UNITED STATES
 SECURITIES AND EXCHANGE COMMISSION
 Washington, D.C. 20549

 FORM 10-K

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

 For the year ended December 31, 2023

 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 001-37372

 Collegium Pharmaceutical, Inc.
 (Exact name of registrant as specified in its charter)

 Virginia
(State or other jurisdiction of incorporation or organization)

 03-0416362
(I.R.S. Employer Identification Number)

 100 Technology Center Drive
 Stoughton, MA
(Address of principal executive offices)

 02072
(Zip Code)

 ( 781) 713-3699
 (Registrant's telephone number, including area code)

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

 Title of each class

 Trading Symbol(s)

 Name of exchange on which registered:

 Common stock, par value $0.001 per share

 COLL

 The NASDAQ Global Select Market

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

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

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

 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 the 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 (Do not check if
smaller reporting company)

 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 checkmark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes No

 As of June 30, 2023, the last business day of the registrant's most recently completed second fiscal quarter, the aggregate market value of the registrant's common stock held by non-affiliates of the registrant was approximately $ 741.8 million, based on the closing price of the registrant's common stock on The NASDAQ Global Select Market on June 30, 2023 of $21.49 per share. Shares of the registrant's common stock held by each officer and director and each person known to the registrant to own 10% or more of the outstanding common stock of the registrant have been excluded in that such persons may be deemed affiliates. This determination of affiliate status is not a determination for other purposes.

 As of January 31, 2024, there were 31,959,828 shares of the registrant's common stock, par value, $0.001 per share, outstanding.

 DOCUMENTS INCORPORATED BY REFERENCE

 Portions of the registrant's definitive proxy statement for its 2024 Annual Meeting of Shareholders (the "Proxy Statement"), to be filed within 120 days of the registrant's year ended December 31, 2023, are incorporated by reference in Part II and Part III of this Report on Form 10-K. Except with respect to information specifically incorporated by reference in this Form 10-K, the Proxy Statement is not deemed to be filed as part of this Form 10-K.

 Page No.

 Item 1.

 Business

 Item 1A.

 Risk Factors

 Item 1B.

 Unresolved Staff Comments

 Item 1C.

 Cybersecurity

 Item 2.

 Properties

 Item 3.

 Legal Proceedings

 Item 4.

 Mine Safety Disclosures

 Item 5.

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

 Item 6.

 [Reserved]

 Item 7.

 Management's Discussion and Analysis of Financial Condition and Results of Operations

 Item 7A.

 Quantitative and Qualitative Disclosures about Market Risk

 Item 8.

 Consolidated Financial Statements and Supplementary Data

 Item 9.

 Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

 Item 9A.

 Controls and Procedures

 Item 9B.

 Other Information

 Item 9C.

 Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

 Item 10.

 Directors, Executive Officers and Corporate Governance

 Item 11.

 Executive Compensation

 Item 12.

 Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

 Item 13.

 Certain Relationships and Related Transactions, and Director Independence

 Item 14.

 Principal Accountant Fees and Services

 Item 15.

 Exhibits and Financial Statement Schedules

 Item 16.

 Form 10-K Summary

 SIGNATURES

 Forward-Looking Statements

 Statements made in this Annual Report on Form 10-K that are not statements of historical or current facts, such as those under the heading "Management's Discussion and Analysis of Financial Condition and Results of Operations," are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements discuss our current expectations and projections relating to our financial condition, results of operations, plans, objectives, future performance and business. These statements may be preceded by, followed by or include the words "aim," "anticipate," "believe," "estimate," "expect," "forecast," "intend," "outlook," "plan," "potential," "project," "projection," "seek," "may," "could," "would," "should," "can," "can have," "likely," the negatives thereof and other words and terms of similar meaning.

 Forward-looking statements are inherently subject to risks, uncertainties and assumptions; they are not guarantees of performance. You should not place undue reliance on these statements. We have based these forward-looking statements on our current expectations and projections about future events. Although we believe that our assumptions made in connection with the forward-looking statements are reasonable, we cannot assure you that the assumptions and expectations will prove to be correct.

 You should understand that the following important factors could affect our future results and could cause those results or other outcomes to differ materially from those expressed or implied in our forward-looking statements:

 our ability to commercialize and grow sales of our products;

 our ability to maintain regulatory approval of our products, and any related restrictions, limitations, and/or warnings in the label of an approved product;

 the size of the markets for our products, and our ability to service those markets;

 the success of competing products that are or become available;

 our ability to obtain and maintain reimbursement and third-party payor contracts with favorable terms for our products;

 the costs of commercialization activities, including marketing, sales and distribution;

 the rate and degree of market acceptance of our products;

 changing market conditions for our products;

 the outcome of any patent infringement, opioid-related or other litigation that may be brought by or against us;

 the outcome of any governmental investigation related to the manufacture, marketing and sale of opioid medications;

 the performance of our third-party suppliers and manufacturers;

 our ability to secure adequate supplies of active pharmaceutical ingredients for each of our products, manufacture adequate quantities of commercially salable inventory and maintain our supply chain;

 our ability to effectively manage our relationships with licensors and to commercialize products that we in-license from third parties;

 our ability to attract collaborators with development, regulatory and commercialization expertise;

 our ability to obtain funding for our business development;

 our ability to comply with the terms of our outstanding indebtedness;

 regulatory and legislative developments in the United States, including the adoption of opioid stewardship and similar taxes that may impact our business;

 our ability to obtain and maintain sufficient intellectual property protection for our products;

 our ability to comply with stringent government regulations relating to the manufacturing and marketing of pharmaceutical products, including U.S. Drug Enforcement Agency ("DEA") compliance;

 our customer concentration, which may adversely affect our financial condition and results of operations;

 the accuracy of our estimates regarding expenses, revenue, capital requirements and need for additional financing; and

 the other risks, uncertainties and factors discussed under the heading "Risk Factors" in this Annual Report on Form 10-K.

 In light of these risks and uncertainties, expected results or other anticipated events or circumstances discussed in this Annual Report on Form 10-K (including the exhibits hereto) might not occur. We undertake no obligation, and specifically decline any obligation, to publicly update or revise any forward-looking statements, even if experience or

 future developments make it clear that projected results expressed or implied in such statements will not be realized, except as may be required by law.

 These and other risks are described under the heading "Risk Factors" in this Annual Report on Form 10-K. Those factors and the other risk factors described therein are not necessarily all of the important factors that could cause actual results or developments to differ materially from those expressed in any of our forward-looking statements. Other unknown or unpredictable factors also could harm our results. Consequently, there can be no assurance that actual results or developments anticipated by us will be realized or, even if substantially realized, that they will have the expected consequences to, or effects on, us. Given these uncertainties, prospective investors are cautioned not to place undue reliance on such forward-looking statements.

 Item 1. Business

 Overview

 Our mission is to build a leading, diversified specialty pharmaceutical company committed to improving the lives of people living with serious medical conditions. We have leveraged our research and development efforts as well as acquisitions and licensing relationships with third parties, to develop a portfolio of meaningfully differentiated products for use in the treatment of moderate to severe pain. We commercialize our pain portfolio, consisting of Xtampza ER, Nucynta ER and Nucynta IR (collectively the "Nucynta Products"), Belbuca, and Symproic, in the United States.

 Xtampza ER

 Our company was formed in 2002 to help address the opioid epidemic through the development of Xtampza ER, a pain treatment option designed with abuse deterrent properties. Xtampza ER is an abuse-deterrent, extended-release, oral formulation of oxycodone. Xtampza ER is formulated using our novel abuse-deterrent technology platform, DETERx, which provides extended-release delivery, while also providing barriers to common methods of abuse and misuse (e.g., crushing, chewing, heating, and injecting). This technology combines an active opioid ingredient with a fatty acid and waxes to form microspheres that are filled into a capsule. These wax-based microspheres are designed to resist particle size reduction and dose dumping when subjected to physical and chemical manipulation.

 In April 2016, the United States Food and Drug Administration ("FDA") approved our New Drug Application ("NDA") for Xtampza ER. Xtampza ER is indicated for the management of severe and persistent pain that requires an extended treatment period with a daily opioid analgesic and for which alternative treatment options are inadequate. The approved labeling for Xtampza ER includes human abuse potential studies, as well as data supporting the administration of the product as a sprinkle or through feeding tubes. Xtampza ER's label indicates a dosing regimen of one capsule every 12 hours, and it must be taken with food. In June 2016, we commercially launched Xtampza ER in the United States.

 Xtampza ER, OxyContin, and the authorized generic versions of OxyContin (which are identical to the branded versions) are the only extended-release oxycodone products marketed in the United States as of January 2024. Xtampza ER and OxyContin (along with its authorized generics) feature the same active pharmaceutical ingredient (oxycodone) and feature abuse-deterrent technologies – though the abuse deterrent technologies are designed differently. In November 2017, we announced FDA approval of a Supplemental New Drug Application ("sNDA") for Xtampza ER to include comparative oral pharmacokinetic data from a clinical study evaluating the effect of physical manipulation by crushing Xtampza ER compared with OxyContin and a control (oxycodone hydrochloride immediate-release). In the study, Xtampza ER maintained its extended-release pharmacokinetic profile when crushed, while OxyContin showed a rapid release of oxycodone when crushed with common household tools; crushed OxyContin was bioequivalent to crushed oxycodone IR. The sNDA also added results from an oral human abuse potential study and an oral abuse deterrent claim to the label, making Xtampza ER the only single-agent extended-release oxycodone with oral, intranasal, and intravenous abuse-deterrent labeling.

 We are committed to ongoing monitoring and public dissemination of our real-world abuse and diversion data, regardless of the results. The two main sources of real-world abuse, misuse, and diversion data are RADARS and Inflexxion, an IBH Company. The Researched Abuse, Diversion and Addiction-Related Surveillance (RADARS) System collects product-and geographically-specific data on abuse, misuse, and diversion of prescription drugs through its multiple data sources. Abuse, misuse, and diversion of Xtampza ER has remained low compared to commonly abused

 schedule II opioid analgesics for three years after introduction into the U.S. market. Methods to defeat the tamper resistant properties of Xtampza ER are reported but there is no indication of widespread or expanding abuse or misuse in the data streams evaluated. Potential limitations are based upon the fact that the Poison Center and Treatment Center Program cases involve self-reporting which may lead to: (i) differential misidentification among drug groups which may affect observed differences, and (ii) case counts of drug groups comprised primarily of branded products (other abuse-deterrent formulations of ER opioids) may be overestimated when based on self-reporting and drug groups comprised primarily of generic products (non-abuse-deterrent formulations of ER opioids and IR oxycodone) may be underestimated. The RADARS data represents a single snapshot in time and is subject to change. Therefore, we plan to continue monitoring real world data characterizing the rate of abuse, misuse, and diversion of Xtampza.

 Nucynta Products

 The Nucynta Products are extended-release ("ER") and immediate-release ("IR") oral formulations of tapentadol. In November 2008, the FDA approved Nucynta ER and Nucynta IR. Nucynta ER is indicated for the management of severe and persistent pain that requires an extended treatment period with a daily opioid analgesic, including neuropathic pain associated with diabetic peripheral neuropathy in adults, and for which alternate treatment options are inadequate. Nucynta IR is indicated for the management of acute pain severe enough to require an opioid analgesic and for which alternative treatments are inadequate in adults and pediatric patients aged 6 years and older with a body weight of at least 40 kg. In August 2023, the FDA granted New Patient Population exclusivity for Nucynta IR in pediatric patients. This grant extended the period of U.S. exclusivity for Nucynta IR from June 27, 2025 to July 3, 2026.

 We began commercializing the Nucynta Products in 2018 pursuant to a commercialization agreement (the "Nucynta Commercialization Agreement") with Assertio Therapeutics, Inc. (formerly known as Depomed) ("Assertio"), pursuant to which Assertio granted us a sublicense of certain of its intellectual property related to the Nucynta Products for commercialization of such products in the United States. In February 2020, we acquired additional assets related to the Nucynta Products from Assertio and assumed all commercialization responsibilities, including sales and marketing, for the Nucynta Products through the acquisition of a license from Gr nenthal Gmbh (the "Gr nenthal License" and such acquisition, the "Nucynta Acquisition"). Upon closing the Nucynta Acquisition, the Nucynta Commercialization Agreement and our prior royalty obligation to Assertio ceased; our only remaining royalty obligation is to pay royalties directly to Gr nenthal Gmbh based on net sales of the Nucynta Products under the Gr nenthal License.

 Belbuca and Symproic

 On March 22, 2022, we acquired BioDelivery Sciences International, Inc. ("BDSI"), a specialty pharmaceutical company working to deliver innovative therapies for individuals living with serious and debilitating chronic conditions (the "BDSI Acquisition"). Upon closing the BDSI Acquisition, we acquired Belbuca and Symproic.

 Belbuca is a buccal film that contains buprenorphine, a Schedule III opioid, and was approved by the FDA in October 2015 for severe and persistent pain that requires an extended treatment period with a daily opioid analgesic and for which alternative options are inadequate. Symproic was approved by the FDA in March 2017 for the treatment of opioid-induced constipation ("OIC") in adult patients with chronic non-cancer pain, including patients with chronic pain related to prior cancer or its treatment who do not require frequent (e.g., weekly) opioid dosage escalation. We began shipping and recognizing product sales related to Belbuca and Symproic in March 2022.

 Pain, Pain Management, and Opioid Abuse in the United States

 Acute and Chronic Pain

 Pain can be classified along many different variables, including severity, duration and etiology. There are two broad categories of pain based on duration: acute pain, or pain that is self-limited and generally requires treatment for no more than up to a few weeks, and chronic pain, or pain that lasts beyond the healing of an injury or that persists longer than 3 to 6 months. The overall prevalence of chronic pain among adults in the United States is 20.9%, affecting approximately 51.6 million Americans. Additionally, 6.9% of the U.S. adult population, approximately 17.1 million people, suffer from high-impact chronic pain that frequently limits life or work activities.

 A 2011 report from the Institute of Medicine estimated that chronic pain costs the U.S. between $560.0 and $635.0 billion per year in direct medical costs and lost productivity, which does not include the cost of care for institutionalized

 individuals (e.g., nursing home residents, prisoners), military personnel, or children, or the costs associated with caregiving. The estimated annual costs of chronic pain exceed the costs for heart disease, cancer, and diabetes.

 Role of Prescription Opioids in the Treatment of Pain

 Prescription opioids continue to serve as important tools in the treatment of acute and chronic pain where alternative treatments have been inadequate. Prescription opioids are available in immediate-release formulations as well as in long-acting/extended-release formulations, which incorporate a time-release mechanism designed to deliver steady amounts of opioid, typically over 12 to 24 hours. Extended-release opioids are designed to offer more convenient dosing with a longer period of consistent blood levels of the active drug as compared to immediate-release formulations.

 In 2023, there were approximately 139.7 million prescriptions for opioids written in the United States, representing a 3.8% decline from 2022 levels and including approximately 13.6 million prescriptions for long-acting/extended-release opioids, and approximately 126.1 million prescriptions for immediate-release opioids. After marked increases in opioid prescriptions from 2000 to 2015, prescriptions decreased each year since 2015, correlating with rising awareness of the extent and impact of the opioid crisis. However, prescription levels in 2020 returned to levels similar to those seen in the year 2000, when 143.8 million prescriptions for opioids were written in the United States, including 11.4 million prescriptions for extended-release opioids and 132.4 million prescriptions for immediate-release opioids.

 Increasingly, practitioners and regulators are focusing on multidisciplinary, multimodal approaches to pain management, including exercise, physical therapy and psychotherapy, and opioid and non-opioid medications. Recognizing the role that opioid therapy continues to play in effective management of moderate to severe pain in appropriate patients, these groups are advocating for best practices that support appropriate opioid prescribing to help mitigate the risks of abuse, addiction and other adverse events associated with prescription opioids.

 Prescription Opioid Abuse in the United States
 Prescription opioids of all kinds, including both immediate-release and extended-release formulations, are subject to manipulation, diversion, misuse, and abuse. Besides their accepted uses for analgesia, opioids produce a general sense of well-being or euphoria by reducing tension, anxiety, and aggression. These effects contribute to the attractiveness of opioids for abuse and, indeed, the U.S. Centers for Disease Control and Prevention ("CDC") has described abuse of prescription drugs in the United States as a vast and deadly epidemic. The beginning of the opioid overdose epidemic in the late 1990s was marked by a rise in prescription opioid overdose deaths. For a variety of reasons, heroin use began increasing in the mid-2000s, and had surpassed prescription opioids as a cause of opioid-related overdose by 2016. Meanwhile, the predominant opioid cause of death in 2018 involved synthetic opioids other than methadone. While opioid-related overdose deaths declined slightly in 2018 (in contrast to the sharp increases during 2014 to 2017), the number of drug overdose deaths was still four times higher in 2018 than in 1999.

 Despite heightened awareness of the risks associated with opioid use, abuse of prescription opioids, including extended-release formulations, continues to be a public health issue. In 2022, 8.9 million, or 3.2% of people aged 12 and older, reported opioid misuse in the prior year as collected by the National Survey on Drug Use and Health sponsored by the Substance Abuse and Mental Health Services Administration ("SAMHSA"). In 2021, the number of reported deaths involving prescription opioids totaled 16,706, worsening from 2019 levels.

 Extended-release opioids may be especially attractive to people who abuse opioids because, if the extended-release mechanism can be defeated through tampering, many extended-release products quickly deliver a relatively large amount of active pharmaceutical ingredient ("API") (i.e., an effect known as "dose dumping"). By manipulating these products, people who abuse opioids achieve a more intense euphoria as a result of rapid increases in the blood concentration of the API.

 In response to issues surrounding abuse of prescription opioids, pharmaceutical companies have developed novel, abuse-deterrent formulation strategies. Abuse-deterrent formulations, including the DETERx platform that is incorporated in Xtampza ER, target the known or expected routes of abuse, such as crushing in order to snort or dissolving in order to inject, for the specific opioid drug substance. The FDA has encouraged the development of prescription opioids with abuse-deterrent formulations to help combat the opioid crisis, and expanding access to abuse deterrent formulations is part of the FDA's comprehensive Opioids Action Plan. These technologies, however, do not eliminate the possibility of

 misuse and abuse. Moreover, no abuse deterrence technology, including DETERx, is able to deter the most common form of abuse—swallowing a number of intact capsules or tablets to achieve a feeling of euphoria.

 Legislative and Regulatory Actions

 In response to widespread prescription opioid abuse, the U.S. government and a number of state legislatures enacted new legislation and regulations intended to fight the opioid epidemic. At the federal level (in addition to the DEA and FDA efforts discussed elsewhere in this Annual Report on Form 10-K), in 2016 the CDC issued clinical practice prescribing guidelines intended to reduce opioid-related harms by encouraging primary care physicians to limit the amount of morphine milligram equivalents ("MMEs") that they prescribe for chronic pain patients. On November 4, 2022, the CDC released updated guidance on prescribing opioids for pain. The 2022 prescribing guidelines replaced the 2016 guidelines but retained their principles for prescribing opioids for chronic pain. The updated CDC guidelines note that although opioids should not be considered first-line therapy for pain management, this does not mean that patients should be required to sequentially fail nonpharmacologic and nonopioid therapy before proceeding to opioid therapy, but rather the expected benefits specific to the clinical context should be weighed against risks before initiating therapy.

 In addition to CDC, the Department of Health and Human Services ("HHS"), and the Department of Veterans Affairs and the Department of Defense ("VA-DoD") issued clinical practice guidelines in 2017 and updated most recently in 2022 for the evaluation and management of care for patients with chronic pain who are on or being considered for opioid treatment. These guidelines are grounded in patient-centered care and the 2022 update provides algorithms for determining the appropriateness of opioids for chronic pain, determining the initiation of opioids, and maintaining, tapering, discontinuing or switching from full agonist opioid treatment.

 While much, if not most, of the state level efforts have focused primarily on increasing people's access to substance abuse treatment and harm reduction measures, some initiatives more directly impact manufacturers and distributors of prescription opioid products; these laws include requirements that manufacturers fund statewide drug take-back programs or pay opioid-specific taxes or "impact fees" and laws that limit the amount of opioid products that a physician may prescribe. Recent years have also seen a variety of proposed and enacted laws and regulations at the federal, state and local level intended to reduce, or limit increases in, pharmaceutical prices, including prescription drug price disclosure laws. Other jurisdictions may enact similar or novel measures intended to reduce or constrain the growth of pharmaceutical spending or otherwise impose policy measures (either opioid-specific or applicable to the pharmaceutical industry as a whole) that could increase our operating costs associated with compliance.

 Manufacturing of Our Products

 Overview

 Xtampza ER is manufactured using a proprietary process. This process is reproducible, scalable, and cost-efficient, and we believe that the microsphere formulation — and the related manufacturing process — is unique in the extended-release opioid market. To date, we have produced Xtampza ER through a contract manufacturing organization, Patheon, a subsidiary of Thermo Fisher Scientific, pursuant to a third-party supply agreement. Our microsphere production is currently conducted in a dedicated manufacturing suite as we transitioned the microsphere production to the new suite in 2021. Patheon has an established record of manufacturing FDA-approved products in the United States, including products containing controlled substances. We own all of the intellectual property, including know-how and specialized manufacturing equipment, necessary to be able to qualify the manufacturing equipment currently located at Patheon's facility at an alternative location (and with an alternative vendor) if necessary.

 The Nucynta Products are manufactured pursuant to supply agreements with third-party manufacturers. Nucynta ER was historically produced by Janssen at a facility in Puerto Rico pursuant to a supply agreement that we assumed from Assertio in connection with the Nucynta Acquisition. In September 2022, we completed the transfer of the Nucynta ER manufacturing process through a technology transfer program to enable manufacturing of Nucynta ER at Patheon in Cincinnati, Ohio. Nucynta ER is currently manufactured by Patheon. Nucynta IR is manufactured by Halo Pharmaceutical, Inc. in Whippany, New Jersey.

 Belbuca and Symproic are manufactured pursuant to supply agreements with third-party manufacturers. Belbuca laminate (i.e., bulk product) is produced by Adhesives Research in Glen Rock, Pennsylvania. Belbuca laminate is then sent to either LTS Therapy Systems (formerly Tapemark) in St. Paul, Minnesota or Sharp Packaging Solutions in

 Allentown, Pennsylvania where it is converted into individual dosage units and, ultimately, into finished goods. For the Belbuca product portfolio, we are currently qualifying alternate bulk and secondary packaging operations at our existing manufacturer's sites. Symproic is manufactured by UPM Pharmaceuticals in Bristol, Tennessee and packaged by Sharp Packaging Solutions in Allentown, Pennsylvania.

 Drug Substances

 The API used to formulate the products in our portfolio and DEA drug scheduling are as follows:

 Product

 API

 DEA Drug Schedule

 Xtampza ER

 Oxycodone

 Schedule II

 Nucynta IR

 Tapentadol

 Schedule II

 Nucynta ER

 Tapentadol

 Schedule II

 Buprenorphine

 Schedule III

 Naldemedine

 Not a controlled substance

 Oxycodone, tapentadol, and buprenorphine are classified as narcotic controlled substances under U.S. federal law. Xtampza ER and the Nucynta Products are classified by the DEA as Schedule II controlled substances, meaning these products have a high potential for abuse and dependence but are recognized as having an accepted medical use. Belbuca is classified as a Schedule III controlled substance, meaning it has a moderate to low potential for abuse. Due to the controlled substances classification, the manufacturing, shipping, dispensing and storing of these products are subject to a high degree of regulation, as described in more detail under the caption "— Government Regulation — DEA and Opioid Regulation."

 We currently procure the API used in our products from a sole supplier or limited number of suppliers.

 Marketing and Commercialization

 We commercialize our products in the United States with a dedicated field sales force, consisting of approximately 110 sales representatives and managers, to call on the approximately 10,000 health care professionals who write approximately 66% of the branded extended-release opioid prescriptions in the United States, with a primary focus on pain specialists. We also employ a market-access team to support our formulary approval and payor contracting.

 Our marketing strategy focuses on increasing awareness of the differentiated features of our products. As an integral part of educating clinicians regarding the properties and differentiated profiles of our products, our sales force is trained to share information relating to significant risks associated with prescription opioids, including risks relating to addiction, abuse, and misuse.

 We primarily sell our products to wholesalers that, in turn, distribute our products to retail outlets (such as drug store and supermarket chains and independent pharmacies), managed health care organizations and government agencies. Customers in the managed health care market include health maintenance organizations, nursing homes, hospitals, clinics, pharmacy benefit management companies and mail order customers.

 Intellectual Property

 The protection of patents, designs, trademarks and other proprietary rights that we own or license is critical to our success and competitive position. Xtampza ER is protected by twelve issued patents in the United States (which cover both the abuse-deterrent technology and methods of using it to treat patients), one granted and two pending applications in the European Patent Office, two issued patents in Canada, and one issued patent in each of Japan and Australia. Finally, we have six patent applications pending in the United States, one pending patent application in each of Canada and Japan, and one pending Patent Cooperation Treaty ("PCT") application. Our issued U.S. patents are projected to expire in 2025, 2030, and 2036 and our pending patent applications in the United States, if issued, would be projected to expire in 2030 and 2036. In addition, we use a unique and proprietary process to manufacture our products that requires significant know how, which we currently protect as trade secrets.

 Nucynta IR is protected by one issued patent in the United States (which covers both the drug substance and drug product) that is projected to expire in 2025. Nucynta IR is also covered by New Patient Population exclusivity in

 pediatric patients that is projected to expire in 2026. Nucynta ER is protected by four issued patents in the United States (which cover the drug substance, drug product, certain characteristics of the dosage form, and methods of treating patients) that are projected to expire in 2024, 2025, and 2028. Belbuca is protected by three issued patents in the United States (which cover a method of treating patients) that are projected to expire in 2027 and 2032.

 We have concluded that some of our technology is best protected as proprietary know-how, rather than through obtaining patents. Except for licenses from Gr nenthal GmbH to commercialize the Nucynta Products in the United States and its territories, and a license from Shionogi to commercialize Symproic in the United States and its territories, our technology and products are not in-licensed from any third party, and we own all of the rights to Xtampza ER. We believe we have freedom to operate in the United States and other countries, but there can be no assurance that other companies, known and unknown, will not attempt to assert their intellectual property against us.

 We also rely on trademarks and trade designs to develop and maintain our competitive position. We have received trademark registration for Collegium Pharmaceutical, Inc., DETERx, and Xtampza ER in the United States, and acquired trademarks associated with the Nucynta Products in connection with the Nucynta Acquisition and Belbuca and Symproic in connection with the BDSI Acquisition.

 Our business depends upon the skills, knowledge and experience of our scientific and technical personnel, as well as that of our advisors, consultants and other contractors. To help protect our proprietary know-how that is not patentable, we rely on trade secret protection and confidentiality agreements to protect our interests. To this end, we generally require our employees, consultants and advisors to enter into confidentiality agreements prohibiting the disclosure of confidential information and, in some cases, requiring disclosure and assignment to us of the ideas, developments, discoveries and inventions important to our business. Additionally, these confidentiality agreements require that our employees, consultants and advisors do not bring to us, or use without proper authorization, any third party's proprietary technology.

 Competition

 Our industry is characterized by rapidly advancing technologies, intense competition, and a strong emphasis on proprietary products. We face competition and potential competition from several sources, including pharmaceutical and biotechnology companies, generic and branded drug companies, drug delivery companies and academic and research institutions. However, our primary source of competition stems from the generic opioid market, including both long-acting/extended-release and immediate-release opioid drugs. Most of the existing and potential competitors have significantly more financial and other resources than we do. We believe the key competitive factors that will affect the commercial success of our products include the therapeutic efficacy, convenience of dosing and distribution and, in the case of Xtampza ER, the degree of abuse deterrence of competing products, as well as their safety, cost and tolerability profiles.

 Government Regulation

 FDA Approval Process

 In the United States, pharmaceutical products are subject to extensive regulation by the FDA. The Federal Food, Drug, and Cosmetic Act and other federal and state statutes and regulations govern the research, development, testing, manufacture, storage, recordkeeping, approval, labeling, promotion and marketing, distribution, post-approval monitoring and reporting, sampling, and import and export of pharmaceutical products. Failure to comply with applicable U.S. requirements may subject a company to a variety of administrative or judicial sanctions, such as warning or untitled letters, product recalls, product seizures, total or partial suspension of production or distribution, withdrawal of the product from the market, injunctions, fines, civil penalties, and criminal prosecution. Failure to meet FDA requirements for approval would also result in a medication not being approved for marketing.

 The process of developing a pharmaceutical product and obtaining FDA approval to market the medication in the United States typically involves:

 completion of preclinical laboratory and animal testing and formulation studies in compliance with the FDA's good laboratory practices ("GLP") and regulations;

 submission to the FDA of an Investigational New Drug ("IND") application for human clinical testing, which becomes effective 30 days after submission and, if not placed on clinical hold, before human clinical trials may begin in the United States;

 approval by an independent institutional review board, at each clinical trial site before each trial may be initiated;

 performance of adequate and well-controlled human clinical trials in accordance with current good clinical practices ("GCP") and FDA regulations to establish the safety and effectiveness of the proposed drug product for each indication for which FDA approval is sought;

 satisfactory completion of an FDA pre-approval inspection of the facility or facilities at which the product is manufactured to assess compliance with the FDA's current good manufacturing practices ("cGMP") and regulations;

 submission to the FDA of a NDA or, in the case of a generic drug, an abbreviated NDA ("ANDA");

 satisfactory completion of a review by an FDA advisory committee, if convened; and

 FDA review and approval of the NDA or ANDA.

 Satisfaction of FDA pre-market approval requirements typically takes many years and the actual time required may vary substantially based upon the application type, complexity, and novelty of the product or disease.

 Preclinical tests include laboratory evaluation of product chemistry, formulation, stability and toxicity, as well as animal studies to assess the characteristics and potential safety and efficacy of the product candidate. The conduct of the preclinical tests must comply with federal regulations and requirements, including GLPs. The results of preclinical testing are submitted to the FDA as part of an IND application along with other information, including information about product chemistry, manufacturing and controls, and a proposed clinical trial protocol. Long-term preclinical tests, such as animal tests of reproductive toxicity and carcinogenicity, may continue after the IND application is submitted.

 Clinical trials involve the administration of the investigational new drug to healthy volunteers or subjects under the supervision of a qualified investigator. Clinical trials must be conducted: (i) in compliance with federal regulations and GCP, an international standard for the design, conduct, performance, monitoring, auditing, recording, analyses, and reporting of clinical trials that provides assurance that the data and reported results are credible and accurate, and that the rights, integrity, and confidentiality of trial subjects are protected; and (ii) under protocols detailing, among other things, the objectives of the trial, the parameters to be used in monitoring safety, and any effectiveness criteria to be evaluated.

 Clinical trials to support NDAs for marketing approval are typically conducted in three sequential phases, but the phases may overlap or be combined.

 Phase 1: This phase includes the initial introduction of an investigational new drug into patients or healthy volunteer subjects. These studies are typically closely monitored and designed to determine the metabolism and pharmacological actions of the drug in humans, the side effects associated with increasing doses, and, in some cases, early evidence of effectiveness.

 Phase 2: This phase includes well-controlled, closely monitored studies conducted in a relatively small number of patients (typically no more than several hundred patients) to assess effectiveness of the drug for particular indication(s) in patients with the diseases or condition under study as well as to determine the common short-term side effects and risks associated with the drug.

 Phase 3: This phase includes expanded controlled and uncontrolled trials which are performed after preliminary evidence suggesting effectiveness of the drug has been obtained. These studies typically include several hundred to several thousand patients and are conducted to gather additional information about the effectiveness and safety of the drug in order to evaluate the overall risk-benefit relationship and provide an adequate basis for labeling.

 For opioid products designed to deter abuse, FDA guidance regarding studies and clinical trials dictates what types of studies should be conducted to demonstrate abuse-deterrence, how those studies and clinical trials will be evaluated, and what product labeling claims may be approved based on the results of those studies and clinical trials. There are four categories of abuse-deterrence studies and clinical trials: Categories 1, 2 and 3 consist of pre-marketing studies and clinical trials designed to evaluate a product candidate's abuse potential under controlled conditions, while Category 4 studies analyze post-market data to assess the impact of abuse-deterrent properties on actual abuse. The final guidance also provides examples of product label claims that may be made based on the results of the corresponding studies and clinical trials.

 After completion of the required clinical testing, an NDA is prepared and submitted to the FDA. The FDA conducts a preliminary review of all NDAs within the first 60 days after submission before accepting them for filing. Pursuant to agreements reached during reauthorization of the Prescription Drug User Fee Act ("PDUFA"), the FDA has a goal of acting on most original NDAs within six months or ten months of the application submission or filing date, depending on the nature of the drug and application type. The FDA has a number of programs intended to help expedite testing, review, and approval of drug candidates that meet certain eligibility criteria. The FDA may refer applications for novel drug products, or drug products that present difficult questions of safety or effectiveness, to an advisory committee — typically a panel that includes clinicians and other experts — for review, evaluation, and a recommendation as to whether the application should be approved and under what conditions. The FDA is not bound by the recommendation of an advisory committee, but it generally follows such recommendations.

 If the FDA's evaluations of the NDA and of the sponsor's manufacturing facilities are favorable, the FDA will issue an approval letter, and the sponsor may begin marketing the drug for the approved indications, subject to any post-approval requirements, described further below. If the FDA determines it cannot approve the NDA in its current form, it will issue a complete response letter indicating that the application will not be approved in its current form. The complete response letter usually describes the specific deficiencies that the FDA identified in the application and may require additional clinical or other data or impose other conditions that must be met in order to obtain approval of the NDA. After receiving a complete response letter, the applicant may resubmit the application addressing all deficiencies in the letter or withdraw the application. Addressing the deficiencies noted by the FDA can be costly and can result in significant delays prior to approval. Moreover, even if the applicant believes it has addressed the deficiencies, it is possible that approval may not ultimately be obtained.

 Where a sponsor wishes to expand the originally approved prescribing information, such as by adding a new indication, it must submit and obtain approval of a sNDA. Changes to an indication generally require additional clinical studies, which can be time-consuming and require the expenditure of substantial additional resources. Under PDUFA, the target timeframe for the review of a sNDA to add a new clinical indication is six or ten months from the receipt date, depending on whether or not the sNDA has priority review. As with an NDA, if the FDA determines that it cannot approve a sNDA in its current form, it will issue a complete response letter as discussed above.

 REMS

 The FDA has the authority to require a Risk Evaluation and Mitigation Strategy ("REMS"), either as a condition of the approval of an NDA or after approval. A REMS is a program to manage known or potential serious risks associated with a drug product and may be required by the FDA to ensure that the benefits of a drug outweigh its risks. If the FDA determines a REMS is necessary for a new drug, the drug sponsor must submit a proposed REMS plan as part of its NDA prior to approval. The FDA may also impose a REMS requirement on a drug already on the market if the FDA determines, based on new safety information, that a REMS is necessary to ensure that the drug's benefits continue to outweigh its risks. A REMS can include medication guides, communication plans for healthcare professionals, and Elements To Assure Safe Use ("ETASU"). In addition, the REMS must include a timetable for periodically assessing the strategy, at a minimum, at 18 months, three years, and seven years after the REMS approval. The requirement for a REMS can materially affect the potential market and profitability of a drug.

 In July 2012, the FDA approved a class-wide REMS for extended-release and long-acting opioid products (Opioid Analgesic REMS). Extended-release formulations of oxycodone, morphine, hydrocodone and hydromorphone, for example, are required to have a REMS. The goal of the Opioid Analgesic REMS is to educate prescribers and other healthcare providers (including pharmacists and nurses) on the treatment and monitoring of patients with pain. Manufacturers subject to this class-wide REMS must work together to implement the REMS as part of the Opioid Analgesic REMS Program Companies ("RPC"), which is a collaboration of drug product companies to implement a single shared REMS to reduce the burden on the healthcare system accessed from the RPC REMs website. The content on this website is determined by, hosted on behalf of, and is financially supported by the RPC. The central component of the extended-release/long-acting opioid REMS program is an education program for healthcare providers who prescribe, and healthcare providers involved in the treatment and monitoring of patients who receive opioid analgesics. Specifically, the REMS includes a product-specific Medication Guide and the Patient Counseling Guide available for distribution to patients who are dispensed the drug, as well as a number of ETASU. These ETASU include REMS-compliant accredited continuing education for healthcare providers, which includes all healthcare providers who prescribe or are involved in the management of patients with pain; information provided to prescribers that they can use

 to educate patients in the safe use, storage, and disposal of opioids; and information provided to prescribers about the existence of the REMS and the strong recommendation that they complete the available training. Prescriber training required to be offered as part of the REMS is conducted by accredited, independent continuing education providers, without cost to healthcare professionals, under unrestricted grants funded by the opioid analgesic manufacturers. Moreover, REMS assessments must be submitted on an annual basis to assess the extent to which the ETASU are meeting the goals of the REMS and whether the goals or elements should be modified.

 In September 2018, and pursuant to its Opioids Action Plan, the FDA approved the final class-wide REMS, which includes several measures to facilitate communication of the risks associated with opioid pain medications to patients and health care professionals. For the first time, FDA notified companies that have NDAs or ANDAs for certain opioid analgesic drug products ("NDA/ANDA holders") of the elements required for a single REMS for opioid analgesic products, whether branded or generic. The REMS requires that training be made available to health care providers who are involved in the management of patients with pain (including nurses and pharmacists) and requires that the education cover broad information about appropriate pain management, including alternatives to opioids for the treatment of pain. In connection with the 2018 REMS, the FDA also approved new product labeling containing information about the health care provider education available through the 2018 REMS.

 Advertising and Promotion

 The FDA and other federal regulatory agencies closely regulate the marketing and promotion of drugs through, among other things, guidance and regulations for direct-to-consumer advertising, communications regarding unapproved uses, industry-sponsored scientific and educational activities, and promotional activities involving the internet. A product cannot be commercially promoted before it is approved. After approval, product promotion can include only those claims relating to safety and efficacy that are consistent with the labeling approved by the FDA. Healthcare providers are permitted to prescribe drugs for "off-label" uses — that is, uses not approved by the FDA and therefore not described in the drug's labeling — because the FDA does not regulate the practice of medicine. However, FDA regulations impose stringent restrictions on manufacturers' communications regarding off-label uses. Failure to comply with applicable FDA requirements and restrictions in this area may subject a company to adverse publicity and enforcement action by the FDA, the U.S. Department of Justice, or the Office of the Inspector General of HHS, as well as state authorities. This could subject a company to a range of penalties that could have a significant commercial impact, including civil and criminal fines and agreements that materially restrict the manner in which a company promotes or distributes drug products.

 Post-Approval Requirements

 Once an NDA is approved, a product will be subject to pervasive and continuing regulation by the FDA, including, among other things, requirements relating to drug listing and registration, recordkeeping, periodic reporting, product sampling and distribution, adverse event reporting and advertising, marketing and promotion restrictions. In addition, the Drug Supply Chain Security Act ("DSCSA"), was enacted in 2013 with the aim of building an electronic system to identify and trace certain prescription drugs and biologics distributed in the United States. The DSCSA mandates phased-in and resource-intensive obligations for pharmaceutical manufacturers, wholesale distributors, and dispensers that culminated in November 2023. The FDA has issued two compliance policy guidances that establish a one-year stabilization period from November 2023 to November 2024 for trading partners to continue to build and validate interoperable systems and processes to meet certain requirements of the DSCSA. The law's requirements include the quarantine and prompt investigation of a suspicious product, to determine if it is illegitimate, notifying trading partners and the FDA of any illegitimate product, and compliance with product tracking and tracing requirements.

 Adverse event reporting and submission of periodic reports is required following FDA approval of an NDA. The FDA also may require, in addition to REMS discussed above, post-market testing, known as Phase 4 testing, and surveillance to monitor the effects of an approved product, or the FDA may place conditions on an approval that could restrict the distribution or use of the product. In addition, quality control, drug manufacture, packaging, and labeling procedures must continue to conform to cGMPs after approval. Drug manufacturers and certain of their subcontractors are required to register their establishments with the FDA and certain state agencies. Registration subjects entities to periodic announced or unannounced inspections by the FDA or these state agencies, during which the agency inspects manufacturing facilities to assess compliance with cGMPs. Regulatory authorities may withdraw product approvals, request product recalls, or take other punitive action if a company fails to comply with regulatory standards, if it encounters problems following initial marketing, or if previously unrecognized problems are subsequently discovered.

 The FDA may require post-approval studies, including post-marketing surveillance and observational studies and clinical trials, if the FDA finds that scientific data, including information regarding related drugs, warrant them. The purpose of such studies would be to collect additional information to assess a known serious risk or signals of serious risk related to the drug or to monitor for or identify an unexpected serious risk when available data indicate the potential for such a risk. The FDA may also require a labeling change if it becomes aware of new safety information that it believes should be included in the labeling of a drug. Discovery of previously unknown problems with a drug or the failure to comply with applicable FDA requirements can have negative consequences, including adverse publicity, judicial or administrative enforcement, untitled or warning letters from the FDA, mandated corrective advertising or communications with doctors, and civil or criminal penalties, among others.

 The FDA held a meeting of the Anesthetic and Analgesic Drug Products Advisory Committee on April 19, 2023. The committee discussed post-marketing requirements ("PMRs") 3033-11, issued to holders of NDAs for extended-release and long-acting opioid analgesics to evaluate long-term efficacy of opioid analgesics and the risk of opioid-induced hyperalgesia. The discussion focused on a clinical trial designed to address these objectives. We participated in this meeting and as a result, the proposed design of study 3033-11, the enriched enrollment randomized withdrawal design was not supported. As part of the Opioid PMR Consortium, Collegium is working with the FDA to redesign study 3033-11.

