX and if prices for the Common Stock are then reported in the “Pink Sheets” published by OTC Markets Group, Inc. (or a similar organization or agency succeeding to its functions of reporting prices), the most recent bid price per share of the Common Stock so reported, or (d) in all other cases, the fair market value of a share of Common Stock as determined by an independent appraiser selected in good faith by the Purchasers of a majority in interest of the Securities then outstanding and reasonably acceptable to the Company, the fees and expenses of which shall be paid by the Company.

“VWAP” means, for any date, the price determined by the first of the following clauses that applies: (a) if the Common Stock is then listed or quoted on a Trading Market, the daily volume weighted average price of the Common Stock for such date (or the nearest preceding date) on the Trading Market on which the Common Stock is then listed or quoted as reported by Bloomberg L.P. (based on a Trading Day from 9:30 a.m. (New York City time) to 4:02 p.m. (New York City time)), (b) if OTCQB or OTCQX is not a Trading Market, the volume weighted average price of the Common Stock for such date (or the nearest preceding date) on OTCQB or OTCQX as applicable, (c) if the Common Stock is not then listed or quoted for trading on OTCQB or OTCQX and if prices for the Common Stock are then reported in the “Pink Sheets” published by OTC Markets Group, Inc. (or a similar organization or agency succeeding to its functions of reporting prices), the most recent bid price per share of the Common Stock so reported, or (d) in all other cases, the fair market value of a share of Common Stock as determined by an independent appraiser selected in good faith by the Purchasers of a majority in interest of the Securities then outstanding and reasonably acceptable to the Company, the fees and expenses of which shall be paid by the Company.

The Holder may elect net issue via cashless exercise by delivering a duly executed Notice of Exercise in substantially the form attached hereto as Appendix 1 to the principal office of the Company which affirmatively sets forth Holder’s election to elect net issue via cashless exercise. Notwithstanding anything herein to the contrary, on the termination date, as set forth in Article 3, this Warrant shall be automatically exercised via cashless exercise pursuant to this Article 1.

II. ADJUSTMENTS TO THE SHARES

A.Split, Subdivision or Combination of Shares. Upon any subdivision of the Shares, by split or otherwise, or combination of the Shares, the number of Shares issuable upon the exercise of this Warrant shall forthwith be proportionately increased, in the case of a subdivision, or proportionately decreased in the case of a combination, and the Exercise Price shall forthwith be proportionately decreased in the case of a subdivision, or proportionately increased in the case of a combination.

B.Reclassification, Merger, Exchange or Substitution. Upon any reclassification, merger, exchange, substitution, or other event that results in a change of the number and/or class of the securities issuable upon exercise of this Warrant, the Holder shall be entitled to receive, upon exercise of this Warrant, the number and kind of securities and property that Holder would have received for the Shares if this Warrant had been exercised immediately before such reclassification, merger, exchange, substitution, or other event. The Company or its successor shall promptly issue to Holder a new Warrant for such new securities or other property. The new Warrant shall provide for adjustments which shall be as nearly equivalent as may be practicable to the adjustments provided for in this Article 2 including, without limitation, adjustments to the Exercise Price and to the number of securities or property issuable upon exercise or conversion of the new Warrant. The provisions of this Section 2.2 shall similarly apply to successive reclassifications, mergers, exchanges, substitutions, or other events.

C.Notice of Adjustments. Whenever the number of Shares or Exercise Price is adjusted or there is any other adjustment of this Warrant as herein provided, the Company shall provide notice to the Holder of such adjustment or adjustments setting forth in reasonable detail the adjustments so made, a brief statement of the facts requiring such adjustment, and the computation by which such adjustment was made.

D.No Impairment. The Company shall not, through a reorganization, transfer of assets, consolidation, merger, dissolution, issue, or sale of securities or any other voluntary action, avoid or seek to avoid the observance or performance of any of the terms to be observed or performed under this Warrant by the Company, but shall at all times in good faith assist in carrying out of all the provisions of this Article 2. The Company shall at all times reserve and keep available out of the aggregate of its authorized but unissued Shares, free of preemptive rights, such number of its duly authorized Shares, or other stock or securities deliverable pursuant to this Article 2, as shall be sufficient to enable the Company at any time to fulfill all of its obligations under this Warrant. The Company covenants that all Shares that may be delivered upon exercise of this Warrant, assuming full payment of the Exercise Price, shall upon delivery by the Company be duly authorized and validly issued, fully paid and nonassessable, free from all stamp taxes, liens and charges with respect to the issue or delivery thereof and otherwise free of all other security interests, encumbrances and claims of any nature whatsoever other than those created by Holder.

III. DURATION

This Warrant shall expire and no longer be exercisable, and its provisions shall have no further force or effect upon the earlier of (a) the date which this Warrant has been exercised for the maximum amount of Shares available for issuance upon an exercise of this Warrant and (b) December 28, 2024.

IV. TRANSFER

This Warrant (as if this Warrant were the Common Stock issuable upon the exercise hereof) and the Shares issued upon the exercise thereof may be transferred in whole or in part only in compliance with all applicable securities laws related to the transfer of this Warrant or the Shares issuable upon the exercise hereof. Subject to such restrictions, the Company shall transfer all or portion of this Warrant from time to time upon the books to be maintained by the Company for that purpose, upon surrender hereof for transfer, properly endorsed or accompanied by appropriate instructions for transfer and such other documents as may be reasonably required by the Company, including, if required by the Company, an opinion of its counsel reasonably satisfactory to the Company to the effect that such transfer is exempt from the registration requirements of the Act, to establish that such transfer is being made in accordance with the terms hereof, and a new Warrant shall be issued to the transferee for the portion of this Warrant so transferred (and, if applicable, a new Warrant shall be issued to the Holder for any portion not transferred) and the surrendered Warrant shall be canceled by the Company.

V. holder representation

The Holder, by the acceptance hereof, represents and warrants that it is acquiring this Warrant and, upon any exercise hereof, will acquire the Shares issuable upon such exercise, for its own account and not with a view to or for distributing or reselling such Shares or any part thereof in violation of the Act or any applicable state securities law, except pursuant to sales registered or exempted under the Act. The Holder acknowledges that the Shares acquired upon the exercise of this Warrant will have restrictions upon resale imposed by state and federal securities laws.

VI. MISCELLANEOUS

A.No Rights as Stockholder Until Exercise. This Warrant does not entitle the Holder to any voting rights, dividends or other rights as a stockholder of the Company with respect to the Shares issuable upon exercise hereof prior to such exercise as set forth in Section 1.

B.Loss or Destruction of this Warrant. Upon receipt by the Company of evidence reasonably satisfactory to it of the loss, theft, destruction or mutilation of this Warrant, and (in the case of loss, theft or destruction) of indemnity reasonably satisfactory to the Company, and upon surrender of this Warrant, if mutilated, the Company will execute and deliver, without charge, a new Warrant of like tenor.

C.Amendment. This Warrant may be modified or amended or the provisions hereof waived with the written consent of the Company and the Holder. This Warrant also may be modified or amended or the provisions hereof waived with the written consent of the Company and the Holder.

D.Successors and Assigns. Subject to applicable securities laws, this Warrant and the rights and obligations evidenced hereby shall inure to the benefit of and be binding upon the successors and permitted assigns of the Company and the successors and permitted assigns of Holder. The provisions of this Warrant are intended to be for the benefit of any Holder from time to time of this Warrant and shall be enforceable by the Holder.

E.Ownership of this Warrant and Shares. The Company may deem and treat the person in whose name this Warrant is registered as the holder and owner hereof (notwithstanding any notations of ownership or writing thereon made by anyone other than the Company) for all purposes.

F.Notices. Except as may be otherwise provided herein, all notices, requests, waivers and other communications made pursuant to this Warrant shall be in writing and shall be deemed to have been duly given (a) when hand delivered to the other party; (b) when sent by email as set forth on the signature page hereto if sent between 8:00 a.m. and 5:00 p.m. recipient’s local time on a business day, or on the next business day if sent other than between 8:00 a.m. and 5:00 p.m. recipient’s local time on a business day; (c) three business days after deposit in the U.S. mail with first class or certified mail receipt requested postage prepaid and addressed to the other party as set forth on the signature page hereto; or (d) the next business day after deposit with a national overnight delivery service, postage prepaid, addressed to the parties as set forth on the signature page hereto with next business day delivery guaranteed, provided that the sending party receives a confirmation of delivery from the delivery service provider. A party may change or supplement the addresses applicable hereunder, or designate additional addresses, for purposes of this Section 6.6 by giving the other party written notice of the new address in the manner set forth above.

G.Binding Effects; Benefits. This Warrant shall inure to the benefit of and shall be binding upon the Company and the Holder and their respective heirs, legal representatives, successors and permitted assigns; provided however, that neither this Warrant nor any rights or obligations hereunder shall be assigned by the Holder other than pursuant to a transfer permitted in accordance with Article 4. Nothing in this Warrant, expressed or implied, is intended to or shall confer on any person other than the Company and the Holder, or their respective heirs, legal representatives, successors or permitted assigns, any rights, remedies, obligations or liabilities under or by reason of this Warrant.

H.Severability. Any term or provision of this Warrant which is invalid or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such invalidity or unenforceability without rendering invalid or unenforceable the terms and provisions of this Warrant or affecting the validity or enforceability of any of the terms or provisions of this Warrant in any other jurisdiction.

I.Governing Law. This Warrant shall be governed by and construed in accordance with the laws of the State of California.

J.Headings. The headings used in this Warrant are for the convenience of reference only and shall not, for any purpose, be deemed a part of this Warrant.

K.Further Assurances. Each of the Company and the Holder shall do and perform all such further acts and things and execute and deliver all such other certificates, instruments and documents as the Company or the Holder may, at any time and from time to time, reasonably request in connection with the performance of any of the provisions of this Warrant.

IN WITNESS WHEREOF, Alphatec Holdings, Inc. has caused this Warrant to be executed by its officer thereunto duly authorized.

Alphatec Holdings, Inc.

By: /s/ J. Todd Koning
Name: J. Todd Koning

Title: EVP & CFO

Address: 1950 Camino Vida Roble, Carlsbad CA 92008
Email: tkoning@atecspine.com

APPENDIX 1

NOTICE OF EXERCISE

1.The undersigned hereby elects to purchase _____ shares of Common Stock of Alphatec Holdings, Inc. pursuant to the terms of the attached Warrant, and tenders herewith payment of the purchase price of such shares in full.

2.Please issue a certificate or certificates representing said shares in the name of the undersigned or in such other name as is specified below:

_____________________

_____________________

_____________________

3.The undersigned represents it is acquiring the shares of Common Stock solely for its own account and not as a nominee for any other party and not with a view toward the resale or distribution thereof except in compliance with applicable securities laws.

__________________________________
(Signature)

__________________________________
(Date)

6

EX-23

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the following Registration Statements:

1.Registration Statement (Form S-8 No. 333-144293) pertaining to the Alphatec Holdings, Inc. 2005 Employee, Director and Consultant Stock Plan,

2.Registration Statement (Form S-8 No. 333-147212) pertaining to the Alphatec Holdings, Inc. 2007 Employee Stock Purchase Plan,

3.Registration Statement (Form S-8 No. 333-187189) pertaining to the Alphatec Holdings, Inc. 2007 Employee Stock Purchase Plan,

4.Registration Statement (Form S-8 No. 333-187190) pertaining to the Amended and Restated Alphatec Holdings, Inc. 2005 Employee, Director and Consultant Stock Plan,

5.Registration Statement, as amended (Form S-3 No. 333-195604) of Alphatec Holdings, Inc.,

6.Registration Statement (Form S-8 No. 333-196616) pertaining to the Alphatec Holdings, Inc. Amended 2007 Employee Stock Purchase Plan,

7.Registration Statement (Form S-8 No. 333-196617) pertaining to the Amended and Restated Alphatec Holdings, Inc. 2005 Employee, Director and Consultant Stock Plan,

8.Registration Statement (Form S-3 No. 333-200869) of Alphatec Holdings, Inc.,

9.Registration Statement (Form S-8 No. 333-202504) pertaining to the Alphatec Holdings, Inc. Amended 2007 Employee Stock Purchase Plan,

10.Registration Statement (Form S-8 No. 333-202505) pertaining to the Amended and Restated Alphatec Holdings, Inc. 2005 Employee, Director and Consultant Stock Plan,

11.Registration Statement (Form S-8 No. 333-211182) pertaining to the Alphatec Holdings, Inc. Amended 2007 Employee Stock Purchase Plan,

12.Registration Statement (Form S-8 No. 333-213981) pertaining to the Alphatec Holdings, Inc. 2016 Equity Incentive Plan and the Alphatec Holdings, Inc. 2016 Employment Inducement Award Plan,

13.Registration Statement (Form S-8 No. 333-215036) pertaining to the Alphatec Holdings, Inc. 2016 Employment Inducement Award Plan,

14.Registration Statement (Form S-8 No. 333-217055) pertaining to the Alphatec Holdings, Inc. 2016 Employment Inducement Award Plan and the Alphatec Holdings, Inc. Amended 2007 Employee Stock Purchase Plan,

15.Registration Statement (Form S-3 No. 333-217444) of Alphatec Holdings, Inc.,

16.Registration Statement (Form S-8 No. 333-217907) pertaining to the Alphatec Holdings, Inc. Amended 2007 Employee Stock Purchase Plan,

17.Registration Statement (Form S-8 No. 333-221084) pertaining to the Alphatec Holdings, Inc. 2016 Employment Inducement Award Plan,

18.Registration Statement (Form S-3 No. 333-221085) of Alphatec Holdings, Inc.,

19.Registration Statement (Form S-3 No. 333-224304) of Alphatec Holdings, Inc.

20.Registration Statement (Form S-8 No. 333-225080) pertaining to the Alphatec Holdings, Inc. 2016 Employment Inducement Award Plan,

21.Registration Statement (Form S-8 No. 333-232661) pertaining to the Alphatec Holdings, Inc. 2016 Employment Inducement Award Plan,

22.Registration Statement (Form S-3 No. 333-222664) of Alphatec Holdings, Inc.,

23.Registration Statement (Form S-3 No. 333-239546) of Alphatec Holdings, Inc.,

24.Registration Statement (Form S-8 No. 333-239556) pertaining to the Alphatec Holdings, Inc. 2016 Equity Incentive Plan,

25.Registration Statement (Form S-3 No. 333-241677) of Alphatec Holdings, Inc.,

26.Registration Statement (Form S-3 No. 333-254915) of Alphatec Holdings, Inc.,

27.Registration Statement (Form S-8 No. 333-258585) pertaining to the Alphatec Holdings, Inc. Amended and Restated 2007 Employee Stock Purchase Plan, of our report dated March 5, 2021, with respect to the financial statements of Alphatec Holdings, Inc. for the year ended December 31, 2020 included in this Annual Report (Form 10-K) of Alphatec Holdings, Inc. for the year ended December 31, 2022.

/s/ Mayer Hoffman McCann P.C.

San Diego, California

February 28, 2023

EX-23

Exhibit 23.2

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement Nos. 333-200869, 333-217444, 333-221085, 333-224304, 333-222664, 333-239546, 333-241677, and 333-254915 on Form S-3 and Registration Statement Nos. 333-144293, 333-147212, 333-187189, 333-187190, 333-195604, 333-196616, 333-196617, 333-202504, 333-202505, 333-211182, 333-213981, 333-215036, 333-217055, 333-217907, 333-221084, 333-225080, 333-232661, 333-239556 and 333-258585 on Form S-8 of our reports dated February 28, 2023, relating to the financial statements of Alphatec Holdings, Inc. and the effectiveness of Alphatec Holdings, Inc.'s internal control over financial reporting appearing in this Annual Report on Form 10-K for the year ended December 31, 2022.

/s/ Deloitte & Touche LLP

San Diego, California

February 28, 2023

EX-31

Exhibit 31.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

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

I, Patrick S. Miles, certify that:

1. I have reviewed this Annual Report on Form 10-K of Alphatec Holdings, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(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.

By:	/s/ Patrick S. Miles
	Patrick S. Miles
	Chairman and Chief Executive Officer
	(principal executive officer)
	February 28, 2023

EX-31

Exhibit 31.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

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

I, J. Todd Koning, certify that:

1.I have reviewed this Annual Report on Form 10-K of Alphatec Holdings, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer(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.

By:	/s/ J. Todd Koning
	J. Todd Koning
	Executive Vice President and Chief Financial Officer
	(principal financial and accounting officer)
	February 28, 2023

EX-32

Exhibit 32

CERTIFICATION UNDER

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Alphatec Holdings, Inc. (the “Company”) on Form 10-K for the year ended December 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Patrick S. Miles, Chairman and Chief Executive Officer, certify, to my knowledge, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

Dated:	February 28, 2023	/s/ Patrick S. Miles
		Patrick S. Miles
		Chairman and Chief Executive Officer
		(principal executive officer of the Company)

In connection with the Annual Report of Alphatec Holdings, Inc. (the “Company”) on Form 10-K for the year ended December 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, J. Todd Koning, Chief Financial Officer, certify, to my knowledge, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

Dated:	February 28, 2023	/s/ J. Todd Koning
		J. Todd Koning
		Executive Vice President and Chief Financial Officer
		(principal financial and accounting officer of the Company)

XML

Document and Entity Information - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2022

Feb. 23, 2023

Jun. 30, 2022

Cover [Abstract]

Entity Registrant Name

ALPHATEC HOLDINGS, INC.

Entity Central Index Key

0001350653

Current Fiscal Year End Date

--12-31

Entity Filer Category

Accelerated Filer

Document Type

10-K

Trading Symbol

ATEC

Document Period End Date

Dec. 31, 2022

Document Fiscal Year Focus

2022

Document Fiscal Period Focus (Q1,Q2,Q3,FY)

FY

Amendment Flag

false

Entity Well-known Seasoned Issuer

No

Entity Current Reporting Status

Yes

Entity Voluntary Filers

No

Entity Common Stock, Shares Outstanding

111,109,933

Entity Public Float

$ 477.5

Entity Emerging Growth Company

false

Entity Small Business

false

Entity Shell Company

false

ICFR Auditor Attestation Flag

true

Entity File Number

000-52024

Entity Tax Identification Number

20-2463898

Entity Address, Address Line One

1950 Camino Vida Roble

Entity Address, City or Town

Carlsbad

Entity Address, State or Province

CA

Entity Address, Postal Zip Code

92008

City Area Code

760

Local Phone Number

431-9286

Document Annual Report

true

Document Transition Report

false

Entity Incorporation, State or Country Code

DE

Entity Interactive Data Current

Yes

Title of 12(b) Security

Common Stock, par value $0.0001 per share

Security Exchange Name

NASDAQ

Auditor Firm ID

34

Auditor Name

Deloitte & Touche LLP

Auditor Location

New York, New York, United States

Documents Incorporated by Reference

DOCUMENTS INCORPORATED BY REFERENCE

The following documents (or parts thereof) are incorporated by reference into the following parts of this Form 10-K: Certain information required in Part III of this Annual Report on Form 10-K is incorporated from the Registrant’s Proxy Statement for the 2023 Annual Meeting of Stockholders.

XML

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 84,696	$ 187,248
Accounts receivable, net of allowances of $679 and $2,307, respectively	60,060	41,893
Inventories	101,521	91,703
Prepaid expenses and other current assets	9,357	10,313
Total current assets	255,634	331,157
Property and equipment, net	101,952	87,401
Right-of-use assets	28,360	25,283
Goodwill	39,775	39,689
Intangible assets, net	82,781	85,274
Other assets	4,874	3,249
Total assets	513,376	572,053
Current liabilities:
Accounts payable	34,742	25,737
Accrued expenses and other current liabilities	72,382	55,549
Contract liabilities	11,956	15,255
Short-term debt	14,948	342
Current portion of operating lease liabilities	4,842	4,212
Total current liabilities	138,870	101,095
Long-term debt	349,511	326,489
Operating lease liabilities, less current portion	26,562	24,383
Other long-term liabilities	11,543	17,061
Redeemable preferred stock, $0.0001 par value; 20,000 shares authorized, and 3,319 shares issued and outstanding at December 31, 2022 and 2021	23,603	23,603
Commitments and contingencies (Note 7)
Stockholders' (deficit) equity:
Series A convertible preferred stock, $0.0001 par value; 15 shares authorized, and 0 shares issued and outstanding at December 31, 2022 and 2021
Common stock, $0.0001 par value; 200,000 authorized; [99,627] shares issued and 106,640 outstanding at December 31, 2022, and 99,627 shares issued and 99,537 shares outstanding at December 31, 2021	11	10
Treasury stock, 1,808 shares at December 31, 2022 and December 31, 2021	(25,097)	(25,097)
Additional paid-in capital	933,537	892,828
Accumulated other comprehensive deficit	(10,690)	(5,994)
Accumulated deficit	(934,474)	(782,325)
Total stockholders' (deficit) equity	(36,713)	79,422
Total liabilities and stockholders' (deficit) equity	$ 513,376	572,053
Series A Convertible Preferred Stock
Stockholders' (deficit) equity:
Series A convertible preferred stock, $0.0001 par value; 15 shares authorized, and 0 shares issued and outstanding at December 31, 2022 and 2021

XML

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Accounts receivable, net of allowances	$ 679	$ 2,307
Redeemable preferred stock, par value (dollars per share)	$ 0.0001	$ 0.0001
Redeemable preferred stock, shares authorized	20,000,000	20,000,000
Redeemable preferred stock, shares issued	3,319,000	3,319,000
Redeemable preferred stock, shares outstanding	3,319,000	3,319,000
Common stock, par value (dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	106,673,000	99,627,000
Common stock, shares outstanding	106,640,000	99,537,000
Treasury stock, shares	1,808,000	1,808,000
Series A Convertible Preferred Stock
Convertible preferred stock, par value (dollars per share)	$ 0.0001	$ 0.0001
Convertible preferred stock, shares authorized	15,000	15,000
Convertible preferred stock, shares issued	0	0
Convertible preferred stock, shares outstanding	0	0

XML

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue:
Revenues	$ 350,867	$ 243,212	$ 144,861
Cost of sales	117,808	85,450	42,360
Gross profit	233,059	157,762	102,501
Operating expenses:
Research and development	44,033	32,015	18,745
Sales, general and administrative	300,013	229,271	129,156
Litigation-related expenses	23,943	11,123	8,552
Amortization of acquired intangible assets	10,115	5,348	688
Transaction-related expenses	120	6,365	4,223
Restructuring expenses	1,810	1,697
Total operating expenses	380,034	285,819	161,364
Operating loss	(146,975)	(128,057)	(58,863)
Interest and other expense, net:
Interest expense, net	(5,505)	(7,108)	(12,374)
Loss on debt extinguishment, net		(7,434)	(7,612)
Other income (expense), net	471	(1,563)
Total interest and other expense, net	(5,034)	(16,105)	(19,986)
Net loss before taxes	(152,009)	(144,162)	(78,849)
Income tax provision	140	164	145
Net loss	$ (152,149)	$ (144,326)	$ (78,994)
Net loss per share, basic	$ (1.47)	$ (1.50)	$ (1.18)
Net loss per share, diluted	$ (1.47)	$ (1.50)	$ (1.18)
Weighted average shares outstanding, basic	103,373	96,197	67,020
Weighted average shares outstanding, diluted	103,373	96,197	67,020
Products and Services
Revenue:
Revenues	$ 350,852	$ 242,258	$ 141,079
International Supply Agreement
Revenue:
Revenues	$ 15	$ 954	$ 3,782

XML

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (152,149)	$ (144,326)	$ (78,994)
Foreign currency translation adjustments	(4,696)	(7,198)	116
Comprehensive loss	$ (156,845)	$ (151,524)	$ (78,878)

