ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Organization Assertio Therapeutics, Inc. (Assertio or the Company) is a leading diversified, specialty pharmaceutical company focused on distinctive products that offer enhanced therapeutic options for patients in need, while maintaining the highest ethical standards in all our business practices. As of March 31, 2020, the Company’s specialty pharmaceutical business consisted primarily of CAMBIA^®(diclofenac potassium for oral solution), a nonsteroidal anti-inflammatory drug for the acute treatment of migraine attacks, acquired by the Company in December 2013; and Zipsor^® (diclofenac potassium liquid filled capsules), a nonsteroidal anti-inflammatory drug for the treatment of mild to moderate acute pain, acquired by the Company in June 2012, both marketed in the U.S. In 2017, the Company announced that it was in the process of transforming into a leading diversified, specialty pharmaceutical company with a goal of rapidly deleveraging its balance sheet, growing its core business, and opportunistically building for the future via business development. The Company continues to position itself to actively pursue business development, strategic partnerships, and investment opportunities to build and grow for the future. As part of this transformational initiative, the Company executed on several strategic transactions: On December 4, 2017, the Company announced a commercialization agreement with Collegium Pharmaceutical, Inc. (Collegium), pursuant to which the Company granted Collegium the right to commercialize the NUCYNTA^®franchise of products in the U.S. (the Commercialization Agreement). Pursuant to the Commercialization Agreement, Collegium assumed all commercialization responsibilities for the NUCYNTA franchise effective January 9, 2018, including sales and marketing, and the Company received royalties on all NUCYNTA revenues based on certain net sales thresholds. On January 10, 2020, the Company completed the sale of Gralise^®(gabapentin) to Golf Acquiror LLC, an affiliate to Alvogen, Inc. (Alvogen), for total value of $127.5 million. This included $75.0 million in cash at closing, and the balance payable as 75% of Alvogen’s first $70.0 million of Gralise net sales after the closing. Alvogen also paid the Company for certain inventories relating to Gralise. On February 13, 2020, the Company entered into a definitive agreement to divest its remaining rights, title and interest in and to the NUCYNTA franchise to Collegium for $375.0 million in cash, less royalties, paid to the Company in 2020. Pursuant to the agreement, Collegium assumed certain contracts, liabilities and obligations of the Company relating to the NUCYNTA products, including those related to manufacturing and supply, post-market commitments and clinical development costs. Collegium also paid the Company for certain inventories relating to the products. On February 13, 2020, the Company had repaid in full its outstanding aggregate principal amount of senior secured notes (Senior Notes) pursuant to a Note Purchase Agreement dated March 12, 2015 (Note Purchase Agreement) and all subsequent amendments to the Note Purchase Agreement. On February 19, 2020, the Company entered into separate, privately negotiated agreements with a limited number of holders of the Company’s 2021 Notes and 2024 Notes to repurchase $188.0 million aggregate principal amount of the outstanding 2021 Notes and 2024 Notes. On March 11, 2020, the Company initiated a tender offer to repurchase any and all of the Company’s remaining $77.0 million of combined outstanding 2021 Notes and 2024 Notes. On April 8, 2020, the Company announced the completion and final results for its cash tender offers which the Company settled approximately $76.7 million aggregate principal amount of the outstanding 2021 Notes and 2024 Notes. Merger Agreement On March 16, 2020, the Company entered into an Agreement and Plan of Merger (the Merger Agreement) with Zyla Life Sciences (Zyla), Assertio Holdings, Inc., a newly created wholly-owned subsidiary of Assertio (Parent), Assertio Merger Sub, Inc., a newly created wholly-owned subsidiary of Parent (Assertio Merger Sub), and Zebra Merger Sub, Inc., a newly created wholly-owned subsidiary of Parent (Merger Sub). The Merger Agreement provides that, subject to the terms and conditions set forth therein, Merger Sub will merge with and into Zyla (the Merger), with Zyla surviving the Merger and becoming a wholly-owned subsidiary of Parent. Prior to the consummation of the Merger, Assertio intends to effect a reorganization merger (the “Assertio Reorganization”) pursuant to which Assertio Merger Sub will merge with and into Assertio, with Assertio surviving the merger and becoming a wholly-owned subsidiary of Parent. Parent will assume Assertio’s listing on the Nasdaq Stock Market (Nasdaq). The terms of the Merger Agreement provide that, unless otherwise specified in the Merger Agreement, at the effective time of the Merger, each issued and outstanding share of common stock, par value $0.001 per share, of Zyla (the Zyla Common Stock) will be canceled and automatically converted into the right to receive as merger consideration (the Merger Consideration) 2.5 shares (the Exchange Ratio) of common stock, par value $0.0001 per share, of Parent (the Parent Common Stock). The Merger and the Merger Agreement have been approved by the board of directors of each of Zyla (the Zyla Board), Assertio (the Assertio Board) and Parent (the Parent Board). Completion of the Merger is conditioned upon the adoption and approval of the Merger Agreement by (1) the holders of at least a majority of the outstanding shares of Zyla Common Stock (the Zyla Stockholder Approval) and (2) by the affirmative vote of the majority of the total votes cast to approve the issuance of the Merger Consideration by the holders of the outstanding shares of common stock of Assertio (the Assertio Stockholder Approval). Completion of the Merger is also subject to other customary closing conditions. The Merger is expected to close in the second quarter of 2020. Basis of Presentation The unaudited condensed consolidated financial statements and the related footnote information of the Company have been prepared pursuant to the requirements of the Securities and Exchange Commission (SEC) for interim reporting. As permitted under those rules and regulations, certain footnotes or other financial information that are normally required by U.S. generally accepted accounting principles (GAAP) have been condensed or omitted pursuant to such rules and regulations. In the opinion of the Company’s management, the accompanying interim unaudited condensed consolidated financial statements include all adjustments necessary for a fair presentation of the information for the periods presented. The results for the three months ended March 31, 2020 are not necessarily indicative of results to be expected for the entire year ending December 31, 2020 or future operating periods. The accompanying unaudited condensed consolidated financial statements and related financial information should be read in conjunction with the audited financial statements and the related notes thereto for the year ended December 31, 2019 included in the Company’s Annual Report on Form 10-K filed with the SEC on March 10, 2020 (the 2019 Form 10-K). The balance sheet as of December 31, 2019 has been derived from the audited financial statements at that date, as filed in the Company’s 2019 Form 10-K. In connection with the preparation of the financial statements for the three months ended March 31, 2020, the Company evaluated whether there were conditions and events, considered in the aggregate, which raised substantial doubt as to the entity's ability to continue as a going concern within twelve months after the date of the issuance of these financial statements noting that there did not appear to be evidence of substantial doubt of the entity's ability to continue as a going concern. Principles of Consolidation The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, Depomed Bermuda Ltd (Depo Bermuda), Depo NF Sub, LLC (Depo NF Sub) and Depo DR Sub, LLC (Depo DR Sub). All intercompany accounts and transactions have been eliminated in consolidation. Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Estimates are used when accounting for amounts recorded in connection with acquisitions, including initial fair value determinations of assets and liabilities as well as subsequent fair value measurements. Additionally, estimates are used in determining items such as sales discounts and returns, depreciable and amortizable lives, share-based compensation assumptions and taxes on income. Although management believes these estimates are based upon reasonable assumptions within the bounds of its knowledge of the Company’s business and operations, actual results could differ materially from these estimates. Segment Information The Company maintains one operating segment and has operations solely in the United States. To date, substantially all of the Company’s revenues from product sales are related to sales in the United States. Revenue Recognition The Company adopted ASC 606, Revenue from Contracts with Customers (ASC 606) on January 1, 2018 using the modified retrospective transition method. There was no adjustment to the Company’s opening balance of accumulated deficit resulting from the adoption of this guidance. Under ASC 606, the Company recognizes revenue when its customer obtains control of the promised goods or services, in an amount that reflects the consideration which the Company expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that the Company determines are within the scope of ASC 606, 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 Company satisfies a performance obligation. The Company only applies the five-step model to contracts when it is probable that Company will collect the consideration it is entitled to in exchange for the goods or services it transfers to the customer. At contract inception, once the contract is determined to be within the scope of ASC 606, 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 assesses the term of the contract based upon the contractual period in which the Company and Collegium have enforceable rights and obligations. Variable consideration arising from sales or usage-based royalties, promised in exchange for a license of the Company’s Intellectual Property, is recognized at the later of (i) when the subsequent product sales occur or (ii) the performance obligation, to which some or all of the sales-based royalty has been allocated, has been satisfied. The Company