ALLURION TECHNOLOGIES, INC.

Organizationand Basis of Presentation

Organization

Allurion Technologies, Inc. (“Allurion” or the “Company”) is a vertically integrated medical device company that is developing, manufacturing, and commercializing innovative weight loss experiences centered around its Allurion™ Smart Capsule. The Allurion Smart Capsule is the world’s first and only swallowable, procedureless™ intragastric balloon for weight loss that does not require surgery, endoscopy, or anesthesia for placement. Allurion sells the Allurion Smart Capsule and connected scale through distributors or directly to health care providers.

The Company also offers tiered access to artificial intelligence ("AI")-powered remote patient monitoring tools, a mobile app for patients and a clinic dashboard for providers, referred to as the Allurion Virtual Care Suite (“VCS”) and, collectively with the Allurion Smart Capsule, referred to as the “Allurion Program”. The base tier of the VCS is free of charge to those purchasing the Allurion Smart Capsule, as well as customers looking for a weight-loss management platform for patients utilizing other weight loss treatments, including anti-obesity medications and bariatric surgery. More full-scale versions of the VCS are available to health care providers on an upgrade basis. Allurion currently markets the Allurion Program in over 50 countries, and the Company operates subsidiaries in the United States, France, the United Arab Emirates, the United Kingdom, Italy, Spain, Australia and Mexico.

Business Combination Agreement

On February 9, 2023, Allurion Technologies Opco, Inc. (formerly Allurion Technologies, Inc., “Legacy Allurion”) and Allurion Technologies, Inc. (formerly Allurion Technologies Holdings, Inc.) entered into the Business Combination Agreement (as subsequently amended on May 2, 2023, the “Business Combination Agreement”) with Compute Health Acquisition Corp. (“CPUH” or "Compute Health"), Compute Health Corp. (“Merger Sub I”) and Compute Health LLC (“Merger Sub II” and, together with Merger Sub I, the “Merger Subs”). Pursuant to the Business Combination Agreement, on August 1, 2023 (the “Closing Date”), the Mergers (as defined below) were consummated in three steps: (a) Compute Health merged with and into Allurion (the “CPUH Merger”), with Allurion surviving the CPUH Merger as a publicly listed entity (the time at which the CPUH Merger became effective, the “CPUH Merger Effective Time”) and becoming the sole owner of the Merger Subs; (b) three hours following the consummation of the CPUH Merger, Merger Sub I merged with and into Legacy Allurion (the “Intermediate Merger” and the time at which the Intermediate Merger became effective, the “Intermediate Merger Effective Time”), with Legacy Allurion surviving the Intermediate Merger and becoming a direct, wholly-owned subsidiary of Allurion; and (c) thereafter, Legacy Allurion merged with and into Merger Sub II (the “Final Merger” and, collectively with the CPUH Merger and the Intermediate Merger, the “Mergers”, and together with all other transactions contemplated by the Business Combination Agreement, the “Business Combination”), with Merger Sub II surviving the Final Merger and remaining a direct, wholly-owned subsidiary of Allurion (the time at which the Final Merger became effective, the “Final Merger Effective Time”). Shares of Allurion's Common Stock (defined below) began trading on the New York Stock Exchange ("NYSE") under the ticker symbol “ALUR” on August 2, 2023. Upon completion of the Business Combination, Legacy Allurion's business operations continued as our business operations.

The Business Combination was accounted for as a reverse capitalization in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). Under this method of accounting, Compute Health was treated as the “acquired” company for financial reporting purposes and Legacy Allurion was the accounting “acquirer”. Accordingly, the Business Combination was treated as the equivalent of Legacy Allurion issuing stock for the net assets of Compute Health, accompanied by a recapitalization. As a result of the reverse recapitalization, the assets and liabilities of the Company are presented at their historical carrying values, and the assets and liabilities of Compute Health are recognized on the acquisition date and measured on the basis of the net proceeds from the capital transaction, with no goodwill or other intangible assets recorded. This determination is primarily based on the fact that, immediately following the Business Combination, Legacy Allurion stockholders had a majority of the voting power of Allurion, Legacy Allurion controlled the majority of the board seats of Allurion, and Legacy Allurion senior management comprised all of the senior management of Allurion. The equity structure has been restated in all comparative periods up to the Closing Date to reflect the number of shares of the Company's common stock, $0.0001 par value per share ("Common Stock," “Allurion Common Stock” or the “Company’s Common Stock”), issued to Legacy Allurion stockholders in connection with the Business Combination. As such, the shares and corresponding capital amounts and earnings per share related to Legacy Allurion's convertible preferred stock and Legacy Allurion common stock prior to the Business Combination have been retroactively restated as shares reflecting the exchange ratio of approximately 0.9780 (the "Exchange Ratio") established in the Business Combination. The Exchange Ratio established in the Business Combination is prior to the Reverse Stock Split (as defined below) and did not change as a result of the Reverse Stock Split. As a result of this retrospective application, certain prior period balances within the condensed consolidated financial statements have changed. Refer to Note 3, Business Combination for further discussion regarding the closing of the Business Combination with Compute Health.

Unless otherwise indicated, references in this Quarterly Report on Form 10-Q to the "Company", "our", and "Allurion" refer to the condensed consolidated operations of Allurion Technologies, Inc. and its subsidiaries after giving effect to the Business Combination. References to CPUH and Compute Health refer to Compute Health Acquisition Corp. and its subsidiaries prior to the consummation of the Business Combination and references to "Legacy Allurion" refer to Allurion Technologies, Inc. prior to the consummation of the Business Combination.

Basis of Presentation

The accompanying unaudited interim condensed consolidated financial statements have been prepared in accordance with U.S. GAAP and the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”). Any reference in these notes to the applicable accounting guidance is meant to refer to the authoritative U.S. GAAP as found in the Accounting Standards Codification ("ASC"), and Accounting Standards Update ("ASU"), of the Financial Accounting Standards Board ("FASB"). They should be read in conjunction with our audited financial statements as of and for the year ended December 31, 2024 included in the Company's Annual Report on Form 10-K, filed with the SEC on March 27, 2025, as amended by Amendment No. 1 to the Annual Report on Form 10-K filed with the SEC on August 19, 2025 (collectively, the "Annual Report on Form 10-K"). The financial statements as of September 30, 2025 and for the three and nine months ended September 30, 2025 and 2024 presented in this report are unaudited; however, in the opinion of management, such financial statements reflect all adjustments, consisting solely of normal recurring adjustments, necessary for a fair presentation of the results for the interim periods presented. The results of operations for the periods presented are not necessarily indicative of the results that might be expected for future interim periods or for the full year.

Our foreign operations are subject to exchange rate fluctuations and foreign currency transaction costs. The functional currency for all of our foreign subsidiaries is the United States dollar except Allurion Australia Pty Ltd., which uses the Australian dollar. When remeasuring from a local currency to the functional currency, assets and liabilities are remeasured into U.S. dollars at exchange rates in effect at the balance sheet dates and results of operations transacted in local currency are remeasured into U.S. dollars using average exchange rates for the period presented. Gains (losses) from remeasurement of $0.9 million and less than $0.1 million for the nine months ended September 30, 2025 and 2024, respectively, and a loss from remeasurement of ($0.1) million and a gain from remeasurement of $0.4 million for the three months ended September 30, 2025 and 2024, respectively, are recorded in the statements of operations within Other income, net. The Company translates the foreign functional currency financial statements to U.S. dollars for Allurion Australia Pty Ltd. using the exchange rates at the balance sheet date for assets and liabilities, the period average exchange rates for revenues and expenses, and the historical exchange rates for equity transactions. The effects of foreign currency translation adjustments were immaterial for the three and nine months ended September 30, 2025 and 2024.

Reverse Stock Split

On December 23, 2024, following the Annual Meeting, the Board approved a reverse stock split of the Common Stock at a ratio of 1-for-25 (the “Reverse Stock Split”). Effective as of 12:01 a.m. Eastern Time on January 3, 2025, the Company filed an amendment (the “Certificate of Amendment”) to its Amended and Restated Certificate of Incorporation, as amended and/or restated from time to time, to effectuate the Reverse Stock Split.

As a result of the Reverse Stock Split, every 25 shares of the Company’s Common Stock issued or outstanding were automatically reclassified into one validly issued, fully-paid and non-assessable new share of Common Stock, subject to the treatment of fractional shares as described below, without any action on the part of the holders. Trading of the Common Stock on the NYSE commenced on a split-adjusted basis at market open on January 3, 2025, under the existing trading symbol “ALUR.”

No fractional shares were issued in connection with the Reverse Stock Split. Stockholders who would otherwise be entitled to receive fractional shares as a result of the Reverse Stock Split were automatically entitled to receive an additional fraction of a share of Common Stock to round up to the next whole share.

Proportional adjustments were also made to the number of shares of Common Stock awarded and available for issuance under the Company’s equity incentive plans, as well as the exercise price and the number of shares issuable upon the exercise or conversion of the Company’s outstanding stock options, restricted stock units and other equity securities under the Company’s equity incentive plans. Additionally, all outstanding convertible notes were adjusted in accordance with their terms, which resulted, among other changes to the convertible note terms, in proportionate adjustments being made to the number of shares issuable upon exercise of such convertible notes and to the exercise and redemption prices of such convertible notes. All outstanding warrants were also adjusted in accordance with their terms, which will, among other changes to the warrant terms, result in proportionate adjustments being made to the number of shares issuable upon exercise of such warrants and to the exercise and redemption prices of such warrants. Specifically, following the effectiveness of the Reverse Stock Split, every twenty five (25) shares of Common Stock that may be purchased pursuant to the exercise of public warrants will represent one (1) share of Common Stock that may be purchased pursuant to such warrants. Accordingly, for the Company’s warrants trading under the symbol “ALUR WS” on the NYSE, each whole public warrant will be exercisable for 0.056818 shares of Common Stock at an exercise price of $202.50 per share of Common Stock, which is based on each public warrant being exercisable for 1.420455 shares of common stock before the Reverse Stock Split, adjusted for the 25:1 reverse stock split ratio.

Unless otherwise indicated, all authorized, issued, and outstanding shares and per share amounts contained in the accompanying condensed consolidated financial statements have been adjusted to reflect the 1-for-25 Reverse Stock Split for all periods presented. As a result, net loss per share was also retrospectively adjusted for periods ended prior to the Reverse Stock Split. Proportionate adjustmentsfor the Reverse Stock Split were also made to the exercise prices and number of shares issuable under the Company's equity incentive plans, and the number of shares underlying outstanding equity awards, as applicable.

Going Concern

The Company has evaluated whether there are certain events, considered in the aggregate, that raise substantial doubt about the Company’s ability to continue as a going concern within one year after the date that the interim condensed consolidated financial statements are issued in this Quarterly Report on Form 10-Q are issued.

The Company has incurred recurring losses since inception, anticipates net losses and negative operating cash flows for the near future, and is not in compliance with certain financial covenants required under its credit facilities. Through September 30, 2025, the Company has funded its operations primarily with proceeds from the sale of its Common Stock and convertible preferred stock, issuance of convertible notes, issuance of term loans, and funds received upon consummation of the Business Combination. The Company has incurred recurring losses and cash outflows from operating activities since its inception, including losses from operations of $23.9 million and $33.1 million and cash outflows from operating activities of $23.6 million and $29.0 million for the nine months ended September 30, 2025 and 2024, respectively. As of September 30, 2025, the Company had an accumulated deficit of $244.9 million. The Company expects to continue to generate operating losses for the foreseeable future.

Until such time as we can generate sufficient revenue to fund operations, we expect to use proceeds from the issuance of equity, debt financings, or other capital transactions to fund our operations and satisfy our liquidity requirements, but the amount and timing of such financings are uncertain. Additionally, the Company has entered into an Exchange Agreement with RTW, as disclosed in Note 19, which has led to RTW not enforcing the redemption of the credit facilities within the next 12 months despite the Company's noncompliance with certain financial covenants. Based on the Company's recurring losses from operations incurred since inception, its expectation of continuing operating losses for the foreseeable future, the need to raise additional capital to finance its future operations, and noncompliance with certain financial covenants under its credit facilities, the Company has concluded that there is substantial doubt about its ability to continue as a going concern for a period of one year from the date that these condensed consolidated financial statements are issued. The accompanying unaudited condensed consolidated financial statements have been prepared assuming that the Company will continue as a going concern, which contemplates the realization of assets and the settlement of liabilities and commitments in the normal course of business.

2. Summary of Significant Accounting Policies

There have been no significant changes, except as described below, to the significant accounting policies disclosed in Note 3 of the “Notes to Consolidated Financial Statements” to the consolidated audited financial statements as of and for the year ended December 31, 2024 included in our Annual Report on Form 10-K.

Use of Estimates

The preparation of these condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements, and the reported amounts of revenues and expenses during the reporting period. Management considers many factors in selecting appropriate financial accounting policies and controls in developing the estimates and assumptions that are used in the preparation of these condensed consolidated financial statements. Management must apply significant judgment in this process. In addition, other factors may affect estimates, including expected business and operational changes, sensitivity and volatility associated with the assumptions used in developing estimates, and whether historical trends are expected to be representative of future trends. The estimation process often may yield a range of reasonable estimates of the ultimate future outcomes, and management must select an amount that falls within that range of reasonable estimates. Actual results could differ from those estimates.