 The Hatch-Waxman Amendments

 Orange Book Listing

 In seeking approval for a drug through an NDA, applicants are required to list with the FDA each patent with claims that cover the applicant's product. Upon approval of a drug, each of the patents listed in the application for the drug is then published in the FDA's Approved Drug Products with Therapeutic Equivalence Evaluations, commonly known as the Orange Book. Drugs listed in the Orange Book can, in turn, be cited by potential generic competitors as referenced listed drugs ("RLDs") in support of approval of an ANDA. An ANDA provides for marketing of a drug product that has the same active pharmaceutical ingredient in the same strengths and dosage form as the RLD and has been shown through bioequivalence testing to be therapeutically equivalent to the RLD. Other than the requirement for bioequivalence testing, ANDA applicants are not required to conduct, or submit results of, preclinical or clinical tests to prove the safety or efficacy of their drug product. Drugs approved in this way are commonly referred to as "generic equivalents" to the listed drug and can often be substituted by pharmacists under prescriptions written for the original listed drug.

 The ANDA applicant is required to make certain certifications to the FDA concerning any patents listed for the approved product in the FDA's Orange Book. Specifically, the applicant must certify that: (i) the required patent information has not been filed; (ii) the listed patent has expired; (iii) the listed patent has not expired, but will expire on a particular date and approval is sought after patent expiration; or (iv) the listed patent is invalid or will not be infringed by the new product. The ANDA applicant may also elect to submit a section viii statement certifying that its proposed ANDA label does not contain (or carves out) any language regarding the patented method-of-use rather than make certifications concerning a listed method-of-use patent. If the applicant does not challenge the listed patents, the ANDA application will not be approved until all the listed patents claiming the referenced product have expired.

 A certification that the new product will not infringe the already approved product's listed patents, or that such patents are invalid, is called a Paragraph IV certification. If the ANDA applicant has provided a Paragraph IV certification to the FDA, the applicant must also send notice of the Paragraph IV certification to the NDA and patent holders once the ANDA has been accepted for filing by the FDA. The NDA and patent holders may then initiate a patent infringement lawsuit in response to the notice of the Paragraph IV certification. The filing of a patent infringement lawsuit within 45 days of the receipt of a Paragraph IV certification automatically prevents the FDA from approving the ANDA until the earlier of 30 months, expiration of the patent, settlement of the lawsuit, or a decision in the infringement case that is favorable to the ANDA applicant.
 Exclusivity

 Upon approval of an NDA for a new chemical entity ("NCE"), which is a drug that contains no active moiety that has been approved by the FDA in any other NDA, that drug receives five years of marketing exclusivity during which time the FDA cannot receive any ANDA seeking approval of a generic version of that drug or any Section 505(b)(2) NDA,

 discussed in more detail below, that relies on the FDA's findings of safety and effectiveness regarding the NCE drug. A sponsor may obtain a three-year period of exclusivity for a change to an approved drug, such as the addition of a new indication to the labeling or a new formulation, if the supplement includes reports of new clinical trials (other than bioavailability clinical trials) essential to the approval of the supplement.

 An ANDA may be submitted one year before NCE exclusivity expires if a Paragraph IV certification is filed. If there is no listed patent in the Orange Book, there may not be a Paragraph IV certification, and, thus, no ANDA may be filed before the expiration of the exclusivity period. No ANDA application will receive final approval before any applicable non-patent exclusivity listed in the Orange Book for the referenced product has expired.

 Section 505(b)(2) NDAs

 A Section 505(b)(2) NDA is a special type of NDA often used by applicants seeking approval for new or improved formulations or new uses of previously approved active moieties. Under Section 505(b)(2) of the Federal Food, Drug, and Cosmetic Act, in lieu of developing all of the information normally required for approval of an NDA, an applicant may rely, in part, on data developed by another party and for which the applicant has not obtained a right of reference. Most commonly, 505(b)(2) applicants rely on the FDA's findings of safety and effectiveness in a prior approval of a similar product (although they may also rely on information in published literature). A 505(b)(2) application that references a prior approval may seek approval for some or all of the referenced product's labeled indications and/or for a different indication not included in the referenced product's label.

 To the extent that the Section 505(b)(2) applicant is relying on the FDA's findings of safety and effectiveness for an already approved product, the applicant is required to certify to the FDA concerning any patents listed for the approved product in the Orange Book to the same extent that an ANDA applicant would. Thus, approval of a Section 505(b)(2) NDA can be stalled until all the listed patents claiming the referenced product have expired; until any non-patent exclusivity listed in the Orange Book for the referenced product has expired; and, in the case of a Paragraph IV certification and subsequent patent infringement suit, until the earlier of 30 months, settlement of the lawsuit or a decision in the infringement case that is favorable to the Section 505(b)(2) applicant. In the interim period, the FDA may grant tentative approval. Tentative approval indicates that the FDA has determined that the applicant meets the standards for approval as of the date that the tentative approval is granted. Final regulatory approval can only be granted if the FDA is assured that there is no new information that would affect final regulatory approval. As with traditional NDAs, a Section 505(b)(2) NDA may be eligible for three-year marketing exclusivity, assuming the NDA includes reports of new clinical trials (other than bioavailability clinical trials) essential to the approval of the NDA. For further detail regarding our litigation with Purdue regarding our Section 505(b)(2) NDA for Xtampza ER, refer to "Item 3. Legal Proceedings".

 DEA and Opioid Regulation

 Several of our products are regulated as "controlled substances" as defined in the Controlled Substances Act ("CSA"), which establishes registration, security, recordkeeping, reporting, storage, distribution, importation, exportation, and other requirements administered by the DEA.

 The DEA regulates controlled substances as Schedule I, II, III, IV or V substances. Schedule I substances have no established medicinal use and may not be marketed or sold in the United States. A pharmaceutical product may be listed as Schedule II, III, IV or V, with Schedule II substances considered to present the highest risk of abuse and Schedule V substances the lowest relative risk of abuse among such substances.

 Xtampza ER and the Nucynta Products are listed by the DEA as Schedule II controlled substances under the CSA, while Belbuca is listed as a Schedule III controlled substance. Consequently, the manufacturing, shipping, storing, selling and use of these products is subject to a high degree of regulation. Also, distribution and dispensing of these drugs are highly regulated. Schedule II drugs are subject to the strictest requirements for registration, security, recordkeeping, and reporting. Further, all Schedule II drug prescriptions must be signed by a physician, presented to a pharmacist, and may not be refilled without a new prescription.

 Annual DEA registration is required for any facility that manufactures, distributes, dispenses, imports, or exports any controlled substance. The registration is specific to the particular location, activity, and controlled substance schedule. For example, separate registrations are needed for import and manufacturing, and each registration will specify which schedules of controlled substances are authorized.

 In addition, a DEA quota system controls and limits the availability and production of controlled substances in Schedule I or II. Annually, the DEA establishes an aggregate quota for how much active opioid ingredients, such as oxycodone and tapentadol, may be produced in total in the United States based on the DEA's estimate of the quantity needed to meet legitimate scientific and medicinal needs. The limited aggregate amount of opioids that the DEA allows to be produced in the United States each year is allocated among individual companies, who must submit applications quarterly to the DEA for individual production and procurement quotas. Xtampza ER and the Nucynta Products are regulated as Schedule II controlled substances, and thus, are subject to the DEA's production and procurement quota system. Our contract manufacturers must receive a quarterly quota from the DEA to produce or procure any Schedule I or Schedule II substance, including oxycodone base for use in manufacturing Xtampza ER and tapentadol for use in manufacturing the Nucynta Products. The DEA may adjust aggregate production quotas and individual production and procurement quotas from time to time during the year, although the DEA has substantial discretion in whether or not to make such adjustments.

 Distributions of any Schedule I or II controlled substance must also be accompanied by special order forms, with copies provided to the DEA.

 The DEA also requires drug manufacturers to design and implement a system that identifies suspicious orders of controlled substances, such as those of unusual size, those that deviate substantially from a normal pattern and those of unusual frequency, prior to completion of the sale. A compliant suspicious order monitoring system includes well-defined due diligence, "know your customer" efforts and order monitoring.

 To enforce these requirements, the DEA conducts periodic inspections of registered establishments that handle controlled substances. Failure to maintain compliance with applicable requirements, particularly as manifested in loss or diversion, can result in administrative, civil, or criminal enforcement action that could have a material adverse effect on our business, results of operations and financial condition. The DEA may seek civil penalties, refuse to renew necessary registrations, or initiate administrative proceedings to revoke those registrations. In certain circumstances, violations could result in criminal proceedings.

 Individual states also independently regulate controlled substances. We and our contract manufacturers are subject to state regulation on the distribution of these products.

 Federal laws have been enacted to address the national epidemics of prescription opioid abuse and illicit opioid use. In 2016, the Comprehensive Addiction and Recovery Act ("CARA"), was enacted to address the national epidemics of prescription opioid abuse and heroin use. CARA expands the availability of naloxone for law enforcement and other first responders, forms an interagency task force to develop best practices for pain management with opioid medications and provides resources to improve state monitoring of opioids. The Substance Use-Disorder Prevention that Promotes Opioid Recovery and Treatment for Patients and Communities Act ("SUPPORT Act"), which was signed into law in November 2018, includes a number of measures directed towards regulation and improvement of treatment for substance use-disorder and increased coverage by the Centers for Medicare and Medicaid Services ("CMS") of medically-assisted treatment options. In addition, the SUPPORT Act requires HHS to report to Congress on existing barriers to access to abuse-deterrent opioid formulations by Medicare Part C and D beneficiaries.

 Healthcare Fraud and Abuse Laws and Compliance Requirements

 We are subject to federal, state and local laws targeting fraud and abuse in the healthcare industry, violations of which can lead to civil and criminal penalties, including fines, imprisonment and exclusion from participation in federal healthcare programs. These laws are potentially applicable to us as both a manufacturer and a supplier of products and they also apply to hospitals, physicians and other potential purchasers of our products. The applicable federal fraud and abuse laws apply to products or services reimbursed by federal healthcare programs. Some states, however, have applicable fraud and abuse laws that apply more broadly to include products or services reimbursed by private payors.

 The federal Anti-Kickback Statute ("AKS") (42 U.S.C. § 1320a-7b(b)) prohibits knowingly and willfully soliciting, receiving, offering or providing remuneration, directly or indirectly, to induce either the referral of an individual, or the furnishing, recommending, or arranging for a good or service, for which payment may be made under a federal healthcare program such as the Medicare and Medicaid programs. Remuneration is not defined in the federal Anti-Kickback Statute and has been broadly interpreted to include anything of value, including for example, gifts, discounts,

 coupons, 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. Under the federal Anti-Kickback Statute and the applicable criminal healthcare fraud statutes contained within 42 U.S.C. § 1320a-7b, a person or entity need not have actual knowledge of this statute or specific intent to violate it in order to have committed a violation. In addition, the government may assert that a claim including items or services resulting from a violation of 42 U.S.C. § 1320a-7b, constitutes a false or fraudulent claim for purposes of the civil False Claims Act (discussed below) or the civil monetary penalties statute, which imposes fines against any person who is determined to have presented or caused to be presented claims to a federal healthcare program that the person knows or should know is for an item or service that was not provided as claimed or is false or fraudulent. The federal Anti-Kickback Statute and implementing regulations provide for certain exceptions for "safe harbors" for certain discounting, rebating or personal services arrangements, among other things. However, the lack of uniform court interpretation of the Anti-Kickback Statute makes compliance with the law difficult. Violations of the federal Anti-Kickback Statute can result in significant criminal fines, exclusion from participation in Medicare and Medicaid and follow-on civil litigation, among other things, for both entities and individuals.

 Other federal healthcare fraud-related laws also provide criminal liability for violations. The Criminal Healthcare Fraud statute, 18 U.S.C. § 1347 prohibits knowingly and willfully executing a scheme to defraud any healthcare benefit program, including private third-party payors. Federal criminal law at 18 U.S.C. § 1001, among other sections, 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.

 The civil False Claims Act and similar state laws impose liability on any person or entity who, among other things, knowingly presents, or causes to be presented, a false or fraudulent claim for payment by a federal healthcare program. The qui tam provisions of the False Claims Act and similar state laws allow a private individual to bring civil actions on behalf of the federal or state government and to share in any monetary recovery. The Federal Physician Payments Sunshine Act and similar state laws impose reporting requirements for various types of payments to physicians, other licensed healthcare practitioners and teaching hospitals. Failure to comply with required reporting requirements under these laws could subject manufacturers and others to substantial civil monetary penalties. In addition, government entities and private litigants have asserted claims under state consumer protection statutes against pharmaceutical and medical device companies for alleged false or misleading statements in connection with the marketing, promotion and/or sale of pharmaceutical and medical device products, including state investigations and litigation by certain government entities regarding our marketing of opioid products.

 The federal Health Insurance Portability and Accountability Act of 1996 ("HIPAA") created additional federal criminal statutes that prohibit knowingly and willfully executing, or attempting to execute, a scheme to defraud any healthcare benefit program or obtain, by means of false or fraudulent pretenses, representations, or promises, any of the money or property owned by, or under the custody or control of, any healthcare benefit program, regardless of the payor (e.g., public or private) and knowingly and willfully falsifying, concealing or covering up by any trick or device a material fact or making any materially false statements in connection with the delivery of, or payment for, healthcare benefits, items or services relating to healthcare matters. Like the AKS, the Patient Protection and Affordable Care Act (the "ACA") amended the intent standard for certain healthcare fraud statutes under HIPAA such that a person or entity no longer needs to have actual knowledge of the statute or specific intent to violate it in order to have committed a violation.

 HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act of 2009 ("HITECH") and their respective implementing regulations, also impose requirements on certain covered healthcare providers, health plans, and healthcare clearinghouses as well as their respective business associates that perform services for them that involve the creation, use, receipt, maintenance or disclosure of individually identifiable health information, relating to the privacy, security and transmission of individually identifiable health information. HITECH also created four new tiers of civil monetary penalties, amended HIPAA to make civil and criminal penalties directly applicable to business associates, and gave state attorneys general new authority to file civil actions for damages or injunctions in federal courts to enforce HIPAA and seek attorneys' fees and costs associated with pursuing federal civil actions.

 The federal Physician Payments Sunshine Act, created under the ACA, and its implementing regulations, requires manufacturers of drugs, devices, biologics and medical supplies for which payment is available under Medicare, Medicaid or the Children's Health Insurance Program to report annually to the CMS under the Open Payments Program, information related to payments or other transfers of value made to physicians (defined to include doctors, dentists, optometrists, podiatrists and chiropractors), to certain non-physician providers such as physician assistants and nurse

 practitioners, and to teaching hospitals, as well as ownership and investment interests held by physicians and their immediate family members.

 Federal price reporting laws require manufacturers to calculate and report complex pricing metrics to government programs, where such reported prices may be used in the calculation of reimbursement and/or discounts on approved products. In addition, federal consumer protection and unfair competition laws broadly regulate marketplace activities and activities that potentially harm consumers. There are also analogous state and foreign laws and regulations, such as state and foreign anti-kickback, false claims, consumer protection and unfair competition laws which may apply to pharmaceutical business practices, including but not limited to, research, distribution, sales and marketing arrangements as well as submitting claims involving healthcare items or services reimbursed by any third-party payor, including commercial insurers; state laws that require pharmaceutical companies to comply with the pharmaceutical industry's voluntary compliance guidelines and the relevant compliance guidance promulgated by the federal government that otherwise restricts payments that may be made to healthcare providers and other potential referral sources; state laws that require drug manufacturers to file reports with states regarding pricing and marketing information, such as the tracking and reporting of gifts, compensation and other remuneration and items of value provided to healthcare professionals and entities; state and local laws requiring the registration of pharmaceutical sales representatives; and state and foreign laws governing the privacy and security of health information in certain circumstances, many of which differ from each other in significant ways and may not have the same effect, thus complicating compliance efforts.

 Because of the breadth of these laws and the narrowness of the statutory exceptions and regulatory safe harbors available, it is possible that some of a pharmaceutical manufacturer's business activities could be subject to challenge under one or more of such laws. Efforts to ensure that business arrangements comply with applicable healthcare laws involve substantial costs. It is possible that governmental and enforcement authorities will conclude that a pharmaceutical manufacturer's business practices do not comply with current or future statutes, regulations or case law interpreting applicable fraud and abuse or other healthcare laws and regulations. If any such actions are instituted against a pharmaceutical manufacturer, and it is not successful in defending itself or asserting its rights, those actions could have a significant impact on its business, including the imposition of significant civil, criminal and administrative penalties, damages, disgorgement, imprisonment, monetary fines, possible exclusion from participation in Medicare, Medicaid and other federal healthcare programs, reporting obligations and oversight if we become subject to integrity and oversight agreements to resolve allegations of non-compliance, contractual damages, reputational harm, diminished profits and future earnings, and curtailment of operations, any of which could adversely affect a pharmaceutical manufacturer's ability to operate its business and the results of operations. In addition, commercialization of any drug product outside the U.S. will also likely be subject to foreign equivalents of the healthcare laws mentioned above, among other foreign laws.

 Third-Party Payor Coverage and Reimbursement

 The commercial success of our products will depend, in part, upon the availability of coverage and adequate reimbursement from third-party payors at the federal, state and private levels. Third-party payors include governmental programs such as Medicare or Medicaid, private insurance plans and managed care plans. These third-party payors may deny coverage or reimbursement for a product or therapy in whole or in part if they determine that the product or therapy was not medically appropriate or necessary. Also, third-party payors have attempted to control costs by limiting coverage through the use of formularies and other cost-containment mechanisms and the amount of reimbursement for particular procedures or drug treatments. In addition, some third-party payors also require preapproval of coverage for new or innovative devices or drug therapies before they will reimburse healthcare providers who prescribe such therapies.

 The cost of pharmaceuticals and devices continues to generate substantial governmental and third-party payor interest. We expect that the pharmaceutical industry will continue to experience pricing pressures due to the trend toward managed healthcare, the increasing influence of managed care organizations and additional legislative proposals. As a result, our operations and business could be adversely affected by current and future third-party payor policies as well as healthcare legislative reforms.

 While we cannot predict whether any proposed cost-containment measures will be adopted or otherwise implemented in the future, these requirements or any announcement or adoption of such proposals could have a material adverse effect on our ability to obtain adequate prices for our products and any other products we may seek to commercialize, and to operate profitably.

 Healthcare Reform

 In the United States, there have been a number of legislative and regulatory changes to the healthcare system that could affect our future results of operations. In particular, there have been and continue to be a number of initiatives at the U.S. federal and state levels that seek to reduce healthcare costs. The Medicare Modernization Act imposed new requirements for the distribution and pricing of prescription drugs for Medicare beneficiaries. Under Part D, Medicare beneficiaries may enroll in prescription drug plans offered by private entities which will provide coverage of outpatient prescription drugs. Part D plans include both stand-alone prescription drug benefit plans and prescription drug coverage as a supplement to Medicare Advantage plans. Unlike Medicare Part A and B, Part D coverage is not standardized. Part D prescription drug plan sponsors are not required to pay for all covered Part D drugs, and each drug plan can develop its own drug formulary that identifies which drugs it will cover and at what tier or level. However, Part D prescription drug formularies must include drugs within each therapeutic category and class of covered Part D drugs, though not necessarily all the drugs in each category or class. Any formulary used by a Part D prescription drug plan must be developed and reviewed by a pharmacy and therapeutic committee. Government payment for some of the costs of prescription drugs may increase demand for our products. However, any negotiated prices for our products covered by a Part D prescription drug plan will likely be lower than the prices we might otherwise obtain. Moreover, while the Medicare Modernization Act applies only to drug benefits for Medicare beneficiaries, private payors often follow Medicare coverage policy and payment limitations in setting their own payment rates. Any reduction in payment that results from Medicare Part D may result in a similar reduction in payments from non-governmental payors.

 In March 2010, the Affordable Care Act was enacted, which significantly changed the way healthcare is financed by both governmental and private insurers. Among the provisions of the Affordable Care Act of importance to the pharmaceutical and biotechnology industry are the following:

 an annual, non-deductible fee on any entity that manufactures or imports certain branded prescription drugs and biologic agents, apportioned among these entities according to their market share in certain government healthcare programs;

 an increase in the rebates a manufacturer must pay under the Medicaid Drug Rebate Program to 23.1% and 13% of the average manufacturer price for branded and generic drugs, respectively;

 a Medicare Part D coverage gap discount program, in which manufacturers must agree to offer 50% (later amended to 70%) point-of-sale discounts to negotiated prices of applicable brand drugs to eligible beneficiaries during their coverage gap period, as a condition for the manufacturer's outpatient drugs to be covered under Medicare Part D;

 extension of manufacturers' Medicaid rebate liability to covered drugs dispensed to individuals who are enrolled in Medicaid managed care organizations;

 expansion of eligibility criteria for Medicaid programs by, among other things, allowing states to offer Medicaid coverage to additional individuals and by adding new mandatory eligibility categories for certain individuals with income at or below 133% of the Federal Poverty Level, thereby potentially increasing manufacturers' Medicaid rebate liability;

 expansion of the entities eligible for discounts under the Public Health Service pharmaceutical pricing program;

 a licensure framework for follow-on biologic products;

 a Patient-Centered Outcomes Research Institute to oversee, identify priorities in, and conduct comparative clinical effectiveness research, along with funding for such research;

 a requirement to annually report drug samples that manufacturers and distributors provide to physicians; and

 establishment of a Center for Medicare Innovation at CMS to test innovative payment and service delivery models to lower Medicare and Medicaid spending, potentially including prescription drug spending.

 The Affordable Care Act has been subject to challenges in the courts. On June 17, 2021, in an appeal from a lower court decision holding that the individual mandate under the Affordable Care Act is unconstitutional, the Supreme Court ruled that the plaintiffs lacked standing to challenge the law as they had not alleged personal injury traceable to the allegedly unlawful conduct. As a result, the Supreme Court did not rule on the constitutionality of the Affordable Care Act or any of its provisions.

 In addition, other legislative changes have been proposed and adopted since the Affordable Care Act was enacted. The Budget Control Act of 2011 and subsequent legislation has resulted in reductions to Medicare payments to providers of up to 2% per fiscal year, which will remain in effect through 2030 unless additional action is taken by Congress.

 The American Taxpayer Relief Act of 2012 reduced Medicare payments to several providers and increased the statute of limitations period for the government to recover overpayments to providers from three to five years. These laws may result in additional reductions in Medicare and other healthcare funding, which could have a material adverse effect on our customers and, accordingly, our financial operations. The American Rescue Plan Act of 2021 eliminates the statutory Medicaid drug rebate cap, currently set at 100% of a drug's average manufacturer price, for single source and innovator multiple source drugs, beginning January 1, 2024. Removal of the drug rebate cap can result in paying rebate payments to Medicaid that are higher than the sale price of the drug.

 The Inflation Reduction Act of 2022 ("IRA") contains substantial drug pricing reforms, including the establishment of a drug price negotiation program within the U.S. Department of Health and Human Services that would require manufacturers to charge a negotiated "maximum fair price" for certain selected drugs or pay an excise tax for noncompliance. Another component of the IRA includes the establishment of rebate payment requirements on Medicare Part D drugs which penalize price increases that outpace inflation. The IRA also redesigned Medicare Part D to reallocate cost across the various stakeholders: CMS, payors, manufacturers, and beneficiaries. Certain aspects of the Part D redesign take effect in 2024 which ultimately shifts some liability from beneficiaries to the payors. Starting in 2025, all remaining components of the Part D Redesign will take effect. Ultimately, the existing coverage gap will be removed and replaced with greater exposure for manufacturers after the beneficiary pays their deductible. Additionally, the exemption previously applied on the low-income subsidy ("LIS") population has been removed and increases manufacturer rebate exposure for that population. Some manufacturers, including Collegium, will qualify for a "phase in" of rebate utilization for the LIS population which should limit our exposure in the short term, but will increase it over time. The implementation of the IRA is currently subject to ongoing litigation that challenges the constitutionality of the IRA's Medicare drug price negotiation program. The IRA could have the effect of reducing the prices we can charge and reimbursement we receive for our products, thereby reducing our profitability, and could have a material adverse effect on our financial condition, results of operations and growth prospects. The effect of the IRA on our business and the pharmaceutical industry in general is not yet known.

 Our Environmental, Social, and Governance ("ESG") Initiatives

 Our commitment to serving as a responsible corporate citizen is rooted in our longstanding history of advancing our mission, executing our commercial strategy, governing our business to drive efficiency and value creation, and supporting our communities. We have prioritized corporate governance and risk mitigation; employee development and culture; our environmental footprint; and giving back to our communities. As a reflection of this commitment, our annual Corporate Scorecard has included metrics relating to our performance relative to specific ESG initiatives.

 In February 2024, we published our annual ESG report on our corporate website highlighting our ESG accomplishments to date. The information contained in our ESG report is not a part of, nor is it incorporated by reference into, this Form 10-K.

 Human Capital Management

 Collegium Culture and Employee Engagement

 Our employees are foundational to our current and future success, and we believe that their engagement and commitment are among our most valuable assets. As we seek to build and sustain a challenging, inspiring, and inclusive environment for our employees, we have focused on talent acquisition and retention; employee training and development; diversity and inclusion; and employee health and safety.
 At Collegium, we recognize that we have a responsibility to hold ourselves to the highest standard of business and professional ethics. Our Core Values are the foundational principles of our organization and guide our work, how we interact with each other and our communities and influence the business strategies we employ to fulfill our mission. Our Core Values are: Uphold Integrity, Embrace Differences, Encourage Expression, and Be Accountable.
 We prioritize transparency, recognition, and collaboration to support our team's engagement. We facilitate transparent communications through various channels, such as quarterly all-employee meetings, small-group employee conversations with our Chief Executive Officer, and periodic employee engagement surveys.

 Talent Acquisition and Retention

 We seek to identify, recruit, retain, incentivize, and integrate our existing and new employees, advisors, and consultants. All full-time employees receive stock-based and cash-based compensation awards through the compensation cycle; stock-based compensation includes restricted stock units for the entire organization. The principal purposes of our equity and cash incentive plans are to attract, retain and reward personnel as they strive to increase stockholder value and contribute to the success of our company by motivating such individuals to perform to the best of their abilities and achieve our objectives.

 Employee Training and Development

 We believe career development begins with good conversations between employees and their managers that ensure regular feedback, and we have implemented tools and annual processes that allow all employees in conjunction with their managers to explore possibilities and drive development action. Our comprehensive performance review process ensures our employees are on track with their development throughout the year.

 Diversity, Equity, and Inclusion

 We are committed to fostering diversity, equity, and inclusion ("DEI") in our workplace. We are unwavering in our commitment to treat our colleagues fairly, and we are open-minded and inclusive in our engagements with one other, our partners, and customers. We believe that when people feel appreciated and included, they are more creative, innovative, and successful, which in turn improves our business and performance and enhances shareholder value. We are committed to employing people whose diverse backgrounds contribute to innovation and allow us to approach the complex issues that face our industry from many different perspectives.

 We are executing our multi-year DEI strategic plan that strives to integrate DEI with our overall business goals by focusing on topics such as developing, retaining, and attracting talent; creating and sustaining a work environment where all employees feel valued and engaged; and developing a strong reputation and strategic alliance partnerships with the communities we serve.

 As of December 2023, we had a total of 197 employees with representation with respect to gender and self-reported race and ethnicity as follows:

 Ethnicity

 #

 %

 Asian (Not Hispanic or Latino)

 7.6%

 Black or African American (Not Hispanic or Latino)

 6.1%

 Hispanic or Latino

 2.5%

 Prefer Not to Disclose

 1.5%

 Two or More Races (Not Hispanic or Latino)

 1.5%

 White (Not Hispanic or Latino)

 80.8%

 Total

 100%

 Gender

 #

 %

 Female

 49.7%

 Male

 50.3%

 Total

 100%

 As in everything we do, we are committed to continuous improvement in this area. While we are proud of the diversity of backgrounds and identities that our workforce exhibits, we will make the necessary investments of time, resources, and engagement to make sustained improvements in this area.

 Employee Health and Safety
 We believe that the success of our business is fundamentally connected to the well-being of our employees; accordingly, we are committed to their health, safety, and wellness. We provide all employees and their families with access to a variety of innovative, flexible, and convenient health and wellness programs.
 Our Executive Officers

 The following table lists the positions, names and ages of our executive officers as of February 22, 2024:

 Name

 Age

 Position(s)

 Joseph Ciaffoni

 Director, President and Chief Executive Officer

 Colleen Tupper

 Executive Vice President and Chief Financial Officer

 Scott Dreyer

 Executive Vice President and Chief Commercial Officer

 Shirley Kuhlmann

 Executive Vice President, General Counsel and Chief Administrative Officer

 Thomas Smith

 Executive Vice President and Chief Medical Officer

 Joseph Ciaffoni, Director, President and Chief Executive Officer. Mr. Ciaffoni was appointed as our President and Chief Executive Officer of Collegium Pharmaceutical in July 2018. Mr. Ciaffoni joined us in May 2017 as Executive Vice President and Chief Operating Officer. Prior to joining us, he served as President, U.S. Branded Pharmaceuticals of Endo International plc. Before that, Mr. Ciaffoni held various positions of increasing responsibility at Biogen, including Senior Vice President, Global Specialty Medicines Group, Senior Vice President, U.S. Commercial and Vice President, U.S. Neurology Field Operations and Marketing. Prior to joining Biogen, he was Executive Vice President and Chief Operating Officer of Shionogi Inc. and President of Shionogi Pharmaceuticals. Mr. Ciaffoni also previously served as Vice President, Sales for Schering-Plough (now Merck) and held several commercial leadership roles at Sanofi-Synthelabo (now Sanofi) and Novartis. Mr. Ciaffoni received a B.A. in Communications and an M.B.A. from Rutgers.

 Colleen Tupper, Executive Vice President and Chief Financial Officer. Ms. Tupper joined us in May 2021 as Executive Vice President and Chief Financial Officer. Prior to joining us, Ms. Tupper most recently served as Chief Financial Officer, U.S. Business Unit as well as a member of the U.S. Business Unit Executive Leadership Team and the Global Finance Leadership Team at Takeda from January 2019 to April 2021. Prior to that role, Ms. Tupper held several roles of increasing responsibility at Shire Pharmaceuticals (acquired by Takeda in 2019) including Vice President, U.S. Commercial Finance; Vice President, Finance Integration Lead; and Vice President, Head of Finance Global Neuroscience and Ophthalmics. Earlier in her career, Ms. Tupper served in various finance and accounting roles at both Shire Pharmaceuticals and Antigenics (now Agenus). Ms. Tupper received a B.S. in Accounting from Franklin Pierce University.

 Scott Dreyer, Executive Vice President and Chief Commercial Officer. Mr. Dreyer was appointed as our Executive Vice President and Chief Commercial Officer in July 2018. Mr. Dreyer joined us in January 2018 as Senior Vice President of Sales, Marketing, Commercial Capabilities and Training. He has over 25 years of commercial experience across sales, marketing, commercial operations and strategic planning, all within the biopharma industry. Most recently, Mr. Dreyer was Senior Vice President, Marketing and Commercial Operations for The Medicines Company. Prior to joining The Medicines Company, he was Vice President and Chief Marketing Officer-U.S. at Biogen. Prior to Biogen, Mr. Dreyer held various commercial leadership positions of increasing responsibility at Merck & Co, including Vice President-U.S. Hospital and Oncology Sales and Commercial Operations, Vice President-U.S. Primary Care Sales, Executive Director U.S. Regional Marketing Leader – Neuroscience, Executive Director Customer Marketing and Solutions, Sr. Director of Strategic Planning and Director of Cardiovascular Marketing. Mr. Dreyer received a B.S. in Biology from Messiah College.

 Shirley Kuhlmann, Executive Vice President, General Counsel and Chief Administrative Officer. Ms. Kuhlmann joined Collegium Pharmaceutical in March 2018 as Executive Vice President, General Counsel and Secretary and has also served as Chief Administrative Officer since March 2022. Prior to joining Collegium, Ms. Kuhlmann was an attorney in the Health Sciences Group of Pepper Hamilton LLP, a law firm headquartered in Philadelphia, Pennsylvania. Ms. Kuhlmann began her career at Pepper Hamilton in 2007 as an Associate and was elected a Partner of the firm in 2016. While with Pepper Hamilton, she advised private and public companies on a range of transactional matters, including securities offerings, mergers and acquisitions and other financing transactions. Ms. Kuhlmann received a B.A. in Economics and Political Science from Columbia University and a J.D. from the Emory University School of Law.

 Thomas Smith, M.D., Executive Vice President and Chief Medical Officer. Dr. Smith has served as our Chief Medical Officer since March 2022 following the acquisition of BDSI. Dr. Smith has more than twenty-five years of experience in a variety of leadership roles at various major pharmaceutical companies, including serving as the Chief Medical Officer for BDSI from July 2018 to March 2022, Charleston Laboratories from January 2017 to July 2018, Ameritox and Mallinckrodt Pharmaceuticals. Prior to these, Dr. Smith served in scientific, medical and clinical leadership roles at Abbott Laboratories, Teva Pharmaceuticals and Kendle International. He is a member of several medical and scientific societies, including the American Medical Association and the American Academy of Family Physicians. Dr. Smith earned his M.D. from the Indiana University School of Medicine and a B.S. from Purdue University.

 Our Corporate Information

 We are headquartered in Stoughton, Massachusetts and our common stock trades on the NASDAQ Global Select Market ("NASDAQ") under the trading symbol "COLL."

 Our predecessor was incorporated in Delaware in April 2002 under the name Collegium Pharmaceuticals, Inc. and in October 2003, our predecessor changed its name to Collegium Pharmaceutical, Inc. In July 2014, we reincorporated in the Commonwealth of Virginia pursuant to a merger whereby Collegium Pharmaceutical, Inc., a Delaware corporation, merged with and into Collegium Pharmaceutical, Inc., a Virginia corporation, with the Virginia corporation surviving the merger.

 Available Information

 We maintain a website at www.collegiumpharma.com. We make available, free of charge on our website, 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 filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended ("Exchange Act"), as soon as reasonably practicable after we electronically file those reports with, or furnish them to, the Securities and Exchange Commission ("SEC"). We also make available, free of charge on our website, the reports filed with the SEC by our officers, directors and 10% shareholders pursuant to Section 16 under the Exchange Act as soon as reasonably practicable after copies of those filings are provided to us by those persons. The SEC also maintains a website, at www.sec.gov, that contains reports, proxy and information statements and other information regarding us and other issuers that file electronically. The information contained on, or that can be accessed through, our website is not a part of or incorporated by reference in this Form 10-K.

 Item 1A. Risk Factors
 Investing in our common stock involves a high degree of risk. Investors should carefully consider the risks described below, as well as all other information included in this Annual Report on Form 10-K, including our financial statements, the notes thereto and the section entitled "Management's Discussion and Analysis of Financial Condition and Results of Operations." If any of the following risks actually occurs, our business, financial condition, operating results, prospects and ability to accomplish our strategic objectives could be materially harmed. As a result, the trading price of our common stock could decline and investors could lose all or part of their investment. Additional risks and uncertainties not presently known to us or that we currently deem immaterial may also impair our business operations and the market price of our common stock.
 Risk Factors Summary
 Our business is subject to a number of risks and uncertainties, including those risks discussed at length below. These risks include, among others, the following principal risk factors that make an investment in our company speculative or risky. You are encouraged to carefully review our full discussion of the material risk factors relevant to an investment in our business, which follows the brief bulleted list of our principal risk factors set forth below:

 Our ability to maintain profitability is dependent upon our ability to continue successfully commercializing our products and any products we may acquire in the future;

 We have substantial outstanding indebtedness, which may adversely affect our business, financial condition and results of operations;

 Adverse developments affecting the financial services industry could adversely affect our business, financial condition, or results of operations;

 If we cannot continue successfully commercializing our products and any products that we may acquire in the future, our business, financial condition and results of operations may be materially adversely affected and the price of our common stock may decline;

 Despite receiving approval by the FDA, additional data may emerge that could change the FDA's position on the product labeling of any of our products, including our abuse-deterrent claims with respect to Xtampza ER, and our ability to market our products successfully may be adversely affected;

 Xtampza ER, the Nucynta Products, and Belbuca are subject to mandatory REMS programs, which could increase the cost, burden and liability associated with the commercialization of these products;

 Failure to comply with ongoing governmental regulations for marketing our products, and in particular any failure to promote Xtampza ER's abuse deterrent labeling in compliance with FDA regulations, could delay or inhibit our ability to generate revenues from their sale and could also expose us to claims or other sanctions;

 Unfavorable outcomes in intellectual property litigation could be costly and potentially limit our ability to commercialize our products;

 If we are unable to obtain or maintain intellectual property rights for our technologies, products or any products we may acquire, we may lose valuable assets or be unable to compete effectively in our market;

 We have been, and may continue to be, forced to litigate to enforce or defend our intellectual property, which could be expensive, time consuming and unsuccessful, and result in the loss of valuable assets;

 Obtaining and maintaining our patent protection depends on compliance with various procedural, document submissions, fee payment and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated for non-compliance with these requirements;

 If we are unable to utilize our own sales and marketing capabilities successfully or enter into strategic alliances with marketing collaborators, we may not continue to be successful in commercializing our products and may be unable to generate sufficient product revenue;

 If the medical community, patients, and healthcare payors do not accept and use our products, we will not achieve sufficient product revenues and our business will suffer;

 Our products contain controlled substances, the manufacture, use, sale, importation, exportation and distribution of which are subject to regulation by state and federal law enforcement and other regulatory agencies;

 Current and future legislation may increase the difficulty and cost for us to continue to commercialize our products and may reduce the prices we are able to obtain for our products;

 Our products may become subject to unfavorable pricing regulations or third-party coverage and reimbursement policies, which could have a material adverse effect on our business. Such pricing regulations may address the

 rebates that manufacturers offer to pharmaceutical benefit managers, or the discounts that manufacturers provide others within the pharmaceutical distribution chain;

 Social issues around the abuse of opioids, including law enforcement concerns over diversion of opioids and regulatory and enforcement efforts to combat abuse, could decrease the potential market for our products and may adversely impact external investor perceptions of our business;

 If the FDA or other applicable regulatory authorities approve generic products with abuse deterrent claims that compete with our products, our sales could decline;

 If the third-party manufacturers of our products fail to devote sufficient time and resources to these products, or their performance is substandard, and/or we encounter challenges with our dedicated manufacturing suite at our third-party manufacturer's site for the manufacturing of Xtampza ER, our costs may be higher than expected and could have a material adverse effect on our business;

 Because we currently rely on a sole supplier or limited number of suppliers to manufacture the active pharmaceutical ingredient of our products, any production problems with any of these suppliers could have a material adverse effect on us;

 We depend on wholesale pharmaceutical distributors for retail distribution of our products; if we lose any of our significant wholesale pharmaceutical distributors or their distribution network is disrupted, our financial condition and results of operations may be adversely affected;

 Our products could be subject to post-marketing requirements, which requirements may, in some cases, not be capable of timely or satisfactory completion without participation in consortia over which we have limited control;

 We may not realize all of the anticipated benefits from future acquisitions, and we may be unable to successfully integrate future acquisitions;

 Our business may be adversely affected by certain events or circumstances outside our control, including macroeconomic conditions and geopolitical turmoil;

 Litigation or regulatory action regarding opioid medications could negatively affect our business;

 We face substantial competition from other biotechnology and pharmaceutical companies, which may result in others discovering, developing or commercializing products more successfully than we do;

 Commercial sales of our products may expose us to expensive product liability claims, and we may not be able to maintain product liability insurance on reasonable terms or at all;

 Our relationships with customers and payors are subject to applicable anti-kickback, fraud and abuse, transparency, and other healthcare laws and regulations, which could expose us to criminal sanctions, civil penalties, exclusion from government healthcare programs, contractual damages, reputational harm, administrative burdens, and diminished profits and future earnings; and

 The price of our common stock may be volatile and you may lose all or part of your investment.

 Risks Related to Our Financial Position and Capital Needs
 Our ability to maintain profitability is dependent upon our ability to continue successfully commercializing our products and any products that we may acquire in the future. Our failure to do so successfully could impair our growth strategy and plans and could have a material adverse effect on our business, financial position, and operating results.
 Our ability to maintain profitability depends upon our ability to realize the full commercial potential of our products and to commercialize successfully any other products that we may in-license or acquire in the future. Our ability to generate revenue from our current or future products depends on a number of factors, including our ability to:

 realize a commercially viable price for our products;

 manufacture commercial quantities of our products at acceptable cost levels;

 sustain a commercial organization capable of sales, marketing and distribution for the products we sell;

 obtain coverage and adequate reimbursement from third parties, including government payors;

 acquire new products, or develop new indications or line extensions for existing products, in the event that revenues from our existing products are impacted by price controls, loss of intellectual property exclusivity or competition; and

 comply with existing and changing laws and regulations that apply to the pharmaceutical industry, including opioid manufacturers, and to our products specifically, including FDA post-marketing requirements.

 If we fail to maintain profitability on a continuing basis, then we may be unable to continue our operations at planned levels and be forced to reduce our operations.