recognizes a contract asset relating to its conditional right to consideration for completed performance obligations. Accounts receivable are recorded when the right to consideration becomes unconditional. A contract liability is recorded for payments received in advance of the related performance obligation being satisfied under the contract. Product Sales The Company sells commercial products to wholesale distributors and specialty pharmacies. Product sales revenue is recognized when title has transferred to the customer and the customer has assumed the risks and rewards of ownership, which typically occurs on delivery to the customer. The Company’s performance obligation is to deliver product to the customer, and the performance obligation is completed upon delivery. The transaction price consists of a fixed invoice price and variable product sales allowances, which include rebates, discounts and returns. Product sales revenues are recorded net of applicable sales tax and reserves for these product sales allowances. Receivables related to product sales are typically collected one to two months after delivery. Product Sales Allowances—The Company considers products sales allowances to be variable consideration and estimates and recognizes product sales allowances as a reduction of product sales in the same period the related revenue is recognized. Product sales allowances are based on actual or estimated amounts owed on the related sales. These estimates take into consideration the terms of the Company’s agreements with customers, historical product returns, rebates or discounts taken, estimated levels of inventory in the distribution channel, the shelf life of the product and specific known market events, such as competitive pricing and new product introductions. The Company uses the most likely method in estimating product sales allowances. If actual future results vary from the Company’s estimates, the Company may need to adjust these estimates, which could have an effect on product sales and earnings in the period of adjustment. The Company’s sales allowances include: Product Returns—The Company allows customers to return product for credit with respect to that product within six months before and up to 12 months after its product expiration date. The Company estimates product returns and associated credit on NUCYNTA ER and NUCYNTA, Gralise, CAMBIA, Zipsor and Lazanda. Estimates for returns are based on historical return trends by product or by return trends of similar products, taking into consideration the shelf life of the product at the time of shipment, shipment and prescription trends, estimated distribution channel inventory levels and consideration of the introduction of competitive products. The Company did not assume financial responsibility for returns of NUCYNTA ER and NUCYNTA previously sold by Janssen Pharma or Lazanda product previously sold by Archimedes Pharma US Inc. Under the Commercialization Agreement with Collegium for NUCYNTA ER and NUCYNTA and the divestiture of Lazanda to Slán, the Company is only financially responsible for product returns for product that were sold by the Company, which are identified by specific lot numbers. The shelf life of NUCYNTA ER and NUCYNTA is 24 months to 36 months from the date of tablet manufacture. The shelf life of Gralise is 24 months to 36 months from the date of tablet manufacture. The shelf life of CAMBIA is 24 months to 48 months from the manufacture date. The shelf life of Zipsor is 36 months from the date of tablet manufacture. The shelf life of Lazanda is 24 to 36 months from the manufacture date. Because of the shelf life of the Company’s products and its return policy of issuing credits with respect to product that is returned within six months before and up to 12 months after its product expiration date, there may be a significant period of time between when the product is shipped and when the Company issues credit on a returned product. Accordingly, the Company may have to adjust these estimates, which could have an effect on product sales and earnings in the period of adjustments. Wholesaler and Pharmacy Discounts—The Company offers contractually determined discounts to certain wholesale distributors and specialty pharmacies that purchase directly from it. These discounts are either taken off invoice at the time of shipment or paid to the customer on a quarterly basis one to two months after the quarter in which product was shipped to the customer. Prompt Pay Discounts—The Company offers cash discounts to its customers (generally 2% of the sales price) as an incentive for prompt payment. Based on the Company’s experience, the Company expects its customers to comply with the payment terms to earn the cash discount. Patient Discount Programs—The Company offers patient discount co-pay assistance programs in which patients receive certain discounts off their prescriptions at participating retail and specialty pharmacies. The discounts are reimbursed by the Company approximately one month after the prescriptions subject to the discount are filled. Medicaid Rebates—The Company participates in Medicaid rebate programs, which provide assistance to certain low income patients based on each individual state’s guidelines regarding eligibility and services. Under the Medicaid rebate programs, the Company pays a rebate to each participating state, generally two to three months after the quarter in which prescriptions subject to the rebate are filled. Chargebacks—The Company provides discounts to authorized users of the Federal Supply Schedule (FSS) of the General Services Administration under an FSS contract with the Department of Veterans Affairs. These federal entities purchase products from the wholesale distributors at a discounted price, and the wholesale distributors then charge back to the Company the difference between the current retail price and the price the federal entity paid for the product. Managed Care Rebates—The Company offers discounts under contracts with certain managed care providers. The Company generally pays managed care rebates one to three months after the quarter in which prescriptions subject to the rebate are filled. Medicare Part D Coverage Gap Rebates — The Company participates in the Medicare Part D Coverage Gap Discount Program under which it provides rebates on prescriptions that fall within the “donut hole” coverage gap. The Company generally pays Medicare Part D Coverage Gap rebates two to three months after the quarter in which prescriptions subject to the rebate are filled. Commercialization Agreement The Company derived revenue under the Commercialization Agreement with Collegium whereby the Company granted Collegium the right to commercialize the NUCYNTA franchise of products in the U.S. The Company entered into the Commercialization Agreement in December 2017, which became effective in January 2018, and amended the agreement in August 2018 and in November 2018. The Company viewed its performance obligations as a series of distinct goods or services that are substantially the same and that have the same pattern of transfer. Prior to the November 2018 amendment, the consideration related to the license and facilitation services was fixed and recognized ratably over the contract term. Following the November 2018 amendment, the royalty payments represent variable consideration that are subject to the sales-based royalty exception for licenses of intellectual property and are recognized at the later of (i) when the subsequent product sales occur or (ii) the performance obligation, to which some or all of the sales-based royalty has been allocated, has been satisfied. In addition, the Company was responsible for royalty payments to a third party related to sales of NUCYNTA. Prior to the November 2018 amendment, Collegium became primarily responsible for these royalties in connection with the Commercialization Agreement; however, a portion of these payments remained the responsibility of the Company. Following the November 2018 amendment, effective January 1, 2019, Collegium became responsible for the third-party royalty payments entirely. As the Company was not actively commercializing NUCYNTA, such royalties were recorded by the Company on a systematic basis in proportion to the underlying net product sales, subject to the sales-based royalty exemption for license of intellectual property, and were included as gross-to-net adjustments in the related revenue line in the Company’s Statements of Comprehensive Income. Such amounts, over the course of the calendar year, had no net impact. In connection with the Commercialization Amendment, Collegium issued the Company a warrant to purchase up to 1,041,667 shares of Collegium common stock at an exercise price of $19.20 per share (Warrant). The Warrant is exercisable for a period of four years and contains customary terms, including with regard to net exercise. The Warrant was valued at $8.8 million as of the date of the Commercialization Amendment and is considered to be a component of the fixed consideration associated with the Commercialization Agreement. This Warrant is included in Investments on the Company’s Consolidated Balance Sheet, however, as it is non-cash it does not impact investing cash flows. Effective as of February 13, 2020, the Company divested its rights, title and interest in and to its NUCYNTA franchise of products in the U.S. to Collegium. In connection with the sale, the Commercialization Agreement terminated at closing with certain specified provisions of the Commercialization Agreement surviving in accordance with the terms of the purchase agreement. Royalties For arrangements that include sales-based royalties and the license is deemed to be the predominant item to which the royalties relate, the Company recognizes royalty revenue at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied (or partially satisfied). We currently have the right to receive royalties based on sales of CAMBIA in Canada, which are recognized as revenue when the related sales occur as there are no continuing performance obligations by the Company under those agreements. Milestones For arrangements that include milestones, the Company recognizes such revenue using the most likely method. As part of adopting ASC 606, the Company evaluated whether the future milestones should have been included as part of the transaction price in periods before January 1, 2018. The Company concluded that because of development and regulatory risks at the time, it was probable that a significant revenue reversal could have occurred. At the end of each subsequent reporting period, the Company re-evaluates the probability