Business Overview, Basis of Presentation, and Recently Issued Accounting Standards	9 Months Ended
Sep. 30, 2026
Accounting Policies [Abstract]
Business Overview, Basis of Presentation, and Recently Issued Accounting Standards	1. Business Overview, Basis of Presentation, and Recently Issued Accounting Standards Business Overview Indivior Pharmaceuticals, Inc. and its subsidiaries (together, "Indivior" or the "Company") is the leader in long-acting injectable medications for opioid use disorder (OUD). The Company's core products include SUBLOCADE (buprenorphine extended-release monthly injection) and SUBOXONE Film (buprenorphine and naloxone sublingual film), both of which are treatments for OUD. On August 1, 2026, Indivior Pharmaceuticals, Inc., a Delaware corporation (“Indivior”) and Artemis Merger Sub Inc., a Delaware corporation and a wholly owned subsidiary of Indivior (“Merger Sub”), entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Supernus Pharmaceuticals, Inc., a Delaware corporation (prior to the Effective Time (as defined below), “Supernus”). The Merger Agreement provides that, upon the terms and subject to the conditions set forth in the Merger Agreement, the Company's Merger Sub, a wholly owned subsidiary, will merge with and into Supernus (the “Merger”), with Supernus continuing as the surviving company, and as a wholly-owned subsidiary of Indivior following the transaction. As a result of the Merger, Indivior will change its name to Supernus, Inc. (subsequent to the Effective Time, the “Combined Company”). Subject to the terms and conditions of the Merger Agreement, at the effective time of the Merger (the “Effective Time”) and as a result of the Merger, each share of common stock of Supernus issued and outstanding immediately prior to the Effective Time will be converted into the right to receive 1.5401 shares of common stock of Indivior and cash in lieu of fractional shares. Additionally, at the Effective Time and as a result of the Merger, outstanding Supernus equity awards will be automatically converted into Indivior equity awards. RSUs and stock options will generally retain their existing vesting and other terms, while PSUs will be converted into time-based RSUs and the related performance conditions will cease to apply. The conversion of the equity awards will occur at the same exchange ratio as applies to Supernus common stock in the Merger; the exercise price of converted Supernus stock options will also be correspondingly adjusted. In connection with a termination of the Merger Agreement in certain limited circumstances, Indivior could be required to pay a termination fee to Supernus in the amount of $174 million and Supernus could be required to pay a termination fee to Indivior of $101 million. Upon completion of the Merger, Indivior stockholders are expected to own approximately 56.5% of the Combined Company on a fully diluted basis and Supernus stockholders will own approximately 43.5% of the Combined Company on a fully diluted basis. Indivior declared a special cash dividend in an aggregate amount of $1,000 million, which will be payable to (i) holders of record of the issued and outstanding Indivior Common Stock as of the October 30, 2026 record date and (ii) holders of certain Indivior equity awards outstanding as of such date with respect to the Indivior Common Stock underlying such Indivior equity award, with such special dividend to be paid following the Effective Time (the "Special Dividend"). In connection with the Merger Agreement and the Special Dividend, Indivior entered into a commitment letter with Citibank, N.A. pursuant to which Citibank, N.A. has committed to provide, subject to the terms and conditions thereof, a senior secured term loan facility in an aggregate principal amount of $650 million. Proceeds from the senior secured term loan facility, together with cash on hand of the combined company, are expected to be used to fund the Special Dividend. Pursuant to the terms of the Merger Agreement, as of the Effective Time of the Merger, (i) the board of directors of Combined Company will consist of eight individuals, including four individuals who are nominees of the board of directors of Indivior immediately prior to the Effective Time of the merger and four individuals who are nominees of the board of directors of Supernus immediately prior to the Effective Time of the Merger; (ii) Jack A. Khattar will serve as Chief Executive Officer and as a member of the Combined Company board; and (iii) Timothy C. Dec will serve as Chief Financial Officer. The Company has concluded that Supernus Pharmaceuticals, Inc. (“Supernus”) will be the accounting acquirer in the merger under Accounting Standards Codification (“ASC”) 805, Business Combinations. Because Indivior will be the legal parent and issuer of the equity consideration while Supernus is the accounting acquirer, the transaction will be accounted for as a reverse acquisition under ASC 805-40. On October 15, 2026, Indivior's stockholders approved the issuance of shares of common stock of Indivior (par value $0.001 per share) in connection with the proposed merger. Also on October 15, 2026, Supernus stockholders approved certain proposals related to the merger. The transaction is expected to close on or