XML

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' (DEFICIT) EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Private Placement	Public Offering	Cumulative Effect, Period of Adoption, Adjustment	Additional paid-in capital	Additional paid-in capital Private Placement	Additional paid-in capital Public Offering	Shareholder note receivable	Treasury stock	Accumulated other comprehensive income (loss)	Accumulated deficit	Accumulated deficit Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Common Stock Private Placement	Common Stock Public Offering
Balance at Dec. 31, 2019	$ 43,631			$ (81)	$ 606,558			$ (5,000)	$ (97)	$ 1,088	$ (558,924)	$ (81)	$ 6
Balance, shares at Dec. 31, 2019													61,400
Accounting Standards Update Description	ASU 2019-08
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	$ 15,730				15,730
Sales agent equity incentives	521				521
Common stock issued for conversion of Series A preferred stock, shares													39
Common stock issued for warrant exercises	2,368				2,368
Common stock issued for warrant exercises, shares													1,907
Common stock issued for employee stock purchase plan and stock option exercises	1,970				1,970
Common stock issued for employee stock purchase plan and stock option exercises, shares													665
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability	(983)				(983)
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability, shares													2,238
Issuance of common stock warrants, net	2,974				2,974
Issuance of common stock, net of offering costs			$ 107,698				$ 107,696								$ 2
Issuance of common stock, net of offering costs, shares															13,143
Shareholder note receivable	1,000							1,000
Issuance of common stock for other services	123				123
Issuance of common stock for other services, shares													12
Issuance of common stock for prepayment of debt	33,807				33,807
Issuance of common stock for prepayment of debt, shares													2,700
Foreign currency translation adjustments	116									116
Net loss	(78,994)										(78,994)
Balance at Dec. 31, 2020	129,880				770,764			(4,000)	(97)	1,204	(637,999)		$ 8
Balance, shares at Dec. 31, 2020													82,104
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	34,728				34,728
Sales agent equity incentives	1,339				1,339
Sales agent equity incentives, shares													164
Common stock issued for warrant exercises	3,254				3,254
Common stock issued for warrant exercises, shares													3,943
Common stock issued for employee stock purchase plan and stock option exercises	3,584				3,584
Common stock issued for employee stock purchase plan and stock option exercises, shares													796
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability	(12,801)				(12,801)
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability, shares													1,915
Issuance of common stock, net of offering costs		$ 131,828				$ 131,826								$ 2
Issuance of common stock, net of offering costs, shares														12,421
Shareholder note receivable	4,000							$ 4,000
Repurchase of common stock	(25,000)								(25,000)
Repurchase of common stock, shares													(1,806)
Purchase of capped calls	(39,866)				(39,866)
Foreign currency translation adjustments	(7,198)									(7,198)
Net loss	(144,326)										(144,326)
Balance at Dec. 31, 2021	79,422				892,828				(25,097)	(5,994)	(782,325)		$ 10
Balance, shares at Dec. 31, 2021													99,537
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	37,591				37,591
Sales agent equity incentives	3,068				3,068
Sales agent equity incentives, shares													221
Common stock issued for conversion of Series A preferred stock, shares													29
Common stock issued for warrant exercises	4,160				4,159								$ 1
Common stock issued for warrant exercises, shares													3,820
Common stock issued for employee stock purchase plan and stock option exercises	4,020				4,020
Common stock issued for employee stock purchase plan and stock option exercises, shares													806
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability	(11,220)				(11,220)
Common stock issued for vesting of restricted stock units, net of shares withheld for tax liability, shares													2,204
Reclassification of liability-classified awards	2,841				2,841
Common stock issued for asset acquisition	250				250
Common stock issued for asset acquisition, shares													23
Foreign currency translation adjustments	(4,696)									(4,696)
Net loss	(152,149)										(152,149)
Balance at Dec. 31, 2022	$ (36,713)				$ 933,537				$ (25,097)	$ (10,690)	$ (934,474)		$ 11
Balance, shares at Dec. 31, 2022													106,640

XML

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' (DEFICIT) EQUITY (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Private Placement
Common stock, offering costs	$ 6,200
Public Offering
Common stock, offering costs		$ 7,300

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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating activities:
Net loss	$ (152,149)	$ (144,326)	$ (78,994)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	41,168	26,756	10,949
Stock-based compensation	40,556	36,450	17,659
Amortization of debt discount and debt issuance costs	2,038	1,868	3,974
Amortization of right-of-use assets	2,760	3,418	683
Write-down for excess and obsolete inventories	9,792	11,147	7,044
Loss on disposal of assets	2,594	1,976	498
Loss on debt extinguishment, net		7,434	7,612
Impairment of investment		3,000
Other	1,187	2,721	116
Changes in operating assets and liabilities:
Accounts receivable	(18,832)	(10,141)	(7,484)
Inventories	(20,704)	(27,746)	(18,192)
Prepaid expenses and other current assets	552	1,258	(2,930)
Other assets	(109)	11	(51)
Accounts payable	9,796	757	7,130
Accrued expenses and other current liabilities	13,508	8,023	8,812
Lease liability	(2,678)	150	(1,312)
Contract liabilities	(2,280)	(1,040)
Other long-term liabilities	(2,342)	4,852	(1,926)
Net cash used in operating activities	(75,143)	(73,432)	(46,412)
Investing activities:
Purchases of property and equipment	(49,453)	(68,544)	(23,131)
Purchase of intangible assets	(8,827)		(755)
Acquisition of business, net of cash acquired		(62,133)
Purchase of OCEANE		(21,097)
Cash paid for investments		(3,000)
Settlement of forward contract		(2,988)
Cash received from sale of assets			27
Net cash used in investing activities	(58,280)	(157,762)	(23,859)
Financing activities:
Proceeds from Revolving Credit Facility and line of credit	62,500		42,455
Payment of debt issuance costs	(1,315)	(10,028)
Proceeds from common stock offering		131,828	107,698
Proceeds from issuance of convertible notes		316,250
Net cash (paid) received from common stock exercises	(3,041)	(5,963)	3,341
Purchase of capped calls		(39,866)
Repurchase of common stock		(25,000)
Proceeds from term debt			34,008
Repayment of Revolving Credit Facility and line of credit	(27,500)		(56,615)
Repayment of Squadron Medical Term Loan		(45,000)
Repayment of Inventory Financing Agreement		(8,088)
Other	584	(2,167)	(58)
Net cash provided by financing activities	31,228	311,966	130,829
Effect of exchange rate changes on cash	(357)	(1,289)	94
Net change in cash and cash equivalents	(102,552)	79,483	60,652
Cash and cash equivalents at beginning of year	187,248	107,765	47,113
Cash and cash equivalents at end of year	84,696	187,248	107,765
Supplemental disclosure of cash flow information:
Cash paid for interest	3,860	5,027	6,330
Cash paid for income taxes	272	223	190
Supplemental disclosure of noncash investing and financing activities:
PPP Loan Forgiveness		4,271
Debt issuance costs	2,760
Financed insurance	1,959
Financed property and equipment	600
Financed inventory		4,015
Purchases of property and equipment in accounts payable	2,128	2,577	3,527
Purchase of intangible assets	750
Recognition of lease liability	1,694	$ 23,403
Modification of lease liability for lease amendment	$ 4,288
Common stock warrants issued with term loan draw			2,974
Common stock issued for partial extinguishment of debt			$ 33,807

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Organization and Significant Accounting Policies

12 Months Ended

Dec. 31, 2022

Accounting Policies [Abstract]

Organization and Significant Accounting Policies

1. Organization and Significant Accounting Policies

The Company

Alphatec Holdings, Inc. (the “Company”), through its wholly owned subsidiaries, Alphatec Spine, Inc. (“Alphatec Spine”), SafeOp Surgical, Inc. (“SafeOp”), and EOS imaging S.A. (“EOS”), is a medical technology company focused on the design, development, and advancement of technology for the better surgical treatment of spinal disorders. The Company markets its products in the United States of America and internationally via a network of independent sales agents and direct sales representatives.

Basis of Presentation and Principles of Consolidation

The consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP") and include the accounts of the Company and its wholly owned subsidiaries. The Company translates the financial statements of its foreign subsidiaries using end-of-period exchange rates for assets and liabilities and average exchange rates during each reporting period for results of operations. All intercompany balances and transactions have been eliminated in consolidation. The Company operates in one reportable business segment.

Reclassification

Certain amounts in the consolidated financial statements for the years ended December 31, 2021 and 2020 have been reclassified to conform to the current year’s presentation. These reclassifications were immaterial and have no impact on previously reported results of operations or accumulated deficit.

Use of Estimates

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities, and the reported amounts of revenues and expenses. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include the useful lives of property and equipment, goodwill, intangible assets, allowances for doubtful accounts, deferred tax assets, inventory, stock-based compensation, revenues, income tax uncertainties, and other contingencies.

Concentrations of Credit Risk and Significant Customers

Financial instruments, which potentially subject the Company to concentrations of credit risk, consist primarily of cash, cash equivalents, and accounts receivable. The Company limits its exposure to credit loss by depositing its cash and investments with established financial institutions. As of December 31, 2022, a substantial portion of the Company’s available cash funds is held in business accounts. Although the Company deposits its cash with multiple financial institutions, its deposits, at times, may exceed federally insured limits.

The Company’s customers are primarily hospitals and surgical centers. No one single customer represented greater than 10 percent of consolidated revenues and accounts receivable for the years presented. Credit to customers is granted based on an analysis of the customers’ credit worthiness. Credit losses have not been significant.

Cash and Cash Equivalents

The company considers all highly liquid investments that are readily convertible into cash and have an original maturity of three months or less at the time of purchase to be cash equivalents.

Accounts Receivable, net

Accounts receivable are presented net of allowance for doubtful accounts. The Company makes judgments as to its ability to collect outstanding receivables and provides allowances for a portion of receivables when collection becomes doubtful. Provisions are made based upon a specific review of all significant outstanding invoices. In determining the provision for invoices not specifically reviewed, the Company analyzes historical collection experience. If the historical data used to calculate the allowance provided for doubtful accounts does not reflect the Company’s future ability to collect outstanding receivables or if the financial condition of customers were to deteriorate, resulting in impairment of their ability to make payments, an increase in the provision for doubtful accounts may be required.

The Company’s accounts receivable generally have net 30-day payment terms. The Company generally does not allow returns of products that have been delivered. The Company offers standard quality assurance warranty on its products. The Company had no material bad debt expense and there were no material contract assets during the years presented.

Excess and Obsolete Inventory

Most of the Company’s inventory is comprised of finished goods, which is primarily produced by third-party suppliers. Specialized implants, fixation products, biologics, and disposables are determined by utilizing a standard cost method that includes capitalized variances which approximates the weighted average cost. Imaging equipment and related parts are valued at weighted average cost. Inventories are stated at the lower of cost or net realizable value. The Company reviews the components of its inventory on a periodic basis for excess and obsolescence and adjusts inventory to its net realizable value as necessary.

The Company records a lower of cost or net realizable value (“LCNRV”) inventory reserve for estimated excess and obsolete inventory based upon its expected use of inventory on hand. The Company’s inventory, which consists primarily of specialized implants, fixation products, biologics, and disposables is at risk of obsolescence due to the need to maintain substantial levels of inventory. In order to market its products effectively and meet the demands of interoperative product placement, the Company maintains and provides surgeons and hospitals with a variety of inventory products and sizes. For each surgery, fewer than all components will be consumed. The need to maintain and provide a wide variety of inventory causes inventory to be held that is not likely to be used.

The Company’s estimates and assumptions for excess and obsolete inventory are reviewed and updated on a quarterly basis. The estimates and assumptions are determined primarily based on current usage of inventory and the age of inventory quantities on hand. Additionally, the Company considers recent sales experience to develop assumptions about future demand for its products, while considering product life cycles and new product launches. Increases in the LCNRV reserve for excess and obsolete inventory result in a corresponding charge to cost of sales. For the years ended December 31, 2022, 2021 and 2020, the Company recorded LCNRV charges for excess and obsolete inventory of $9.8 million, $11.1 million and $7.0 million, respectively, net of inventory sold of $1.5 million, $2.5 million and $1.0 million, respectively. For the years ended December 31, 2022, 2021 and 2020, the Company recorded a reduction of reserve for inventory that was disposed of $8.2 million, $2.1 million and $1.3 million, respectively.

Property and Equipment, net

Property and equipment are stated at cost, net of accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets, generally ranging from three to seven years. Leasehold improvements and assets acquired under financing leases are amortized over the shorter of their useful lives or the remaining terms of the related leases.

Operating Lease

The Company determines whether a contract is a lease or contains a lease at inception by assessing whether there is an identified asset and whether the contract conveys the right to control the use of the identified asset in exchange for consideration over a period of time. If both criteria are met, the Company determines the initial classification and measurement of its right-of-use (“ROU”) asset and lease liability at the lease commencement date and thereafter, if modified. The Company recognizes a ROU asset and lease liability for its operating leases with lease terms greater than 12 months. The lease term includes any renewal options and termination options that the Company is reasonably assured to exercise. ROU assets and lease liabilities are based on the present value of lease payments over the lease term. The present value of operating lease payments is determined by using the incremental borrowing rate of interest that the Company would borrow on a collateralized basis for an amount equal to the lease payments in a similar economic environment.

Rent expense for operating leases is recognized on a straight-line basis over the reasonably assured lease term based on the total lease payments and is included in cost of sales, research and development, and sales, general and administrative expenses in the consolidated statements of operations.

The Company aggregates all lease and non-lease components for each class of underlying assets into a single lease component and variable charges for common area maintenance and other variable costs are recognized as expense as incurred. Total variable costs associated with leases were immaterial for all years presented. The Company had an immaterial amount of financing leases as of December 31, 2022 and 2021, which is included in property and equipment, net, accrued expenses and other current liabilities, and other long-term liabilities on the consolidated balance sheets.

Valuation of Goodwill

Goodwill represents the excess of the cost over the fair value of net assets acquired from the Company’s business combinations. The determination of the value of goodwill and intangible assets arising from business combinations and asset acquisitions requires extensive use of accounting estimates and judgments to allocate the purchase price to the fair value of the net tangible and intangible assets acquired. Goodwill is assessed for impairment using fair value measurement techniques on an annual basis or more frequently if facts and circumstance warrant such a review. Goodwill is considered to be impaired if the Company determines that the carrying value of the reporting unit exceeds its respective fair value.

The Company’s annual evaluation for impairment of goodwill consists of one reporting unit. The Company completed its most recent annual evaluation for impairment of goodwill as of October 1, 2022 and determined that no impairment existed. In addition, no indicators of impairment were noted through December 31, 2022, and consequently no impairment charge was recorded during the years ended December 31, 2022, 2021 and 2020.

Valuation of Intangible Assets

Intangible assets are comprised primarily of purchased technology, customer relationships, trade name, trademarks, and in-process research and development. The Company makes significant judgments in relation to the valuation of intangible assets resulting from business combinations and asset acquisitions. Intangible assets are generally amortized on a straight-line basis over their estimated useful lives of 2 to 12 years. The Company bases the useful lives and related amortization expense on the period of time it estimates the assets will generate net sales or otherwise be used. The Company also periodically reviews the lives assigned to its intangible assets to ensure that its initial estimates do not exceed any revised estimated periods from which the Company expects to realize cash flows. If a change were to occur in any of the above-mentioned factors or estimates, the likelihood of a material change in the Company’s reported results would increase. The Company evaluates its intangible assets with finite lives for indications of impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. Factors that could trigger an impairment review include significant under-performance relative to expected historical or projected future operating results, significant changes in the manner of the Company’s use of the acquired assets or the strategy for its overall business or significant negative industry or economic trends. If this evaluation indicates that the value of the intangible asset may be impaired, the Company makes an assessment of the recoverability of the net carrying value of the asset over its remaining useful life. If this assessment indicates that the intangible asset is not recoverable, based on the estimated undiscounted future cash flows of the asset over the remaining amortization period, the Company reduces the net carrying value of the related intangible asset to fair value and may adjust the remaining amortization period. Significant judgment is required in the forecasts of future operating results that are used in the discounted cash flow valuation models. It is possible that plans may change and estimates used may prove to be inaccurate. If actual results, or the plans and estimates used in future impairment analyses, are lower than the original estimates used to assess the recoverability of these assets, the Company could incur additional impairment charges. There were no impairment charges during the years ended December 31, 2022, 2021 or 2020.

In-process research and development ("IPR&D") and software in development have indefinite lives and are not amortized until the related products reach full commercial launch or when the projects are complete and their assets are ready for their intended use. Indefinite-lived intangible assets are considered to be impaired if the products do not reach commercial launch, if the project is not completed or not completed in a timely manner, or if the related products or projects are no longer technologically feasible. Impairment related to IPR&D and software in development is calculated as the excess of the asset's carrying value over its fair value. There were no impairment charges during the years ended December 31, 2022, 2021 or 2020.

Impairment of Long-Lived Assets

The Company assesses potential impairment to its long-lived assets when there is evidence that events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. An impairment loss is recognized when estimated future undiscounted cash flows related to the asset are less than its carrying amount. Any required impairment loss is measured as the amount by which the carrying amount of a long-lived asset exceeds its fair value and is recorded as a reduction in the carrying value of the related asset and a charge to operating results. There were no material impairment charges during the years ended December 31, 2022, 2021 or 2020.

Warrants to Purchase Common Stock

Warrants are accounted for in accordance with the applicable accounting guidance as either derivative liabilities or as equity instruments depending on the specific terms of the agreements.

All warrants issued during the years ended December 31, 2022 and 2021 qualified for classification within stockholders’ equity.

Fair Value Measurements

The carrying amount of financial instruments consisting of cash and cash equivalents, accounts receivable, prepaid expenses and other current assets, accounts payable, accrued expenses, and short-term debt included in the Company’s consolidated financial statements are reasonable estimates of fair value due to their short maturities.

Authoritative guidance establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

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

Level 2: Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active; or other inputs that can be corroborated by observable market data for substantially the full term of the assets or liabilities.

Level 3: Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

Revenue Recognition

The Company recognizes revenue from product sales in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Revenue from Contracts with Customers (“Topic 606”). This standard applies to all contracts with customers, except for contracts that are within the scope of other standards, such as leases, insurance, collaboration arrangements, and financial instruments. Under Topic 606, an entity recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration that the entity expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that an entity determines are within the scope of Topic 606, the entity performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation. The Company only applies the five-step model to contracts when it is probable that the entity will collect the consideration it is entitled to in exchange for the goods or services it transfers to the customer.

Sales are derived primarily from the sale of spinal implant products, imaging equipment, and related services to hospitals and medical centers through direct sales representatives and independent sales agents. Revenue is recognized when obligations under the terms of a contract with customers are satisfied, which occurs with the transfer of control of products to customers, either upon shipment of the product or delivery of the product to the customer depending on the shipping terms, or when the products are used in a surgical procedure (implanted in a patient). Revenue from the sale of imaging equipment is recognized as each distinct performance obligation is fulfilled and control transfers to the customer, beginning with shipment or delivery, depending on the terms. Revenue from other distinct performance obligations, such as maintenance on imaging equipment and other imaging related services, is recognized in the period the service is performed, and makes up less than 10% of the Company’s total revenue. Revenue is measured based on the amount of consideration expected to be received in exchange for the transfer of the goods or services specified in the contract with each customer. In certain cases, the Company does offer the ability for customers to lease its imaging equipment primarily on a non-sales type basis, but such arrangements are immaterial to total revenue in the periods presented. The Company generally does not allow returns of products that have been delivered. Costs incurred by the Company associated with sales contracts with customers are deferred over the performance obligation period and recognized in the same period as the related revenue, except for contracts that complete within one year or less, in which case the associated costs are expensed as incurred. Payment terms for sales to customers may vary but are commensurate with the general business practices in the country of sale.

To the extent that the transaction price includes variable consideration, such as discounts, rebates, and customer payment penalties, the Company estimates the amount of variable consideration that should be included in the transaction price utilizing either the expected value method or the most likely amount method depending on the nature of the variable consideration. Variable consideration is included in the transaction price if, in the Company’s judgment, it is probable that a significant future reversal of cumulative revenue under the contract will not occur. Estimates of variable consideration and determination of whether to include estimated amounts in the transaction price are based largely on an assessment of the Company’s anticipated performance and all information that is reasonably available, including historical, current, and forecasted information.

The Company records a contract liability, or deferred revenue, when it has an obligation to provide a product or service to the customer and payment is received in advance of its performance. When the Company sells a product or service with a future performance obligation, revenue is deferred on the unfulfilled performance obligation and recognized over the related performance period. Generally, the Company does not have observable evidence of the standalone selling price related to its future service obligations; therefore, the Company estimates the selling price using an expected cost plus a margin approach. The transaction price is allocated using the relative standalone selling price method. The use of alternative estimates could result in a different amount of revenue deferral.

Research and Development Expenses

Research and development costs are expensed as incurred. Research and development expenses consist of costs associated with the design, development, testing, and enhancement of the Company's products. Research and development expenses also include salaries and related employee benefits, research-related overhead expenses, fees paid to external service providers and development consultants in the form of both cash and equity.

Transaction-related Expenses

Transaction-related costs are expensed as incurred. Transaction-related expenses consist of certain costs incurred related primarily to the acquisition and integration of EOS.

Product Shipment Cost

Product shipment costs for surgical sets are included in sales, general and administrative expenses in the accompanying consolidated statements of operations. Product shipment costs totaled $14.8 million, $8.3 million and $5.3 million for the years ended December 31, 2022, 2021 and 2020 respectively.

Stock-Based Compensation

Stock-based compensation expense for equity-classified awards, principally related to restricted stock units ("RSUs") and performance restricted stock units ("PRSUs") is measured at the grant date based on the estimated fair value of the award. The fair value of equity instruments that are expected to vest is recognized and amortized over the requisite service period. The Company has granted awards with up to four year graded or cliff vesting terms. No exercise price or other monetary payment is required for receipt of the shares issued in settlement of the respective award; instead, consideration is furnished in the form of the participant’s service.

The fair value of RSUs including PRSUs with pre-defined performance criteria is based on the stock price on the date of grant whereas the expense for PRSUs with pre-defined performance criteria is adjusted with the probability of achievement of such performance criteria at each period end. The fair value of the PRSUs that are earned based on the achievement of pre-defined market conditions, is estimated on the date of grant using a Monte Carlo valuation model. The key assumptions in applying this model are an expected volatility, risk-free interest rate and the probability of the performance criteria being met.

Stock-based compensation recorded in the Company’s consolidated statements of operations is based on awards expected to ultimately vest and has been reduced for estimated forfeitures. The Company’s estimated forfeiture rates may differ from its actual forfeitures. The Company considers its historical experience of pre-vesting forfeitures on awards by each homogenous group of employees as the basis to arrive at its estimated annual pre-vesting forfeiture rates.

The Company estimates the fair value of stock options issued under the Company’s equity incentive plans and shares issued to employees under the Company’s employee stock purchase plan (“ESPP”) using a Black-Scholes option-pricing model on the date of grant. The Black-Scholes option-pricing model incorporates various assumptions including expected volatility, expected term and risk-free interest rates. The expected volatility is based on the historical volatility of the Company’s common stock over the most recent period commensurate with the estimated expected term of the Company’s stock options and ESPP offering period which is derived from historical experience. The risk-free interest rate for periods within the contractual life of the option is based on the United States ("U.S.") Treasury yield in effect at the time of grant. The Company has never declared or paid dividends and has no plans to do so in the foreseeable future.

The Company accounts for stock option grants to non-employees in accordance with provisions which require that the fair value of these instruments be recognized as an expense over the period in which the related services are rendered.

Income Taxes

The Company accounts for income taxes in accordance with provisions which set forth an asset and liability approach that requires the recognition of deferred tax assets and deferred tax liabilities for the expected future tax consequences of temporary differences between the carrying amounts and the tax bases of assets and liabilities. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized. In making such determination, a review of all available positive and negative evidence must be considered, including scheduled reversal of deferred tax liabilities, projected future taxable income, tax planning strategies, and recent financial performance.

The Company recognizes interest and penalties related to uncertain tax positions as a component of the income tax provision.

Net Loss per Share

Basic net loss per share is calculated by dividing the net loss available to common stockholders by the weighted-average number of common shares outstanding for the period. If applicable, diluted net loss per share attributable to common stockholders is calculated by dividing net loss available to common stockholders by the diluted weighted-average number of common shares outstanding for the period determined using the treasury-stock method and the if-converted method for convertible debt. For purposes of this calculation, common stock subject to repurchase by the Company, common stock issuable upon conversion or exercise of convertible notes, preferred shares, options, and warrants are considered to be common stock equivalents and are only included in the calculation of diluted earnings per share when their effect is dilutive. Due to the Company’s net loss position, the effect of including common stock equivalents in the earnings per share calculation is anti-dilutive, and therefore not included.

The following table sets forth the computation of basic and diluted loss per share (in thousands, except per share data):

	Year Ended December 31,
	2022			2021			2020
Numerator:
Net loss	$	(152,149	)	$	(144,326	)	$	(78,994	)
Denominator:
Weighted average common shares outstanding		103,373			96,197			67,020
Net loss per share, basic and diluted	$	(1.47	)	$	(1.50	)	$	(1.18	)

The following potentially dilutive shares of common stock were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive for the years presented (in thousands):

	Year Ended December 31,
	2022		2021		2020
Series A convertible preferred stock		—		29		29
Options to purchase common stock and employee stock purchase plan		2,991		3,416		3,951
Unvested restricted stock units		8,533		8,703		8,216
Warrants to purchase common stock		15,491		20,184		24,881
Senior convertible notes		17,246		17,246		—
		44,261		49,578		37,077

Recent Accounting Pronouncements

Recently Issued Accounting Pronouncements

In August 2021, the FASB issued ASU No. 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers. The guidance requires application of ASC 606, “Revenue from Contracts with Customers” to recognize and measure contract assets and contract liabilities acquired in a business combination. ASU No. 2021-08 adds an exception to the general recognition and measurement principle in ASC 805 where assets acquired and liabilities assumed in a business combination, including contract assets and contract liabilities arising from contracts with customers, are measured at fair value on the acquisition date. Under the new guidance, the acquirer will recognize acquired contract assets and contract liabilities as if the acquirer had originated the contract. The standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2022, with early adoption permitted. The Company does not intend to early adopt the standard and is in the process of assessing the impact, if any, on its consolidated financial statements and related disclosures.

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Business Combination

12 Months Ended

Dec. 31, 2022

Business Combinations [Abstract]

Business Combination

2. Business Combination

The Company recognizes assets acquired, liabilities assumed, and any noncontrolling interest at fair value at the date of acquisition.