Risk of Concentration of Credit, Significant Customers and Significant Suppliers

Financial instruments that potentially expose the Company to concentrations of credit risk consist primarily of cash equivalents and accounts receivable, net. The Company maintains deposits in accredited financial institutions in excess of federally insured limits. The Company maintains its cash, cash equivalents and restricted cash with financial institutions that management believes to be of high credit quality. The Company has not experienced any losses on such accounts and does not believe it is exposed to any unusual credit risk beyond the normal credit risk associated with commercial banking relationships.

Significant customers are those which represent more than 10% of the Company’s total revenue for the three and nine months ended September 30, 2025 and 2024 or accounts receivable, net balance as of September 30, 2025 and December 31, 2024. The following table presents customers that represent 10% or more of the Company’s total revenue and accounts receivable, net:

The Company relies on third parties for the supply of parts and components for its products as well as third-party logistics providers. In instances where these parties fail to perform their obligations, the Company may be unable to find alternative suppliers of parts and components to satisfactorily deliver its products to its customers on time, if at all, which could have a material adverse effect on the Company’s operating results, financial condition and cash flows and damage its customer relationships.

Recently Adopted Accounting Pronouncements

In August 2020, the FASB issued ASU 2020-06, Debt with Conversion and Other Options and Derivatives and Hedging—Contracts in Entity’s Own Equity, which simplifies the accounting for convertible instruments. The guidance removes certain accounting models which separate the embedded conversion features from the host contract for convertible instruments. The Company adopted ASU 2020-06 effective January 1, 2024 under the modified retrospective method of transition approach. The adoption of ASU 2020-06 didnot have an impact on the Company’s condensed consolidated financial statements.

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which requires disclosure of incremental segment information on an interim and annual basis. The Company adopted ASU 2023-07 effective January 1, 2024 under the retrospective method. We have disclosed significant segment expenses, other segment items, and our measure of segment profit or loss in Note 17, Segment Information.

Recently Issued Accounting Pronouncements Not Yet Adopted

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which requires public entities, on an annual basis, to provide disclosure of specific categories in the rate reconciliation, as well as disclosure of income taxes paid disaggregated by jurisdiction. This ASU is effective for fiscal years beginning after December 15, 2024, with early adoption permitted. The adoption of this standard is not expected to have a material impact on the Company's condensed consolidated financial statements and related disclosures.

3. Business Combination

As discussed in Note 1, Organization and Basis of Presentation, on August 1, 2023 the Company consummated the Business Combination with Compute Health pursuant to the Business Combination Agreement. The Business Combination was accounted for as a reverse capitalization in accordance with U.S. GAAP. Under this method of accounting, Compute Health, which was the legal acquirer, was treated as the “acquired” company for financial reporting purposes. Accordingly, the Business Combination was treated as the equivalent of Allurion issuing stock for the net assets of Compute Health, accompanied by a recapitalization.

Upon the closing of the Business Combination, (a) holders of Legacy Allurion common stock received shares of Allurion Common Stock in an amount determined by application of the Exchange Ratio of approximately 0.9780, (the Exchange Ratio established in the Business Combination is prior to the Reverse Stock Split and did not change as a result of the Reverse Stock Split) (b) each then-outstanding share of Legacy Allurion preferred stock was converted into the right to receive shares of Allurion Common Stock equal to the number of shares of Legacy Allurion common stock that would be issued upon conversion of such outstanding share of Legacy Allurion preferred stock based on the applicable conversion ratio multiplied by the Exchange Ratio, (c) each then-outstanding and unexercised Legacy Allurion option was converted into a new Allurion option on the same terms and conditions as were applicable to such Legacy Allurion option based on the Exchange Ratio, (d) each then-outstanding Legacy Allurion warrant was converted into a new Allurion warrant based on the Exchange Ratio ("Rollover Warrant"), (e) each then-outstanding Legacy Allurion restricted stock unit was converted into a rollover restricted stock unit based on the Exchange Ratio, and (f) certain amounts of loans made by Compute Health Sponsor LLC (the "Sponsor") to CPUH, which balance was $3.7 million at the time of the Business Combination, were converted into 21,023 shares of Allurion Common Stock. For periods prior to the Business Combination, the reported share and per share amounts have been retroactively converted by applying the Exchange Ratio. The consolidated assets, liabilities, and results of operations prior to the Business Combination are those of Legacy Allurion.

Further, upon the closing of the Business Combination and after giving effect to the Reverse Stock Split, each then-outstanding share of Compute Health Class A common stock was canceled and extinguished and was converted into the right to receive 1.4204550 shares of Allurion Common Stock. Additionally, the Company assumed 13,206,922 outstanding public warrants to purchase an aggregate 750,394 shares of Allurion Common Stock at $202.50 per share.

In connection with the Business Combination, the Company incurred approximately $22.7 million of transaction costs, consisting of legal and other professional fees, of which $15.2 million was recorded to additional paid-in capital as a reduction of proceeds, $2.5 million was recorded as debt issuance costs in connection with the Fortress Term Loan (as defined below), and $5.0 million was recorded as an expense in general and administrative expenses on the condensed consolidated statement of operations and comprehensive loss. Of the $5.0 million recorded as general and administrative expenses, $3.6 million relates to a one-time insurance payment related to any potential matters that might arise from the period prior to the Business Combination, and as such is not capitalized as an asset. An additional $1.2 million relates to direct costs and fees incurred as part of the Revenue Interest Financing (as defined below) with RTW Investments, LP (together with its affiliates, "RTW").

The following table reconciles the elements of the Business Combination to the condensed consolidated statement of cash flows and the condensed consolidated statement of changes in equity:

The number of shares of Allurion Common Stock outstanding immediately following the consummation of the Business Combination and after giving effect to the Reverse Stock Split was as follows:

(1) Consists of Legacy Allurion common stock and Legacy Allurion preferred stock, plus the issuance of Common Stock in connection with the vesting of RSUs at closing, less the Gaur Trust Contributed Shares (as defined below).

(2) The CPUH Stockholders shares, PIPE shares, and CPUH Sponsor shares are presented combined within the condensed consolidated statements of stockholders deficit on the "Reverse recapitalization, net of transaction costs" line, which is less the Gaur Trust Contributed Shares.

(3) The shares issued to RTW and Fortress and the Side Letter Termination shares are presented combined within the condensed consolidated statements of stockholders deficit on the "Derecognition of liabilities associated with the Backstop Shares, Hunter shares, and additional RTW and Fortress shares and issuance of related shares" line.

PIPE Investment

In connection with the execution of the Business Combination Agreement, Allurion and Compute Health entered into subscription agreements, each dated February 9, 2023, with certain accredited investors and qualified institutional buyers (the “PIPE Investors”), pursuant to which, upon the terms and subject to the conditions set forth therein, the PIPE Investors, among other things, purchased an aggregate of 215,468 shares of Allurion Common Stock at a purchase price of $176.00 per share (other than as set forth in the Amended and Restated RTW Side Letter, as defined below), for an aggregate purchase price of $37.9 million, following the CPUH Merger Effective Time (the "PIPE Investment").

Revenue Interest Financing Agreement, Side Letter and PIPE Conversion Option

On February 9, 2023, concurrently with the execution of the Business Combination Agreement, the Company entered into the Revenue Interest Financing Agreement (as amended, the "Revenue Interest Financing Agreement") with certain entities that engaged

RTWInvestments, LP (together with its affiliates, "RTW") as investment manager (such financing, the "Revenue Interest Financing"). Pursuant to the Revenue Interest Financing Agreement, at the closing of the Business Combination, RTW paid Allurion an aggregate of $40.0 million (the “Investment Amount”). In exchange for the Investment Amount, Allurion will remit revenue interest payments on all current and future products, digital solutions and services developed, imported, manufactured, marketed, offered for sale, promoted, sold, tested or otherwise distributed by Allurion and its subsidiaries at a rate up to 6.0% of annual net sales prior to December 31, 2026. On or after January 1, 2027, the Company will remit revenue interest payments at a rate up to 10.0% of annual net sales, and it will continue to make revenue interest payments to RTW until December 31, 2030. The Revenue Interest Financing Agreement was amended pursuant to the RIFA Amendment (as defined below) on April 14, 2024. The RIFA Amendment, among other things, increased the rate of revenue interest payments to be paid to RTW on all current and future products, digital solutions and services developed, imported, manufactured, marketed, offered for sale, promoted, sold, tested or otherwise distributed by Allurion and its subsidiaries. Refer to Note 9, Revenue Interest Financing, Side Letter, and PIPE Conversion Option below for further discussion on the Revenue Interest Financing.

Additionally, in connection with the Company entering into the Revenue Interest Financing Agreement, the Company, Compute Health, Legacy Allurion, Merger Sub II and RTW entered into a side letter (the "RTW Side Letter") on February 9, 2023 under which RTW may elect to convert up to $7.5 million of its initial PIPE Investment into an additional revenue interest financing by forfeiting a number of shares of Allurion Common Stock acquired by its PIPE Investment. Refer to Note 9, Revenue Interest Financing, Side Letter, and PIPE Conversion Option below for further discussion on the Revenue Interest Financing.

On May 2, 2023, the parties amended and restated the RTW Side Letter (as amended, the "Amended and Restated RTW Side Letter"), in connection with the Backstop Agreement (defined below), pursuant to which, among other things, Allurion issued 10,000 shares of Allurion Common Stock to RTW immediately prior to the Intermediate Merger Effective Time.

On October 22, 2024, funds affiliated with RTW provided notice to the Company of their election under the Amended and Restated RTW Side Letter, to surrender 30,000 shares of Common Stock of the Company representing $7.5 million in consideration for the New RIFA (as defined below). Refer to Note 19, Subsequent Events, below for further discussion on the RTW conversion.

Fortress Credit Agreement

In connection with the closing of the Business Combination, the Company entered into a term loan facility (the “Fortress Term Loan”) pursuant to a Credit Agreement and Guaranty, dated as of August 1, 2023 (the “Fortress Credit Agreement”), with Fortress Credit Corp. (“Fortress”), as administrative agent for the lenders party thereto from time to time. Under the terms of the Fortress Term Loan, we borrowed $60.0 million, which was used to repay the outstanding principal, accrued and unpaid interest, and other obligations with respect to the 2021 Term Loan (as defined below). Additionally, per the terms of the Fortress Term Loan and Backstop Agreement (as defined below), Allurion issued an aggregate of 38,000 shares of Allurion Common Stock to an affiliate of Fortress pursuant to a subscription agreement between Allurion and such affiliate. Refer to Note 8, Debtfor further discussion on the Fortress Term Loan.

Backstop Agreement

On May 2, 2023, CFIP2 ALLE LLC, an affiliate of Fortress Credit Corp., and RTW (collectively, the “Backstop Purchasers”), Legacy Allurion, Allurion and Hunter Ventures Limited (“HVL”) entered into the backstop agreement (the “Backstop Agreement”). Pursuant to the Backstop Agreement, immediately prior to the Intermediate Merger Closing, (a) each Backstop Purchaser purchased $2 million of the aggregate principal amount outstanding of HVL's Legacy Allurion convertible note issued in February 2023, (b) Allurion canceled the existing HVL Legacy Allurion Convertible Note and issued a new Allurion Convertible Note to HVL for the remaining balance together with all unpaid interest accrued since the date of issuance thereof, (c) Allurion issued new Allurion Convertible Notes to each Backstop Purchaser with an issuance date of August 1, 2023 and an original principal amount of $2 million each and (d) Allurion issued 28,000 shares of Allurion Common Stock to each Backstop Purchaser. Refer to Note 8, Debt for further discussion around the Backstop Agreement.

HVL Termination Agreement

On May 2, 2023, HVL and Legacy Allurion entered into a letter agreement (the “HVL Termination Agreement”), terminating the side letter agreement entered into between Legacy Allurion and HVL in connection with the issuance of HVL’s Legacy Allurion convertible note on February 15, 2023. Pursuant to the HVL Termination Agreement, among other things, at the closing of the Business Combination, upon the terms and subject to the conditions set forth therein, Allurion issued to HVL 15,508 shares of Allurion Common Stock. Refer to Note 8, Debt for further discussion regarding the HVL Termination Agreement.

Gaur Contribution Agreement

On May 2, 2023, Shantanu K. Gaur and Neha Gaur, trustees of The Shantanu K. Gaur Revocable Trust of 2021 (the “Gaur Trust”) and Allurion entered into a contribution agreement (the “Gaur Contribution Agreement”), pursuant to which, among other things, upon the terms and subject to the conditions set forth therein, the Gaur Trust contributed to Allurion, as a contribution of capital,3,170 sharesof Allurion Common Stock (the “Gaur Trust Contributed Shares”). The Gaur Trust’s contribution of the Gaur

Trust Contributed Shares was effective immediately following the consummation of the Business Combination and the issuance of shares of Allurion Common Stock to the Gaur Trust pursuant to the terms of the Business Combination Agreement.