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

 As of December 31, 2023, we had a U.S. federal net operating loss ("NOL") carryforward of approximately $137.5 million and state NOL carryovers of approximately $202.4 million. The U.S. federal and state NOL carryforwards expire at various dates through 2037. Federal NOLs and certain state NOLs incurred in 2018 and onward have an indefinite expiration under the Tax Cuts and Jobs Act of 2017 and applicable state statutes. We also had U.S. federal tax credits of approximately $1.0 million, and state tax credits of approximately $0.7 million. These tax attributes are generally subject to a limited carryover/carryback period and are also subject to the annual limitations that may be imposed under Section 382 of the Internal Revenue Code of 1986, as amended ("IRC 382").

 In 2021, we completed a study to assess the impact of ownership changes, if any, on our ability to use our NOL and tax credit carryovers as defined under IRC 382 (the "IRC 382 Study"). As a result of the study, we concluded that there were ownership changes that occurred during the years 2006, 2012 and 2015 that would be subject to IRC 382 limitations. These IRC 382 annual limitations may limit our ability to use pre-ownership change federal NOL carryovers and pre-ownership change federal tax credit carryovers, which may potentially limit our ability to reduce our future federal income tax liability by using these losses.

 As part of the BDSI acquisition, we acquired an estimated $234.7 million of federal NOL carryovers which are generally subject to a limited carryover/carryback period and are also subject to the annual limitations that may be imposed under IRC 382. We performed an IRC 382 study following the BDSI Acquisition in 2022 and concluded that there were ownership changes that occurred during the years 2006 and 2022 that would be subject to IRC 382 limitations. These IRC 382 annual limitations may limit our ability to use pre-ownership change federal NOL carryovers and pre-ownership change federal tax credit carryovers, which may potentially limit our ability to reduce our future federal income tax liability by using these losses. As of December 31, 2023, remaining net operating losses of $124.3 million are subject to limitation. Refer to Note 18, Income Taxes, to our consolidated financial statements included in Part IV of this Annual Report on Form 10-K for more information.

 We have substantial outstanding indebtedness, which may adversely affect our business, financial condition and results of operations.

 In March 2022, we entered into a $650.0 million secured term loan (the "2022 Term Loan") pursuant to our Amended and Restated Loan Agreement with BioPharma Credit PLC, as collateral agent and lender, and BioPharma Credit Investments V (Master) LP, as lender (as amended from time to time, the "2022 Loan Agreement"), of which $412.5 million in principal was outstanding as of December 31, 2023. In addition, we have $26.4 million in 2.625% Convertible Senior Notes due in 2026 (the "2026 Convertible Notes") and $241.5 million in 2.875% Convertible Senior Notes due 2029 (the "2029 Convertible Notes" and, together with the 2026 Convertible Notes, the "Convertible Notes"). We may also incur additional indebtedness to meet future financing needs. Our existing and future levels of indebtedness could have significant negative consequences for our security holders and our business, results of operations and financial condition by, and among other things:

 requiring the dedication of a substantial portion of our cash flows from operations to service our indebtedness, which will reduce the amount of cash available for operations, working capital, capital expenditures, expansion, acquisitions or general corporate or other purposes;

 limiting our ability to obtain additional financing;

 limiting our flexibility to plan for, or react to, changes in our business;

 exposing us to the risk of increased interest rates as certain of our borrowings, including the 2022 Term Loan, are at variable rates of interest;

 diluting the interests of our existing shareholders as a result of issuing shares of our common stock upon conversion of the Convertible Notes;

 placing us at a possible competitive disadvantage with competitors that are less leveraged than we are or have better access to capital; and

 increasing our vulnerability to downturns in our business, our industry or the economy in general.

 Holders of our Convertible Notes, subject to a limited exception described in the notes, may require us to repurchase their notes following a fundamental change at a cash repurchase price generally equal to the principal amount of the notes to be repurchased, plus accrued and unpaid interest, if any. In addition, upon conversion, we will satisfy part or all of our conversion obligation in cash unless we elect to settle conversions solely in shares of our common stock. We may not have enough available cash or be able to obtain financing at the time we are required to repurchase the notes or pay the cash amounts due upon conversion. Applicable law, regulatory authorities and the agreements governing our other indebtedness may restrict our ability to repurchase the notes or pay the cash amounts due upon conversion, and any failure by us to repurchase notes or to pay the cash amounts due upon the conversion when required would constitute a default under the indenture.

 Additionally, the indentures governing the Convertible Notes and our 2022 Loan Agreement contain certain covenants and obligations applicable to us, including, without limitation, covenants that limit our ability to incur additional indebtedness or liens, make acquisitions or other investments or dispose of assets outside the ordinary course of business, which could limit our ability to capitalize on business opportunities that may arise or otherwise place us at a competitive disadvantage relative to our competitors.

 Failure to comply with covenants in the indentures governing the Convertible Notes or in the 2022 Loan Agreement would constitute an event of default under those instruments, notwithstanding our ability to meet our debt service obligations. A default under the indentures or a fundamental change could also result in a default under one or more of the agreements governing our other indebtedness, which may result in that other indebtedness becoming immediately payable in full. In such event, we may not have sufficient funds to satisfy all amounts that would become due. The 2022 Loan Agreement includes various customary remedies for the lenders following an event of default, including the acceleration of repayment of outstanding amounts under the 2022 Loan Agreement and execution upon the collateral securing obligations under the 2022 Loan Agreement. In addition, because our assets are pledged as a security under the 2022 Loan Agreement, if we are not able to cure any default or repay outstanding borrowings, our assets would be subject to the risk of foreclosure by our lenders.

 Further, amounts outstanding under our 2022 Loan Agreement historically bore interest at a rate based on the London Interbank Offered Rate ("LIBOR"), and, effective July 1, 2023, bears interest at a rate based on the Secured Overnight Financing Rate ("SOFR") subject to a SOFR floor of 1.2%. We have not hedged our interest rate exposure with respect to our floating rate debt. Accordingly, our interest expense for any period will fluctuate based on SOFR and other variable interest rates, as applicable. To the extent the interest rates applicable to our floating rate debt increase, our interest expense will increase, in which event we may have difficulties making interest payments and funding our other fixed costs, and our available cash flow for general corporate requirements may be adversely affected.

 Adverse developments affecting the financial services industry, including events or concerns involving liquidity, defaults or non-performance by financial institutions or transactional counterparties, could adversely affect our business, financial condition, or results of operations.

 Events involving limited liquidity, defaults, non-performance or other adverse developments that affect financial institutions, transactional counterparties or other companies in the financial services industry or the financial services industry generally, or concerns or rumors about any events of these kinds or other similar risks, have in the past and may in the future lead to market-wide liquidity problems. For example, in early 2023, several financial institutions closed and were taken into receivership by the Federal Deposit Insurance Corporation ("FDIC"). Although we assess our banking and customer relationships as we believe necessary or appropriate, our access to funding sources and other credit arrangements in amounts adequate to finance or capitalize our current and projected future business operations could be significantly impaired by factors that affect us, the financial services industry or economy in general. Further, investor concerns regarding domestic or international financial systems could result in less favorable commercial financing terms, including higher interest rates or costs and tighter financial and operating covenants, or systemic limitations on access to credit and liquidity sources, thereby making it more difficult for us to acquire financing on acceptable terms or at all. Any decline in available funding or access to cash and liquidity resources could, among other risks, adversely impact our ability to meet our financial obligations, which could have material adverse impacts on our liquidity and our business, financial condition, or results of operations.

 Risks Related to our Products

 If we cannot continue successfully commercializing our products and any products that we may acquire in the future, our business, financial condition and results of operations may be materially adversely affected and the price of our common stock may decline.

 Our business and future success are substantially dependent on our ability to continue successfully commercializing our products, including Xtampza ER, the Nucynta Products, Belbuca and Symproic, and any products that we may acquire in the future.

 Our ability to continue successfully commercializing our products will depend on many factors, including but not limited to:

 our ability to manufacture commercial quantities of our products at reasonable cost and with sufficient speed to meet commercial demand;

 our ability to execute sales and marketing strategies successfully and continually;

 our success in educating physicians, patients and caregivers about the benefits, administration, use and coverage of our products;

 with respect to Xtampza ER, the perceived availability and advantages, relative cost, relative safety and relative efficacy of other abuse-deterrent products and treatments with similar indications;

 our ability to defend successfully any challenges to our intellectual property or suits asserting patent infringement relating to our products;

 the availability and quality of coverage and adequate reimbursement for our products;

 a continued acceptable safety profile of our products;

 our ability to acquire new products, or develop new indications or line extensions for existing products, in the event that revenues from our existing products are impacted by price controls, loss of intellectual property exclusivity or competition; and

 our ability to comply with applicable legal and regulatory requirements, including any additional manufacturing or packaging requirements that may become applicable to certain opioid products.

 Many of these matters are beyond our control and are subject to other risks described elsewhere in this "Risk Factors" section. Accordingly, we cannot assure you that we will be able to continue successfully commercializing or to generate sufficient revenue from our products. If we cannot do so, or are significantly delayed in doing so, our business will be materially harmed.

 Despite receiving approval by the FDA, additional data may emerge that could change the FDA's position on the product labeling of any of our products, including our abuse-deterrent claims with respect to Xtampza ER, and our ability to market our products successfully may be adversely affected.

 Xtampza ER was approved with label language describing abuse-deterrent properties of the formulation with respect to the nasal and IV routes of abuse, consistent with Guidance for Industry, "Abuse-Deterrent Opioids- Evaluation and Labeling." In November 2017, the FDA approved a sNDA for Xtampza ER to include comparative oral pharmacokinetic data from a clinical study evaluating the effect of physical manipulation by crushing Xtampza ER compared with OxyContin and a control (oxycodone hydrochloride immediate-release), results from an oral human abuse potential study and the addition of an oral abuse deterrent claim.

 The FDA can require changes to the product labeling for any of our products at any time which can impact our ability to generate product sales. In particular, if the FDA determines that our post-marketing data for Xtampza ER does not demonstrate that the abuse-deterrent properties result in reduction of abuse, or demonstrates a shift to routes of abuse that present a greater risk, the FDA may find that product labeling revisions are needed, and potentially require the removal of our abuse-deterrence claims, which would have a material adverse effect on our ability to continue successfully commercializing Xtampza ER.

 Our opioid products are subject to mandatory REMS programs, which could increase the cost, burden and liability associated with the commercialization of these products.

 The FDA has imposed a class-wide REMS on all IR, ER and long-acting opioid drug products (known as the Opioid Analgesic REMS). The FDA continually evaluates whether the REMS program is meeting its goal of ensuring that the benefit of these drugs continue to outweigh their risks, and whether the goals or elements of the program should be modified. As opioids, Xtampza ER, the Nucynta Products and Belbuca are subject to the Opioid Analgesic REMS.

 Any modification of the Opioid Analgesic REMS by the FDA to impose additional or more burdensome requirements could increase the costs associated with marketing these products and/or reduce the willingness of healthcare providers to prescribe these products, which would have a material adverse effect on our ability to continue to successfully commercialize and generate sufficient revenue from these products.

 Failure to comply with ongoing governmental regulations for marketing our products, and in particular any failure to promote Xtampza ER's abuse deterrent labeling in compliance with FDA regulations, could delay or inhibit our ability to generate revenues from their sale and could also expose us to claims or other sanctions.

 In addition to scrutiny by the FDA, advertising and promotion of any pharmaceutical product marketed in the United States is heavily scrutinized by, among others, the Department of Justice, the Office of Inspector General for the U.S. Department of Health and Human Services, state attorneys general, members of Congress and the public. Violations, including promotion of our products for unapproved or off-label uses, are subject to enforcement letters, inquiries and investigations, and civil and criminal sanctions by government agencies.

 In particular, Xtampza ER has FDA-approved product labeling that describes its abuse deterrent features, which allows us to promote those features and differentiate Xtampza ER from other opioid products containing the same active pharmaceutical ingredients. Because the FDA closely regulates promotional materials and other promotional activities, even though the FDA-approved product labeling includes a description of the abuse deterrent characteristics of Xtampza ER, the FDA may object to our marketing claims and product advertising campaigns.

 Engaging in off-label promotion of our products, including Xtampza ER, could subject us to false claims liability under federal and state statutes, and other litigation and/or investigations, and could lead to the issuance of warning letters or untitled letters, suspension or withdrawal of our products from the market, recalls, fines, disgorgement money, operating restrictions, injunctions, and civil or criminal prosecution. Any of these consequences would harm the commercial success of our products, including Xtampza ER.

 Further, discovery of serious and unanticipated adverse events associated with the product; the emergence of other problems with the product, manufacturer or facility; or our failure to make required regulatory submissions may result in adverse regulatory actions, including withdrawal of the product from the market or the requirement to add or strengthen label warnings about the product. The failure to obtain or maintain requisite governmental approvals or the imposition of additional or stronger warnings could delay or preclude us from realizing the full commercial potential of our products.

 Risks Related to Intellectual Property

 Unfavorable outcomes in intellectual property litigation could be costly and potentially limit our ability to commercialize our products.

 Our commercial success depends upon our ability to commercialize products without infringing the intellectual property rights of others. Our current or future products, or any uses of them, may now or in the future infringe third-party patents or other intellectual property rights. We cannot currently determine the ultimate scope and validity of patents which may be granted to third parties in the future or which patents might be asserted to be infringed by the manufacture, use and sale of our products.

 If we are found to infringe a third party's intellectual property rights, we could be required to obtain a license from such third party to continue developing or commercializing our products and technology. However, we may not be able to obtain any required license on commercially reasonable terms or at all. Even if we are able to obtain a license, it may be non-exclusive, thereby giving our competitors access to the same technologies licensed to us. We could be forced, including by court order, to cease commercializing the infringing technology or product. In addition, in any such

 proceeding or litigation, we could be found liable for monetary damages, including treble damages and attorneys' fees, if we are found to have willfully infringed a patent. A finding of infringement could prevent us from commercializing our products or force us to cease some of our business operations.

 Any litigation, including any interference or derivation proceedings to determine priority of inventions, oppositions or other post-grant review proceedings to patents in the United States, or litigation against our collaborators may be costly and time consuming and could have a material adverse effect on our operating results, our ability to raise capital needed to commercialize products and our overall financial condition. We expect that litigation may be necessary in some instances to determine the validity and scope of our proprietary rights. Litigation may be necessary in other instances to determine the validity, scope or non-infringement of certain patent rights claimed by third parties to be pertinent to the manufacture, use or sale of our products. Ultimately, the outcome of such litigation, including our pending litigation with Purdue, could compromise the validity and scope of our patents or other proprietary rights or hinder our ability to manufacture and market our products.

 If we are unable to obtain or maintain intellectual property rights for our technologies, products or any products we may acquire, we may lose valuable assets or be unable to compete effectively in our market.

 We depend on our ability to protect our proprietary technology. We rely on patent and trademark laws, unpatented trade secrets and know-how, and confidentiality, licensing and other agreements with employees and third parties, all of which offer only limited protection. Our success depends in large part on our ability to obtain and maintain patent protection in the United States with respect to our proprietary technology and products.

 The steps we have taken to protect our proprietary rights may not be adequate to preclude misappropriation of our proprietary information or infringement of our intellectual property rights in the United States. The rights already granted under any of our currently issued patents and those that may be granted under future issued patents may not provide us with the proprietary protection or competitive advantages we are seeking.

 We have been, and may continue to be, forced to litigate to enforce or defend our intellectual property, which could be expensive, time consuming and unsuccessful, and result in the loss of valuable assets.

 We have been, and may continue to be, forced to litigate to enforce or defend our intellectual property rights against infringement and unauthorized use by competitors, and to protect our trade secrets, including in connection with our pending litigation against generic competitors that have filed Paragraph IV Certifications relating to certain of our products. In so doing, we may place our intellectual property at risk of being invalidated, rendered unenforceable or limited or narrowed in scope. This litigation is expensive and time consuming. Many of our current and potential competitors have the ability to dedicate substantially greater resources to defend their intellectual property rights than we can.

 Accordingly, despite our efforts, we may not be able to prevent third parties from infringing upon or misappropriating our intellectual property. Litigation could result in substantial costs and diversion of management resources, which could have a material adverse effect on our operating results, our ability to raise capital needed to commercialize products and our overall financial condition. In addition, an adverse result in any litigation proceeding could put one or more of our patents at risk of being invalidated, held unenforceable or interpreted narrowly.

 If we are unable to protect the confidentiality of our trade secrets, our business and competitive position would be harmed.

 In addition to seeking patents for some of our technology and products, we rely on trade secrets, including unpatented know-how, technology and other proprietary information, to maintain our competitive position. We seek to protect these trade secrets, in part, by entering into non-disclosure and confidentiality agreements with parties who have access to them, such as our employees, corporate collaborators, outside scientific collaborators, contract manufacturers, consultants, advisors and other third parties. Despite these efforts, any of these parties may breach the agreements and disclose our proprietary information, including our trade secrets, and we may not be able to obtain adequate remedies for such breaches. Enforcing a claim that a party illegally disclosed or misappropriated a trade secret is difficult, expensive and time-consuming, and the outcome is unpredictable. In addition, some courts in the United States may be less willing or unwilling to protect trade secrets. If any of our trade secrets were to be lawfully obtained or independently developed by a competitor, we would have no right to prevent such competitor, or those with whom they communicate, from using

 that technology or information to compete with us. If any of our trade secrets were to be disclosed or independently developed, our competitive position would be harmed.

 Obtaining and maintaining our patent protection depends on compliance with various procedural, document submissions, fee payment and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated for non-compliance with these requirements.

 The United States Patent and Trademark Office ("USPTO") requires compliance with a number of procedural, documentary, fee payment and other similar provisions during the patent application process. In addition, periodic maintenance fees on issued patents are required to be paid to the USPTO in several stages over the lifetime of the patents. While an inadvertent lapse can in many cases be cured by payment of a late fee or by other means in accordance with the applicable rules, there are situations in which noncompliance can result in abandonment or lapse of the patent or patent application, resulting in partial or complete loss of patent rights in the relevant jurisdiction. Non-compliance events that could result in abandonment or lapse of a patent or patent application include, but are not limited to, failure to respond to official actions within prescribed time limits, non-payment of fees, and failure to properly legalize and submit formal documents. If we fail to maintain the patents and patent applications covering our products, our competitive position would be adversely affected.

 Risks Related to the Commercialization of Our Products

 If we are unable to utilize our own sales and marketing capabilities successfully or enter into strategic alliances with marketing collaborators, we may not continue to be successful in commercializing our products and may be unable to generate sufficient product revenue.

 Our commercial organization continues to evolve and we cannot guarantee that we will continue to be successful in marketing our products. In addition, we compete with other pharmaceutical and biotechnology companies with extensive and well-funded sales and marketing operations to recruit, hire, train and retain sales and marketing personnel. If we are unable to continue to grow and maintain adequate sales, marketing and distribution capabilities, whether independently or with third parties, including with respect to our recent acquisition of Belbuca and Symproic, we may not be able to generate sufficient product revenue and may not remain profitable. Factors that may inhibit our efforts to continue successfully commercializing our products in the United States include:

 our inability to recruit and retain adequate numbers of effective sales and marketing personnel;

 the inability of sales personnel to reach adequate numbers of physicians who may prescribe our products; and

 unforeseen costs and expenses associated with creating and maintaining an independent sales and marketing organization.

 If we are not successful in retaining sales and marketing personnel or in maintaining our sales and marketing infrastructure or if we do not preserve strategic alliances with marketing collaborators, agreements with contract sales organizations or collaboration arrangements, we will have difficulty in continuing to commercialize our products.

 If the medical community, patients, and healthcare payors do not accept and use our products, we will not achieve sufficient product revenues and our business will suffer.
 Physicians and others in the medical community, patients, and healthcare payors may not continue to accept and use our products, or accept and use any new products that we may acquire. Acceptance and use of our products will depend on a number of factors including:

 approved indications, warnings and precautions language that may be less desirable than competitive products;

 perceptions of physicians and other healthcare community members of the safety and efficacy of our products;

 perceptions by members of the healthcare community, including physicians, about the relevance and efficacy of our abuse deterrent technology;

 the availability of competitive products;

 the pricing and cost-effectiveness of our products relative to competing products;

 the potential and perceived advantages of our products over alternative treatments;

 the convenience and ease of administration to patients of our products;

 actual and perceived availability and quality of coverage and reimbursement for our products from government or other third-party payors;

 negative publicity related to our products or negative or positive publicity related to our competitors' products;

 the prevalence and severity of adverse side effects;

 policy initiatives by FDA, HHS, DEA, or other federal or state agencies regarding opioids;

 our ability to comply with the Opioid Analgesic REMS; and

 the effectiveness of marketing and distribution efforts by us and any licensees and distributors.

 If our products fail to have an adequate level of acceptance by the medical community, patients, or healthcare payors, we will not be able to generate sufficient revenue to remain profitable. Since we expect to rely on sales generated by Xtampza ER, the Nucynta Products, Belbuca, and Symproic for substantially all of our revenues for the foreseeable future, the failure of these products to maintain market acceptance would harm our business prospects.

 Some of our products contain controlled substances, and the manufacture, use, sale, importation, exportation and distribution of which are subject to regulation by state and federal law enforcement and other regulatory agencies.

 Some of our products contain controlled substances that are subject to state and federal laws and regulations regarding their manufacture, use, sale, importation, exportation and distribution. Xtampza ER's active ingredient, oxycodone, and the Nucynta Products' active ingredient, tapentadol, are both classified as Schedule II controlled substances under the CSA and regulations of the DEA and the active ingredient in Belbuca, buprenorphine, is classified as a Schedule III controlled substance. A number of states also independently regulate these drugs, including oxycodone, tapentadol and buprenorphine, as controlled substances. We and our suppliers, manufacturers, contractors, customers and distributors are required to obtain and maintain applicable registrations from state and federal law enforcement and regulatory agencies and comply with state and federal laws and regulations regarding the manufacture, use, sale, importation, exportation and distribution of controlled substances.

 Furthermore, the amount of Schedule II substances that can be obtained for clinical trials and commercial distribution is limited by the CSA and DEA regulations. For more information, refer to the section in our Annual Report entitled "Business — Government Regulation — DEA and Opioid Regulation." We may not be able to obtain sufficient quantities of these controlled substances in order to meet commercial demand. If commercial demand for Xtampza ER, or any of our other approved products, increases and we cannot meet such demand in a timely fashion because of our limited supply of its active pharmaceutical ingredient (in the case of Xtampza ER, oxycodone) then physicians may perceive such product as unavailable and may be less likely to prescribe it in the future.

 In addition, controlled substances are also subject to regulations governing manufacturing, labeling, packaging, testing, dispensing, production and procurement quotas (for Schedule I and II substances), recordkeeping, reporting, handling, shipment and disposal. These regulations increase the personnel needs and the expense associated with commercialization of our products that include controlled substances. The DEA and some states conduct periodic inspections of registered establishments that handle controlled substances.

 Failure to obtain and maintain required registrations or to comply with any applicable regulations could delay or preclude us from manufacturing and commercializing our products that contain controlled substances and subject us to enforcement action. The DEA may seek civil penalties, refuse to renew necessary registrations or initiate proceedings to revoke those registrations. In some circumstances, violations could lead to criminal proceedings. Because of their restrictive nature, these regulations could limit commercialization of our products containing controlled substances.

 Current and future legislation may increase the difficulty and cost for us to continue to commercialize our products and may reduce the prices we are able to obtain for our products.

 In the United States, there have been a number of legislative and regulatory changes and proposed changes regarding the healthcare system generally, and the manufacturing, distribution, and marketing of opioids in particular, that could affect our ability to commercialize our products. For example, several states, including New York, have imposed taxes or fees on the sale of opioids. Other states, and even the federal government, could impose similar taxes or fees, and such laws and proposals can vary in the tax and fee amounts imposed and the means of calculation. Liabilities for taxes or assessments under any such laws could have an adverse impact on our results of operations.

 California and several other states have enacted legislation related to prescription drug pricing transparency and it is unclear the effect this legislation will have on our business. Laws intended to broaden access to health insurance, reduce or constrain the growth of healthcare spending, enhance remedies against fraud and abuse, add new transparency requirements for health care and health insurance industries, impose new taxes and fees on the health industry and impose additional health policy reforms may continue the downward pressure on pharmaceutical pricing, especially under the Medicare program, and may also increase our regulatory burdens and operating costs.

 Legislative and regulatory proposals have been made to expand post-approval requirements and restrict sales and promotional activities for pharmaceutical products. We cannot be sure whether additional legislative changes will be enacted, or whether the FDA regulations, guidance or interpretations will be changed, or what the impact of such changes on the marketing of our products may be. In addition, increased scrutiny by the U.S. Congress of the FDA's approval process may subject us to more stringent product labeling and post-marketing testing and other requirements.

 Our products may become subject to unfavorable pricing regulations or third-party coverage and reimbursement policies, which could have a material adverse effect on our business. Such pricing regulations may address the rebates that manufacturers offer to pharmaceutical benefit managers, or the discounts that manufacturers provide others within the pharmaceutical distribution chain.

 The regulations that govern marketing approvals, pricing and reimbursement for new drug products can vary widely. Current and future legislation may significantly change the approval requirements in ways that could involve additional costs and cause delays in obtaining approvals. Pricing limitations may hinder our ability to recoup our investment in our products.

 Our ability to commercialize any product successfully will also depend in part on the extent to which coverage and adequate reimbursement for these products and related treatments will be available from government health administration authorities, private health insurers and other organizations. Government authorities and third-party payors determine which medications they will cover and establish reimbursement levels and tiers of preference based on the perceived value and innovation of a given product. A primary trend in the U.S. healthcare industry and elsewhere is cost containment. Government authorities and other third-party payors have attempted to control costs by limiting coverage and the amount of reimbursement for particular medications and establishing administrative hurdles that incentivize use of generic and/or lower cost products first. Increasingly, third-party payors are requiring that drug companies provide them with discounts and rebates from list prices and are challenging the prices charged for medical products. We have agreed to provide such discounts and rebates to certain third-party payors. We expect increasing pressure to offer larger discounts and rebates. Additionally, a greater number of third-party payors may seek discounts and rebates in order to offer or maintain access for our products. We cannot be sure that high-quality coverage and reimbursement will be available for any product that we commercialize and, if reimbursement is available, what the level of reimbursement will be and whether it will be satisfactory.

 Reimbursement rates may vary according to the use of the drug and the clinical setting in which it is used, may be based on reimbursement levels already set for lower cost drugs and may be incorporated into existing payments for other services. Net prices for drugs may be reduced by mandatory discounts or rebates required by government healthcare programs or private payors and by any future relaxation of laws that presently restrict imports of drugs from policy and payment limitations in setting their own reimbursement policies.

 In August 2022, the Inflation Reduction Act of 2022 was signed into law. This legislation contains substantial drug pricing reforms, including the establishment of a drug price negotiation program within the U.S. Department of Health and Human Services that would subject manufacturers of some brand-name medications without generic or biosimilar competition to a price negotiation program that results in a negotiated "maximum fair price" (or pay an excise tax for noncompliance), the establishment of rebate payment requirements on manufacturers of drugs payable under Medicare Parts B and D to penalize price increases that outpace inflation, and revises the way manufacturers provide discounts on Part D drugs. The IRA also caps Medicare beneficiaries' annual out-of-pocket drug expenses at $2,000 per year, thereby eliminating the Medicare Part D coverage gap or "donut hole." Substantial penalties can be assessed for noncompliance with the drug pricing provisions in the IRA. The IRA could have the effect of reducing the prices we can charge and reimbursement we receive for our products, thereby reducing our profitability, and could have a material adverse effect on our financial condition, results of operations and growth prospects. The effect of the IRA on our business and the pharmaceutical industry in general is not yet known.

 Our inability to expand and maintain coverage and profitable reimbursement rates from both government-funded and private payors for our products could have a material adverse effect on our operating results, our ability to raise capital needed to continue to commercialize our products and our overall financial condition.

 The Affordable Care Act and any changes in healthcare law may increase the difficulty and cost for us to continue to commercialize our products and affect the prices we may obtain.

 The United States and many foreign jurisdictions have enacted or proposed legislative and regulatory changes affecting the healthcare system that may affect our ability to profitably sell our products, including implementing cost-containment programs to limit the growth of government-paid healthcare costs, including price controls, restrictions on reimbursement and requirements for substitution of generic products for branded prescription drugs.

 The Affordable Care Act was intended to broaden access to health insurance, reduce or constrain the growth of healthcare spending, enhance remedies against fraud and abuse, add transparency requirements for the healthcare and health insurance industries, impose new taxes and fees on the health industry and impose additional health policy reforms. There have been significant ongoing judicial, administrative, executive and legislative efforts to modify or eliminate the Affordable Care Act, and the Affordable Care Act has also been subject to challenges in the courts. Refer to the section in our Annual Report entitled "Business — Government Regulation — Healthcare Reform."

 Further changes to and under the Affordable Care Act remain possible. It is unknown what form any such changes or any law proposed to replace the Affordable Care Act would take, and how or whether it may affect our business in the future. We expect that changes to the Affordable Care Act, the Medicare and Medicaid programs, changes allowing the federal government to directly negotiate drug prices and changes stemming from other healthcare reform measures, especially with regard to healthcare access, financing or other legislation in individual states, could have a material adverse effect on the healthcare industry.

 Any reduction in reimbursement from Medicare, Medicaid, or other government programs may result in a similar reduction in payments from private payors. The implementation of cost containment measures or other healthcare reforms may prevent us from being able to generate revenue and maintain profitability.

 Social issues around the abuse of opioids, including law enforcement concerns over diversion of opioids and regulatory and enforcement efforts to combat abuse, could decrease the potential market for our products and may adversely impact external investor perceptions of our business.

 Law enforcement and regulatory agencies may apply policies and guidelines that seek to limit the availability or use of opioids. Such efforts may inhibit our ability to continue to commercialize our products.

 Aggressive enforcement and unfavorable publicity regarding, for example, the use or misuse of oxycodone or other opioid drugs; the limitations of abuse-resistant formulations; the ability of people who abuse drugs to discover previously unknown ways to abuse opioid drugs, including Xtampza ER, the Nucynta Products and Belbuca; public inquiries and investigations into prescription drug abuse; litigation; or regulatory activity regarding sales, marketing, distribution or storage of opioid drugs could have a material adverse effect on our reputation. Such negative publicity could reduce the potential size of the market for our products, decrease the revenues we are able to generate from their sale and adversely impact external investor perceptions of our business. Similarly, to the extent opioid abuse becomes less prevalent or less urgent of a public health issue, regulators and third-party payors may not be willing to pay a premium for abuse-deterrent formulations of opioids.

 Federal laws have been enacted to address the national epidemics of prescription opioid abuse and illicit opioid use, including the Comprehensive Addiction and Recovery Act and the Substance Use-Disorder Prevention that Promotes Opioid Recovery and Treatment for Patients and Communities Act. These laws are described in more detail in our Annual Report under the caption "Business — Government Regulation — DEA and Opioid Regulation."

 If the FDA or other applicable regulatory authorities approve generic products with claims that compete with our products, our sales could decline.

 Once an NDA, including a Section 505(b)(2) application, is approved, the product covered thereby becomes a "listed drug" which can, in turn, be cited by potential competitors in support of approval of an ANDA. The Federal Food, Drug, and Cosmetic Act, FDA regulations and other applicable regulations and policies provide incentives to manufacturers to

 create modified, non-infringing versions of a drug to facilitate the approval of an ANDA or other application for generic substitutes. These generic equivalents would be significantly less costly than ours to bring to market and companies that produce generic equivalents are generally able to offer their products at lower prices. Additionally, under FDORA, FDA will assign therapeutic equivalence ratings for certain prescription drugs approved via the Section 505(b)(2) NDA pathway with respect to other approved drug products and it is unclear how assignment of these ratings will impact the market opportunity for our products. Thus, after the introduction of a generic competitor, a significant percentage of the sales of any branded product are typically lost to the generic product. Accordingly, competition from generic equivalents to our products would substantially limit our ability to generate revenues and therefore, to obtain a return on the investments we have made in our products. In the past, we have initiated litigation with generic competitors that have filed Paragraph IV Certifications challenging certain of our patents. While we have entered into settlement agreements with certain competitors, we are currently pursuing litigation to defend against Paragraph IV Certifications related to Belbuca. Refer to Note 13, Commitments and Contingencies, to our consolidated financial statements included in Part IV of this Annual Report on Form 10-K. We believe that we will continue to be subject to ANDA-related litigation, which can be costly and distracting and has the potential to impact the long-term value of our products.

 We may seek FDA pediatric exclusivity for some of our products. Pediatric exclusivity, if granted, adds six months of patent term and marketing exclusivity to existing exclusivity periods for all formulations, dosage forms, and indications for the active moiety, provided that at the time pediatric exclusivity is granted there is not less than nine months of term remaining. The regulatory exclusivity period for Nucynta IR in the United States has been extended through July 3, 2026, following the grant of New Patient Population exclusivity in pediatrics by the FDA in August 2023 based on data from pediatric trials which were submitted in response to the FDA's Pediatric Written Request to evaluate the use of Nucynta as a treatment for pain in pediatric patients aged 6 years and older. If FDA deems these data to be responsive to its Written Request, the exclusivity of the entire Nucynta franchise could be extended an additional six months, to December 2025 for Nucynta ER and January 2027 for Nucynta IR. However, there is no guarantee that FDA will agree that the Written Request has been satisfied and that we will receive this additional exclusivity, or that we will maintain such exclusivity, if granted.

 In November 2017, the FDA issued a final guidance to assist industry in the development of generic versions of approved opioids with abuse-deterrent formulations, including recommendations about the types of studies that companies should conduct to demonstrate that the generic drug is no less abuse-deterrent than its brand-name counterpart. In the second half of 2018, the FDA posted three revised product-specific guidances related to generic abuse-deterrent opioid formulations, including one guidance specifically relating to Xtampza ER, which recommend specific in vivo studies and in vitro study considerations for abuse deterrence evaluations. These guidances are part of the FDA's wider focus on assisting developers of generic abuse-deterrent formulations in navigating the regulatory path to market more quickly. Earlier market entry of generic abuse-deterrent formulations could have a material adverse effect on our business.

 Risks Related to Our Dependence on Third Parties

 If the third-party manufacturers of our products fail to devote sufficient time and resources to these products, or their performance is substandard, and/or we encounter challenges with our dedicated manufacturing suite at our third-party manufacturer's site for the manufacturing of Xtampza ER, our costs may be higher than expected and could have a material adverse effect on our business.

 We do not own any manufacturing facilities in drug development and commercial manufacturing. We currently have no plans to build our own clinical or commercial scale manufacturing facility and do not have the resources and expertise to manufacture and test, on a commercial scale, the technical performance of our products. We currently rely, and expect to continue to rely, on a limited number of experienced personnel and contract manufacturers for our products, as well as other vendors to formulate, test, supply, store and distribute our products, and we control only certain aspects of their activities.

 In 2020, we completed the build-out of a dedicated manufacturing suite for Xtampza ER at a site operated by our contract manufacturing organization, Patheon, part of Thermo Fisher Scientific. This facility requires the maintenance of regulatory approvals and other costs, all of which we absorb. We cannot guarantee that we will be able to continue to leverage the dedicated manufacturing suite in a profitable manner. If the demand for Xtampza ER and any future related products never meets our expectations and forecasts, or if we do not produce the output we plan, we may not be able to realize the return on investment we anticipated, which would have a negative impact on our financial condition and results of operations.

 We have also transitioned commercial manufacturing for Nucynta ER from Janssen to Patheon. While we were successful in our regulatory approval and validation activities, we could encounter issues in obtaining commercial supply from Patheon's facility due to technical problems or challenges obtaining adequate and/or timely DEA procurement quota.

 Although we have identified alternate sources for these services, it would be time-consuming, and require us to incur additional costs, to qualify these sources. Our reliance on a limited number of vendors and, in particular, Patheon as our single manufacturer for Xtampza ER and Nucynta ER, exposes us to the following risks, any of which could impact commercialization of our products, result in higher costs, or deprive us of potential product revenues:

 Our contract manufacturer, or other third parties we rely on, may encounter difficulties in achieving the volume of production needed to satisfy commercial demand, may experience technical issues that impact quality or compliance with applicable and strictly enforced regulations governing the manufacture of pharmaceutical products, may be affected by natural disasters that interrupt or prevent manufacturing of our products, may experience shortages of qualified personnel to adequately staff production operations, may experience shortages of raw materials and may have difficulties finding replacement parts or equipment;

 Our contract manufacturer could default on their agreement with us to meet our requirements for commercial supplies of our products and/or we could experience technical problems in the operation of our dedicated manufacturing suite;

 The use of alternate manufacturers may be difficult because the number of potential manufacturers that have the necessary governmental licenses to produce narcotic products is limited. Additionally, the FDA and the DEA must approve any alternative manufacturer of our products, before we may use the alternative manufacturer to produce commercial supplies;

 It may be difficult or impossible for us to find a replacement manufacturer on acceptable terms quickly, or at all. Our contract manufacturer and vendors may not perform as agreed or may not remain in the contract manufacturing business for the time required to produce, store and distribute our products successfully; and

 If our contract manufacturer were to terminate our arrangement or fail to meet our commercial manufacturing demands, we may be forced to delay our development and commercial programs.

 Failure to obtain the necessary active pharmaceutical ingredients, excipients or components necessary to manufacture our products could adversely affect our ability to continue to commercialize our products, which could in turn adversely affect our results of operations and financial condition. Likewise, the inability of any of our sole or limited suppliers to provide components that meet our specifications and requirements could adversely impact our ability to manufacture our products. In addition, DEA regulations, through the quota procurement process, limit the amount of DEA-controlled active pharmaceutical ingredient we have available for manufacture. Consequently, we are limited in our ability to maintain an appreciable safety stock of finished drug product.

 Our reliance on third parties reduces our control over our manufacturing and commercialization activities but does not relieve us of our responsibility to ensure compliance with all required legal, regulatory and scientific standards. The FDA and other regulatory authorities require our products to be manufactured according to cGMP. Any failure by our third-party manufacturer to comply with cGMP or failure to scale up manufacturing processes, including any failure to deliver sufficient quantities of products in a timely manner, could lead to inspection deficiencies, a shortage of commercial product, or potential products liability exposure for any noncompliant distributed products. Such failure could also be the basis for the FDA to issue a warning or untitled letter, withdraw approvals for products previously granted to us, or take other regulatory or legal action, including recall or seizure, total or partial suspension of production, refusal to approve pending applications or supplemental applications, detention of product, refusal to permit the import or export of products, injunction, imposing civil penalties or pursuing criminal prosecution.

 Any stock out, or failure to obtain sufficient supplies of any of our products, or the necessary active pharmaceutical ingredients, excipients or components necessary to manufacture each of our products, could adversely affect our ability to commercialize such products, which could in turn adversely affect our results of operations and financial condition.

 Because we currently rely on a sole supplier or limited number of suppliers to manufacture the active pharmaceutical ingredient of our products, any production problems with any of these suppliers could have a material adverse effect on us.

 We currently rely on a sole supplier or limited number of suppliers to manufacture the active pharmaceutical ingredients of our products. We contract with these suppliers for commercial supply to manufacture our products. Further, our suppliers for Xtampza ER and the Nucynta Products active pharmaceutical ingredients also supply our primary competitor in the extended-release oxycodone space, Purdue. Identifying alternate sources of active pharmaceutical ingredients for our products is generally time-consuming and costly. Any changes that our suppliers make to the respective drug substance raw materials, intermediates, or manufacturing processes would introduce technical and regulatory risks to our downstream drug product supply. If our suppliers were to terminate an arrangement for an active pharmaceutical ingredient, or fail to meet our supply needs (including as a result of any disruptions in personnel or the global supply chain), we might incur substantial costs and be forced to delay our development or commercialization programs. Any such delay could have a material adverse effect on our business.

 Global supply chain disruptions and shortages may limit manufacturing and commercial supply of our products and have a material impact on our business.

 There are currently global supply chain disruptions and shortages caused by a variety of factors, including geopolitical turmoil, such as the Ukrainian War and current conflict in Israel and Gaza. While we and our suppliers are still able to receive sufficient inventory of the key materials and components needed, we could experience pressure on our supply chain, including shipping delays, higher prices from suppliers, and reduced availability of materials, including excipients and packaging components. To date, supply chain pressure has not had a material impact on our results of operations. However, if these disruptions and shortages continue, we may in the future experience a material interruption to our supply chain. Such an interruption could have a material adverse impact on our business, including but not limited to, our ability to timely manufacture and distribute our products.

 Manufacturing issues may arise that could increase product and regulatory approval costs, delay commercialization or limit commercial supply.

 In our current commercial manufacturing operations, and as we scale up manufacturing of our products and conduct required stability testing, we may encounter product, packaging, equipment and process-related issues that may require refinement or resolution in order to successfully commercialize our products. In the future, we may identify impurities, which could result in increased scrutiny by regulatory authorities, delays in our clinical programs and regulatory approval, increases in our operating expenses, failure to obtain or maintain approval or limitations in our commercial supply.

 We depend on wholesale pharmaceutical distributors for retail distribution of our products; if we lose any of our significant wholesale pharmaceutical distributors or their distribution network is disrupted, our financial condition and results of operations may be adversely affected.

 A significant percentage of our product shipments are to a limited number of independent wholesale pharmaceutical distributors. Three of our wholesale pharmaceutical distributors represented greater than 90% of our product shipments for the year ended December 31, 2023. Our loss of any of these wholesale pharmaceutical distributors' accounts, or a material reduction in their purchases or a significant disruption to transportation infrastructure or other means of distribution of our products, could have a material adverse effect on our business, results of operations, financial condition and prospects. The significance of each wholesale pharmaceutical distributor account to our business adversely impacts our ability to negotiate favorable commercial terms with each such distributor, and as a result, we may be forced to accept terms that adversely impact our results of operations.

