ALUR.WS / Allurion Technologies Inc. - Equity Warrant - تصريحات هيئة الأوراق المالية والبورصات، التقرير السنوي، بيان الوكيل

Allurion Technologies Inc. - ضمان حقوق الملكية
US ˙ NYSE

الإحصائيات الأساسية
CIK 1964979
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Allurion Technologies Inc. - Equity Warrant
SEC Filings (Chronological Order)
توفر هذه الصفحة قائمة كاملة ومرتبة ترتيبًا زمنيًا لتصريحات هيئة الأوراق المالية والبورصات، باستثناء تصريحات الملكية التي نقدمها في مكان آخر.
August 28, 2025 10-Q/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q/A (Amendment No. 1)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q/A (Amendment No.

August 28, 2025 10-Q/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q/A (Amendment No. 1)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q/A (Amendment No.

August 28, 2025 10-Q/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q/A (Amendment No. 1)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q/A (Amendment No.

August 28, 2025 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 2)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 2) (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-4

August 21, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

424B3 Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 26 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 26 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the

August 21, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

424B3 Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 18 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 18 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Pro

August 21, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

424B3 Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 27 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 27 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the

August 21, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

424B3 Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 17 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 17 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Pro

August 19, 2025 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1) (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-4

August 19, 2025 EX-10.7

Eighth Amendment to 11 Huron Lease, dated as of June 20, 2025, by and between Allurion Technologies, Inc. and Legacy Huron, LLC.

Exhibit 10.7 EIGHTH AMENDMENT TO LEASE Legacy Huron, LLC, LESSOR and Allurion Technologies, Inc., LESSEE Reference is hereby made to a Lease dated June 15, 2016, as amended by the “First Amendment” to Lease dated as of November, 2016, as amended by the “Second Amendment” to lease dated March 20, 2017, as amended by the “Third Amendment” to Lease dated June 21, 2017, as amended by the “Fourth Amend

August 19, 2025 10-Q/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q/A (Amendment No. 1)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q/A (Amendment No.

August 19, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-41767 Allurion Technologies, Inc.

August 19, 2025 EX-4.4

Description of Capital Stock.

Exhibit 4.4 DESCRIPTION OF SECURITIES The following summary of the material terms of Allurion Technologies, Inc.’s (“Allurion”, the “Company”, “we”, or “our”) securities is not intended to be a complete summary of the rights and preferences of such securities. You are encouraged to read the applicable provisions of Delaware law, Allurion’s certificate of incorporation (“Charter”) and bylaws in the

August 15, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 25 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 25 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) whic

August 15, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 16 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 16 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Prospectus”) which fo

August 15, 2025 NT 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING (Check One):  ☐ Form 10-K  ☐ Form 20-F  ☐ Form 11-K  ☒ Form 10-Q ☐ Form 10-D  ☐ Form N-CEN  ☐ Form N-CSR For Period Ended: June 30, 2025 ☐

NT 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING (Check One):  ☐ Form 10-K  ☐ Form 20-F  ☐ Form 11-K  ☒ Form 10-Q ☐ Form 10-D  ☐ Form N-CEN  ☐ Form N-CSR For Period Ended: June 30, 2025 ☐ Transition Report on Form 10-K ☐ Transition Report on Form 20-F ☐ Transition Report on Form 11-K ☐ Transition Report on Form 10-Q For the Tra

August 14, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 14, 2025 Allurion Technolo

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 14, 2025 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commis

August 13, 2025 EX-99.1

Allurion Reports Second Quarter 2025 Financial Results and Provides Business Update

Exhibit 99.1 Allurion Reports Second Quarter 2025 Financial Results and Provides Business Update NATICK, Mass. – August 13, 2025 – Allurion Technologies, Inc. (NYSE: ALUR), a pioneer in metabolically healthy weight loss, today announced its financial results for the second quarter and provided a business update. Recent Company Highlights and Outlook • Announced new strategic direction focused on l

August 13, 2025 8-K

FORM 8-K Item 2.02 Results of Operations and Financial Condition. Item 7.01 Regulation FD Disclosure. Item 9.01 Financial Statements and Exhibits.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 13, 2025 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commis

August 7, 2025 EX-99.1

Allurion Announces New Strategic Direction With Increasing Focus on Low-Dose GLP-1 Combination Therapy, Muscle Mass Maintenance, and US Market Entry Signed term sheet with strategic partner to enhance distribution capabilities and R&D pipeline, inclu

Exhibit 99.1 Allurion Announces New Strategic Direction With Increasing Focus on Low-Dose GLP-1 Combination Therapy, Muscle Mass Maintenance, and US Market Entry Signed term sheet with strategic partner to enhance distribution capabilities and R&D pipeline, including the potential joint development of a novel, GLP-1 drug-eluting balloon Submitted protocol to IRBs for approval on prospective, multi