RSU Forfeiture Agreement

On May 2, 2023, Krishna Gupta, a member of the Company's Board of Directors (the “Board” or “Board of Directors”), entered into a letter agreement with Legacy Allurion (the “RSU Forfeiture Agreement”), pursuant to which, among other things, upon the terms and subject to the conditions set forth therein, Mr. Gupta agreed to forfeit 3,170 restricted stock units of Allurion (the “Forfeited RSUs”). The Forfeited RSUs were terminated and cancelled without consideration therefor immediately following the closing of the Business Combination Agreement.

Sponsor Contribution Agreement

On May 2, 2023, the Sponsor and Compute Health entered into a letter agreement (the "Sponsor Contribution Agreement") pursuant to which, among other things, upon the terms and subject to the conditions set forth therein, the Sponsor agreed to contribute to Compute Health, as a contribution of capital,161,379 shares of Compute Health Class A Common Stock (“Sponsor Contributed Shares”) prior to giving effect to the Reverse Stock Split. The Sponsor’s contribution of the Sponsor Contributed Shares was made immediately following the CPUH Recapitalization (defined below) and immediately prior to the CPUH Merger Effective Time.

Sponsor Support Agreement

On February 9, 2023, Allurion entered into a support agreement (the "Sponsor Support Agreement"), pursuant to which immediately prior to the CPUH Merger Effective time, (a) the Sponsor recapitalized each of the Sponsor’s 21,442,500 shares of Compute Health Class B Common Stock, and all 12,833,333 of the Sponsor’s warrants to purchase shares of Class A Common Stock, into 2,088,327 shares of Compute Health Class A Common Stock and (b) the additional Class B Holders set forth on Schedule I of the Sponsor Support Agreement recapitalized his or her 30,000 shares of Compute Health Class B Common Stock into 21,120 shares of Compute Health Class A Common Stock (the "CPUH Recapitalization"). Subsequently, at the CPUH Merger Effective Time, each such share of Compute Health Class A Common Stock was converted into shares of Allurion Common Stock at an exchange ratio of 1.420455, prior to giving effect to the Reverse Stock Split.

Conversion of Convertible Notes

In connection with the closing of the Business Combination, outstanding Legacy Allurion Convertible Notes with an aggregate principal amount together with accrued but unpaid interest of approximately $21.8 million were converted into 132,049 shares of Allurion Common Stock with a corresponding recognition of additional paid-in capital ("APIC") of $25.6 million provided for under the terms of such Legacy Allurion Convertible Notes, and are no longer outstanding. Refer to Note 8, Debt for further information on the Company's convertible notes.

Public Warrants and Warrant Amendment

In connection with the closing of the Business Combination, the Company assumed 13,206,922 outstanding public warrants (the "Public Warrants") to purchase an aggregate 750,394 shares of Allurion Common Stock at $202.50 per share following the Warrant Amendment (defined below). The total value of the liability associated with the Public Warrants was $13.8 million measured at fair value based on the public warrant quoted price. The Company concluded the warrants met the definition of a liability based on the settlement provision that allows the warrant holders to net-share settle their warrants in the event of a failed registration statement within 60 days of the Business Combination or any time a registration is not effective. As such, they have been classified as a liability on the balance sheet. See Note 12, Redeemable Convertible Preferred Stock and Stockholders Deficit and Note 10, Fair Value Measurements for further information on the Public Warrants and Warrant Amendment.

Earn-Out Liabilities

In connection with the closing of the Business Combination, Legacy Allurion equity holders are entitled to receive additional shares of Allurion Common Stock if the share price achieves certain targets (the "Earn-Out Shares"). The Company accounts for the potential issuance of the Earn-Out Shares as a contingent consideration arrangement, which was initially valued and recorded at $53.0 million. See Note 10, Fair Value Measurements for further information on the earn-out liabilities.

4. Revenue

Revenue by geographic region is based on the country in which our customer is located and is summarized by geographic area as follows (in thousands):

For the three months ended September 30, 2025, $0.5 million of revenue was generated infive countries included within All Other Countries in the table above, representing approximately 20% of Total Revenues, with each country responsible for approximately 3% to 6% of the total. Remaining revenue was generated by sales in 21 other countries included within All Other Countries. For the three months ended September 30, 2024, $1.6 million of revenue was generated infive countries included within All Other Countries, representing approximately 30% of Total Revenues, with each country responsible for approximately 4% to 8% of the total. Remaining revenue was generated by sales in 35 other countries included within All Other Countries.

For the nine months ended September 30, 2025, $3.5 million of revenue was generated infive countries included within All Other Countries in the table above, representing approximately 30% of Total Revenues, with each country responsible for approximately 4% to 9% of the total. Remaining revenue was generated by sales in 40 other countries included within All Other Countries. For the nine months ended September 30, 2024, $8.0 million of revenue was generated infive countries included within All Other Countries, representing approximately 30% of Total Revenues, with each country responsible for approximately 4% to 9% of the total. Remaining revenue was generated by sales in 51 other countries included within All Other Countries. No revenue was generated in the United States from the sale of the Allurion Smart Capsule for the three and nine months ended September 30, 2025.

5. Inventory

Inventory consists of the following (in thousands):

Inventory is stated net of $1.5 million and $1.6 million for the provision for excess and obsolete inventory as of September 30, 2025 and December 31, 2024, respectively.

6. Property and Equipment, net

Property and equipment consist of the following (in thousands):

Depreciation expense was $0.3 million and $0.2 million for the three months ended September 30, 2025 and 2024, respectively, and $0.8 million for each of the nine months ended September 30, 2025 and 2024, respectively, recorded as follows (in thousands):

7. Accrued Expenses and Other Current Liabilities

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

In November 2024, the Company's management approved and initiated plans to reduce its cost structure. The restructuring plan initiated in November 2024 was substantially completed during the first half of 2025, with remaining payments to be made in accordance with local regulations through April 2026. Substantially all of the charges represent the severance cost of terminated employees, and are included in cost of revenue and operating expenses in the statement of operations. The following table rolls forward the activity in the restructuring accrual for the November 2024 action through September 30, 2025.

In August 2025, the Company's management approved and initiated plans to reduce its cost structure. The restructuring plan initiated in August 2025 was substantially completed during the third quarter of 2025, with remaining payments to be made in accordance with local regulations through September 2026. Substantially all of the charges represent the severance cost of terminated employees, and are included in cost of revenue and operating expenses in the statement of operations. The following table rolls forward the activity in the restructuring accrual for the August 2025 action through September 30, 2025.

8. Debt

The components of the Company’s third-party debt consist of the following (in thousands):

Fortress Term Loan

On August 1, 2023, the Company entered into the Fortress Term Loan pursuant to the Fortress Credit Agreement with Fortress that provided gross proceeds of $60 million. The Fortress Term Loan had a maturity date of June 30, 2027 and accrued interest per annum at a rate of 6.44% plus the greater of (i) the Wall Street Journal Prime Rate and (ii)3.0%, which interest was payable in arrears on a monthly basis. The Fortress Term Loan provided for an exit payment equal to 3.0% of the Fortress Term Loan (the "Exit Fee") due upon prepayment or the maturity date of the Fortress Term Loan, in addition to any early prepayment fee. The Exit Fee is treated as additional interest expense and is accreted over the life of the loan using the effective interest method. Proceeds of the Fortress Term Loan were used, in part, to repay all amounts outstanding under the 2021 Term Loan. In connection with the issuance of the Fortress Term Loan, the Company paid issuance costs of $2.5 million, which were recorded as a debt discount and will be amortized over the remaining life of the loan.

On December 29, 2023, the Company entered into an amendment to the Fortress Credit Agreement (the "Fortress Amendment"). The Fortress Amendment waived the December 31, 2023 minimum revenue covenant under the Fortress Credit Agreement and modified the minimum liquidity covenant by increasing the minimum liquidity amount from $12.5 million to $33.5 million until March 31, 2024, $23.5 million from April 1, 2024 to June 30, 2024, $16.9 million from July 1, 2024 to September 30, 2024 and $12.5 million on October 1, 2024 and thereafter. The Fortress Amendment also provided that at any time after March 31, 2024, each lender had the right to convert a portion of the outstanding principal amount, not to exceed the lender's proportionate share of a maximum of $20.0 millionin aggregate outstanding principal amount, into shares of Allurion Common Stock at a conversion price based on the 30-day volume weighted average price ("VWAP") of Allurion Common Stock on the NYSE ending on the trading day immediately preceding the date of exercise of the lender's conversion right. As part of the Fortress Amendment, the Company prepaid$20.0 million of the principal outstanding under the Fortress Credit Agreement. Additionally, $3.1 million of fees were incurred and considered paid-in-kind and capitalized as an additional debt discount and added to the outstanding principal amount of the loans under the Fortress Amendment. The fees were amortized through interest expense over the remaining life of the loan. The Fortress Amendment was accounted for as a modification under ASC 470, Debt. In connection with the modification and related prepayment, the Company wrote off $0.8 million of the unamortized debt issuance costs, which was recorded within interest expense on the condensed consolidated statement of operations for the year ended December 31, 2023.

The Company assessed the terms and features of the Fortress Credit Agreement in order to identify any potential embedded features that would require bifurcation or any beneficial conversion features. The terms and features assessed included, under certain circumstances, a default interest rate of 3% that will apply to all outstanding obligations during the occurrence and continuance of an event of default. In accordance with ASC 815, Derivatives and Hedging ("ASC 815"), the Company concluded that this feature is not clearly and closely related to the host instrument and represents an embedded derivative (the "Term Loan Derivative Liability") that is required to be re-measured at fair value on a quarterly basis. At the inception of the Fortress Term Loan, the fair value of the embedded derivative was determined to be immaterial. The Term Loan Derivative Liability was fair valued tozero in connection with the repayment of the Fortress Term Loan, with a corresponding $2.0 million gain recorded inother income, net in the condensed consolidated statement of operations for the three and nine months ended September 30, 2024.

On April 16, 2024, the Company repaid all outstanding obligations under the Fortress Term Loan with proceeds from the Amended Note Purchase Agreement (as defined below) with RTW. The total payoff amount was $48.0 million, consisting of $43.1 million repayment of principal, a $2.7 million prepayment fee, a $1.3 million exit fee, $0.6 million of other fees paid directly to Fortress, and $0.3 million of accrued interest. The Company recorded an $8.7 million loss on extinguishment of debt in connection with the Fortress Term Loan repayment in the condensed consolidated statement of operations for nine months ended September 30, 2024.

Interest expense for the nine months ended September 30, 2024 related to the Fortress Term Loan was $2.3 million, consisting of $1.9 million of contractual interest, $0.3 million amortization of the debt discount, and term loan accretion of $0.1 million. There wasno interest expense for the three months ended September 30, 2024 due to the extinguishment of the Fortress Term Loan on April 16, 2024. The average interest rate through April 16, 2024 was 14.94%.

Convertible Notes

2023 Convertible Notes

Between February and August 2023, the Company entered into a convertible note purchase agreement, and related side letters, for the sale of convertible notes (the "2023 Convertible Notes") to certain investors for gross proceeds of $28.7 million, with a stated interest rate of 7.0% per annum. The 2023 Convertible Notes provided that they would mature on December 31, 2026 unless previously converted pursuant to the terms of the note purchase agreement. The 2023 Convertible Notes also provided that, effective upon a deSPAC transaction, all of the outstanding principal and interest would automatically convert into a number of shares of Legacy Allurion common stock equal to the balance of the 2023 Convertible Notes on the date of conversion divided by the discounted capped conversion price, which is calculated by dividing $217.3 million by the fully diluted capitalization of the Company immediately prior to the conversion of the 2023 Convertible Notes.

Additionally, the 2023 Convertible Notes provided that, effective upon the closing of a qualified financing, holders of the 2023 Convertible Notes could optionally accelerate repayment of the principal and interest of the 2023 Convertible Notes or convert all of the outstanding principal and interest into shares of Legacy Allurion common stock or shares of the same class or series of capital stock issued in the qualified financing equal to the balance of the 2023 Convertible Notes on the date of conversion divided by the greater of the capped price or the discounted price. The capped price is calculated by dividing $260.0 million by the fully diluted capitalization of the Company immediately prior to the conversion of the 2023 Convertible Notes, and the discounted price is calculated as 85% of the cash price of the same class or series of capital stock issued in the qualified financing. The 2023 Convertible Notes were accounted for under the fair value option ("FVO") election of ASC 825 as the notes contain embedded derivatives, including the automatic conversion upon a deSPAC transaction prior to the deSPAC deadline, voluntary conversion upon a qualified financing, automatic repayment upon a sale event, and conversion rate adjustment, which would require bifurcation and separate accounting. These convertible notes are initially measured at their issue-date estimated fair value and subsequently remeasured at estimated fair value on a recurring basis at each reporting period date.