 In addition, these wholesaler customers comprise a significant part of the distribution network for pharmaceutical products in the United States. This distribution network has undergone, and may continue to undergo, significant consolidation marked by mergers and acquisitions. As a result, a small number of large wholesale distributors control a significant share of the market. Consolidation of drug wholesalers has increased, and may continue to increase, competitive and pricing pressures on pharmaceutical products. We cannot guarantee that we can manage these pricing pressures or that wholesaler purchases will not fluctuate unexpectedly from period to period.

 Certain of our opioid products are subject to post-marketing requirements or commitments, which may, in some cases, not be capable of timely or satisfactory completion without participation in consortia over which we have limited control.

 For certain of our products, we are subject to post-marketing requirements to conduct epidemiological studies and clinical trials, or, in some cases, to conduct post-marketing surveillance or observational studies to gather additional information about our products. For our opioid products, we generally intend to fulfill our PMRs by virtue of our participation in the Opioid PMR Consortium ("OPC"). Although we retain discretion in how to discharge such PMRs, the scale and scope of the studies required by the FDA make it cost prohibitive to discharge these requirements other than by joining the OPC that was formed to conduct them. We are a member of the OPC and engage in decision-making as a member of that organization, but do not have a majority. If the OPC fails to conduct sufficiently rigorous studies or is unable to achieve the patient enrollment or other requirements established by the FDA, we may be unable to satisfy our PMRs and the FDA may choose to withdraw or otherwise restrict its approval of our opioid products. Additionally, there may be certain PMRs or post-marketing commitments that we fulfill on our own for our products, including via the conduct of post-marketing surveillance or observational studies. If such studies lead to the discovery of adverse findings regarding the safety or benefit profiles of our products, then the FDA may choose to withdraw or otherwise restrict the approval of our products or the FDA or we may determine that labeling changes are warranted based on their finding. Such withdrawal or restriction or labeling changes for our products would have an adverse impact on our business and financial condition.

 Risks Related to Our Business and Strategy

 We may not realize all the anticipated benefits from our future acquisitions, and we may be unable to successfully integrate future acquisitions.
 Our growth strategy will, in part, rely on acquisitions. We must plan and manage acquisitions effectively to achieve revenue growth and maintain profitability in our evolving market. We may not realize all the anticipated benefits from our future acquisitions, such as increased earnings, cost savings and revenue enhancements, for various reasons, including difficulties integrating operations and personnel, higher than expected acquisition and operating costs or other difficulties, inexperience with operating in new geographic regions, unknown liabilities, inaccurate reserve estimates and fluctuations in market prices.

 In addition, integrating acquired businesses and properties involves a number of special risks and unforeseen difficulties can arise in integrating operations and systems and in retaining and assimilating employees. These difficulties include, among other things:

 operating a larger organization;

 coordinating geographically disparate organizations, systems, and facilities;

 integrating corporate, technological, and administrative functions;

 diverting management's attention from regular business concerns;

 diverting financial resources away from existing operations;

 increasing our indebtedness; and

 incurring potential environmental or regulatory liabilities and title problems.

 Any of these or other similar risks could lead to potential adverse short-term or long-term effects on our operating results. The process of integrating our operations could cause an interruption of, or loss of momentum in, the activities of our business. Members of our management may be required to devote considerable amounts of time to this integration process, which decreases the time they have to manage our business. If our management is not able to effectively manage the integration process, or if any business activities are interrupted as a result of the integration process, our business could suffer.

 Our business may be adversely affected by certain events or circumstances outside our control, including macroeconomic conditions and geopolitical turmoil.

 Events or circumstances outside of our control, including macroeconomic conditions such as recession or depression, inflation, and declines in consumer-spending could result in reduced demand for our products. An economic downturn could result in business closures, higher levels of unemployment, or declines in consumer disposable income which

 could have an impact on the number of patients seeking and receiving treatment for conditions that might otherwise result in the prescription of our products, as patients may make efforts to avoid or postpone seeking non-essential medical care to allocate their resources to other priorities or essential items. These circumstances, in addition to the impact of geopolitical turmoil, such as the ongoing Ukrainian War and current conflict in Israel and Gaza (including any escalation or expansion), social unrest, political instability in the United States and elsewhere, terrorism, cyberwarfare or other acts of war, may result in reduced demand for our products and negatively impact our sales, results of operations, and liquidity.

 Security breaches and other disruptions to our, or our vendors', information technology systems may compromise our information and expose us to liability that could adversely impact our financial condition, operations, and reputation.

 We, our collaborators, third-party providers, distributors, customers and other contractors utilize information technology systems and networks ("Systems") to transmit, store and otherwise process electronic data in connection with our business activities, including our supply chain processes, operations and communications including, in some cases, our business proprietary information, and Electronic Data Interchange ("EDI") on purchase orders, invoices, chargebacks, among other things. Our Systems, along with those of the third parties whom we rely on to process confidential and sensitive data in a variety of contexts, are potentially vulnerable to a variety of evolving threats that may expose this data to unauthorized persons or otherwise compromise its integrity. These threats may include, but are not limited to, social-engineering attacks (including through phishing attacks), business email compromise, online and offline fraud, malicious code (such as viruses and worms), malware (including as a result of advanced persistent threat intrusions), denial-of-service attacks, access attacks (such as credential stuffing), personnel misconduct or error, ransomware attacks, supply-chain attacks, software bugs, server malfunctions, software or hardware failures, loss of data or other information technology assets, adware, telecommunications failures, earthquakes, fires, floods, and other similar threats.

 We may expend significant resources to try to protect against these threats to our Systems. Certain data privacy and security laws, as well as industry best practice standards, may require us to implement and maintain security measures. While we have implemented security measures designed to protect our Systems and confidential and sensitive data, there can be no assurance that these measures will be effective. Threat actors and their techniques change frequently, are often sophisticated in nature, and may not be detected until after a security incident has occurred. If we, or a third party upon whom we rely, experience a security incident or are perceived to have experienced a security incident, we may experience adverse consequences. These consequences may include: government enforcement actions (for example, investigations, fines, penalties, audits, and inspections); additional reporting requirements and/or oversight; restrictions on processing sensitive data (including personal data); litigation (including class claims); indemnification obligations; negative publicity; reputational harm; monetary fund diversions; interruptions in our operations (including availability of data); financial loss; and other similar harms. Further, our insurance coverage may not be adequate or sufficient in type or amount to protect us from or to mitigate liabilities arising out of our privacy and security practices.

 Litigation or regulatory action regarding opioid medications could negatively affect our business.

 Beginning in 2018, lawsuits alleging damages related to opioids have been filed naming us as a defendant along with other manufacturers of prescription opioid medications. These lawsuits, filed in multiple jurisdictions, are brought by various local governments as well as private claimants, against various manufacturers, distributors and retail pharmacies. These lawsuits generally allege that we had engaged in improper marketing practices related to Xtampza ER and the Nucynta Products. In March 2022, we entered into a Master Settlement Agreement resolving 27 pending opioid-related lawsuits brought against us by cities, counties, and other subdivisions in the United States. As part of the Master Settlement Agreement, we paid $2.75 million to the plaintiffs and the cases were dismissed, with prejudice. In late March 2023, three new cases were filed in three federal courts, naming us as one of numerous defendants, from which we have been dismissed.

 Certain governmental and regulatory agencies are focused on the abuse of opioid medications, a concern we share, and we have received Civil Investigative Demands or subpoenas from four state attorneys general investigating our sales and marketing of opioids and seeking documents relating to the manufacture, marketing and sale of opioid medications. In December 2021, we entered into an Assurance of Discontinuance with the Massachusetts Attorney General pursuant to which we provided certain assurances and agreed to pay certain of the Massachusetts Attorney General's costs of investigation, in exchange for closure of the investigation and a release of claims pertaining to the subject matter of the investigation. We are cooperating fully in the open investigations. Managing litigation and responding to governmental investigations is costly and may involve a significant diversion of management attention. Such proceedings are

 unpredictable and may develop over lengthy periods of time. An adverse resolution of any of these lawsuits or investigations may involve injunctive relief or substantial monetary penalties, either or both of which could have a material adverse effect on our reputation, business, results of operations and cash flows.

 We face substantial competition from other biotechnology and pharmaceutical companies, which may result in others discovering, developing or commercializing products more successfully than we do.

 Competition in the pain and opioid market is intense. Our competitors include major multinational pharmaceutical companies, biotechnology companies and universities and other research institutions. Our products compete with oral opioids, transdermal opioids, local anesthetic patches, stimulants and implantable and external infusion pumps that can be used for infusion of opioids and local anesthetics. Products of these types are marketed by Actavis, Endo, Mallinckrodt, Purdue, Teva, and others. Some of these current and potential future competitors may be addressing the same therapeutic areas or indications as we are. Many of our current and potential future competitors have significantly greater research and development capabilities than we do, have substantially more marketing, manufacturing, financial, technical, human and managerial resources than we do, and have more institutional experience than we do. Our competitors have developed or may develop technologies that are, or may be, the basis for competitive products that are safer, more effective or less costly than our products. Moreover, oral medications, transdermal drug delivery systems, such as drug patches, injectable products and implantable drug delivery devices are currently available treatments for chronic pain, are widely accepted in the medical community and have a long history of use. These treatments will compete with our products and the established use of these competitive products may limit the potential for our products to receive widespread acceptance.

 Commercial sales of our products and any products we acquire, may expose us to expensive product liability claims, and we may not be able to maintain product liability insurance on reasonable terms or at all.

 We currently carry product liability insurance. Product liability claims may be brought against us by patients; healthcare providers; or others using, administering or selling our products. If we cannot successfully defend ourselves against claims that our products caused injuries, we could incur substantial liabilities. We may not be able to maintain insurance coverage at a reasonable cost or in an amount adequate to satisfy any liability that may arise. Regardless of merit or eventual outcome, liability claims may cause us to incur significant costs to defend the litigation.

 Our relationships with customers and payors are subject to applicable anti-kickback, fraud and abuse, transparency, and other healthcare laws and regulations, which could expose us to criminal sanctions, civil penalties, exclusion from government healthcare programs, contractual damages, reputational harm, administrative burdens, and diminished profits and future earnings.

 Healthcare providers, physicians and payors play a primary role in the recommendation and prescription of our products. Our arrangements with payors and customers may expose us to broadly applicable fraud and abuse and other healthcare laws and regulations that may constrain the business or financial arrangements and relationships through which we market, sell and distribute our products. Even though we do not and will not control referrals of healthcare services or bill Medicare, Medicaid or other third-party payors directly, we may provide reimbursement guidance and support regarding our products to our customers and patients. Federal and state healthcare laws and regulations pertaining to fraud and abuse and patients' rights are and will be applicable to our business. If a government authority were to conclude that we provided improper advice to our customers and/or encouraged the submission of false claims for reimbursement, we could face action by government authorities. If our operations are found to be in violation of any of these laws or any other governmental regulations that may apply to us, we may be subject to significant civil, criminal and administrative penalties, damages, fines, imprisonment, exclusion from participation in government funded healthcare programs, such as Medicare and Medicaid, and the curtailment or restructuring of our operations.

 We or the third parties upon whom we depend may be adversely affected by natural disasters and/or health epidemics, and our business continuity and disaster recovery plans may not adequately protect us from a serious disaster.

 Natural disasters could severely disrupt our operations, and have a material adverse effect on our business, results of operations, financial condition and prospects. If a natural disaster, power outage, health epidemic or other event occurred that prevented us from using all or a significant portion of our facilities, that damaged critical infrastructure, such as the manufacturing facilities of our third-party contract manufacturers, or that otherwise disrupted operations, it might

 become difficult or, in certain cases, impossible for us to continue our business, and any disruption could last for a substantial period of time.

 The disaster recovery and business continuity plans we have in place, and the technology that we may rely upon to implement such plans, may prove inadequate in the event of a serious disaster or similar event. We may incur substantial expenses as a result of the limited nature of our disaster recovery and business continuity plans, which could have a material adverse effect on our business, financial condition and results of operation.

 Risks Related to Our Common Stock

 The price of our common stock may be volatile and you may lose all or part of your investment.

 The market price of our common stock is highly volatile and may be subject to wide fluctuations in response to numerous factors described in these "Risk Factors," some of which are beyond our control. The stock market in general, and pharmaceutical and biotechnology companies in particular, have experienced extreme price and volume fluctuations. Broad market and industry factors may negatively affect the market price of our common stock, regardless of our business model, prospects or actual operating performance. The realization of any of these risks, or any of a broad range of other risks discussed in this report, could have a material adverse effect on the market price of our common stock.

 We are subject to anti-takeover provisions in our second amended and restated articles of incorporation and amended and restated bylaws and under Virginia law that could delay or prevent an acquisition of our company, even if the acquisition would be beneficial to our shareholders.

 Certain provisions of Virginia law, the state in which we are incorporated, and our second amended and restated articles of incorporation and amended and restated bylaws could hamper a third party's acquisition of us, or discourage a third party from attempting to acquire control of us. These provisions could limit the price that certain investors might be willing to pay in the future for shares of our common stock. In addition, these provisions make it more difficult for our shareholders to remove our Board of Directors or management or elect new directors to our Board of Directors.

 If we fail to maintain an effective system of internal control over financial reporting, we may not be able to report our financial condition, results of operations or cash flows accurately, which may adversely affect investor confidence in us and, as a result, the value of our common stock.

 The Sarbanes-Oxley Act requires, among other things, that we maintain effective internal control over financial reporting. We are required, under Section 404 of the Sarbanes-Oxley Act, to furnish a report by management on, among other things, the effectiveness of our internal control over financial reporting. If we identify one or more material weaknesses in our internal control over financial reporting, we will be unable to assert that our internal control over financial reporting is effective. We cannot assure you that there will not be material weaknesses or significant deficiencies in our internal control over financial reporting in the future. Any failure to maintain internal control over financial reporting could severely inhibit our ability to accurately report our financial condition, results of operations or cash flows. Further, we could lose investor confidence in the accuracy and completeness of our financial reports, the market price of our common stock could decline, and we could be subject to sanctions or investigations by NASDAQ, the SEC or other regulatory authorities. Failure to remedy any material weakness in our internal control over financial reporting, or to implement or maintain other effective control systems required of public companies, could also restrict our future access to capital markets.

 Sales of our common stock in the public market, either by us or by our current shareholders, or the perception that these sales could occur, could cause a decline in the market price of our securities. Moreover, the exercise of options and other issuances of shares of common stock or securities convertible into or exercisable for shares of common stock will dilute your ownership interests and may adversely affect the future market price of our common stock.

 Sales of our common stock in the public market, either by us or by our current shareholders, or the perception that these sales could occur, could cause a decline in the market price of our securities. All of the shares of our common stock held by our current shareholders may be immediately eligible for resale in the open market either in compliance with an exemption under Rule 144 promulgated under the Securities Act, or pursuant to an effective resale registration statement that we have previously filed with the SEC. Such sales, along with any other market transactions, could adversely affect the market price of our common stock. As of December 31, 2023, there were outstanding options to purchase an

 aggregate of 1,176,750 shares of our common stock at a weighted average exercise price of $19.48 per share, of which options to purchase 1,158,209 shares of our common stock were then exercisable. The exercise of options at prices below the market price of our common stock could adversely affect the price of shares of our common stock. Additional dilution may result from the issuance of shares of our common stock in connection with collaborations or manufacturing arrangements or in connection with other financing efforts.

 There can be no assurance that we will repurchase additional shares of our common stock at all or at favorable prices.

 In August 2021, our Board of Directors authorized a repurchase program for the repurchase of up to $100 million of shares of our common stock at any time or times through December 31, 2022 (the "Prior Repurchase Program"). We repurchased $61.9 million of shares pursuant to the Prior Repurchase Program prior to its expiration on December 31, 2022. In January 2023, our Board of Directors authorized a share repurchase program for the repurchase of up to $100.0 million of shares of our common stock through December 31, 2023 (the "2023 Repurchase Program"). We repurchased $75.0 million of shares pursuant to the 2023 Repurchase Program prior to its expiration on December 31, 2023.
 In January 2024, our Board of Directors authorized a new share repurchase program for the repurchase of up to $150.0 million of shares of our common stock through June 30, 2025 (the "2024-2025 Repurchase Program"). The 2024-2025 Repurchase Program permits us to effect repurchases through a variety of methods, including open-market purchases (including pursuant to a trading plan adopted in accordance with Rule 10b5-1 of the Exchange Act), privately negotiated transactions, or otherwise in compliance with Rule 10b-18 of the Exchange Act. Share repurchases under the 2024-2025 Repurchase Program will depend upon, among other factors, our cash balances and potential future capital requirements, our results of operations and financial condition, the price of our common stock on the NASDAQ Global Select Market, and other factors that we may deem relevant. We can provide no assurance that we will continue to repurchase shares of our common stock at favorable prices, if at all.
 Item 1B. Unresolved Staff Comments

 Not applicable.

 Item 1C. Cybersecurity

 Risk Management and Strategy

 We maintain a cybersecurity program designed to assess, identify, and mitigate risks from cybersecurity threats. This program is informed by the five elements of the National Institute of Standards and Technology framework: identify, protect, detect, respond, and recover. We utilize various methods to achieve these objectives including but not limited to company-wide policies and operating procedures, periodic testing, systems monitoring, patch management, and mandatory ongoing employee trainings. Additionally, we partner with third-party experts to conduct periodic penetration tests and to evaluate our information technology infrastructure for vulnerabilities. We also evaluate cybersecurity risks associated with third-party vendors that provide the hosted applications we use in our financial close process through review of their System and Organization Controls ("SOC") 1 reports at least annually. We continue to invest in our information technology infrastructure and cybersecurity program to strengthen our ability to protect the confidentiality, integrity, and availability of our data and the security of our information systems.

 In addition to our cybersecurity program, we assess cybersecurity risks as part of our overall risk management processes, primarily through our annual Enterprise Risk Assessment. Our Enterprise Risk Assessment surveys various employees and leaders throughout our organization with the goal of evaluating our risk landscape, enhancing our overall understanding of risks to our business, and ultimately managing and/or mitigating identified risks. We assess various risks, including cybersecurity related risks, based on the likelihood of an incident occurring, impact to our organization if an incident occurred, and the level of internal control we currently have over the risk. The results are analyzed to identify vulnerabilities and then risk management/mitigation plans are designed, implemented, and evaluated for effectiveness.

 If a cybersecurity incident were to occur, we would implement our incident response plan in an effort to contain and mitigate the threat. As part of our incident response plan, our Cybersecurity Incident Response Team (a cross-functional taskforce comprised of senior representatives), would convene to assess the potential impact to our business, including financial reporting requirements and legal implications.

 We, like other companies in our industry, face a number of cybersecurity risks in connection with our business. Although such risks have not materially affected us, including our business strategy, results of operations or financial condition, to date, we and/or our vendors have, from time to time, experienced threats to, or security incidents, related to our data and systems or that had the potential to otherwise impact our business. For more information about the cybersecurity risks we face, refer to "Item 1A. Risk Factors."

 Governance

 One of the key functions of our Board is informed oversight of our risk management process. Our Board administers this oversight function directly through our Board as a whole, as well as through various standing committees of our Board that address risks inherent in their respective areas of oversight. Our Audit Committee, a subcommittee of our Board, is responsible for the oversight of risks from cybersecurity threats. The Audit Committee receives updates at least quarterly from our Head of Information Technology regarding developments in our information technology infrastructure and cybersecurity program. This includes updates, as appropriate, on key information technology initiatives, new and existing cybersecurity risks, how management is managing those risks, and, if any, material cybersecurity incidents and the impact to our business and performance.

 At the management level, our Head of Information Technology is responsible for assessing and managing risks from cybersecurity threats through oversight of our information technology infrastructure and cybersecurity program. The individual occupying this role has over 20 years of experience in information technology and cybersecurity and has served in senior cybersecurity leadership positions for over 10 years. Thus, we believe our Head of Information Technology is well-qualified to serve in this role. Our Head of Information Technology conducts bi-weekly meetings with our information technology department to remain apprised of cybersecurity matters. If a cybersecurity incident were to occur, our Head of Information Technology may inform our Executive Vice President and Head of Technological Operations and/or Audit Committee, depending on the severity of the incident in accordance with the established severity and response matrix as defined in our incident response plan.

 Item 2. Properties

 Our corporate headquarters are located in Stoughton, Massachusetts, where we lease 50,678 square feet of office and laboratory space. We use this facility for commercial and general and administrative purposes. The corporate headquarters lease expires in July 2029 and the lease term may be extended for two additional five-year terms at our election.

 We believe that our existing facilities are adequate for our current and expected future needs. We may seek to negotiate new leases or evaluate additional or alternate space for our operations. We believe that appropriate alternative space is readily available on commercially reasonable terms.

 Item 3. Legal Proceedings

 Discussion of legal matters is incorporated by reference from Note 13, Commitments and Contingencies, to the Consolidated Financial Statements included in Item 8 of Part II of this Annual Report on Form 10-K.

 Item 4. Mine Safety Disclosures

 Not applicable.

 Item 5. Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
 Market Information
 Our common stock has been publicly traded on the NASDAQ Global Select Market under the symbol "COLL" since May 7, 2015. Prior to May 7, 2015, there was no public trading market for our common stock.

 Holders
 As of January 31, 2024, there were 12 holders of record of our common stock. The number of holders of record does not include beneficial owners whose shares are held by nominees in street name.
 Dividends
 We have never declared or paid cash dividends on our common stock, and we do not expect to pay any cash dividends on our common stock in the foreseeable future.
 Stock Performance Graph
 The following graph sets forth the Company's total cumulative shareholder return as compared to the NASDAQ Composite Index and the NASDAQ Biotechnology Index for the 5-year period beginning on December 31, 2018 through December 31, 2023.
 Total cumulative shareholder return assumes an investment of $100.00 in cash in our common stock at the beginning of the 5-year period compared to the same investment in the NASDAQ Composite Index and the NASDAQ Biotechnology Index. Such returns are based on historical results and are not intended to suggest future performance. Data for the NASDAQ Composite Index and NASDAQ Biotechnology Index assume reinvestment of dividends, however no dividends have been declared on our common stock to date.

 $100 investment in stock or index

 2018

 2023

 Collegium Pharmaceutical, Inc. (COLL)

 $

 100.00

 $

 179.27

 NASDAQ Composite Index (IXIC)

 $

 100.00

 $

 226.24

 NASDAQ Biotechnology Index (NBI)

 $

 100.00

 $

 143.60

 The performance graph and related information shall not be deemed to be "soliciting material" or to be "filed" with the SEC, nor shall such information be incorporated by reference into any future filing under the Securities Act, except to the extent that we specifically incorporate it by reference into such filing.
 Recent Sales of Unregistered Securities
 There were no unregistered sales of equity securities during the period covered by this Form 10-K.

 Purchases of Equity Securities by the Issuer and Affiliated Purchasers

 The following table sets forth shares of common stock repurchased under our repurchase program authorized by our Board of Directors in January 2023 (the "2023 Repurchase Program"), as well as shares transferred to us from employees in satisfaction of minimum tax withholding obligations associated with the vesting of performance share units and restricted stock units during the three months ended December 31, 2023:

 Period

 Total number of shares purchased

 Average Price Paid per Share

 Total number of shares purchased as part of publicly announced plans or programs (1)

 Maximum approximate dollar value of Shares that may yet be purchased under the plans or programs

 October 1, 2023 through October 31, 2023

 467,247

 $

 23.10

 462,442

 $

 50,000

 November 1, 2023 through November 30, 2023

 867,532

 27.09

 865,426

 30,000

 December 1, 2023 through December 31, 2023

 59,791

 27.12

 57,349

 25,000

 Total

 1,394,570

 (2)

 $

 25.75

 1,385,217

 (2)

 $

 25,000

 (1)
 The 2023 Repurchase Program was announced on January 4, 2023. The 2023 Repurchase Program provided for the repurchase of up to $100.0 million of outstanding shares of our common stock at any time or times through December 31, 2023. The 2023 Repurchase Program expired on December 31, 2023 with approximately $25.0 million available for repurchase at the time of expiration.

 (2)
 The difference, if any, between the total number of shares purchased and the total number of shares purchased as part of a publicly announced program relates to common stock withheld by us for employees to satisfy their tax withholding obligations arising upon the vesting of performance share units and restricted stock units granted under our Amended and Restated 2014 Stock Incentive Plan.

 Item 6. [Reserved]

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

 You should read the following discussion and analysis of our financial condition and results of operations together with our consolidated financial statements and related notes appearing elsewhere in this Form 10 - K. The following discussion contains forward-looking statements that involve risks, uncertainties and assumptions. Our actual results and the timing of certain events could differ materially from those anticipated in these forward-looking statements as a result of many factors. We discuss factors that we believe could cause or contribute to these differences below and elsewhere in this Form 10-K, including those set forth under "Forward-looking Statements" and "Risk Factors," as revised and supplemented by those risks described from time to time in other reports which we file with the SEC.
 Overview

 We are building a leading, diversified specialty pharmaceutical company committed to improving the lives of people living with serious medical conditions. We commercialize our pain portfolio, consisting of Xtampza ER, Nucynta ER and Nucynta IR (collectively the "Nucynta Products"), Belbuca, and Symproic, in the United States.

 Xtampza ER, an abuse-deterrent, oral formulation of oxycodone, was approved by the United States Food and Drug Administration ("FDA") in April 2016 for the management of severe and persistent pain that requires an extended treatment period with a daily opioid analgesic and for which alternative treatment options are inadequate. We commercially launched Xtampza ER in June 2016.

 The Nucynta Products are extended-release ("ER") and immediate-release ("IR") formulations of tapentadol. Nucynta ER is indicated for the management of severe and persistent pain that requires an extended treatment period with a daily opioid analgesic, including neuropathic pain associated with diabetic peripheral neuropathy in adults, and for which alternate treatment options are inadequate. Nucynta IR is indicated for the management of acute pain severe enough to require an opioid analgesic and for which alternative treatments are inadequate in adults and pediatric patients aged 6 years and older with a body weight of at least 40 kg. We began shipping and recognizing product sales on the Nucynta Products in January 2018 and began marketing the Nucynta Products in February 2018. In August 2023, the FDA granted New Patient Population exclusivity in pediatrics for Nucynta IR. This grant extended the period of U.S. exclusivity for Nucynta IR from June 27, 2025 to July 3, 2026.

 On March 22, 2022, we acquired BioDelivery Sciences International, Inc. ("BDSI"), a specialty pharmaceutical company working to deliver innovative therapies for individuals living with serious and debilitating chronic conditions (the "BDSI Acquisition"). Upon closing of the BDSI Acquisition, we acquired Belbuca and Symproic.

 Belbuca is a buccal film that contains buprenorphine, a Schedule III opioid, and was approved by the FDA in October 2015 for severe and persistent pain that requires an extended treatment period with a daily opioid analgesic and for which alternative options are inadequate. Symproic was approved by the FDA in March 2017 for the treatment of opioid-induced constipation ("OIC") in adult patients with chronic non-cancer pain, including patients with chronic pain related to prior cancer or its treatment who do not require frequent (e.g., weekly) opioid dosage escalation. We began shipping and recognizing product sales related to Belbuca and Symproic in March 2022.

 Financial Operations Overview
 Product Revenues
 Product revenues through the year ended December 31, 2023 were primarily generated from sales of Xtampza ER, the Nucynta Products, Belbuca, and Symproic. In accordance with Accounting Standards Codification Topic 606, Revenue from Contracts with Customers, ("ASC 606") product sales are recorded upon delivery of products to customers (upon the transfer of control of the product to the customer), net of a provision for estimated chargebacks, rebates, sales incentives and allowances, distribution service fees, and returns.
 Cost of Product Revenues
 Cost of product revenues include amortization and impairment expense for the intangible assets acquired in connection with business combinations and asset acquisitions, royalty expenses, the cost of active pharmaceutical ingredient, the cost of producing finished goods that correspond with revenue for the reporting period, as well as certain period costs

 related to freight, packaging, stability and quality testing. Refer to Note 5, License Agreements, and Note 11, Goodwill and Intangible Assets, for further detail around the intangible assets acquired from the BDSI Acquisition, the Nucynta Intangible Asset and royalty expenses.
 Research and Development Expenses
 Research and development expenses have historically consisted of product development expenses incurred in identifying, developing, and testing product candidates including stock-based compensation; costs associated with conducting our clinical and non-clinical activities, including clinical and non-clinical trials that we conduct for post-marketing requirements; and costs for laboratory supplies, depreciation of lab equipment, and other expenses including allocated expenses for rent and maintenance of facilities. These costs have historically been expensed as incurred.
 As of April 1, 2022, we focused entirely on commercial products rather than research and development and redirected resources from research and development activities. As such, there were no expenses incurred in research and development after the three months ended March 31, 2022.

 Selling, General and Administrative Expenses
 Selling, general and administrative expenses consist primarily of salaries and employee-related costs, including stock-based compensation and travel expenses for our employees. Other selling, general and administrative expenses include facility-related costs and professional fees for directors, accounting and legal services, and expenses associated with obtaining and maintaining patents. As we continue to invest in the commercialization of our products, we expect our selling, general and administrative expenses to continue to be substantial for the foreseeable future.
 Interest Expense

 Interest expense consists primarily of cash and non-cash interest costs related to our debt, including the term loan issued in March 2022 in connection with the BDSI Acquisition (the "2022 Term Loan"), the term notes (the "2020 Term Loan") and convertible notes (the "2026 Convertible Notes") issued in February 2020 in connection with the Nucynta Acquisition, and convertible notes issued in February 2023 (the "2029 Convertible Notes").

 On March 22, 2022 the outstanding balance related to the 2020 Term Loan was fully paid in connection with the closing of the BDSI Acquisition and establishment of the 2022 Term Loan.

 Interest Income

 Interest income consists of interest earned on our cash, cash equivalents, and marketable securities.

 Provision for Income Taxes

 The provision for income taxes reflects expense or tax benefit for federal and state income taxes, as well as the impact of non-deductible expenses. During the year ended December 31, 2021, we removed the valuation allowance on the substantial majority of our deferred tax assets, resulting in the recognition of a discrete deferred tax benefit of $78.0 million in 2021.

 Critical Accounting Policies and Significant Judgments and Estimates
 Our "Management's Discussion and Analysis of Financial Condition and Results of Operations" are based on our consolidated financial statements, which have been prepared in accordance with generally accepted accounting principles in the United States of America ("GAAP"). The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expenses and the disclosure of contingent assets and liabilities in our consolidated financial statements. Estimates include revenue recognition, including the estimates of product returns, discounts and allowances related to commercial sales of our products, estimates related to the fair value of assets acquired and liabilities assumed, including acquired intangible assets and the fair value of inventory acquired, estimates utilized in the ongoing valuation of inventory related to potential unsalable product, estimates of useful lives with respect to intangible assets, accounting for stock-based compensation, contingencies, intangible assets and deferred tax valuation allowances. We base our estimates and assumptions on

 historical experience when available and on various factors that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. We evaluate our estimates and assumptions on an ongoing basis. Actual results may differ from these estimates under different assumptions or conditions.
 We believe that several accounting policies are important to understanding our historical and future performance. We refer to these policies as "critical" because these specific areas generally require us to make judgments and estimates about matters that are uncertain at the time we make the estimate, and different estimates—which also would have been reasonable—could have been used, which would have resulted in different financial results. While our significant accounting policies are described in more detail in Note 2, Summary of Significant Accounting Policies, to our consolidated financial statements appearing elsewhere in this Form 10-K, we believe the following accounting policies to be most critical to the significant judgments and estimates used in the preparation of our consolidated financial statements.
 Revenue Recognition
 Our accounting policy for revenue recognition will have a substantial impact on reported results and relies on certain estimates. Estimates are based on historical experience, current conditions and various other assumptions that we believe are reasonable, the results of which form the basis for making judgments about the carrying values of assets, liabilities and equity and the amounts of revenues and expenses. Actual results may differ from these estimates under different assumptions or conditions.
 Product Revenue

 Our only source of revenue to date has been generated by sales of our products, which are primarily sold to distributors ("customers"), which in turn sell the product to pharmacies and others for the treatment of patients. Revenue for product sales is recognized when a customer obtains control of promised goods or services, in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. This generally occurs upon delivery to our customers when estimated provisions for chargebacks, rebates, sales incentives and allowances, distribution service fees, and returns are reasonably determinable. Therefore, product sales are recorded upon delivery to our customers net of estimated chargebacks, rebates, sales incentives and allowances, distribution service fees, as well as estimated product returns.

 Sales Deductions

 Sales deductions consist primarily of provisions for: (i) rebates and incentives, including managed care rebates, government rebates, co-pay program incentives, and sales incentives and allowances; (ii) product returns, including return estimates for our products; and (iii) trade allowances and chargebacks, including fees for distribution service fees, prompt pay discounts, and chargebacks. We estimate the amount of variable consideration that should be included in revenue under the expected value method for all sales deductions other than trade allowances, which are estimated under the most likely amount method. These provisions reflect our best estimates of the amount of revenue to which we are entitled based on the terms of our contracts.
 Provisions for rebates and incentives are based on the estimated amount of rebates and incentives to be claimed on the related sales from the period. As our rebates and incentives are based on products dispensed to patients, we are required to estimate the expected value of claims at the time of product delivery to distributors. Given that distributors sell the product to pharmacies, which in turn dispense the product to patients, claims can be submitted significantly after the related sales are recognized. Our estimates of these claims are based on the historical experience of existing or similar programs, including current contractual and statutory requirements, specific known market events and trends, industry data, and estimated distribution channel inventory levels. Accruals and related reserves required for rebates and incentives are adjusted as new information becomes available, including actual claims. If actual results vary, we may need to adjust these estimates, which could have an effect on earnings in the period of the adjustment.
 Provisions for product returns, including returns for Xtampza, the Nucynta Products, Belbuca and Symproic, are based on product-level returns rates, including processed as well as unprocessed return claims, in addition to relevant market events and other factors. Estimates of the future product returns are made at the time of revenue recognition to determine the amount of consideration to which we expect to be entitled (that is, excluding the products expected to be returned).

 At the end of each reporting period, we analyze trends in returns rates and update our assessment of variable consideration for returns. To the extent we receive amounts in excess of what we expect to be entitled to receive due to a product return, we do not recognize revenue when we transfer products to customers but instead recognize those excess amounts received as a refund liability. We update the measurement of the refund liability at the end of each reporting period for changes in expectations about the amount of refunds with the corresponding adjustments recognized as revenue (or reductions of revenue).
 We provide the right of return to our customers for an 18-month window beginning six months prior to expiration and up until twelve months after expiration. Our customers short-pay an existing invoice upon notice of a product return claim. Adjustments to the preliminary short-paid claims are processed when the return claim is validated and finalized. Our return policy requires that product is returned and that the return is claimed within the 18-month window. Refer to Note 3, Revenue from Contracts with Customers, for more information.
 Provisions for trade allowances and chargebacks are primarily based on customer-level contractual terms. Accruals and related reserves are adjusted as new information becomes available, which generally consists of actual trade allowances and chargebacks processed. Actual results may differ from these estimates under different assumptions or conditions.
 Business Combination Accounting and Valuation of Acquired Assets
 We completed the BDSI Acquisition on March 22, 2022, which was accounted for as a business combination. To determine whether the acquisition should be accounted for as a business combination or as an asset acquisition, we made certain judgments regarding whether the acquired set of activities and assets met the definition of a business. Judgment is required in assessing whether the acquired processes or activities, along with their inputs, would be substantive to constitute a business, as defined by U.S. GAAP.

 The acquisition method of accounting requires that we recognize the assets acquired and liabilities assumed at their acquisition date fair values. Goodwill is measured as the excess of consideration transferred over the acquisition date net fair values of the assets acquired and the liabilities assumed. The determination of the fair value of the acquired assets and liabilities assumed is a critical accounting estimate because the estimation of fair values requires significant management judgment and requires various assumptions based on non-observable inputs that are included in valuation models. An income approach, which generally relies upon projected cash flow models, is used in estimating the fair value of the acquired intangible assets and the fair value of acquired inventory. These cash flow projections are based on management's estimates of economic and market conditions including the estimated future cash flows from revenues of acquired assets, the timing and projection of costs and expenses and the related profit margins, tax rates, and an appropriate discount rate.

 During the measurement period, which occurs before finalization of the purchase price allocation, changes in assumptions and estimates that result in adjustments to the fair values of assets acquired and liabilities assumed, if based on facts and circumstances existing at the acquisition date, are recorded on a retroactive basis as of the acquisition date, with the corresponding offset to goodwill. Any adjustments not based on facts and circumstances existing at the acquisition date, or if subsequent to the conclusion of the measurement period, will be recorded to our consolidated statements of operations.

 Intangible Assets
 We record the fair value of acquired finite-lived intangible assets as of the transaction date. Intangible assets are then amortized over their estimated useful lives using either the straight-line method, or if reliably determinable, based on the pattern in which the economic benefit of the asset is expected to be utilized, which is generally based on our cash flow projections. Future events, such as competition, technological advances, or other changes, are subject to uncertainty and could cause subsequent evaluations to cash flow projections. We test intangible assets for potential impairment whenever triggering events or circumstances present an indication of impairment. If the sum of expected undiscounted future cash flows of the intangible assets (or asset group) is less than the carrying amount of such assets, the intangible assets would be written down to the estimated fair value, calculated based on the present value of expected future cash flows. As of December 31, 2023, our intangible assets included those acquired in connection with the BDSI Acquisition and the Nucynta Intangible Asset.

 Income Taxes
 We utilize the asset and liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are determined based on the difference between the financial statement carrying amounts and tax basis of assets and liabilities using enacted tax rates in effect for years in which the temporary differences are expected to reverse.
 We provide a valuation allowance when it is more likely than not that deferred tax assets will not be realized. In determining the extent to which a valuation allowance for deferred tax assets is required, we evaluate all available evidence including projections of future taxable income, carryback opportunities, reversal of certain deferred tax liabilities, and other tax planning strategies, all of which are subject to uncertainty. Certain deferred tax assets, such as net operating losses and tax credits, expire at varying dates and are generally subject to annual limitations under Section 382 of the Internal Revenue Code of 1986, as amended ("IRC 382"). Significant judgment is required in making these evaluations, including comparing future annual income projections to the expiration dates and annual limitations of such assets. To the extent our future expectations change, we would have to assess the recoverability of these deferred tax assets at that time.
 As a result of sustained positive earnings history as demonstrated through cumulative earnings, we are using projections of future taxable income as a source of realizing our deferred tax assets. We have maintained a valuation allowance on the portion of our deferred tax assets that are not more likely than not to be realized due to tax limitation or other conditions of $5.8 million as of December 31, 2023.
 Results of Operations
 In this section, we discuss the results of our operations for the year ended December 31, 2023 compared to the year ended December 31, 2022. For a discussion of the year ended December 31, 2022 compared to the year ended December 31, 2021, 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, 2022.
 Comparison of the Years Ended December 31, 2023 and 2022
 The following table summarizes the results of our operations for the years ended December 31, 2023 and 2022:

 2023

 2022

 $

 566,767

 $

 463,933

 Cost of product revenues (excluding intangible asset amortization)

 94,838

 118,190

 Intangible asset amortization and impairment

 136,255

 Total cost of products revenues

 240,598

 254,445

 Gross profit

 326,169

 209,488

 Research and development

 —

 3,983

 172,186

 Total operating expenses

 176,169

 Income from operations

 166,961

 33,319

 (83,339)

 (63,213)

 15,615

 1,047

 (23,504)

 —

 Income (loss) before income taxes

 75,733

 (28,847)

 Provision for (benefit from) income taxes

 27,578

 (3,845)

 $

 $

 (25,002)

 Product revenues, net were $566.8 million for the year ended December 31, 2023 ("2023"), compared to $463.9 million for the year ended December 31, 2022 ("2022"), representing a $102.9 million increase. The $102.9 million increase is primarily due to increases in revenue for Belbuca of $55.6 million, Xtampza ER of $38.6 million, the Nucynta Products of $6.3 million, and Symproic of $4.2 million, partially offset by decreases in other revenue of $1.8 million.

 The increase in revenue for Belbuca of $55.6 million and Symproic of $4.2 million is primarily due to a full year of revenue in 2023, compared to a partial year of revenue in 2022 due to the timing of the BDSI Acquisition.

 The increase in revenue for Xtampza ER of $38.6 million is primarily due to lower gross-to-net adjustments primarily related to provisions for rebates and higher gross price, partially offset by lower sales volume and higher gross-to-net adjustments related to provisions for returns.

 The increase in revenue for the Nucynta Products of $6.3 million is primarily due to lower gross-to-net adjustments primarily related to provisions for rebates and returns and higher gross price, partially offset by decreased sales volume.

 Cost of product revenues (excluding intangible asset amortization) was $94.8 million for 2023, compared to $118.2 million for 2022. The $23.4 million decrease was primarily related to 2022 including higher cost of product revenues related to the step-up basis in inventory acquired from BDSI as well as lower sales volume in 2023 for Xtampza and the Nucynta Products.

 Intangible asset amortization was $145.8 million for 2023, compared to $136.3 million for 2022. The $9.5 million increase in intangible asset amortization was due to a full year of amortization expense recognized in 2023 related to the intangible assets acquired from BDSI of which $435.0 million of consideration was allocated to our acquired intangible assets, compared to a partial year of amortization expense in 2022. This increase was partially offset by a decrease in amortization expense as a result of the FDA granting New Patient Population exclusivity in pediatrics for Nucynta IR to July 3, 2026, resulting in an extension of the estimated useful life of the underlying intangible asset. The intangible assets are amortized on a straight-line basis over the respective estimated useful lives.