August 7, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 24 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 24 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) whic

August 7, 2025 8-K

FORM 8-K Item 2.02 Results of Operations and Financial Condition. Item 2.05 Costs Associated with Exit or Disposal Activities. Item 7.01 Regulation FD Disclosure. Item 9.01 Financial Statements and Exhibits.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 04, 2025 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commis

August 7, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 15 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 15 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Prospectus”) which fo

June 18, 2025 EX-FILING FEES

Calculation of Filing Fee Table Form S-8 (Form Type) Allurion Technologies, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered(1)

EX-FILING FEES Exhibit 107 Calculation of Filing Fee Table Form S-8 (Form Type) Allurion Technologies, Inc.

June 18, 2025 S-8

As filed with the Securities and Exchange Commission on June 18, 2025

As filed with the Securities and Exchange Commission on June 18, 2025 Registration No.

May 20, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

424B3 Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 23 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 23 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the

May 20, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 14 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 14 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Prospectu

May 15, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-41767 Allurion Technologies, Inc.

May 14, 2025 8-K

FORM 8-K Item 2.02 Results of Operations and Financial Condition. Item 9.01 Financial Statements and Exhibits.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 14, 2025 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commissio

May 14, 2025 EX-99.1

Allurion Reports First Quarter 2025 Financial Results and Provides Business Update

Exhibit 99.1 Allurion Reports First Quarter 2025 Financial Results and Provides Business Update NATICK, Mass.—May 14, 2025 — (BUSINESS WIRE) — Allurion Technologies, Inc. (NYSE: ALUR) (“Allurion” or the “Company”), a pioneer in metabolically healthy weight loss, today announced its financial results for the first quarter and provided a business update. Recent Company Highlights and Outlook • Maint

May 7, 2025 CORRESP

VIA EDGAR

CORRESP VIA EDGAR May 7, 2025 Securities and Exchange Commission Division of Corporation Finance Office of Life Sciences 100 F Street, N.

April 30, 2025 S-3

As filed with the Securities and Exchange Commission on April 29, 2025

S-3 Table of Contents As filed with the Securities and Exchange Commission on April 29, 2025 Registration No.

April 30, 2025 EX-FILING FEES

Filing Fee Table.

EX-FILING FEES EXHIBIT 107 Form S-3 (Form Type) Allurion Technologies, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security  Type  Security Class Title Fee Calculation or Carry Forward Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price(1) Fee Rate Amount of Registration Fee Newly

April 18, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 13 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 13 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Prospectus”) which forms pa

April 18, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 22 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 22 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which form

April 17, 2025 EX-10.1

Second Amendment to Note Purchase Agreement, dated as of April 15, 2025, by and among Allurion Technologies, Inc., the purchasers party thereto, and RTW Investments, LP, as agent for the purchasers.

Exhibit 10.1 SECOND AMENDMENT TO NOTE PURCHASE AGREEMENT This Second Amendment to Note Purchase Agreement (this “Amendment”), dated as of April 15, 2025, is among Allurion Technologies, Inc., a Delaware corporation (together with its successors and permitted assigns, the “Company”), the purchasers party to the Existing Note Purchase Agreement (as defined below), each, a “Purchaser” and, collective

April 17, 2025 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 15, 2025 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commiss

April 11, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 21 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 21 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which form

April 11, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 12 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 12 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Prospectus”) which forms pa

April 10, 2025 8-K

Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 10, 2025 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commiss

April 3, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

April 3, 2025 EX-99.1

Allurion Announces Postponement of Special Meeting of Stockholders Meeting to Now be Held on Thursday, April 10, 2025 at 12:00 pm Via Live Audio Webcast

EX-99.1 Exhibit 99.1 Allurion Announces Postponement of Special Meeting of Stockholders Meeting to Now be Held on Thursday, April 10, 2025 at 12:00 pm Via Live Audio Webcast NATICK, Mass. – April 3, 2025 – Allurion Technologies, Inc. (“Allurion” or the “Company”) (NYSE: ALUR), a company dedicated to ending obesity, today announced that its Special Meeting of Stockholders (the “Special Meeting”), o

April 3, 2025 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 3, 2025 ALLURION TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-41767 92-2182207 (State or other jurisdiction of incorporation) (Commissi

March 27, 2025 EX-21.1

List of subsidiaries of Allurion Technologies Holdings, Inc.

Exhibit 21.1 Subsidiaries of Allurion Technologies, Inc. Name of Subsidiary Jurisdiction of Incorporation Allurion France SAS France Allurion Middle East Medical Instrument Trading LLC United Arab Emirates Allurion UK Ltd. United Kingdom Allurion Italy,Srl Italy Allurion Spain, Srl Spain Allurion Australia Pty Ltd. Australia Allurion Mexico S. de R.L de C.V. Mexico Allurion Technologies, LLC. Dela

March 27, 2025 EX-97.1

Allurion Technologies, Inc. Compensation Recovery Policy.