On December 16, 2020, the Company entered into a Tender Offer Agreement with EOS, pursuant to which the Company agreed to commence a public tender offer (the “Offer”) to purchase all of the issued and outstanding ordinary shares, nominal value €0.01 per share (collectively, the “EOS Shares”), for a cash offer of €2.45 per EOS Share, and outstanding convertible bonds of EOS (“OCEANEs”) for a cash offer of €7.01 per OCEANE, which included accrued but unpaid interest. On May 13, 2021 (the “Change in Control Date”), the Company substantially completed the Offer, pursuant to which the Company purchased 59% of the issued and outstanding EOS Shares and 53% of the OCEANEs for $66.5 million in cash pursuant to the Offer. In addition, prior to the Change in Control Date, the Company had also acquired 30% of the issued and outstanding EOS Shares and 4% of the OCEANEs on the open market for $25.0 million in cash. After the Change in Control Date, the Company held a controlling financial interest in EOS representing 89% of issued and outstanding EOS Shares and 57% of OCEANEs, equal to approximately 80% of the capital and voting rights of EOS on a fully diluted basis. The Offer was reopened on May 17, 2021 to purchase the remaining EOS Shares for $8.5 million, ultimately resulting in the acquisition of 100% of EOS Shares and 57% of the OCEANEs as of June 2, 2021. The total cash paid to acquire 100% of the EOS Shares and 57% of the OCEANEs was $100.0 million.

EOS, which now operates as a wholly owned subsidiary of the Company, is a global medical device company that designs, develops and markets innovative, low dose 2D/3D full body and biplanar weight-bearing imaging, rapid 3D modeling of EOS patient X-ray images, web-based patient-specific surgical planning, and integration of surgical plan into the operating room that collectively bridge the entire spectrum of care from imaging to post-operative assessment capabilities for orthopedic surgery. The Company plans to integrate this technology into its procedural approach to spine surgery to better inform and better achieve spinal alignment objectives in surgery.

During the year ended December 31, 2022, the Company recorded a purchase accounting adjustment primarily related to deferred tax assets, which resulted in a $1.6 million increase to goodwill. The Company has completed its estimate of the fair value of the purchase consideration, the assets acquired, and the liabilities assumed. Accordingly, the Company has allocated the purchase consideration as follows:

(in thousands)	As of May 13, 2021
Cash paid for purchase of EOS Shares at Change in Control Date	$	46,908
Cash paid for purchase of OCEANEs at Change in Control Date		19,620
Total cash paid at Change in Control Date		66,528
Fair value of investment in EOS Shares held prior to Change in    Control Date		23,549
Fair value of investment in OCEANEs held prior to Change in    Control Date		1,477
Total fair value of investment in EOS held prior to Change in    Control Date		25,026
Fair value of noncontrolling interest acquired after Change in    Control Date		8,454
	$	100,008
Cash and cash equivalents	$	16,778
Accounts receivable		9,083
Inventory		26,681
Other current assets		4,422
Property, plant and equipment, net		1,650
Deferred tax assets		536
Right-of-use assets		4,341
Goodwill		29,469
Definite-lived intangible assets:
Developed technology		56,000
Customer relationships		9,500
Trade names		6,000
Other noncurrent assets		395
Contract liabilities		21,196
Long-term debt		15,297
Other liabilities assumed		28,354
Total identifiable net assets	$	100,008

The purchase price, including cash paid at the Change in Control Date, the fair value of the investment held prior to the Change in Control Date, and the fair value of the noncontrolling interest acquired after the Change in Control Date, exceeded the fair value of the net tangible and identifiable intangible assets acquired as part of the acquisition. As a result, the Company recorded goodwill in connection with the acquisition. Goodwill primarily consists of expected revenue synergies resulting from the combination of product portfolios and cost synergies related to elimination of redundant facilities and functions associated with the combined entity. Goodwill recognized in this transaction is not deductible for tax purposes. The intangible assets acquired will be amortized on a straight-line basis over useful lives of ten years, seven years and ten years for technology-based, customer-related and trade name related intangible assets, respectively. The estimated fair values of the intangible assets acquired were primarily determined using the income approach based on significant inputs that were not observable in the market.

Acquisition costs of $5.8 million were recognized during the year ended December 31, 2021, as transaction-related expenses on the consolidated statements of operations as incurred. No such costs were recognized during the year ended December 31, 2022. The Company’s results of operations for the year ended December 31, 2021 included the operating results of EOS of $30.0 million of revenue and a net loss of $17.6 million in the consolidated statement of operations.

The following table presents the results of the year ended December 31, 2022 and the unaudited pro forma results for the year ended December 31, 2021, which combines the historical results of operations of the Company and its wholly owned subsidiaries as though the companies had been combined as of January 1, 2020. The pro forma information is presented for informational purposes only and is not indicative of the results of operations that may have been achieved if the acquisition had taken place at such time. The unaudited pro forma results presented include non-recurring adjustments directly attributable to the business combination, including $7.3 million in amortization charges for acquired intangible assets and $10.8 million in acquisition related expenses. The unaudited pro forma results include IFRS to U.S. GAAP adjustments for EOS historical results and adjustments for accounting policy alignment, which were materially similar to the Company. Any differences in accounting policies were adjusted to reflect the accounting policies of the Company in the unaudited pro forma results presented.

	Year Ended December 31,
(in thousands, except per share amounts)	2022			2021
Total revenue	$	350,867		$	251,906
Net loss		(152,149	)		(140,441	)
Net loss per share, basic and diluted	$	(1.47	)	$	(1.46	)

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Fair Value Measurements

12 Months Ended

Dec. 31, 2022

Fair Value Disclosures [Abstract]

Fair Value Measurements

3. Fair Value Measurements

Assets and liabilities measured at fair value on a recurring basis include the following as of December 31, 2022, and December 31, 2021 (in thousands):

	December 31, 2022
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	62,956		—		—	$	62,956
Total cash equivalents	$	62,956		—		—	$	62,956
	December 31, 2021
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	140,010		—		—	$	140,010
Total cash equivalents	$	140,010		—		—	$	140,010
Liability classified equity award	$	—		—		2,052	$	2,052

The Company did not have any transfers of assets and liabilities between the levels of the fair value measurement hierarchy during the periods presented.

On March 16, 2021, the Company entered into two foreign currency forward contracts, with a notional amount of $8.0 million total, $4.0 million each (€6.7 million total and €3.3 million each), to mitigate the foreign currency exchange risk related to its EOS subsidiary. The contracts are not designated as hedging instruments. The Company classified the derivative liabilities within Level 2 of the fair value hierarchy as observable inputs are available for the full term of the derivative instruments. The fair value of the forward contracts was developed using a market approach based on publicly available market yield curves and the term of the contracts. During the year ended December 31, 2021, the foreign currency forward contracts were settled for $7.6 million (€6.7 million). The Company recognized a nominal loss from the change in fair value of the contracts during the year ended December 31, 2021. The loss on the contract settlement was recorded within other expense, net on the consolidated statements of operations and the cash settlement is included in investing activities in the consolidated statements of cash flows for the year ended December 31, 2021.

On December 18, 2020, the Company entered into a foreign currency forward contract, with a notional amount of $117.9 million (€95.6 million) to mitigate the foreign currency exchange risk related to the Tender Offer Agreement, denominated in Euros. The contract was not designated as a hedging instrument. The Company classified the derivative liability within Level 2 of the fair value hierarchy as observable inputs were available for the full term of the derivative instrument. The fair value of the forward contract was developed using a market approach based on publicly available market yield curves and the term of the contract. On March 2, 2021, the foreign currency forward contract was settled for $115.3 million (€95.6 million). The Company recognized a $1.7 million and $0.9 million loss from the change in fair value of the contract during the years ended December 31, 2021 and 2020, respectively. The loss on the contract settlement was recorded as other expense on the consolidated statement of operations and the cash settlement is included in investing activities in the consolidated statements of cash flows for the year ended December 31, 2021.

In 2019, the Company issued a liability classified equity award to one of its executive officers. As the award was required to be settled in cash, it was classified as a liability on the consolidated balance sheets for the year ended December 31, 2021. The award was classified within Level 3 of the fair value hierarchy as the Company used a probability-weighted income approach, utilizing significant unobservable inputs including the probability of achieving the specific market condition with the valuation updated at each reporting period.

On November 2, 2022, the award was amended to be paid in shares of the Company's common stock. As a result of the amendment, the award is classified as equity in the consolidated balance sheets for the year ended December 31, 2022. The award vests in 2023 subject to continued service and a specific market condition. The Company used a probability-weighted income approach, utilizing significant unobservable inputs including the probability of achieving the specific market condition, to determine the fair value of the award after the amendment of approximately $3.0 million. The previously recognized liability was reclassified to additional paid-in capital and the unrecognized compensation costs will be amortized ratably over the remaining term of the award.

The following table provides a reconciliation of liabilities measured at fair value using significant unobservable inputs (Level 3) as of December 31, 2022 (in thousands):

	Level 3 Liabilities
Balance at December 31, 2020	$	1,668
Straight-line recognition of liability classified equity award		1,028
Change in fair value measurement		(644	)
Balance at December 31, 2021	$	2,052
Straight-line recognition of liability classified equity award		483
Change in fair value measurement		(586	)
Reclassification to equity classified award		(1,949	)
Balance at December 31, 2022	$	—

Fair Value of Convertible Debt

The fair value, based on a quoted market price (Level 1), of the Company’s outstanding 0.75% Convertible Senior Notes due 2026 (the "2026 Notes") was approximately $288.8 million at December 31, 2022 and approximately $308.1 million at December 31, 2021. The fair value, based on a quoted market price (Level 1), of the Company’s outstanding OCEANEs was approximately $13.3 million at December 31, 2022 and approximately $14.1 million at December 31, 2021. See Note 6 for further information.

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Balance Sheet Details

12 Months Ended

Dec. 31, 2022

Balance Sheet Related Disclosures [Abstract]

Balance Sheet Details

4. Balance Sheet Details

Inventories

Inventories consist of the following (in thousands):

	December 31,
	2022		2021
Raw materials	$	13,928	$	14,671
Work-in-process		3,032		5,712
Finished goods		84,561		71,320
Inventories	$	101,521	$	91,703

Property and Equipment, net

Property and equipment, net consist of the following (in thousands, except as indicated):

	Useful Life	December 31,
	(in years)	2022			2021
Surgical instruments	4	$	158,906		$	130,432
Machinery and equipment	7		9,502			11,092
Computer equipment	3		4,753			5,694
Office furniture and equipment	5		4,760			3,861
Leasehold improvements	various		2,965			1,754
Construction in progress	n/a		15,360			7,292
			196,246			160,125
Less: accumulated depreciation			(94,294	)		(72,724	)
Property and equipment, net		$	101,952		$	87,401

Total depreciation expense was $31.0 million, $20.3 million and $9.2 million for the years ended December 31, 2022, 2021 and 2020 respectively. At December 31, 2022 and 2021, assets recorded under financing leases of $0.4 million were included in the machinery and equipment balance. Amortization of assets under financing leases is included in depreciation expense.

Goodwill

The change in the carrying amount of goodwill during the year ended December 31, 2022 included the following (in thousands):

December 31, 2021	$	39,689
Purchase price allocation adjustment		1,628
Foreign currency fluctuation		(1,542	)
December 31, 2022	$	39,775

Intangible Assets, net

Intangible assets, net consist of the following (in thousands, except as indicated):

	Remaining Weighted Avg. Useful Life	Gross		Accumulated			Intangible
December 31, 2022:	(in years)	Amount		Amortization			Assets, net
Developed product technology	7	$	75,896	$	(13,420	)	$	62,476
Trademarks and trade names	8		5,421		(987	)		4,434
Customer relationships	4		14,240		(6,906	)		7,334
Distribution network	2		2,413		(2,041	)		372
Total amortized intangible assets			97,970		(23,354	)		74,616
Software in development	n/a		2,503					2,503
In-process research and development	n/a		5,662					5,662
Total intangible assets		$	106,135	$	(23,354	)	$	82,781
		.
	Remaining Weighted Avg. Useful Life	Gross		Accumulated			Intangible
December 31, 2021:	(in years)	Amount		Amortization			Assets, net
Developed product technology	12	$	74,543	$	(5,768	)	$	68,775
Trademarks and trade names	10		5,732		(477	)		5,255
Customer relationships	5		14,732		(5,264	)		9,468
Distribution network	3		2,413		(1,840	)		573
Total amortized intangible assets			97,420		(13,349	)		84,071
In-process research and development	n/a		1,203					1,203
Total intangible assets		$	98,623	$	(13,349	)	$	85,274

During the year ended December 31, 2021, in connection with the expiration and termination of the product manufacture and supply agreement (the “Supply Agreement”) with Globus Medical Ireland, Ltd., a subsidiary of Globus Medical, Inc., and its affiliated entities (collectively “Globus Medical”), the Company wrote off $32.6 million in fully amortized intangible assets. During the year ended December 31, 2021, in connection with the Company’s acquisition of EOS, as further described in Note 2, the Company recorded additions to definite-lived intangible assets in the amount of $71.5 million.

Total expense related to amortization of intangible assets was $10.2 million, $6.4 million and $1.8 million for the years ended December 31, 2022, 2021 and 2020, respectively. Software in development assets begin amortizing when the projects are complete and the assets are ready for their intended use. In-process research and development assets begin amortizing when the related products reach full commercial launch.

Future amortization expense related to intangible assets as of December 31, 2022 is as follows (in thousands):

Year Ending December 31,
2023	$	12,402
2024		12,300
2025		10,811
2026		10,811
2027		8,939
Thereafter		19,353
Total	$	74,616

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consist of the following (in thousands):

	December 31,
	2022		2021
Payroll and payroll related	$	19,764	$	18,449
Commissions and sales milestones		17,444		12,420
Accrued legal expenses		8,345		4,290
Royalties		4,758		3,466
Orthotec litigation settlement obligation		3,968		4,400
Inventory in -transit		3,548		2,089
Debt issuance costs		2,690		—
Administration fees		1,912		1,698
Other taxes payable		1,955		3,004
Professional fees		1,238		394
Interest		1,122		1,045
Other		5,638		4,294
Total accrued expenses and other current liabilities	$	72,382	$	55,549

Other Long-Term Liabilities

Other long-term liabilities consist of the following (in thousands):

	December 31,
	2022		2021
Royalties	$	5,739	$	5,833
Orthotec litigation settlement obligation		—		3,587
Income tax-related liabilities		980		1,522
Contract liabilities		3,047		2,897
Other		1,777		3,222
Other long-term liabilities	$	11,543	$	17,061

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Contract Liabilities

12 Months Ended

Dec. 31, 2022

Contract with Customer, Liability [Abstract]

Contract Liabilities

5. Contract Liabilities

The Company had current and non-current contract liabilities totaling $12.0 million and 3.0 million, respectively, as of December 31, 2022. The Company had current and non-current contract liabilities totaling $15.3 million and $2.9 million, respectively, as of December 31, 2021. The non-current contract liabilities balance is included in other long-term liabilities on the consolidated balance sheets. Contract liabilities relates to contracts with customers for which partial or complete payment of the transaction price has been received from the customer and the related obligations must be completed before revenue can be recognized. These amounts primarily relate to undelivered equipment, services, or maintenance agreements. The Company recognized $21.6 million of revenue from its contract liabilities during the year ended December 31, 2022, of which $12.9 million was recognized from the beginning contract liabilities balance. The Company recognized $14.6 million of revenue from its contract liabilities during the years ended December 31, 2021. There were no contract liabilities recognized during the year ended December 31, 2020. The opening and closing balances of the Company’s contract liabilities are as follows (in thousands):

Balance at December 31, 2021	$	18,151
Payments received		19,494
Revenue recognized		(21,581	)
Foreign currency fluctuation		(1,061	)
Balance at December 31 2022	$	15,003

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Debt

12 Months Ended

Dec. 31, 2022

Debt Disclosure [Abstract]

Debt

6. Debt

Revolving Credit Facility

In September 2022, the Company entered into a revolving credit facility (the “Revolving Credit Facility”) with entities affiliated with MidCap Financial Trust (“MidCap”). The Revolving Credit Facility provides up to $50.0 million in borrowing capacity to the Company based on a borrowing base. The borrowing base is calculated based on certain accounts receivable and inventory assets. The Company may request a $25.0 million increase in the Revolving Credit Facility for a total commitment of up to $75.0 million. The Revolving Credit Facility matures on the earlier of September 29, 2027, or 90 days prior to the final maturity date of the Company’s 2026 Notes, as defined below. As of December 31, 2022, the outstanding balance under the Revolving Credit Facility was $35.3 million. In January 2023, the Company repaid $27.5 million of the outstanding balance.

In conjunction with obtaining the Revolving Credit Facility, the Company incurred $1.4 million in debt issuance costs. These costs were capitalized to other assets on the consolidated balance sheets and are being amortized over the life of the Revolving Credit Facility. As of December 31 2022, debt issuance costs, net of accumulated amortization, associated with the Revolving Credit Facility were $1.3 million.

The outstanding loans bear interest at the sum of Term Secured Overnight Financing Rate, a rate per annum equal to the secured overnight financing rate for such SOFR business day ("SOFR"), plus 3.5% per annum. The interest rate as of December 31, 2022 was 7.7%. The loan agreements include an unused line fee, which is calculated as 0.5% per annum of either the unused Revolving Credit Facility or a minimum balance. Interest and unused line fees incurred are due and capitalized to the outstanding principal balance monthly. The Company recognized interest expense on the Revolving Credit Facility of $0.2 million during the year ended December 31, 2022, which includes $0.1 million for the amortization of debt issuance costs. Upon the Revolving Credit Facility’s maturity, any outstanding principal balance, unpaid accrued interest, and all other obligations under the Revolving Credit Facility will be due and payable.

The Revolving Credit Facility contains a lockbox arrangement clause requiring the Company to maintain a lockbox bank account. If the revolving loan availability is less than 30% of the revolving loan limit for five consecutive business days, or the Company is in default, MidCap will apply funds collected from the Company's lockbox account to reduce the outstanding balance of the Revolving Credit Facility. As of December 31, 2022, the Company's loan availability level has not activated lockbox deductions, nor is it expected to for the next 12 months; therefore, the Company has determined that the outstanding balance under the Revolving Credit Facility is long-term debt on the consolidated balance sheets.

The outstanding loans are secured by substantially all of the Company’s assets with the priority interest of the lenders subject to terms of a customary intercreditor agreement in connection with the term loan described in Note 14, Subsequent Events. The loan agreements and other ancillary documents contain customary representations and warranties and affirmative and negative covenants. Under the loan agreements, the Company is required to maintain a minimum level of liquidity. The loan agreements also include certain events of default, and upon the occurrence of such events of default, all outstanding loans under the Revolving Credit Facility may be accelerated and/or the lenders’ commitments terminated. The Company is in compliance with all required financial covenants as of December 31, 2022.

0.75% Convertible Senior Notes due 2026

In August 2021, the Company issued $316.3 million aggregate principal amount of unsecured 2026 Notes with a stated interest rate of 0.75% and a maturity date of August 1, 2026. Interest on the 2026 Notes is payable semi-annually in arrears on February 1 and August 1 of each year, beginning on February 1, 2022. The net proceeds from the sale of the 2026 Notes were approximately $306.2 million after deducting the initial purchasers’ offering expenses and before cash used for the privately negotiated capped call transactions (the "Capped Call Transactions"), as described below, the repurchase of stock, as described in Note 9, and the repayment of the outstanding unsecured term loan with Squadron Medical Finance Solutions, LLC (the “Squadron Medical Term Loan") and outstanding obligation under the Inventory Financing Agreement, as described below. The 2026 Notes do not contain any financial covenants.

The 2026 Notes are convertible into shares of the Company’s common stock based upon an initial conversion rate of 54.5316 shares of the Company’s common stock per $1,000 principal amount of 2026 Notes (equivalent to an initial conversion price of approximately $18.34 per share). The conversion rate will be subject to adjustment upon the occurrence of certain specified events, including certain distributions and dividends to all or substantially all of the holders of the Company’s common stock. Based on the terms of the 2026 Notes, when a conversion notice is received, the Company has the option to pay or deliver cash, shares of the Company’s common stock, or a combination thereof.

Holders of the 2026 Notes have the right to convert their notes in certain circumstances and during specified periods. Prior to the close of business on the business day immediately preceding February 2, 2026, holders may convert all or a portion of their 2026 Notes only under the following circumstances: (1) during any calendar quarter (and only during such calendar quarter) commencing after the calendar quarter ending on September 30, 2021, if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; (2) during the 5 consecutive business days immediately after any 10 consecutive trading day period (the “measurement period”) in which the trading price per $1,000 principal amount of 2026 Notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate on each such trading day; or (3) upon the occurrence of specified corporate events. From and after February 2, 2026, holders of the 2026 Notes may convert their notes at any time at their election until the close of business on the second scheduled trading day immediately before the maturity date. As of December 31, 2021, none of the conditions permitting the holders of the 2026 Notes to convert have been met. The 2026 Notes are classified as long-term debt on the consolidated balance sheets as of December 31, 2022.

The 2026 Notes are redeemable, in whole or in part, at the Company’s option at any time, and from time to time, on or after August 6, 2024 and on or before the 40th scheduled trading day immediately before the maturity date, at a cash redemption price equal to the principal amount of the 2026 Notes to be redeemed, plus accrued and unpaid interest, if any, but only if the last reported sale price per share of the Company’s common stock exceeds 130% of the conversion price for a specified period of time. In addition, calling any of the notes for redemption will constitute a “make-whole fundamental change” with respect to that note, in which case the conversion rate applicable to the conversion of that note will be increased in certain circumstances if such note is converted after it is called for redemption.

If a fundamental change occurs prior to the maturity date, holders may require the Company to repurchase all or a portion of their 2026 Notes for cash at a price equal to 100% of the principal amount of the 2026 Notes plus accrued and unpaid interest. No principal payments are otherwise due on the 2026 Notes prior to maturity.

The Company recorded the full principal amount of the 2026 Notes as a long-term liability net of deferred issuance costs. The annual effective interest rate for the 2026 Notes is 1.4%. The Company recognized interest expense on the 2026 Notes of $4.4 million and $1.7 million during the years ended December 31, 2022 and 2021, respectively, which includes $2.0 million and $0.8 million for the amortization of debt issuance costs during the years ended December 31, 2022 and 2021, respectively. The Company uses the if-converted method for assumed conversion of the 2026 Notes to compute the weighted average shares of common stock outstanding for diluted earnings per share, if applicable.

The outstanding principal amount and carrying value of the 2026 Notes consist of the following (in thousands):

	December 31, 2022
Principal	$	316,250
Unamortized debt issuance costs		(7,290	)
Net carrying value	$	308,960

Capped Call Transactions

In connection with the offering of the 2026 Notes, the Company entered into the Capped Call Transactions with certain financial institutions. The Capped Call Transactions are expected generally to reduce the potential dilution and/or offset the cash payments the Company is required to make in excess of the principal amount of the 2026 Notes upon conversion of the 2026 Notes in the event that the market price per share of the Company’s common stock is greater than the strike price of the Capped Call Transactions with such reduction and/or offset subject to a cap. The Capped Call Transactions have an initial cap price of $27.68 per share of the Company’s common stock, which represents a premium of 100% over the last reported sale price of the Company’s common stock on August 5, 2021, and is subject to certain adjustments under the terms of the Capped Call Transactions. Collectively, the Capped Call Transactions cover, initially, the number of shares of the Company’s common stock underlying the 2026 Notes, subject to anti-dilution adjustments substantially similar to those applicable to the 2026 Notes. The cost of the Capped Call Transactions was approximately $39.9 million.

The Capped Call Transactions are separate transactions and are not part of the terms of the 2026 Notes and will not affect any holder’s rights under the notes. Holders of the 2026 Notes will not have any rights with respect to the Capped Call Transactions.

The Capped Call Transactions meet all of the applicable criteria for equity classification and, as a result, the related $39.9 million cost was recorded as a reduction to additional paid-in capital on the Company’s consolidated statements of shareholders’ (deficit) equity for the year ended December 31, 2021.

OCEANE Convertible Bonds

On May 31, 2018, EOS issued 4,344,651 OCEANEs, denominated in Euros, due May 2023 for aggregate gross proceeds of $34.3 million (€29.5 million). The OCEANEs are unsecured obligations of EOS, rank equally with all other unsecured and unsubordinated obligations of EOS, and pay interest at a rate equal to 6% per year, payable semiannually in arrears on May 31 and November 30 of each year, beginning November 30, 2018. Unless either earlier converted or repurchased, the OCEANEs will mature on May 31, 2023. Interest expense was $0.8 million for the year ended December 31, 2022 and $0.7 million from the date of the EOS acquisition to December 31, 2021.

As discussed in Note 2, in connection with the Offer to acquire EOS, the Company purchased 2,486,135 OCEANEs, and as such, 1,858,516 OCEANEs with a principal amount of $15.3 million (€12.6 million) remained outstanding at the time of acquisition.

The OCEANEs are convertible by their holders into new EOS Shares or exchangeable for existing EOS Shares, at the Company’s option, at an initial conversion rate of one share per OCEANE, and the initial conversion rate is subject to customary anti-dilution adjustments. The OCEANEs are convertible at any time until the seventh business day prior to maturity or seventh business day prior to an earlier redemption of the OCEANE. If the number of shares calculated is not a whole number, the holder may request allocation of either the whole number of shares immediately below the number and receive an amount in cash equal to the remaining fractional share value, or the whole number of shares immediately above the number and pay an amount in cash equal to the remaining fractional share value. Holders of the OCEANEs have the option to convert all or any portion of such OCEANEs, regardless of any conditions, at any time until the close of seventh business day immediately preceding the maturity date.