or achievement of each such milestone and any related constraint, and if necessary, adjusts its estimates of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenue in the period of adjustment. Leases The Company adopted ASC 842, Leases (ASC 842), on January 1, 2019 using the modified retrospective approach with cumulative effect. There was no adjustment to the Company's opening balance of accumulated deficit resulting from the adoption of this guidance. In addition, the Company elected the package of practical expedients, which among other things, allowed for the carryforward of the historical lease classification. The Company did not elect the hindsight practical expedient to determine the reasonably certain lease term for existing leases. Prior to the adoption of ASC 842, the Company accounted for its operating leases in accordance with ASC 840. Under ASC 840, only capital leases were recognized on the balance sheet and therefore the Company’s operating leases were reflected in the financial statement footnotes. The adoption of ASC 842 did not materially affect the Company’s consolidated comprehensive income. The Company assesses contracts for lease arrangements at inception. Operating right-of-use (ROU) assets and liabilities are recognized at the lease commencement date equal to the present value of future lease payments using the implicit, if readily available, or incremental borrowing rate based on the information readily available at the commencement date. ROU assets include any lease payments as of commencement and initial direct costs but exclude any lease incentives. Lease and non-lease components are generally accounted for separately and the Company recognizes operating lease expense straight-line over the term of the lease. Operating leases are included in other long term assets, other current liabilities, and other long term liabilities in the Consolidated Balance Sheet. The Company accounts for operating leases with an initial term of 12 months or less on a straight-line basis over the lease term in the Consolidated Statements of Comprehensive Income. Stock Based Compensation The Company’s stock-based compensation generally includes stock options, restricted stock units (RSUs), performance share units (PSUs), and purchases under the Company’s employee stock purchase plan (ESPP). The Company accounts for forfeitures as they occur for each type of award. Stock-based compensation expense related to restricted stock unit awards (RSUs) is based on the market value of the underlying stock on the date of grant and the related expense is recognized ratably over the requisite service period. The stock-based compensation expense related to PSUs is estimated at grant date based on the fair value of the award. The PSU awards are measured exclusively to the relative total shareholder return (TSR) performance, which is measured against the three-year TSR of a custom index of companies. The actual number of shares awarded is adjusted to between zero and 200% of the target award amount based upon achievement in each of the three independent successive one-year tranches. TSR relative to peers is considered a market condition under applicable authoritative guidance. For PSUs granted with vesting subject to market conditions, the fair value of the award is determined at grant date using the Monte Carlo model, and expense is recognized ratably over the requisite service period regardless of whether or not the market condition is satisfied. The Monte Carlo valuation model considers a variety of potential future share prices for Assertio and our peer companies in a selected market index. The Company uses the Black-Scholes option valuation model to determine the fair value of stock options and ESPP shares. The determination of the fair value of stock-based payment awards on the date of grant using an option valuation model is affected by our stock price as well as assumptions, which include the expected term of the award, the expected stock price volatility, risk-free interest rate and expected dividends over the expected term of the award. The Company uses historical option exercise data to estimate the expected term of the options. The Company estimates the volatility of our common stock price by using the historical volatility over the expected term of the options. The Company bases the risk-free interest rate on U.S. Treasury zero coupon issues with terms similar to the expected term of the options as of the date of grant. The Company does not anticipate paying any cash dividends in the foreseeable future, and therefore, uses an expected dividend yield of zero in the option valuation model. Stock-based compensation expense related to the ESPP and options is recognized on a straight-line basis over its respective term. Recently Adopted Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13 Financial Instruments-Credit Losses (ASU 2016-13 or Topic 326): Measurement of Credit Losses on Financial Instruments, which requires the measurement and recognition of expected credit losses for financial assets held at amortized cost. ASU 2016-13 replaces the existing incurred loss impairment model with an expected loss methodology, which will result in more timely recognition of credit losses. The Company adopted this standard on January 1, 2020 and updated its internal controls to include certain forward-looking considerations in the current process of developing and recognizing credit losses for in scope financial assets, which primarily included accounts receivable and a $3.5 million investment in a company engaged in medical research. ASC 326 had an immaterial impact to our allowance for credit losses reported in accounts receivable on our Condensed Consolidated Balance Sheet upon adoption. The investment is structured as a long-term loan receivable with a convertible feature and carried at amortized cost with accruing interest. To calculate the expected credit loss allowance, the Company utilized a probability-of-default method (PDM). This process estimates the probability of the loan being successfully paid back or converted into equity based on the ability of the investee to obtain FDA acceptance of its research. Using a PDM, we calculated an expected credit loss allowance at March 31, 2020 of $1.9 million, which was recorded in Other (expense) income in the Company’s Consolidated Statement of Comprehensive Income and included in Investments, net in the Company’s Consolidated Balance Sheet. Our expected credit losses can vary from period to period based on several factors, such as progress of the medical research and FDA submission, and overall economic environment and the ability of the investee to fund its operations. The primary factor that contributed to our provision for expected credit losses in the first quarter of 2020 was an evaluation of probability of default to exist based on the outlook of the macro environment due to the COVID-19 pandemic and its impact to delay the FDA acceptance process combined with the investee’s ability to fund its operations and raise capital if required. In June 2018, the FASB issued ASU 2018-18 Collaborative Arrangements (ASU 2018-18), which clarifies the interaction between ASC 808, Collaborative Arrangements (ASC 808) and ASC 606, Revenue from Contracts with Customers (ASC 606). The update clarifies that certain transactions between participants in a collaborative arrangement should be accounted for under ASC 606 when the counterparty is a customer. In addition, the update precludes an entity from presenting consideration from a transaction in a collaborative arrangement as revenue if the counterparty is not a customer for that transaction. The Company adopted the standard as of January 1, 2020 and have applied modified retrospective transition method to the date of initial application of ASC 606. The adoption of this guidance did not have a material impact on the Company’s condensed consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-15, Accounting for Cloud Computing Arrangements (Subtopic 350-40), which provides new guidance on the accounting for implementation, set-up, and other upfront costs incurred in a hosted cloud computing arrangement. Under the new guidance, entities will apply the same criteria for capitalizing implementation costs as they would for an internal-use software license arrangement. Effective January 1, 2020, the Company adopted the standard using the prospective approach to eligible costs incurred on or after the date of adoption. The adoption of this guidance did not have a material impact on the Company’s condensed consolidated financial statements. In August 2018, the FASB issued ASU 2018-13 Fair Value Measurement Disclosure Framework (ASU 2018-03), which is part of a broader disclosure framework project by the FASB to improve the effectiveness of disclosures by more clearly communicating the information to the user. The Company adopted the standard as of January 1, 2020 and included these disclosures in the condensed consolidated financial statements. The additional elements of this release did not impact the Company's condensed consolidated financial statements. In December 2019, the FASB issued ASU 2019-12, Income Taxes (ASU 2019-02): Simplifying the Accounting for Income Taxes which simplifies the accounting for income taxes by removing certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period, and by clarifying and amending existing guidance in order to improve consistent application of and simplify GAAP for other areas of Topic 740. ASU 2019-12 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2020. Early adoption is permitted, including adoption in an interim period. The Company early adopted the standard effective January 1, 2020. The new standard was applied to the presentation of the Company’s reacquisition of $0.3 million and $16.5 million in equity component of the 2021 and 2024 Notes, respectively, as a result of the private purchase in February 2020. Recently Issued Accounting Standards In March 2020, the FASB issued ASU 2020-04 Reference Rate Reform (ASC 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The ASU provides optional expedients and exceptions to the US GAAP guidance on contract modifications and hedge accounting to ease the financial reporting burdens related to the expected market transition from the London Interbank Offered Rate (LIBOR) and other interbank offered rates to alternative reference rates. The amendments in the ASU are effective for all entities as of March 12, 2020 through December 31, 2022. The Company is currently evaluating the impact this guidance may have on its consolidated financial statements and related disclosures.