Exhibit 97.1 ALLURION TECHNOLOGIES, INC. COMPENSATION RECOVERY POLICY Adopted as of July 31, 2023 Allurion Technologies, Inc., a Delaware corporation (the “Company”), has adopted a Compensation Recovery Policy (this “Policy”) as described below. 1. Overview The Policy sets forth the circumstances and procedures under which the Company shall recover Erroneously Awarded Compensation from Covered Per

March 27, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-41767 Allurion Techno

March 27, 2025 EX-19.1

Allurion Technologies, Inc. Insider Trading Policy.

Exhibit 19.1 ALLURION TECHNOLOGIES, INC. INSIDER TRADING POLICY This memorandum sets forth the policy of Allurion Technologies, Inc. and its subsidiaries (collectively, the “Company”) regarding trading in the Company’s securities as described below and the disclosure of information concerning the Company. This Insider Trading Policy (the “Insider Trading Policy”) is designed to prevent insider tra

March 27, 2025 EX-4.4

Description of Capital Stock.

Exhibit 4.4 DESCRIPTION OF SECURITIES The following summary of the material terms of Allurion Technologies, Inc.’s (“Allurion”, the “Company”, “we”, or “our”) securities is not intended to be a complete summary of the rights and preferences of such securities. You are encouraged to read the applicable provisions of Delaware law, Allurion’s certificate of incorporation (“Charter”) and bylaws in the

March 26, 2025 EX-99.1

Allurion Reports Fourth Quarter and Full-Year 2024 Financial Results and Provides Business Update

Allurion Reports Fourth Quarter and Full-Year 2024 Financial Results and Provides Business Update NATICK, Mass.

March 26, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 26, 2025 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commiss

March 24, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.  )

DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 13, 2025 PRER14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. 1)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. 1) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 1

February 28, 2025 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.  )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.  ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 1

February 21, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 19, 2025 ALLURION TECHNO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 19, 2025 ALLURION TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-41767 92-2182207 (State or other jurisdiction of incorporation) (Comm

February 21, 2025 EX-1.1

Placement Agency Agreement, dated as of February 19, 2025, by and between Allurion Technologies, Inc. and Roth Capital Partners, LLC.

Exhibit 1.1 PLACEMENT AGENCY AGREEMENT February 19, 2025      Roth Capital Partners, LLC 888 San Clemente Drive, Suite 400 Newport Beach, CA 92660 Ladies and Gentlemen: Introduction. Subject to the terms and conditions herein (this “Agreement”), Allurion Technologies, Inc., a Delaware corporation (the “Company”), hereby agrees to sell up to an aggregate of $6,107,000 of securities of the Company,

February 21, 2025 EX-99.1

Allurion to Raise Approximately $6.1 Million of Gross Proceeds in Offering and Concurrent Private Placement to Advance GLP-1 Clinical Pipeline

Exhibit 99.1 Allurion to Raise Approximately $6.1 Million of Gross Proceeds in Offering and Concurrent Private Placement to Advance GLP-1 Clinical Pipeline NATICK, Mass., February 19, 2025—(BUSINESS WIRE)—Allurion Technologies, Inc. (“Allurion” or the “Company”) (NYSE: ALUR), a company dedicated to ending obesity, today announced that it has entered into a definitive securities purchase agreement

February 21, 2025 EX-4.2

Form of Private Placement Warrant (February 2025).

Exhibit 4.2 NEITHER THIS SECURITY NOR THE SECURITIES FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTR

February 21, 2025 EX-10.1

Form of Securities Purchase Agreement.

Exhibit 10.1 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of February 19, 2025, between Allurion Technologies, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively the “Purchasers”). WHEREAS, subject to the terms and con

February 21, 2025 EX-10.2

Subscription Agreement, dated as of February 19, 2025, between Allurion Technologies, Inc. and the investors named therein.

Exhibit 10.2 SUBSCRIPTION AGREEMENT (this “Agreement”), dated as of February 19, 2025, is made by and among Allurion Technologies, Inc., a Delaware corporation (the “Company”) and the Investor set forth on Schedule I (“Investor”). WHEREAS, the Company desires to sell, and Investor desires to purchase from the Company, shares of its common stock, par value $0.0001 per share (the “Common Stock”) and

February 21, 2025 EX-4.1

Form of Common Warrant (February 2025).