 We did not recognize research and development expenses in 2023, compared to $4.0 million recognized in 2022. The $4.0 million decrease was due to redirection of resources from research and development activities during 2022 as we shifted our focus to supporting our commercial products rather than research and development.

 Selling, general and administrative expenses were $159.2 million for 2023, compared to $172.2 million for 2022. The $13.0 million decrease was primarily related to:

 a decrease in acquisition related expenses classified as selling, general and administrative of $30.6 million; partially offset by

 an increase in salaries, wages, and benefits of $8.7 million, primarily due to increases in personnel costs for employees retained following the BDSI Acquisition and higher stock-based compensation expenses;

 an overall increase in audit and legal expenses of $5.0 million, primarily due to an $8.5 million litigation settlement;

 an increase in sales and marketing expenses of $3.1 million, primarily due to expenses incurred to support the ongoing commercialization of products acquired from BDSI; and

 an increase in regulatory expenses of $0.8 million, primarily due to a full year of expenses related to products acquired from BDSI.

 Interest expense and Interest income

 Interest expense was $83.3 million for 2023, compared to $63.2 million for 2022. The $20.1 million increase was primarily due to the 2022 Term Loan that we entered into in connection with the BDSI Acquisition, higher interest rates impacting our variable rate term loan debt, and higher interest expense due to the issuance of the 2029 Convertible Notes (offset by the partial repurchase of the 2026 Convertible Notes).

 Interest income was $15.6 million for 2023, compared to $1.0 million for 2022. The $14.6 million increase was primarily due to a higher overall balance invested in 2023 compared to 2022 and higher interest rates earned on cash equivalents and marketable securities.

 We recognized a $23.5 million loss on extinguishment of debt in 2023 in connection with the repurchase of a portion of our 2026 Convertible Notes. This transaction involved a contemporaneous exchange of cash between us and holders of the 2026 Convertible Notes participating in the issuance of the 2029 Convertible Notes. The repurchase of the 2026 Convertible Notes and issuance of the 2029 Convertible Notes were deemed to have substantially different terms based on the present value of the cash flows immediately prior to and after the exchange. Therefore, the repurchase of the 2026 Convertible Notes was accounted for as a debt extinguishment.

 Income Taxes

 The provision for income taxes was $27.6 million for 2023, compared to a $3.8 million benefit from income taxes for 2022. The tax provision for 2023 was impacted by non-deductible costs, including non-deductible costs associated with the debt extinguishment that occurred in the first quarter of 2023 as well as non-deductible costs related to stock-based compensation, including 162(m) limitations. In 2022, we recognized a deferred tax benefit, partially offset by state income tax expense. The provision for income taxes in 2022 primarily consisted of state income tax for states for which our state-level NOLs did not fully offset state-level taxable income. The effective tax rate was 36.4% and 13.3% for 2023 and 2022, respectively.

 Liquidity and Capital Resources

 Sources of Liquidity

 Historically, we have funded our operations primarily through the private placements and/or public offerings of our preferred stock, common stock, and convertible notes; commercial bank debt; and cash inflows from sales of our products. We are primarily dependent on the commercial success of Belbuca, Xtampza, and the Nucynta Products. In March 2022, our debt balance increased significantly as we modified the 2020 Term Loan with Pharmakon to an increased principal balance of $650.0 million to fund a portion of the consideration paid to complete the BDSI Acquisition. We paid $100.0 million in principal payments during the first year of the 2022 Term Loan and the remaining $550.0 million balance will be paid in equal quarterly installments over the remaining three years of the term note. As of December 31, 2023, the outstanding principal balance of the 2022 Term Loan was $412.5 million, of which $183.3 million in principal payments are due within the next 12 months. As of December 31, 2023, the outstanding principal balance of the Convertible Notes was $267.9 million, of which $26.4 million is due in 2026 and $241.5 million is due in 2029. As of December 31, 2023, and December 31, 2022, we had $238.9 million and $173.7 million in cash and cash equivalents, respectively.

 We believe that our cash, cash equivalents, and marketable securities as of December 31, 2023, together with expected cash inflows from operations, will enable us to fund our operating expenses, debt service and capital expenditure requirements under our current business plan for the foreseeable future.

 Borrowing Arrangements and Equity Offerings

 The following transactions represent our material borrowing arrangements and equity offerings: the 2022 Term Loan, the 2026 Convertible Notes, and the 2029 Convertible Notes. Refer to Note 14, Debt, for more information.

 Cash flows

 In this section, we discuss cash flows for the year ended December 31, 2023 compared to the year ended December 31, 2022. For a discussion of the year ended December 31, 2022 compared to the year ended December 31, 2021, 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, 2022.

 2023

 2022

 Net cash provided by operating activities

 $

 274,749

 $

 124,230

 Net cash used in investing activities

 (70,812)

 (573,691)

 Net cash (used in) provided by financing activities

 (140,178)

 436,723

 Net increase (decrease) in cash, cash equivalents and restricted cash

 $

 63,759

 $

 (12,738)

 Operating activities. Cash provided by operating activities was $274.7 million in 2023, compared to $124.2 million in 2022. The $150.5 million increase in cash provided by operating activities was primarily due to the increase in cash flow from operating results, which reflects operating earnings, after adjustment for non-cash items that are included in net income, including higher intangible asset amortization as a result of the BDSI Acquisition and recognition of a loss on extinguishment of debt in connection with the repurchase of a portion of our 2026 Convertible Notes, as well as changes in working capital.

 Investing activities. Cash used in investing activities was $70.8 million in 2023, compared to $573.7 million in 2022. The $502.9 million decrease in cash used in investing activities was primarily due to the use of $572.1 million for the BDSI Acquisition in 2022, net of cash acquired, partially offset by purchases and maturities of marketable securities in 2023.
 Financing activities. Cash used in financing activities was $140.2 million in 2023, compared to cash provided by financing activities of $436.7 million in 2022. The $576.9 million decrease was primarily due to:

 the repayment of the outstanding balance of the 2020 Term Loan and establishment of the 2022 Term Loan in connection with the BDSI Acquisition, which was accounted for as a debt modification and resulted in $517.7 million in proceeds from the term note modification in 2022;

 an increase in repayments of term notes of $87.5 million; and

 an increase in repurchases of common stock of $60.9 million, which includes $75.0 million related to accelerated share repurchases executed in 2023; partially offset by

 the repurchase of a portion of our 2026 Convertibles Notes and issuance of our 2029 Convertible Notes which resulted in net proceeds of $96.6 million in 2023.

 Funding requirements
 We believe that our cash, cash equivalents, and marketable securities as of December 31, 2023, together with expected cash inflows from operations, will enable us to fund our operating expenses, debt service and capital expenditure requirements under our current business plan for the foreseeable future. However, we are subject to all the risks common to the commercialization and development of new pharmaceutical products, and we may encounter unforeseen expenses, difficulties, complications, delays and other unknown factors that may adversely affect our business.

 We have significant future capital requirements, including:

 expected operating expenses to manufacture and commercialize our products and to operate our organization;

 repayment of outstanding principal amounts and interest in connection with our 2022 Term Loan and Convertible Notes;

 royalties we pay on sales of certain products within our portfolio;

 operating lease obligations;

 minimum purchase obligations in connection with our contract manufacturer; and

 cash paid for income taxes.

 In addition, we have significant potential future capital requirements, including:

 we may enter into business development transactions, including acquisitions, collaborations, licensing arrangements and equity investments, that require additional capital; and

 in January 2024, our Board of Directors authorized a new share repurchase program for the repurchase of up to $150.0 million of shares of our common stock through June 30, 2025. Future share repurchases will depend upon, among other factors, our cash balances and potential future capital requirements, our results of operations and financial conditions, the price of our common stock on the NASDAQ Global Select Market, and other factors that we may deem relevant.

 Contractual Obligations
 Our contractual obligations as of December 31, 2023 that will affect our future liquidity include our term loan, including interest; convertible senior notes, including interest; operating lease obligations; and purchase obligations. For further detail regarding our term notes and convertible senior notes, refer to Note 14, Debt. For further detail regarding our operating lease obligations, refer to Note 15, Leases.
 Our purchase obligations represent the minimum purchase obligations of up to $3.0 million per year with our contract manufacturer which are in effect as of December 31, 2023 and will remain in effect each year until the termination of our manufacturing agreement.
 We also have employment agreements with executive officers that would require us to make severance payments to them if we terminate their employment without cause or the executives resign for good cause. These payments are contingent upon the occurrence of various future events, and the amounts payable under these provisions depend upon the level of compensation at the time of termination of employment, and therefore, are not calculable at this time.

 Non-GAAP Financial Measures

 To supplement our financial results presented on a GAAP basis, we have included information about certain non-GAAP financial measures. We believe the presentation of these non-GAAP financial measures, when viewed with our results under GAAP and the accompanying reconciliations, provide analysts, investors, lenders, and other third parties with insights into how we evaluate normal operational activities, including our ability to generate cash from operations, on a comparable year-over-year basis and manage our budgeting and forecasting. In addition, certain non-GAAP financial measures, primarily Adjusted EBITDA, are used to measure performance when determining components of annual compensation for substantially all non-sales force employees, including senior management.

 We may discuss the following financial measures that are not calculated in accordance with GAAP in our quarterly and annual reports, earnings press releases and conference calls.

 Adjusted EBITDA

 Adjusted EBITDA is a non-GAAP financial measure that represents GAAP net income or loss adjusted to exclude interest expense, interest income, the benefit from or provision for income taxes, depreciation, amortization, stock-based compensation, and other adjustments to reflect changes that occur in our business but do not represent ongoing operations. Adjusted EBITDA, as used by us, may be calculated differently from, and therefore may not be comparable to, similarly titled measures used by other companies.

 There are several limitations related to the use of adjusted EBITDA rather than net income or loss, which is the nearest GAAP equivalent, such as:

 adjusted EBITDA excludes depreciation and amortization, and, although these are non-cash expenses, the assets being depreciated or amortized may have to be replaced in the future, the cash requirements for which are not reflected in adjusted EBITDA;

 we exclude stock-based compensation expense from adjusted EBITDA although: (i) it has been, and will continue to be for the foreseeable future, a significant recurring expense for our business and an important part of our compensation strategy; and (ii) if we did not pay out a portion of our compensation in the form of stock-based compensation, the cash salary expense included in operating expenses would be higher, which would affect our cash position;

 adjusted EBITDA does not reflect changes in, or cash requirements for, working capital needs;

 adjusted EBITDA does not reflect the benefit from or provision for income taxes or the cash requirements to pay taxes;

 adjusted EBITDA does not reflect historical cash expenditures or future requirements for capital expenditures or contractual commitments;

 we exclude impairment expenses from adjusted EBITDA and, although these are non-cash expenses, the asset(s) being impaired may have to be replaced in the future, the cash requirements for which are not reflected in adjusted EBITDA;

 we exclude restructuring expenses from adjusted EBITDA. Restructuring expenses primarily include employee severance and contract termination costs that are not related to acquisitions. The amount and/or frequency of these restructuring expenses are not part of our underlying business;

 we exclude litigation settlements from adjusted EBITDA, as well as any applicable income items or credit adjustments due to subsequent changes in estimates. This does not include our legal fees to defend claims, which are expensed as incurred;

 we exclude acquisition related expenses as the amount and/or frequency of these expenses are not part of our underlying business. Acquisition related expenses include transaction costs, which primarily consisted of financial advisory, banking, legal, and regulatory fees, and other consulting fees, incurred to complete the acquisition, employee-related expenses (severance cost and benefits) for terminated employees after the acquisition, and miscellaneous other acquisition related expenses incurred;

 we exclude recognition of the step-up basis in inventory from acquisitions (i.e., the adjustment to record inventory from historic cost to fair value at acquisition) as the adjustment does not reflect the ongoing expense associated with sale of our products as part of our underlying business; and

 we exclude losses on extinguishments of debt as these expenses are episodic in nature and do not directly correlate to the cost of operating our business on an ongoing basis.

 Adjusted EBITDA for the years ended December 31, 2023 and 2022 was as follows:

 2023

 2022

 GAAP net income (loss)

 $

 $

 (25,002)

 83,339

 63,213

 (15,615)

 (1,047)

 —

 Provision for (benefit from) income taxes

 27,578

 (3,845)

 Depreciation

 3,496

 2,684

 Amortization

 131,469

 Impairment expense

 —

 4,786

 8,500

 —

 Acquisition related expenses

 —

 31,297

 Recognition of step-up basis in inventory

 15,116

 39,584

 $

 318,814

 $

 291,015

 Adjusted EBITDA

 $

 366,969

 $

 266,013

 Adjusted EBITDA was $367.0 million for 2023 compared to $266.0 million for 2022. The $101.0 million increase was primarily due to higher revenues and gross profit before excluded costs, partially offset by higher adjusted operating expenses.

 The following is a summary of 2023 quarterly Adjusted EBITDA:

 First Quarter

 Second Quarter

 Third Quarter

 Fourth Quarter

 GAAP net (loss) income

 $

 (17,426)

 $

 13,007

 $

 20,634

 $

 31,940

 21,427

 21,863

 20,768

 19,281

 (2,747)

 (4,027)

 (4,538)

 (4,303)

 —

 —

 —

 (Benefit from) provision for income taxes

 (131)

 4,790

 8,149

 14,770

 Depreciation

 Amortization

 37,466

 37,463

 36,317

 34,514

 6,035

 7,072

 7,027

 7,002

 8,500

 —

 —

 —

 Recognition of step-up basis in inventory

 10,170

 4,748

 —

 $

 105,041

 $

 72,804

 $

 68,756

 $

 72,213

 Adjusted EBITDA

 $

 87,615

 $

 85,811

 $

 89,390

 $

 104,153

 Adjusted Operating Expenses

 Adjusted operating expenses is a non-GAAP financial measure that represents GAAP operating expenses adjusted to exclude stock-based compensation expense, and other adjustments to reflect changes that occur in our business but do not represent ongoing operations.

 Adjusted operating expenses for the years ended December 31, 2023 and 2022 were as follows:

 2023

 2022

 GAAP operating expenses

 $

 $

 176,169

 8,500

 —

 Acquisition related expenses

 —

 31,297

 $

 35,636

 $

 54,171

 Adjusted operating expenses

 $

 123,572

 $

 121,998

 Adjusted operating expenses were $123.6 million for 2023 compared to $122.0 million for 2022. The $1.6 million increase was primarily driven by:

 an increase in salaries, wages, and benefits (excluding stock-based compensation) of $1.8 million, primarily due to increases in personnel costs for employees retained following the BDSI Acquisition;

 an increase in sales and marketing expenses of $3.1 million, primarily due to expenses incurred to support the ongoing commercialization of products acquired from BDSI;

 an increase in regulatory expenses of $0.8 million, primarily due to a full year of expenses related to products acquired from BDSI; partially offset by

 a decrease in audit and legal expenses (excluding litigation settlements) of $3.5 million.

 The following is a summary of 2023 quarterly adjusted operating expenses:

 First Quarter

 Second Quarter

 Third Quarter

 Fourth Quarter

 GAAP operating expenses

 $

 52,775

 $

 38,193

 $

 35,298

 $

 32,942

 6,035

 7,072

 7,027

 7,002

 8,500

 —

 —

 —

 14,535

 7,072

 7,027

 7,002

 Adjusted operating expenses

 $

 38,240

 $

 31,121

 $

 28,271

 $

 25,940

 Adjusted Net Income and Adjusted Earnings Per Share

 Adjusted net income is a non-GAAP financial measure that represents GAAP net income or loss adjusted to exclude significant income and expense items that are non-cash or not indicative of ongoing operations, including consideration of the tax effect of the adjustments. Adjusted earnings per share is a non-GAAP financial measure that represents adjusted net income per share. Adjusted weighted-average shares - diluted is calculated in accordance with the treasury stock, if-converted, or contingently issuable accounting methods, depending on the nature of the security.

 Adjusted net income and adjusted earnings per share for the years ended December 31, 2023 and 2022 were as follows:

 2023

 2022

 (in thousands, except share and per share data)

 GAAP net income (loss)

 $

 $

 (25,002)

 Non-cash interest expense

 8,635

 8,285

 —

 Amortization

 131,469

 Impairment expense

 —

 4,786

 8,500

 —

 Acquisition related expenses

 —

 31,297

 Recognition of step-up basis in inventory

 15,116

 39,584

 Income tax effect of above adjustments (1)

 (53,526)

 (60,553)

 $

 175,125

 $

 177,742

 Non-GAAP adjusted net income

 $

 223,280

 $

 152,740

 Adjusted weighted-average shares — diluted (2)

 41,788,125

 39,531,814

 Adjusted earnings per share (2)

 $

 5.47

 $

 3.96

 (1)
 The income tax effect of the adjustments was calculated by applying our blended federal and state statutory rate to the adjustments that have a tax effect. The blended federal and state statutory rate for the years ended December 31, 2023 and 2022 were 25.9% and 26.0%, respectively. As such, the non-GAAP effective tax rates for the years ended December 31, 2023 and 2022 were 23.4% and 25.4%, respectively.

 (2)
 Adjusted weighted-average shares - diluted were calculated using the "if-converted" method for the convertibles notes in accordance with ASC 260, Earnings per Share. As such, adjusted weighted-average shares – diluted includes shares related to the assumed conversion of our convertible notes and the associated cash interest expense added-back to non-GAAP adjusted net income. For the years ended December 31, 2023 and 2022, adjusted weighted-average shares – diluted includes 6,793,421 and 4,925,134 shares, respectively, attributable to our convertible notes. In addition, adjusted earnings per share includes other potentially dilutive securities to the extent that they are not antidilutive.

 The following is a summary of 2023 quarterly adjusted net income and adjusted earnings per share:

 First Quarter

 Second Quarter

 Third Quarter

 Fourth Quarter

 (in thousands, except share and per share data)

 GAAP net (loss) income

 $

 (17,426)

 $

 13,007

 $

 20,634

 $

 31,940

 Non-cash interest expense

 2,287

 2,261

 2,124

 1,963

 —

 —

 —

 Amortization

 37,466

 37,463

 36,317

 34,514

 6,035

 7,072

 7,027

 7,002

 8,500

 —

 —

 —

 Recognition of step-up basis in inventory

 10,170

 4,748

 —

 Income tax effect of above adjustments (1)

 (18,874)

 (12,100)

 (11,300)

 (11,252)

 $

 69,088

 $

 39,444

 $

 34,366

 $

 32,227

 Non-GAAP adjusted net income

 $

 51,662

 $

 52,451

 $

 55,000

 $

 64,167

 Adjusted weighted-average shares — diluted (2)

 40,196,015

 42,849,952

 42,058,820

 41,279,982

 Adjusted earnings per share (2)

 $

 1.32

 $

 1.26

 $

 1.34

 $

 1.58

 (1)
 The income tax effect of the adjustments was calculated by applying our blended federal and state statutory rate to the adjustments that have a tax effect. The blended federal and state statutory rate for the three months ended March 31, June 30, September 30, and December 31, 2023 were 26.8%, 24.0%, 25.6%, and 25.9%, respectively. As such, the non-GAAP effective tax rates for the three months ended March 31, June 30, September 30, and December 31, 2023 were 21.5%, 23.5%, 24.7%, and 25.9%, respectively.

 (2)
 Adjusted weighted-average shares - diluted were calculated using the "if-converted" method for the convertibles notes in accordance with ASC 260, Earnings per Share. As such, adjusted weighted-average shares – diluted includes shares related to the assumed conversion of our convertible notes and the associated cash interest expense added-back to non-GAAP adjusted net income. For the three months ended March 31, June 30, September 30, and December 31, 2023, adjusted weighted-average shares – diluted includes 4,646,372, 7,509,104, 7,509,104, and 7,509,104 shares, respectively, attributable to our convertible notes. In addition, adjusted earnings per share includes other potentially dilutive securities to the extent that they are not antidilutive.

 Item 7A. Quantitative and Qualitative Disclosures about Market Risks

 Our primary exposure to market risk is interest rate sensitivity in connection with our investment portfolio and the 2022 Term Loan. None of these market risk sensitive instruments are held for trading purposes.

 Investment Portfolio

 Our investment portfolio includes financial instruments that are sensitive to interest rate risks. Our investment portfolio is used to preserve capital, maintain liquidity sufficient to meet cash flow requirements, and maximize returns commensurate with our risk appetite. We invest in instruments that meet the credit quality, diversification, liquidity, and maturity standards outlined in our investment policy.

 As of December 31, 2023, our investment portfolio includes $82.0 million of cash equivalents and $71.6 million of marketable securities, which are primarily comprised of money market funds, U.S. Treasury securities, corporate debt, and government-sponsored securities. Our money market funds are short-term highly liquid investments, and our marketable securities have active secondary or resale markets to help ensure liquidity. We account for marketable securities as available-for-sale, thus, no gains or losses are realized due to changes in the fair value of our marketable securities unless we sell our investments prior to maturity or incur a credit loss. Furthermore, our investment policy includes guidelines limiting the term-to-maturity of our investments. Due to the nature of our investments, we do not believe that the fair value of our investments has a material exposure to interest rate risk.

 2022 Term Loan

 The 2022 Term Loan bears interest at a rate based upon the Secured Overnight Financing Rate ("SOFR") plus a spread adjustment of 0.26% (subject to a floor of 1.20%), plus a margin of 7.5% per annum. Based on the outstanding principal amount of the 2022 Term Loan as of December 31, 2023 of $412.5 million and the applicable interest rate, a hypothetical 1% increase or decrease in interest rates would increase or decrease future interest expense by approximately $4.1 million.

 Item 8. Consolidated Financial Statements and Supplementary Data

 Our Consolidated Financial Statements, together with the reports of our independent registered public accounting firms, begin on page F - 1 of this Form 10 - K.

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

 None.
 Item 9A. Controls and Procedures

 Evaluation of Disclosure Controls and Procedures
 Our management, with the participation of the Chief Executive Officer and the Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, as of the end of the period covered by this report. The term "disclosure controls and procedures" as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other procedures of a company that are designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms. Based on this evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of December 31, 2023.

 Management's Report on Internal Control Over Financial Reporting
 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 consolidated financial statements for external purposes in accordance with generally accepted accounting principles, and 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 our assets;
 (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of consolidated financial statements in accordance with generally accepted accounting principles, and that our receipts and expenditures are being made only in accordance with authorizations of our management and directors; and
 (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on the consolidated financial statements.
 Internal control over financial reporting cannot provide absolute assurance of achieving financial reporting objectives because of its inherent limitations. Internal control over financial reporting is a process that involves human diligence and compliance and is subject to lapses in judgment and breakdowns resulting from human failures. Internal control over financial reporting also can be circumvented by collusion or improper management override. Also, projections of any evaluation of effectiveness of internal control over financial reporting 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 policies or procedures may deteriorate. Because of such limitations, there is a risk that material misstatements may not be prevented

 or detected on a timely basis by internal control over financial reporting. However, these inherent limitations are known features of the financial reporting process. Therefore, it is possible to design into the process safeguards to reduce, though not eliminate, this risk.
 Management is responsible for establishing and maintaining adequate internal control over our financial reporting, as such term is defined in Rules 13a 15(f) and 15d 15(f) under the Exchange Act. Under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, we conducted an evaluation of the effectiveness of our internal control over financial reporting. Management has used the framework set forth in the report entitled "Internal Control—Integrated Framework (2013)" published by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) to evaluate the effectiveness of our internal control over financial reporting. Based on our evaluation, Management has concluded that our internal control over financial reporting was effective as of December 31, 2023.
 Changes in Internal Control Over Financial Reporting
 As required by Rule 13a-15(d) of the Exchange Act, our management, including our Chief Executive Officer and our Chief Financial Officer, conducted an evaluation of the internal control over financial reporting to determine whether any changes occurred during the quarter ended December 31, 2023 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. Based on that evaluation, our Chief Executive Officer and Chief Financial Officer did not identify any change in our internal control over financial reporting during the fiscal quarter ended December 31, 2023 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

 REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

 To the shareholders and the Board of Directors of Collegium Pharmaceutical, Inc.

 Opinion on Internal Control over Financial Reporting

 We have audited the internal control over financial reporting of Collegium Pharmaceutical, Inc. and subsidiaries (the "Company") as of December 31, 2023, 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, 2023, 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, 2023, of the Company and our report dated February 22, 2024, 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

 Boston, Massachusetts

 Item 9B. Other Information

 Insider Trading Arrangements

 During the three months ended December 31, 2023, none of our directors or officers adopted, amended, or terminated a "Rule 10 b5-1 trading arrangement" or "non-Rule 10 b5- 1 trading arrangement," as each term is defined in Item 408 (a) of Regulation S-K.

 Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

 Not applicable.

 Item 10. Directors, Executive Officers, and Corporate Governance
 Other than the information regarding our executive officers provided in Part I of this report under the heading " Business — Our Executive Officers," the information required to be furnished pursuant to this item is incorporated herein by reference to our definitive proxy statement for the 2024 Annual Meeting of the Shareholders.
 Our Board of Directors has adopted a Code of Ethics applicable to all of our employees, executive officers and directors. The Code of Ethics is available on our website at www.collegiumpharma.com. Our Board of Directors is responsible for overseeing compliance with the Code of Ethics, and our Board of Directors or an appropriate committee thereof must approve any waivers of the Code of Ethics for employees, executive officers or directors. Disclosure regarding any amendments to the Code of Ethics, or any waivers of its requirements, will be made on our website.
 Insider Trading Policies
 Our Board of Directors has adopted an Insider Trading Policy which governs the purchase, sales, and/or other dispositions of our securities by directors, officers, and employees. Our Insider Trading Policy is attached hereto as Exhibit 19 and incorporated herein.
 Item 11. Executive Compensation

 The information required by this Item 11 is incorporated herein by reference from our definitive proxy statement for the 2024 Annual Meeting of Shareholders under the captions "Compensation Discussion and Analysis," "Executive Compensation" (excluding the information under the heading "Pay Versus Performance"), "Director Compensation" and "Compensation Committee Report."
 Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

 The information required by this Item 12 is incorporated herein by reference from our definitive proxy statement for the 2024 Annual Meeting of Shareholders under the captions "Compensation Discussion and Analysis," "Executive Compensation" (excluding the information under the heading "Pay Versus Performance"), "Director Compensation" and "Compensation Committee Report."
 Item 13. Certain Relationships and Related Transactions, and Director Independence

 The information required by this Item 13 is incorporated herein by reference from our definitive proxy statement for the 2024 Annual Meeting of Shareholders under the captions "Compensation Discussion and Analysis," "Executive Compensation" (excluding the information under the heading "Pay Versus Performance"), "Director Compensation" and "Compensation Committee Report."

 Item 14. Principal Accountant Fees and Services

 The information required by this Item 14 is incorporated herein by reference from our definitive proxy statement for the 2024 Annual Meeting of Shareholders under the captions "Compensation Discussion and Analysis," "Executive Compensation" (excluding the information under the heading "Pay Versus Performance"), "Director Compensation" and "Compensation Committee Report."

 Item 15. Exhibits and Financial Statement Schedules

 Consolidated Financial Statements

 Refer to Part II, Item 8 for the Consolidated Financial Statements required to be included in this Form 10 - K.

 Consolidated Financial Statement Schedules

 All financial statement schedules are omitted because they are not applicable or the required information is included in the Consolidated Financial Statements or notes thereto.

 Exhibits

 Exhibit Number

 Exhibit Description

 2.1

 Agreement and Plan of Merger, dated as of February 14, 2022, by and among Collegium Pharmaceutical, Inc., Bristol Acquisition Company, Inc. and BioDelivery Sciences International, Inc.

 (1)

 3.1

 Third Amended and Restated Articles of Incorporation of Collegium Pharmaceutical, Inc.

 (2)

 3.2

 Amended and Restated Bylaws of Collegium Pharmaceutical, Inc.

 (3)

 4.1

 Indenture, dated as of February 13, 2020, between Collegium Pharmaceutical, Inc. and The Bank of New York Mellon Trust Company, N.A., as trustee.

 (4)

 4.2

 First Supplemental Indenture, dated as of February 13, 2020, between Collegium Pharmaceutical, Inc. and The Bank of New York Mellon Trust Company, N.A., as trustee.

 (4)

 4.3

 Form of certificate representing the 2.625% Convertible Senior Notes due 2026 (included as Exhibit A to Exhibit 4.2).

 (4)

 4.4

 Indenture, dated as of February 10, 2023, between Collegium Pharmaceutical, Inc. and The Bank of New York Mellon Trust Company, N.A., as trustee.

 (5)

 4.5

 Form of certificate representing the 2.875% Convertible Senior Notes due 2029 (included as Exhibit A to Exhibit 4.4).

 (5)

 4.6

 Description of the Registrant's Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934.

 (6)

 10.1

 Office Lease agreement by and between Campanelli-Trigate 100 TCD Stoughton, LLC, and Collegium Pharmaceutical, Inc as of March 23, 2018.

 (7)

 10.2

 +

 2015 Employee Stock Purchase Plan.

 (8)

 10.3

 +

 Performance Bonus Plan.

 (9)

 10.4(a)

 +

 Amended and Restated 2014 Stock Incentive Plan.

 (8)

 10.4(b)

 +

 Form of Incentive Stock Option Agreement under the Amended and Restated 2014 Stock Incentive Plan.

 (8)

 10.4(c)

 +

 Form of Non-Qualified Stock Option Agreement under the Amended and Restated 2014 Stock Incentive Plan.

 (8)

 10.4(d)

 +

 Form of Restricted Stock Unit Agreement under the Amended and Restated 2014 Stock Incentive Plan.

 10.4(e)

 +

 Form of Performance Share Unit Agreement under the Amended and Restated 2014 Stock Incentive Plan.

 (10)

 10.5

 Form of Indemnification Agreement.

 (9)

 10.6

 +

 Amended & Restated Employment Agreement, dated December 27, 2020, by and between Collegium Pharmaceutical, Inc. and Joseph Ciaffoni.

 (11)

 10.7

 +

 Amended & Restated Employment Agreement, dated December 27, 2020, by and between Shirley Kuhlmann and Collegium Pharmaceutical, Inc.

 (11)

 10.8

 +

 Amended & Restated Employment Agreement, dated December 27, 2020, by and between Collegium Pharmaceutical, Inc. and Scott Dreyer.

 (11)

 10.9

 License Agreement (U.S.), dated as of January 13, 2015, by and among Gr nenthal GmbH, Janssen Research & Development, LLC, Assertio Therapeutics, Inc. and Collegium Pharmaceutical, Inc.

 (12)

 10.10*

 Consent Agreement, dated January 30, 2020, by and among Gr nenthal GmbH, Assertio Therapeutics, Inc. and Collegium Pharmaceutical, Inc.

 (12)

 10.11*

 Settlement Agreement, dated September 29, 2020, by and among Collegium Pharmaceutical, Inc. and Teva Pharmaceuticals USA, Inc.

 (13)

 10.12

 +

 Employment Agreement, dated May 24, 2021, by and between Colleen Tupper and Collegium Pharmaceutical, Inc.

 (14)

 10.13*

 Amended and Restated Loan Agreement, dated as of March 22, 2022, by and among Collegium Pharmaceutical, Inc., the guarantors party thereto, BioPharma Credit PLC, and BioPharma Credit Investments V (Master) LP, as lenders.

 (15)

 10.14

 First Amendment and Consent to Amended and Restated Loan Agreement, dated as of January 3, 2023, by and among Collegium Pharmaceutical, Inc., the guarantors party thereto, BioPharma Credit PLC, and BioPharma Credit Investments V (Master) LP, as lenders.

 10.15

 Second Amendment to Loan Agreement, dated as of February 6, 2023, Amended and Restated Loan Agreement, dated as of March 22, 2022, by and among Collegium Pharmaceutical, Inc., the guarantors party thereto, BioPharma Credit PLC, and BioPharma Credit Investments V (Master) LP, as lenders.

 (16)

 10.16

 Third Amendment to Loan Agreement, dated as of June 23, 2023, by and among Collegium Pharmaceutical, Inc., the guarantors party thereto, BioPharma Credit PLC, and Bio Pharma Credit Investments V (Master) LP, as lenders.

 (17)

 10.17*

 Exclusive License Agreement, dated April 4, 2019, between the Company and Shionogi, Inc. (incorporated by reference to Exhibit 10.19 to the Annual Report on Form 10-K filed by BDSI on March 9, 2022).

 (18)

 10.18

 +

 Amendment to Employment Agreement, dated January 20, 2022 by and between Collegium Pharmaceutical, Inc. and Joseph Ciaffoni.

 (18)

 10.19

 +

 Amendment to Employment Agreement, dated January 20, 2022 by and between Collegium Pharmaceutical, Inc. and Colleen Tupper.

 (18)

 10.20

 +

 Amendment to Employment Agreement, dated January 20, 2022 by and between Collegium Pharmaceutical, Inc. and Shirley Kuhlmann.

 (18)

 10.21

 +

 Amendment to Employment Agreement, dated January 20, 2022 by and between Collegium Pharmaceutical, Inc. and Scott Dreyer.

 (18)

 10.22

 +

 Employment Agreement, dated March 23, 2022 by and between Collegium Pharmaceutical, Inc. and Thomas Smith.

 (18)

 Insider Trading Policy

 21.1

 Subsidiaries of Collegium Pharmaceutical, Inc.

 23.1

 Consent of Deloitte & Touche LLP, Independent Registered Public Accounting Firm.

 31.1

 Certifying Statement of the Chief Executive Officer pursuant to Section 302 of the Sarbanes Oxley Act of 2002.

 31.2

 Certifying Statement of the Chief Financial Officer pursuant to Section 302 of the Sarbanes Oxley Act of 2002.

 32.1

 Certifying Statement of the Chief Executive Officer pursuant to Section 1350 of Title 18 of the United States Code.

 32.2

 Certifying Statement of the Chief Financial Officer pursuant to Section 1350 of Title 18 of the United States Code.

 Compensation Recovery Policy

 Previously filed.
 +Indicates management contract or compensatory plan.
 * Certain portions of the exhibits that are not material and would be competitively harmful if publicly disclosed have been redacted pursuant to Item 601(b)(10)(iv) of Regulation S-K. Copies of the unredacted exhibits will be furnished to the Securities and Exchange Commission ("SEC") upon request.
 (1)
 Previously filed as an exhibit to the registrant's Current Report on Form 8-K filed with the SEC on February 14, 2022.

 (2)
 Previously filed as an exhibit to the registrant's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2020 filed with the SEC on August 5, 2020.

 (3)
 Previously filed as an exhibit to the registrant's Current Report on Form 8-K filed with the SEC on December 4, 2017.

 (4)
 Previously filed as an exhibit to the registrant's Current Report on Form 8-K filed with the SEC on February 13, 2020.

 (5)
 Previously filed as an exhibit to the registrant's Current Report on Form 8-K filed with the SEC on February 13, 2023.

 (6)
 Previously filed as an exhibit to the registrant's Annual Report on Form 10-K for the year ended December 31, 2022 filed with the SEC on February 23, 2023.

 (7)
 Previously filed as an exhibit to the registrant's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2018 filed with the SEC on May 9, 2018.

 (8)
 Previously filed as an exhibit to the registrant's Registration Statement on Form S-8 (File No. 333-207744) filed with the SEC on November 2, 2015.

 (9)
 Previously filed as an exhibit to the registrant's Registration Statement on Form S-1/A (File No. 333-203208) filed with the SEC on April 27, 2015.

 (10)
 Previously filed as an exhibit to the registrant's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2019 filed with the SEC on May 8, 2019.

 (11)
 Previously filed as an exhibit to the registrant's Current Report on Form 8-K filed with the SEC on December 30, 2020.

 (12)
 Previously filed as an exhibit to the registrant's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2020 filed with the SEC on May 7, 2020.

 (13)
 Previously filed as an exhibit to the registrant's Current Report on Form 8-K filed with the SEC on September 30, 2020.

 (14)
 Previously filed as an exhibit to the registrant's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2021 filed with the SEC August 5, 2021.

 (15)
 Previously filed as an exhibit to the registrant's Current Report on Form 8-K filed with the SEC on March 23, 2022.

 (16)
 Previously filed as an exhibit to the registrant's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2023 filed with the SEC May 4, 2023.

 (17)
 Previously filed as an exhibit to the registrant's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2023 filed with the SEC August 3, 2023.

 (18)
 Previously filed as an exhibit to the registrant's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2022 filed with the SEC May 10, 2022.

 Item 16. Form 10-K Summary

 None.

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

 By: /s/ Joseph Ciaffoni

 Joseph Ciaffoni

 Chief Executive Officer

 Signature

 Title

 Date

 /s/ Joseph Ciaffoni

 President and Chief Executive Officer (Principal Executive Officer) and Director

 Joseph Ciaffoni

 /s/ Colleen Tupper

 Executive Vice President and Chief Financial Officer (Principal Financial and Accounting Officer)

 Colleen Tupper

 /s/ Michael T. Heffernan, R.Ph.

 Chairman of the Board

 Michael T. Heffernan, R.Ph.

 /s/ Rita Balice-Gordon, Ph. D.

 Rita Balice-Gordon, Ph. D.

 /s/ Garen G. Bohlin

 Garen G. Bohlin

 /s/ John A. Fallon, M.D.

 John A. Fallon, M.D.

 /s/ John G. Freund, M.D.

 John G. Freund, M.D.

 /s/ Gwen Melincoff

 Gwen Melincoff

 /s/ Gino Santini

 Gino Santini

 /s/ Neil McFarlane

 Neil McFarlane

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

 Index to Consolidated Financial Statements

 Audited Consolidated Financial Statements

 Pages

 Report of Independent Registered Public Accounting Firm ( PCAOB ID 34)

 Consolidated Balance Sheets as of December 31, 2023 and 2022

 Consolidated Statements of Operations for the Years Ended December 31, 2023, 2022, and 2021

 Consolidated Statements of Shareholders' Equity for the Years Ended December 31, 2023, 2022, and 2021

 Consolidated Statements of Cash Flows for the Years Ended December 31, 2023, 2022, and 2021

 Notes to Consolidated Financial Statements

 REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

 To the shareholders and the Board of Directors of Collegium Pharmaceutical, Inc.

 Opinion on the Financial Statements
 We have audited the accompanying consolidated balance sheets of Collegium Pharmaceutical, Inc. and subsidiaries (the "Company") as of December 31, 2023 and 2022, the related consolidated statements of operations, comprehensive income (loss), shareholders' equity, and cash flows, for each of the three years in the period ended December 31, 2023, 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, 2023 and 2022, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2023, 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, 2023, 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 22, 2024, 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.
 Revenue Recognition – Product Return Liability – Refer to Note 3 to the Financial Statements
 Critical Audit Matter Description
 Revenue is recognized when control is transferred to the customer, which occurs upon delivery, and revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring products to a customer ("transaction price"). The transaction price for product sales includes variable consideration related to sales deductions and a refund liability is established for estimated product returns. At the end of each reporting period, the Company updates the estimated transaction price (including updating its assessment of whether an estimate of variable consideration should be constrained). Variable consideration, including the risk of customer concessions, is included in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty is subsequently resolved. The Company updates the measurement of the refund liability at the end of each reporting period for changes in expectations about the amount of refunds with the corresponding adjustments recognized as revenue (or reductions of revenue).

 Estimating the variable consideration and the provision for the refund liability requires significant judgment by management. Given the complexity and significant level of estimation uncertainty involved in calculating the refund liability, our audit procedures in this area required a high degree of auditor judgment and an increased extent of effort.
 How the Critical Audit Matter Was Addressed in the Audit
 Our audit procedures related to the revenue deductions for returns and the refund liability (the "return provision") included the following, among others:

 We tested the effectiveness of controls over the measurement and recognition of the return provision.

 We evaluated the Company's methodology and significant assumptions made in developing the return provision.

 We tested the completeness and accuracy of the data underlying the measurement of the return provision.

 We tested the mathematical accuracy of management's underlying calculation of the return provision.

 We performed a retrospective review, comparing prior period product return estimates to actual product returns.

 We developed independent estimates of the return provision using historical sales and returns activity, product dating and expiration dates, and other information.

 /s/ Deloitte & Touche LLP

 Boston, Massachusetts

 We have served as the Company's auditor since 2016.

 CONSOLIDATED BALANCE SHEETS
 (In thousands, except share and per share data)

 2023

 2022

 Assets

 Current assets

 Cash and cash equivalents

 $

 238,947

 $

 173,688

 Marketable securities

 71,601

 —

 Accounts receivable, net

 179,525

 183,119

 32,332

 46,501

 Prepaid expenses and other current assets

 15,195

 16,681

 Total current assets

 537,600

 419,989

 Property and equipment, net

 15,983

 19,521

 Operating lease assets

 6,029

 6,861

 Intangible assets, net

 421,708

 567,468

 Restricted cash

 1,047

 2,547

 Deferred tax assets

 26,259

 23,950

 Other noncurrent assets

 Goodwill

 133,857

 133,695

 Total assets

 $

 1,143,308

 $

 1,174,131

 Liabilities and shareholders' equity

 Current liabilities

 Accounts payable

 $

 8,692

 $

 3,494

 Accrued liabilities

 37,571

 36,129

 Accrued rebates, returns and discounts

 227,331

 230,491

 Current portion of term notes payable

 183,333

 162,500

 Current portion of operating lease liabilities

 1,112

 Total current liabilities

 457,915

 433,726

 Term notes payable, net of current portion

 221,713

 397,578

 Convertible senior notes

 262,125

 140,873

 Operating lease liabilities, net of current portion

 6,124

 7,112

 Total liabilities

 947,877

 979,289

 Commitments and contingencies (refer to Note 13)

 Shareholders' equity:

 Preferred stock, $ 0.001 par value; authorized shares - 5,000,000

 —

 —

 Common stock, $ 0.001 par value; authorized shares - 100,000,000; 38,192,441 issued and 31,868,549 outstanding shares as of December 31, 2023 and 37,084,759 issued and 33,848,936 outstanding shares as of December 31, 2022

 Additional paid-in capital

 565,949

 538,073

 Treasury stock, at cost; 6,323,892 shares as of December 31, 2023 and 3,235,823 shares as of December 31, 2022

 ( 137,381)

 ( 61,924)

 Accumulated other comprehensive income

 —

 Accumulated deficit

 ( 233,189)

 ( 281,344)

 Total shareholders' equity

 195,431

 194,842

 Total liabilities and shareholders' equity

 $

 1,143,308

 $

 1,174,131

 The accompanying notes are an integral part of these consolidated financial statements.