EOS has a right to redeem all of the OCEANEs at its option any time after June 20, 2021 at a cash redemption price equal to the par value of the OCEANEs plus accrued and unpaid interest if the product of the volume-weighted-average price of the shares and the conversion ratio as specified in the agreement in effect on each trading day exceeds 150% of the par value of each OCEANE on each of at least twenty consecutive trading days during any forty consecutive trading days, if EOS redeems the OCEANEs when the number of OCEANEs outstanding is 15% or less of the number of OCEANEs originally issued, or the occurrence of a tender or exchange offer. As a result of the Company’s acquisition of EOS, the OCEANEs are now convertible into new shares of EOS, as a wholly-owned subsidiary of the Company. OCEANE holders can redeem the notes upon the occurrence of an event of default or upon the occurrence of a change of control. In July 2021, in connection with the change of control, holders of 25,971 OCEANEs chose to redeem their bonds for approximately $0.2 million (€0.2 million).

The carrying value of the outstanding OCEANEs was $13.3 million (€12.5 million) as of December 31, 2022.

Other Debt Agreements

In January and April 2021, prior to the acquisition, EOS obtained two loan agreements, denominated in Euros, under French government sponsored COVID-19 relief initiatives (pret garanti par l’etat or “PGE” loans). Each loan contains a 12-month term and 90% of the principal balance of each loan is state guaranteed. The cost of the state guaranty is 0.25% of the loan amounts. The loans carry an interest-free rate from the commercial banks (€3.3 million) and a 1.75% interest from the lender (€1.5 million). The loan capital and loan guaranty costs are payable in full at the end of the 12-month term or the loan may be extended up to 5 additional years. If the Company chooses to extend the debt, the election must be made by the Company between months 8 and 11 of the 12-month term. The extension will carry an interest rate at the banks’ refinancing cost, to be applied from year 2 to year 6 and an increased state guaranty cost (50 to 200 bps, as per a scale with company size and extension year).

In February 2022, the Company extended the maturity for each loan agreement to 2027. Each loan has a 12-month period from the applicable extension date where interest only payments will occur (the “Interest Only Period”). Following the Interest Only Period, monthly and quarterly installments of principal and interest under each loan agreement will be due until the original principal amounts and applicable interest is fully repaid in 2027. The outstanding obligation under each loan as of December 31, 2022 was $3.5 million and $1.6 million (€3.3 million and €1.5 million) at weighted average interest rates of 0.98% and 1.25%, respectively, and weighted average costs of the state guaranty of 0.69% and 1.00%, respectively.

Debt consists of the following (in thousands):

	December 31,
	2022			2021
2026 Notes	$	316,250		$	316,250
OCEANEs		13,333			14,113
Other notes payable		1,869			386
EOS PGE Loans		5,046			5,341
Revolving Credit Facility		35,251			—
Total		371,749			336,090
Less: debt discount		(7,290	)		(9,259	)
Total		364,459			326,831
Less: current portion of long-term debt		(14,948	)		(342	)
Total long-term debt, net of current portion	$	349,511		$	326,489

Principal payments on debt are as follows as of December 31, 2022 (in thousands):

2023	$	14,957
2024		1,731
2025		1,693
2026		317,513
2027		35,855
Total		371,749
Less: debt discount		(7,290	)
Total		364,459
Less: current portion of long-term debt		(14,948	)
Long-term debt, net of current portion	$	349,511

Paycheck Protection Loan

On April 23, 2020, the Company received the proceeds from a loan in the amount of $4.3 million (the “PPP Loan”) from Silicon Valley Bank, as lender, pursuant to the Paycheck Protection Program (“PPP”) of the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”). The Company used the loan proceeds for purposes consistent with the terms of the PPP and applied for forgiveness of the entire $4.3 million loan balance, which was granted in July 2021. The Company recorded a gain on debt extinguishment of $4.3 million, which is included in loss on debt extinguishment, net, on the consolidated statements of operations for the year ended December 31, 2021.

Squadron Medical Credit Agreement

On November 6, 2018, the Company entered into the Squadron Medical Term Loan that was subsequently amended March 2019, May 29, 2020 and December 16, 2020 to expand the availability of additional term loans, extend the maturity, remove all financial covenant requirements and, in the December 2020 amendment, to incorporate a debt exchange. On December 16, 2020, the Company amended the Squadron Medical Term Loan to expand the credit facility by an additional $15.0 million and to extend the maturity of the Squadron Medical Term Loan to June 30, 2026. In conjunction with the Squadron Medical Term Loan amendment on December 16, 2020, the Company entered into a debt exchange agreement whereby the Company exchanged $30.0 million of the Company’s outstanding debt obligations pursuant to the Squadron Medical Term Loan dated as of November 6, 2018, as amended, for the issuance of 2,700,270 shares of the Company’s Common Stock to Squadron Capital LLC and a participant lender, based on a price of $11.11 per share. The debt exchange resulted in additional debt issuance costs of $3.8 million calculated as the difference between the Company’s stock price on the date of issuance and the issuance price.

The Company accounted for the March 2019, May 2020, and December 2020 amendments of the Squadron Medical Term Loan as debt modifications with continued amortization of the existing and inclusion of the new debt issuance costs amortized into interest expense utilizing the effective interest rate method. The Company determined that the $30.0 million pre-payment associated with the December 16, 2020 amendment should be accounted for as a partial extinguishment of the November 6, 2018 Squadron Medical Term Loan, as amended. As a result of the partial extinguishment the Company elected, as an accounting policy in accordance with ASC 470-50-40-2, to write off a proportionate amount of the unamortized fees at the time that the financing was partially settled in accordance with the terms of the Squadron Medical Term Loan dated November 6, 2018, as amended. The unamortized debt issuance costs were allocated between the remaining original loan balance and the portion of the loan paid down on a pro-rata basis. At the time of prepayment, the Company recorded a loss on extinguishment of $6.1 million, which was included in loss on debt extinguishment, net, on the consolidated statements of operations for the year ended December 31, 2020 and capitalized $3.8 million in non-cash debt issuance closing costs.

On August 10, 2021, the Company terminated and repaid all obligations under the Squadron Medical Term Loan, which consisted of the $45.0 million outstanding principal and $0.2 million accrued interest. As a result of the early termination of the Squadron Medical Term Loan, the Company recorded a loss on debt extinguishment associated with the unamortized debt issuance costs of $11.7 million, which is included in loss on debt extinguishment, net, on the consolidated statements of operations for the year ended December 31, 2021.

In connection with the initial 2018 Squadron Medical Term Loan and subsequent amendments, the Company issued an aggregate of 6,759,530 warrants to Squadron Medical and a participant lender. See Note 9 for further information on the warrants issued.

Inventory Financing

In November 2018, the Company entered into an Inventory Financing Agreement with an inventory supplier whereby the Company was originally permitted to draw up to $3.0 million for the purchase of inventory. In November 2020 and May 2021, the Company amended the Inventory Financing Agreement with the supplier to increase the available draw to $6.0 million and then to $9.0 million for the purchase of inventory. On August 10, 2021, the Company terminated and repaid all obligations under the Inventory Financing Agreement, which consisted of $8.1 million outstanding principal and $0.1 million accrued interest.

MidCap Facility Agreement

On May 29, 2020, the Company repaid in full all amounts outstanding under the Amended Credit Facility with MidCap Funding IV, LLC, including the outstanding balance of $9.6 million, which consisted of outstanding principal and accrued interest. As a result of the early termination of the Credit Facility with MidCap Funding IV, LLC, the Company recorded a loss on debt extinguishment in its consolidated statements of operations for the year ended December 31, 2020.

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2022

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

7. Commitments and Contingencies

Leases

The Company determines if an arrangement is a lease at inception by assessing whether there is an identified asset and whether the contract conveys the right to control the use of the identified asset in exchange for consideration over a period of time. If both criteria are met, the Company records the associated lease liability and corresponding ROU asset upon commencement of the lease using a discount rate based the incremental borrowing rate of interest that the Company would borrow on a collateralized basis for an amount equal to the lease payments in a similar economic environment. Any short-term leases defined as twelve months or less or month-to-month leases are excluded and continue to be expensed each month. Total costs associated with these short-term leases is immaterial to all years presented.

The Company leases office and storage facilities and equipment under various operating and financing lease agreements. The initial terms of these leases range from 1 to 10 years and generally provide for periodic rent increases. The Company’s lease agreements do not contain any material variable lease payments, residual value guarantees or material restrictive covenants. The Company aggregates all lease and non-lease components for each class of underlying assets into a single lease component and variable charges for common area maintenance and other variable costs are recognized as expense as incurred. Total variable costs associated with leases for the year ended December 31, 2022 were immaterial. The Company had an immaterial amount of financing leases as of December 31, 2022, which is included in property and equipment, net, accrued expenses and other current liabilities, and other long-term liabilities, on the consolidated balance sheets.

The Company occupies 121,541 square feet of office space as its headquarters in Carlsbad, California. On December 4, 2019, the Company entered into a 10-year operating lease that commenced on February 1, 2021 and will terminate on January 31, 2031, subject to two sixty-month options to renew which are not reasonably certain to be exercised. Base rent under the building lease increases annually by 3% throughout the remainder of the lease. On May 11, 2022, the Company entered into a lease amendment for the build out of additional space within the building which resulted in a lease modification increasing the ROU asset and lease liability.

Future minimum annual lease payments for all operating leases of the Company are as follows as of December 31, 2022 (in thousands):

2023	$	4,937
2024		5,033
2025		5,019
2026		5,080
2027		5,121
Thereafter		13,057
Total undiscounted lease payments		38,247
Less: imputed interest		(6,843	)
Operating lease liability		31,404
Less: current portion of operating lease liability		(4,842	)
Operating lease liability, less current portion	$	26,562

The Company’s weighted average remaining lease term and weighted average discount rate as of December 31, 2022 and December 31, 2021 are as follows:

	December 31,
	2022			2021
Weighted average remaining lease term (years)		7.7			8.6
Weighted average discount rate		5.5	%		8.5	%

Information related to the Company’s operating leases is as follows (in thousands):

	Year Ended December 31,
	2022		2021		2020
Rent expense	$	4,643	$	4,482	$	1,300
Cash paid for amounts included in measurement of lease liabilities	$	4,409	$	1,795	$	1,400

Purchase Commitments

The Company is obligated to certain minimum inventory purchase commitment requirements with a third-party supplier through December 2026. As of December 31, 2022, the remaining minimum purchase commitment required by the Company under the agreement was $27.4 million.

Litigation

The Company is and may become involved in various legal proceedings arising from its business activities. While management is not aware of any litigation matter that in and of itself would have a material adverse impact on the Company’s consolidated results of operations, cash flows or financial position, litigation is inherently unpredictable, and depending on the nature and timing of a proceeding, an unfavorable resolution could materially affect the Company’s future consolidated results of operations, cash flows or financial position in a particular period. The Company assesses contingencies to determine the degree of probability and range of possible loss for potential accrual or disclosure in the Company’s consolidated financial statements. An estimated loss contingency is accrued in the Company’s consolidated financial statements if it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Because litigation is inherently unpredictable and unfavorable resolutions could occur, assessing contingencies is highly subjective and requires judgments about future events. When evaluating contingencies, the Company may be unable to provide a meaningful estimate due to a number of factors, including the procedural status of the matter in question, the presence of complex or novel legal theories, and/or the ongoing discovery and development of information important to the matters. In addition, damage amounts claimed in litigation against the Company may be unsupported, exaggerated or unrelated to reasonably possible outcomes, and as such are not meaningful indicators of the Company’s potential liability.

In February 2018, NuVasive, Inc. filed suit against the Company in the United States District Court for the Southern District of California (NuVasive, Inc. v. Alphatec Holdings, Inc. et al., Case No. 3:18-cv-00347-CAB-MDD (S.D. Cal.)), alleging that certain of the Company’s products, infringed, or contributed to the infringement of, U.S. Patent Nos. 7,819,801, 8,355,780, 8,361,156, 8,439,832, 8,753,270, 9,833,227 and U.S. Design Patent Nos. D652,519 and D750,252. In May 2018, the Court dismissed the asserted design patents with prejudice. In September 2018, NuVasive filed an Amended Complaint, asserting infringement claims of U.S. Patent Nos. 9,924,859, 9,974,531 and 8,187,334. In December 2018, the Company filed a petition with the Patent Trial and Appeal Board (“PTAB”) challenging the validity of certain claims of the ’156 and ’334 Patents. In July 2020, PTAB ruled that all challenged claims of the ‘156 Patent were valid, that several claims of the ‘334 Patent were invalid and that other challenged claims of the ‘334 Patent valid. In February 2022, the U.S. Court of Appeals for the Federal Circuit affirmed that ruling. In August 2021, the Court found the ’156 Patent invalid and, in September 2021, NuVasive elected not to proceed with its remaining claims for the ’334 Patent, ’780 Patent, ’270 Patent, ’227 Patent and ’859 Patent. Trial on the remaining patents concluded on March 11, 2022. On March 15, 2022, the Court ordered the parties to participate in post-trial settlement conference. In June 2022, the parties reached a final resolution of all matters and executed a confidential settlement agreement. The Court dismissed the action with prejudice. The outcome of these proceedings did not have any material adverse effect on the Company’s consolidated results of operations, cash flows or financial position.

Indemnifications

In the normal course of business, the Company enters into agreements under which it occasionally indemnifies third-parties for intellectual property infringement claims or claims arising from breaches of representations or warranties. In addition, from time to time, the Company provides indemnity protection to third-parties for claims relating to past performance arising from undisclosed liabilities, product liabilities, environmental obligations, representations and warranties, and other claims. In these agreements, the scope and amount of remedy, or the period in which claims can be made, may be limited. It is not possible to determine the maximum potential amount of future payments, if any, due under these indemnities due to the conditional nature of the obligations and the unique facts and circumstances involved in each agreement.

In October 2017, NuVasive filed a lawsuit in Delaware Chancery Court against Mr. Miles, the Company’s Chairman and CEO, who was a former officer and board member of NuVasive. The Company itself was not initially a named defendant in this lawsuit; however, in June 2018, NuVasive amended its complaint to add the Company as a defendant. In October 2018, the Delaware Court ordered that NuVasive advance legal fees for Mr. Miles’ defense in the lawsuit, as well as Mr. Miles’ legal fees incurred in pursuing advancement of his fees, pursuant to an indemnification agreement between NuVasive and Mr. Miles. As of December 31, 2022, the Company has not recorded any liability on the consolidated balance sheet related to this matter.

Royalties

The Company has entered into various intellectual property agreements requiring the payment of royalties based on the sale of products that utilize such intellectual property. These royalties primarily relate to products sold by Alphatec Spine and are based on fixed fees or calculated either as a percentage of net sales or on a per-unit sold basis. Royalties are included on the accompanying consolidated statements of operations as a component of cost of sales.

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Orthotec Settlement

12 Months Ended

Dec. 31, 2022

Commitments and Contingencies Disclosure [Abstract]

Orthotec Settlement

8. Orthotec Settlement

On September 26, 2014, the Company entered into a Settlement and Release Agreement, dated as of August 13, 2014, by and among the Company and its direct subsidiaries, including Alphatec Spine, Inc., Alphatec Holdings International C.V., Scient'x S.A.S. and Surgiview S.A.S.; HealthpointCapital, LLC, HealthpointCapital Partners, L.P., HealthpointCapital Partners II, L.P., John H. Foster and Mortimer Berkowitz III; and Orthotec, LLC and Patrick Bertranou, (the “Settlement Agreement”). Pursuant to the Settlement Agreement, the Company agreed to pay Orthotec, LLC $49.0 million in cash, including initial cash payments totaling $1.75 million, which the Company paid in March 2014, and an additional lump sum payment of $15.75 million, which the Company paid in April 2014. The Company agreed to pay the remaining $31.5 million in 28 quarterly installments of $1.1 million and one additional quarterly installment of $0.7 million, commencing October 1, 2014. The unpaid balance of the principal amount due accrues interest at the rate of 7% per year until the balance is paid in full. The accrued but unpaid interest will be paid in quarterly installments of $1.1 million (or the full amount of the accrued but unpaid interest if less than $1.1 million) following the full payment of the $31.5 million in quarterly installments.

The payments set forth above are guaranteed by Stipulated Judgments held against the Company, HealthpointCapital Partners, L.P., HealthpointCapital Partners II, L.P., HealthpointCapital, LLC, John H. Foster and Mortimer Berkowitz III and, in the event of a default, will be entered and enforced against these entities and/or individuals in that order. In September 2014, the Company and HealthpointCapital entered into an agreement for joint payment of settlement whereby HealthpointCapital agreed to contribute $5.0 million to the $49.0 million settlement amount. During the year ended December 31, 2021, HealthpointCapital completed its contribution to the settlement amount.

As of December 31, 2022, the Company has made installment payments in the aggregate of $53.4 million, with a remaining outstanding balance of $4.1 million (including imputed interest). The Settlement Agreement provides for mutual releases of all claims in the Orthotec, LLC v. Surgiview, S.A.S, et al. matter in the Superior Court of California, Los Angeles County and all other related litigation matters involving the Company and its directors and affiliates.

A reconciliation of the total net settlement obligation is as follows (in thousands):

	December 31,
	2022		2021
Litigation settlement obligation - short-term portion	$	3,968	$	4,400
Litigation settlement obligation - long-term portion		—		3,587
Total		3,968		7,987
Future imputed interest		96		478
Total litigation settlement obligation	$	4,064	$	8,465

The short-term portion of the litigation settlement obligation is included in accrued expenses and other current liabilities on the consolidated balance sheets.

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Equity

12 Months Ended

Dec. 31, 2022

Equity [Abstract]

Equity

9. Equity

Common Stock

There were 200,000,000 shares of common stock authorized at December 31, 2022 and 2021. On March 1, 2021 the Company completed the sale of 12,421,242 shares of common stock for gross proceeds of $138.0 million, and net proceeds of approximately $131.8 million, net of $6.2 million in fees. On October 16, 2020 the Company completed the sale of 13,142,855 shares of common stock for gross proceeds of $115.0 million, resulting in net proceeds of approximately $107.7 million, net of $7.3 million in fees.

On August 3, 2021, the Company’s Board of Directors authorized the Company to repurchase an aggregate of up to $25.0 million of shares of the Company’s common stock. On August 10, 2021, The Company repurchased 1,806,358 shares of its common stock for approximately $25.0 million in privately negotiated transactions. There were no repurchases of common stock during the years ended December 31, 2022 or 2020.

Redeemable Preferred Stock

The Company issued shares of redeemable preferred stock in connection with its initial public offering in June 2006. As of December 31, 2022, and 2021, the redeemable preferred stock carrying value was $23.6 million and there were 20 million shares of redeemable preferred stock authorized. The redeemable preferred stock is not convertible into common stock but is redeemable at $9.00 per share, (i) upon the Company’s liquidation, dissolution or winding up, or the occurrence of certain mergers, consolidations or sales of all or substantially all of the Company’s assets, before any payment to the holders of the Company’s common stock, or (ii) at the Company’s option at any time. Holders of redeemable preferred stock are generally not entitled to vote on matters submitted to the stockholders, except with respect to certain matters that will affect them adversely as a class and are not entitled to receive dividends. The carrying value of the redeemable preferred stock was $7.11 per share at December 31, 2022 and 2021. The redeemable preferred stock is presented separately from stockholders’ equity in the consolidated balance sheets and any adjustments to its carrying value up to its redemption value of $9.00 per share are reported as a dividend.

2017 PIPE Warrants

The 2017 common stock warrants (the “2017 PIPE Warrants”) had a five-year life and were exercisable by cash exercise only. During the year ended December 31, 2022, there were approximately 2,312,000 2017 PIPE Warrant exercises for total cash proceeds of $3.5 million. During the year ended December 31, 2021, there were approximately 795,000 2017 PIPE Warrant exercises, for total cash proceeds of $1.6 million. As of December 31, 2022, the 2017 PIPE Warrants were expired, and no 2017 PIPE Warrants remained outstanding.

2018 PIPE Warrants

The 2018 common stock warrants (the “2018 PIPE Warrants”) have a five-year life and are exercisable by cash or cashless exercise. During the year ended December 31, 2022, there were approximately 2,168,000 2018 PIPE Warrant exercises for total cash proceeds of $0.4 million. During the year ended December 31, 2021, there were approximately 2,901,000 2018 PIPE Warrant exercises for total cash proceeds of $1.5 million. A total of approximately 6,311,000 2018 PIPE Warrants remained outstanding as of December 31, 2022.

SafeOp Surgical Merger Warrants

The SafeOp common stock warrants (the “SafeOp Warrants”), have a five-year life and are exercisable by cash or cashless exercise. During the year ended December 31, 2022, there were approximately 257,000 SafeOp Warrant cashless exercises. During the year ended December 31, 2021, there were approximately 970,000 SafeOp Surgical Merger Warrant exercises for total cash proceeds of $0.1 million. A total of approximately 938,000 SafeOp Warrants remained outstanding as of December 31, 2022.

Squadron Medical Warrants

In connection with debt financing entered into with Squadron Medical in 2018, and amended in 2019 and 2020, the Company issued common stock warrants to Squadron Medical and a participant lender (the “Squadron Medical Warrants”). The Squadron Medical Warrants expire in May 2027 and are exercisable by cash exercise. No Squadron Medical Warrants have been exercised as of December 31, 2022.

Executive Warrants

The Company issued warrants to Mr. Patrick S. Miles, the Company’s Chairman and Chief Executive Officer (the “Executive Warrants”). The Executive Warrants had a five-year term and are exercisable by cash or cashless exercise. In October 2022, the term was extended to seven years. No Executive Warrants have been exercised as of December 31, 2022.

A summary of all outstanding warrants as of December 31, 2022 is as follows (in thousands):

	Number of Warrants		Strike Price		Expiration
2018 PIPE Warrants		6,311	$	3.50	May 2023
SafeOp Surgical Merger Warrants		938	$	3.50	May 2023
2018 Squadron Medical Warrants		845	$	3.15	May 2027
2019 Squadron Medical Warrants		4,839	$	2.17	May 2027
2020 Squadron Medical Warrants		1,076	$	4.88	May 2027
Executive Warrants		1,327	$	5.00	December 2024
Other*		155	$	6.97	Various through February 2026
Total		15,491
*Represents weighted average strike price

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Stock Benefit Plans and Stock-Based Compensation

12 Months Ended

Dec. 31, 2022

Share-Based Payment Arrangement [Abstract]

Stock Benefit Plans and Stock-Based Compensation

10. Stock Benefit Plans and Stock-Based Compensation

2016 Equity Incentive Plan

In 2016 the Company adopted its 2016 Equity Incentive Plan (the “2016 Plan”), which replaced the Company’s 2005 Employee, Director and Consultant Stock Plan. On October 25, 2018, the Company’s Board of Directors adopted an amendment to the Company’s 2016 Equity Incentive Award Plan. The 2016 Plan allows for the grant of options, restricted stock, restricted stock unit awards and performance unit awards to employees, directors, and consultants of the Company. Upon its adoption, the 2016 Plan had 1,083,333 shares of common stock reserved for issuance. The Board of Directors determines the terms of the grants made under the 2016 Plan. Options granted under the 2016 Plan expire no later than ten years from the date of grant (five years for incentive stock options granted to holders of more than 10% of the Company’s voting stock). Options generally vest over a four-year period and may be immediately exercisable upon a change of control of the Company. The exercise price of incentive stock options may not be less than 100% of the fair value of the Company’s common stock on the date of grant. The exercise price of any option granted to a 10% stockholder may be no less than 110% of the fair value of the Company’s common stock on the date of grant. Restricted stock unit awards and performance unit awards generally vest over a three or four year period and vest immediately upon a change in control of the Company. On June 17, 2020, the Company’s shareholders approved an amendment to the Company’s 2016 Equity Incentive Award Plan which increased the shares of common stock available for issuance under the Equity Plan by 7,000,000 shares. As of December 31, 2022, approximately 791,000 shares of common stock remained available for issuance under the 2016 Plan. The 2016 Plan will expire in May 2026.

2016 Employment Inducement Award Plan

On October 4, 2016, the Company’s Board of Directors adopted the 2016 Employment Inducement Award Plan (the “Inducement Plan”). The Inducement Plan allows for the grant of options, restricted stock, restricted stock unit awards and performance unit awards to new employees of the Company by granting an award to such new employee as an inducement for the employee to begin employment with the Company. As of December 31, 2022 the Inducement Plan had approximately 477,000 shares of common stock reserved for issuance, which may only be granted to an employee who has not previously been an employee or member of the board of directors of the Company. The terms of the Inducement Plan are substantially similar to the terms of the Company’s 2016 Plan with two principal exceptions: (i) incentive stock options may not be granted under the Inducement Plan; and (ii) the annual compensation paid by the Company to specified executives will be deductible only to the extent that it does not exceed $1.0 million.