Exhibit 4.1 NEITHER THIS SECURITY NOR THE SECURITIES FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTR

February 21, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 20 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 20 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which form

February 21, 2025 EX-99.2

Allurion Announces Closing of Offering and Concurrent Private Placement to Advance GLP-1 Clinical Pipeline

Exhibit 99.2 Allurion Announces Closing of Offering and Concurrent Private Placement to Advance GLP-1 Clinical Pipeline NATICK, Mass. – Feb. 20, 2025 – Allurion Technologies, Inc. (“Allurion” or the “Company”) (NYSE: ALUR), a company dedicated to ending obesity, today announced that it has closed its previously announced registered direct offering with institutional investors for the purchase and

February 21, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 11 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 11 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Prospectus”) which forms pa

February 20, 2025 424B5

ALLURION TECHNOLOGIES, INC. 900,000 Shares of Common Stock

Table of Contents Filed pursuant to Rule 424(b)(5) Registration No. 333-283721 PROSPECTUS SUPPLEMENT (To Prospectus dated December 20, 2024) ALLURION TECHNOLOGIES, INC. 900,000 Shares of Common Stock We are offering 900,000 shares of our common stock to certain accredited investors, at an offering price of $5.23 per share and accompanying common warrant (as defined below). In a concurrent private

February 14, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 19 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 19 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which form

February 14, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 10 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 10 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Prospectus”) which forms pa

February 13, 2025 EX-99.1

Allurion Relaunches in France

Exhibit 99.1 Allurion Relaunches in France ANSM, the French regulatory authority, clears Allurion to resume sales of the Allurion Balloon Company considering sites in France for clinical trial on combination therapy of Allurion Balloon and GLP-1s to prevent muscle loss February 13, 2025 08:30 AM Eastern Standard Time NATICK, Mass.—(BUSINESS WIRE)—Allurion Technologies, Inc. (“Allurion” or the “Com

February 13, 2025 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 13, 2025 ALLURION TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-41767 92-2182207 (State or other jurisdiction of incorporation) (Comm

January 28, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 9 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 9 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Prospectus”) which forms part

January 28, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 24, 2025 ALLURION TECHNOL

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 24, 2025 ALLURION TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-41767 92-2182207 (State or other jurisdiction of incorporation) (Commi

January 28, 2025 EX-10.1

Securities Purchase Agreement, dated as of January 24, 2025, by and between Allurion Technologies, Inc. and the purchasers named therein.

EX-10.1 Exhibit 10.1 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of January 24, 2025, between Allurion Technologies, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively the “Purchasers”). WHEREAS, subject to the terms

January 28, 2025 EX-1.1

Placement Agency Agreement, dated as of January 24, 2025, by and between Allurion Technologies, Inc. and Roth Capital Partners, LLC.

Exhibit 1.1 PLACEMENT AGENCY AGREEMENT January 24, 2025 Roth Capital Partners, LLC 888 San Clemente Drive, Suite 400 Newport Beach, CA 92660 Ladies and Gentlemen: Introduction. Subject to the terms and conditions herein (this “Agreement”), Allurion Technologies, Inc., a Delaware corporation (the “Company”), hereby agrees to sell up to an aggregate of $7,440,000 of securities of the Company, includ

January 28, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 18 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 18 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which form

January 28, 2025 EX-99.1

Allurion to Raise Approximately $7.4 Million of Gross Proceeds in Offering Priced At-the-Market

EX-99.1 Exhibit 99.1 Allurion to Raise Approximately $7.4 Million of Gross Proceeds in Offering Priced At-the-Market NATICK, Mass. – Jan. 24, 2025 – Allurion Technologies, Inc. (“Allurion” or the “Company”) (NYSE: ALUR), a company dedicated to ending obesity, today announced that it has entered into a definitive securities purchase agreement with certain institutional investors for the purchase an

January 28, 2025 EX-4.1

Form of Common Warrant (January 2025).

EX-4.1 Exhibit 4.1 NEITHER THIS SECURITY NOR THE SECURITIES FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE

January 27, 2025 424B5

ALLURION TECHNOLOGIES, INC. 1,240,000 Shares of Common Stock

Table of Contents Filed pursuant to Rule 424(b)(5) Registration No. 333-283721 PROSPECTUS SUPPLEMENT (To Prospectus dated December 20, 2024) ALLURION TECHNOLOGIES, INC. 1,240,000 Shares of Common Stock We are offering 1,240,000 shares of our common stock to certain accredited investors, at an offering price of $6.00 per share and accompanying common warrant (as defined below). In a concurrent priv

January 17, 2025 EX-99.1

Allurion Announces Private Placement of Common Stock and Preliminary Unaudited Financial Results for the Fourth Quarter and Fiscal Year 2024

Exhibit 99.1 Allurion Announces Private Placement of Common Stock and Preliminary Unaudited Financial Results for the Fourth Quarter and Fiscal Year 2024 NATICK, Mass. – Jan. 14, 2025 – Allurion Technologies, Inc. (“Allurion” or the “Company”) (NYSE: ALUR), a company dedicated to ending obesity, today announced that it has entered into a subscription agreement with funds affiliated with RTW Invest

January 17, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 17 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 17 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which form

January 17, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 14, 2025 ALLURION TECHNOL

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 14, 2025 ALLURION TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-41767 92-2182207 (State or other jurisdiction of incorporation) (Commi

January 17, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 8 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 8 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Prospectus”) which forms part

January 17, 2025 EX-10.1

Subscription Agreement, dated as of January 14, 2025, between Allurion Technologies, Inc. and the investors named therein.