As of March 31, 2020, the Company’s specialty pharmaceutical business consisted primarily of CAMBIA^®(diclofenac potassium for oral solution), a nonsteroidal anti-inflammatory drug for the acute treatment of migraine attacks, acquired by the Company in December 2013; and Zipsor^® (diclofenac potassium liquid filled capsules), a nonsteroidal anti-inflammatory drug for the treatment of mild to moderate acute pain, acquired by the Company in June 2012, both marketed in the U.S.

In 2017, the Company announced that it was in the process of transforming into a leading diversified, specialty pharmaceutical company with a goal of rapidly deleveraging its balance sheet, growing its core business, and opportunistically building for the future via business development. The Company continues to position itself to actively pursue business development, strategic partnerships, and investment opportunities to build and grow for the future. As part of this transformational initiative, the Company executed on several strategic transactions:

On December 4, 2017, the Company announced a commercialization agreement with Collegium Pharmaceutical, Inc. (Collegium), pursuant to which the Company granted Collegium the right to commercialize the NUCYNTA^®franchise of products in the U.S. (the Commercialization Agreement). Pursuant to the Commercialization Agreement, Collegium assumed all commercialization responsibilities for the NUCYNTA franchise effective January 9, 2018, including sales and marketing, and the Company received royalties on all NUCYNTA revenues based on certain net sales thresholds.