2019 Management Objective Strategic Incentive Plan

Under the 2019 Management Objective Strategic Incentive Plan, the Company is authorized to grant up to 500,000 shares of common stock to third-party individuals or entities that do not qualify under the Company’s other existing equity plans, with a maximum grant of 50,000 shares per participant. As of December 31, 2022, approximately 213,000 restricted shares and approximately 12,500 common stock warrants have been granted under the 2019 Management Objective Strategic Incentive Plan.

2017 Distributor Inducement Plan

Under the 2017 Distributor Inducement Plan, the Company is authorized to grant up to 1,000,000 shares of common stock to independent third-party sales agents whereby, upon the achievement of certain Company sales and/or distribution milestones the Company may grant to an independent sales agent shares of common stock or warrants to purchase shares of common stock. The warrants and restricted stock units issued under the plan are subject to time based or net sales-based vesting conditions. As of December 31, 2022, approximately 305,000 warrants and 414,000 shares of restricted common stock were granted under the 2017 Distributor Inducement Plan. As of December 31, 2022, approximately 295,000 warrants and approximately 392,000 shares of common stock were earned or issued.

2017 Development Services Plan

Under the 2017 Development Services Plan, the Company is authorized to issue up to 8,000,000 shares of common stock to third-parties upon the achievement of certain revenue milestones associated with certain developed royalty-bearing products. Future royalty payments for product and/or intellectual property development work may be paid in either cash or restricted shares of the Company’s common stock at the election of the developer, depending on the terms of the agreement. Each common stock issuance is contingent on net sales-based criteria and other provisions, including the satisfaction of applicable laws regarding the issuance of restricted shares to such developers. The Company has entered into Development Services Agreements for development of a wide variety of potential products and intellectual property, with the possibility of issuing shares of common stock. As of December 31, 2022, no shares have been issued and the majority of the agreements are not deemed probable of common stock issuance at this time. The Company recognizes stock-based compensation once the achievement of the performance criteria and vesting conditions are deemed probable.

Stock-Based Compensation Costs

The compensation cost that has been included in the Company’s consolidated statements of operations for all stock-based compensation arrangements is detailed as follows (in thousands):

	Year Ended December 31,
	2022		2021		2020
Cost of sales	$	2,597	$	737	$	512
Research and development		5,016		4,056		2,114
Sales, general and administrative		32,943		31,657		15,033
Total	$	40,556	$	36,450	$	17,659

Stock Options

A summary of the Company’s stock option activity under the Plans and related information is as follows (in thousands, except as indicated and per share data):

	Shares			Weighted average exercise price		Weighted average remaining contractual term (in years)		Aggregate intrinsic value
Outstanding at December 31, 2021		3,351		$	3.50
Exercised		(378	)		2.84
Forfeited		(57	)		13.83
Outstanding at December 31, 2022		2,916		$	3.38		4.58	$	26,783
Options vested and expected to vest at    December 31, 2022		2,916		$	3.38		4.58	$	26,783
Options exercisable at    December 31, 2022		2,849		$	3.22		4.51	$	26,550

The weighted-average grant-date fair value per share of stock options granted during the years ended December 31, 2021 and 2020 was $9.88 and $4.71, respectively. There were no stock options granted during the year ended December 31, 2022. The total intrinsic value of stock options exercised was $3.4 million, $6.8 million and $2.3 million for the years ended December 31, 2022, 2021 and 2020, respectively. The aggregate intrinsic value of options at December 31, 2022 is based on the Company’s closing stock price on the last business day of 2022 of $12.35 per share.

The weighted average assumptions used to compute the stock-based compensation costs for the stock options granted during the years ended December 31, 2021 and 2020 are as follows:

	Year Ended December 31,
		2021			2020
Risk-free interest rate			0.84	%		1.03	%
Expected dividend yield			—			—
Weighted average expected life (years)			6.07			6.08
Volatility			87.38	%		84.00	%

As of December 31, 2022, there was $0.3 million of unrecognized compensation expense for stock options which is expected to be recognized on a straight-line basis over a weighted average period of approximately 1.75 years.

Restricted Stock Units and Performance Based Restricted Stock Units

The following table summarizes information about the restricted stock units and performance-based restricted units activity (in thousands, except as indicated and per share data):

	Shares			Weighted average grant date fair value		Weighted average remaining recognition period (in years)
Unvested at December 31, 2021		8,703		$	6.34
Awarded		3,909			8.13
Vested		(3,316	)		4.68
Forfeited		(763	)		6.30
Unvested at December 31, 2022		8,533		$	6.63		1.43

The weighted-average grant-date fair value per share of awards granted during the years ended December 31, 2022, 2021 and 2020 was $8.13, $12.79 and $4.87, respectively. The total fair value of RSUs that vested during the years ended December 31, 2022, 2021 and 2020 was $35.2 million, $43.9 million and $13.1 million, respectively.

As of December 31, 2022, there was $41.4 million of unrecognized compensation expense for restricted stock awards, restricted stock units, and performance-based restricted units which is expected to be recognized on a straight-line basis over a weighted average period of approximately 1.43 years.

Employee Stock Purchase Plan

In 2007, the Company adopted the Alphatec Holdings, Inc. 2007 Amended and Restated Employee Stock Purchase Plan (the “ESPP”), which was first amended in May 2017. On June 16, 2021, the Company’s shareholders approved a second amendment to the ESPP which increased the amount of shares of common stock available for purchase under the ESPP by 500,000 shares.

The ESPP provides eligible employees with a means of acquiring equity in the Company at a discounted purchase price using their own accumulated payroll deductions. Under the terms of the ESPP, employees can elect to have up to 20% of their annual compensation, up to a maximum of $21,250 per year, withheld to purchase shares of Company common stock for a purchase price equal to 85% of the lower of the fair market value per share (at closing) of Company common stock on (i) the commencement date of the six-month offering period or (ii) the respective purchase date.

During the years ended December 31, 2022, 2021 and 2020 there were approximately 429,000, 227,000 and 379,000 shares of common stock, issued under the ESPP, respectively. The Company recognized $1.6 million, $1.1 million and $1.0 million in expense related to the ESPP for the years ended December 31, 2022, 2021 and 2020, respectively. As of December 31, 2022, approximately 119,000 shares were available under the ESPP for future issuance.

The Company estimates the fair value of shares issued to employees under the ESPP using the Black-Scholes option-pricing model. The assumptions used to estimate the fair value of stock purchase rights under the ESPP are as follows:

	Year Ended December 31,
	2022		2021		2020
Risk-free interest rate	0.07% - 4.54%		0.04% - 0.12%		0.12% - 1.58%
Expected dividend yield		—		—		—
Expected term (years)	0.50 - 0.60			0.50		0.50
Volatility	50.29% - 64.53%		49.98% - 78.37%		54.96% - 102.5%

Common Stock Reserved for Future Issuance

Common stock reserved for future issuance consists of the following (in thousands):

	December 31, 2022
Stock options outstanding		2,916
Unvested restricted stock units		8,533
Employee stock purchase plan		119
Senior convertible notes		17,246
Warrants outstanding		15,491
Authorized for future grant under the Distributor and    Development Services plans		281
Authorized for future grant under the Management    Objective Strategic Incentive Plan		274
Authorized for future grant under the Company    Equity plans		1,269
		46,129

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Income Taxes

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Income Taxes

11. Income Taxes

The components of the pretax income (loss) are presented in the following table (in thousands):

	Year Ended December 31,
	2022			2021			2020
U.S. Domestic	$	(146,627	)	$	(127,943	)	$	(78,849	)
Foreign		(5,382	)		(16,219	)		—
Net loss before taxes	$	(152,009	)	$	(144,162	)	$	(78,849	)

The components of the provision for income taxes are presented in the following table (in thousands):

	Year Ended December 31,
	2022			2021			2020
Current income tax provision:
Federal	$	(764	)	$	123		$	—
State		(140	)		166			100
Foreign		301			66			35
Total current		(603	)		355			135
Deferred income tax provision:
Federal		583			(159	)		(2	)
State		160			(32	)		12
Total deferred		743			(191	)		10
Total income tax provision	$	140		$	164		$	145

The provision for income taxes differs from the amount of income tax determined by applying the applicable U.S. statutory federal income tax rate to pretax loss as a result of the following differences:

	December 31,
	2022			2021			2020
Federal statutory rate		21.00	%		21.00	%		21.00	%
Adjustments for tax effects of:
State taxes, net		0.03			(0.07	)		(0.11	)
Stock-based compensation		(1.79	)		(0.48	)		(0.93	)
Rate differential		0.43			0.43			0.00
Foreign taxes		(0.05	)		(0.05	)		(0.04	)
Other permanent adjustments		0.21			0.08			(1.70	)
Federal uncertain tax positions		0.03			(0.08	)		0.00
Expiration of tax attribute		(1.60	)		0.00			0.00
Other		0.59			(0.13	)		(0.15	)
Valuation allowance		(18.94	)		(20.81	)		(18.25	)
Effective income tax rate		(0.09	)%		(0.11	)%		(0.18	)%

Significant components of the Company’s deferred tax assets and liabilities as of December 31, 2022 and 2021 are as follows (in thousands):

	December 31,
	2022			2021
Deferred tax assets:
Net operating losses	$	146,464		$	131,734
Interest		12,979			11,095
Capitalized research and development expenses		12,062			—
Inventory		11,298			8,784
Lease liability		7,975			6,216
Stock-based compensation		5,786			4,318
Accruals and reserves		4,292			7,145
Legal settlement		2,302			1,998
Income tax credit carryforwards		1,566			1,574
Total deferred tax assets		204,724			172,864
Valuation allowance		(162,314	)		(127,209	)
Total deferred tax assets, net of valuation allowance		42,410			45,655
Deferred tax liabilities:
Property and equipment		(19,610	)		(18,404	)
Goodwill and intangibles		(15,518	)		(18,439	)
Right-of-use assets		(7,250	)		(6,256	)
Total deferred tax liabilities		(42,378	)		(43,099	)
Net deferred tax assets	$	32		$	2,556

The realization of deferred tax assets is dependent on the Company’s ability to generate sufficient taxable income in future years in the associated jurisdiction to which the deferred tax assets relate. As of December 31, 2022, a valuation allowance of $162.3 million has been established against the deferred tax assets, as the Company has determined that it is currently not likely that these assets will be realized. During the years ended December 31, 2022, 2021 and 2020, the valuation allowance increased by $35.1 million, $39.7 million and $14.4 million, respectively.

In determining the need for a valuation allowance, the Company considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies, and recent financial performance. Based on the review of all positive and negative evidence, including a three-year cumulative pretax loss, the Company determined that a full valuation allowance should be recorded against its deferred tax assets, with the exception of the Company’s Texas Temporary Credit for Business Loss Carryforwards.

The following table summarizes the changes to unrecognized tax benefits (in thousands):

	Year ended December 31,
	2022			2021		2020
Unrecognized tax benefit at the beginning of the year	$	15,165		$	2,452	$	2,452
Increases in tax positions for current year relating to    acquisitions		—			12,713		—
Decreases in tax positions for prior years		(8,929	)		—		—
Increases in tax positions for current year relating to ongoing operations		173			—		—
Decreases in tax positions as a result of a lapse of statute of limitations		(330	)		—		—
Unrecognized tax benefits at the end of the year	$	6,079		$	15,165	$	2,452

At December 31, 2022, 2021 and 2020, $5.6 million, $14.5 million and $2.0 million, respectively, of the Company’s total unrecognized tax benefits, if recognized, would impact the effective income tax rate.

In accordance with the disclosure requirements as described in ASC Topic 740, Income Taxes, the Company classifies uncertain tax positions as non-current income tax liabilities unless they are expected to be paid within one

year. The Company recognizes interest and penalties related to income tax matters as a component of the income tax provision. As of December 31, 2022 and 2021, there were $0.04 million and $0.2 million in accrued interest and penalties, respectively. There were no accrued interest and penalties as of December 31, 2020.

The Company and its subsidiaries are subject to federal income tax as well as income tax of multiple state and foreign jurisdictions. With few exceptions, the Company is no longer subject to income tax examination by tax authorities in major jurisdictions for years prior to 2017. However, to the extent allowed by law, the taxing authorities may have the right to examine prior periods where net operating losses and tax credits were generated and carried forward and make adjustments up to the amount of the carryforwards. The Company is not currently under examination by the Internal Revenue Service, foreign or state and local tax authorities.

At December 31, 2022, the Company had federal, state, and foreign net operating loss carryforwards of $487.9 million, $375.5 million and $112.9 million, respectively. Federal and state net operating losses generated after December 31, 2017 of $358.7 million and $74.9 million, respectively, can be carried forward indefinitely. The remaining federal and state net operating losses begin expiring at various dates beginning in 2022 through 2042, while foreign net operating losses in France carryforward indefinitely. At December 31, 2022, the Company had state research and development tax credit carryforwards of $3.2 million. The state research and development tax credits do not have an expiration date and may be carried forward indefinitely. Utilization of the net operating loss and tax credit carryforwards may become subject to annual limitations due to ownership change limitations that could occur in the future as provided by Section 382 and 383 of the Internal Revenue Code of 1986, as amended (the “Internal Revenue Code”), as well as similar state provisions. These ownership changes may limit the amount of the net operating loss and tax credit carryforwards that can be utilized annually to offset future taxable income if the Company experiences a cumulative change in ownership of more than 50% within a three-year testing period. The Company completed formal study through the year ended December 31, 2018 and determined ownership changes within the meaning of IRC Section 382 had occurred. The Company adjusted federal tax attribute carry forwards and deferred tax assets accordingly. The Company will make adjustments to the fully reserved attributes as further studies are completed.

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Related Party Transactions

12 Months Ended

Dec. 31, 2022

Related Party Transactions [Abstract]

Related Party Transactions

12. Related Party Transactions

In November 2018, the Company entered into the Term Loan and Inventory Financing Agreement with certain affiliates of Squadron Capital, LLC (“Squadron”), including an inventory supplier (the "Squadron Supplier Affiliate”). The Term Loan and the Inventory Financing Agreement were terminated and all obligations thereunder were repaid on August 10, 2021. See Note 6 for further details regarding the Term Loan and Inventory Financing Agreement. For the years ended December 31, 2022, 2021 and 2020, the Company purchased inventory in the amounts of $10.3 million, $7.7 million and $4.0 million, respectively, from the Squadron Supplier Affiliate. As of December 31, 2022 and 2021, the Company had $2.4 million and $0.8 million, respectively, due to the Squadron Supplier Affiliate. Squadron was a lead investor in the Private Placement that was closed on March 1, 2021. David Pelizzon, President and Director of Squadron, currently serves on the Company’s Board of Directors.

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Business Segment and Geographic Information

12 Months Ended

Dec. 31, 2022

Segment Reporting [Abstract]

Business Segment and Geographic Information

13. Business Segment and Geographic Information

The Company operates in one segment based upon the Company’s organizational structure, the way in which the operations and investments are managed and evaluated by the chief operating decision maker (“CODM”) as well as the lack of available discrete financial information at a level lower than the consolidated level. The Company shares common, centralized support functions which report directly to the CODM and decision-making regarding the Company’s overall operating performance and allocation of Company resources is assessed on a consolidated basis.

Net revenue and property and equipment, net, by geographic region are as follows (in thousands):

	Revenue						Property and equipment, net
	Year Ended December 31,						December 31,
(in thousands)	2022		2021		2020		2022		2021
United States	$	326,697	$	223,911	$	141,079	$	99,050	$	85,320
International		24,170		19,301		3,782		2,902		2,081
Total	$	350,867	$	243,212	$	144,861	$	101,952	$	87,401

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Subsequent Events

12 Months Ended

Dec. 31, 2022

Subsequent Events [Abstract]

Subsequent Events

14. Subsequent Events

On January 6, 2023, the Company entered into a $150.0 million term loan agreement with Braidwell Transaction Holdings, LLC. The agreement provides for an initial term loan facility of $100.0 million which was funded on the closing date. The Company has the option to draw an additional $50.0 million within 18 months of the closing date. The term loan matures in January 2028. Borrowings under the term loan bear interest at an annual rate of Term SOFR plus 5.75%. The outstanding portion of the term loan is secured by substantially all of the Company’s assets with the priority interest of the lenders in the Braidwell Term Loan and the Revolving Facility subject to terms of a customary intercreditor agreement.


 

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Organization and Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2022

Accounting Policies [Abstract]

The Company

The Company

Alphatec Holdings, Inc. (the “Company”), through its wholly owned subsidiaries, Alphatec Spine, Inc. (“Alphatec Spine”), SafeOp Surgical, Inc. (“SafeOp”), and EOS imaging S.A. (“EOS”), is a medical technology company focused on the design, development, and advancement of technology for the better surgical treatment of spinal disorders. The Company markets its products in the United States of America and internationally via a network of independent sales agents and direct sales representatives.

Basis of Presentation and Principles of Consolidation

Basis of Presentation and Principles of Consolidation

The consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP") and include the accounts of the Company and its wholly owned subsidiaries. The Company translates the financial statements of its foreign subsidiaries using end-of-period exchange rates for assets and liabilities and average exchange rates during each reporting period for results of operations. All intercompany balances and transactions have been eliminated in consolidation. The Company operates in one reportable business segment.

Reclassification

Reclassification

Certain amounts in the consolidated financial statements for the years ended December 31, 2021 and 2020 have been reclassified to conform to the current year’s presentation. These reclassifications were immaterial and have no impact on previously reported results of operations or accumulated deficit.

Use of Estimates

Use of Estimates

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities, and the reported amounts of revenues and expenses. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include the useful lives of property and equipment, goodwill, intangible assets, allowances for doubtful accounts, deferred tax assets, inventory, stock-based compensation, revenues, income tax uncertainties, and other contingencies.

Concentrations of Credit Risk and Significant Customers

Concentrations of Credit Risk and Significant Customers

Financial instruments, which potentially subject the Company to concentrations of credit risk, consist primarily of cash, cash equivalents, and accounts receivable. The Company limits its exposure to credit loss by depositing its cash and investments with established financial institutions. As of December 31, 2022, a substantial portion of the Company’s available cash funds is held in business accounts. Although the Company deposits its cash with multiple financial institutions, its deposits, at times, may exceed federally insured limits.

The Company’s customers are primarily hospitals and surgical centers. No one single customer represented greater than 10 percent of consolidated revenues and accounts receivable for the years presented. Credit to customers is granted based on an analysis of the customers’ credit worthiness. Credit losses have not been significant.

Cash and Cash Equivalents

Cash and Cash Equivalents

The company considers all highly liquid investments that are readily convertible into cash and have an original maturity of three months or less at the time of purchase to be cash equivalents.

Accounts Receivable, net

Accounts Receivable, net

Accounts receivable are presented net of allowance for doubtful accounts. The Company makes judgments as to its ability to collect outstanding receivables and provides allowances for a portion of receivables when collection becomes doubtful. Provisions are made based upon a specific review of all significant outstanding invoices. In determining the provision for invoices not specifically reviewed, the Company analyzes historical collection experience. If the historical data used to calculate the allowance provided for doubtful accounts does not reflect the Company’s future ability to collect outstanding receivables or if the financial condition of customers were to deteriorate, resulting in impairment of their ability to make payments, an increase in the provision for doubtful accounts may be required.

The Company’s accounts receivable generally have net 30-day payment terms. The Company generally does not allow returns of products that have been delivered. The Company offers standard quality assurance warranty on its products. The Company had no material bad debt expense and there were no material contract assets during the years presented.

Excess and Obsolete Inventory

Excess and Obsolete Inventory

Most of the Company’s inventory is comprised of finished goods, which is primarily produced by third-party suppliers. Specialized implants, fixation products, biologics, and disposables are determined by utilizing a standard cost method that includes capitalized variances which approximates the weighted average cost. Imaging equipment and related parts are valued at weighted average cost. Inventories are stated at the lower of cost or net realizable value. The Company reviews the components of its inventory on a periodic basis for excess and obsolescence and adjusts inventory to its net realizable value as necessary.

The Company records a lower of cost or net realizable value (“LCNRV”) inventory reserve for estimated excess and obsolete inventory based upon its expected use of inventory on hand. The Company’s inventory, which consists primarily of specialized implants, fixation products, biologics, and disposables is at risk of obsolescence due to the need to maintain substantial levels of inventory. In order to market its products effectively and meet the demands of interoperative product placement, the Company maintains and provides surgeons and hospitals with a variety of inventory products and sizes. For each surgery, fewer than all components will be consumed. The need to maintain and provide a wide variety of inventory causes inventory to be held that is not likely to be used.

The Company’s estimates and assumptions for excess and obsolete inventory are reviewed and updated on a quarterly basis. The estimates and assumptions are determined primarily based on current usage of inventory and the age of inventory quantities on hand. Additionally, the Company considers recent sales experience to develop assumptions about future demand for its products, while considering product life cycles and new product launches. Increases in the LCNRV reserve for excess and obsolete inventory result in a corresponding charge to cost of sales. For the years ended December 31, 2022, 2021 and 2020, the Company recorded LCNRV charges for excess and obsolete inventory of $9.8 million, $11.1 million and $7.0 million, respectively, net of inventory sold of $1.5 million, $2.5 million and $1.0 million, respectively. For the years ended December 31, 2022, 2021 and 2020, the Company recorded a reduction of reserve for inventory that was disposed of $8.2 million, $2.1 million and $1.3 million, respectively.

Property and Equipment, net

Property and Equipment, net

Property and equipment are stated at cost, net of accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets, generally ranging from three to seven years. Leasehold improvements and assets acquired under financing leases are amortized over the shorter of their useful lives or the remaining terms of the related leases.

Operating Lease

Operating Lease

The Company determines whether a contract is a lease or contains a lease at inception by assessing whether there is an identified asset and whether the contract conveys the right to control the use of the identified asset in exchange for consideration over a period of time. If both criteria are met, the Company determines the initial classification and measurement of its right-of-use (“ROU”) asset and lease liability at the lease commencement date and thereafter, if modified. The Company recognizes a ROU asset and lease liability for its operating leases with lease terms greater than 12 months. The lease term includes any renewal options and termination options that the Company is reasonably assured to exercise. ROU assets and lease liabilities are based on the present value of lease payments over the lease term. The present value of operating lease payments is determined by using the incremental borrowing rate of interest that the Company would borrow on a collateralized basis for an amount equal to the lease payments in a similar economic environment.

Rent expense for operating leases is recognized on a straight-line basis over the reasonably assured lease term based on the total lease payments and is included in cost of sales, research and development, and sales, general and administrative expenses in the consolidated statements of operations.

The Company aggregates all lease and non-lease components for each class of underlying assets into a single lease component and variable charges for common area maintenance and other variable costs are recognized as expense as incurred. Total variable costs associated with leases were immaterial for all years presented. The Company had an immaterial amount of financing leases as of December 31, 2022 and 2021, which is included in property and equipment, net, accrued expenses and other current liabilities, and other long-term liabilities on the consolidated balance sheets.

Valuation of Goodwill

Valuation of Goodwill

Goodwill represents the excess of the cost over the fair value of net assets acquired from the Company’s business combinations. The determination of the value of goodwill and intangible assets arising from business combinations and asset acquisitions requires extensive use of accounting estimates and judgments to allocate the purchase price to the fair value of the net tangible and intangible assets acquired. Goodwill is assessed for impairment using fair value measurement techniques on an annual basis or more frequently if facts and circumstance warrant such a review. Goodwill is considered to be impaired if the Company determines that the carrying value of the reporting unit exceeds its respective fair value.

The Company’s annual evaluation for impairment of goodwill consists of one reporting unit. The Company completed its most recent annual evaluation for impairment of goodwill as of October 1, 2022 and determined that no impairment existed. In addition, no indicators of impairment were noted through December 31, 2022, and consequently no impairment charge was recorded during the years ended December 31, 2022, 2021 and 2020.

Valuation of Intangible Assets

Valuation of Intangible Assets

Intangible assets are comprised primarily of purchased technology, customer relationships, trade name, trademarks, and in-process research and development. The Company makes significant judgments in relation to the valuation of intangible assets resulting from business combinations and asset acquisitions. Intangible assets are generally amortized on a straight-line basis over their estimated useful lives of 2 to 12 years. The Company bases the useful lives and related amortization expense on the period of time it estimates the assets will generate net sales or otherwise be used. The Company also periodically reviews the lives assigned to its intangible assets to ensure that its initial estimates do not exceed any revised estimated periods from which the Company expects to realize cash flows. If a change were to occur in any of the above-mentioned factors or estimates, the likelihood of a material change in the Company’s reported results would increase. The Company evaluates its intangible assets with finite lives for indications of impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. Factors that could trigger an impairment review include significant under-performance relative to expected historical or projected future operating results, significant changes in the manner of the Company’s use of the acquired assets or the strategy for its overall business or significant negative industry or economic trends. If this evaluation indicates that the value of the intangible asset may be impaired, the Company makes an assessment of the recoverability of the net carrying value of the asset over its remaining useful life. If this assessment indicates that the intangible asset is not recoverable, based on the estimated undiscounted future cash flows of the asset over the remaining amortization period, the Company reduces the net carrying value of the related intangible asset to fair value and may adjust the remaining amortization period. Significant judgment is required in the forecasts of future operating results that are used in the discounted cash flow valuation models. It is possible that plans may change and estimates used may prove to be inaccurate. If actual results, or the plans and estimates used in future impairment analyses, are lower than the original estimates used to assess the recoverability of these assets, the Company could incur additional impairment charges. There were no impairment charges during the years ended December 31, 2022, 2021 or 2020.