On May 2, 2023 the Company entered into termination agreements (the “Termination Agreements”) with respect to side letters entered into with certain holders of the 2023 Convertible Notes. With respect to the Termination Agreement with HVL, the Company had the right to prepay, in one or more transactions, all or a portion of the outstanding principal amount, plus accrued interest, under such holder's 2023 Convertible Note (the “HVL Bridge Note”), including by way of (a) a $2 million payment in cash by the Company to HVL on May 2, 2023, $1.5 million of which was deemed a prepayment penalty and recorded as other expense on the income statement, with the remaining $0.5 million recorded as a reduction of the principal amount, (b) immediately prior to the consummation of the transactions contemplated by the Business Combination Agreement, an additional payment of at least $6 million, up to the then-outstanding principal amount, plus accrued interest, under the HVL Bridge Note by way of (i) payment in cash by the Company and/or(ii) the sale and transfer of all or any portion of the HVL Bridge Note, equivalent in value to the portion of the additional payment to be repaid pursuant to this clause (b)(ii), to any person or persons designated in writing by the Company. The Termination Agreements were accounted for as a modification of debt and the modified convertible notes continued to be accounted for under the FVO with any change in fair value recognized in other expense on the income statement.

In addition, under the Termination Agreement executed with HVL, the Company agreed to issue to HVL a number of shares of Allurion Common Stock (“PubCo Additional Shares”) equal to (a) the outstanding principal and accrued interest under the HVL Bridge Note immediately prior to the consummation of the transactions contemplated by the Business Combination Agreement (after giving effect to the payment of the repayments) divided by $125.00, plus (b)12,000 shares of Allurion Common Stock. The PubCo Additional Shares were accounted for as a freestanding financing liability. The liability for the PubCo Additional Shares was initially measured at its issue-date estimated fair value and subsequently remeasured at fair value at each reporting period, with changes in fair value reflected in earnings until the PubCo Additional Shares were issued. A $3.4 million liability was recorded at issuance for the PubCo Additional Shares as Other liabilities on the balance sheet. On August 1, 2023, upon closing of the Business Combination and after giving effect to the Reverse Stock Split, HVL was issued 15,508 PubCo Additional Shares with a corresponding recognition of APIC of $2.7 million, and the liability is no longer outstanding.

Further on May 2, 2023, RTW and Fortress as the Backstop Purchasers entered into the Backstop Agreement with the Company, Legacy Allurion and HVL. Pursuant to the Backstop Agreement, each Backstop Purchaser agreed that to the extent any HVL Bridge Notes remained outstanding prior to the consummation of the Business Combination, such Backstop Purchaser would, at the closing of the Business Combination, purchase up to $2.0 million of the HVL Bridge Notes from HVL in exchange for shares of Allurion Common Stock (the “Base PubCo Shares”and, “Backstop Shares”). The Base PubCo Shares and Backstop Shares were accounted for as a freestanding financing liability. The Base PubCo Shares and Backstop Shares liability was initially measured at its issue-date estimated fair value and subsequently remeasured at fair value at each reporting period with changes in fair value reflected in earnings until the Base PubCo Shares and Backstop Shares were issued. A $3.3 million liability was recorded at issuance for the Base PubCo Shares and Backstop Shares liability as Other liabilities on the balance sheet. On August 1, 2023, upon closing of the Business Combination and after giving effect to the Reverse Stock Split, per the terms of the Fortress Term Loan, the Amended and Restated RTW Side Letter and Backstop Agreement, the Backstop Purchasers were each issued 38,000 shares of Allurion Common Stock with a corresponding recognition of APIC of $13.4 million, and the liability is no longer outstanding.

On August 1, 2023, immediately prior to the closing of the Business Combination and after giving effect to the Reverse Stock Split, the Company repaid $6.3 million of the HVL Bridge Note, leaving a principal balance of $6.3 million. Each Backstop Purchaser then purchased $2.0 million principal amount of the outstanding portion of the HVL Bridge Note, Allurion canceled the existing HVL Bridge Note and issued a new convertible note to HVL for the remaining balance together with all unpaid interest accrued since the date of issuance of $2.7 million, Allurion issued convertible notes to each Backstop Purchaser with an issuance date of the Closing Date (August 1, 2023) and an original principal amount of $2.0 million each, and Allurion issued 28,000 shares of Allurion Common Stock to each Backstop Purchaser. Additionally, the outstanding 2023 Convertible Notes were converted into an aggregate 123,376 shares of Allurion Common Stock with a corresponding recognition of APIC of $22.2 million, and are no longer outstanding.

On April 14, 2024, the Company entered into a note purchase agreement (the "Original Note Purchase Agreement") with RTW as agent for the purchasers (the "Purchasers") party thereto from time to time (RTW in such capacity, the "Principal Purchaser"), and Acquiom Agency Services LLC ("Acquiom") as collateral agent for the Purchasers. Subsequently, on April 16, 2024, the Company, the Principal Purchaser, the Purchasers, and Acquiom entered into the First Amendment to the Original Note Purchase Agreement (the Original Note Purchase Agreement as amended, the "Amended Note Purchase Agreement").

Pursuant to the Amended Note Purchase Agreement, the Company issued and sold $48.0 million of convertible senior secured notes (the "RTW Convertible Notes"). The RTW Convertible Notes bear interest at an annual rate of 6%, which interest is paid quarterly in cash or, at the Company's option, in kind for the first three years. The RTW Convertible Notes will mature on April 16, 2031 unless previously converted pursuant to the terms of the Amended Note Purchase Agreement. The RTW Convertible Notes are convertible into shares of Allurion Common Stock, at a Purchaser’s election at any time after the earliest of (i) the date on which Stockholder Approval (as defined below) is obtained, (ii) December 31, 2025, (iii) the date of a Fundamental Change Company Notice (as defined in the Amended Note Purchase Agreement), and (iv) the Make-Whole Fundamental Change Effective Date (as defined in the Amended Note Purchase Agreement), subject to certain terms and limitations in the Amended Note Purchase Agreement, based on a conversion rate of 24.6920 shares of Common Stock per $1,000 principal amount of Notes (equivalent to a conversion price of approximately $40.50 per share, which represents a 35% premium to the lowest price per share in an equity financing for capital raising purposes ending on the date on which the Company has raised aggregate gross offering proceeds of at least $15,000,000 (the “Next Equity Financing”). On July 1, 2024, we consummated the Public Offering, as described elsewhere in this Quarterly Report on Form 10-Q, which constituted a Next Equity Financing. The Amended Note Purchase Agreement provides that unless and until requisite approval of the Company’s stockholders is obtained (“Stockholder Approval”), the Company will not deliver Allurion Common Stock upon conversion of the RTW Convertible Notes in excess of 1%of the number of shares of Allurion Common Stock outstandingas of April 14, 2024. Stockholder Approval was obtained at the Company's annual meeting of stockholders held on December 16, 2024.

On January 7, 2025, the Company and Allurion Technologies, LLC ("Allurion OpCo") entered into an Omnibus Amendment (the "Omnibus Amendment") with Allurion Australia Pty Ltd, Allurion France, and RTW to amend the Amended Note Purchase Agreement, the Revenue Interest Financing Agreement, and the New RIFA (collectively, the "Existing Documents").

The Omnibus Amendment requires, among other things, (i) the Company and Allurion OpCo to maintain certain minimum balances of unrestricted cash in controlled accounts in the U.S. in the amounts corresponding to the calculations set forth therein, and (ii) the Company to receive minimum trailing 12-month consolidated Revenue (as defined in the Amended Note Purchase Agreement) in amounts set forth therein, tested quarterly beginning with the 12-month period ending September 30, 2025. The Omnibus Amendment also requires that (i) Allurion France shall have successfully regained marketing authorization from the Agence Nationale de Sécurité du Médicament (“ANSM”) in France on or prior to December 31, 2025 and (ii) Allurion OpCo shall have received Marketing Authorization from the U.S. Food & Drug Administration for the Commercialization of the Product in the United States no later than June 30, 2026.

Pursuant to the Omnibus Amendment, the investors and the purchasers party thereto will receive a number of shares of the Company’s Common Stock, representing in the aggregate five percent of the fully-diluted shares outstanding immediately after the closing of the offering and sale of Additional Shares (as defined in the Existing Documents) to be consummated no later than February 15, 2025, in connection with which the Company shall have raised at least $12.0 million aggregate net proceeds (the “Share Obligation”); provided that, in the event the Company cannot issue shares of Common Stock to the Investors and the Purchasers due to applicable law or NYSE listing rules, the Company will instead issue an equivalent (as-converted) number of shares of a newly created series of Series A-1 non-voting preferred stock (the “Series A-1 Preferred Stock”) and the Company shall include a proposal in a definitive proxy statement on Schedule 14A seeking stockholder approval no later than December 31, 2025 to allow the conversion of Series A-1 Preferred Stock into Common Stock; provided further that, each share of Series A-1 Preferred Stock outstanding on December 31, 2026 will, except to the extent prohibited by Delaware law governing distributions to stockholders (including the Delaware General Corporation Law), be redeemed by the Company for cash in an amount equal to the as-converted value of the underlying Common Stock.

On April 15, 2025, the Company, the Principal Purchaser, and the Purchasers entered into a Second Amendment to the Note Purchase Agreement (the "Second Amendment to Note Purchase Agreement"), which amended the Existing Note Purchase Agreement to reflect additional conversions and other provisions. The Second Amendment to Note Purchase Agreement provides for the mandatory conversion of $5.0 million of principal amount of the RTW Convertible Notes in the event the Company’s market capitalization, as determined in accordance with the rules of the NYSE, is reasonably expected to fall below $15.0 million (the “Market Capitalization Condition”). In the event such Market Capitalization Condition is triggered, the Purchasers shall provide notice to the Company, and the Company shall accept such notice, to convert $5.0 million aggregate principal amount of the RTW Convertible Notes at the Floor Conversion Rate (defined below), and such amount shall be converted into 1,492,539 shares of common stock. The Purchasers also have the right to provide notice to the Company to convert up to an additional $5.0 million of aggregate principal amount of the RTW Convertible Notes into shares of common stock at an agreed conversion rate. The Company has the right to accept or reject such conversion in its sole discretion. The Company and the Purchasers will mutually agree on the agreed conversion rate, provided that it is not more than 298.5075 shares of common stock per $1,000 principal amount of the RTW Convertible Notes, reflecting a floor conversion price of $3.35 per share of common stock (the “Floor Conversion Rate”).

In addition, without regard to the Market Capitalization Condition, the Purchasers may provide the Company notice to convert up to an additional $5.0 million aggregate principal amount of the RTW Convertible Notes into shares of common stock at the 5-Day VWAP Conversion Rate, which the Company may accept or reject in its sole discretion. The "5 Day VWAP Conversion Rate” is the lesser of (i) the quotient of $1,000 divided by the daily volume weighted average price of the common stock for the five consecutive trading day period ending on the trading day immediately preceding the date of the delivery of the Purchaser’s notice discounted by five percent and (ii) the Floor Conversion Rate. Finally, during the one year period ending on April 15, 2026, the Purchasers in their sole discretion may provide the Company notice to convert up to an additional $1.0 million aggregate principal amount of the RTW Convertible Notes in any 30-day period into shares of common stock at the 5-Day VWAP Conversion Rate. If the Purchasers do not exercise their right to provide a notice to convert all or a portion of $1.0 million aggregate principal amount of the RTW Convertible Notes per month, any shortfall may be included in the amount to be converted in a subsequent 30-day period. The maximum principal amount of the RTW Convertible Notes that may be converted under such monthly conversion provision is $12.0 million.

The Second Amendment to Note Purchase Agreement is accounted for as an extinguishment of debt under ASC 470, due to the substantive conversion features included in the Second Amendment to Note Purchase Agreement. The fair value of the RTW Convertible Notes were remeasured immediately before and after the Amendment was signed on April 15, 2025 as $31.6 million and $32.2 million, respectively. As a result the Company recorded a loss from the extinguishment of debt of $0.7 million. On April 16, 2025, the Purchasers provided notice of conversion of $5.0 million of principal amount of the RTW Convertible Notes based on the triggering of the Market Capitalization Condition. The corresponding equity issued consists of a reduction of the liability of $3.2 million and increase to APIC of $3.2 million.

The RTW Convertible Notes were accounted for under the FVO election of ASC 825 at inception in April 2024 as the notes contain embedded derivatives, including the conversion upon Stockholder Approval, the conversion upon a Fundamental Change Company Notice (as defined in the RTW Convertible Notes), the conversion upon a Make-Whole Fundamental Change (as defined in the RTW Convertible Notes), redemption upon the event of default, and redemption upon a Fundamental Change (as defined in the RTW Convertible Notes), which would require bifurcation and separate accounting. The RTW Convertible Notes will continue to be accounted for under the FVO election following the extinguishment of debt in connection with the Second Amendment to Note Purchase Agreement. Prior to the Amendment, the RTW Convertible Notes were initially measured at their issue-date estimated fair value and subsequently remeasured at estimated fair value on a recurring basis at each reporting period date. The fair value of the RTW Convertible Notes at issuance in April 2024 was $49.1 million, with a corresponding $1.1 million loss recognized in Other income (expense), net in the condensed consolidated statement of operations. In connection with the April 2024 issuance of the RTW Convertible Notes and RIFA Amendment (as defined below), the Company incurred $1.4 million in issuance costs, which were directly expensed through general and administrative expense due to the FVO election of the RTW Convertible Notes and Revenue Interest Financing.