On January 10, 2020, the Company completed the sale of Gralise^®(gabapentin) to Golf Acquiror LLC, an affiliate to Alvogen, Inc. (Alvogen), for total value of $127.5 million. This included $75.0 million in cash at closing, and the balance payable as 75% of Alvogen’s first $70.0 million of Gralise net sales after the closing. Alvogen also paid the Company for certain inventories relating to Gralise.

On February 13, 2020, the Company entered into a definitive agreement to divest its remaining rights, title and interest in and to the NUCYNTA franchise to Collegium for $375.0 million in cash, less royalties, paid to the Company in 2020. Pursuant to the agreement, Collegium assumed certain contracts, liabilities and obligations of the Company relating to the NUCYNTA products, including those related to manufacturing and supply, post-market commitments and clinical development costs. Collegium also paid the Company for certain inventories relating to the products.

On March 11, 2020, the Company initiated a tender offer to repurchase any and all of the Company’s remaining $77.0 million of combined outstanding 2021 Notes and 2024 Notes. On April 8, 2020, the Company announced the completion and final results for its cash tender offers which the Company settled approximately $76.7 million aggregate principal amount of the outstanding 2021 Notes and 2024 Notes.

created wholly-owned subsidiary of Parent (Merger Sub). The Merger Agreement provides that, subject to the terms and conditions set forth therein, Merger Sub will merge with and into Zyla (the Merger), with Zyla surviving the Merger and becoming a wholly-owned subsidiary of Parent. Prior to the consummation of the Merger, Assertio intends to effect a reorganization merger (the “Assertio Reorganization”) pursuant to which Assertio Merger Sub will merge with and into Assertio, with Assertio surviving the merger and becoming a wholly-owned subsidiary of Parent. Parent will assume Assertio’s listing on the Nasdaq Stock Market (Nasdaq).

