X0508 4 2025-04-16 0001964979 ALLURION TECHNOLOGIES, INC. ALUR 0001493215 RTW INVESTMENTS, LP 40 10TH AVENUE, 7TH FLOOR NEW YORK NY 10014 1 0 1 0 0001493280 WONG RODERICK 40 10TH AVENUE, 7TH FLOOR NEW YORK NY 10014 1 0 1 0 0001493219 RTW MASTER FUND, LTD. 40 10TH AVENUE, 7TH FLOOR NEW YORK NY 10014 1 0 1 0 0001776733 RTW Innovation Master Fund Ltd. 40 10TH AVENUE, 7TH FLOOR NEW YORK NY 10014 1 0 1 0 0 Common Stock, $0.0001 par value per share 2025-04-16 4 C 0 822722 3.35 A 1324532 I Please see footnotes Common Stock, $0.0001 par value per share 2025-04-16 4 C 0 631954 3.35 A 1027287 I Please see footnotes Common Stock, $0.0001 par value per share 2025-04-16 4 C 0 37863 3.35 A 164233 I Please see footnotes Common Stock, $0.0001 par value per share 26551 I Please see footnotes Convertible Note 3.35 2025-04-16 4 A 0 5000000 5000000 A 2031-04-16 Common Stock 1492539 5000000 I Please see footnotes Convertible Note 3.35 2025-04-16 4 C 0 5000000 5000000 D 2031-04-16 Common Stock 1492539 0 I Please see footnotes RTW Investments, LP (the "Adviser") manages certain funds that directly hold the securities reported on this Form 3, including RTW Master Fund, Ltd. ("Master Fund") and RTW Innovation Master Fund, Ltd. ("RTW Innovation," and, together with Master Fund and other funds or accounts managed by the Adviser, the "RTW Funds"). Roderick Wong, M.D. serves as the Managing Partner and Chief Investment Officer of the Adviser. Each Reporting Person disclaims beneficial ownership of the securities reported on this Form 4 except to the extent of its or his pecuniary interest, if any, therein, and this report shall not be deemed to be an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. Held by Master Fund. Held by RTW Innovation. Held by RTW Funds. On April 15, 2025, the conversion price of $5.0 million aggregate principal amount of the convertible senior secured notes held by the Reporting Persons (the "Notes") was amended from $40.50 per share to $3.35 per share. The remaining outstanding amount of the Notes remain convertible at a conversion price $40.50 per share, as well as additional conversion prices in the discretion of the Issuer (the "Discretionary Conversions"). The Notes bear interest at an annual rate of 6.0%, which is payable quarterly in cash, or, at the Issuer's option, in kind for the first three years. The reported amount of shares does not give effect to any increase in principal amount as a result of PIK interest payments. The maturity date of the Notes is April 16, 2031. Pursuant to the Note Purchase Agreement, as amended, the RTW Funds may not convert the Notes to the extent that such conversion would result in the RTW Funds beneficially owning more than 9.99% of the Company's common stock after giving effect to such conversion, unless converted pursuant to a Discretionary Conversion. Pursuant to the terms of the Note Purchase Agreement, RTW Investments has the right to designate two members of the Issuer's board of directors (the "Board"), and has designated Keith Johns and R. Jason Richey to the Board. Mr. Richey is a consultant of RTW Investments. /s/ Roderick Wong, M.D. - For RTW Investments, LP, By: Roderick Wong, M.D., Managing Partner 2025-04-17 /s/ Roderick Wong, M.D. 2025-04-17 /s/ Darshan Patel - For RTW Master Fund, Ltd., By: Darshan Patel, Director 2025-04-17 /s/ Darshan Patel - For RTW Innovation Master Fund, Ltd., By: Darshan Patel, Director 2025-04-17