Exhibit 10.1 SUBSCRIPTION AGREEMENT (this “Agreement”), dated as of January 14, 2025, is made by and among Allurion Technologies, Inc., a Delaware corporation (the “Company”) and the Investors set forth on Schedule I (the “Investors”). WHEREAS, the Company desires to sell and the Investors desire to purchase from the Company shares of its common stock, par value $0.0001 per share (the “Common Stoc

January 14, 2025 RW

Allurion Technologies, Inc. 11 Huron Drive Natick, MA 01760

Allurion Technologies, Inc. 11 Huron Drive Natick, MA 01760 January 14, 2025 Via EDGAR Transmission Securities and Exchange Commission Division of Corporation Finance Office of Life Sciences 100 F Street N.E. Washington, D.C. 20549 Re: Allurion Technologies, Inc.—Request for Withdrawal of Registration Statement on Form S-1 (File No. 333-283701) Ladies and Gentlemen: Pursuant to Rule 477 promulgate

January 13, 2025 EX-4.5

Form of Series A Common Warrant.

Exhibit 4.5 SERIES A COMMON STOCK PURCHASE WARRANT ALLURION TECHNOLOGIES, INC. Warrant Shares: [   ] Issue Date: [     ], 2025 THIS SERIES A COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, [    ] or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or after the

January 13, 2025 S-1/A

As filed with the Securities and Exchange Commission on January 13 , 2025. Registration No. 333-283701 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 2 to FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT

Table of Contents As filed with the Securities and Exchange Commission on January 13 , 2025.

January 13, 2025 EX-10.48

Form of Securities Purchase Agreement.

Exhibit 10.48 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of January  , 2025, between Allurion Technologies, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively the “Purchasers”). WHEREAS, subject to the terms and cond

January 13, 2025 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-1 (Form Type) Allurion Technologies, Inc.

January 13, 2025 EX-4.6

Form of Series B Common Warrant.

Exhibit 4.6 SERIES B COMMON STOCK PURCHASE WARRANT ALLURION TECHNOLOGIES, INC. Warrant Shares: [] Issue Date: [], 2025 THIS SERIES B COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, [] or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or after the Stockholder

January 13, 2025 EX-1.1

Form of Placement Agency Agreement.

Exhibit 1.1 PLACEMENT AGENCY AGREEMENT [     ], 2025 Roth Capital Partners, LLC 888 San Clemente Drive, Suite 400 Newport Beach, CA 92660 Ladies and Gentlemen: Introduction. Subject to the terms and conditions herein (this “Agreement”), Allurion Technologies, Inc., a Delaware corporation (the “Company”), hereby agrees to sell up to an aggregate of $[   ] of registered securities of the Company, in

January 8, 2025 EX-10.49

Omnibus Amendment, dated as of January 7, 2025, by and among Allurion Technologies, Inc., Allurion Technologies, LLC, Allurion Australia Pty Ltd, Allurion France, RTW Master Fund, Ltd., RTW Innovation Master Fund, Ltd., RTW Biotech Opportunities Operating Ltd., and RTW Investments, LP.

Exhibit 10.49 CERTAIN CONFIDENTIAL PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED AND REPLACED WITH “[***]”. SUCH IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THIS EXHIBIT BECAUSE IT (I) IS NOT MATERIAL AND (II) IS OF THE TYPE THAT THE REGISTRANT TREATS AS CONFIDENTIAL, THE DISCLOSURE OF WHICH WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY. OMNIBUS AMENDMENT This Omnibus Amendment, dated as of Ja

January 8, 2025 EX-4.6

Form of Pre-Funded Warrant.

Exhibit 4.6 PRE-FUNDED COMMON STOCK PURCHASE WARRANT ALLURION TECHNOLOGIES, INC. Warrant Shares: [   ] Initial Exercise Date: [     ], 2025 THIS PRE-FUNDED COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, [   ] or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time o

January 8, 2025 8-K

Regulation FD Disclosure, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 7, 2025 ALLURION TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-41767 92-2182207 (State or other jurisdiction of incorporation

January 8, 2025 EX-99.4

Allurion Announces Positive Topline Results From AUDACITY Trial At 48 weeks, Allurion Balloon subjects had a greater than 50% responder rate and substantially greater weight loss than Control subjects Low rate of serious adverse events supports favor

Exhibit 99.4 Allurion Announces Positive Topline Results From AUDACITY Trial At 48 weeks, Allurion Balloon subjects had a greater than 50% responder rate and substantially greater weight loss than Control subjects Low rate of serious adverse events supports favorable safety profile of the Allurion Balloon Fourth and final module of PMA submission including AUDACITY trial data planned for 2025 NATI

January 8, 2025 EX-4.5

Form of Warrant.