about November 2, 2026, subject to the satisfaction or waiver of other specified closing conditions. Basis of Presentation The accompanying unaudited interim Condensed Consolidated Financial Statements and related notes should be read in conjunction with the audited Consolidated Financial Statements of Indivior Pharmaceuticals, Inc. and its subsidiaries and related notes as contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025. The unaudited interim financial statements include all adjustments (consisting only of normal recurring adjustments) and accruals necessary in the judgment of management for a fair statement of the results for the periods presented. Certain prior‑period amounts have been reclassified to conform to the current‑period presentation. These reclassifications had no impact on previously reported net income, comprehensive income, or cash flows. The accounting policies of the Company are consistent with those disclosed in "Item 1. Financial Statements - Note 2. Summary of Significant Accounting Policies" of the Company's Annual Report on Form 10-K for the year ended December 31, 2025. Columns and rows within tables may not add due to rounding. Percentages and per share data have been calculated using actual, non-rounded figures. 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. Significant estimates are used in determining items such as accruals for returns, incentives and rebates, certain accrued expenses, acquisitions, and ongoing litigation. Actual results may differ from those estimates. Recently Adopted Accounting Standards ASU 2024-04, Debt - Debt with Conversion and Other Options (Subtopic 470-20): Induced Conversions of Convertible Debt Instruments, was issued in November 2024 and clarifies the requirements for determining whether certain settlements of convertible debt instruments should be accounted for as induced conversions or debt extinguishments. ASU 2024-04 is effective for annual and interim periods beginning after December 15, 2025. The Company adopted ASU 2024-04 effective January 1, 2026 and applied the guidance on a prospective basis. The adoption of ASU 2024-04 did not have a material impact on the Company's condensed consolidated financial statements. ASU 2025-05, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets was issued in July 2025 and allows entities to elect a practical expedient that assumes that the current conditions as of the balance sheet date do not change for the remaining life of the asset. ASU No. 2025-05 is effective for annual and interim periods beginning after December 15, 2025. The Company adopted ASU 2025-05 effective January 1, 2026 and applied the guidance on a prospective basis. The adoption of ASU 2025‑05 did not have a material impact on the Company’s condensed consolidated financial statements. ASU 2025‑07, Derivatives and Hedging (Topic 815) and Revenue from Contracts with Customers (Topic 606): Derivatives Scope Refinements and Scope Clarification for Share‑Based Noncash Consideration from a Customer in a Revenue Contract refines the scope of derivative accounting under Topic 815 by introducing a new scope exception for certain contracts or embedded features that are not exchange traded and have underlyings based on the operations or activities specific to one of the parties to the contract. In addition, the ASU clarifies that share‑based noncash consideration received from a customer in exchange for goods or services is initially accounted for under Topic 606, Revenue from Contracts with Customers, unless and until the entity’s right to receive or retain such consideration becomes unconditional. The Company early adopted ASU 2025‑07 effective January 1, 2026 and applied the guidance on a prospective basis. The adoption of ASU 2025‑07 did not have a material impact on the Company’s condensed consolidated financial statements. Recently Issued Accounting Standards Not Yet Adopted ASU 2024-03: Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40)—Disaggregation of Income Statement Expenses (as clarified by ASU 2025-01) was issued in November 2024, requires disclosure of specified information about certain costs and expenses in the notes to the financial statements and is required to be applied by the Company for annual periods beginning after December 31, 2026 and interim periods beginning after December 15, 2027. As this accounting standard only impacts disclosures, it is not expected to have a material impact on the Company’s financial statements. ASU No. 2025-06, Intangibles-Goodwill and Other-Internal Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software was issued in September 2025 and removes all references to software development project stages. Software capitalization will begin when management has authorized and committed to funding the software project and when it is probable that the project will be completed and the software will be used to perform the function intended. ASU 2025-06 is effective for interim and annual periods beginning after December 15, 2027. The guidance may be applied on a prospective basis, a modified transition approach or a retrospective transition approach and allows for early adoption. Adoption is not expected to have a material impact on the Company's financial statements.