 CONSOLIDATED STATEMENTS OF OPERATIONS
 (In thousands, except share and per share data)

 2023

 2022

 2021

 $

 566,767

 $

 463,933

 $

 276,868

 Cost of product revenues (excluding intangible asset amortization)

 94,838

 118,190

 59,070

 Intangible asset amortization and impairment

 136,255

 Total cost of products revenues

 240,598

 254,445

 126,251

 Gross profit

 326,169

 209,488

 150,617

 Research and development

 —

 3,983

 9,451

 172,186

 118,960

 Restructuring

 —

 —

 4,578

 Total operating expenses

 176,169

 132,989

 Income from operations

 166,961

 33,319

 17,628

 ( 83,339)

 ( 63,213)

 ( 21,014)

 15,615

 1,047

 ( 23,504)

 —

 —

 Income (loss) before income taxes

 75,733

 ( 28,847)

 ( 3,374)

 Provision for (benefit from) income taxes

 27,578

 ( 3,845)

 ( 74,891)

 $

 $

 $

 Earnings (loss) per share — basic

 $

 1.43

 $

 ( 0.74)

 $

 2.05

 Weighted-average shares — basic

 33,741,213

 33,829,495

 34,936,817

 Earnings (loss) per share — diluted

 $

 1.29

 $

 ( 0.74)

 $

 1.86

 Weighted-average shares — diluted

 41,788,125

 33,829,495

 41,045,805

 The accompanying notes are an integral part of these consolidated financial statements.

 CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
 (In thousands)

 2023

 2022

 2021

 $

 $

 $

 Other comprehensive income:

 Unrealized gains on marketable securities

 —

 —

 Total other comprehensive income

 —

 —

 Comprehensive income (loss)

 $

 48,169

 $

 $

 The accompanying notes are an integral part of these consolidated financial statements.

 CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY
 (In thousands, except share data)

 Additional

 Accumulated Other

 Total

 Common Stock

 Paid-In

 Treasury Stock

 Accumulated

 Comprehensive

 Shareholders'

 Amount

 Capital

 Amount

 Deficit

 Loss

 Equity

 Balance as of December 31, 2020

 34,612,054

 $

 $

 519,143

 —

 $

 —

 $

 ( 333,147)

 $

 —

 $

 186,031

 Cumulative effect of adjustment for adoption of ASU 2020-06

 —

 —

 ( 44,777)

 —

 —

 5,288

 —

 ( 39,489)

 Exercise of common stock options

 803,485

 11,868

 —

 —

 —

 —

 11,869

 Issuance for employee stock purchase plan

 43,719

 —

 —

 —

 —

 —

 Vesting of RSUs and PSUs

 511,743

 —

 —

 —

 —

 —

 —

 —

 Shares withheld for employee taxes upon vesting of RSUs and PSUs

 ( 164,882)

 —

 ( 4,149)

 —

 —

 —

 —

 ( 4,149)

 Share repurchases

 —

 —

 —

 ( 2,150,717)

 ( 42,861)

 —

 —

 ( 42,861)

 Forward contract on ASR agreement

 —

 —

 ( 5,000)

 —

 —

 —

 —

 ( 5,000)

 —

 —

 24,255

 —

 —

 —

 —

 24,255

 Net income

 —

 —

 —

 —

 —

 —

 Balance as of December 31, 2021

 35,806,119

 $

 $

 502,095

 ( 2,150,717)

 $

 ( 42,861)

 $

 ( 256,342)

 $

 —

 $

 202,928

 Exercise of common stock options

 742,348

 —

 11,811

 —

 —

 —

 —

 11,811

 Issuance for employee stock purchase plan

 22,627

 —

 —

 —

 —

 —

 Vesting of RSUs and PSUs

 699,285

 —

 —

 —

 —

 —

 Shares withheld for employee taxes upon vesting of RSUs and PSUs

 ( 226,286)

 —

 ( 4,044)

 —

 —

 —

 —

 ( 4,044)

 Share repurchases

 —

 —

 5,000

 ( 1,085,106)

 ( 19,063)

 —

 —

 ( 14,063)

 Exercise of warrant

 40,666

 —

 —

 —

 —

 —

 —

 —

 —

 —

 —

 —

 —

 —

 Net loss

 —

 —

 —

 —

 —

 —

 Balance as of December 31, 2022

 37,084,759

 $

 $

 538,073

 ( 3,235,823)

 $

 ( 61,924)

 $

 ( 281,344)

 $

 —

 $

 194,842

 Exercise of common stock options

 498,008

 —

 8,641

 —

 —

 —

 —

 8,641

 Issuance for employee stock purchase plan

 26,505

 —

 —

 —

 —

 —

 Vesting of RSUs and PSUs

 898,817

 —

 —

 —

 —

 —

 Shares withheld for employee taxes upon vesting of RSUs and PSUs

 ( 315,648)

 —

 ( 8,361)

 —

 —

 —

 —

 ( 8,361)

 Share repurchases

 —

 —

 —

 ( 3,088,069)

 ( 75,457)

 —

 —

 ( 75,457)

 —

 —

 —

 —

 —

 —

 Other comprehensive income, net of tax

 —

 —

 —

 —

 —

 —

 Net income

 —

 —

 —

 —

 —

 —

 Balance as of December 31, 2023

 38,192,441

 $

 $

 565,949

 ( 6,323,892)

 $

 ( 137,381)

 $

 ( 233,189)

 $

 $

 195,431

 The accompanying notes are an integral part of these consolidated financial statements.

 CONSOLIDATED STATEMENTS OF CASH FLOWS
 (In thousands)

 2023

 2022

 2021

 Operating activities

 $

 $

 $

 Adjustments to reconcile net income (loss) to net cash provided by operating activities:

 Amortization and impairment expense

 136,255

 Depreciation expense

 3,496

 2,684

 1,736

 Deferred income taxes

 ( 2,153)

 ( 8,391)

 ( 78,042)

 Stock-based compensation expense

 24,255

 Non-cash lease (benefit) expense

 ( 280)

 —

 —

 Non-cash interest expense for amortization of debt discount and issuance costs

 8,635

 8,285

 3,406

 Net amortization of premiums and discounts on investments

 ( 1,235)

 —

 —

 Changes in operating assets and liabilities:

 Accounts receivable

 3,594

 ( 21,780)

 ( 22,524)

 14,169

 48,274

 ( 2,296)

 Prepaid expenses and other assets

 1,439

 ( 4,606)

 ( 1,086)

 Accounts payable

 5,061

 ( 707)

 ( 5,827)

 Accrued liabilities

 ( 11,131)

 4,777

 Accrued rebates, returns and discounts

 ( 3,160)

 ( 22,766)

 40,442

 Operating lease assets and liabilities

 —

 —

 Net cash provided by operating activities

 274,749

 124,230

 103,557

 Investing activities

 Purchases of property and equipment

 ( 461)

 ( 1,622)

 ( 1,944)

 Purchases of marketable securities

 ( 92,351)

 —

 —

 Maturities of marketable securities

 22,000

 —

 —

 Acquisition of BDSI (net of cash acquired)

 —

 ( 572,069)

 —

 Net cash used in investing activities

 ( 70,812)

 ( 573,691)

 ( 1,944)

 Financing activities

 Proceeds from issuances of common stock from employee stock purchase plans

 Proceeds from the exercise of stock options

 8,641

 11,811

 11,952

 Payments made for employee stock tax withholdings

 ( 8,361)

 ( 4,044)

 ( 4,149)

 Repurchases of common stock

 ( 75,000)

 ( 14,063)

 ( 47,861)

 Repayment of term notes

 ( 162,500)

 ( 75,000)

 ( 50,000)

 Proceeds from term note modification

 —

 517,682

 —

 Proceeds from issuances of 2029 convertible notes, net of issuance costs of $ 6,280

 235,220

 —

 —

 Repurchase of 2026 Convertible Notes, including premium

 ( 138,638)

 —

 —

 Net cash (used in) provided by financing activities

 ( 140,178)

 436,723

 ( 89,303)

 Net increase (decrease) in cash, cash equivalents and restricted cash

 63,759

 ( 12,738)

 12,310

 Cash, cash equivalents and restricted cash at beginning of year

 176,235

 188,973

 176,663

 Cash, cash equivalents and restricted cash at end of year

 $

 239,994

 $

 176,235

 $

 188,973

 Reconciliation of cash, cash equivalents and restricted cash to the Consolidated Balance Sheets:

 Cash and cash equivalents

 $

 238,947

 $

 173,688

 $

 186,426

 Restricted cash

 1,047

 2,547

 2,547

 Total cash, cash equivalents and restricted cash

 $

 239,994

 $

 176,235

 $

 188,973

 Supplemental disclosure of cash flow information

 Cash paid for interest

 $

 73,256

 $

 52,528

 $

 17,608

 Cash paid for income taxes

 $

 24,205

 $

 10,400

 $

 3,005

 Supplemental disclosure of non-cash activities

 Acquisition of property and equipment in accounts payable and accrued liabilities

 $

 $

 —

 $

 Excise tax on share repurchases in accrued liabilities

 $

 $

 —

 $

 —

 Inventory used in the construction and installation of property and equipment

 $

 —

 $

 —

 $

 The accompanying notes are an integral part of these consolidated financial statements.

 NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 (in thousands, except share and per share data)
 1. Nature of Business
 Organization
 Collegium Pharmaceutical, Inc. (the "Company" or "Collegium") was incorporated in Delaware in April 2002 and then reincorporated in Virginia in July 2014. The Company has its principal operations in Stoughton, Massachusetts. The Company's mission is to build a leading, diversified specialty pharmaceutical company committed to improving the lives of people living with serious medical conditions. The Company's portfolio includes Xtampza ER, Nucynta ER and Nucynta IR (collectively the "Nucynta Products"), Belbuca, and Symproic.

 The Company's operations are subject to certain risks and uncertainties. The principal risks include inability to continue successfully commercializing products, changing market conditions for products and development of competing products, changing regulatory environment and reimbursement landscape, product-related litigation, manufacture of adequate commercial inventory, inability to secure adequate supplies of active pharmaceutical ingredients, key personnel retention, protection of intellectual property, and patent infringement litigation.

 2. Summary of Significant Accounting Policies

 Basis of Accounting
 The consolidated financial statements include the accounts of Collegium Pharmaceutical, Inc. as well as the accounts of its subsidiaries Collegium Securities Corporation (a Massachusetts corporation), Collegium NF LLC (a Delaware limited liability company), BioDelivery Sciences International, Inc. (a Delaware corporation), Arius Pharmaceuticals, Inc. (a Delaware corporation), and Arius Two, Inc. (a Delaware corporation), all wholly owned subsidiaries requiring consolidation. The consolidated financial statements are prepared in conformity with generally accepted accounting principles in the United States of America ("GAAP"). All intercompany balances and transactions have been eliminated in consolidation.
 Use of Estimates

 The preparation of the consolidated financial statements in accordance with GAAP requires the Company to make estimates and assumptions that impact the reported amounts of assets, liabilities, revenues, costs and expenses and the disclosure of contingent assets and liabilities in the Company's consolidated financial statements and accompanying notes. Estimates in the Company's consolidated financial statements include revenue recognition, including the estimates of product returns, discounts and allowances related to commercial sales of products, estimates related to the fair value of assets acquired and liabilities assumed, including acquired intangible assets and the fair value of inventory acquired, estimates utilized in the ongoing valuation of inventory related to potential unsalable product, estimates of useful lives with respect to intangible assets, accounting for stock-based compensation, contingencies, impairment of intangible assets and deferred tax valuation allowances. The Company bases estimates and assumptions on historical experience when available and on various factors that it believes to be reasonable under the circumstances. The Company evaluates its estimates and assumptions on an ongoing basis. The Company's actual results may differ from these estimates under different assumptions or conditions.

 Fair Value Measurements

 Fair value measurements and disclosures describe the fair value hierarchy based on three levels of inputs, of which the first two are considered observable and the last unobservable, that may be used to measure fair value, as follows:

 Level 1 inputs:

 Quoted prices (unadjusted) in active markets for identical assets or liabilities. An active market is defined as a market where transactions for the asset or liability occur with sufficient frequency and volume to provide pricing information on an ongoing basis.

 Level 2 inputs:

 Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. Examples of Level 2 inputs include quoted prices in active markets for similar assets or liabilities and quoted prices for identical assets or liabilities in markets that are not active.

 Level 3 inputs:

 Unobservable inputs that reflect the Company's own assumptions about the assumptions market participants would use in pricing the asset or liability.

 The Company's approach to fair value measurement is aligned with its investment policy focused on capital preservation. The Company invests in instruments within defined credit parameters to minimize credit risk while ensuring liquidity.

 There were no transfers between Levels 1, 2 and 3 during the years ended December 31, 2023 and 2022.

 The following table presents the Company's financial instruments carried at fair value using the lowest level input applicable to each financial instrument as of December 31, 2023 and 2022.

 Significant

 Quoted Prices

 other

 Significant

 in active

 observable

 unobservable

 markets

 inputs

 inputs

 Total

 (Level 1)

 (Level 2)

 (Level 3)

 December 31, 2023

 Cash equivalents:

 Money market funds

 $

 77,299

 $

 77,299

 $

 —

 $

 —

 U.S. Treasury securities

 4,729

 —

 4,729

 —

 Marketable securities:

 Corporate debt securities

 41,612

 —

 41,612

 —

 U.S. Treasury securities

 25,468

 —

 25,468

 —

 Government-sponsored securities

 4,521

 —

 4,521

 —

 Total assets measured at fair value

 $

 153,629

 $

 77,299

 $

 76,330

 $

 —

 December 31, 2022

 Cash equivalents:

 Money market funds

 $

 172,590

 $

 172,590

 $

 —

 $

 —

 Total assets measured at fair value

 $

 172,590

 $

 172,590

 $

 —

 $

 —

 The Company's cash equivalents, which consist of money market funds, are measured at fair value on a recurring basis using quoted market prices. Accordingly, these securities are categorized as Level 1.

 Assets and Liabilities Not Carried at Fair Value

 The Company's convertible senior notes fall into the Level 2 category within the fair value level hierarchy. The fair value was determined based on data points other than quoted prices that are observable, either directly or indirectly, such as broker quotes in a non-active market. As of December 31, 2023, the fair value of the Company's 2.625 % convertible senior notes due in 2026 was $ 25,033 and the net carrying value was $ 25,992. As of December 31, 2023, the fair value of the Company's 2.875 % convertible senior notes due in 2029 was $ 249,803 and the net carrying value was $ 236,133.

 The Company's term notes fall into the Level 2 category within the fair value level hierarchy and the fair value was determined using quoted prices for similar liabilities in active markets, as well as inputs that are observable for the liability (other than quoted prices), such as interest rates that are observable at commonly quoted intervals. As of December 31, 2023, the carrying amount of the term notes reasonably approximated the estimated fair value.

 As of December 31, 2023, and 2022, the carrying amounts of the cash and cash equivalents, accounts receivable, prepaid expenses and other current assets, accounts payable, accrued liabilities, and accrued rebates, returns and discounts, reasonably approximated the estimated fair values.

 Concentration of Credit Risk

 Financial instruments, which potentially subject the Company to significant concentration of credit risk, consist primarily of cash and cash equivalents and accounts receivable. The Company maintains its cash deposits primarily with one reputable and nationally recognized financial institution. In addition, as of December 31, 2023, the Company's cash equivalents were invested in money market funds. The Company has not experienced any material losses in such accounts and management believes that the Company is not exposed to significant credit risk due to the financial position of the financial institutions in which those deposits are held and the nature of the assets in the money market funds.

 Three customers comprised 10% or more of the Company's accounts receivable balance as of December 31, 2023. These customers comprised 38 %, 35 %, and 26 % of the accounts receivable balance as of December 31, 2023 and 37 %, 33 %, and 28 % as of December 31, 2022.

 The same customers comprised 10% or more of the Company's revenue during the year ended December 31, 2023. These customers comprised 33 %, 32 %, and 32 % of revenue during the year ended December 31, 2023; 33 %, 32 %, and 31 % during the year ended December 31, 2022; and 35 %, 31 %, and 29 % during the year ended December 31, 2021.

 To date, the Company has not experienced any credit losses with respect to the collection of its accounts receivable and has not recorded an allowance for credit losses as of December 31, 2023 or 2022. The Company has no financial instruments with off balance sheet risk of loss.

 Cash and Cash Equivalents

 Cash and cash equivalents include cash in readily available checking and savings accounts, including bank deposits, and investments in money market funds. The Company considers all highly liquid investments with an original maturity of three months or less from the date of purchase to be cash equivalents.

 Restricted Cash

 Restricted cash is reported as non-current unless the restrictions are expected to be released in the next twelve months. Restricted cash as of December 31, 2023 represents cash held in a depository account at a financial institution to collateralize conditional standby letters of credit for the Company's lease of its corporate headquarters and its leases of vehicles for its field-based employees.

 Marketable Securities

 As of December 31, 2023, the Company's marketable securities consisted of investments in available-for-sale corporate debt, U.S. Treasury, and government-sponsored securities with readily determinable fair values. The Company classifies available-for-sale marketable securities as current assets on its consolidated balance sheets. The fair value of these securities is based on quoted prices for identical assets or inputs other than quoted prices that are observable for similar assets, either directly or indirectly.

 The Company records interest earned and net amortization of premiums and discounts on investments within interest income on its consolidated statements of operations. The Company records unrealized gains (losses) on available-for-

 sale debt securities as a component of " Accumulated other comprehensive income," which is a separate component of shareholders' equity on its consolidated balance sheets, until such gains and losses are realized. Realized gains and losses are determined using the specific identification method.

 For available-for-sale debt securities with unrealized losses, the Company assesses whether a credit loss allowance is required using an expected loss model. This process involves evaluating whether the fair value of an investment is recoverable when compared to its amortized cost. If an increase in fair value is observed, the Company may reduce any previously recognized credit losses. In determining whether impairments are other-than-temporary, the Company considers its ability and intention to hold the investment until market price recovery, as well as issuer-specific credit ratings, historical losses, and current economic conditions. The Company generally intends to retain investments until their amortized cost is recovered and did not identify any investments with other-than-temporary impairment as of December 31, 2023.

 Inventories are stated at the lower of cost or net realizable value. Inventory costs consist of costs related to the manufacturing of the Company's products, which are primarily the costs of contract manufacturing and active pharmaceutical ingredients. The Company determines the cost of its inventories on a specific identification basis and removes amounts from inventories on a first-in, first-out basis. If the Company identifies excess, obsolete or unsalable items, inventories are written down to their realizable value in the period in which the impairment is identified. These adjustments are recorded based upon various factors, including the level of product manufactured by the Company, the level of product in the distribution channel, current and projected demand and the expected shelf-life of the inventory components.

 The Company outsources the manufacturing of its products to contract manufacturers. In addition, the Company currently relies on a sole supplier or a limited number of suppliers for the active pharmaceutical ingredients in its products. Accordingly, the Company has concentration risk associated with its commercial manufacturing.

 The Company expects to use the inventory over its operating cycle.

 Business Combination Accounting and Valuation of Acquired Assets

 To determine whether acquisitions should be accounted for as a business combination or as an asset acquisition, the Company makes certain judgments regarding whether the acquired set of activities and assets meets the definition of a business. Judgment is required in assessing whether the acquired processes or activities, along with their inputs, would be substantive to constitute a business, as defined by U.S. GAAP.

 The acquisition method of accounting requires the recognition of assets acquired and liabilities assumed at their acquisition date fair values. Goodwill is measured as the excess of consideration transferred over the acquisition date net fair values of the assets acquired and the liabilities assumed. The determination of the fair value requires the estimation of fair values based on non-observable inputs that are included in valuation models. An income approach, which generally relies upon projected cash flow models, is used in estimating the fair value of the acquired intangible assets and the fair value of acquired inventory. These cash flow projections are based on management's estimates of economic and market conditions including the estimated future cash flows from revenues of acquired assets, the timing and projection of costs and expenses and the related profit margins, tax rates, and an appropriate discount rate.

 Goodwill

 Goodwill represents the excess of the purchase price over the estimated fair value of the net assets acquired in a business combination. Goodwill is not amortized but is subject to impairment testing at least annually as of October 1 or when a triggering event occurs that could indicate a potential impairment. In performing the goodwill impairment test, the Company may first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than the carrying value. Alternatively, the Company may elect to proceed directly to the quantitative impairment test. In performing the quantitative analysis, the Company compares the fair value of the reporting unit with its carrying amount, including goodwill. If the carrying amount of the Company's reporting unit exceeds its fair value, the Company would recognize an impairment charge for the amount by which the carrying amount of the reporting unit exceeds its fair value, up to the amount of goodwill allocated to that reporting unit. The Company performed a qualitative assessment during the annual impairment review as of October 1, 2023 and concluded that it is not more likely than not that the fair value of the Company's reporting unit is less than its carrying amount.

 Intangible Assets

 The Company records the fair value of finite-lived intangible assets as of the transaction date. Intangible assets are then amortized over their estimated useful lives using either the straight-line method, or if reliably determinable, based on the pattern in which the economic benefit of the asset is expected to be utilized. The Company tests intangible assets for potential impairment whenever triggering events or circumstances present an indication of impairment. If the sum of expected undiscounted future cash flows of the intangible assets is less than the carrying amount of such assets, the intangible assets would be written down to the estimated fair value, calculated based on the present value of expected future cash flows.

 Property and Equipment

 Property and equipment, including leasehold improvements, are recorded at cost. Maintenance and repair costs are expensed as incurred. Costs which materially improve or extend the lives of existing assets are capitalized. Property and equipment are depreciated when placed into service using the straight-line method based on their estimated useful lives as follows:

 Asset Category

 Estimated Useful Life

 Computers and office equipment

 3 - 5 years

 Laboratory equipment

 5 years

 Furniture and fixtures

 7 years

 Manufacturing equipment

 5 - 13 years

 Leasehold improvements

 Lesser of remaining lease term and estimated useful life

 Costs for capital assets not yet placed into service have been capitalized as construction-in-progress and will be depreciated in accordance with the above guidelines once placed into service.

 Upon retirement or sale, the cost of assets disposed and the related accumulated depreciation are removed from the accounts and any resulting gain or loss is recorded in the statements of operations.

 Leases

 The Company records lease assets and liabilities for lease arrangements exceeding a 12-month initial term. For operating leases, the Company records a beginning lease liability equal to the present value of minimum lease payments to be made over the lease term discounted using the Company's incremental borrowing rate and a corresponding lease asset adjusted for incentives received and indirect costs. At lease commencement, the Company measures the lease liability at the present value of the remaining lease payments discounted using the incremental borrowing rate and the corresponding lease asset is adjusted for incentives received and indirect costs. The Company records operating lease rent expense in the statements of operations over the lease term. Variable lease costs are not included in the measurement of the operating lease liability and are recognized in the period in which they are incurred. Leases with an initial term of

 12 months or less, or short-term leases, are not recorded on the Company's consolidated balance sheets. Short-term lease expense is recognized on a straight-line basis over the lease term. The Company does not have any financing lease arrangements.

 Impairment of Long-Lived Assets

 Long-lived assets consist primarily of property and equipment, operating and finance lease assets, and definite-lived intangible assets. The Company assesses the recoverability of its long-lived assets whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If indications of impairment exist, projected future undiscounted cash flows associated with the asset (or asset group) would be compared to the carrying value of the asset to determine whether the asset's value is recoverable. If impairment is determined, the Company writes down the asset to its estimated fair value and records an impairment loss equal to the excess of the carrying value of the long-lived asset over its estimated fair value in the period at which such a determination is made.

 Revenue Recognition

 The Company's revenue to date is from sales of the Company's products, which are primarily sold to wholesale pharmaceutical distributors, which in turn sell the product to pharmacies for the treatment of patients. The Company recognizes revenue when a customer obtains control of promised goods or services, in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. Refer to Note 3, Revenue from Contracts with Customers, for more information.
 Research and Development Costs

 Research and development expenses have historically consisted of product development expenses incurred in identifying, developing, and testing product candidates. Product development expenses primarily consisted of labor, benefits, and related employee expenses for personnel directly involved in product development activities, fees paid to contract research organizations for managing clinical and non-clinical trials, and regulatory costs.

 As of April 1, 2022, the Company focused entirely on commercial products rather than research and development and redirected resources from research and development activities. As such, there were no expenses incurred in research and development after the three months ended March 31, 2022.

 Advertising and Product Promotion Costs

 Advertising and product promotion costs are included in selling, general and administrative expenses and were $ 7,406, $ 11,743, and $ 4,186 in the years ended December 31, 2023, 2022, and 2021 respectively. Advertising and product promotion costs are expensed as incurred.

 Stock-Based Compensation

 The Company accounts for grants of stock options, restricted stock units and performance share units to employees, as well as to the Board of Directors, based on the grant date fair value and recognizes compensation expense over the vesting period, net of actual forfeitures. For awards with service conditions, the Company recognizes compensation expense on a straight-line basis. The Company estimates the grant date fair value of stock options using the Black-Scholes option pricing model. The Company estimates the grant date fair value of restricted stock units based on the fair value of the underlying common stock. For awards with performance conditions, the Company estimates the number of shares that will vest based upon the probability of achieving performance metrics. For awards with market conditions, the Company recognizes compensation expense on an accelerated attribution basis. The Company estimates the grant date fair value of awards with market conditions using the Monte Carlo model.

 Restructuring

 During the three months ended December 31, 2021, the Company executed a plan to reduce its workforce, primarily related to its salesforce. The arrangements included the payment of a cash severance benefit near the time of separation, together with continued medical benefits and related services. As a result, the Company recognized $ 4,578 in restructuring expense. Of this amount, $ 1,335 was paid by December 31, 2021 and the remaining $ 3,243 was paid in the first half of 2022.

 Income Taxes

 The Company accounts for income taxes under the liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the consolidated financial statements. Under this method, deferred tax assets and liabilities are determined on the basis of the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the years in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date.

 The Company recognizes net deferred tax assets to the extent that the Company believes these assets are more likely than not to be realized. In making such a determination, management considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies and the absence of carryback available from results of recent operations.

 The Company records uncertain tax positions on the basis of a two-step process whereby: (i) management determines whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the position; and (ii) for those tax positions that meet the more likely than not recognition threshold, management recognizes the largest amount of tax benefit that is more than 50% likely to be realized upon ultimate settlement with the related tax authority. The Company will recognize interest and penalties related to uncertain tax positions within income tax expense. Any accrued interest and penalties will be included within the related tax liability. As of December 31, 2023, the Company had no accrued interest or penalties related to uncertain tax positions and no amounts have been recognized in the Company's statements of operations.

 Earnings per Share

 Basic earnings per share is calculated by dividing the net income or loss by the weighted-average number of shares of common stock outstanding during the period, without consideration for potentially dilutive securities. Diluted earnings per share is computed by dividing the net income or loss by the weighted-average number of shares of common stock, plus potentially dilutive securities outstanding for the period, as determined in accordance with the treasury stock, if-converted, or contingently issuable accounting methods, depending on the nature of the security. For purposes of the diluted earnings per share calculation, stock options, restricted stock units, performance share units, and shares potentially issuable in connection with the employee stock purchase plan and convertible senior notes are considered potentially dilutive securities and included to the extent that their addition is not anti-dilutive.

 Embedded Derivatives

 The Company accounts for derivative financial instruments as either equity or liabilities in accordance with Accounting Standards Codification Topic 815, Derivatives and Hedging, ("ASC 815") based on the characteristics and provisions of each instrument. Embedded derivatives are required to be bifurcated from the host instruments and recorded at fair value if the derivatives are not clearly and closely related to the host instruments on the date of issuance. The Company's term notes and convertible notes (refer to Note 14, Debt) contain certain features that, in accordance with ASC 815, are not clearly and closely related to the host instrument and represent derivatives that are required to be re-measured at fair value each reporting period. The Company determined that the estimated fair value of the derivatives at issuance and through December 31, 2023 were not material based on a scenario-based cash flow model that uses unobservable inputs that reflect the Company's own assumptions. Should the Company's assessment of the probabilities around these scenarios change, including due to changes in market conditions, there could be a change to the fair value.

 Recently Adopted Accounting Pronouncements

 New accounting pronouncements are issued periodically by the Financial Accounting Standards Board ("FASB") and are adopted by the Company as required by the specified effective dates.

 In August 2020, the FASB issued Accounting Standards Update ("ASU") 2020-06, Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity's Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity's Own Equity. This ASU simplifies the complexity associated with applying U.S. GAAP for certain financial instruments with characteristics of liabilities and equity. More specifically, the amendments focus on the guidance for convertible instruments and derivative scope exceptions for contracts in an entity's own equity. Under ASU 2020-06, the embedded conversion features are no longer separated from the host contract for convertible instruments with conversion features that are not required to be accounted for as derivatives under Topic 815, or that do not result in substantial premiums accounted for as paid-in capital. Consequently, a convertible debt instrument, such as the Company's convertible senior notes, will be accounted for as a single liability measured at its amortized cost, as long as no other features require bifurcation and recognition as derivatives. The new guidance also requires the if-converted method to be applied for all convertible instruments and requires additional disclosures.

 The Company elected to early adopt this guidance on January 1, 2021 using the modified retrospective method. Under this transition method, the cumulative effect of the accounting change was removing the impact of recognizing the equity component of the Company's convertible notes (at issuance and the subsequent accounting impact of additional interest expense from debt discount amortization). The cumulative effect of the accounting change as of January 1, 2021 was an increase to the carrying amount of the convertible notes of $ 39,489, a reduction to accumulated deficit of $ 5,288, and a reduction to additional paid-in capital of $ 44,777. Interest expense of the convertible senior notes will be lower as a result of adoption of this guidance and diluted net loss per share will be computed using the if-converted method for the convertible senior notes. As a result of the adoption of this guidance, interest expense decreased and net income increased by $ 6,488, basic earnings per share was increased by $ 0.19, and diluted earnings per share was decreased by $ 0.06 for the year ended December 31, 2021.

 In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting, to ease the potential burden in accounting for reference rate reform. The amendments in ASU 2020-04 were elective and applied to all entities that have contracts, hedging relationships, and other transactions that reference the London Interbank Offered Rate ("LIBOR") or another reference rate expected to be discontinued due to reference rate reform. The standard became effective immediately and may be applied prospectively to contracts and transactions through December 31, 2022. Subsequent to issuance, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848): Scope, in January 2021 to refine and clarify some of its guidance on ASU 2020-04 and ASU 2022-06, Reference Rate Reform (Topic 848) to defer the sunset date of Topic 848 from December 31, 2022 to December 31, 2024, after which entities will no longer be permitted to apply the relief in Topic 848. Following the cessation of LIBOR in the United States on June 30, 2023, the Company elected to apply the optional expedient provided in FASB ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting prospectively. Thus, debt previously referenced to LIBOR was transitioned to the Secured Overnight Financing Rate ("SOFR") effective July 1, 2023, however, such transition did not have a material effect on the Company's consolidated financial statements.

 Recently Issued Accounting Pronouncements Not Yet Adopted
 In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280). The amendments in this update expand segment disclosure requirements, including new segment disclosure requirements for entities with a single reportable segment among other disclosure requirements. This update is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The adoption of this standard is not expected to have a material impact on the Company's consolidated financial statements.
 In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740). The amendments in this update expand income tax disclosure requirements, including additional information pertaining to the rate reconciliation, income taxes paid, and other disclosures. This update is effective for annual periods beginning after December 15, 2024. The adoption of this standard is not expected to have a material impact on the Company's consolidated financial statements.

 Other recent accounting pronouncements issued, but not yet effective, are not expected to be applicable to the Company or have a material effect on the consolidated financial statements upon future adoption.

 3. Revenue from Contracts with Customers

 The Company's revenue to date is from sales of the Company's products, which are primarily sold to wholesalers (customers), which in turn sell the product to pharmacies or other outlets for the treatment of patients.

 Revenue Recognition

 The Company recognizes revenue when a customer obtains control of promised goods or services, in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements with a customer, the Company 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. At contract inception, the Company assesses the goods or services promised within each contract and determines those that are performance obligations and assesses whether each promised good or service is distinct. The Company then recognizes as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied.

 The Company expenses incremental costs of obtaining a contract as and when incurred if the expected amortization period of the assets is one year or less.

 Performance Obligations

 The Company determined that performance obligations are satisfied, and revenue is recognized when a customer takes control of the Company's product, which occurs at a point in time. This generally occurs upon delivery of the products to customers, at which point the Company recognizes revenue and records accounts receivable. Payment is typically received 30 to 90 days after satisfaction of the Company's performance obligations.

 Transaction Price and Variable Consideration

 Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring products or services to a customer ("transaction price"). The transaction price for product sales includes variable consideration related to sales deductions, including: (i) rebates and incentives, including managed care rebates, government rebates, co-pay program incentives, and sales incentives and allowances; (ii) product returns, including return estimates; and (iii) trade allowances and chargebacks, including fees for distribution services, prompt pay discounts, and chargebacks. The Company will estimate the amount of variable consideration that should be included in the transaction price under the expected value method for all sales deductions other than trade allowances, which are estimated under the most likely amount method. These provisions reflect the expected amount of consideration to which

 the Company is entitled based on the terms of the contract. In addition, the Company made a policy election to exclude from the measurement of the transaction price all taxes that are assessed by a governmental authority that are imposed on revenue-producing transactions.

 The Company bases its estimates of variable consideration, which could include estimates of future rebates, returns, and other adjustments, on historical data and other information. Estimates include: (i) timing of the rebates and returns incurred; (ii) pricing adjustments related to rebates and returns; and (iii) the quantity of product that will be rebated or returned in the future. Significant judgment is used in determining the appropriateness of these assumptions at each reporting period.

 Rebates and Incentives

 Provisions for rebates and incentives are based on the estimated amount of rebates and incentives to be claimed on the related sales. As the Company's rebates and incentives are based on products dispensed to patients, the Company is required to estimate the expected value of claims at the time of product delivery to wholesalers. Given that wholesalers sell the product to pharmacies, which in turn dispense the product to patients, claims can be submitted significantly after the related sales are recognized. The Company's estimates of these claims are based on the historical experience of existing or similar programs, including current contractual and statutory requirements, specific known market events and trends, industry data, and estimated distribution channel inventory levels. Accruals and related reserves required for rebates and incentives are adjusted as new information becomes available, including actual claims. If actual results vary, the Company may need to adjust future estimates, which could have an effect on earnings in the period of the adjustment.

 Product Returns

 Provisions for product returns, including returns for Xtampza, the Nucynta Products, Belbuca and Symproic, are based on product-level returns rates, including processed as well as unprocessed return claims, in addition to relevant market events and other factors. Estimates of the future product returns are made at the time of revenue recognition to determine the amount of consideration to which the Company expects to be entitled (that is, excluding the products expected to be returned). At the end of each reporting period, the Company analyzes trends in returns rates and updates its assessment of variable consideration. To the extent the Company receives amounts in excess of what it expects to be entitled to receive due to a product return, the Company does not recognize revenue when it transfers products to customers but instead recognizes those excess amounts received as a refund liability. The Company updates the measurement of the refund liability at the end of each reporting period for changes in expectations about the amount of refunds with the corresponding adjustments recognized as revenue (or reductions of revenue).

 The Company provides the right of return to its customers for an 18-month window beginning six months prior to expiration and up until twelve months after expiration. The Company's customers short-pay an existing invoice upon notice of a product return claim. Adjustments to the preliminary short-paid claims are processed when the return claim is validated and finalized. The Company's return policy requires that product is returned and that the return is claimed within the 18-month window.

 2021 Returns Adjustment

 Prior to the year ended December, 31, 2021, estimates of the refund liability for Xtampza product returns were based on a combination of a limited amount of historical actual returns processed to date, taking into consideration the expiration date of product upon delivery to customers, as well as forecasted customer buying and return patterns, channel inventory levels, and other specifically known market events and trends. Sales of Xtampza increased significantly starting in 2018; as a result, the majority of Xtampza sold to customers by the Company had not been eligible for return until the year ended December 31, 2021, or beyond. For the Nucynta Products, estimates of the refund liability for product returns were based on historical returns rates as these products have been commercially sold in the U.S. since 2009 for Nucynta IR and since 2011 for Nucynta ER. Because the Company began selling the Nucynta Products in 2018, most of the Nucynta Products sold to customers by the Company were not eligible for return until the year ended December 31, 2021, or beyond.

 During the year ended December 31, 2021, there were unprecedented and significant disruptions in the processing of product returns. Specifically, the Company's customers, via the third-party returns processor that they and many pharmacies engage to process the majority of the Company's product returns, failed to return products to the Company in the ordinary course. The value of actual returned product during the year ended December 31, 2021 represented less than 20 % of the value of the product returns claimed during that period. Due to the failure of the customers and their vendor to return product timely in the ordinary course, the Company did not physically receive returned products corresponding to the substantial majority of the returns claimed and could not validate or finalize customer return claims, nor determine if the return was or would be eligible for refund upon the physical return. The lack of timely processing of requested product returns obscures information related to the validation of product returns and increases uncertainty related to the actual volume of product that will be physically returned and credited in accordance with the Company's returns policy.

 During the fourth quarter of 2021, after significant and sustained efforts with customers to resolve the unprocessed return claims, the Company formally denied a significant portion of these claims under the Company's return policy. The Company subsequently received payment for only a portion of the denied claims and vigorously pursued collections of the full amount of these short-pay receivables. As a result of discussions with customers related to unprocessed return claims and the uncertainty associated with the ultimate resolution, as well as the impact of unprocessed claims on estimates of future returns, the Company recorded an adjustment to reduce product revenues, net of $ 38,329, with offsetting reductions in accounts receivable or increases in the refund liability for future product returns.

 During the year ended December 31, 2022, the Company revised its estimate of variable consideration associated with unprocessed returns claims that arose in prior periods due to the receipt of payment and settlement, which resulted in an increase to product revenues, net of $ 4,684. During the year ended December 31, 2021, the Company's adjustment was a $ 26,644 reduction in product revenues.

 Trade Allowances and Chargebacks

 Provisions for trade allowances and chargebacks are primarily based on customer-level contractual terms. Accruals and related reserves are adjusted as new information becomes available, which generally consists of actual trade allowances and chargebacks processed relating to sales recognized.

 At the end of each reporting period, the Company updates the estimated transaction price (including updating its assessment of whether an estimate of variable consideration is constrained). Variable consideration, including the risk of customer concessions, is included in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty is subsequently resolved.

 Significant judgment is required to determine the variable consideration included in the transaction price as described above. Adjustments to the estimated variable consideration included in the transaction price occurs when new information indicates that the estimate should be revised. If the value of accepted and processed claims is different than the amount estimated and included in variable consideration, then adjustments would impact product revenues, net and earnings in the period such revisions become known. The amount of variable consideration ultimately received and included in the transaction price may materially differ from the Company's estimates, resulting in additional adjustments recorded to increase or decrease product revenues, net.

 The following table summarizes activity in each of the Company's product revenue provision and allowance categories for the years ended December 31, 2023, 2022, and 2021, respectively:

 Trade

 Rebates and

 Product

 Allowances and

 Incentives (1)

 Returns (2)

 Chargebacks (3)

 Balance as of December 31, 2020

 $

 132,775

 $

 23,779

 $

 19,055

 Provision related to current period sales

 378,694

 27,229

 84,470

 Changes in estimate related to prior period sales

 1,121

 8,763

 Credits/payments made

 ( 370,211)

 ( 5,154)

 ( 90,303)

 Balance as of December 31, 2021

 $

 142,379

 $

 54,617

 $

 13,226

 Acquired from BDSI

 38,074

 18,187

 7,575

 Provision related to current period sales

 497,250

 38,250

 132,547

 Changes in estimate related to prior period sales

 ( 619)

 2,505

 ( 592)

 Credits/payments made

 ( 520,147)

 ( 40,005)

 ( 130,698)

 Balance as of December 31, 2022

 $

 156,937

 $

 73,554

 $

 22,058

 Provision related to current period sales

 424,013

 41,993

 149,976

 Changes in estimate related to prior period sales

 ( 4,802)

 4,268

 Credits/payments made

 ( 426,322)

 ( 42,310)

 ( 151,672)

 Balance as of December 31, 2023

 $

 149,826

 $

 77,505

 $

 20,917

 (1)
 Provisions for rebates and incentives includes managed care rebates, government rebates and co-pay program incentives. Provisions for rebates and incentives are deducted from gross revenues at the time revenues are recognized and are included in accrued rebates, returns and discounts in the Company's consolidated balance sheets.

 (2)
 Provisions for product returns are deducted from gross revenues at the time revenues are recognized and are included in accrued rebates, returns and discounts in the Company's Consolidated Balance Sheets.