Exhibit 4.5 COMMON STOCK PURCHASE WARRANT ALLURION TECHNOLOGIES, INC. Warrant Shares: [] Initial Exercise Date: [], 2025 THIS COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, [] or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or after the date hereof (the “

January 8, 2025 EX-99.2

INDEX TO FINANCIAL STATEMENTS ALLURION TECHNOLOGIES, INC. AND SUBSIDIARIES Page Interim Unaudited Financial Statements as of September 30, 2024 Unaudited Condensed Consolidated Balance Sheets F-2 Unaudited Condensed Consolidated Statements of Operati

Exhibit 99.2 INDEX TO FINANCIAL STATEMENTS ALLURION TECHNOLOGIES, INC. AND SUBSIDIARIES Page Interim Unaudited Financial Statements as of September 30, 2024 Unaudited Condensed Consolidated Balance Sheets F-2 Unaudited Condensed Consolidated Statements of Operations F-3 Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) F-4 Unaudited Condensed Consolidated Statements of Sto

January 8, 2025 EX-99.1

INDEX TO FINANCIAL STATEMENTS ALLURION TECHNOLOGIES, INC. AND SUBSIDIARIES Page Audited Consolidated Financial Statements as of December 31, 2023 Report of Independent Registered Public Accounting Firm (PCAOB ID: 34) F-2 Consolidated Balance Sheets a

Exhibit 99.1 INDEX TO FINANCIAL STATEMENTS ALLURION TECHNOLOGIES, INC. AND SUBSIDIARIES Page Audited Consolidated Financial Statements as of December 31, 2023 Report of Independent Registered Public Accounting Firm (PCAOB ID: 34) F-2 Consolidated Balance Sheets as of December 31, 2023 and 2022 F-3 Consolidated Statements of Operations for the Years Ended December 31, 2023 and 2022 F-4 Consolidated

January 8, 2025 EX-10.48

Form of Securities Purchase Agreement.

Exhibit 10.48 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of January  , 2025, between Allurion Technologies, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively the “Purchasers”). WHEREAS, subject to the terms and cond

January 8, 2025 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-1 (Form Type) Allurion Technologies, Inc.

January 8, 2025 S-1/A

As filed with the Securities and Exchange Commission on January 8 , 2025. Registration No. 333-283701 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 1 to FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT

Table of Contents As filed with the Securities and Exchange Commission on January 8 , 2025.

January 8, 2025 EX-1.1

Form of Placement Agency Agreement.

Exhibit 1.1 PLACEMENT AGENCY AGREEMENT [     ], 2025 Roth Capital Partners, LLC 888 San Clemente Drive, Suite 400 Newport Beach, CA 92660 Ladies and Gentlemen: Introduction. Subject to the terms and conditions herein (this “Agreement”), Allurion Technologies, Inc., a Delaware corporation (the “Company”), hereby agrees to sell up to an aggregate of $[   ] of registered securities of the Company, in

January 8, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 7 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 7 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Prospectus”) which form

January 8, 2025 EX-99.3

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Exhibit 99.3 MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS The following discussion and analysis includes information that our management believes is relevant to an assessment and understanding of our consolidated results of operations and financial condition. The discussion and analysis should be read together with the consolidated financial statements as o

January 8, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 16 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 16 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) whic

January 7, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 15 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 15 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) whic

January 7, 2025 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 6 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 6 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Prospectus”) which form

January 6, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 30, 2024 ALLURIO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 30, 2024 ALLURION TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-41767 92-2182207 (State or other jurisdiction of incorporatio

December 31, 2024 EX-3.1

Certificate of Amendment to the Amended and Restated Certificate of Incorporation of Allurion Technologies, Inc.