Indivior Pharmaceuticals, Inc. and its subsidiaries (together, "Indivior" or the "Company") is the leader in long-acting injectable medications for opioid use disorder (OUD). The Company's core products include SUBLOCADE (buprenorphine extended-release monthly injection) and SUBOXONE Film (buprenorphine and naloxone sublingual film), both of which are treatments for OUD.

On August 1, 2026, Indivior Pharmaceuticals, Inc., a Delaware corporation (“Indivior”) and Artemis Merger Sub Inc., a Delaware corporation and a wholly owned subsidiary of Indivior (“Merger Sub”), entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Supernus Pharmaceuticals, Inc., a Delaware corporation (prior to the Effective Time (as defined below), “Supernus”). The Merger Agreement provides that, upon the terms and subject to the conditions set forth in the Merger Agreement, the Company's Merger Sub, a wholly owned subsidiary, will merge with and into Supernus (the “Merger”), with Supernus continuing as the surviving company, and as a wholly-owned subsidiary of Indivior following the transaction. As a result of the Merger, Indivior will change its name to Supernus, Inc. (subsequent to the Effective Time, the “Combined Company”).

Subject to the terms and conditions of the Merger Agreement, at the effective time of the Merger (the “Effective Time”) and as a result of the Merger, each share of common stock of Supernus issued and outstanding immediately prior to the Effective Time will be converted into the right to receive 1.5401 shares of common stock of Indivior and cash in lieu of fractional shares. Additionally, at the Effective Time and as a result of the Merger, outstanding Supernus equity awards will be automatically converted into Indivior equity awards. RSUs and stock options will generally retain their existing vesting and other terms, while PSUs will be converted into time-based RSUs and the related performance conditions will cease to apply. The conversion of the equity awards will occur at the same exchange ratio as applies to Supernus common stock in the Merger; the exercise price of converted Supernus stock options will also be correspondingly adjusted.

In connection with a termination of the Merger Agreement in certain limited circumstances, Indivior could be required to pay a termination fee to Supernus in the amount of $174 million and Supernus could be required to pay a termination fee to Indivior of $101 million.

Upon completion of the Merger, Indivior stockholders are expected to own approximately 56.5% of the Combined Company on a fully diluted basis and Supernus stockholders will own approximately 43.5% of the Combined Company on a fully diluted basis.

Indivior declared a special cash dividend in an aggregate amount of $1,000 million, which will be payable to (i) holders of record of the issued and outstanding Indivior Common Stock as of the October 30, 2026 record date and (ii) holders of certain Indivior equity awards outstanding as of such date with respect to the Indivior Common Stock underlying such Indivior equity award, with such special dividend to be paid following the Effective Time (the "Special Dividend").

In connection with the Merger Agreement and the Special Dividend, Indivior entered into a commitment letter with Citibank, N.A. pursuant to which Citibank, N.A. has committed to provide, subject to the terms and conditions thereof, a senior secured term loan facility in an aggregate principal amount of $650 million. Proceeds from the senior secured term loan facility, together with cash on hand of the combined company, are expected to be used to fund the Special Dividend.

nominees of the board of directors of Indivior immediately prior to the Effective Time of the merger and four individuals who are nominees of the board of directors of Supernus immediately prior to the Effective Time of the Merger; (ii) Jack A. Khattar will serve as Chief Executive Officer and as a member of the Combined Company board; and (iii) Timothy C. Dec will serve as Chief Financial Officer.

The Company has concluded that Supernus Pharmaceuticals, Inc. (“Supernus”) will be the accounting acquirer in the merger under Accounting Standards Codification (“ASC”) 805, Business Combinations. Because Indivior will be the legal parent and issuer of the equity consideration while Supernus is the accounting acquirer, the transaction will be accounted for as a reverse acquisition under ASC 805-40.