In-process research and development ("IPR&D") and software in development have indefinite lives and are not amortized until the related products reach full commercial launch or when the projects are complete and their assets are ready for their intended use. Indefinite-lived intangible assets are considered to be impaired if the products do not reach commercial launch, if the project is not completed or not completed in a timely manner, or if the related products or projects are no longer technologically feasible. Impairment related to IPR&D and software in development is calculated as the excess of the asset's carrying value over its fair value. There were no impairment charges during the years ended December 31, 2022, 2021 or 2020.

Impairment of Long-Lived Assets

Impairment of Long-Lived Assets

The Company assesses potential impairment to its long-lived assets when there is evidence that events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. An impairment loss is recognized when estimated future undiscounted cash flows related to the asset are less than its carrying amount. Any required impairment loss is measured as the amount by which the carrying amount of a long-lived asset exceeds its fair value and is recorded as a reduction in the carrying value of the related asset and a charge to operating results. There were no material impairment charges during the years ended December 31, 2022, 2021 or 2020.

Warrants to Purchase Common Stock

Warrants to Purchase Common Stock

Warrants are accounted for in accordance with the applicable accounting guidance as either derivative liabilities or as equity instruments depending on the specific terms of the agreements.

All warrants issued during the years ended December 31, 2022 and 2021 qualified for classification within stockholders’ equity.

Fair Value Measurements

Fair Value Measurements

The carrying amount of financial instruments consisting of cash and cash equivalents, accounts receivable, prepaid expenses and other current assets, accounts payable, accrued expenses, and short-term debt included in the Company’s consolidated financial statements are reasonable estimates of fair value due to their short maturities.

Authoritative guidance establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

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

Level 2: Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active; or other inputs that can be corroborated by observable market data for substantially the full term of the assets or liabilities.

Level 3: Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

Revenue Recognition

Revenue Recognition

The Company recognizes revenue from product sales in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Revenue from Contracts with Customers (“Topic 606”). This standard applies to all contracts with customers, except for contracts that are within the scope of other standards, such as leases, insurance, collaboration arrangements, and financial instruments. Under Topic 606, an entity recognizes revenue when its customer obtains control of promised goods or services, in an amount that reflects the consideration that the entity expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that an entity determines are within the scope of Topic 606, the entity performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation. The Company only applies the five-step model to contracts when it is probable that the entity will collect the consideration it is entitled to in exchange for the goods or services it transfers to the customer.

Sales are derived primarily from the sale of spinal implant products, imaging equipment, and related services to hospitals and medical centers through direct sales representatives and independent sales agents. Revenue is recognized when obligations under the terms of a contract with customers are satisfied, which occurs with the transfer of control of products to customers, either upon shipment of the product or delivery of the product to the customer depending on the shipping terms, or when the products are used in a surgical procedure (implanted in a patient). Revenue from the sale of imaging equipment is recognized as each distinct performance obligation is fulfilled and control transfers to the customer, beginning with shipment or delivery, depending on the terms. Revenue from other distinct performance obligations, such as maintenance on imaging equipment and other imaging related services, is recognized in the period the service is performed, and makes up less than 10% of the Company’s total revenue. Revenue is measured based on the amount of consideration expected to be received in exchange for the transfer of the goods or services specified in the contract with each customer. In certain cases, the Company does offer the ability for customers to lease its imaging equipment primarily on a non-sales type basis, but such arrangements are immaterial to total revenue in the periods presented. The Company generally does not allow returns of products that have been delivered. Costs incurred by the Company associated with sales contracts with customers are deferred over the performance obligation period and recognized in the same period as the related revenue, except for contracts that complete within one year or less, in which case the associated costs are expensed as incurred. Payment terms for sales to customers may vary but are commensurate with the general business practices in the country of sale.

To the extent that the transaction price includes variable consideration, such as discounts, rebates, and customer payment penalties, the Company estimates the amount of variable consideration that should be included in the transaction price utilizing either the expected value method or the most likely amount method depending on the nature of the variable consideration. Variable consideration is included in the transaction price if, in the Company’s judgment, it is probable that a significant future reversal of cumulative revenue under the contract will not occur. Estimates of variable consideration and determination of whether to include estimated amounts in the transaction price are based largely on an assessment of the Company’s anticipated performance and all information that is reasonably available, including historical, current, and forecasted information.

The Company records a contract liability, or deferred revenue, when it has an obligation to provide a product or service to the customer and payment is received in advance of its performance. When the Company sells a product or service with a future performance obligation, revenue is deferred on the unfulfilled performance obligation and recognized over the related performance period. Generally, the Company does not have observable evidence of the standalone selling price related to its future service obligations; therefore, the Company estimates the selling price using an expected cost plus a margin approach. The transaction price is allocated using the relative standalone selling price method. The use of alternative estimates could result in a different amount of revenue deferral.

Research and Development Expenses

Research and Development Expenses

Research and development costs are expensed as incurred. Research and development expenses consist of costs associated with the design, development, testing, and enhancement of the Company's products. Research and development expenses also include salaries and related employee benefits, research-related overhead expenses, fees paid to external service providers and development consultants in the form of both cash and equity.

Transaction-related Expenses

Transaction-related Expenses

Transaction-related costs are expensed as incurred. Transaction-related expenses consist of certain costs incurred related primarily to the acquisition and integration of EOS.

Product Shipment Cost

Product Shipment Cost

Product shipment costs for surgical sets are included in sales, general and administrative expenses in the accompanying consolidated statements of operations. Product shipment costs totaled $14.8 million, $8.3 million and $5.3 million for the years ended December 31, 2022, 2021 and 2020 respectively.

Stock-Based Compensation

Stock-Based Compensation

Stock-based compensation expense for equity-classified awards, principally related to restricted stock units ("RSUs") and performance restricted stock units ("PRSUs") is measured at the grant date based on the estimated fair value of the award. The fair value of equity instruments that are expected to vest is recognized and amortized over the requisite service period. The Company has granted awards with up to four year graded or cliff vesting terms. No exercise price or other monetary payment is required for receipt of the shares issued in settlement of the respective award; instead, consideration is furnished in the form of the participant’s service.

The fair value of RSUs including PRSUs with pre-defined performance criteria is based on the stock price on the date of grant whereas the expense for PRSUs with pre-defined performance criteria is adjusted with the probability of achievement of such performance criteria at each period end. The fair value of the PRSUs that are earned based on the achievement of pre-defined market conditions, is estimated on the date of grant using a Monte Carlo valuation model. The key assumptions in applying this model are an expected volatility, risk-free interest rate and the probability of the performance criteria being met.

Stock-based compensation recorded in the Company’s consolidated statements of operations is based on awards expected to ultimately vest and has been reduced for estimated forfeitures. The Company’s estimated forfeiture rates may differ from its actual forfeitures. The Company considers its historical experience of pre-vesting forfeitures on awards by each homogenous group of employees as the basis to arrive at its estimated annual pre-vesting forfeiture rates.

The Company estimates the fair value of stock options issued under the Company’s equity incentive plans and shares issued to employees under the Company’s employee stock purchase plan (“ESPP”) using a Black-Scholes option-pricing model on the date of grant. The Black-Scholes option-pricing model incorporates various assumptions including expected volatility, expected term and risk-free interest rates. The expected volatility is based on the historical volatility of the Company’s common stock over the most recent period commensurate with the estimated expected term of the Company’s stock options and ESPP offering period which is derived from historical experience. The risk-free interest rate for periods within the contractual life of the option is based on the United States ("U.S.") Treasury yield in effect at the time of grant. The Company has never declared or paid dividends and has no plans to do so in the foreseeable future.

The Company accounts for stock option grants to non-employees in accordance with provisions which require that the fair value of these instruments be recognized as an expense over the period in which the related services are rendered.

Income Taxes

Income Taxes

The Company accounts for income taxes in accordance with provisions which set forth an asset and liability approach that requires the recognition of deferred tax assets and deferred tax liabilities for the expected future tax consequences of temporary differences between the carrying amounts and the tax bases of assets and liabilities. Valuation allowances are established when necessary to reduce deferred tax assets to the amount expected to be realized. In making such determination, a review of all available positive and negative evidence must be considered, including scheduled reversal of deferred tax liabilities, projected future taxable income, tax planning strategies, and recent financial performance.

The Company recognizes interest and penalties related to uncertain tax positions as a component of the income tax provision.

Net Loss per Share

Net Loss per Share

Basic net loss per share is calculated by dividing the net loss available to common stockholders by the weighted-average number of common shares outstanding for the period. If applicable, diluted net loss per share attributable to common stockholders is calculated by dividing net loss available to common stockholders by the diluted weighted-average number of common shares outstanding for the period determined using the treasury-stock method and the if-converted method for convertible debt. For purposes of this calculation, common stock subject to repurchase by the Company, common stock issuable upon conversion or exercise of convertible notes, preferred shares, options, and warrants are considered to be common stock equivalents and are only included in the calculation of diluted earnings per share when their effect is dilutive. Due to the Company’s net loss position, the effect of including common stock equivalents in the earnings per share calculation is anti-dilutive, and therefore not included.

The following table sets forth the computation of basic and diluted loss per share (in thousands, except per share data):

	Year Ended December 31,
	2022			2021			2020
Numerator:
Net loss	$	(152,149	)	$	(144,326	)	$	(78,994	)
Denominator:
Weighted average common shares outstanding		103,373			96,197			67,020
Net loss per share, basic and diluted	$	(1.47	)	$	(1.50	)	$	(1.18	)

The following potentially dilutive shares of common stock were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive for the years presented (in thousands):

	Year Ended December 31,
	2022		2021		2020
Series A convertible preferred stock		—		29		29
Options to purchase common stock and employee stock purchase plan		2,991		3,416		3,951
Unvested restricted stock units		8,533		8,703		8,216
Warrants to purchase common stock		15,491		20,184		24,881
Senior convertible notes		17,246		17,246		—
		44,261		49,578		37,077

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Recently Issued Accounting Pronouncements

In August 2021, the FASB issued ASU No. 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers. The guidance requires application of ASC 606, “Revenue from Contracts with Customers” to recognize and measure contract assets and contract liabilities acquired in a business combination. ASU No. 2021-08 adds an exception to the general recognition and measurement principle in ASC 805 where assets acquired and liabilities assumed in a business combination, including contract assets and contract liabilities arising from contracts with customers, are measured at fair value on the acquisition date. Under the new guidance, the acquirer will recognize acquired contract assets and contract liabilities as if the acquirer had originated the contract. The standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2022, with early adoption permitted. The Company does not intend to early adopt the standard and is in the process of assessing the impact, if any, on its consolidated financial statements and related disclosures.

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Organization and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Accounting Policies [Abstract]

Computation of Basic and Diluted Loss Per Share

The following table sets forth the computation of basic and diluted loss per share (in thousands, except per share data):

	Year Ended December 31,
	2022			2021			2020
Numerator:
Net loss	$	(152,149	)	$	(144,326	)	$	(78,994	)
Denominator:
Weighted average common shares outstanding		103,373			96,197			67,020
Net loss per share, basic and diluted	$	(1.47	)	$	(1.50	)	$	(1.18	)

Anti-Dilutive Securities of Common Stock Excluded from Calculation of Diluted Net Loss Per Share

The following potentially dilutive shares of common stock were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive for the years presented (in thousands):

	Year Ended December 31,
	2022		2021		2020
Series A convertible preferred stock		—		29		29
Options to purchase common stock and employee stock purchase plan		2,991		3,416		3,951
Unvested restricted stock units		8,533		8,703		8,216
Warrants to purchase common stock		15,491		20,184		24,881
Senior convertible notes		17,246		17,246		—
		44,261		49,578		37,077

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Business Combination (Tables)

12 Months Ended

Dec. 31, 2022

Business Combinations [Abstract]

Schedule of Estimate of Fair Value of Purchase Consideration of Assets Acquired and Liabilities Assumed

The Company has completed its estimate of the fair value of the purchase consideration, the assets acquired, and the liabilities assumed. Accordingly, the Company has allocated the purchase consideration as follows:

(in thousands)	As of May 13, 2021
Cash paid for purchase of EOS Shares at Change in Control Date	$	46,908
Cash paid for purchase of OCEANEs at Change in Control Date		19,620
Total cash paid at Change in Control Date		66,528
Fair value of investment in EOS Shares held prior to Change in    Control Date		23,549
Fair value of investment in OCEANEs held prior to Change in    Control Date		1,477
Total fair value of investment in EOS held prior to Change in    Control Date		25,026
Fair value of noncontrolling interest acquired after Change in    Control Date		8,454
	$	100,008
Cash and cash equivalents	$	16,778
Accounts receivable		9,083
Inventory		26,681
Other current assets		4,422
Property, plant and equipment, net		1,650
Deferred tax assets		536
Right-of-use assets		4,341
Goodwill		29,469
Definite-lived intangible assets:
Developed technology		56,000
Customer relationships		9,500
Trade names		6,000
Other noncurrent assets		395
Contract liabilities		21,196
Long-term debt		15,297
Other liabilities assumed		28,354
Total identifiable net assets	$	100,008

Schedule of Unaudited Pro Forma Results

The unaudited pro forma results include IFRS to U.S. GAAP adjustments for EOS historical results and adjustments for accounting policy alignment, which were materially similar to the Company. Any differences in accounting policies were adjusted to reflect the accounting policies of the Company in the unaudited pro forma results presented.

	Year Ended December 31,
(in thousands, except per share amounts)	2022			2021
Total revenue	$	350,867		$	251,906
Net loss		(152,149	)		(140,441	)
Net loss per share, basic and diluted	$	(1.47	)	$	(1.46	)

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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2022

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

Assets and liabilities measured at fair value on a recurring basis include the following as of December 31, 2022, and December 31, 2021 (in thousands):

	December 31, 2022
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	62,956		—		—	$	62,956
Total cash equivalents	$	62,956		—		—	$	62,956
	December 31, 2021
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	140,010		—		—	$	140,010
Total cash equivalents	$	140,010		—		—	$	140,010
Liability classified equity award	$	—		—		2,052	$	2,052

Reconciliation of Liabilities Measured at Fair Value Using Significant Unobservable Inputs

The following table provides a reconciliation of liabilities measured at fair value using significant unobservable inputs (Level 3) as of December 31, 2022 (in thousands):

	Level 3 Liabilities
Balance at December 31, 2020	$	1,668
Straight-line recognition of liability classified equity award		1,028
Change in fair value measurement		(644	)
Balance at December 31, 2021	$	2,052
Straight-line recognition of liability classified equity award		483
Change in fair value measurement		(586	)
Reclassification to equity classified award		(1,949	)
Balance at December 31, 2022	$	—

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Balance Sheet Details (Tables)

12 Months Ended

Dec. 31, 2022

Balance Sheet Related Disclosures [Abstract]

Inventories

Inventories consist of the following (in thousands):

	December 31,
	2022		2021
Raw materials	$	13,928	$	14,671
Work-in-process		3,032		5,712
Finished goods		84,561		71,320
Inventories	$	101,521	$	91,703

Property and Equipment, Net

Property and equipment, net consist of the following (in thousands, except as indicated):

	Useful Life	December 31,
	(in years)	2022			2021
Surgical instruments	4	$	158,906		$	130,432
Machinery and equipment	7		9,502			11,092
Computer equipment	3		4,753			5,694
Office furniture and equipment	5		4,760			3,861
Leasehold improvements	various		2,965			1,754
Construction in progress	n/a		15,360			7,292
			196,246			160,125
Less: accumulated depreciation			(94,294	)		(72,724	)
Property and equipment, net		$	101,952		$	87,401

Schedule of Goodwill

The change in the carrying amount of goodwill during the year ended December 31, 2022 included the following (in thousands):

December 31, 2021	$	39,689
Purchase price allocation adjustment		1,628
Foreign currency fluctuation		(1,542	)
December 31, 2022	$	39,775

Intangible Assets, Net

Intangible assets, net consist of the following (in thousands, except as indicated):

	Remaining Weighted Avg. Useful Life	Gross		Accumulated			Intangible
December 31, 2022:	(in years)	Amount		Amortization			Assets, net
Developed product technology	7	$	75,896	$	(13,420	)	$	62,476
Trademarks and trade names	8		5,421		(987	)		4,434
Customer relationships	4		14,240		(6,906	)		7,334
Distribution network	2		2,413		(2,041	)		372
Total amortized intangible assets			97,970		(23,354	)		74,616
Software in development	n/a		2,503					2,503
In-process research and development	n/a		5,662					5,662
Total intangible assets		$	106,135	$	(23,354	)	$	82,781
		.
	Remaining Weighted Avg. Useful Life	Gross		Accumulated			Intangible
December 31, 2021:	(in years)	Amount		Amortization			Assets, net
Developed product technology	12	$	74,543	$	(5,768	)	$	68,775
Trademarks and trade names	10		5,732		(477	)		5,255
Customer relationships	5		14,732		(5,264	)		9,468
Distribution network	3		2,413		(1,840	)		573
Total amortized intangible assets			97,420		(13,349	)		84,071
In-process research and development	n/a		1,203					1,203
Total intangible assets		$	98,623	$	(13,349	)	$	85,274

Schedule of Intangible Assets, Future Expected Amortization Expense

Future amortization expense related to intangible assets as of December 31, 2022 is as follows (in thousands):

Year Ending December 31,
2023	$	12,402
2024		12,300
2025		10,811
2026		10,811
2027		8,939
Thereafter		19,353
Total	$	74,616

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consist of the following (in thousands):

	December 31,
	2022		2021
Payroll and payroll related	$	19,764	$	18,449
Commissions and sales milestones		17,444		12,420
Accrued legal expenses		8,345		4,290
Royalties		4,758		3,466
Orthotec litigation settlement obligation		3,968		4,400
Inventory in -transit		3,548		2,089
Debt issuance costs		2,690		—
Administration fees		1,912		1,698
Other taxes payable		1,955		3,004
Professional fees		1,238		394
Interest		1,122		1,045
Other		5,638		4,294
Total accrued expenses and other current liabilities	$	72,382	$	55,549

Schedule of Other Long-Term Liabilities

Other long-term liabilities consist of the following (in thousands):

	December 31,
	2022		2021
Royalties	$	5,739	$	5,833
Orthotec litigation settlement obligation		—		3,587
Income tax-related liabilities		980		1,522
Contract liabilities		3,047		2,897
Other		1,777		3,222
Other long-term liabilities	$	11,543	$	17,061

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Contract Liabilities (Tables)

12 Months Ended

Dec. 31, 2022

Contract with Customer, Liability [Abstract]

Opening and Closing Balances of Company's Contract Liabilities

The opening and closing balances of the Company’s contract liabilities are as follows (in thousands):

Balance at December 31, 2021	$	18,151
Payments received		19,494
Revenue recognized		(21,581	)
Foreign currency fluctuation		(1,061	)
Balance at December 31 2022	$	15,003

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Debt (Tables)

12 Months Ended

Dec. 31, 2022

Debt Disclosure [Abstract]

Outstanding Principal Amount and Carrying Value of Notes

The outstanding principal amount and carrying value of the 2026 Notes consist of the following (in thousands):

	December 31, 2022
Principal	$	316,250
Unamortized debt issuance costs		(7,290	)
Net carrying value	$	308,960

Debt

Debt consists of the following (in thousands):

	December 31,
	2022			2021
2026 Notes	$	316,250		$	316,250
OCEANEs		13,333			14,113
Other notes payable		1,869			386
EOS PGE Loans		5,046			5,341
Revolving Credit Facility		35,251			—
Total		371,749			336,090
Less: debt discount		(7,290	)		(9,259	)
Total		364,459			326,831
Less: current portion of long-term debt		(14,948	)		(342	)
Total long-term debt, net of current portion	$	349,511		$	326,489

Principal Payments on Debt

Principal payments on debt are as follows as of December 31, 2022 (in thousands):

2023	$	14,957
2024		1,731
2025		1,693
2026		317,513
2027		35,855
Total		371,749
Less: debt discount		(7,290	)
Total		364,459
Less: current portion of long-term debt		(14,948	)
Long-term debt, net of current portion	$	349,511

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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2022

Commitments and Contingencies Disclosure [Abstract]

Future minimum annual lease payments

Future minimum annual lease payments for all operating leases of the Company are as follows as of December 31, 2022 (in thousands):

2023	$	4,937
2024		5,033
2025		5,019
2026		5,080
2027		5,121
Thereafter		13,057
Total undiscounted lease payments		38,247
Less: imputed interest		(6,843	)
Operating lease liability		31,404
Less: current portion of operating lease liability		(4,842	)
Operating lease liability, less current portion	$	26,562

Summary of Weighted-Average Remaining Lease Term and Discount Rate

The Company’s weighted average remaining lease term and weighted average discount rate as of December 31, 2022 and December 31, 2021 are as follows:

	December 31,
	2022			2021
Weighted average remaining lease term (years)		7.7			8.6
Weighted average discount rate		5.5	%		8.5	%

Summary of Operating Leases

Information related to the Company’s operating leases is as follows (in thousands):

	Year Ended December 31,
	2022		2021		2020
Rent expense	$	4,643	$	4,482	$	1,300
Cash paid for amounts included in measurement of lease liabilities	$	4,409	$	1,795	$	1,400

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Orthotec Settlement (Tables)

12 Months Ended

Dec. 31, 2022

Commitments and Contingencies Disclosure [Abstract]

Schedule of Reconciliation of Net Settlement Obligation

A reconciliation of the total net settlement obligation is as follows (in thousands):

	December 31,
	2022		2021
Litigation settlement obligation - short-term portion	$	3,968	$	4,400
Litigation settlement obligation - long-term portion		—		3,587
Total		3,968		7,987
Future imputed interest		96		478
Total litigation settlement obligation	$	4,064	$	8,465

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Equity (Tables)

12 Months Ended

Dec. 31, 2022

Equity [Abstract]

Summary of Outstanding Warrants

A summary of all outstanding warrants as of December 31, 2022 is as follows (in thousands):

	Number of Warrants		Strike Price		Expiration
2018 PIPE Warrants		6,311	$	3.50	May 2023
SafeOp Surgical Merger Warrants		938	$	3.50	May 2023
2018 Squadron Medical Warrants		845	$	3.15	May 2027
2019 Squadron Medical Warrants		4,839	$	2.17	May 2027
2020 Squadron Medical Warrants		1,076	$	4.88	May 2027
Executive Warrants		1,327	$	5.00	December 2024
Other*		155	$	6.97	Various through February 2026
Total		15,491
*Represents weighted average strike price

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Stock Benefit Plans and Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2022

Share-Based Payment Arrangement [Abstract]

Summary of Compensation Cost for Stock-Based Compensation Arrangements

The compensation cost that has been included in the Company’s consolidated statements of operations for all stock-based compensation arrangements is detailed as follows (in thousands):

	Year Ended December 31,
	2022		2021		2020
Cost of sales	$	2,597	$	737	$	512
Research and development		5,016		4,056		2,114
Sales, general and administrative		32,943		31,657		15,033
Total	$	40,556	$	36,450	$	17,659

Summary of Stock Option Activity

A summary of the Company’s stock option activity under the Plans and related information is as follows (in thousands, except as indicated and per share data):

	Shares			Weighted average exercise price		Weighted average remaining contractual term (in years)		Aggregate intrinsic value
Outstanding at December 31, 2021		3,351		$	3.50
Exercised		(378	)		2.84
Forfeited		(57	)		13.83
Outstanding at December 31, 2022		2,916		$	3.38		4.58	$	26,783
Options vested and expected to vest at    December 31, 2022		2,916		$	3.38		4.58	$	26,783
Options exercisable at    December 31, 2022		2,849		$	3.22		4.51	$	26,550

Summary of Weighted Average Assumptions Used to Compute Stock-Based Compensation Costs for Stock Options Granted

The weighted average assumptions used to compute the stock-based compensation costs for the stock options granted during the years ended December 31, 2021 and 2020 are as follows:

	Year Ended December 31,
		2021			2020
Risk-free interest rate			0.84	%		1.03	%
Expected dividend yield			—			—
Weighted average expected life (years)			6.07			6.08
Volatility			87.38	%		84.00	%

Summary of Information about Restricted Stock Awards, Restricted Stock Units and Performance-Based Restricted Units Activity

The following table summarizes information about the restricted stock units and performance-based restricted units activity (in thousands, except as indicated and per share data):

	Shares			Weighted average grant date fair value		Weighted average remaining recognition period (in years)
Unvested at December 31, 2021		8,703		$	6.34
Awarded		3,909			8.13
Vested		(3,316	)		4.68
Forfeited		(763	)		6.30
Unvested at December 31, 2022		8,533		$	6.63		1.43

Schedule of Assumptions used to Estimate Fair Value of Stock Options Granted and Stock Purchase Rights under ESPP

The Company estimates the fair value of shares issued to employees under the ESPP using the Black-Scholes option-pricing model. The assumptions used to estimate the fair value of stock purchase rights under the ESPP are as follows:

	Year Ended December 31,
	2022		2021		2020
Risk-free interest rate	0.07% - 4.54%		0.04% - 0.12%		0.12% - 1.58%
Expected dividend yield		—		—		—
Expected term (years)	0.50 - 0.60			0.50		0.50
Volatility	50.29% - 64.53%		49.98% - 78.37%		54.96% - 102.5%