The terms of the Merger Agreement provide that, unless otherwise specified in the Merger Agreement, at the effective time of the Merger, each issued and outstanding share of common stock, par value $0.001 per share, of Zyla (the Zyla Common Stock) will be canceled and automatically converted into the right to receive as merger consideration (the Merger Consideration) 2.5 shares (the Exchange Ratio) of common stock, par value $0.0001 per share, of Parent (the Parent Common Stock).

The Merger and the Merger Agreement have been approved by the board of directors of each of Zyla (the Zyla Board), Assertio (the Assertio Board) and Parent (the Parent Board). Completion of the Merger is conditioned upon the adoption and approval of the Merger Agreement by (1) the holders of at least a majority of the outstanding shares of Zyla Common Stock (the Zyla Stockholder Approval) and (2) by the affirmative vote of the majority of the total votes cast to approve the issuance of the Merger Consideration by the holders of the outstanding shares of common stock of Assertio (the Assertio Stockholder Approval). Completion of the Merger is also subject to other customary closing conditions. The Merger is expected to close in the second quarter of 2020.

The unaudited condensed consolidated financial statements and the related footnote information of the Company have been prepared pursuant to the requirements of the Securities and Exchange Commission (SEC) for interim reporting. As permitted under those rules and regulations, certain footnotes or other financial information that are normally required by U.S. generally accepted accounting principles (GAAP) have been condensed or omitted pursuant to such rules and regulations. In the opinion of the Company’s management, the accompanying interim unaudited condensed consolidated financial statements include all adjustments necessary for a fair presentation of the information for the periods presented. The results for the three months ended March 31, 2020 are not necessarily indicative of results to be expected for the entire year ending December 31, 2020 or future operating periods.

The accompanying unaudited condensed consolidated financial statements and related financial information should be read in conjunction with the audited financial statements and the related notes thereto for the year ended December 31, 2019 included in the Company’s Annual Report on Form 10-K filed with the SEC on March 10, 2020 (the 2019 Form 10-K). The balance sheet as of December 31, 2019 has been derived from the audited financial statements at that date, as filed in the Company’s 2019 Form 10-K.

In connection with the preparation of the financial statements for the three months ended March 31, 2020, the Company evaluated whether there were conditions and events, considered in the aggregate, which raised substantial doubt as to the entity's ability to continue as a going concern within twelve months after the date of the issuance of these financial statements noting that there did not appear to be evidence of substantial doubt of the entity's ability to continue as a going concern.

The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Estimates are used when accounting for amounts recorded in connection with acquisitions, including initial fair value determinations of assets and liabilities as well as subsequent fair value measurements. Additionally, estimates are used in determining items such as sales discounts and returns, depreciable and amortizable lives, share-based compensation assumptions and taxes on income. Although management believes these estimates are based upon reasonable assumptions

Under ASC 606, the Company recognizes revenue when its customer obtains control of the promised goods or services, in an amount that reflects the consideration which the Company expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that the Company determines are within the scope of ASC 606, 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 Company satisfies a performance obligation. The Company only applies the five-step model to contracts when it is probable that Company will collect the consideration it is entitled to in exchange for the goods or services it transfers to the customer. At contract inception, once the contract is determined to be within the scope of ASC 606, 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 assesses the term of the contract based upon the contractual period in which the Company and Collegium have enforceable rights and obligations.

The Company sells commercial products to wholesale distributors and specialty pharmacies. Product sales revenue is recognized when title has transferred to the customer and the customer has assumed the risks and rewards of ownership, which typically occurs on delivery to the customer. The Company’s performance obligation is to deliver product to the customer, and the performance obligation is completed upon delivery. The transaction price consists of a fixed invoice price and variable product sales allowances, which include rebates, discounts and returns. Product sales revenues are recorded net of applicable sales tax and reserves for these product sales allowances. Receivables related to product sales are typically collected one to two months after delivery.

Product Sales Allowances—The Company considers products sales allowances to be variable consideration and estimates and recognizes product sales allowances as a reduction of product sales in the same period the related revenue is recognized. Product sales allowances are based on actual or estimated amounts owed on the related sales. These estimates take into consideration the terms of the Company’s agreements with customers, historical product returns, rebates or discounts taken, estimated levels of inventory in the distribution channel, the shelf life of the product and specific known market events, such as competitive pricing and new product introductions. The Company uses the most likely method in estimating product sales allowances. If actual future results vary from the Company’s estimates, the Company may need to adjust these estimates, which could have an effect on product sales and earnings in the period of adjustment. The Company’s sales allowances include:

Product Returns—The Company allows customers to return product for credit with respect to that product within six months before and up to 12 months after its product expiration date. The Company estimates product returns and associated credit on NUCYNTA ER and NUCYNTA, Gralise, CAMBIA, Zipsor and Lazanda. Estimates for returns are based on historical return trends by product or by return trends of similar products, taking into consideration the shelf life of the product at the time

of shipment, shipment and prescription trends, estimated distribution channel inventory levels and consideration of the introduction of competitive products. The Company did not assume financial responsibility for returns of NUCYNTA ER and NUCYNTA previously sold by Janssen Pharma or Lazanda product previously sold by Archimedes Pharma US Inc. Under the Commercialization Agreement with Collegium for NUCYNTA ER and NUCYNTA and the divestiture of Lazanda to Slán, the Company is only financially responsible for product returns for product that were sold by the Company, which are identified by specific lot numbers.