 (3)
 Provisions for trade allowances and chargebacks include fees for distribution service fees, prompt pay discounts, and chargebacks. Trade allowances and chargebacks are deducted from gross revenue at the time revenues are recognized and are recorded as a reduction to accounts receivable in the Company's consolidated balance sheets.

 As of December 31, 2023, the Company did not have any transaction price allocated to remaining performance obligations and any costs to obtain contracts with customers, including pre-contract costs and set up costs, were immaterial.

 Disaggregation of Revenue

 The Company discloses disaggregated revenue from contracts with customers into categories that depict how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. As such, the Company disaggregates its product revenues, net from contracts with customers by product, as disclosed in the table below.

 2023

 2022

 2021

 $

 182,095

 $

 126,461

 $

 —

 Xtampza ER

 177,374

 138,804

 103,708

 Nucynta IR

 108,150

 112,058

 102,222

 Nucynta ER

 82,653

 72,418

 70,938

 16,495

 12,267

 —

 Other

 —

 1,925

 —

 Total product revenues, net

 $

 566,767

 $

 463,933

 $

 276,868

 The Company began recognizing revenue from net product sales of Belbuca and Symproic following the Acquisition Date as defined in Note 4, Acquisitions.

 4. Acquisitions

 On March 22, 2022 (the "Acquisition Date"), the Company acquired BioDelivery Sciences International, Inc. ("BDSI"), a specialty pharmaceutical company working to deliver innovative therapies for individuals living with serious and debilitating chronic conditions (the "BDSI Acquisition"). Upon closing, the Company acquired Belbuca and Symproic.

 The BDSI Acquisition was completed to leverage the Company's existing sales force and other operations to commercialize additional products that are typically marketed to similar physicians and to develop other synergies. The Company obtained control through the acquisition of shares in an all-cash transaction which closed on March 22, 2022.

 The total consideration paid for the BDSI acquisition was approximately $ 669,431 consisting of the following (in thousands, except per share amounts):

 Fair Value of Purchase Price Consideration

 Amount

 Fair value of purchase price consideration paid at closing:

 Cash consideration for all outstanding shares of BDSI's common and preferred stock ( 103,235,298 shares acquired at $ 5.60 per share)

 $

 578,118

 Cash consideration paid to settle RSUs and in-the-money options

 28,309

 Cash paid to settle BDSI debt

 63,004

 Total purchase consideration

 $

 669,431

 The Company has accounted for the BDSI Acquisition as a business combination and, accordingly, has included the assets acquired, liabilities assumed and results of operations in its financial statements following the Acquisition Date.

 The final allocation of the consideration transferred to the assets acquired and liabilities assumed has been completed. During the three months ended March 31, 2023, the Company recorded measurement period adjustments to increase accrued expenses by $ 134 and deferred tax liabilities by $ 28, with a corresponding increase to goodwill of $ 162.

 The following tables set forth the final allocation of the BDSI Acquisition purchase price to the estimated fair value of the net assets acquired at the Acquisition Date:

 Amounts Recognized at the Acquisition Date

 Assets Acquired

 Cash and cash equivalents

 $

 97,362

 Accounts receivable

 55,495

 77,382

 Prepaid expenses and other current assets

 6,125

 Property and equipment

 1,242

 Operating lease assets

 Intangible assets

 435,000

 Total assets

 $

 673,087

 Liabilities Assumed

 Accounts payable

 $

 Accrued liabilities

 18,249

 Accrued rebates, returns and discounts

 56,261

 Operating lease liabilities

 Deferred tax liabilities

 62,510

 Total liabilities

 $

 137,513

 Total identifiable net assets acquired

 535,574

 Goodwill

 133,857

 Total consideration transferred

 $

 669,431

 The valuation of the acquired intangible assets is inherently subjective and relies on significant unobservable inputs. The Company used an income approach to value the $ 435,000 of intangible assets. The valuation for each of these intangible assets was based on estimated projections of expected cash flows to be generated by the assets, discounted to the present value at discount rates commensurate with risk. The Company amortizes the identifiable intangible assets on a straight-line basis over their respective useful lives (refer to Note 11, Goodwill and Intangible Assets). In addition, the acquired inventory was recognized at its acquisition-date fair value, which resulted in an increase of $ 54,700 compared to its preacquisition book value.

 The excess of the purchase price over the fair value of identifiable net assets acquired represents goodwill. This goodwill is primarily attributable to synergies of merging operations. The acquired goodwill is not deductible for tax purposes.

 Total revenues attributable to BDSI from the Acquisition Date through December 31, 2022 were $ 140,653. However, earnings attributable to BDSI from the Acquisition Date through December 31, 2022 are not distinguishable due to the rapid integration of BDSI's core operations into the Company.

 Unaudited Pro Forma Summary of Operations

 The following table shows the unaudited pro forma summary of operations for the years ended December 31, 2022 and 2021, as if the BDSI Acquisition had occurred on January 1, 2021. This pro forma information does not purport to represent what the Company's actual results would have been if the acquisition had occurred as of January 1, 2021, and is not indicative of what such results would be expected for any future period:

 2022

 2021

 Total revenues

 $

 493,284

 $

 443,571

 Net income

 $

 8,674

 $

 15,015

 The unaudited pro forma financial information was prepared using the acquisition method of accounting and was based on the historical financial information of the Company and BDSI. The pro forma financial information primarily reflects the following pro forma adjustments:

 The Company's acquisition related transaction costs of $ 14,718 were reflected as of January 1, 2021;

 Employee severance related expense of $ 8,008 was reflected as of January 1, 2021;

 Additional amortization expense from the acquired intangibles;

 Additional cost of product revenues related to the step-up basis in inventory to record inventory at fair value; and

 Adjustments to the Company's interest expense related to repayment of the 2020 Term Loan and entering into the 2022 Term Loan as defined in Note 14, Debt.

 In addition, all of the above adjustments were adjusted for the applicable tax impact.

 Acquisition Related Expenses

 During the year ended December 31, 2022, the Company incurred $ 31,297 of acquisition related expenses as a result of the BDSI Acquisition and the substantial majority were included in "Selling, general, and administrative" expenses in the consolidated statements of operations. These costs include transaction costs, which primarily consisted of financial advisory, banking, legal, and regulatory fees, and other consulting fees, incurred to complete the acquisition, employee-related expenses (severance cost and benefits) for terminated employees after the acquisition, BDSI directors and officers insurance, and miscellaneous other acquisition expenses incurred. The Company does not expect to incur any additional expenses related to the BDSI Acquisition.

 Year Ended December 31, 2022

 Transaction costs

 $

 14,718

 Employee-related expenses

 8,008

 BDSI directors and officers insurance

 4,492

 Other acquisition expenses

 4,079

 Total acquisition related expenses

 $

 31,297

 5. Licenses Agreements
 The Company periodically enters into license agreements to develop and commercialize its products.
 Shionogi license and supply agreement

 Prior to the BDSI Acquisition, BDSI and Shionogi Inc. ("Shionogi") entered into an exclusive license agreement (the "Shionogi License Agreement") for the commercialization of Symproic in the United States including Puerto Rico (the "Shionogi Territory") for the treatment of opioid-induced constipation in adult patients with chronic non-cancer pain (the "Shionogi Field").

 Pursuant to the terms of the Shionogi License Agreement, tiered royalty payments on net sales of Symproic in the Shionogi Territory are payable quarterly based on a royalty rate that ranges from 8.5 % to 17.5 % (plus an additional 1 % of net sales on a pass-through basis to a third-party licensor of Shionogi) based on volume of net sales and whether Symproic is being sold as an authorized generic. Unless earlier terminated, the Shionogi License Agreement will continue in effect until the expiration of the royalty obligations, as defined therein. Upon expiration of the Shionogi License Agreement, all licenses granted for Symproic in the Shionogi Field and in the Shionogi Territory survive and become fully-paid, royalty-free, perpetual and irrevocable.

 BDSI and Shionogi also had entered into a supply agreement under which Shionogi will supply Symproic at cost plus an agreed upon markup. In the event that Symproic is sourced from a third-party supplier, Shionogi would continue to supply naldemedine tosylate for use in Symproic manufacturing at cost plus such agreed upon markup for the duration of the Shionogi License Agreement.

 6. Earnings Per Share
 Basic earnings per share is calculated by dividing the net income or loss by the weighted-average number of shares of common stock outstanding during the period, without consideration for potentially dilutive securities. Diluted earnings per share is computed by dividing the net income or loss by the weighted-average number of shares of common stock, plus potentially dilutive securities outstanding for the period, as determined in accordance with the treasury stock, if-converted, or contingently issuable accounting methods, depending on the nature of the security. For purposes of the diluted earnings per share calculation, stock options, restricted stock units ("RSUs"), performance share units ("PSUs"), and shares potentially issuable in connection with the employee stock purchase plan and convertible senior notes are considered potentially dilutive securities and included to the extent that their addition is not anti-dilutive.

 The following table presents the computations of basic and dilutive earnings (loss) per common share:

 2023

 2022

 2021

 Numerator:

 $

 $

 $

 Adjustment for interest expense recognized on convertible senior notes:

 5,889

 —

 4,675

 Net (loss) income — diluted

 $

 54,044

 $

 $

 76,192

 Denominator:

 Weighted-average shares outstanding — basic

 33,741,213

 33,829,495

 34,936,817

 Effect of dilutive securities:

 Stock options

 271,540

 —

 504,699

 Restricted stock units

 714,190

 —

 461,471

 Performance share units

 267,761

 —

 85,229

 Employee stock purchase plan

 —

 —

 1,198

 Warrants

 —

 —

 131,257

 Convertible senior notes

 6,793,421

 —

 4,925,134

 Weighted average shares outstanding — diluted

 41,788,125

 33,829,495

 41,045,805

 Earnings (loss) per share — basic

 $

 1.43

 $

 ( 0.74)

 $

 2.05

 Earnings (loss) per share — diluted

 $

 1.29

 $

 ( 0.74)

 $

 1.86

 The Company has the option to settle the conversion obligation for its convertible senior notes due in 2026 and 2029 in cash, shares or a combination of the two. The Company uses the if-converted method for the convertible senior notes.
 The following table presents dilutive securities excluded from the calculation of diluted earnings per share:

 2023

 2022

 2021

 Stock options

 259,405

 1,683,805

 1,202,403

 Restricted stock units

 31,050

 2,047,571

 22,605

 Performance share units

 308,680

 447,770

 242,714

 Employee stock purchase plan

 18,591

 —

 —

 Convertible senior notes

 —

 4,925,134

 —

 For PSUs, these securities were excluded from the calculation of diluted earnings per share as the performance-based or market-based vesting conditions were not met as of the end of the reporting period. All other securities presented in the table above were excluded from the calculation of diluted earnings per share as their inclusion would have had an antidilutive effect.

 7. Marketable Securities

 Available-for-sale debt securities were classified on the consolidated balance sheets at fair value as follows:

 2023

 Cash and cash equivalents

 $

 4,729

 Marketable securities

 71,601

 Total

 $

 76,330

 The following table summarizes the available-for-sale securities held as of December 31, 2023:

 Amortized Cost

 Gross Unrealized Gains

 Gross Unrealized Losses

 Fair Value

 Corporate debt securities

 $

 41,610

 $

 $

 ( 45)

 $

 41,612

 U.S. Treasury securities

 30,189

 —

 30,197

 Government-sponsored securities

 4,517

 —

 4,521

 Total

 $

 76,316

 $

 $

 ( 45)

 $

 76,330

 The following table summarizes the contractual maturities of available-for-sale securities other than investments in money market funds as of December 31, 2023:

 2023

 Matures within one year

 $

 61,672

 Matures after one year through five years

 14,658

 Total

 $

 76,330

 The Company did not record any allowances for credit losses to adjust the fair value of available-for-sale debt securities during the year ended December 31, 2023.

 The Company did not hold marketable securities as of December 31, 2022.
 There were no sales of marketable securities during the year ended December 31, 2023. Net unrealized holding gains or losses for the period that have been included in other comprehensive income were not material to the Company's consolidated results of operations.

 8. Inventory

 Inventory consisted of the following:

 2023

 2022

 Raw materials

 $

 10,384

 $

 5,600

 Work in process

 6,740

 24,672

 Finished goods

 15,208

 16,229

 Total inventory

 $

 32,332

 $

 46,501

 During the years ended December 31, 2023 and 2022, the expenses related to excess and obsolete inventory that were recorded as a component of cost of products revenues were $ 1,624 and $ 1,814, respectively. Expenses related to excess and obsolete inventory were immaterial for the year ended December 31, 2021.

 During the years ended December 31, 2023, 2022, and 2021, inventory used in the construction and installation of property and equipment was immaterial.

 9. Prepaid Expenses and Other Current Assets
 Prepaid expenses and other current assets consisted of the following:

 2023

 2022

 Prepaid regulatory fees

 $

 5,938

 $

 5,614

 Prepaid income taxes

 1,416

 5,138

 Prepaid co-pay program incentives

 1,758

 1,907

 Prepaid insurance

 Manufacturing deposits

 2,640

 —

 Other current assets

 Other prepaid expenses

 2,678

 3,005

 Prepaid expenses and other current assets

 $

 15,195

 $

 16,681

 10. Property and Equipment
 Property and equipment consisted of the following:

 2023

 2022

 Computers and office equipment

 $

 2,388

 $

 2,491

 Laboratory equipment

 Furniture and fixtures

 1,133

 1,133

 Manufacturing equipment

 20,643

 20,910

 Leasehold improvements

 1,061

 Total property and equipment

 25,661

 25,844

 Less: accumulated depreciation

 ( 9,678)

 ( 6,323)

 Property and equipment, net

 $

 15,983

 $

 19,521

 Depreciation expense related to property and equipment amounted to $ 3,496, $ 2,684, and $ 1,736 for the years ended December 31, 2023, 2022, and 2021, respectively. During the years ended December 31, 2023, 2022, and 2021 the Company disposed of fully depreciated assets of $ 141, $ 1,040, and $ 96 respectively. Any gains or losses from the retirement, sale or disposal of property and equipment during the years ended December 31, 2023, 2022, and 2021 were immaterial.

 11. Goodwill and Intangible Assets

 The Company's goodwill resulted from the BDSI Acquisition. Refer to Note 4, Acquisitions, for more information.

 The following tables summarizes the changes in the carrying amount of goodwill:

 Amount

 Balance as of December 31, 2021

 $

 —

 Goodwill resulting from BDSI Acquisition

 133,695

 Balance as of December 31, 2022

 $

 133,695

 Measurement period adjustments from BDSI Acquisition

 Balance as of December 31, 2023

 $

 133,857

 The following table sets forth the cost, accumulated amortization, and carrying amount of intangible assets as of December 31, 2023 and 2022:

 As of December 31, 2023

 As of December 31, 2022

 Amortization Period
(Years)

 Cost

 Accumulated Amortization

 Carrying Amount

 Cost

 Accumulated Amortization

 Carrying Amount

 4.8

 $

 360,000

 $

 ( 133,821)

 $

 226,179

 $

 360,000

 $

 ( 58,428)

 $

 301,572

 Nucynta Products (1)

 8.5

 521,170

 ( 382,710)

 138,460

 521,170

 ( 319,628)

 201,542

 9.6

 70,000

 ( 12,931)

 57,069

 70,000

 ( 5,646)

 64,354

 Elyxyb

 —

 —

 —

 —

 5,000

 ( 5,000)

 —

 Total intangibles

 $

 951,170

 $

 ( 529,462)

 $

 421,708

 $

 956,170

 $

 ( 388,702)

 $

 567,468

 The following table presents amortization and impairment expense recognized in cost of product revenues for the years ended December 31, 2023, 2022, and 2021:

 2023

 2022

 2021

 $

 75,393

 $

 58,428

 $

 —

 Nucynta Products (1)

 63,082

 7,285

 5,646

 —

 Elyxyb (2)

 —

 5,000

 —

 Total amortization and impairment expense

 $

 $

 136,255

 $

 (1)
 During the three months ended September 30, 2023, the United States Food and Drug Administration ("FDA") granted New Patient Population exclusivity in pediatrics for Nucynta IR which extends the period of U.S. exclusivity for Nucynta IR to July 3, 2026, resulting in an extension of the estimated useful life of the underlying intangible asset from 8.0 years to 8.5 years. This change in estimate resulted in a decrease of amortization expense of $ 4,099 and an increase in net income of $ 3,037 during the year ended December 31, 2023. The impact to earnings per share — basic and earnings per share — diluted was $ 0.09 and $ 0.07, respectively, during the year ended December 31, 2023.

 (2)
 Includes $ 214 of amortization expense and $ 4,786 of impairment expense.

 Intangible Asset Impairment

 During the three months ended December 31, 2022, the Company made the decision to discontinue the commercialization of Elyxyb. Accordingly, an asset impairment evaluation performed during the three months ended December 31, 2022 resulted in the Company recognizing $ 4,786 of impairment expense related to the Elyxyb intangible asset, which was equivalent to the carrying amount of the Elyxyb asset at the time of the impairment determination. The impairment expense reflects that no significant proceeds are expected to be realized from its disposition. The impairment expense is included in "Intangible asset amortization and impairment" in the consolidated statements of operations. Other expenses associated with the discontinuation of Elyxyb were immaterial.

 The revenues generated from sales of Elyxyb to date were immaterial. Elyxyb is not considered a significant component of the entity's business and therefore, is not presented as a discontinued operation.

 There were no employees impacted by the decision to discontinue the commercialization of Elyxyb and therefore, no severance or employee benefit expenses were recognized. In addition, contract termination costs related to the discontinuation were immaterial and expensed upon the termination of the contracts. In February 2023, the Company entered into the Elyxyb Sale Agreement with Scilex to transfer to Scilex all assets, rights, and obligations necessary to commercialize Elyxyb in the United States and Canada.

 As of December 31, 2023, the remaining amortization expense expected to be recognized is as follows:

 Years ended December 31,

 Nucynta Products

 Total

 2024

 $

 75,393

 $

 55,384

 $

 7,285

 $

 138,062

 2025

 75,393

 55,384

 7,285

 138,062

 2026

 75,393

 27,692

 7,285

 110,370

 2027

 —

 —

 7,285

 7,285

 2028

 —

 —

 7,285

 7,285

 Thereafter

 —

 —

 20,644

 20,644

 Remaining amortization expense

 $

 226,179

 $

 138,460

 $

 57,069

 $

 421,708

 12. Accrued Liabilities
 Accrued liabilities consisted of the following:

 As of December 31,

 2023

 2022

 Accrued royalties

 $

 14,198

 $

 13,770

 Accrued product taxes and fees

 5,013

 4,352

 Accrued bonuses

 4,987

 6,347

 Accrued interest

 2,853

 1,410

 Accrued income taxes

 2,136

 —

 Accrued payroll and related benefits

 1,511

 1,208

 Accrued incentive compensation

 1,375

 1,507

 Accrued sales and marketing

 1,198

 2,130

 Accrued audit and legal

 1,957

 Accrued other operating costs

 3,600

 3,448

 Total accrued liabilities

 $

 37,571

 $

 36,129

 13. Commitments and Contingencies

 Legal Proceedings

 From time to time, the Company may face legal claims or actions in the normal course of business. Except as disclosed below, the Company is not currently a party to any material litigation and, accordingly, does not have any other amounts recorded for any litigation related matters.

 Xtampza ER Litigation

 On March 24, 2015, Purdue sued the Company in the U.S. District Court for the District of Delaware asserting infringement of three of Purdue's Orange Book-listed patents (Patent Nos. 7,674,799, 7,674,800, and 7,683,072) and a non-Orange Book-listed patent (Patent No. 8,652,497). The lawsuit was initiated in response to the Company filing the New Drug Application ("NDA") for Xtampza ER as a 505(b)(2) application referencing data from Purdue's OxyContin NDA, and under the Drug Price Competition and Patent Term Restoration Act of 1984, triggered a stay of up to 30 months before the FDA could issue a final approval for Xtampza ER, unless the stay was earlier terminated.

 The Delaware court transferred the case to the District of Massachusetts. After the Company filed a partial motion for judgment on the pleadings relating to the Orange Book-listed patents, the District Court of Massachusetts ordered judgment in the Company's favor on those three patents, and dismissed the claims which lifted the 30-month stay of FDA approval. Following this judgment, the Company obtained final approval for Xtampza ER and launched commercially.

 Purdue subsequently filed two follow-on lawsuits asserting infringement of two patents that had been late-listed in the Orange Book and, therefore, could not trigger any stay of FDA approval: Purdue asserted infringement of Patent No. 9,073,933 in November 2015 and Patent No. 9,522,919 in April 2017. In addition, Purdue invoked two non-Orange Book-listed patents, filing suit in June 2016 asserting infringement of Patent No. 9,155,717 and in September 2017, asserting infringement of Patent No. 9,693,961.

 On March 13, 2018, the Company filed a Petition for Post-Grant Review ("PGR") of the 961 patent with the Patent Trial and Appeal Board ("PTAB"). The PGR argued that the 961 patent is invalid.

 On November 21, 2017, the Court issued its claim construction ruling, construing certain claims of the 933, 497, and 717 patents. The Court issued an order on September 28, 2018, in which it ruled that the Xtampza ER formulation does not infringe the 497 and 717 patents.

 On September 15, 2019, Purdue commenced chapter 11 bankruptcy proceedings in the United States Bankruptcy Court for the Southern District of New York. Later in September 2019, Purdue gave the District Court of Massachusetts, as well as the PTAB, notice of its bankruptcy filing and sought the imposition of an automatic stay of proceedings. Both the Court and the PTAB granted Purdue's requests to stay the pending matters.

 On September 1, 2020, the Bankruptcy Court entered an Order, lifting the automatic stays in both the District of Massachusetts and PTAB proceedings. On September 11, 2020, Purdue filed a motion to terminate the PTAB action on the basis that those proceedings had gone beyond the 18 -month statutory period. On November 19, 2021, the PTAB: (i) denied Purdue's motion to terminate the PGR; and (ii) issued its Final Written Decision, finding that the asserted claims of the 961 patent were invalid for lack of written description and anticipation. Purdue appealed the decision to Federal Circuit, which issued its decision on November 21, 2023, affirming the authority of the PTAB to issue its Final Written Decision and upholding the PTAB's finding of invalidity relative to the '961 patent.

 On April 2, 2021, the Court granted Purdue's Motion to Lift the Stay in the District of Massachusetts that was entered following Purdue's Notice of Bankruptcy. On April 9, 2021, Purdue filed another follow-on lawsuit asserting infringement of U.S. Patent No. 10,407,434. The Company responded to Purdue's complaint with a motion to dismiss. On May 21, 2021, and in response to the Company's motion to dismiss, Purdue filed an amended complaint. The Company renewed its motion to dismiss on June 4, 2021, arguing: (i) Purdue cannot, as a matter of law, state a claim for infringement under § 271(e)(2)(A); (ii) Purdue cannot, as a matter of law, state a claim for product-by-process infringement under §271(g); and (iii) Purdue has not alleged facts sufficient to support any indirect infringement theory under §271(b) or (c). The Court held a hearing on the Company's motion to dismiss on October 13, 2021, and the motion is pending before the Court.

 Like the prior follow-on lawsuits, the '434 patent litigation was consolidated into the lead case and a scheduling order was entered. On May 15, 2023, the Court issued an order that: (i) vacated the existing deadlines with respect to the 933, 919, and 434 patents and stayed the case pending the Federal Circuit's decision in a different litigation that invalidated certain claims of the 933 and 919 patents; and (ii) continued the existing stay concerning the 961 patent pending resolution of Purdue's appeal rights relating to the decision invalidating the claims of the 961 patent. The Court has not set a deadline for dispositive motions or trial.

 The remaining patents-in-suit in the lead consolidated action in the District of Massachusetts are the 933, 919, 434, and 961 patents. Purdue has made a demand for monetary relief, and requested a judgment of infringement, an adjustment of the effective date of FDA approval, and an injunction on the sale of the Company's products accused of infringement. The Company has denied all claims and has requested a judgment that the remaining asserted patents are invalid and/or not infringed; the Company is also seeking a judgment that the case is exceptional and has requested an award of the Company's attorneys' fees for defending the case.

 The Company plans to defend this case vigorously. At this stage, the Company is unable to evaluate the likelihood of an unfavorable outcome or estimate the amount or range of potential loss, if any.

 Nucynta Litigation

 On February 7, 2018, Purdue filed a patent infringement suit against the Company in the U.S. District Court for the District of Delaware, in which it argues that the Company's sale of immediate-release and extended-release Nucynta infringes U.S. Patent Nos. 9,861,583, 9,867,784, and 9,872,836. On December 6, 2018, the Company filed an Amended Answer asserting an affirmative defense for patent exhaustion. On December 10, 2018, the Court granted the parties' stipulation for resolution of the Company's affirmative defense of patent exhaustion and stayed the action, with the exception of briefing on and resolution of the Company's Motion for Judgment on the Pleadings related to patent exhaustion and any discovery related to that Motion.

 Also, on December 10, 2018, the Company filed a Rule 12(c) Motion for Judgment on the Pleadings, arguing that Purdue's claims were barred by the doctrine of patent exhaustion. On June 19, 2019, the Court issued an order calling for discovery on a factual predicate for the patent exhaustion defense and noted that the case remained "stayed with the exception of discovery and briefing on and resolution of the Company's anticipated motion for summary judgment based on patent exhaustion."

 On September 19, 2019, Purdue notified the Court of its bankruptcy filing and sought an automatic stay of proceedings, which was granted. The Nucynta litigation currently remains subject to the bankruptcy stay.

 The Company plans to defend this case vigorously. At this stage, the Company is unable to evaluate the likelihood of an unfavorable outcome or estimate the amount or range of potential loss, if any.

 Opioid Litigation

 As a result of the opioid epidemic, numerous state and local governments and other entities brought suit against manufacturers, distributors, and pharmacies alleging a variety of claims related to opioid marketing and distribution practices. In late 2017, the U.S. Judicial Panel on Multidistrict Litigation ordered the consolidation of cases pending around the country in federal court against opioid manufacturers and distributors into a Multi-District Litigation ("MDL") in the Northern District of Ohio. The Company was initially named as a defendant in 21 of the MDL cases. By April 19, 2022, all MDL cases naming the Company were dismissed or withdrawn.

 Outside of the MDL, several cases were filed against the Company in Arkansas, Pennsylvania, and Massachusetts state courts with allegations similar to those in the MDL related to opioid marketing and distribution practices, as well as allegations including violations of state consumer protections laws.

 On March 21, 2019, the Arkansas state court litigation was dismissed. On December 24, 2021, the Company entered into a settlement framework with Scott+Scott Attorneys at Law, LLP, the law firm representing plaintiffs in 27 jurisdictions filed either in Pennsylvania and Massachusetts state courts, or filed in other state courts and removed to the MDL. Pursuant to the terms of the settlement, the Company paid $ 2,750 in exchange for dismissal, with prejudice, of each plaintiff's lawsuit and a release of claims related to such lawsuits. The Company is currently dismissed from all cases.

 The Company settled to efficiently resolve these litigations and did not admit any liability or acknowledge any wrongdoing in connection with the settlement.

 Opioid-Related Request and Subpoenas

 The Company, like several other pharmaceutical companies, has received subpoenas or civil investigative demands related to opioid sales and marketing practices, from the Offices of the Attorney General of Washington, New Hampshire, Maryland, and Massachusetts.

 On December 16, 2021, the Company entered into an Assurance of Discontinuance with the Massachusetts Attorney General's Office. The Company is currently cooperating with each of the remaining states in their respective investigations.

 Aquestive Litigation

 On September 22, 2014, Reckitt Benckiser, Inc., Indivior PLC (formerly RB Pharmaceuticals Limited, "Indivior"), and Aquestive Therapeutics, Inc. (formerly MonoSol Rx, "Aquestive") (collectively, the "RB Plaintiffs") filed an action in the District Court in the District of New Jersey alleging patent infringement against BDSI related to its Bunavail product. The RB Plaintiffs claimed that Bunavail, whose formulation and manufacturing processes have never been disclosed publicly, infringed U.S. Patent No. 8,765,167 (the "'167 Patent").

 On January 13, 2017, Aquestive filed a complaint in the District Court for the District of New Jersey against BDSI alleging Belbuca also infringed the '167 Patent. On March 8, 2023, the parties filed a stipulation of dismissal after agreeing to settle the dispute. Under the terms of the settlement agreement, BDSI resolved both the Bunavail and Belbuca litigations in exchange for a one-time, lump-sum payment of $ 8,500 to Aquestive, which was recognized as an expense included in " selling, general and administrative expenses " in the consolidated statements of operations for the year ended December 31, 2023.

 Litigation Related to the BDSI Acquisition

 On February 25, 2022, in connection with the BDSI Acquisition, a purported individual stockholder of BDSI filed a complaint in the District Court for the Southern District of New York naming as defendants BDSI and each member of its Board of Directors as of the date of the Merger Agreement (" Stein Action"). On February 28, 2022, two additional cases were filed by purported individual stockholders of BDSI in the same court: the " Sanford Action" and the " Higley Action." In March 2022, two additional cases were filed by purported individual stockholders of BDSI in the District Court for the Eastern District of New York: the " Justice Action" and the "Zomber Action" (together with the Stein, Sanford, and Higley Actions, the "Actions"). The Actions and any similar subsequently filed cases involving BDSI, its officers or Board of Directors, or any committee thereof, and/or any of the Company's officers or directors relating directly or indirectly to the Merger Agreement, the BDSI Acquisition or any related transaction, are referred to as the "Merger Litigations."

 The Merger Litigations filed to date generally allege that the Schedule 14D-9 is materially incomplete and misleading. The Merger Litigations assert violations of Section 14(e) of the Exchange Act and violations of Section 20(a) of the Exchange Act against BDSI's Board of Directors. The Merger Litigations seek, among other things: an injunction enjoining consummation of the Merger, rescission of the Merger Agreement, a declaration that BDSI and its Board of Directors violated Sections 14(e) and 20(a) of the Exchange Act and Rule 14a-9 promulgated thereunder, damages, costs of the action, including plaintiffs' attorneys' fees and experts' fees and expenses, and any other relief the court may deem just and proper.

 In addition, between February and March of 2022, BDSI received demand letters from three purported stockholders of BDSI seeking to inspect certain books and records of BDSI related to the Merger (collectively, the "Inspection Letters"). In March 2022, BDSI received demand letters from four purported stockholders alleging that the Schedule 14D-9 omits purportedly material information relating to the Merger (collectively, the "Demand Letters").

 Plaintiffs in the Higley, Zomber, and Justice Actions each filed a notice of voluntary dismissal of their complaint in the second quarter of 2022. On July 28, 2022, plaintiff in the Sanford Action filed a partial voluntary dismissal of the individual named defendants, and on October 26, 2022, filed a notice of voluntary dismissal of the BDSI defendant. On February 17, 2023, the Stein Action was dismissed.

 While the Company believes that the remaining Merger Litigations, Inspection Letters, and Demand Letters are without merit and that the disclosures in the Schedule 14D-9 comply fully with applicable law, solely in order to avoid the expense and distraction of litigation, BDSI previously determined to voluntarily supplement the Schedule 14D-9 with certain supplemental disclosures set forth in BDSI's Schedule 14D-9 filed with the SEC on March 11, 2022 (the "Supplemental Disclosures"). The Company and BDSI believe that the Supplemental Disclosures mooted all allegations or concerns raised in the Merger Litigations, Inspection Letters, and Demand Letters.

 Alvogen

 On September 7, 2018, BDSI filed a complaint for patent infringement in District Court for the District of Delaware against Alvogen Pb Research & Development LLC, Alvogen Malta Operations Ltd., Alvogen Pine Brook LLC, Alvogen, Incorporated, and Alvogen Group, Incorporated (collectively, "Alvogen"), asserting that Alvogen infringed BDSI's Orange Book-listed patents for Belbuca, including U.S. Patent Nos. 8,147,866, 9,655,843 and 9,901,539 (collectively, "the BEMA patents"). This complaint followed receipt by BDSI on July 30, 2018 of a Paragraph IV Patent Certification from Alvogen stating it had filed an abbreviated New Drug Application ("ANDA") with the FDA for a generic version of Belbuca Buccal Film in strengths 75 mcg, 150 mcg, 300 mcg, 450 mcg, 600 mcg, 750 mcg and 900 mcg.

 A three-day bench trial was held from March 1-3, 2021. On December 20, 2021, the Court issued an opinion upholding the validity of certain claims in BDSI's 866 patent and certain claims in the '539 patent. The Court entered final judgment on January 21, 2022 upholding the validity of claims of the '866 and '539 patents and thereby extended the effective date of any final approval by the FDA of Alvogen's ANDA until December 21, 2032, (the expiration date of the '539 patent) and enjoining Alvogen from commercially launching its ANDA products until December 21, 2032. Alvogen filed a motion to stay certain provisions of the final judgment. BDSI filed an opposition to Alvogen's request for a stay. The Court retained jurisdiction to decide BDSI's motion for contempt, which was filed on September 21, 2021.

 Alvogen filed a notice of appeal to the Federal Circuit seeking to reverse the Court's final judgment. Separately, BDSI filed a cross-appeal to the Federal Circuit seeking to reverse the Court's opinion that claims 3 and 10 of the 866 patent and claims 8, 9 and 20 of the '843 patent are invalid and thus, Alvogen is not liable for infringement of those claims, as well as any other ruling decided adversely to BDSI. On December 21, 2022, the Federal Circuit affirmed the district court judgment that certain claims of the 866 and 539 patent were not invalid as obvious. The Federal Circuit also vacated the district court's judgment that certain claims of the 866 and 843 patent were invalid as obvious and remanded to the district court for further proceedings. The mandate issued on February 10, 2023.

 As it has done in the past, the Company intends to vigorously defend its intellectual property against assertions of invalidity or non-infringement.

 Chemo Research, S.L.

 On March 1, 2019, BDSI filed a complaint for patent infringement in the District Court for the District of Delaware against Chemo Research, S.L., Insud Pharma S.L., IntelGenx Corp., and IntelGenx Technologies Corp. (collectively, the "Chemo Defendants"), asserting that the Chemo Defendants infringe the BEMA patents. This complaint followed receipt by BDSI on January 31, 2019, of a Notice Letter from Chemo Research S.L. stating that it had filed with the FDA an ANDA containing a Paragraph IV Patent Certification, for a generic version of Belbuca Buccal Film in strengths 75 mcg, 150 mcg, 300 mcg, 450 mcg, and 900 mcg.

 Chemo agreed to be bound by the decision of the Court with respect to the validity of the BEMA patents as disputed between BDSI and Alvogen. Accordingly, the December 20, 2021 ruling of the Court upholding the validity of certain claims of the BEMA patents is binding upon Chemo. In March 2022, the Court vacated the bench trial set to begin April 25, 2022 to address the remaining Chemo infringement claims. The Court has not yet set a new trial date.

 On August 1, 2022, BDSI received a second Paragraph IV certification notice letter from Chemo indicating it amended its ANDA to: (i) withdraw its generic version of the 75 mcg and 150 mcg strengths of Belbuca; and (ii) include its generic version of the 600 mcg and 750 mcg strengths of Belbuca, in addition to the 300 mcg, 450 mcg, and 900 mcg strengths identified in the first Chemo Paragraph IV certification notice letter. In response, BDSI filed a complaint for patent infringement in Federal District Court for the District of Delaware. Chemo answered the complaint on December 1, 2022. The Court has not yet set a schedule for this litigation.

 On August 24, 2022, the Court instructed the parties to update the Court at such time as the FDA addresses Chemo's July 29, 2022 response to the FDA. On February 8, 2023, the Court denied Chemo's request for a trial date in the spring, and

 again instructed the parties to update the Court at such time as the FDA addresses Chemo's July 29, 2022 response to the FDA. Chemo received a complete response letter with respect to its July 29, 2022 ANDA in April 2023. Chemo submitted a further amended ANDA to FDA in September 2023.

 The Company plans to litigate this case vigorously. At this stage, the Company is unable to evaluate the likelihood of an unfavorable outcome or estimate the amount or range of potential loss, if any.

 14. Debt

 2020 Term Loan

 On February 6, 2020, in connection with the execution of the Nucynta Purchase Agreement, the Company, together with its subsidiary, Collegium Securities Corporation, entered into a loan agreement (the "2020 Loan Agreement") with BioPharma Credit PLC, as collateral agent and lender, and BioPharma Credit Investments V (Master) LP, as lender (collectively "Pharmakon"). The 2020 Loan Agreement provided for a $ 200,000 secured term loan (the "2020 Term Loan"), the proceeds of which were used to finance a portion of the purchase price paid pursuant to the Nucynta Purchase Agreement. O n February 13, 2020 (the "2020 Term Loan Closing Date"), the Company received the $ 200,000 proceeds from the 2020 Term Loan.

 On March 22, 2022 the outstanding balance under the 2020 Loan Agreement was fully paid in connection with the closing of the BDSI Acquisition and establishment of the 2022 Term Loan, as described below.

 2022 Term Loan

 On March 22, 2022, in connection with the closing of the BDSI Acquisition, the Company entered into an Amended and Restated Loan Agreement by and among the Company, and BioPharma Credit PLC, as collateral agent and lender, and BioPharma Credit Investments V (Master) LP, as lender (collectively "Pharmakon"), as amended (the "2022 Loan Agreement"). The 2022 Loan Agreement provided for a $ 650,000 secured term loan (the "2022 Term Loan"), the proceeds of which were used to repay the Company's existing term notes and fund a portion of the consideration to be paid to complete the BDSI Acquisition. The 2022 Loan Agreement was accounted for as a debt modification and transaction fees of $ 173 were expensed. In connection with the 2022 Loan Agreement, the Company paid loan commitment and other fees to the lender of $ 19,818, which together with preexisting debt issuance costs and note discounts of $ 2,049 will be amortized over the term of the loan using the effective interest rate.

 The 2022 Term Loan will mature on the 48-month anniversary of the closing of the BDSI Acquisition and is guaranteed by the Company's material domestic subsidiaries. The 2022 Term Loan is also secured by substantially all of the assets of the Company and its material domestic subsidiaries. Prior to the cessation of LIBOR on June 30, 2023, the 2022 Term Loan bore interest at a rate based on LIBOR (subject to a LIBOR floor of 1.20 %), plus a margin of 7.5 % per annum. On June 23, 2023, the Company entered into an amendment to the 2022 Loan Agreement to adjust the interest terms of the 2022 Term Loan to transition from LIBOR to SOFR in anticipation of the cessation of LIBOR. Effective July 1, 2023, the 2022 Term Loan bears interest at a rate based on SOFR plus a spread adjustment of 0.26 % (subject to a floor of 1.20 %), plus a margin of 7.5 % per annum. As of December 31, 2023, the contractual interest rate was 13.2 %. The Company paid $ 100,000 in principal payments under the 2022 Term Loan during the first year and the remaining $ 550,000 balance is required to be paid in equal quarterly installments over the remaining three years.

 The 2022 Loan Agreement permits voluntary prepayment at any time, subject to a prepayment premium. The prepayment premium is equal to 2.00 % of the principal amount being prepaid prior to the second-year anniversary of the closing date, or 1.00 % of the principal amount being prepaid on or after the second-year anniversary of the closing date. The 2022 Loan Agreement also includes a make-whole premium in the event of a voluntary prepayment, a prepayment due to a change in control or acceleration following an Event of Default (as defined in the 2022 Loan Agreement) on or prior to the second-year anniversary of the closing date, in each case in an amount equal to foregone interest from the date of prepayment through the second-year anniversary of the closing date. A change of control also triggers a mandatory prepayment of the 2022 Term Loan.

 The 2022 Loan Agreement contains certain covenants and obligations of the parties, including, without limitation, covenants that limit the Company's ability to incur additional indebtedness or liens, make acquisitions or other investments or dispose of assets outside the ordinary course of business. Failure to comply with these covenants would constitute an Event of Default under the 2022 Loan Agreement, notwithstanding the Company's ability to meet its debt service obligations. The 2022 Loan Agreement also includes various customary remedies for the lenders following an Event of Default, including the acceleration of repayment of outstanding amounts under the 2022 Loan Agreement and execution upon the collateral securing obligations under the 2022 Loan Agreement.

 The following table presents the total interest expense recognized related to the 2020 Term Loan and 2022 Term Loan during the years ended December 31, 2023, 2022, and 2021:

 2023

 2022

 2021

 Contractual interest expense

 $

 67,499

 $

 51,155

 $

 13,834

 Amortization of debt issuance costs

 7,468

 7,378

 2,505

 Total interest expense

 $

 74,967

 $

 58,533

 $

 16,339

 As of December 31, 2023, the effective interest rate on the 2022 Term Loan was 14.7 %.

 As of December 31, 2023, principal repayments under the 2022 Term Loan are as follows:

 Years ended December 31,

 Principal Payments

 2024

 $

 183,333

 2025

 183,333

 2026

 45,834

 Total before unamortized discount and issuance costs

 $

 412,500

 Less: unamortized discount and issuance costs

 ( 7,454)

 Total term notes

 $

 405,046

 2026 Convertible Notes

 On February 13, 2020, the Company issued 2.625 % convertible senior notes due in 2026 (the "2026 Convertible Notes") in the aggregate principal amount of $ 143,750, in a public offering registered under the Securities Act of 1933, as amended. The 2026 Convertible Notes were issued in connection with funding the acquisition of the Nucynta Products. Some of the Company's existing investors participated in the 2026 Convertible Notes offering.

 In connection with the issuance of the 2026 Convertible Notes, the Company incurred approximately $ 5,473 of debt issuance costs, which primarily consisted of underwriting, legal and other professional fees.