Summary of Common Stock Reserved for Future Issuance

Common stock reserved for future issuance consists of the following (in thousands):

	December 31, 2022
Stock options outstanding		2,916
Unvested restricted stock units		8,533
Employee stock purchase plan		119
Senior convertible notes		17,246
Warrants outstanding		15,491
Authorized for future grant under the Distributor and    Development Services plans		281
Authorized for future grant under the Management    Objective Strategic Incentive Plan		274
Authorized for future grant under the Company    Equity plans		1,269
		46,129

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2022

Income Tax Disclosure [Abstract]

Components of Pretax Income (Loss)

The components of the pretax income (loss) are presented in the following table (in thousands):

	Year Ended December 31,
	2022			2021			2020
U.S. Domestic	$	(146,627	)	$	(127,943	)	$	(78,849	)
Foreign		(5,382	)		(16,219	)		—
Net loss before taxes	$	(152,009	)	$	(144,162	)	$	(78,849	)

Components of Provision for Income Taxes

The components of the provision for income taxes are presented in the following table (in thousands):

	Year Ended December 31,
	2022			2021			2020
Current income tax provision:
Federal	$	(764	)	$	123		$	—
State		(140	)		166			100
Foreign		301			66			35
Total current		(603	)		355			135
Deferred income tax provision:
Federal		583			(159	)		(2	)
State		160			(32	)		12
Total deferred		743			(191	)		10
Total income tax provision	$	140		$	164		$	145

Schedule of Effective Income Tax Rate Reconciliation

he provision for income taxes differs from the amount of income tax determined by applying the applicable U.S. statutory federal income tax rate to pretax loss as a result of the following differences:

	December 31,
	2022			2021			2020
Federal statutory rate		21.00	%		21.00	%		21.00	%
Adjustments for tax effects of:
State taxes, net		0.03			(0.07	)		(0.11	)
Stock-based compensation		(1.79	)		(0.48	)		(0.93	)
Rate differential		0.43			0.43			0.00
Foreign taxes		(0.05	)		(0.05	)		(0.04	)
Other permanent adjustments		0.21			0.08			(1.70	)
Federal uncertain tax positions		0.03			(0.08	)		0.00
Expiration of tax attribute		(1.60	)		0.00			0.00
Other		0.59			(0.13	)		(0.15	)
Valuation allowance		(18.94	)		(20.81	)		(18.25	)
Effective income tax rate		(0.09	)%		(0.11	)%		(0.18	)%

Significant Components of Company's Deferred Tax Assets and Liabilities

Significant components of the Company’s deferred tax assets and liabilities as of December 31, 2022 and 2021 are as follows (in thousands):

	December 31,
	2022			2021
Deferred tax assets:
Net operating losses	$	146,464		$	131,734
Interest		12,979			11,095
Capitalized research and development expenses		12,062			—
Inventory		11,298			8,784
Lease liability		7,975			6,216
Stock-based compensation		5,786			4,318
Accruals and reserves		4,292			7,145
Legal settlement		2,302			1,998
Income tax credit carryforwards		1,566			1,574
Total deferred tax assets		204,724			172,864
Valuation allowance		(162,314	)		(127,209	)
Total deferred tax assets, net of valuation allowance		42,410			45,655
Deferred tax liabilities:
Property and equipment		(19,610	)		(18,404	)
Goodwill and intangibles		(15,518	)		(18,439	)
Right-of-use assets		(7,250	)		(6,256	)
Total deferred tax liabilities		(42,378	)		(43,099	)
Net deferred tax assets	$	32		$	2,556

Summary of Changes to Unrecognized Tax Benefits

The following table summarizes the changes to unrecognized tax benefits (in thousands):

	Year ended December 31,
	2022			2021		2020
Unrecognized tax benefit at the beginning of the year	$	15,165		$	2,452	$	2,452
Increases in tax positions for current year relating to    acquisitions		—			12,713		—
Decreases in tax positions for prior years		(8,929	)		—		—
Increases in tax positions for current year relating to ongoing operations		173			—		—
Decreases in tax positions as a result of a lapse of statute of limitations		(330	)		—		—
Unrecognized tax benefits at the end of the year	$	6,079		$	15,165	$	2,452

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Business Segment and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2022

Segment Reporting [Abstract]

Schedule of Net Revenue and Property, Plant and Equipment, Net, by Geographic Region

	Revenue						Property and equipment, net
	Year Ended December 31,						December 31,
(in thousands)	2022		2021		2020		2022		2021
United States	$	326,697	$	223,911	$	141,079	$	99,050	$	85,320
International		24,170		19,301		3,782		2,902		2,081
Total	$	350,867	$	243,212	$	144,861	$	101,952	$	87,401

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Organization and Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) Segment Customer	Dec. 31, 2021 USD ($) Customer	Dec. 31, 2020 USD ($)
Significant Accounting Policies [Line Items]
Number of Reportable Segments | Segment	1
Accounts receivable payment terms	30 days
Write-down for excess and obsolete inventories	$ 9,792,000	$ 11,147,000	$ 7,044,000
Inventory sold, net	1,500,000	2,500,000	1,000,000.0
Reduction of reserve for inventory	8,200,000	2,100,000	1,300,000
Goodwill impairment charge	0	0	0
Intangible asset impairment charge	0	0	0
Impairment charges of Long-lived assets disposition	0	0	0
Impairment charges of Long-lived assets held for use	0	0	0
Sales, general and administrative	300,013,000	229,271,000	129,156,000
Product Shipment
Significant Accounting Policies [Line Items]
Sales, general and administrative	14,800,000	8,300,000	5,300,000
In-Process Research and Development
Significant Accounting Policies [Line Items]
Intangible asset impairment charge	$ 0	$ 0	$ 0
Minimum
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment	3 years
Intangible assets, amortization period	2 years
Maximum
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment	7 years
Intangible assets, amortization period	12 years
Vesting period	4 years
Percentage of revenue from other distinct performance obligations of total revenue	10.00%
Sales | Customer Concentration Risk
Significant Accounting Policies [Line Items]
Concentration risk, number of customers | Customer	0	0
Accounts Receivable | Customer Concentration Risk
Significant Accounting Policies [Line Items]
Concentration risk, number of customers | Customer	0	0

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Organization and Significant Accounting Policies - Computation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Net loss	$ (152,149)	$ (144,326)	$ (78,994)
Denominator:
Weighted average shares outstanding, basic	103,373	96,197	67,020
Weighted average shares outstanding, diluted	103,373	96,197	67,020
Net loss per share, basic	$ (1.47)	$ (1.50)	$ (1.18)
Net loss per share, diluted	$ (1.47)	$ (1.50)	$ (1.18)

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Organization and Significant Accounting Policies - Anti-Dilutive Securities of Common Stock Excluded from Calculation of Diluted Net Loss Per Share (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities not included in diluted net loss per share (in shares)	44,261	49,578	37,077
Series A Convertible Preferred Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities not included in diluted net loss per share (in shares)		29	29
Options to purchase common stock and employee stock purchase plan
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities not included in diluted net loss per share (in shares)	2,991	3,416	3,951
Unvested restricted stock units
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities not included in diluted net loss per share (in shares)	8,533	8,703	8,216
Warrants to purchase common stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities not included in diluted net loss per share (in shares)	15,491	20,184	24,881
Senior Convertible Notes
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities not included in diluted net loss per share (in shares)	17,246	17,246

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Business Combination - Additional Information (Details) $ in Thousands					12 Months Ended
	Jun. 02, 2021 USD ($)	May 17, 2021 USD ($)	May 13, 2021 USD ($)	May 12, 2021 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 16, 2020 € / shares
Business Acquisition [Line Items]
Transaction-related expenses					$ 120	$ 6,365	$ 4,223
Net loss					152,149	144,326	78,994
Increase in goodwill due to purchase accounting adjustments					1,600
Amortization of acquired intangible assets					10,115	5,348	$ 688
EOS Imaging S.A.
Business Acquisition [Line Items]
Purchase price			$ 100,008
Purchase price in cash			66,528
Transaction-related expenses					10,800
Revenue						30,000
Net loss						17,600
Amortization of acquired intangible assets					7,300
EOS Imaging S.A. | Transaction Related Expenses
Business Acquisition [Line Items]
Transaction-related expenses					$ 0	$ 5,800
EOS Imaging S.A. | Technology-Based Intangible Assets
Business Acquisition [Line Items]
Intangible assets acquired amortized on a straight-line basis over useful lives					10 years
EOS Imaging S.A. | Customer Related Intangible Assets
Business Acquisition [Line Items]
Intangible assets acquired amortized on a straight-line basis over useful lives					7 years
EOS Imaging S.A. | Trade Name Related Intangible Assets
Business Acquisition [Line Items]
Intangible assets acquired amortized on a straight-line basis over useful lives					10 years
EOS Imaging S.A. | EOS Share
Business Acquisition [Line Items]
Purchase price in cash			46,908
EOS Imaging S.A. | OCEANEs
Business Acquisition [Line Items]
Purchase price in cash			19,620
Tender Offer Agreement | EOS Imaging S.A.
Business Acquisition [Line Items]
Share price | € / shares								€ 0.01
Purchase price	$ 100,000	$ 8,500	$ 66,500
Purchase price in cash				$ 25,000
Ownership percentage on share capital and voting rights			80.00%
Tender Offer Agreement | EOS Imaging S.A. | EOS Share
Business Acquisition [Line Items]
Tender offer price | € / shares								2.45
Business acquisition ownership percentage acquired	100.00%		59.00%
Ownership percentage on share capital prior to change in control period				30.00%
Ownership percentage on share capital after change in control date			89.00%
Tender Offer Agreement | EOS Imaging S.A. | OCEANEs
Business Acquisition [Line Items]
Tender offer price | € / shares								€ 7.01
Business acquisition ownership percentage acquired	57.00%		53.00%
Ownership percentage on share capital prior to change in control period				4.00%
Ownership percentage on share capital after change in control date			57.00%

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Business Combination - Schedule of Allocation of Purchase Price to Assets Acquired and Liabilities Assumed Based on Fair Values (Details) - USD ($) $ in Thousands	May 13, 2021	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Goodwill		$ 39,775	$ 39,689
EOS Imaging S.A.
Business Acquisition [Line Items]
Total cash paid at Change in Control Date	$ 66,528
Total fair value of investment in EOS held prior to Change in Control Date	25,026
Fair value of noncontrolling interest acquired after Change in Control Date	8,454
Purchase price	100,008
Cash and cash equivalents	16,778
Accounts receivable	9,083
Inventory	26,681
Other current assets	4,422
Property, plant and equipment, net	1,650
Deferred tax assets	536
Right-of-use asset	4,341
Goodwill	29,469
Definite-lived intangible assets:
Other noncurrent assets	395
Contract liabilities	21,196
Long-term debt	15,297
Other liabilities assumed	28,354
Total identifiable net assets	100,008
EOS Imaging S.A. | Developed Technology
Definite-lived intangible assets:
Definite-lived intangible assets:	56,000
EOS Imaging S.A. | Customer Relationships
Definite-lived intangible assets:
Definite-lived intangible assets:	9,500
EOS Imaging S.A. | Trade Names
Definite-lived intangible assets:
Definite-lived intangible assets:	6,000
EOS Imaging S.A. | EOS Share
Business Acquisition [Line Items]
Total cash paid at Change in Control Date	46,908
Total fair value of investment in EOS held prior to Change in Control Date	23,549
EOS Imaging S.A. | OCEANEs
Business Acquisition [Line Items]
Total cash paid at Change in Control Date	19,620
Total fair value of investment in EOS held prior to Change in Control Date	$ 1,477

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Business Combination - Summary of Unaudited Proforma Results (Details) - EOS Imaging S.A. - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Total revenue	$ 350,867	$ 251,906
Net loss	$ (152,149)	$ (140,441)
Net loss per share, basic and diluted	$ (1.47)	$ (1.46)

XML

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Recurring - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on a recurring basis	$ 62,956	$ 140,010
Liability Classified Equity Award
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities measured at fair value on a recurring basis		2,052
Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on a recurring basis	62,956	140,010
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on a recurring basis	62,956	140,010
Fair Value, Inputs, Level 1 | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value on a recurring basis	$ 62,956	140,010
Fair value, inputs, level 3 | Liability Classified Equity Award
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities measured at fair value on a recurring basis		$ 2,052

XML

Fair Value Measurements - Additional Information (Details) € in Millions, $ in Millions			12 Months Ended
	Mar. 02, 2021 USD ($)	Mar. 02, 2021 EUR (€)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 EUR (€)	Dec. 31, 2020 USD ($)	Mar. 16, 2022 USD ($) Contract	Mar. 16, 2022 EUR (€) Contract	Aug. 31, 2021	Dec. 18, 2020 USD ($)	Dec. 18, 2020 EUR (€)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of share based awards			$ 3.0
2026 Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate									0.75%
Fair value, inputs, level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of foreign currency forward contracts entered | Contract							2	2
Notional amount of foreign currency forward contracts							$ 8.0	€ 6.7		$ 117.9	€ 95.6
Notional amount of each foreign currency forward contract							$ 4.0	€ 3.3
Foreign currency forward contract settled	$ 115.3	€ 95.6		$ 7.6	€ 6.7
Foreign currency forward contract loss recognized				1.7		$ 0.9
Fair value, inputs, level 1 | OCEANE Convertible Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of convertible debt			$ 13.3	14.1
Fair value, inputs, level 1 | 2026 Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate			0.75%
Fair value of convertible debt			$ 288.8	$ 308.1
Debt maturity year			2026

XML

Fair Value Measurements - Reconciliation of Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Details) - Fair value, inputs, level 3 - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 2,052	$ 1,668
Straight-line recognition of liability classified equity award	483	1,028
Change in fair value measurement	$ (586)	$ (644)
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Reclassification to equity classified award	$ (1,949)
Ending balance		$ 2,052

XML

Balance Sheet Details - Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]
Raw materials	$ 13,928	$ 14,671
Work-in-process	3,032	5,712
Finished goods	84,561	71,320
Inventories	$ 101,521	$ 91,703

XML

Balance Sheet Details - Property and Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 196,246	$ 160,125
Less: accumulated depreciation	(94,294)	(72,724)
Property and equipment, net	$ 101,952	87,401
Surgical instruments
Property, Plant and Equipment [Line Items]
Useful Life (in years)	4 years
Property and equipment, gross	$ 158,906	130,432
Machinery and equipment
Property, Plant and Equipment [Line Items]
Useful Life (in years)	7 years
Property and equipment, gross	$ 9,502	11,092
Computer equipment
Property, Plant and Equipment [Line Items]
Useful Life (in years)	3 years
Property and equipment, gross	$ 4,753	5,694
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Useful Life (in years)	5 years
Property and equipment, gross	$ 4,760	3,861
Leasehold improvements
Property, Plant and Equipment [Line Items]
Useful lives	various
Property and equipment, gross	$ 2,965	1,754
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 15,360	$ 7,292

XML

Balance Sheet Details - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Balance Sheet Related Disclosures [Line Items]
Depreciation	$ 31.0	$ 20.3	$ 9.2
Amortization of intangible assets	10.2	6.4	$ 1.8
Additions to definite-lived intangible assets		71.5
Globus
Balance Sheet Related Disclosures [Line Items]
Amortization of intangible assets	32.6
Machinery and equipment
Balance Sheet Related Disclosures [Line Items]
Financing leased assets, gross	$ 0.4	$ 0.4

XML

Balance Sheet Details - Schedule of Goodwill (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Balance Sheet Related Disclosures [Abstract]
December 31, 2021	$ 39,689
Purchase price allocation adjustment	1,628
Foreign currency fluctuation	(1,542)
December 31, 2022	$ 39,775

XML

Balance Sheet Details - Intangible Assets, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Finite Lived Intangible Assets [Line Items]
Total amortized intangible assets, Gross Amount	$ 97,970	$ 97,420
Total amortized intangible assets, Accumulated Amortization	(23,354)	(13,349)
Total amortized intangible assets, net	74,616	84,071
Total Intangible assets, Gross Amount	106,135	98,623
Total intangible assets, net	$ 82,781	$ 85,274
Developed Technology
Finite Lived Intangible Assets [Line Items]
Intangible assets, net Remaining Weighted Avg. Useful Life	7 years	12 years
Total amortized intangible assets, Gross Amount	$ 75,896	$ 74,543
Total amortized intangible assets, Accumulated Amortization	(13,420)	(5,768)
Total amortized intangible assets, net	$ 62,476	$ 68,775
Trademarks and trade names
Finite Lived Intangible Assets [Line Items]
Intangible assets, net Remaining Weighted Avg. Useful Life	8 years	10 years
Total amortized intangible assets, Gross Amount	$ 5,421	$ 5,732
Total amortized intangible assets, Accumulated Amortization	(987)	(477)
Total amortized intangible assets, net	$ 4,434	$ 5,255
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Intangible assets, net Remaining Weighted Avg. Useful Life	4 years	5 years
Total amortized intangible assets, Gross Amount	$ 14,240	$ 14,732
Total amortized intangible assets, Accumulated Amortization	(6,906)	(5,264)
Total amortized intangible assets, net	$ 7,334	$ 9,468
Distribution network
Finite Lived Intangible Assets [Line Items]
Intangible assets, net Remaining Weighted Avg. Useful Life	2 years	3 years
Total amortized intangible assets, Gross Amount	$ 2,413	$ 2,413
Total amortized intangible assets, Accumulated Amortization	(2,041)	(1,840)
Total amortized intangible assets, net	372	573
Software in development
Finite Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets, Gross Amount	2,503
Indefinite-Lived Intangible Assets, net	2,503
In process research and development
Finite Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets, Gross Amount	5,662	1,203
Indefinite-Lived Intangible Assets, net	$ 5,662	$ 1,203

XML

Balance Sheet Details - Schedule of Intangible Assets, Future Expected Amortization Expense (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]
2023	$ 12,402
2024	12,300
2025	10,811
2026	10,811
2027	8,939
Thereafter	19,353
Total	$ 74,616	$ 84,071

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Balance Sheet Details - Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]
Payroll and payroll related	$ 19,764	$ 18,449
Commissions and sales milestones	17,444	12,420
Accrued legal expenses	8,345	4,290
Royalties	4,758	3,466
Orthotec litigation settlement obligation	3,968	4,400
Inventory in-transit	3,548	2,089
Debt issuance costs	2,690
Administration fees	1,912	1,698
Other taxes payable	1,955	3,004
Professional fees	1,238	394
Interest	1,122	1,045
Other	5,638	4,294
Total accrued expenses and other current liabilities	$ 72,382	$ 55,549

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Balance Sheet Details - Schedule of Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]
Royalties	$ 5,739	$ 5,833
Orthotec litigation settlement obligation		3,587
Income tax-related liabilities	980	1,522
Contract liabilities	3,047	2,897
Other	1,777	3,222
Other long-term liabilities	$ 11,543	$ 17,061

XML

Contract Liabilities - Additional Information (Details) - USD ($)		12 Months Ended
	Jan. 01, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Contract with Customer, Liability [Abstract]
Contract liabilities, current		$ 11,956,000	$ 15,255,000
Contract liabilities, non-current		3,047,000	2,897,000
Revenue recognized from contract liabilities		$ 21,581,000
Revenue from contract liabilities	$ 12,900,000		$ 14,600,000
Contract liabilities recognized				$ 0

XML

Contract Liabilities - Opening and Closing Balances of Company's Contract Liabilities (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Contract with Customer, Liability [Abstract]
Balance at December 31, 2021	$ 18,151
Payments received	19,494
Revenue recognized	(21,581)
Foreign currency fluctuation	(1,061)
Balance at December 31 2022	$ 15,003

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Debt - Revolving Credit Facility (Details) - USD ($)	1 Months Ended		12 Months Ended
	Jan. 31, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2020
Line of Credit Facility [Line Items]
Repayment of outstanding balance			$ 27,500,000	$ 56,615,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 50,000,000.0
Increase in borrowing capacity		25,000,000.0
Maximum commitment amount		$ 75,000,000.0
Credit facility outstanding balance			35,300,000
Credit facility matures date		Sep. 29, 2027
Credit facility, matures period prior to final maturity date of 2026 notes		90 days
Debt issuance costs incurred		$ 1,400,000
Debt issuance costs, net of accumulated amortization			$ 1,300,000
Interest rate			7.70%
Unused line fee percentage per annum		0.50%
Lockbox arrangement, percentage of revolving loan limit maximum availability		30.00%
Lockbox arrangement, revolving loan limit number of consecutive business day		5 days
Interest expenses			$ 200,000
Amortization of debt issuance costs			$ 100,000
Revolving Credit Facility | Subsequent Event
Line of Credit Facility [Line Items]
Repayment of outstanding balance	$ 27,500,000
Revolving Credit Facility | Secured Overnight Financing Rate (SOFR)
Line of Credit Facility [Line Items]
Interest rate per annum		3.50%

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Debt - 0.75% Convertible Senior Notes due 2026 (Details) - 0.75% Convertible Senior Notes due 2026	1 Months Ended	12 Months Ended
	Aug. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) Days	Dec. 31, 2021 USD ($)
Line Of Credit Facility [Line Items]
Aggregate principal amount of debt	$ 316,300,000
Interest rate	0.75%
Debt instrument, maturity date	Aug. 01, 2026
Debt instrument, frequency of periodic payment	semi-annually
Debt instrument, Date of first payment	Feb. 01, 2022
Net proceeds	$ 306,200,000
Payment terms		Interest on the 2026 Notes is payable semi-annually in arrears on February 1 and August 1 of each year, beginning on February 1, 2022.
Debt instrument covenant description		The 2026 Notes do not contain any financial covenants
Initial conversion rate | shares	54.5316
Debt instrument converted principal amount	$ 1,000,000
Conversion price per share | $ / shares	$ 18.34
Consecutive trading days | Days		30
Threshold percentage of par value trigger	130.00%	98.00%
Number of conversion price, consecutive business days | Days		5
Number of conversion price, consecutive trading days | Days		10
Debt instrument converted principal amount		$ 1,000
Debt conversion start date		Feb. 02, 2026
Convertible notes redemption start date	Aug. 06, 2024
Convertible notes, redemption price percentage	100.00%
Principal payments due	$ 0
Effective interest rate		1.40%
Interest expenses		$ 4,400,000	$ 1,700,000
Amortization of debt issuance costs		$ 2,000,000.0	$ 800,000
Minimum
Line Of Credit Facility [Line Items]
Threshold trading days | Days		20
Maximum
Line Of Credit Facility [Line Items]
Threshold percentage of par value trigger		130.00%

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Debt - Outstanding Principal Amount and Carrying Value of Notes (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Principal	$ 371,749	$ 336,090
Net carrying value	364,459	326,831
2026 Notes
Debt Instrument [Line Items]
Principal	316,250	$ 316,250
Unamortized debt issuance costs	(7,290)
Net carrying value	$ 308,960

XML

Debt - Capped Call Transactions (Details) - 0.75% Convertible Senior Notes due 2026 - Capped Call Transactions $ in Millions		12 Months Ended
	Aug. 05, 2021 USD ($) $ / shares	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Initial cap price | $ / shares	27.68
Percentage of premium over last reported sale price of common stock	100.00%
Cost of capped call transactions	$ 39.9
Reduction to additional paid-in capital		$ 39.9

XML

Debt - OCEANE Convertible Bonds (Details) $ in Thousands, € in Millions				1 Months Ended		8 Months Ended	12 Months Ended
	Jun. 20, 2021 Days	May 31, 2018 USD ($) ConvertibleBond shares	May 31, 2018 EUR (€) ConvertibleBond shares	Jul. 31, 2021 USD ($) shares	Jul. 31, 2021 EUR (€) shares	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 EUR (€)	May 31, 2018 EUR (€) shares
Debt Instrument [Line Items]
Carrying value of OCEANEs | $						$ 336,090	$ 371,749
OCEANE Convertible Bonds
Debt Instrument [Line Items]
Debt instrument redemption				25,971	25,971
Debt instrument redemption amount				$ 200	€ 0.2
Carrying value of OCEANEs							$ 13,300	€ 12.5
OCEANE Convertible Bonds | EOS Imaging S.A.
Debt Instrument [Line Items]
Number of OCEANE convertible bonds issued | ConvertibleBond		4,344,651	4,344,651
Aggregate gross proceeds		$ 34,300	€ 29.5
Interest rate		6.00%							6.00%
Payment terms							The OCEANEs are unsecured obligations of EOS, rank equally with all other unsecured and unsubordinated obligations of EOS, and pay interest at a rate equal to 6% per year, payable semiannually in arrears on May 31 and November 30 of each year, beginning November 30, 2018.
Debt instrument, frequency of periodic payment		semiannually	semiannually
Debt instrument, Date of first payment		Nov. 30, 2018	Nov. 30, 2018
Debt instrument, maturity date		May 31, 2023	May 31, 2023
Interest expenses | $						$ 700	$ 800
Debt instrument purchased		2,486,135	2,486,135
Debt instrument outstanding		1,858,516							1,858,516
Aggregate principal amount of debt		$ 15,300							€ 12.6
Initial conversion rate		1	1
Threshold percentage of par value trigger	150.00%
Consecutive trading days | Days	40
Threshold percentage of debt instrument outstanding	15.00%
OCEANE Convertible Bonds | EOS Imaging S.A. | Minimum
Debt Instrument [Line Items]
Consecutive trading days | Days	20