The Share Obligation is accounted for as a liability under ASC 480, Distinguishing Liabilities from Equity ("ASC 480"). As the Share Obligation was initiated in exchange for amendments of the Amended Note Purchase Agreement, the Revenue Interest Financing Agreement, and the New RIFA, all of which are accounted for under the FVO election, the liability was recorded at its initial fair value of $1.3 million, with an offset to Other income (expense). The liability will be remeasured at estimated fair value on a recurring basis at each reporting period date until it is settled. The Omnibus Amendment results in a modification of the Amended Note Purchase Agreement, the Revenue Interest Financing Agreement, and the New RIFA.

For the three months ended September 30, 2025, the Company recorded a $1.3 million loss and $2.2 million loss on the RTW Convertible Notes through the condensed consolidated statements of operations and other comprehensive income (loss), respectively. For the nine months ended September 30, 2025, the Company recorded a $2.5 million loss and $3.4 million gain on the RTW Convertible Notes through the condensed consolidated statements of operations and other comprehensive income (loss), respectively. For the three and nine months ended September 30, 2025, the Company recorded a $0.1 million gain and $0.5 million gain on the Share Obligation, respectively.

The Company elected paid in kind interest for the three and nine months ended September 30, 2025 related to the RTW Convertible Notes.

9. Revenue Interest Financing, Side Letter, and PIPE Conversion Option

On February 9, 2023, Legacy Allurion entered into the Revenue Interest Financing Agreement. Pursuant to the Revenue Interest Financing, at the closing of the Business Combination, RTW paid Allurion an aggregate of $40.0 million Investment Amount. In exchange for the Investment Amount, Allurion will remit revenue interest payments on all current and future products, digital solutions and services developed, imported, manufactured, marketed, offered for sale, promoted, sold, tested or otherwise distributed by Allurion and its subsidiaries at a rate up to 6.0% of annual net sales prior to December 31, 2026. On or after January 1, 2027, the Company will remit revenue interest payments at a rate up to 10.0% of annual net sales, and it will continue to make revenue interest payments to RTW until December 31, 2030. Such payments were subsequently modified pursuant to the RIFA Amendment, discussed below.

If RTW has not received aggregate revenue interest payments equal to at least 100% of the Investment Amount by December 31, 2027, the Company must make a cash payment in an amount sufficient to catch RTW up to 100% of the Investment Amount. If RTW has not received revenue interest payments equal to at least 240% of the Investment Amount by December 31, 2030, the Company must make a cash payment in an amount sufficient to catch RTW up to 240% of the Investment Amount. In any event, RTW shall not receive aggregated revenue interest payments in excess of 260% of the Investment Amount. In addition, prior to December 31, 2025, the Company may prepay a pre-specified payment amount (the "Prepayment Amount") and terminate the Revenue Interest Financing Agreement. The Prepayment Amount shall be an amount equal to 165% of the Investment Amount less the sum of all revenue interest payments made to RTW prior to such date of prepayment.

The Revenue Interest Financing is accounted for under the FVO election of ASC 825 as the Revenue Interest Financing contains embedded derivatives, including the requirements to settle the Revenue Interest Financing prior to maturity upon the occurrence of certain contingent events and our ability to prepay the Revenue Interest Financing, which would require bifurcation and separate accounting. The Revenue Interest Financing was initially measured at its issue-date estimated fair value and subsequently remeasured at estimated fair value on a recurring basis at each reporting period date. Changes in fair value are recorded as a component of Other income (expense) in the condensed consolidated statements of operations. A portion of the estimated change in fair value must be reported in other comprehensive loss to the extent that it is attributable to instrument-specific credit risk. In connection with the issuance of the Investment Amount, we paid $1.2 million in issuance costs in August 2023, which were directly expensed through general and administrative expense due to the FVO election. As of September 30, 2025, the Company has made $6.2 millionin royalty payments to RTW. Refer to Note 10, Fair Value Measurements, for additional information regarding the changes in fair value of the Revenue Interest Financing.

Concurrently, and in connection with the Amended Note Purchase Agreement, the Revenue Interest Financing Agreement was amended pursuant to the Omnibus Amendment (the "RIFA Amendment") by and among the Company, Allurion Opco, Allurion Australia Pty Ltd, a proprietary limited company organized under the laws of Australia and a wholly-owned subsidiary of the Company, the Original RIFA Investors (as defined therein) and RTW, on April 14, 2024. The RIFA Amendment, among other things, increased the rate of revenue interest payments to be paid to RTW on all current and future products, digital solutions and services developed, imported, manufactured, marketed, offered for sale, promoted, sold, tested or otherwise distributed by Allurion and its subsidiaries for net sales less than or equal to $100 million prior to December 31, 2026 from 6% to 12% and increased the rate on net sales in less than or equal to $100 million on or after January 1, 2027 from 10% to 12%. Additionally, the Prepayment Amount was modified such that, prior to March 31, 2026, the Company is entitled to settle the Revenue Interest Financing for a prepayment amount that would allow the investors to yield a 20% internal rate of return.

The RIFA Amendment was accounted for as a modification with the change in fair value of the PIPE Conversion Option treated as an exchange between the Company and RTW as part of the RIFA Amendment. As such, the Revenue Interest Financing and PIPE Conversion Option were remeasured as of April 16, 2024 just prior to the RIFA Amendment, to $33.0 million and $6.6 million, respectively. The Revenue Interest Financing and PIPE Conversion Option were subsequently remeasured as of April 16, 2024 under the terms of the RIFA Amendment, to $39.0 million and $4.6 million, respectively.

In connection with the Company entering into the Revenue Interest Financing, if, at any time beginning 12 months and ending 24 months following the closing of the Mergers, the VWAP per share of Allurion Common Stock is less than $176.00 for the average of 20 trading days within any 30 trading day period (“Stock Price Drop”); and the absolute value of the percentage decrease of such Stock Price Drop measured from a reference price of $250.00 per share of Allurion Common Stock is greater than the absolute value of the percentage decrease in the VWAP of a comparable publicly traded peer index as defined in the Amended and Restated RTW Side Letter over the same time period, then RTW may elect to convert up to $7.5 million of its initial PIPE Investment into additional revenue interest financing to be added to the Investment Amount by forfeiting a number of shares of Allurion Common Stock acquired in the PIPE Investment. Such additions to the Investment Amount would result in proportional increases to the minimum aggregate revenue interest payments described above (the "PIPE Conversion Option"). The PIPE Conversion Option is accounted for as a derivative under ASC 815. The PIPE Conversion Option was initially measured at its issue-date estimated fair value of $3.3 million within Other liabilities on the condensed consolidated balance sheets with corresponding recognition of expense at inception as there is no right received by the Company that meets the definition of an asset and the transaction did not involve a distribution or a dividend. The PIPE Conversion Option liability is subsequently remeasured at its estimated fair value on a recurring basis at each reporting period date, with a gain or loss recognized within Other income (expense).

On October 22, 2024, funds affiliated with RTW provided notice to the Company of their election of the PIPE Conversion Option under the Amended and Restated RTW Side Letter to surrender 30,000 shares of Common Stock of the Company representing $7.5 million in consideration for an additional Revenue Interest Financing Agreement. Accordingly, on October 30, 2024, the Company and the funds affiliated with RTW entered into the additional Revenue Interest Financing Agreement (the "New RIFA"). The New RIFA has substantially identical terms and conditions as the Revenue Interest Financing Agreement except that the amount of financing provided under the New RIFA is equal to the conversion amount of $7.5 million (the "Additional Investment Amount"). The Additional Investment Amount results in proportional increases to the minimum aggregate revenue interest payments described above.

The exercise of the PIPE Conversion Option was accounted for as a settlement of the derivative liability. As such, the PIPE Conversion Option was remeasured as of October 30, 2024 just prior to conversion, to $7.4 million. The PIPE Conversion Option was subsequently reclassified as an addition to the Revenue Interest Financing liability upon conversion into the New RIFA. The New RIFA was accounted for under the FVO election, similar to the Revenue Interest Financing. As such, the New RIFA, together with the Revenue Interest Financing was remeasured as of October 30, 2024 to $48.9 million. Additionally, to account for the 30,000 forfeited shares in connection with the exercise of the PIPE Conversion Option, the total shares were valued based on the October 30, 2024 closing share price of $18.25, resulting in a $0.5 million reduction of APIC. As of September 30, 2025, the fair value of the Revenue Interest Financing and New RIFA was $49.9 million.

For the three months ended September 30, 2025, the Company recorded a $2.6 million loss and a $5.4 million loss on the Revenue Interest Financing through the condensed consolidated statements of operations and other comprehensive income (loss), respectively. For the nine months ended September 30, 2025, the Company recorded a $6.3 million loss and a $3.6 million gain on the Revenue Interest Financing through the condensed consolidated statements of operations and other comprehensive income (loss), respectively. The changes in fair value were recorded in the Changes in fair value of Revenue Interest Financing and PIPE Conversion Option in the condensed consolidated statement of operations.

10. Fair Value Measurements

The following tables present the fair value hierarchy for the Company's assets and liabilities that are measured at fair value at issuance date and on a recurring basis and indicate the level within the fair value hierarchy of the valuation techniques the Company utilized to determine such fair value (in thousands):

Public Warrants

As a result of the Business Combination on August 1, 2023, the Company recorded a liability for Public Warrants to purchase the Company's Common Stock. The Public Warrants are traded on the NYSE and are recorded at fair value using the closing price as of September 30, 2025 of $0.03, which is a Level 1 input.

Legacy Allurion Warrants, Public Offering Warrants, July 2024 Private Placement Warrants, January 2025 Warrants, and February 2025 Offering Warrants

The Company has classified the Legacy Allurion Common Stock Warrants, Public Offering Warrants (defined below), July 2024 Private Placement Warrants (defined below), January 2025 Warrants (defined below) and February 2025 Offering Warrants (defined below) within Level 3 of the hierarchy as the fair value is derived using the Black-Scholes option pricing model, which uses a combination of observable (Level 2) and unobservable (Level 3) inputs. See table below for the assumptions used in the pricing model ofthe Legacy Allurion Common Stock Warrants, Public Offering Warrants, July 2024 Private Placement Warrants, January 2025 Warrants and February 2025 Offering Warrants:

Expected dividend yield for all calculations is 0.00%.

The following table reconciles the changes in fair value for the three and nine months ended September 30, 2025 and 2024 of the warrant liabilities valued using Level 3 inputs:

2019 Term Loan Success Fee Derivative Liability

The derivative liability for the success fee associated with Legacy Allurion's November 2019 loan and security agreement with Western Alliance Bank (the "2019 Term Loan" and such fee, the "Success Fee") was recorded at fair value as of September 30, 2025 and December 31, 2024 using the following assumptions: weighted-average probability for the likelihood of a change in control or liquidity event within four years from the initial valuation date of the derivative liability and a market-based discount rate that will increase or decrease each period based on changes in the probability in the future cash flows.

Revenue Interest Financing and PIPE Conversion Option

The Revenue Interest Financing is accounted for using the FVO election. Under the FVO election, the financial instrument is initially measured at its issue-date estimated fair value and subsequently remeasured at estimated fair value on a recurring basis at each reporting period date. The fair value of the Revenue Interest Financing was remeasured as of September 30, 2025 and December 31, 2024 using a discounted cash flow ("DCF") method under the income approach utilizing future revenue projections and a discount rate of 22.9% and 21.1%, respectively.

The fair value of the PIPE Conversion Option was accounted for as a derivative under ASC 815. Upon the exercise of the PIPE Conversion Option and resulting New RIFA on October 30, 2024, the PIPE Conversion Option was reclassified as an addition to the Revenue Interest Financing liability, and as such there is no PIPE Conversion Option liability as of September 30, 2025 and December 31, 2024.

Earn-Out Liability

Upon the closing of the Business Combination, the Earn-Out Shares were accounted for as a liability because the triggering events that determine the number of shares to be earned included events that were not indexed to Allurion Common Stock, with the change in fair value recognized in Change in the fair value of earn-out liabilities in the consolidated statement of operations. The estimated fair value of the Earn-Out Shares was determined using a MCSM with the following assumptions at each valuation date:

Term Loan Derivative Liability

The term loan derivative liability associated with the Fortress Term Loan was derecognized during the second quarter of 2024 as the Fortress Term Loan was repaid on April 16, 2024.