The shelf life of NUCYNTA ER and NUCYNTA is 24 months to 36 months from the date of tablet manufacture. The shelf life of Gralise is 24 months to 36 months from the date of tablet manufacture. The shelf life of CAMBIA is 24 months to 48 months from the manufacture date. The shelf life of Zipsor is 36 months from the date of tablet manufacture. The shelf life of Lazanda is 24 to 36 months from the manufacture date. Because of the shelf life of the Company’s products and its return policy of issuing credits with respect to product that is returned within six months before and up to 12 months after its product expiration date, there may be a significant period of time between when the product is shipped and when the Company issues credit on a returned product. Accordingly, the Company may have to adjust these estimates, which could have an effect on product sales and earnings in the period of adjustments.

Medicaid Rebates—The Company participates in Medicaid rebate programs, which provide assistance to certain low income patients based on each individual state’s guidelines regarding eligibility and services. Under the Medicaid rebate programs, the Company pays a rebate to each participating state, generally two to three months after the quarter in which prescriptions subject to the rebate are filled.

Chargebacks—The Company provides discounts to authorized users of the Federal Supply Schedule (FSS) of the General Services Administration under an FSS contract with the Department of Veterans Affairs. These federal entities purchase products from the wholesale distributors at a discounted price, and the wholesale distributors then charge back to the Company the difference between the current retail price and the price the federal entity paid for the product.

The Company derived revenue under the Commercialization Agreement with Collegium whereby the Company granted Collegium the right to commercialize the NUCYNTA franchise of products in the U.S. The Company entered into the Commercialization Agreement in December 2017, which became effective in January 2018, and amended the agreement in August 2018 and in November 2018. The Company viewed its performance obligations as a series of distinct goods or services that are substantially the same and that have the same pattern of transfer. Prior to the November 2018 amendment, the consideration related to the license and facilitation services was fixed and recognized ratably over the contract term. Following the November 2018 amendment, the royalty payments represent variable consideration that are subject to the sales-based royalty exception for licenses of intellectual property and are recognized at the later of (i) when the subsequent product sales occur or (ii) the performance obligation, to which some or all of the sales-based royalty has been allocated, has been satisfied.

In addition, the Company was responsible for royalty payments to a third party related to sales of NUCYNTA. Prior to the November 2018 amendment, Collegium became primarily responsible for these royalties in connection with the Commercialization Agreement; however, a portion of these payments remained the responsibility of the Company. Following the November 2018 amendment, effective January 1, 2019, Collegium became responsible for the third-party royalty payments entirely. As the Company was not actively commercializing NUCYNTA, such royalties were recorded by the Company on a systematic basis in proportion to the underlying net product sales, subject to the sales-based royalty exemption for license of intellectual property, and were included as gross-to-net adjustments in the related revenue line in the Company’s Statements of Comprehensive Income. Such amounts, over the course of the calendar year, had no net impact.

In connection with the Commercialization Amendment, Collegium issued the Company a warrant to purchase up to 1,041,667 shares of Collegium common stock at an exercise price of $19.20 per share (Warrant). The Warrant is exercisable for a period of four years and contains customary terms, including with regard to net exercise. The Warrant was valued at $8.8 million as of the date of the Commercialization Amendment and is considered to be a component of the fixed consideration associated with the Commercialization Agreement. This Warrant is included in Investments on the Company’s Consolidated Balance Sheet, however, as it is non-cash it does not impact investing cash flows.

For arrangements that include milestones, the Company recognizes such revenue using the most likely method. As part of adopting ASC 606, the Company evaluated whether the future milestones should have been included as part of the transaction price in periods before January 1, 2018. The Company concluded that because of development and regulatory risks at the time, it was probable that a significant revenue reversal could have occurred. At the end of each subsequent reporting period, the Company re-evaluates the probability or achievement of each such milestone and any related constraint, and if necessary, adjusts its estimates of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect revenue in the period of adjustment.

The Company adopted ASC 842, Leases (ASC 842), on January 1, 2019 using the modified retrospective approach with cumulative effect. There was no adjustment to the Company's opening balance of accumulated deficit resulting from the adoption of this guidance. In addition, the Company elected the package of practical expedients, which among other things, allowed for the carryforward of the historical lease classification. The Company did not elect the hindsight practical expedient to determine the reasonably certain lease term for existing leases. Prior to the adoption of ASC 842, the Company accounted for its operating leases in accordance with ASC 840. Under ASC 840, only capital leases were recognized on the balance sheet and therefore the Company’s operating leases were reflected in the financial statement footnotes. The adoption of ASC 842 did not materially affect the Company’s consolidated comprehensive income.

The Company assesses contracts for lease arrangements at inception. Operating right-of-use (ROU) assets and liabilities are recognized at the lease commencement date equal to the present value of future lease payments using the implicit, if readily available, or incremental borrowing rate based on the information readily available at the commencement date. ROU assets include any lease payments as of commencement and initial direct costs but exclude any lease incentives. Lease and non-lease components are generally accounted for separately and the Company recognizes operating lease expense straight-line over the term of the lease. Operating leases are included in other long term assets, other current liabilities, and other long term liabilities in the Consolidated Balance Sheet.

The Company’s stock-based compensation generally includes stock options, restricted stock units (RSUs), performance share units (PSUs), and purchases under the Company’s employee stock purchase plan (ESPP). The Company accounts for forfeitures as they occur for each type of award. Stock-based compensation expense related to restricted stock unit awards (RSUs) is based on the market value of the underlying stock on the date of grant and the related expense is recognized ratably over the requisite service period.