 The 2026 Convertible Notes are senior unsecured obligations and bear interest at a rate of 2.625 % per year payable semi-annually in arrears on February 15 and August 15 of each year, beginning on August 15, 2020. Before August 15, 2025, noteholders will have the right to convert their notes only upon the occurrence of certain events. From and after August 15, 2025, noteholders may convert their notes at any time at their election until the close of business on the scheduled trading day immediately before the maturity date. The Company will settle conversions by paying or delivering, as applicable, cash, shares of the Company's common stock or a combination of cash and shares of the Company's common stock, at the Company's election. The 2026 Convertible Notes will mature on February 15, 2026, unless earlier repurchased, redeemed or converted. The initial conversion rate is 34.2618 shares of common stock per $1 principal amount of the 2026 Convertible Notes, which represents an initial conversion price of approximately $ 29.19 per share of common stock. The conversion rate and conversion price are subject to adjustment upon the occurrence of certain events.

 Holders of the 2026 Convertible Notes may convert all or any portion of their 2026 Convertible Notes, in multiples of $1 principal amount, at their option only under the following circumstances:

 (1)
 during any calendar quarter commencing after the calendar quarter ending on March 31, 2020, if the last reported sale price per share of the Company's common stock exceeds 130 % of the conversion price for at least 20 trading days during the 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter;

 (2)
 during the five consecutive business days immediately after any 10 consecutive trading day period (such 10 consecutive trading day period, the "measurement period") in which the "trading price" per $1 principal amount of the 2026 Convertible Notes for each trading day of the measurement period was less than 98 % of the product of the last reported sale price per share of the Company's common stock on such trading day and the conversion rate on such trading day;

 (3)
 upon the occurrence of certain corporate events or distributions on the Company's common stock;

 (4)
 if the Company calls the 2026 Convertible Notes for redemption; or

 (5)
 at any time from, and including, August 15, 2025 until the close of business on the scheduled trading day immediately before the maturity date.

 As of December 31, 2023, none of the above circumstances had occurred and as such, the 2026 Convertible Notes could not have been converted.

 The Company did not have the right to redeem the 2026 Convertible Notes prior to February 15, 2023. On or after February 15, 2023, the Company may redeem the 2026 Convertible Notes, in whole and not in part, at a cash redemption price equal to the principal amount of the 2026 Convertible Notes to be redeemed, plus accrued and unpaid interest, if any, only if the last reported sale price per share of the Company's common stock exceeds 130 % of the conversion price on:

 (1)
 each of at least 20 trading days, whether or not consecutive, during the 30 consecutive trading days ending on, and including, the trading day immediately before the date the Company sends the related redemption notice; and

 (2)
 the trading day immediately before the date the Company sends such notice.

 Calling any 2026 Convertible Notes for redemption will constitute a make-whole fundamental change, in which case the conversion rate applicable to the conversion of any 2026 Convertibles Notes, if converted in connection with the redemption, will be increased in certain circumstances for a specified period of time.

 The 2026 Convertible Notes have customary default provisions, including: (i) a default in the payment when due (whether at maturity, upon redemption or repurchase upon fundamental change or otherwise) of the principal of, or the redemption price or fundamental change repurchase price for, any note (ii) a default for 30 days in the payment when due of interest on any note (iii) a default in the Company's obligation to convert a note in accordance with the indenture, if such default is not cured within 3 calendar days after its occurrence; (iv) a default with respect to the Company's obligations under the indenture related to consolidations, mergers and asset sales; (v) a default in any of the Company's other obligations or agreements under the indenture that are not cured or waived within 60 days after notice to the Company; (vi) certain payment defaults by the Company or certain subsidiaries with respect to mortgages, agreements or other instruments for indebtedness for money borrowed of at least $ 20,000 or other defaults by the Company or certain subsidiaries with respect to such indebtedness that result in the acceleration of such indebtedness; (vii) default upon the occurrence of one or more final judgments being rendered against the Company or any of the Company's significant subsidiaries for the payment of at least $ 20,000; and (viii) certain events of bankruptcy, insolvency and reorganization with respect to the Company or any of its significant subsidiaries.

 Repurchase of a Portion of the 2026 Convertible Notes

 Contemporaneously with the offering of the 2029 Convertible Notes (as defined below), the Company entered into separate privately negotiated transactions with certain holders of the 2026 Convertible Notes to repurchase $ 117,400 aggregate principal amount of the 2026 Convertible Notes for an aggregate of $ 140,100 of cash, which includes accrued

 and unpaid interest on the 2026 Convertible Notes to be repurchased. This transaction involved a contemporaneous exchange of cash between the Company and holders of the 2026 Convertible Notes participating in the issuance of the 2029 Convertible Notes. Accordingly, the Company evaluated the transaction for modification or extinguishment accounting in accordance with Accounting Standards Codification Topic 470-50, Debt – Modifications and Extinguishments on a creditor-by-creditor basis depending on whether the exchange was determined to have substantially different terms. The repurchase of the 2026 Convertible Notes and issuance of the 2029 Convertible Notes were deemed to have substantially different terms based on the present value of the cash flows immediately prior to and after the exchange. Therefore, the repurchase of the 2026 Convertible Notes was accounted for as a debt extinguishment. The Company recorded a $ 23,504 loss on early extinguishment of debt on the consolidated statements of operations during the three months ending March 31, 2023, which includes the recognition of previously deferred financing costs of $ 2,264. The total remaining principal amount outstanding under the 2026 Convertible Notes as of December 31, 2023 was $ 26,350.

 2029 Convertible Notes
 On February 10, 2023, the Company issued 2.875 % convertible senior notes due in 2029 (the "2029 Convertible Notes") in the aggregate principal amount of $ 241,500, in a private offering to qualified institutional buyers pursuant to Section 4(a)(2) and Rule 144A under the Securities Act of 1933, as amended. The 2029 Convertible Notes were issued to finance the concurrent repurchase of a portion of the 2026 Convertible Notes, and the remainder of the net proceeds may be used for general corporate purposes. In connection with the issuance of the 2029 Convertible Notes, the Company incurred approximately $ 6,280 of debt issuance costs, which primarily consisted of underwriting, legal and other professional fees.

 The 2029 Convertible Notes are senior, unsecured obligations and bear interest at a rate of 2.875 % per year payable semi-annually in arrears on February 15 and August 15 of each year, beginning on August 15, 2023. The 2029 Convertible Notes will mature on February 15, 2029, unless earlier repurchased, redeemed or converted. Before November 15, 2028, noteholders will have the right to convert their notes only upon the occurrence of certain events. From and after November 15, 2028, noteholders may convert their notes at any time at their election until the close of business on the scheduled trading day immediately before the maturity date. The Company will settle conversions by paying or delivering, as applicable, cash, shares of the Company's common stock or a combination of cash and shares of the Company's common stock, at the Company's election. The initial conversion rate is 27.3553 shares of common stock per $1 principal amount of 2029 Convertible Notes, which represents an initial conversion price of approximately $ 36.56 per share of common stock. The conversion rate and conversion price are subject to adjustment upon the occurrence of certain events.

 Holders of the 2029 Convertible Notes may convert all or any portion of their 2029 Convertible Notes, in multiples of $1 principal amount, at their option only under the following circumstances:
 (1)
 during any calendar quarter commencing after the calendar quarter ending on June 30, 2023, if the last reported sale price per share of the Company's common stock exceeds 130 % of the conversion price for at least 20 trading days during the 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter;

 (2)
 during the five consecutive business days immediately after any 10 consecutive trading day period (such 10 consecutive trading day period, the "measurement period") in which the "trading price" per $1 principal amount of the 2029 Convertible Notes for each trading day of the measurement period was less than 98 % of the product of the last reported sale price per share of the Company's common stock on such trading day and the conversion rate on such trading day;

 (3)
 upon the occurrence of certain corporate events or distributions on the Company's common stock;

 (4)
 if the Company calls any or all of the 2029 Convertible Notes for redemption, but only with respect to the 2029 Convertible Notes called for redemption; or

 (5)
 at any time from, and including, November 15, 2028 until the close of business on the scheduled trading day immediately before the maturity date.

 As of December 31, 2023, none of the above circumstances had occurred and as such, the 2029 Convertible Notes could not have been converted.

 The Company may not redeem the 2029 Convertible Notes prior to February 17, 2026. On or after February 17, 2026 and on or before the 40 th scheduled trading day before the maturity date, the Company may redeem the 2029 Convertible Notes, in whole or in part, at a cash redemption price equal to the principal amount of the 2029 Convertible Notes to be redeemed, plus accrued and unpaid interest, if any, only if the last reported sale price per share of the Company's common stock exceeds 130 % of the conversion price on:

 (1)
 each of at least 20 trading days, whether or not consecutive, during the 30 consecutive trading days ending on, and including, the trading day immediately before the date the Company sends the related redemption notice; and

 (2)
 the trading day immediately before the date the Company sends such notice.

 However, the Company may not redeem less than all of the outstanding 2029 Convertible Notes unless at least $ 75,000 aggregate principal amount of the 2029 Convertible Notes are outstanding and not called for redemption as of the time the Company sends the related redemption notice.

 Calling any 2029 Convertible Note for redemption will constitute a make-whole fundamental change with respect to that 2029 Convertible Note, in which case the conversion rate applicable to the conversion of that 2029 Convertible Note, if it is converted in connection with the redemption, will be increased in certain circumstances for a specified period of time.
 The 2029 Convertible Notes have customary default provisions, including: (i) a default in the payment when due (whether at maturity, upon redemption or repurchase upon fundamental change or otherwise) of the principal of, or the redemption price or fundamental change repurchase price for, any note (ii) a default for 30 days in the payment when due of interest on any note (iii) a default in the Company's obligation to convert a note in accordance with the indenture, if such default is not cured within 3 business days after its occurrence; (iv) a default with respect to the Company's obligations under the indenture related to consolidations, mergers and asset sales; (v) a default in any of the Company's other obligations or agreements under the indenture that are not cured or waived within 60 days after notice to the Company; (vi) certain payment defaults by the Company or certain subsidiaries with respect to mortgages, agreements or other instruments for indebtedness for money borrowed of at least $ 30,000 or other defaults by the Company or certain subsidiaries with respect to such indebtedness that result in the acceleration of such indebtedness; (vii) default upon the occurrence of one or more final judgments being rendered against the Company or any of the Company's significant subsidiaries for the payment of at least $ 30,000; and (xiii) upon the occurrence of certain events of bankruptcy, insolvency and reorganization with respect to the Company or any of its significant subsidiaries.

 The 2026 Convertible Notes and 2029 Convertible Notes (together, the "Convertible Notes") are classified on the consolidated balance sheets as of December 31, 2023 as convertible senior notes.

 As of December 31, 2023, the Convertible Notes outstanding consisted of the following:

 2026 Convertible Notes

 2029 Convertible Notes

 Total Convertible Notes

 Principal

 $

 26,350

 $

 241,500

 $

 267,850

 Less: unamortized issuance costs

 ( 358)

 ( 5,367)

 ( 5,725)

 Net carrying amount

 $

 25,992

 $

 236,133

 $

 262,125

 The Company determined the expected life of the 2026 Convertible Notes and 2029 Convertible Notes was equal to the six-year term of each. The effective interest rate on the 2026 Convertible Notes and 2029 Convertible Notes is 3.34 % and 3.28 %, respectively. As of December 31, 2023, the if-converted value did not exceed the remaining principal amount of the Convertible Notes.

 The following table presents the total interest expense recognized related to the Convertible Notes during the years ended December 31, 2023, 2022, and 2021:

 2023

 2022

 2021

 Contractual interest expense

 $

 7,206

 $

 3,773

 $

 3,773

 Amortization of debt issuance costs

 1,166

 Total interest expense

 $

 8,372

 $

 4,680

 $

 4,675

 As of December 31, 2023, the future minimum payments on the Convertible Notes were as follows:

 Years ended December 31,

 2026 Convertible Notes

 2029 Convertible Notes

 Total Convertible Notes

 2024

 $

 $

 6,943

 $

 7,635

 2025

 6,943

 7,635

 2026

 26,696

 6,943

 33,639

 2027

 —

 6,943

 6,943

 2028

 —

 6,943

 6,943

 Thereafter

 —

 244,972

 244,972

 Total minimum payments

 $

 28,080

 $

 279,687

 $

 307,767

 Less: interest

 ( 1,730)

 ( 38,187)

 ( 39,917)

 Less: unamortized issuance costs

 ( 358)

 ( 5,367)

 ( 5,725)

 Convertible Notes carrying value

 $

 25,992

 $

 236,133

 $

 262,125

 15. Leases

 Operating Lease Arrangements

 The Company's main operating lease is for its corporate headquarters in Stoughton, Massachusetts, which was entered into in March 2018 and commenced in August 2018. This lease encompasses approximately 50,678 square feet and is for an initial 10-year term, with options for two additional five-year extensions. The initial annual base rent is $ 1,214, subject to annual increases between 2.5 % to 3.1 %.

 As of December 31, 2023, the Company's operating lease assets totaled $ 6,029 and operating lease liabilities amounted to $ 7,112. This primarily relates to the corporate headquarters lease, with other immaterial operating and embedded operating leases accounted for in the normal course of business.

 Short-Term Lease Arrangements

 In December 2018, the Company began entering into 12 -month, non-cancelable vehicle leases for its field-based employees. Each vehicle lease is executed separately and expires at varying times with automatic renewal options that are cancelable at any time. The rent expense for these leases is recognized on a straight-line basis over the lease term in the period in which it is incurred.

 Variable Lease Costs

 Variable lease costs primarily include utilities, property taxes, and other operating costs that are passed on from the lessor.

 The components of lease cost for the years ended December 31, 2023, 2022, and 2021 are as follows:

 2023

 2022

 2021

 Operating lease cost

 $

 1,306

 $

 1,805

 $

 1,305

 Short-term lease cost

 1,446

 1,492

 Variable lease cost

 Total lease cost

 $

 3,317

 $

 3,129

 $

 3,089

 The lease term and discount rate for operating leases for the years ended December 31, 2023 and 2022 are as follows:

 2023

 2022

 Weighted-average remaining lease term — operating leases (years)

 5.7

 6.6

 Weighted-average discount rate — operating leases

 6.2 %

 6.2 %

 Other information related to operating leases for the years ended December 31, 2023, 2022, and 2021 is as follows:

 2023

 2022

 2021

 Cash paid for amounts included in the measurement of operating leases liabilities

 $

 1,585

 $

 1,568

 $

 1,286

 Leased assets obtained in exchange for new operating lease liabilities

 —

 —

 —

 The Company's aggregate future minimum lease payments for its operating leases, including embedded operating lease arrangements, as of December 31, 2023, are as follows:

 Years ended December 31,

 Lease Payments

 2024

 $

 1,398

 2025

 1,436

 2026

 1,474

 2027

 1,489

 2028

 1,527

 Thereafter

 1,169

 Total minimum lease payments

 $

 8,493

 Less: Present value discount

 1,381

 Present value of lease liabilities

 $

 7,112

 16. Equity
 Common Stock
 In May 2015, the Company adopted the Amended and Restated 2014 Stock Incentive Plan (the "Plan"), under which an aggregate of 2,700,000 shares of common stock were authorized for issuance to employees, officers, directors, consultants and advisors of the Company, plus an annual increase on the first day of each fiscal year until the expiration of the Plan equal to 4 % of the total number of outstanding shares of common stock on December 31st of the immediately preceding calendar year (or a lower amount as otherwise determined by the Company's Board of Directors prior to January 1st). As of December 31, 2023, there were 1,876,424 shares of common stock available for issuance pursuant to the Plan. The Plan provides for granting of both Internal Revenue Service qualified incentive stock options and non-qualified options, restricted stock awards, restricted stock units and performance stock units. The Company's qualified incentive stock options, non-qualified options and restricted stock units generally vest ratably over a four-year period of service. The stock options generally have a ten-year contractual life and, upon termination, vested options are generally exercisable between one and three months following the termination date, while unvested options are forfeited

 immediately upon termination. Shares issued under all of the Company's plans are funded through the issuance of new shares. Refer to Note 17, Stock-based Compensation, for more information.
 Warrants
 In connection with execution of the Third Amendment to the Nucynta Commercialization Agreement, the Company issued a warrant to Assertio Therapeutics, Inc. to purchase 1,041,667 shares of common stock of the Company (the "Warrant") at an exercise price of $ 19.20 per share. The Warrant was set to expire in November 2022 and included customary adjustments for changes in the Company's capitalization. In November 2022, the Warrant was exercised through a cashless exercise and the Company issued 40,666 shares. As of December 31, 2023, there were no outstanding warrants remaining.
 Share Repurchases
 Prior Repurchase Program
 In August 2021, the Company's Board of Directors authorized the repurchase of up to $ 100,000 of shares of its common stock at any time or times through December 31, 2022 (the "Prior Repurchase Program"). The Prior Repurchase Program permitted the Company to effect repurchases through a variety of methods, including open-market purchases (including pursuant to a trading plan adopted in accordance with Rule 10b5-1 of the Exchange Act), privately negotiated transactions, or otherwise in compliance with Rule 10b-18 of the Exchange Act.
 In October 2021, the Company's Board of Directors authorized an accelerated share repurchase ("ASR") program to repurchase $ 25,000 of the Company's common stock, as part of the Company's $ 100,000 Prior Repurchase Program. Under the terms of the Company's ASR agreement with an investment bank, the Company paid $ 25,000 on November 15, 2021, and initially received 1,026,694 shares, representing 80 % of the upfront payment on a price per share of $ 19.48, the closing price on the date the agreement was executed. The remaining shares purchased by the Company were based on the volume-weighted average price of its common stock through January 7, 2022, minus an agreed upon discount between the parties. On January 7, 2022, the ASR agreement settled and the Company received an additional 307,132 shares, bringing the total shares repurchased pursuant to the ASR agreement to 1,333,826.

 The ASR agreement was accounted for as two distinct transactions: (1) an immediate repurchase of common stock, recorded as a treasury stock transaction, and (2) a forward contract indexed to the Company's own stock. The forward contract, which represented the remaining shares to be delivered by the investment bank, was recorded as a reduction to stockholders' equity and was still outstanding as of December 31, 2021.

 The Prior Repurchase Program expired on December 31, 2022. Through December 31, 2022, the Company repurchased 3,235,823 shares at a weighted-average price of $ 19.14 per share for a total of $ 61,924 under the Prior Repurchase Program. Repurchased shares were returned to the Company's pool of authorized but unissued shares. The cost of repurchased shares were recorded as treasury stock in the consolidated balance sheet. Shares repurchased under the Prior Repurchase Program resulted in an immediate reduction of shares outstanding used to calculate the weighted-average common shares outstanding for both basic and diluted earnings per share. As the Company was entitled to receive additional shares of its common stock in connection with the outstanding forward contracts, the receipt of additional shares of common stock was antidilutive. Therefore, no adjustments were made in the computation of earnings per share for the period the forwards were outstanding.
 2023 Repurchase Program

 In January 2023, the Company's Board of Directors authorized the repurchase of up to $ 100,000 of shares of its common stock at any time or times through December 31, 2023 (the "2023 Repurchase Program"). The 2023 Repurchase Program permitted the Company to effect repurchases through a variety of methods, including open-market purchases (including pursuant to a trading plan adopted in accordance with Rule 10b5-1 of the Exchange Act), privately negotiated transactions, or otherwise in compliance with Rule 10b-18 of the Exchange Act.

 In July 2023, the Company's Board of Directors authorized an ASR program to repurchase $ 50,000 of the Company's common stock, as part of the Company's $ 100,000 2023 Repurchase Program. Under the terms of the Company's ASR agreement with an investment bank, the Company paid $ 50,000 on August 7, 2023, and received 1,702,852 shares, representing 80 % of the upfront payment on a price per share of $ 23.49, the closing price on the date the agreement was executed. The remaining shares purchased by the Company were based on the volume-weighted average price of its common stock through October 31, 2023, minus an agreed upon discount between the parties. In October 2023, the ASR agreement settled and the Company received an additional 462,442 shares, bringing the total shares repurchased pursuant to the ASR agreement to 2,165,294.

 In November 2023, the Company's Board of Directors authorized a second ASR program as part of the Company's $ 100,000 2023 Repurchase Program to repurchase $ 25,000 of the Company's common stock. Under the terms of the Company's ASR agreement with an investment bank, the Company paid $ 25,000 on November 9, 2023, and received 865,426 shares, representing 80 % of the upfront payment on a price per share of $ 23.11, the closing price on the date the agreement was executed. The remaining shares purchased by the Company were based on the volume-weighted average price of its common stock through December 29, 2023, minus an agreed upon discount between the parties. In December 2023, the ASR agreement settled and the Company received an additional 57,349 shares, bringing the total shares repurchased pursuant to the ASR agreement to 922,775.

 Each ASR agreement was accounted for as two distinct transactions: (1) an immediate repurchase of common stock, recorded as a treasury stock transaction, and (2) a forward contract indexed to the Company's own stock. The forward contracts, which represented the remaining shares to be delivered by the investment bank, were recorded as a reduction to stockholders' equity. Both forward contracts associated with these ASR agreements were settled and not outstanding as of December 31, 2023.

 The 2023 Repurchase Program expired on December 31, 2023. Through December 31, 2023, the Company repurchased 3,088,069 shares at a weighted-average price of $ 24.29 per share for a total of $ 75,000 under the 2023 Repurchase Program. Repurchased shares were returned to the Company's pool of authorized but unissued shares. The cost of repurchased shares were recorded as treasury stock in the consolidated balance sheet. Shares repurchased under the 2023 Repurchase Program resulted in an immediate reduction of shares outstanding used to calculate the weighted-average common shares outstanding for both basic and diluted earnings per share. As the Company was entitled to receive additional shares of its common stock in connection with the outstanding forward contracts, the receipt of additional shares of common stock was antidilutive. Therefore, no adjustments were made in the computation of earnings per share for the period the forwards were outstanding.
 2024-2025 Repurchase Program
 In January 2024, the Company's Board of Directors authorized the repurchase of up to $ 150,000 of the Company's common stock through June 30, 2025 (the "2024-2025 Repurchase Program"). The 2024-2025 Repurchase Program permits the Company to effect repurchases through a variety of methods, including open-market purchases (including pursuant to a trading plan adopted in accordance with Rule 10b5-1 of the Exchange Act), privately negotiated transactions, or otherwise in compliance with Rule 10b-18 of the Exchange Act. The timing and amount of any shares purchased on the open market will be determined based on the Company's evaluation of the market conditions, share price and other factors. The Company plans to utilize existing cash on hand to fund share repurchases.

 17. Stock-based Compensation
 Performance Share Units, Restricted Stock Units and Stock Options
 Performance Share Units

 The Company periodically grants PSUs to certain members of the Company's senior management team. PSUs vest subject to the satisfaction of annual and cumulative performance and/or market conditions established by the Compensation Committee.

 In January 2019, the Company granted PSUs with performance conditions related to 2019, 2020, 2021 and three-year cumulative revenue goals for Xtampza ER. The PSUs were to vest following a three-year performance period, subject to the satisfaction of the performance criteria and the executive's continued employment through the performance period. PSUs may vest in a range between 0 % and 200 %, based on the satisfaction of performance criteria, and no shares will be issued if the minimum applicable performance metric is not achieved. The Company recognizes compensation expense ratably over the required service period based on its estimate of the number of shares that will vest based upon the probability of achieving the performance metrics. During the year ended December 31, 2021, the Company adjusted cumulative compensation expense based on the number of shares that vested.

 Beginning in February 2020 and each year thereafter, the Company granted PSUs with performance criteria related to the relative ranking of the total stockholder return ("TSR") of the Company's common stock for each individual year within a three-year performance period as well as the cumulative three-year performance period return relative to the TSR of certain peer companies within the S&P Pharmaceutical Select Industry Index. TSR will be measured based on the 30-day average stock price on the first day of each period compared to the 30-day average stock price on the last day of each period. The PSUs subject to the annual performance criteria will vest annually, subject to the satisfaction of the performance criteria and the executive's continued employment through the performance period. The cumulative PSUs will vest following the three-year performance period, subject to the satisfaction of the performance criteria and the executive's continued employment through the performance period. PSUs may vest in a range between 0 % and 200 %, based on the satisfaction of performance, and no shares will be issued if the minimum applicable performance metric is not achieved. As these PSUs vest based on the achievement of market conditions, the grant date fair values were determined using a Monte-Carlo valuation model. The Monte-Carlo valuation model considered a variety of potential future share prices for the Company as well as its peer companies in the selected market index.

 A summary of the Company's PSUs activity for the year ended December 31, 2023 and related information is as follows:

 Weighted-Average

 Grant Date Fair Value

 Outstanding as of December 31, 2022

 447,770

 $

 28.71

 Granted

 216,500

 38.71

 Vested

 ( 223,170)

 27.99

 Forfeited

 —

 —

 Performance adjustment

 62,780

 27.14

 Outstanding as of December 31, 2023

 503,880

 $

 33.13

 The number of PSUs awarded represents the target number of shares of common stock that may be earned; however, the actual number of shares earned may vary based on the satisfaction of performance criteria. The weighted-average grant date fair value of PSUs granted for the years ended December 31, 2023, 2022, and 2021 was $ 38.71, $ 24.12, and $ 35.15, respectively.

 For the years ended December 31, 2023, 2022, and 2021, the stock-based compensation expense for PSUs was $ 7,037, $ 5,398, and $ 4,817 respectively.
 As of December 31, 2023, the unrecognized compensation cost related to performance share units was $ 5,585 and is expected to be recognized as expense over approximately 1.6 years.
 Restricted Stock Units

 A summary of the Company's RSUs activity for the year ended December 31, 2023 and related information is as follows:

 Weighted-Average

 Grant Date Fair Value

 Outstanding as of December 31, 2022

 2,047,571

 $

 19.67

 Granted

 1,278,256

 26.25

 Vested

 ( 675,647)

 19.83

 Forfeited

 ( 206,273)

 21.91

 Outstanding as of December 31, 2023

 2,443,907

 $

 22.88

 The weighted-average grant date fair value of RSUs granted for the years ended December 31, 2023, 2022, and 2021 was $ 26.25, $ 17.53, and $ 24.23, respectively. The total fair value of RSUs vested (measured on the date of vesting) for the years ended December 31, 2023, 2022, and 2021 was $ 17,677, $ 10,166, and $ 11,165, respectively.
 As of December 31, 2023, the unrecognized compensation cost related to restricted stock units was $ 37,022 and is expected to be recognized as expense over approximately 2.6 years. The weighted-average grant date fair value of restricted stock units vested during the years ended December 31, 2023, 2022, and 2021 was $ 13,398, $ 12,547, and $ 8,526, respectively.
 Stock Options
 A summary of the Company's stock option activity for the year ended December 31, 2023 and related information is as follows:

 Weighted-

 Weighted-

 Average

 Average

 Remaining

 Aggregate

 Exercise Price

 Contractual

 Intrinsic

 per Share

 Term (in years)

 Value

 Outstanding as of December 31, 2022

 1,683,805

 $

 18.84

 5.5

 $

 7,953

 Exercised

 ( 498,008)

 17.34

 Cancelled

 ( 9,047)

 18.90

 Outstanding as of December 31, 2023

 1,176,750

 $

 19.48

 4.3

 $

 13,297

 Exercisable as of December 31, 2023

 1,158,209

 $

 19.45

 4.3

 $

 13,120

 The weighted-average assumptions used in the Black-Scholes option pricing model to determine the fair value of the employee stock option grants were as follows:

 2023

 2022

 2021

 Risk-free interest rate

 —

 %

 —

 %

 0.7

 %

 Volatility

 —

 %

 —

 %

 67.2

 %

 Expected term (years)

 —

 —

 6.0

 Expected dividend yield

 —

 %

 —

 %

 —

 %

 Risk-free Interest Rate. The risk-free interest rate assumption is based on observed interest rates appropriate for the expected term of the stock option grants.
 Expected Volatility. Due to the Company's limited operating history and lack of company-specific historical or implied volatility, the expected volatility assumption is based on the Company's volatility as well as the historical volatilities of a peer group of similar companies whose share prices are publicly available. The peer group was developed based on companies in the biotechnology and pharmaceutical industries. In evaluating similarity, the Company considers factors such as industry, stage of life cycle and size.

 Expected Term. The expected term represents the period of time that options are expected to be outstanding. Because the Company does not have historical exercise behavior through December 31, 2021, it determined the expected term assumption using the simplified method, which is an average of the contractual term of the option and its vesting period.
 Expected Dividend Yield. The expected dividend yield assumption is based on the fact that the Company has never paid cash dividends and has no present intention to pay cash dividends.
 The Company did not grant stock options during the years ended December 31, 2023 and 2022. The weighted-average grant date fair value of stock options granted for the year ended December 31, 2021 was $ 12.60. The total intrinsic value of stock options exercised for the years ended December 31, 2023, 2022, and 2021 was $ 4,786, $ 3,943, and $ 6,456, respectively.
 As of December 31, 2023, the unrecognized compensation cost related to outstanding options was $ 110 and is expected to be recognized as expense over approximately 0.2 years.
 Employee Stock Purchase Plan

 The Company's 2015 Employee Stock Purchase Plan allows employees as designated by the Company's Board of Directors to purchase shares of the Company's common stock. The purchase price is equal to 85 % of the lower of the closing price of the Company's common stock on: (i) the first day of the purchase period; or (ii) the last day of the purchase period. During the year ended December 31, 2023, 26,505 shares of common stock were purchased for total proceeds of $ 460. As of December 31, 2023, there were 2,244,157 shares of common stock authorized for issuance pursuant to the employee stock purchase plan. The expense for the years ended December 31, 2023, 2022 and 2021 was $ 209, $ 117 and $ 224 respectively.

 Stock-Based Compensation Expense
 Stock-based compensation for all stock options, restricted stock awards, restricted stock units, performance share units and for the employee stock purchase plan are reported within the following:

 2023

 2022

 2021

 Research and development

 $

 —

 $

 1,591

 $

 3,422

 21,283

 20,833

 Total stock-based compensation expense

 $

 $

 $

 24,255

 18. Income Taxes

 The provision for (benefit from) income taxes contained the following components:

 2023

 2022

 2021

 Current provision:

 Federal

 $

 21,504

 $

 $

 —

 State

 8,227

 4,540

 3,142

 29,731

 4,706

 3,142

 Deferred benefit:

 Federal

 $

 ( 1,401)

 $

 ( 4,631)

 $

 ( 61,445)

 State

 ( 752)

 ( 3,920)

 ( 16,588)

 ( 2,153)

 ( 8,551)

 ( 78,033)

 Provision for (benefit from) income taxes

 $

 27,578

 $

 ( 3,845)

 $

 ( 74,891)

 A reconciliation of income tax expense (benefit) computed at the statutory federal income tax rate to income taxes as reflected in the consolidated financial statements is as follows:

 2023

 2022

 2021

 Federal income tax expense at statutory rate

 21.0

 %

 21.0

 %

 21.0

 %

 Change resulting from:

 State income tax, net of federal benefit

 4.9

 5.0

 2.9

 Permanent difference - debt extinguishment

 7.1

 —

 —

 Permanent differences - all other

 1.3

 ( 1.9)

 ( 3.9)

 Stock compensation

 1.0

 ( 5.1)

 ( 18.8)

 Research and development credit

 —

 0.7

 16.3

 Transaction costs

 —

 ( 4.4)

 —

 Change in tax rates and other

 0.4

 ( 2.0)

 —

 Change in valuation allowance

 0.7

 —

 2,202.5

 Effective income tax rate

 36.4

 %

 13.3

 %

 2,220.0

 %

 During the year ended December 31, 2023, the effective tax rate was impacted by permanent differences, including the extinguishment of debt in connection with the repurchase of a portion of the Company's 2026 Convertible Notes, for which certain extinguishment costs were not deductible for tax purposes. Stock compensation, including the impact of excess benefits and 162(m) limitations, impacted the effective tax rate at varying percentages each year due to changes in the non-deductible amount and profit before tax. In addition, during the year ended December 31, 2022, non-deductible transaction costs resulting from the BDSI Acquisition impacted the effective tax rate. During the year ended December 31, 2021, the Company released the valuation allowance on the majority of its net operating losses, resulting in a significant discrete deferred tax benefit that impacted the effective tax rate.
 Deferred taxes are recognized for temporary differences between the basis of assets and liabilities for financial statement and income tax purposes. The significant components of the Company's deferred tax assets and liabilities are comprised of the following:

 2023

 2022

 Deferred tax assets:

 U.S. and state net operating loss carryforwards

 $

 33,800

 $

 56,982

 Research and development credits

 1,769

 5,036

 Operating lease liabilities

 1,803

 2,131

 Returns and discounts

 18,528

 19,423

 7,570

 6,776

 Accruals and other

 6,257

 5,228

 163(j) Carryforward

 —

 3,647

 Capitalized R&D

 Intangible assets

 32,771

 23,592

 Gross deferred tax assets:

 103,205

 123,744

 Valuation allowance

 ( 5,781)

 ( 5,254)

 Total deferred tax assets:

 97,424

 118,490

 Deferred tax liabilities:

 Debt discount

 ( 344)

 ( 406)

 Operating lease assets

 ( 1,529)

 ( 1,778)

 —

 ( 3,918)

 Intangible assets

 ( 65,774)

 ( 84,167)

 Property and equipment

 ( 3,518)

 ( 4,271)

 Total deferred tax liabilities:

 ( 71,165)

 ( 94,540)

 Net deferred tax assets

 $

 26,259

 $

 23,950

 The Company provides a valuation allowance when it is more-likely-than-not that deferred tax assets will not be realized. In determining the extent to which a valuation allowance for deferred tax assets is required, the Company evaluates all available evidence including projections of future taxable income, carryback opportunities, reversal of certain deferred tax liabilities, and other tax planning strategies. The Company maintains a partial valuation against its federal and state operating losses and federal R&D credits as of December 31, 2023. The valuation allowance was $ 5,781 and $ 5,254 as of December 31, 2023 and 2022, respectively, and reflects limitations based on the Company's ability to use such assets prior to expiration. The change in the valuation allowance increased the tax provision by $ 527 for the year ended December 31, 2023. The change in valuation allowance did not impact the tax provision for the year ended December 31, 2022. As a result of sustained positive earnings history through cumulative earnings over the prior three years, as of June 30, during the year ended December 31, 2021, the Company began using projections of future taxable income as a source of realizing its deferred tax assets. Accordingly, the Company recognized a deferred tax benefit of $ 78,042 for the year ended December 31, 2021 related to the reversal of valuation allowances.
 The Tax Cuts and Jobs Act of 2017 ("TCJA") will generally allow losses incurred after 2017 to be carried over indefinitely but will generally limit the net operating loss ("NOL") deduction to the lesser of the NOL carryover or 80% of a corporation's taxable income (subject to Internal Revenue Code Sections 382 and 383). Also, there will be no carryback for losses incurred after 2017. Losses incurred prior to 2018 will generally be deductible to the extent of the lesser of a corporation's NOL carryover or 100% of a corporation's taxable income (subject to Internal Revenue Code Section 382 and 383) and be available for twenty years from the period the loss was generated. As of December 31, 2023, the Company had gross U.S. federal net operating loss carryforwards of $ 137,459, of which $ 95,471 arose prior to 2018, which are available to offset future taxable income, if any, through 2037. The remaining $ 41,988 are available for an indefinite period. As of December 31, 2022, the Company had gross U.S. federal net operating loss carryforwards of $ 229,797.
 As of December 31, 2023 and 2022, the Company also had gross U.S. state net operating loss carryforwards of $ 202,381 and $ 252,597, respectively, which may be available to offset future income tax liabilities and expire at various dates through 2037.
 As of December 31, 2023 and 2022, the Company had federal research and development tax credit carryforwards of approximately $ 1,025 and $ 4,231, respectively, available to reduce future tax liabilities which expire at various dates through 2032. As of December 31, 2023 and 2022, the Company had state research and development tax credit carryforwards of approximately $ 672 and $ 832, respectively, available to reduce future tax liabilities which expire at various dates through 2036.
 The Company has completed studies to assess the impact of ownership changes, if any, on the Company's ability to use its NOL and tax credit carryovers as defined under Section 382 of the Internal Revenue Code ("IRC 382"). The Company concluded that there were ownership changes that occurred during the years 2006, 2012 and 2015 that would be subject to IRC 382 limitations. The Company acquired $ 234,675 of net operating loss carryforward from the BDSI Acquisition. The Company concluded that there were ownership changes for BDSI that occurred during the years 2006 and 2022 that would be subject to IRC 382 limitations. These IRC 382 annual limitations may limit the Company's ability to use pre-ownership change federal NOL carryovers and pre-ownership change federal tax credit carryovers. As of December 31, 2023, remaining net operating losses of $ 124,310 are subject to limitation.
 The Company files income tax returns in the United States and in several states. The federal and state income tax returns are generally subject to tax examinations for the tax years ended December 31, 2019 through December 31, 2023. To the extent the Company has tax attribute carryforwards, the tax years in which the attribute was generated may still be adjusted upon examination by the Internal Revenue Service or state tax authorities to the extent utilized in a future period.

 The Company has not recognized deferred tax assets for certain federal and state research and development credits related to uncertain tax positions, and that is included in the tabular rollforward of uncertain tax positions. A reconciliation of the beginning and ending amount of gross unrecognized tax benefits ("UTB") is as follows:

 2023

 2022

 2021

 Gross UTB Balance as of January 1

 $

 11,400

 $

 $

 Additions based on tax positions related to the current year

 —

 —

 Additions for tax positions related to acquisitions

 —

 10,930

 —

 (Reductions) additions for tax positions of prior years

 ( 94)

 ( 184)

 Gross UTB Balance as of December 31

 $

 11,306

 $

 11,400

 $

 Net UTB impacting the effective tax rate as of December 31 excluding valuation allowance impacts, if any

 $

 11,275

 $

 11,368

 $

 19. Employee Benefits
 The Company has a retirement savings plan, which is qualified under section 401(k) of the Code, for its employees. The plan allows eligible employees to defer, at the employee's discretion, pretax compensation up to the Internal Revenue Service annual limits. Employees become eligible to participate starting on the first day of employment. The Company is not required to contribute to this plan. Total expense for contributions made by the Company for the years ended December 31, 2023, 2022 and 2021 was $ 1,759, $ 1,315, and $ 1,236, respectively.

 20. Unaudited Quarterly Operating Results
 The following is a summary of unaudited quarterly results of operations for the years ended December 31, 2023 and 2022:

 First

 Second

 Third

 Fourth

 Year Ended December 31, 2023

 $

 144,767

 $

 135,546

 $

 136,709

 $

 149,745

 Cost of product revenues (excluding intangible asset amortization)

 29,899

 24,257

 20,081

 20,601

 Intangible asset amortization and impairment

 37,466

 37,463

 36,317

 34,514

 Total cost of products revenues

 67,365

 61,720

 56,398

 55,115

 Gross profit

 77,402

 73,826

 80,311

 94,630

 52,775

 38,193

 35,298

 32,942

 Total operating expenses

 52,775

 38,193

 35,298

 32,942

 Income from operations

 24,627

 35,633

 45,013

 61,688

 ( 21,427)

 ( 21,863)

 ( 20,768)

 ( 19,281)

 2,747

 4,027

 4,538

 4,303

 ( 23,504)

 —

 —

 —

 (Loss) income before income taxes

 ( 17,557)

 17,797

 28,783

 46,710

 (Benefit from) provision for income taxes

 ( 131)

 4,790

 8,149

 14,770

 Net (loss) income

 $

 ( 17,426)

 $

 13,007

 $

 20,634

 $

 31,940

 (Loss) earnings per share — basic

 $

 ( 0.51)

 $

 0.38

 $

 0.61

 $

 0.99

 Weighted-average shares — basic

 34,319,291

 34,622,284

 33,744,209

 32,301,211

 (Loss) earnings per share — diluted

 $

 ( 0.51)

 $

 0.34

 $

 0.53

 $

 0.82

 Weighted-average shares — diluted

 34,319,291

 42,849,952

 42,058,821

 41,279,981

 First

 Second

 Third

 Fourth

 Year Ended December 31, 2022

 $

 83,751

 $

 123,549

 $

 127,013

 $

 129,620

 Cost of product revenues (excluding intangible asset amortization)

 16,332

 33,684

 30,622

 37,552

 Intangible asset amortization and impairment

 18,923

 37,501

 37,552

 42,279

 Total cost of products revenues

 35,255

 71,185

 68,174

 79,831

 Gross profit

 48,496

 52,364

 58,839

 49,789

 Research and development

 3,983

 —

 —

 —

 54,528

 41,254

 38,372

 38,032

 Total operating expenses

 58,511

 41,254

 38,372

 38,032

 (Loss) income from operations

 ( 10,015)

 11,110

 20,467

 11,757

 ( 5,831)

 ( 17,761)

 ( 19,046)

 ( 20,575)

 1,027

 (Loss) income before income taxes

 ( 15,842)

 ( 6,646)

 1,432

 ( 7,791)

 (Benefit from) provision for income taxes

 ( 2,773)

 ( 1,455)

 ( 592)

 Net (loss) income

 $

 ( 13,069)

 $

 ( 5,191)

 $

 $

 ( 7,199)

 (Loss) earnings per share — basic

 $

 ( 0.39)

 $

 ( 0.15)

 $

 0.01

 $

 ( 0.21)

 Weighted-average shares — basic

 33,673,912

 34,001,553

 34,058,802

 33,582,202

 (Loss) earnings per share — diluted

 $

 ( 0.39)

 $

 ( 0.15)

 $

 0.01

 $

 ( 0.21)

 Weighted-average shares — diluted

 33,673,912

 34,001,553

 34,570,319

 33,582,202