The RTW Convertible Notes are accounted for using the FVO election. Under the FVO election, the financial instrument is initially measured at its issue-date estimated fair value and subsequently measured at estimated fair value on a recurring basis at each reporting period date. The fair value of the RTW Convertible Notes was remeasured as of September 30, 2025 using a DCF method under the income approach with a MCSM applied to determine the simulated stock price at each payment date and event that may trigger conversion of the RTW Convertible Notes. The fair value was measured using the $43.0 million principal amount of the RTW Convertible Notes and the following assumptions:

Share Obligation

The Share Obligation is accounted for as a liability under ASC 480, with the liability initially measured at its issue-date estimate fair value and subsequently measured at its estimated fair value on a recurring basis at each reporting period date. The estimated fair value of the Share Obligation was determined using a MCSM with the following assumptions at the valuation date:

Thechanges in the fair values of the Success Fee derivative liability, 2023 Convertible Notes, Revenue Interest Financing, PIPE Conversion Option, Earn-out liability, Term Loan Derivative liability, RTW Convertible Notes, PubCo Share liability, Base PubCo and Backstop Share liability, and Warrant Overallotment liability categorized with Level 3 inputs for the three and nine months ended September 30, 2025 and 2024 were as follows:

The change in fair value of the Success Fee derivative liability, Revenue Interest Financing, PIPE Conversion Option, Earn-Out liability, Term Loan Derivative liability, RTW Convertible Notes, and Share Obligation liability at each period is recorded as a component of Other income (expense) in the condensed consolidated statements of operations, with the exception of the changes in fair value associated with the change in credit risk related to the Revenue Interest Financing and RTW Convertible Notes, which is recorded as a component of other comprehensive loss.

11. Income Taxes

The Company recorded income tax expense of less than $0.1 million and $0.1 million for the three and nine months ended September 30, 2025, respectively, representing effective tax rates of (0.1%) and (0.7%), respectively. The Company recorded income tax expense for the three and nine months ended September 30, 2024 of $0.1 million and $0.2 million, respectively, representing effectivetax rates of 0.8% and 8.0%, respectively. The tax expense recorded relates to the earnings of the Company’s profitable foreign subsidiaries.

On July 4, 2025, new U.S tax legislation was signed into law (known as the "One Big Beautiful Bill Act" or "OBBBA") which makes permanent many of the tax provisions enacted in 2017 as part of the Tax Cuts and Jobs Act that were set to expire at the end of 2025.The new legislation has multiple effective dates, with certain provisions effective in 2025 and others in the future. In accordance with ASC 740, Accounting for Income Taxes, the impacts of the OBBBA did not affect the Company’s U.S. deferred tax assets or liabilities, as the Company continues to maintain a full valuation allowance against those balances.

As of September 30, 2025 and 2024, the Company maintained a full valuation allowance against its net deferred tax assets as the Company has incurred significant operating losses since inception and has concluded that its net deferred tax asset is not more-likely-than-not realizable.

As of September 30, 2025 and 2024, the Company hasnot recorded tax reserves for any uncertain tax provisions.

12. Capital Stock and Stockholders' Deficit

Preferred Equity

On June 28, 2024, the Company entered into a subscription agreement (the "Subscription Agreement") with RTW, pursuant to which the Company agreed to sell to RTW 2,260,159 shares of a newly created series of preferred stock, the Series A non-voting convertible preferred stock, par value $0.0001 per share ("Series A Preferred Stock"), and 90,407 private placement warrants ("July 2024 Private Placement Warrants") to purchase Common Stock, equal to the per share Public Offering (defined below) price for the shares of Common Stock and Public Offering Warrants (defined below) in the Public Offering (the "July 2024 Private Placement"). The Private Placement closed on July 1, 2024 with net proceeds received of $2.5 million after deducting offering costs of $0.2 million.

The July 2024 Private Placement Warrants met the definition of a derivative under ASC 815. The gross proceeds from the July 2024 Private Placement were first allocated to the July 2024 Private Placement Warrants based on their issue-date estimated fair value of $1.7 million. The July 2024 Private Placement Warrants are subsequently remeasured at their estimated fair value on a recurring basis at each reporting period date, with a gain or loss recognized within Other income (expense). The remaining gross proceeds of $1.0 million were allocated to the Series A Preferred Stock. Of the $0.2 million in offering costs, $0.1 million was recorded against the Series A Preferred Stock as a reduction of proceeds and $0.1 million was expensed as general and administrative expenses in the condensed consolidated statement of operations and comprehensive loss.

On December 19, 2024, following the Series A Stockholder Approval (as defined below) and after giving effect to the Reverse Stock Split, the 2,260,159 shares of Series A Preferred Stock were converted to 90,407 shares of Common Stock.

The Charter authorizes the issuance of up to 100,000,000 shares of Allurion preferred stock. As of September 30, 2025, no shares of Allurion Series A Preferred Stock were outstanding. The rights and preferences of the Series A Preferred Shares are as follows:

Voting Rights

The Series A Preferred Stockholders haveno voting rights.

Dividend Rights

The Series A Preferred Stock participates in dividends with Common Stock on an as-converted basis when declared by the Board of Directors. No dividends were declared through September 30, 2025.

Liquidation Preference

In the event of any voluntary or involuntary liquidation, dissolution, or winding-up of the Company, payment shall be made to the holders of shares of Series A Preferred Stock on a pari passu basis with all holders of Common Stock. Each Series A Preferred Stock holder shall be entitled to receive out of the assets, whether capital or surplus, of the Company the same amount that a holder of Common Stock would receive if such holder’s Series A Convertible Preferred Stock were fully converted to Common Stock plus an additional amount equal to any dividends declared but unpaid to such share.

Conversion Rights

Each share of Series A Preferred Stock is convertible after the date that the Company's stockholders approve the conversion of the Series A Preferred Stock into shares of Common Stock in accordance with the listing rules of the NYSE (the “Series A Stockholder Approval”). Upon the Series A Stockholder Approval, each share of Series A Preferred Stock then outstanding shall automatically convert into (i) a number of shares of Common Stock equal to the number of Series A Preferred Stock outstanding at the time of conversion, adjustable for certain dilutive events, and (ii) pre-funded conversion warrants in the form agreed by the holder and the Company, exercisable for a number of shares of Common Stock equal to the number of Series A Preferred Stock outstanding at thetime of conversion, adjustable for certain dilutive events. This Series A Stockholder Approval was received on December 16, 2024.

Redemption

Each share of Series A Preferred Stock outstanding on December 31, 2026 (the “Redemption Date”) shall be automatically redeemed by the Company for cash at a redemption price equal to the volume-weighted average price per share of the Common Stock on the NYSE during the twenty consecutive trading day period ending and including the trading day immediately preceding the Redemption Date (the “Redemption Price”). The Series A Preferred Stock is redeemable at a determinable price (the Redemption Price) on a fixed date (the Redemption Date), which results in mezzanine equity classification (outside of permanent equity) on the Company’s condensed consolidated balance sheet.

Common Equity

Allurion's Certificate of Incorporation authorizes the issuance of up to 1,000,000,000 shares of Allurion Common Stock. As of September 30, 2025 and December 31, 2024,7,767,027 and 2,710,607 shares of Common Stock were issued and outstanding, respectively.

July 2024 Public Offering

On June 28, 2024, the Company entered into an underwriting agreement with Jefferies LLC and TD Securities (USA) LLC, as representative of the several underwriters (the "Underwriters"), pursuant to which the Company agreed to issue and sell 576,261 shares of the Company's Common Stock and warrants ("Public Offering Warrants") to purchase up to 576,261 shares of the Company's Common Stock at an offering price of $30.00 per share and accompanying warrant (the "Public Offering"). The Public Offering closed on July 1, 2024 with net proceeds received of $15.2 million after deducting underwriting discounts of $1.0 million and offering costs of $1.0 million. The Underwriters fully exercised their option for additional Public Offering Warrants, with 86,440 additional Public Offering Warrants issued at closing, for a total of 662,701 Public Offering Warrants. Further, the Underwriters exercised a portion of the option with respect to the Common Stock (the "Share Overallotment") on July 5, 2024 for net proceeds of $2.2 million, which resulted in the issuance of 77,091 shares of the Company's Common Stock at an offering price of $30.00 per share.

The Public Offering Warrants met the definition of a derivative under ASC 815 and the Share Overallotment met the requirements for equity classification under ASC 815. The $17.4 million in net proceeds from the Public Offering and exercise of the Share Overallotment were first allocated to the Public Offering Warrants based on their issue-date estimated fair value of $13.2 million. The Public Offering Warrants are subsequently remeasured at their estimated fair value on a recurring basis at each reporting period date, with a gain or loss recognized within Other income (expense). The $0.8 million offerings costs allocated to the Public Offering Warrants were expensed as general and administrative expenses in the condensed consolidated statement of operations and comprehensive loss. The remaining net proceeds of $5.1 million were allocated to Common Stock and APIC.

RTW Private Placement

On January 14, 2025, the Company entered into a subscription agreement (the “RTW Subscription Agreement”) with funds affiliated with RTW, pursuant to which the Company agreed to sell 841,751 shares of Common Stock at a purchase price of $2.97 per share (the “RTW Private Placement”). The RTW Private Placement closed on January 16, 2025 with net proceeds received of $2.5 million.

January 2025 Public Offering and Concurrent Private Placement

On January 24, 2025, the Company entered into a securities purchase agreement (the “January 2025 Securities Purchase Agreement”) with certain accredited investors named therein, pursuant to which the Company agreed to issue and sell 1,240,000 shares of Common Stock (the “January 2025 Offering”) and 1,240,000 accompanying common warrants (the “January 2025 Warrants”) to purchase up to 1,240,000 shares of Common Stock upon exercise of the January 2025 Warrants in a concurrent private placement (the “January 2025 Private Placement”), at an offering price of $6.00 per share and accompanying January 2025 Warrant. The January 2025 Offering and January 2025 Private Placement closed on January 27, 2025 with net proceeds of $5.8 million after deducting placement agent fees of $0.6 million and offering costs of $1.0 million.

Certain purchasers in the January 2025 Offering and January 2025 Private Placement are holders of warrants to purchase Common Stock issued in the Public Offering in July 2024. The exercise price for the Public Offering Warrants initially was $30.00 per share. In consideration for such purchasers’ purchase of securities in the January 2025 Offering and January 2025 Private Placement, we agreed with each such purchaser to seek stockholder approval to reduce the exercise price of the Public Offering Warrants held by such purchasers to $6.00 per share (the "January Warrant Repricing"). Such Public Offering Warrants will become exercisable at the revised exercise price upon the receipt of such stockholder approval, which approval was obtained on April 10, 2025. The Public Offering Warrants were remeasured to account for the incremental fair value, with the $0.5 million loss recognized within Other income (expense).

The January 2025 Warrants met the definition of a derivative under ASC 815. The $5.8 million in net proceeds were first allocated to the January 2025 Warrants based on their issue-date estimated fair value of $5.3 million. The January 2025 Warrants are subsequently remeasured at their estimated fair value on a recurring basis at each reporting period date, with a gain or loss recognized within Other income (expense). The $0.8 million of offering costs allocated to the January 2025 Warrants were expensed as general and administrative expenses in the condensed consolidated statement of operations and comprehensive loss. The remaining net proceeds of $1.3 million were allocated to Common Stock and APIC.

February 2025 Public Offering and Concurrent Private Placement and Leavitt Private Placement

On February 19, 2025, the Company entered into a securities purchase agreement (the “February 2025 Securities Purchase Agreement”) with certain accredited investors named therein, pursuant to which the Company agreed to issue and sell 900,000 shares of Common Stock (the “February 2025 Offering”), and 1,800,000 accompanying common warrants (the “February 2025 Warrants”) to purchase up to 1,800,000 shares of Common Stock upon exercise of the February 2025 Warrants in a concurrent private placement (the “February 2025 Private Placement”), at an offering price of $5.23 per share and accompanying February 2025 Warrant. The February 2025 Offering and February 2025 Private Placement closed on February 20, 2025 with net proceeds of $3.9 million after deducting placement agent fees of $0.4 million and offering costs of $0.4 million.

Additionally, on February 19, 2025, the Company entered into a subscription agreement (the “Leavitt Subscription Agreement”) with an accredited investor affiliated with Leavitt Equity Partners LLC (collectively, “Leavitt”), pursuant to which the Company agreed to issue and sell 267,686 shares of Common Stock (the “Private Placement Shares”) and common warrants to purchase up to 535,372 shares of Common Stock (the “Leavitt Private Placement Warrants” and together with the February 2025 Warrants, the “February 2025 Offering Warrants”), at a purchase price of $5.23 per share and accompanying Private Placement Warrant (the “Leavitt Private Placement”). The Leavitt Private Placement closed on February 20, 2025 with net proceeds of $1.3 million after deducting placement agent fees of $0.1 million. Leavitt is a holder of Public Offering Warrants with an initial exercise price of $30.00 per share. In consideration for Leavitt's purchase of securities in the Leavitt Private Placement, we agreed to seek stockholder approval to reduce the exercise price of the Public Offering Warrants held by Leavitt to $6.00 per share (the "February Warrant Repricing"). Such Public Offering Warrants will become exercisable at the revised exercise price upon the receipt of such stockholder approval, which approval was obtained on April 10, 2025. The Public Offering Warrants were remeasured to account for the incremental fair value, with the $0.2 million loss recognized within Other income (expense).