The stock-based compensation expense related to PSUs is estimated at grant date based on the fair value of the award. The PSU awards are measured exclusively to the relative total shareholder return (TSR) performance, which is measured against the three-year TSR of a custom index of companies. The actual number of shares awarded is adjusted to between zero and 200% of the target award amount based upon achievement in each of the three independent successive one-year tranches. TSR relative to peers is considered a market condition under applicable authoritative guidance. For PSUs granted with vesting subject to market conditions, the fair value of the award is determined at grant date using the Monte Carlo model, and expense is recognized ratably over the requisite service period regardless of whether or not the market condition is satisfied. The Monte Carlo valuation model considers a variety of potential future share prices for Assertio and our peer companies in a selected market index.

The Company uses the Black-Scholes option valuation model to determine the fair value of stock options and ESPP shares. The determination of the fair value of stock-based payment awards on the date of grant using an option valuation model is affected by our stock price as well as assumptions, which include the expected term of the award, the expected stock price volatility, risk-free interest rate and expected dividends over the expected term of the award. The Company uses historical option exercise data to estimate the expected term of the options. The Company estimates the volatility of our common stock price by using the historical volatility over the expected term of the options. The Company bases the risk-free interest rate on U.S. Treasury zero coupon issues with terms similar to the expected term of the options as of the date of grant. The Company does not anticipate paying any cash dividends in the foreseeable future, and therefore, uses an expected dividend yield of zero in the option valuation model. Stock-based compensation expense related to the ESPP and options is recognized on a straight-line basis over its respective term.

In June 2016, the FASB issued ASU 2016-13 Financial Instruments-Credit Losses (ASU 2016-13 or Topic 326): Measurement of Credit Losses on Financial Instruments, which requires the measurement and recognition of expected credit losses for financial assets held at amortized cost. ASU 2016-13 replaces the existing incurred loss impairment model with an expected loss methodology, which will result in more timely recognition of credit losses. The Company adopted this standard on January 1, 2020 and updated its internal controls to include certain forward-looking considerations in the current process of developing and recognizing credit losses for in scope financial assets, which primarily included accounts receivable and a $3.5 million investment in a company engaged in medical research. ASC 326 had an immaterial impact to our allowance for credit losses reported in accounts receivable on our Condensed Consolidated Balance Sheet upon adoption. The investment is structured as a long-term loan receivable with a convertible feature and carried at amortized cost with accruing interest. To calculate the expected credit loss allowance, the Company utilized a probability-of-default method (PDM). This process estimates the probability of the loan being successfully paid back or converted into equity based on the ability of the investee to obtain FDA acceptance of its research. Using a PDM, we calculated an expected credit loss allowance at March 31, 2020 of $1.9 million, which was recorded in Other (expense) income in the Company’s Consolidated Statement of Comprehensive Income and included in Investments, net in the Company’s Consolidated Balance Sheet. Our expected credit losses can vary from period to period based on several factors, such as progress of the medical research and FDA submission, and overall economic environment and the ability of the investee to fund its operations. The primary factor that contributed to our provision

In June 2018, the FASB issued ASU 2018-18 Collaborative Arrangements (ASU 2018-18), which clarifies the interaction between ASC 808, Collaborative Arrangements (ASC 808) and ASC 606, Revenue from Contracts with Customers (ASC 606). The update clarifies that certain transactions between participants in a collaborative arrangement should be accounted for under ASC 606 when the counterparty is a customer. In addition, the update precludes an entity from presenting consideration from a transaction in a collaborative arrangement as revenue if the counterparty is not a customer for that transaction. The Company adopted the standard as of January 1, 2020 and have applied modified retrospective transition method to the date of initial application of ASC 606. The adoption of this guidance did not have a material impact on the Company’s condensed consolidated financial statements.

In August 2018, the FASB issued ASU No. 2018-15, Accounting for Cloud Computing Arrangements (Subtopic 350-40), which provides new guidance on the accounting for implementation, set-up, and other upfront costs incurred in a hosted cloud computing arrangement. Under the new guidance, entities will apply the same criteria for capitalizing implementation costs as they would for an internal-use software license arrangement. Effective January 1, 2020, the Company adopted the standard using the prospective approach to eligible costs incurred on or after the date of adoption. The adoption of this guidance did not have a material impact on the Company’s condensed consolidated financial statements.

In August 2018, the FASB issued ASU 2018-13 Fair Value Measurement Disclosure Framework (ASU 2018-03), which is part of a broader disclosure framework project by the FASB to improve the effectiveness of disclosures by more clearly communicating the information to the user. The Company adopted the standard as of January 1, 2020 and included these disclosures in the condensed consolidated financial statements. The additional elements of this release did not impact the Company's condensed consolidated financial statements.

In December 2019, the FASB issued ASU 2019-12, Income Taxes (ASU 2019-02): Simplifying the Accounting for Income Taxes which simplifies the accounting for income taxes by removing certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period, and by clarifying and amending existing guidance in order to improve consistent application of and simplify GAAP for other areas of Topic 740. ASU 2019-12 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2020. Early adoption is permitted, including adoption in an interim period. The Company early adopted the standard effective January 1, 2020. The new standard was applied to the presentation of the Company’s reacquisition of $0.3 million and $16.5 million in equity component of the 2021 and 2024 Notes, respectively, as a result of the private purchase in February 2020.

In March 2020, the FASB issued ASU 2020-04 Reference Rate Reform (ASC 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The ASU provides optional expedients and exceptions to the US GAAP guidance on contract modifications and hedge accounting to ease the financial reporting burdens related to the expected market transition from the London Interbank Offered Rate (LIBOR) and other interbank offered rates to alternative reference rates. The amendments in the ASU are effective for all entities as of March 12, 2020 through December 31, 2022. The Company is currently evaluating the impact this guidance may have on its consolidated financial statements and related disclosures.