XML

Debt - Other Debt Agreements (Details) - EOS Imaging S.A. $ in Millions	1 Months Ended	4 Months Ended	12 Months Ended
	Feb. 28, 2022	Apr. 30, 2021 EUR (€) Agreement	Dec. 31, 2022 USD ($)	Dec. 31, 2022 EUR (€)
Line Of Credit Facility [Line Items]
Number of loan agreements | Agreement		2
Debt instrument term	12 months	12 months
Percentage of principal state guaranteed		90.00%
Percentage of cost of state guaranty		0.25%
Debt instrument interest-free rate amount		€ 3,300,000
Effective interest rate		1.75%
Debt instrument interest rate amount		€ 1,500,000
Line of credit facility description			The loan capital and loan guaranty costs are payable in full at the end of the 12-month term or the loan may be extended up to 5 additional years. If the Company chooses to extend the debt, the election must be made by the Company between months 8 and 11 of the 12-month term.
Line of credit facility extension description			The extension will carry an interest rate at the banks’ refinancing cost, to be applied from year 2 to year 6 and an increased state guaranty cost (50 to 200 bps, as per a scale with company size and extension year).
Debt instrument, extended maturity year	2027
Loan One
Line Of Credit Facility [Line Items]
Outstanding loan obligation			$ 3.5	€ 3,300,000
Weighted average interest rate on loan			0.98%	0.98%
Percentage of weighted average cost of state guaranty			0.69%
Loan Two
Line Of Credit Facility [Line Items]
Outstanding loan obligation			$ 1.6	€ 1,500,000
Weighted average interest rate on loan			1.25%	1.25%
Percentage of weighted average cost of state guaranty			1.00%
Maximum
Line Of Credit Facility [Line Items]
Debt instrument loan extended additional period		5 years

XML

Debt - Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Total	$ 371,749	$ 336,090
Less: debt discount	(7,290)	(9,259)
Net carrying value	364,459	326,831
Less: current portion of long-term debt	(14,948)	(342)
Total long-term debt, net of current portion	349,511	326,489
Revolving Credit Facility
Debt Instrument [Line Items]
Total	35,251
Other Notes Payable
Debt Instrument [Line Items]
Total	1,869	386
2026 Notes
Debt Instrument [Line Items]
Total	316,250	316,250
Net carrying value	308,960
OCEANE Convertible Bonds
Debt Instrument [Line Items]
Total	13,333	14,113
EOS PGE Loans
Debt Instrument [Line Items]
Total	$ 5,046	$ 5,341

XML

Debt - Principal Payments on Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Disclosure [Abstract]
2023	$ 14,957
2024	1,731
2025	1,693
2026	317,513
2027	35,855
Total	371,749	$ 336,090
Less: debt discount	(7,290)	(9,259)
Net carrying value	364,459	326,831
Less: current portion of long-term debt	(14,948)	(342)
Total long-term debt, net of current portion	$ 349,511	$ 326,489

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Debt - Paycheck Protection Loan (Details) - USD ($) $ in Thousands		12 Months Ended
	Apr. 23, 2020	Dec. 31, 2021	Dec. 31, 2020
Line Of Credit Facility [Line Items]
Gain (loss) on debt extinguishment		$ (7,434)	$ (7,612)
Paycheck Protection Program Loans
Line Of Credit Facility [Line Items]
Proceeds from loan	$ 4,300
Debt forgiveness	4,300
Gain (loss) on debt extinguishment	$ 4,300

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Debt - Squadron Medical Credit Agreement (Details) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Aug. 10, 2021	Dec. 16, 2020	Nov. 06, 2018	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022
Line Of Credit Facility [Line Items]
Issuance of common stock				99,627,000		106,673,000
Gain (loss) on debt extinguishment				$ (7,434)	$ (7,612)
Number of warrants outstanding						15,491,000
Squadron Medical Term Loan
Line Of Credit Facility [Line Items]
Issuance of common stock		2,700,270
Common stock price per share		$ 11.11
Additional debt issuance costs		$ 3,800
New debt issuance costs		30,000
Gain (loss) on debt extinguishment			$ (6,100)	$ (11,700)
Debt instrument capitalized non-cash costs			$ 3,800
Repaid of outstanding principal	$ 45,000
Accrued interest	$ 200
Squadron Medical Term Loan | Common Stock | Participant Lender
Line Of Credit Facility [Line Items]
Number of warrants outstanding						6,759,530
Squadron Medical Term Loan | Term Loan
Line Of Credit Facility [Line Items]
Additional line of credit		$ 15,000
Debt instrument, maturity date		Jun. 30, 2026
Secured debt agreement		$ 30,000

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Debt - Inventory Financing Agreement (Details) - Inventory Financing Agreement - USD ($)	Aug. 10, 2021	Dec. 31, 2022	May 31, 2021	Nov. 30, 2020	Nov. 30, 2018
Line Of Credit Facility [Line Items]
Maximum borrowing capacity			$ 6,000,000.0	$ 6,000,000.0	$ 3,000,000.0
Current availability		$ 9,000,000.0
Repaid of outstanding principal	$ 8,100,000
Accrued interest	$ 100,000

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Debt - Midcap Facility Agreement (Details) $ in Millions	May 29, 2020 USD ($)
Debt Disclosure [Abstract]
Final settlement under agreement	$ 9.6

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Commitments and Contingencies - Additional Information (Details) $ in Thousands		12 Months Ended
	Dec. 04, 2019 ft²	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Loss Contingencies [Line Items]
Lessee operating lease, description		Any short-term leases defined as twelve months or less or month-to-month leases are excluded and continue to be expensed each month. Total costs associated with these short-term leases is immaterial to all years presented.
Right-of-use assets		$ 28,360	$ 25,283
Lease liability		31,404
Remaining minimum purchase commitment required		$ 27,400
Building Lease
Loss Contingencies [Line Items]
Operating lease term	10 years
Area for facility of office, engineering and research and development space | ft²	121,541
Lease agreement commencement date	Feb. 01, 2021
Lease agreement expiry date	Jan. 31, 2031
Lease renewal term	260 months
Annual increase in base rent	3.00%
Minimum
Loss Contingencies [Line Items]
Operating lease term		1 year
Maximum
Loss Contingencies [Line Items]
Operating lease term		10 years

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Commitments and Contingencies - Future Minimum Annual Lease Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
2023	$ 4,937
2024	5,033
2025	5,019
2026	5,080
2027	5,121
Thereafter	13,057
Total undiscounted lease payments	38,247
Less: imputed interest	(6,843)
Operating lease liability	31,404
Less: current portion of operating lease liability	(4,842)	$ (4,212)
Operating lease liability, less current portion	$ 26,562	$ 24,383

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Commitments and Contingencies - Summary of Weighted-Average Remaining Lease Term and Discount Rate (Details)	Dec. 31, 2022	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Weighted average remaining lease term (years)	7 years 8 months 12 days	8 years 7 months 6 days
Weighted average discount rate	5.50%	8.50%

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Commitments and Contingencies - Summary of Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Rent expense	$ 4,643	$ 4,482	$ 1,300
Cash paid for amounts included in measurement of lease liabilities	$ 4,409	$ 1,795	$ 1,400

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Orthotec Settlement - Additional Information (Details) - Orthotec LLC, litigation settlement $ in Thousands			1 Months Ended			12 Months Ended
	Oct. 01, 2014 USD ($)	Aug. 13, 2014 USD ($) Installment	Sep. 30, 2014 USD ($)	Apr. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2022 USD ($)
Loss Contingencies [Line Items]
Judgment assessed by court for (against) company		$ 49,000
Payments of settlement				$ 15,750	$ 1,750	$ 53,400
Number of quarterly installments | Installment		28
Litigation settlement interest, quarterly installments, amount		$ 1,100
Litigation settlement, final installment amount		700
Litigation settlement, remaining outstanding balance including interest						$ 4,100
HealthpointCapital, LLC
Loss Contingencies [Line Items]
Contribution amount to be paid by other party			$ 5,000
Beginning Fourth Quarter of 2014
Loss Contingencies [Line Items]
Litigation settlement, full amount to be paid in quarterly installments	$ 31,500
Litigation settlement interest, quarterly installments, amount		$ 1,100
Litigation settlement interest rate		7.00%
Litigation settlement payments, quarterly payment amount		$ 1,100
Final Installment
Loss Contingencies [Line Items]
Number of quarterly installments | Installment		1

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Orthotec Settlement - Schedule of Reconciliation of Total Net Settlement Obligation (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Litigation settlement obligation - short-term portion	$ 3,968	$ 4,400
Litigation settlement obligation - long-term portion		3,587
Total	3,968	7,987
Future imputed interest	96	478
Total litigation settlement obligation, net	$ 4,064	$ 8,465

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Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Aug. 03, 2021	Mar. 01, 2021	Oct. 16, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Subsidiary Sale Of Stock [Line Items]
Common stock, shares authorized				200,000,000	200,000,000
Net proceeds from offering					$ 131,828	$ 107,698
Redeemable preferred stock carrying value				$ 23,603	$ 23,603
Redeemable preferred stock authorized				20,000,000	20,000,000
Redeemable preferred stock, price per share				$ 0.0001	$ 0.0001
Warrants outstanding				15,491,000
Stock-based compensation				$ 40,556	$ 36,450	$ 17,659
Patrick S. Miles
Subsidiary Sale Of Stock [Line Items]
Number of warrants issued (in shares)				0
SafeOp Surgical, Inc.
Subsidiary Sale Of Stock [Line Items]
Warrant expiration period				5 years
Proceeds from exercise of warrant					$ 100
Number of warrants exercised				257,000	970,000
Warrants outstanding				938,000
Squadron Medical | Participant Lender
Subsidiary Sale Of Stock [Line Items]
Number of warrants issued (in shares)				0
2017 PIPE Warrants
Subsidiary Sale Of Stock [Line Items]
Warrant expiration period				5 years
Proceeds from exercise of warrant				$ 3,500	$ 1,600
Number of warrants exercised				2,312,000	795,000
Warrants outstanding				0
2018 Common Stock Warrants
Subsidiary Sale Of Stock [Line Items]
Warrant expiration period				5 years
Proceeds from exercise of warrant				$ 400	$ 1,500
Number of warrants exercised				2,168,000	2,901,000
Warrants outstanding				6,311,000
Exercise price of warrants				$ 3.50
Redeemable Preferred Stock
Subsidiary Sale Of Stock [Line Items]
Redeemable preferred stock carrying value				$ 23,600	$ 23,600
Redeemable preferred stock authorized				20,000,000	20,000,000
Redeemable preferred stock redemption, price per share				$ 9.00	$ 9.00
Redeemable preferred stock, price per share				$ 7.11	$ 7.11
Private Placement
Subsidiary Sale Of Stock [Line Items]
Common stock issued		12,421,242
Net proceeds from private placement		$ 131,800
Gross proceeds from private placement		138,000
Private placement fee net		$ 6,200
Private Placement | Common Stock
Subsidiary Sale Of Stock [Line Items]
Common stock issued					12,421,000
Underwritten Public Offering | Common Stock
Subsidiary Sale Of Stock [Line Items]
Common stock issued			13,142,855
Net proceeds from offering			$ 107,700
Gross proceeds from offering			115,000
Common stock fee net			$ 7,300
0.75% Convertible Senior Notes
Subsidiary Sale Of Stock [Line Items]
Share repurchase, authorized amount	$ 25,000
Number of shares repurchased	1,806,358			0		0
Aggregate price of repurchased shares	$ 25,000

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Equity - Summary of Outstanding Warrants (Details)	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Class Of Warrant Or Right [Line Items]
Number of Warrants	15,491,000
2017 PIPE Warrants
Class Of Warrant Or Right [Line Items]
Number of Warrants	0
2018 PIPE Warrants
Class Of Warrant Or Right [Line Items]
Number of Warrants	6,311,000
Strike Price | $ / shares	$ 3.50
Expiration	May 2023
SafeOp Surgical Merger Warrants
Class Of Warrant Or Right [Line Items]
Number of Warrants	938,000
Strike Price | $ / shares	$ 3.50
Expiration	May 2023
2018 Squadron Medical Warrants
Class Of Warrant Or Right [Line Items]
Number of Warrants	845,000
Strike Price | $ / shares	$ 3.15
Expiration	May 2027
2019 Squadron Medical Warrants
Class Of Warrant Or Right [Line Items]
Number of Warrants	4,839,000
Strike Price | $ / shares	$ 2.17
Expiration	May 2027
2020 Squadron Medical Warrants
Class Of Warrant Or Right [Line Items]
Number of Warrants	1,076,000
Strike Price | $ / shares	$ 4.88
Expiration	May 2027
Executive Warrants
Class Of Warrant Or Right [Line Items]
Number of Warrants	1,327,000
Strike Price | $ / shares	$ 5.00
Expiration	December 2024
Other Warrants
Class Of Warrant Or Right [Line Items]
Number of Warrants	155,000
Strike Price | $ / shares	$ 6.97
Expiration	Various through February 2026

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Stock Benefit Plans and Stock-Based Compensation - Additional Information (Details) - USD ($)		1 Months Ended	3 Months Ended	12 Months Ended
	Jun. 16, 2021	Jul. 31, 2019	Sep. 30, 2016	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jun. 17, 2020	Apr. 08, 2020	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance				46,129,000
Straight-line basis over a weighted average period				1 year 9 months
Stock-based compensation				$ 40,556,000	$ 36,450,000	$ 17,659,000
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants available to be granted				295,000
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				4 years
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance				2,916,000
Weighted-average grant-date fair value of stock options granted					$ 9.88	$ 4.71
Stock options granted				0
Total intrinsic value of stock options exercised				$ 3,400,000	$ 6,800,000	$ 2,300,000
Share price				$ 12.35
Unrecognized compensation expense for stock options and awards expected to be recognized				$ 300,000
Unvested Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted under the plan				3,909,000
Straight-line basis over a weighted average period				1 year 5 months 4 days
Weighted average grant-date fair value of awards granted				$ 8.13	$ 12.79	$ 4.87
Unrecognized compensation expense for restricted stock awards, restricted stock units and performance-based restricted units expected to be recognized				$ 41,400,000
Total fair value of awards vested				$ 35,200,000	$ 43,900,000	$ 13,100,000
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance				119,000
Number of shares available for grant	500,000,000
Employee stock purchase plan, maximum annual compensation percentage	20.00%
Employee stock purchase plan, maximum annual compensation amount	$ 21,250
Purchase price equal to the lower of the fair market value per share (at closing) of Company common stock	85.00%
Employee stock purchase plan, offering period	6 months
Shares of common stock issued under the ESPP				429,000,000	227,000	379,000
Stock-based compensation				$ 1,600,000	$ 1,100,000	$ 1,000,000.0
2016 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance			1,083,333
Number of shares available for grant				791,000			7,000,000
2016 Equity Incentive Plan | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period			10 years
Award vesting period			4 years
Exercise price minimum percentage of market price on grant date			100.00%
2016 Equity Incentive Plan | Employee Stock Option | 10 Percent Stockholder
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period			5 years
Exercise price minimum percentage of market price on grant date			110.00%
Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance				477,000
Maximum award to be deductible other than options				$ 1,000,000.0
2019 Management Objective Strategic Incentive Plan | Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant				12,500
2019 Management Objective Strategic Incentive Plan | Board of Directors Chairman | Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share authorized grant of warrants		500,000
Maximum grant of shares per participant		50,000
2019 Management Objective Strategic Incentive Plan | Unvested Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant				213,000
2017 Distributor Inducement Plan | Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued				392,000
Number of warrants available to be granted				305,000
2017 Distributor Inducement Plan | Board of Directors Chairman | Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share authorized grant of warrants									1,000,000
2017 Distributor Inducement Plan | Restricted Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted under the plan				414,000
Two Thousand Seventeen Development Services Plan | Board of Directors Chairman | Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant				0				8,000,000

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Stock Benefit Plans and Stock-Based Compensation - Summary of Compensation Cost for Stock-Based Compensation Arrangements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 40,556	$ 36,450	$ 17,659
Cost of sales
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	2,597	737	512
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	5,016	4,056	2,114
Sales, General and Administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 32,943	$ 31,657	$ 15,033

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Stock Benefit Plans and Stock-Based Compensation - Summary of Stock Option Activity (Details) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Shares Outstanding, Beginning balance | shares	3,351
Shares, Exercised | shares	(378)
Shares, Forfeited | shares	(57)
Shares Outstanding, Ending balance | shares	2,916
Shares, Options vested and expected to vest | shares	2,916
Shares, Options exercisable | shares	2,849
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted average exercise price, Outstanding, Beginning balance | $ / shares	$ 3.50
Weighted average exercise price,Exercised | $ / shares	2.84
Weighted average exercise price, Forfeited | $ / shares	13.83
Weighted average exercise price, Outstanding, Ending balance | $ / shares	3.38
Weighted average exercise price, Options vested and expected to vest | $ / shares	3.38
Weighted average exercise price, Options exercisable | $ / shares	$ 3.22
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted average remaining contractual term, Outstanding, balance	4 years 6 months 29 days
Weighted average remaining contractual term, Options vested and expected to vest	4 years 6 months 29 days
Weighted average remaining contractual term, Options exercisable	4 years 6 months 3 days
Aggregate intrinsic value, Outstanding | $	$ 26,783
Aggregate intrinsic value, Options vested and expected to vest | $	26,783
Aggregate intrinsic value, Options exercisable | $	$ 26,550

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Stock Benefit Plans and Stock-Based Compensation - Summary of Weighted Average Assumptions Used to Compute Stock-Based Compensation Costs for Stock Options Granted (Details) - Share-based Payment Arrangement, Option	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.84%	1.03%
Weighted average expected life (years)	6 years 25 days	6 years 29 days
Volatility	87.38%	84.00%

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Stock Benefit Plans and Stock-Based Compensation - Summary of Information about Restricted Stock Awards, Restricted Stock Units and Performance-Based Restricted Units Activity (Details) - Unvested restricted stock units - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Shares, Unvested beginning balance	8,703
Shares, Awarded	3,909
Shares, Vested	(3,316)
Shares, Forfeited	(763)
Shares, Unvested ending balance	8,533	8,703
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted average grant date fair value, Unvested beginning balance	$ 6.34
Weighted average grant date fair value, Awarded	8.13	$ 12.79	$ 4.87
Weighted average grant date fair value, Vested	4.68
Weighted average grant date fair value, Forfeited	6.30
Weighted average grant date fair value, Unvested ending balance	$ 6.63	$ 6.34
Weighted average remaining recognition period (in years)	1 year 5 months 4 days

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Stock Benefit Plans and Stock-Based Compensation - Schedule of Assumptions used to Estimate Fair Value of Stock Options Granted and Stock Purchase Rights under ESPP (Details) - ESPP	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate, minimum	0.07%	0.04%	0.12%
Risk-free interest rate, maximum	4.54%	0.12%	1.58%
Weighted average expected life (years)		6 months	6 months
Volatility, minimum	50.29%	49.98%	54.96%
Volatility, maximum	64.53%	78.37%	102.50%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average expected life (years)	7 months 6 days
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average expected life (years)	6 months

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Stock Benefit Plans and Stock-Based Compensation - Summary Common Stock Reserved for Future Issuance (Details) shares in Thousands	Dec. 31, 2022 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance	46,129
Unvested Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance	8,533
Senior Convertible Notes
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance	17,246
Warrants Outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance	15,491
Authorized for Future Grant Under the Distributor and Development Services Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance	281
Authorized for Future Grant Under the Management Objective Strategic Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance	274
Authorized for Future Grant Under the Company Equity Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance	1,269
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance	2,916
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance	119

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Income Taxes - Components of Pretax Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
U.S. Domestic	$ (146,627)	$ (127,943)	$ (78,849)
Foreign	(5,382)	(16,219)
Net loss before taxes	$ (152,009)	$ (144,162)	$ (78,849)

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Income Taxes - Components of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current income tax provision:
Federal	$ (764)	$ 123
State	(140)	166	$ 100
Foreign	301	66	35
Total current	(603)	355	135
Deferred income tax provision:
Federal	583	(159)	(2)
State	160	(32)	12
Total deferred	743	(191)	10
Total income tax provision	$ 140	$ 164	$ 145

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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Federal statutory rate	21.00%	21.00%	21.00%
Adjustments for tax effects of:
State taxes, net	0.03%	(0.07%)	(0.11%)
Stock-based compensation	(1.79%)	(0.48%)	(0.93%)
Rate differential	0.43%	0.43%	0.00%
Foreign taxes	(0.05%)	(0.05%)	(0.04%)
Other permanent adjustments	0.21%	0.08%	(1.70%)
Federal uncertain tax positions	0.03%	(0.08%)	0.00%
Expiration of tax attribute	(1.60%)	0.00%	0.00%
Other	0.59%	(0.13%)	(0.15%)
Valuation allowance	(18.94%)	(20.81%)	(18.25%)
Effective income tax rate	(0.09%)	(0.11%)	(0.18%)

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Income Taxes - Significant Components of Company's Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Net operating losses	$ 146,464	$ 131,734
Interest	12,979	11,095
Capitalized research and development expenses	12,062
Inventory	11,298	8,784
Lease liability	7,975	6,216
Stock-based compensation	5,786	4,318
Accruals and reserves	4,292	7,145
Legal settlement	2,302	1,998
Income tax credit carryforwards	1,566	1,574
Total deferred tax assets	204,724	172,864
Valuation allowance	(162,314)	(127,209)
Total deferred tax assets, net of valuation allowance	42,410	45,655
Deferred tax liabilities:
Property and equipment	(19,610)	(18,404)
Goodwill and intangibles	(15,518)	(18,439)
Right-of-use assets	(7,250)	(6,256)
Total deferred tax liabilities	(42,378)	(43,099)
Net deferred tax assets	$ 32	$ 2,556

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Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2018
Operating Loss Carryforwards [Line Items]
Deferred tax asset, valuation allowance	$ 162,314,000	$ 127,209,000
Deferred tax asset, valuation allowance increase (decrease)	$ 35,100,000	39,700,000	$ 14,400,000
Number of years cumulative pretax loss	3 years
Unrecognized tax benefits, if recognized, would impact the effective income tax rate	$ 5,600,000	14,500,000	2,000,000.0
Accrued interest and penalties	40,000.00	$ 200,000	$ 0
Operating loss carryforwards state	375,500,000
Operating loss carryforwards federal	487,900,000
Operating loss carryforwards foreign	112,900,000
Federal and state net operating loss carryforwards, expiring year				2042
State research and development tax credit carryforwards	$ 3,200,000
Cumulative change in ownership percentage	50.00%
Period for cumulative change in ownership	3 years
Federal
Operating Loss Carryforwards [Line Items]
Operating losses after December 31, 2017	$ 358,700,000
State
Operating Loss Carryforwards [Line Items]
Operating losses after December 31, 2017	$ 74,900,000

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Income Taxes - Summary of Changes to Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefit at the beginning of the year	$ 15,165	$ 2,452	$ 2,452
Increases in tax positions for current year relating to acquisitions		12,713	0
Decrease in tax positions for prior years	(8,929)
Increase in tax positions for current year relating to ongoing operations	173
Decrease in tax positions as a result of a lapse of statute of limitations	330
Unrecognized tax benefits at the end of the year	$ 6,079	$ 15,165	$ 2,452

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Related Party Transactions - Additional Information (Details) - USD ($) $ in Thousands		1 Months Ended		12 Months Ended
	Aug. 13, 2014	Apr. 30, 2014	Mar. 31, 2014	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Squadron Supplier Affiliate | Inventory Financing Agreement
Related Party Transaction [Line Items]
Purchased inventory from related party				$ 10,300	$ 7,700	$ 4,000
Due to affiliate				2,400	$ 800
Orthotec LLC, litigation settlement
Related Party Transaction [Line Items]
Payments of settlement		$ 15,750	$ 1,750	$ 53,400
Judgment assessed by court for (against) company	$ (49,000)

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Business Segment and Geographic Information - Additional Information (Details)	12 Months Ended
	Dec. 31, 2022 Segment
Segment Reporting [Abstract]
Number of operating segments	1

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Business Segment and Geographic Information - Schedule of Net Revenue and Property, Plant and Equipment, Net, by Geographic Region (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	$ 350,867	$ 243,212	$ 144,861
Property and equipment, net	101,952	87,401
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	326,697	223,911	141,079
Property and equipment, net	99,050	85,320
International
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	24,170	19,301	$ 3,782
Property and equipment, net	$ 2,902	$ 2,081

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Subsequent Events - Additional Information (Details) - USD ($)	Jan. 06, 2023	Dec. 31, 2022	Dec. 31, 2021
Subsequent Event [Line Items]
Initial term loan facility		$ 364,459,000	$ 326,831,000
Braidwell Transaction Holdings, LLC | Subsequent Event
Subsequent Event [Line Items]
Long term debt	$ 150,000,000.0
Initial term loan facility	100,000,000.0
Option to draw amount	$ 50,000,000.0
Debt Instrument Maturity Month Year	2028-01
Debt bear interest at annual rate	5.75%