EX-3.1 2 d924855dex31.htm EX-3.1 Exhibit 3.1 CERTIFICATE OF AMENDMENT TO AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF ALLURION TECHNOLOGIES, INC. ALLURION TECHNOLOGIES, INC., a corporation organized and existing under the laws of the State of Delaware (the “Corporation”), hereby certifies as follows: 1. The name of the Corporation is Allurion Technologies, Inc. The date of the filing of it

December 31, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 23, 2024 ALLURIO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 23, 2024 ALLURION TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-41767 92-2182207 (State or other jurisdiction of incorporatio

December 31, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 14 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 14 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which form

December 31, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 5 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 5 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Prospectus”) which forms part

December 31, 2024 EX-99.1

Allurion Technologies, Inc. Announces Reverse Stock Split

Exhibit 99.1 Allurion Technologies, Inc. Announces Reverse Stock Split NATICK, Mass., December 24, 2024 (GLOBE NEWSWIRE) – Allurion Technologies, Inc. (NYSE: ALUR) (“Allurion” or the “Company”), a company dedicated to ending obesity, today announced that its Board of Directors has determined to effect a one-for-twenty five reverse stock split of the Company’s common stock, par value $0.0001 per sh

December 20, 2024 POS AM

As filed with the Securities and Exchange Commission on December 20, 2024

Table of Contents As filed with the Securities and Exchange Commission on December 20, 2024 Registration No.

December 19, 2024 CORRESP

VIA EDGAR

VIA EDGAR December 19, 2024 Securities and Exchange Commission Division of Corporation Finance Office of Life Sciences 100 F Street, N.

December 19, 2024 EX-FILING FEES

Filing Fee Table.

EX-FILING FEES Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Allurion Technologies, Inc.

December 19, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-276131 Prospectus Supplement No. 12 (To Prospectus dated December 29, 2023) ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock This prospectus supplement no. 12 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 29, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms

December 19, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 13 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 13 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which form

December 19, 2024 S-3/A

As filed with the Securities and Exchange Commission on December 19, 2024

S-3/A As filed with the Securities and Exchange Commission on December 19, 2024 Registration No.

December 19, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 4 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 4 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Prospectus”) which forms part

December 18, 2024 8-K

Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 16, 2024 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Comm

December 10, 2024 EX-FILING FEES

Filing Fee Table.

EX-FILING FEES Exhibit 107 Calculation of Filing Fee Tables Form S-1 (Form Type) Allurion Technologies, Inc.

December 10, 2024 EX-4.9

Form of indenture for subordinated debt securities and the related form of subordinated debt security.

EX-4.9 Exhibit 4.9 ALLURION TECHNOLOGIES, INC., Issuer AND [TRUSTEE], Trustee INDENTURE Dated as of [•], 202[•] Subordinated Debt Securities TABLE OF CONTENTS1 Page ARTICLE 1 DEFINITIONS 1 Section 1.01 Definitions of Terms 1 ARTICLE 2 ISSUE, DESCRIPTION, TERMS, EXECUTION, REGISTRATION AND EXCHANGE OF SECURITIES 4 Section 2.01 Designation and Terms of Securities 4 Section 2.02 Form of Securities an

December 10, 2024 S-3

As filed with the Securities and Exchange Commission on December 10, 2024

Table of Contents As filed with the Securities and Exchange Commission on December 10, 2024 Registration No.

December 10, 2024 EX-4.8

Form of indenture for senior debt securities and the related form of senior debt security.

EX-4.8 Exhibit 4.8 ALLURION TECHNOLOGIES, INC., Issuer AND [TRUSTEE], Trustee INDENTURE Dated as of [•], 202[•] Senior Debt Securities TABLE OF CONTENTS1 Page ARTICLE 1 DEFINITIONS 1 Section 1.01 Definitions of Terms 1 ARTICLE 2 ISSUE, DESCRIPTION, TERMS, EXECUTION, REGISTRATION AND EXCHANGE OF SECURITIES 4 Section 2.01 Designation and Terms of Securities 4 Section 2.02 Form of Securities and Trus

December 10, 2024 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Allurion Technologies, Inc.

December 10, 2024 S-1

Power of Attorney (included on signature page to this Registration Statement).

As filed with the Securities and Exchange Commission on December 9, 2024. Registration No. 333-    UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ALLURION TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 3841 92-2182207 (State or other jurisdiction of incorporation or organiz

November 14, 2024 SC 13G/A

ALUR / Allurion Technologies Inc. / ARMISTICE CAPITAL, LLC Passive Investment

SC 13G/A 1 armistice-alur093024a1.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 1)* Allurion Technologies, Inc. (Name of Issuer) Common Stock, par value, $0.0001 per share (Title of Class of Securities) 02008G102 (CUSIP Number) September 30, 2024 (Date of Event Which Requires Filing of this Statemen

November 14, 2024 SC 13G/A

ALUR / Allurion Technologies Inc. / CITADEL ADVISORS LLC - SC 13G/A Passive Investment

SC 13G/A 1 tm2427061d2sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G* (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13d-2 (Amendment No. 2)* Allurion Technologies, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (the “Shar

November 14, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 3 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 3 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Prospectus”

November 14, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 12 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 12 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prosp

November 14, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-276131 Prospectus Supplement No. 11 (To Prospectus dated December 29, 2023) ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock This prospectus supplement no. 11 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 29, 2023 (as supplemented or amended from time to time, the “Prospe

November 13, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 13, 2024 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Comm

November 13, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-41767 Allurion Technologies, Inc.