On October 15, 2026, Indivior's stockholders approved the issuance of shares of common stock of Indivior (par value $0.001 per share) in connection with the proposed merger. Also on October 15, 2026, Supernus stockholders approved certain proposals related to the merger. The transaction is expected to close on or about November 2, 2026, subject to the satisfaction or waiver of other specified closing conditions.

The accompanying unaudited interim Condensed Consolidated Financial Statements and related notes should be read in conjunction with the audited Consolidated Financial Statements of Indivior Pharmaceuticals, Inc. and its subsidiaries and related notes as contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025. The unaudited interim financial statements include all adjustments (consisting only of normal recurring adjustments) and accruals necessary in the judgment of management for a fair statement of the results for the periods presented.

The accounting policies of the Company are consistent with those disclosed in "Item 1. Financial Statements - Note 2. Summary of Significant Accounting Policies" of the Company's Annual Report on Form 10-K for the year ended December 31, 2025.

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. Significant estimates are used in determining items such as accruals for returns, incentives and rebates, certain accrued expenses, acquisitions, and ongoing litigation. Actual results may differ from those estimates.

ASU 2024-04, Debt - Debt with Conversion and Other Options (Subtopic 470-20): Induced Conversions of Convertible Debt Instruments, was issued in November 2024 and clarifies the requirements for determining whether certain settlements of convertible debt instruments should be accounted for as induced conversions or debt extinguishments. ASU 2024-04 is effective for annual and interim periods beginning after December 15, 2025. The Company adopted ASU 2024-04 effective January 1, 2026 and applied the guidance on a prospective basis. The adoption of ASU 2024-04 did not have a material impact on the Company's condensed consolidated financial statements.

ASU 2025-05, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets was issued in July 2025 and allows entities to elect a practical expedient that assumes that the current conditions as of the balance sheet date do not change for the

remaining life of the asset. ASU No. 2025-05 is effective for annual and interim periods beginning after December 15, 2025. The Company adopted ASU 2025-05 effective January 1, 2026 and applied the guidance on a prospective basis. The adoption of ASU 2025‑05 did not have a material impact on the Company’s condensed consolidated financial statements.

ASU 2025‑07, Derivatives and Hedging (Topic 815) and Revenue from Contracts with Customers (Topic 606): Derivatives Scope Refinements and Scope Clarification for Share‑Based Noncash Consideration from a Customer in a Revenue Contract refines the scope of derivative accounting under Topic 815 by introducing a new scope exception for certain contracts or embedded features that are not exchange traded and have underlyings based on the operations or activities specific to one of the parties to the contract. In addition, the ASU clarifies that share‑based noncash consideration received from a customer in exchange for goods or services is initially accounted for under Topic 606, Revenue from Contracts with Customers, unless and until the entity’s right to receive or retain such consideration becomes unconditional. The Company early adopted ASU 2025‑07 effective January 1, 2026 and applied the guidance on a prospective basis. The adoption of ASU 2025‑07 did not have a material impact on the Company’s condensed consolidated financial statements.

ASU 2024-03: Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40)—Disaggregation of Income Statement Expenses (as clarified by ASU 2025-01) was issued in November 2024, requires disclosure of specified information about certain costs and expenses in the notes to the financial statements and is required to be applied by the Company for annual periods beginning after December 31, 2026 and interim periods beginning after December 15, 2027. As this accounting standard only impacts disclosures, it is not expected to have a material impact on the Company’s financial statements.

ASU No. 2025-06, Intangibles-Goodwill and Other-Internal Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software was issued in September 2025 and removes all references to software development project stages. Software capitalization will begin when management has authorized and committed to funding the software project and when it is probable that the project will be completed and the software will be used to perform the function intended. ASU 2025-06 is effective for interim and annual periods beginning after December 15, 2027. The guidance may be applied on a prospective basis, a modified transition approach or a retrospective transition approach and allows for early adoption. Adoption is not expected to have a material impact on the Company's financial statements.