The February 2025 Offering Warrants met the definition of a derivative under ASC 815. The $5.2 million in net proceeds were first allocated to the February 2025 Offering Warrants based on their issue-date estimated fair value of $5.0 million. The February 2025 Offering Warrants are subsequently remeasured at their estimated fair value on a recurring basis at each reporting period date, with a gain or loss recognized within Other income (expense). The $0.4 million of offering costs allocated to the February 2025 Offering Warrants were expensed as general and administrative expenses in the condensed consolidated statement of operations and comprehensive loss. The remaining net proceeds of $0.6 million were allocated to Common Stock and APIC.

The number of shares of Common Stock that have been reserved for issuance upon the potential conversion or exercise, as applicable, of the Company’s securities as of September 30, 2025, is as follows:

Warrants to Purchase Common Stock

In connection with the closing of the Business Combination, all outstanding warrants to purchase Legacy Allurion preferred stock and Legacy Allurion common stock were converted into Rollover Warrants to purchase Allurion Common Stock using the Exchange Ratio. As of September 30, 2025, there were 14,380 Rollover Warrants outstanding to purchase Common Stock. Upon the closing of the Business Combination, certain Legacy Allurion preferred stock and Legacy Allurion common stock warrants that were converted into Rollover Warrants were determined to be equity classified.

In connection with the Public Offering and July 2024 Private Placement, we issued the Public Offering Warrants and July 2024 Private Placement Warrants. As of September 30, 2025, there were 662,701 Public Offering Warrants and 90,407 July 2024 Private Placement Warrants outstanding to purchase Common Stock. In connection with the January 2025 Public Offering and concurrent January 2025 Private Placement, and the February 2025 Public Offering and concurrent February 2025 Private Placement and Leavitt

Private Placement, we issued the January 2025 Warrants and February 2025 Offering Warrants. As of June 30, 2025, there were 1,240,000 January 2025 Warrants and 2,335,372 February 2025 Offering Warrants outstanding to purchase Common Stock.

In Compute Health's initial public offering, it sold units at a price of $10.00 per unit, which consisted ofone share of Class A Common Stock, $0.0001 par value, of Compute Health ("Class A Common Stock") andone-half of a redeemable warrant (each a "Public Warrant") that entitled the holder to purchaseone share of Class A Common Stock of CPUH at a price of $11.50 per share. On July 26, 2023, Compute Health's Public Warrant holders approved an amendment (the “Warrant Amendment”) to the warrant agreement that governed all Compute Health’s Public Warrants. Per the terms of the Warrant Amendment, upon completion of the Business Combination after giving effect to the Reverse Stock Split, each of the outstanding Compute Health Public Warrants became exercisable for 0.056818 shares of the Company’s Common Stock at an exercise price of $202.50 per share and each whole Compute Health Public Warrant was exchanged for 0.6125 (prior to giving effect to the Reverse Stock Split) Allurion Public Warrants in the Business Combination. The Public Warrants will expire August 1, 2030, seven years after the completion of the Business Combination, or earlier upon redemption or liquidation.

The Company may redeem the outstanding Public Warrants for cash at a price of $0.25 per Public Warrant at any time commencing 90 days after the completion of the Business Combination, and provided that the last sales price of the Company’s Common Stock equals or exceeds $316.75 per share for any 20 trading days within a 30-day trading period ending on the third trading day prior to the date on which notice of redemption is given.

The Company may redeem the outstanding Public Warrants for shares of our Common Stock at a price of $2.50 per Public Warrant at any time commencing 90 days after the completion of the Business Combination, and provided that the last sales price of the Company’s Common Stock equals or exceeds $176.00 pershare for any 20 trading days within a 30-day trading period ending on the third trading day prior to the date on which notice of redemption is given. Holders of the Public Warrants will be able to exercise their warrants on a cashless basis prior to redemption and receive that number of shares based on the redemption date and the fair market value (the “Redemption Fair Market Value”) of the shares of the Company's Common Stock. The Redemption Fair Market Value is determined based on the volume weighted average price of the Company’s Common Stock for the ten trading days immediately following the date on which notice of redemption is sent to the holders. As of September 30, 2025, the Company has not redeemed any of the outstanding Public Warrants. As of September 30, 2025, there were 13,206,720 outstanding Public Warrants exercisable for 750,383 shares of Allurion Common Stock.

Chardan Equity Facility

On December 18, 2023, we entered into a ChEF Purchase Agreement (the "Purchase Agreement") and a Registration Rights Agreement, each with Chardan Capital Markets ("Chardan") related to a "ChEF," Chardan's committed equity facility (the "Chardan Equity Facility"). Pursuant to the Purchase Agreement, the Company has the right from time to time at its option to sell to Chardan up to the lesser of (i) $100,000,000 in aggregate gross purchase price of newly issued shares of the Company's Common Stock, and (ii)379,299 shares of Common Stock, which number of shares is equal to 19.99% of the shares of the Common Stock outstanding immediately prior to the execution of the Purchase Agreement. In consideration for Chardan's entry into the Purchase Agreement, Allurion issued to Chardan 1,421 shares of Allurion Common Stock (the "Commitment Shares"). The Company recorded $0.1 million to additional paid-in capital and $0.1 million of expense in connection with the issuance of the Commitment Shares. The Company expensed an additional $0.1 million related to a non-refundable structuring fee immediately following commencement. As of September 30, 2025, the Company had sold 377,879 shares of Common Stock to Chardan at a purchase price of $1.8 million in connection with the Purchase Agreement.

13. Net Income (Loss) per Share

Basic and diluted net loss per share was calculated as follows:

For the three months ended September 30, 2025, the Company’s potentially dilutive securities have been excluded from the computation of diluted net loss per share as the effect would be to reduce the net loss per share. Therefore, the weighted average number of shares of Common Stock outstanding used to calculate both basic and diluted net loss per share attributable to stockholders is the same. The Company excluded the following potential shares of Common Stock, presented based on amounts outstanding at each period end, from the computation of diluted net loss per share attributable to stockholders for the periods indicated because including them would have had an anti-dilutive effect. For the three months ended September 30, 2024, the Company excluded the following potential shares of Common Stock, presented based on amounts outstanding at each period end, from the computation of diluted net income per share attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect. As the triggering event under which the Earn-Out Shares become issuable had not been met as of September 30, 2024, the Earn-Out Shares have been excluded from the computation of diluted net income per share.

For the nine months ended September 30, 2025, the Company’s potentially dilutive securities have been excluded from the computation of diluted net loss per share as the effect would be to reduce the net loss per share. Therefore, the weighted average number of shares of Common Stock outstanding used to calculate both basic and diluted net loss per share attributable to stockholders is the same. The Company excluded the following potential shares of Common Stock, presented based on amounts outstanding at each period end, from the computation of diluted net loss per share attributable to stockholders for the periods indicated because including them would have had an anti-dilutive effect. For the nine months ended September 30, 2024, the Company excluded the following potential shares of Common Stock, presented based on amounts outstanding at each period end, from the computation of diluted net income per share attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect. As the triggering event under which the Earn-Out Shares become issuable had not been met as of September 30, 2024, the Earn-Out Shares have been excluded from the computation of diluted net income per share.

14. Stock Based Compensation

Stock Incentive Plans

The Company’s 2010 Stock Incentive Plan (the “2010 Plan”) provided for the grant of qualified incentive stock options, nonqualified stock options, and other awards to the Company’s employees, officers, directors, advisors, and outside consultants to purchase the Company’s Common Stock. On December 11, 2020, the Company’s Board of Directors adopted the Amended and Restated 2020 Stock Option and Grant Plan (the “2020 Plan”), which provided for the grant of qualified incentive stock options, nonqualified stock options, and other awards to the Company’s employees, officers, directors, advisors, and outside consultants to purchase the Company’s Common Stock. Each stock option from the 2010 Plan and the 2020 Plan that was outstanding immediately prior to the Business Combination, whether vested or unvested, was cancelled and exchanged for a stock option to purchase Allurion Common Stock based on the Exchange Ratio. The per share exercise price for each stock option was divided by the Exchange Ratio.

In connection with the closing of the Business Combination, the Company adopted the 2023 Stock Option and Incentive Plan (the "2023 Plan"), which provides for the award of stock options (both incentive and non-qualified), stock appreciation rights, restricted stock units ("RSUs"), restricted stock awards, cash-based awards, and dividend equivalent rights. As of September 30, 2025, a total of 244,952 shares of Allurion Common Stock are reserved for issuance under the 2023 Plan. The 2023 Plan provides that the number of shares reserved for issuance under the 2023 Plan will automatically increase each January 1, beginning January 1, 2024 and ending January 1, 2033, by 5%of the number of fully diluted outstanding shares of Allurion Common Stock as of the immediately preceding December 31 or such lesser amount as determined by the Board of Directors and the compensation committee of the Board of Directors.

As of September 30, 2025, 585,994 options and RSUs were issued and outstanding under the 2010 Plan, 2020 Plan, and 2023 Plan. As of December 31, 2024,370,272 options and RSUs were issued and outstanding under the 2010 Plan, 2020 Plan, and 2023 Plan. The stock options generally vest over afour-year period and expire 10 years from the date of grant.

Stock-based compensation expense included in the condensed consolidated statement of operations was as follows:

Stock Options

The following table summarizes the option activity under the 2010 Plan, 2020 Plan, and the 2023 Plan during the nine months ended September 30, 2025:

Total stock compensation expense related to stock option awards during the three and nine months ended September 30, 2025 was $0.4 million and $1.5 million, respectively. As of September 30, 2025, there was approximately $2.4 million of unrecognized compensation costs related to unvested stock options granted under the 2010 Plan, 2020 Plan, and 2023 Plan, which is expected to be recognized over a weighted-average vesting term of 2.2 years. There were no stock options granted during the nine months ended September 30, 2025. The weighted average grant-date fair value of the stock option awards granted during the nine months ended September 30, 2024 was $32.50 per option.

The fair value of each option award is estimated on the date of grant using the Black-Scholes option-pricing model and the assumptions noted in the table below. Expected volatility for the Company’s Common Stock was determined based on an average of the historical volatility of a peer group of public companies that are similar to the Company. The expected term of options granted to employees was calculated using the simplified method, which represents the average of the contractual term of the option and the weighted-average vesting period of the option. The Company uses the simplified method because it does not have sufficient historical option exercise data to provide a reasonable basis upon which to estimate expected term. The expected term of options granted to non-employees is the remaining contractual term of the award. The assumed dividend yield is based upon the Company’s expectation of not paying dividends in the foreseeable future. The risk-free rate for periods within the expected life of the option is based upon the U.S. Treasury yield curve in effect at the time of grant.

There wereno options granted during the nine months ended September 30, 2025. The assumptions used in the Black Scholes option-pricing model for the nine months ended September 30, 2024 is as follows:

Restricted Stock Units

In December 2022, the Company issued RSUs to a member of the Board of Directors with vesting subject to both a performance-based closing condition dependent on the successful Business Combination with Compute Health and time-based vesting conditions. See Note 3, Business Combination for information about the closing of the Business Combination with Compute Health. Upon the satisfaction of the closing condition,62.5% of the RSUs awarded vested. Thereafter, the remaining 37.5% of the RSUs vest monthly over a period oftwo years. All RSUs are subject to forfeiture if the grantee’s continuous service relationship as a member of the Board of Directors terminates prior to vesting. In October 2023 and March 2024, the Company issued RSUs to the members of the Board that vest in equal installments over three years, subject to continued service as a director through each vesting date. In November 2024 and May 2025, additional RSUs were issued with two year and three year vesting periods, respectively. Additionally, in April 2025, the Company issued performance share units ("PSU") to one of it's employees. The PSUs granted by the Company vest in connection with the achievement of certain commercial milestones. The expense recognized for these awards is based on the probability of such achievement. The Company did not record any stock compensation expense related to employee PSUs for the nine months ended September 30, 2025.

The following table summarizes the restricted stock unit activity under the 2020 Plan and 2023 Plan during the nine months ended September 30, 2025:

Total stock compensation expense related to RSUs for the three and nine months ended September 30, 2025 was $0.1 million and $0.9 million, respectively. As of September 30, 2025, there were $1.7 million of unrecognized compensation costs related to nonvested RSUs granted under the 2020 Plan and 2023 Plan, which is expected to be recognized over a remaining weighted-average vesting term of 2.3 years.

Employee Stock Purchase Plan

In connection with the closing of the Business Combination, the Company adopted the 2023 Employee Stock Purchase Plan (the "2023 ESPP"). Under the 2023 ESPP, substantially all employees may voluntarily enroll to purchase the Company's Common Stock through payroll deductions at a price equal to 85% of the lower of the fair market values of the stock as of the beginning or end of the offering period. An employee's payroll deductions under the 2023 ESPP are limited to 15% of the employee's compensation.

A total of 131,435 shares of the Company's Common Stock are reserved and authorized for issuance under the 2023 ESPP, as of September 30, 2025. In addition, the number of shares of Common Stock available for issuance under the 2023 ESPP will automatically increase each January 1, beginning on January 1, 2024 and each January thereafter, by the lesser of (i)1% of the fully diluted outstanding shares of our Common Stock as of the immediately preceding December 31, (ii)64,000 sharesof our Common

Stock, or (iii) such lesser number of shares determined by the administrator of the 2023 ESPP. As of September 30, 2025, no shares have been issued under the 2023 ESPP.

15. Employee Benefit Plan

The Company has a 401(k) retirement plan that covers eligible U.S. employees. Eligible employees may elect to contribute up to the maximum limits, as set by the Internal Revenue Service, of their eligible compensation. The Company may elect to make a discretionary contribution or match a discretionary percentage of employee contributions. During each of the three and nine months ended September 30, 2025 and 2024, the Company's matching contributions to the plan were less than $0.1 million.

16. Commitments and Contingencies

Leases

With respect to contracts involving the use of assets, if the Company has the right to direct the use of the asset and obtain substantially all economic benefits from the use of an asset, it accounts for the service contract as a lease.

As of September 30, 2025, the Company was a party to three different leases for office, manufacturing, and laboratory space under non-cancelable office leases in two cities. These leases total approximately 30,000 square feet and will expire between February 2026 and February 2028. The Company has aright to extend certain of these leases for periods between three and five years. The Company also holds immaterial leases related to vehicles and office equipment. Under its real property leases, the Company pays base rent and a proportional share of operating expenses. Such operating expenses are subject to annual adjustment and are accounted for as variable payments in the period in which they are incurred.

In April 2024, the Company executed an amendment to one of its leases in Natick, Massachusetts. The amendment was accounted for as a modification of the existing lease agreement, with impacts to the lease term, lease payments, and related lease liability for the lease. As a result of this amendment, the lease in Natick expired in March 2025 and additional operating lease assets obtained in exchange for lease obligations were less than $0.1 million. In February 2024 and April 2025, the Company terminated each of its leases in Paris, France. Additionally, in June 2025, the Company executed an amendment to another one of its leases in Natick, Massachusetts. The amendment was accounted for as a modification of the existing lease agreement, with impacts to the lease term, lease payments, and related lease liability for the lease. As a result of this amendment, the lease in Natick will now expire in November 2028 and additional operating lease assets obtained in exchange for lease obligations were $0.4 million.

In July 2025, the Company signed an Assignment of Lease and Consent to Assignment (the "Lease Assignment") for one of its Natick leases ending March 2028, whereby a third-party agreed to assume the Company's rights, duties and obligations under the lease beginning September 1, 2025. The lease assignment was contingent upon the landlord's consent and the Company is secondarily liable to the third-party assignee for obligations under the lease. For each of the three and nine months ended September 30, 2025 the Company derecognized the related operating lease right-of-use asset and operating lease liability of $0.5 million and recognized a gain on lease termination of less than $0.1 million related to the Lease Assignment.

The components of right-of-use ("ROU") assets and lease liabilities are included in the condensed consolidated balance sheets. The short-term portion of the Company's operating lease liability is recorded as part of Accrued expenses and other current liabilities on the condensed consolidated balance sheets.

Aggregate Lease Information

Other pertinent lease information for the three and nine months ended September 30, 2025 and 2024 is as follows (in thousands):

Future commitments under non-cancelable operating lease agreements as of September 30, 2025 are as follows (in thousands):

The weighted-average remaining lease terms and discount rates related to our leases were as follows:

Product Liability

The Company has not received any material product liability claims. Notwithstanding this, the Company has obtained and maintains insurance related to potential product liability claims.

Litigation and Claims

In the normal course of operations, the Company may become involved in various claims and legal proceedings related to, for example, the validity or scope of its intellectual property rights, employee-related matters, securities class actions, or adverse patient reactions. Additionally, during the normal course of business, the Company may be a party to legal claims that may not be covered by insurance.

On August 12, 2025, Vanderbilt University Medical Center (“Vanderbilt”) filed a complaint against the Company in the United States District Court for the Middle District of Tennessee, captioned Vanderbilt University Medical Center v. Allurion Technologies, Inc., d/b/a Allurion. Vanderbilt's complaint alleges that the Company breached the Clinical Trial Agreement, dated June 30, 2022, by and between the Company and Vanderbilt (the "Clinical Trial Agreement"), related to the clinical trial for the Smart Capsule by failing to reimburse medical expenses incurred in treating a patient enrolled in such trial at Vanderbilt. Vanderbilt is seeking damages of approximately $2.5 million.

As of September 30, 2025 and December 31, 2024, the Company has recorded accruals for the contractual obligations under the Clinical Trial Agreement with Vanderbilt.

French Regulatory Decision

On August 6, 2024, it was announced that the Agence Nationale de Sécurité du Médicament (“ANSM”), the French regulatory authority, had suspended sales of the Allurion Balloon in France, and the Company withdrew the device from the French market. The Company implemented a remediation plan to reduce certain risks associated with the advertising, follow-up program, and adverse events for the Allurion Balloon. For the year ended December 31, 2024, the Company recognized a reduction to revenues of $1.2 million for customer returns of the Allurion Balloon, and there were no sales to France during the second half of 2024. On February 12, 2025, ANSM cleared the Company to resume sales of the Allurion Balloon, effective immediately.

NYSE Continued Listing Standards

On August 29, 2024, the Company received written notice from the NYSE notifying the Company that as of August 29, 2024, Allurion was not in compliance with the continued listing standard set forth in Section 802.01B of the NYSE’s Listed Company Manual (the "Minimum Market Capitalization Standard") because our average market capitalization was less than $50.0 million over the consecutive 30 trading-day period ended August 29, 2024 and our last reported stockholders’ equity as of August 29, 2024 was less than $50.0 million. In accordance with applicable NYSE procedures, within 45 days of receipt of the notice, we submitted a plan to the NYSE outlining measures that would bring us into conformity with the Minimum Market Capitalization Standard within 18 months of receipt of the written notice (the "Cure Period"). We submitted a business plan to the NYSE demonstrating our ability to regain compliance with the NYSE's rules, which the NYSE has accepted, and as a result we are subject to quarterly monitoring for compliance with the business plan and our Common Stock will continue to trade on the NYSE during the Cure Period, subject to our compliance with other NYSE continued listing standards.

17. Segment Information

Segment reporting is prepared on the same basis that the Company'schief executive officer, who is our chief operating decision maker (“CODM”), manages the business, makes operating decisions, and assesses performance. The Company operates inone segment. We have selected net income (loss) as our reported measure of profit or loss because it is regularly provided to our CODM, allows our CODM to make decisions on resource allocations, and allows our CODM to assess performance of the business.

Disclosures about significant segment expenses and long-lived assets by geography are presented below. Refer to Note 4, Revenue for information on revenue by geography.

Significant segment expenses are set forth in the following table (in thousands):

(1) Other segment items included in Net income primarily include changes in fair value of warrant liabilities, changes in fair value of debt, changes in fair value of the Revenue Interest Financing, loss on extinguishment of debt, interest expense, and other income.

Long-lived assets, consisting of property and equipment, net and ROU assets by geography were as follows (in thousands):

18. Related-party Transactions

Lease Agreement with Related Party

In August 2022, the Company entered into an operating lease agreement for additional office space in Paris, France with LNMP JPBC Invest. The Company’s then-Trade Marketing Director was the signor of this lease for LNMP JPBS Invest. Additionally, the Company’s former Chief Commercial Officer is also a partner of LNMP JPBC Invest. The lease agreement included lease payments of approximately $0.1 million per year. The term of the lease was August 1, 2022 through July 31, 2025. The Company concluded that the commercial terms of the lease agreement were competitive, at the current market rate and conducted at arm’s-length. This lease was terminated in February 2024.

Convertible Note Agreement with RTW

Pursuant to the Amended Note Purchase Agreement, on April 16, 2024, we issued and sold $48 million aggregate principal amount of convertible notes to RTW. RTW holds more than 5% of our outstanding Common Stock, has the right to designate an independent director nominee to be elected by our stockholders, is entitled to designate one representative to serve as a non-voting observer on our Board, and has the right to approve an additional director nominee for election In September 2024, we expanded our Board and appointed a new director in satisfaction of certain of these obligations to RTW as set forth in the Amended Note Purchase Agreement. Refer to Note 8, Debt, for additional information regarding the RTW Convertible Notes.

RTW Participation in Public Offering

In connection with the Public Offering, the Company issued and sold 9,594 shares of Common Stock and accompanying warrants to funds affiliated with RTW, for an aggregate purchase price of approximately $0.3 million. The Public Offering closed on July 1, 2024.

Private Placement with RTW

On June 28, 2024, pursuant to the Subscription Agreement, the Company agreed to sell to RTW 2,260,159 shares of Series A Preferred Stock(converted to 90,407 shares of Common Stock on December 19, 2024 following the Series A Stockholder Approval and after giving effect to the Reverse Stock Split), and 90,407 July 2024 Private Placement Warrants, for an aggregate purchase price of approximately $2.7 million. The July 2024 Private Placement closed on July 1, 2024.

Exercise of PIPE Conversion Option and New RIFA with RTW

On October 22, 2024, funds affiliated with RTW provided notice to the Company of their election of the PIPE Conversion Option under the Amended and Restated RTW Side Letter, to surrender 30,000 shares of Common Stock of the Company representing $7.5 million in consideration for an additional Revenue Interest Financing Agreement. Accordingly, on October 30, 2024, the Company and the funds affiliated with RTW entered into the New RIFA. The New RIFA has substantially identical terms and conditions as the Revenue Interest Financing Agreement except that the amount of financing provided under the New RIFA is equal to the conversion amount of $7.5 million.

January 2025 Private Placement with RTW

On January 14, 2025, the Company entered into the RTW Subscription Agreement with funds affiliated with RTW, pursuant to which the Company agreed to sell 841,751 shares of Common Stock at a purchase price of $2.97 per share. The January 2025 Private Placement closed on January 16, 2025 with net proceeds received of $2.5 million.

Second Amendment to Amended Note Purchase Agreement

On April 15, 2025, the Company, the Purchasers and RTW, as agent for the Purchasers entered into the Second Amendment to Note Purchase Agreement, which amended the Amended Note Purchase Agreement to reflect additional conversion and other provisions, including provisions permitting the conversion of the RTW Convertible Notes at reduced conversion prices, resulting in the potential issuance of additional shares, which had been approved by the Company’s stockholders at the Special Meeting of Stockholders held on April 10, 2025. On April 16, 2025, subject to the terms of the Second Amendment to Note Purchase Agreement, the Purchasers provided notice of conversion of $5.0 million of principal amount of the RTW Convertible Notes, for an aggregate of 1,492,539 shares of Common Stock.

19. Subsequent Events

RTW Note Conversion

On November 4, 2025, pursuant to the terms of the Second Amendment to Note Purchase Agreement, the Purchasers provided notice of conversion of $5.0 million of principal amount of the RTW Convertible Notes at the Floor Conversion Rate, which notice was accepted by the Company on November 5, 2025. The Company subsequently issued an aggregate of 1,492,539 shares of Common Stock to the Purchasers in accordance with the terms of the Second Amendment to Note Purchase Agreement.

November 2025 Private Placement

On November 11, 2025, the Company entered into a securities purchase agreement (the "November 2025 Securities Purchase Agreement") with certain accredited investors named therein, pursuant to which the Company agreed to issue and sell 2,994,012 shares (the "November 2025 Private Placement Shares") of Common Stock and accompanying warrants to purchase up to 2,994,012 shares of Common Stock (the "November 2025 Private Placement Warrants," and together with the November 2025 Private Placement Shares, the "November 2025 Private Placement Securities"), for an aggregate purchase price of approximately $5.0 million at a purchase price of $1.67 per share and accompanying Private Placement Warrant (the "November 2025 Private Placement").

The November 2025 Securities Purchase Agreement contains customary representations, warranties and agreements by the Company, customary conditions to closing, certain obligations of the parties, and indemnification provisions. The Company is required to use its reasonable best efforts to hold a meeting of stockholders no later than January 31, 2026 for the purpose of, among other things, obtaining stockholder approval of the issuance of the shares of Common Stock issuable upon exercise of the November 2025 Private Placement Warrants.

Exchange Agreement with RTW

On November 11, 2025, the Company entered into a securities purchase and exchange agreement (the "Exchange Agreement") with certain entities managed by RTW, pursuant to which RTW has agreed to exchange all of the (i) principal amount of convertible senior secured notes (the "Notes"), purchased pursuant to the terms of the Amended Note Purchase Agreement, including interest accrued on the Notes; (ii) Company obligations under the Revenue Interest Financing Agreement; and (iii) Company obligations underthe New RIFA (together with the Revenue Interest Financing Agreement, the "RIFAs") for shares of a newly issued series of Series B convertible preferred stock, par value $0.0001 per share ("Series B Preferred Stock") of the Company (the "Exchange").

The Exchange Agreement contains customary representations, warranties and agreements by the Company, customary conditions to closing, certain obligations of the parties, and indemnification provisions. RTW's obligation to consummate the closing of the Exchange is conditioned upon, among other things, the receipt of stockholder approval of the issuance of the Series B Preferred Stock no later than January 31, 2026.