November 13, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 07, 2024 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Comm

November 13, 2024 EX-99.1

Allurion Reports Third Quarter 2024 Financial Results and Provides Business Update

Exhibit 99.1 Allurion Reports Third Quarter 2024 Financial Results and Provides Business Update NATICK, Mass.- November 13, 2024 - (BUSINESS WIRE) - Allurion Technologies, Inc. (NYSE: ALUR) (“Allurion” or the “Company”), a company dedicated to ending obesity, today announced its financial results for the third quarter ended September 30, 2024 and provided a business update. Recent Company Highligh

November 8, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defin

November 5, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 11 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 11 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which form

November 5, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 2 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 2 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, the “Prospectus”) which forms part

November 5, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-276131 Prospectus Supplement No. 10 (To Prospectus dated December 29, 2023) ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock This prospectus supplement no. 10 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 29, 2023 (as supplemented or amended from time to time, the “Prospectus”) which

November 4, 2024 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 30, 2024 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commi

November 4, 2024 EX-10.1

Revenue Interest Financing Agreement, dated as of October 30, 2024, by and among Allurion Technologies, LLC, RTW Master Fund Ltd., RTW Innovation Master Fund, Ltd. and RTW Biotech Opportunities Operating Ltd. (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed with the SEC on November 4, 2024).

Execution Version Exhibit 10.1 REVENUE INTEREST FINANCING AGREEMENT among ALLURION TECHNOLOGIES, LLC and RTW MASTER FUND, LTD., RTW INNOVATION MASTER FUND, LTD., and RTW BIOTECH OPPORTUNITIES OPERATING LTD Dated as of October 30, 2024 TABLE OF CONTENTS Page ARTICLE I DEFINED TERMS AND RULES OF CONSTRUCTION 1 Section 1.1 Defined Terms 1 Section 1.2 Rules of Construction 34 ARTICLE II REVENUE INTERE

October 29, 2024 424B3

ALLURION TECHNOLOGIES, INC. 14,406,508 Shares of Common Stock Warrants to Purchase up to 14,406,508 Shares of Common Stock

424B3 1 d872151d424b3.htm 424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-280466 Prospectus Supplement No. 5 (To Prospectus dated June 28, 2024) ALLURION TECHNOLOGIES, INC. 14,406,508 Shares of Common Stock Warrants to Purchase up to 14,406,508 Shares of Common Stock This prospectus supplement no. 5 (this “Prospectus Supplement”) amends and supplements the prospectus dated June 28, 202

October 29, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-276131 Prospectus Supplement No. 9 (To Prospectus dated December 29, 2023) ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock This prospectus supplement no. 9 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 29, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms p

October 29, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 10 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 10 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which form

October 29, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

424B3 1 d872151d424b3.htm 424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-279902 Prospectus Supplement No. 1 (To Prospectus dated October 7, 2024) ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus supplement no. 1 (this “Prospectus Supplement”) amends and supplements the prospectus dated October 7, 2024 (as supplemented or amended from time to time, th

October 28, 2024 8-K

Shareholder Director Nominations

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 26, 2024 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commi

October 28, 2024 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

October 24, 2024 SC 13D/A

ALUR / Allurion Technologies Inc. / RTW INVESTMENTS, LP - ALLURION TECHNOLOGIES INC. Activist Investment

SC 13D/A 1 p24-3055sc13da.htm ALLURION TECHNOLOGIES INC. UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A (Amendment No. 3) Under the Securities Exchange Act of 1934 ALLURION TECHNOLOGIES, INC. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 02008G102 (CUSIP Number) RTW Investments, LP Attn: Roderick Wong, M.D. 40 10th

October 7, 2024 424B5

ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock

Table of Contents Filed pursuant to Rule 424(b)(5) Registration No. 333-279902 PROSPECTUS ALLURION TECHNOLOGIES, INC. Up to 65,211,325 Shares of Common Stock This prospectus relates to the potential offer and sale from time to time by the selling securityholder identified in this prospectus of up to an aggregate of 65,211,325 shares of common stock, par value $0.0001 per share (“common stock”), of

October 3, 2024 S-1/A

As filed with the Securities and Exchange Commission on October 3, 2024 Registration No. 333-279902 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 2 to FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF

As filed with the Securities and Exchange Commission on October 3, 2024 Registration No.

October 3, 2024 CORRESP

VIA EDGAR

VIA EDGAR October 3, 2024 Securities and Exchange Commission Division of Corporation Finance Office of Life Sciences 100 F Street, N.

September 30, 2024 S-1/A

As filed with the Securities and Exchange Commission on September 30, 2024 Registration No. 333-279902 UNITED STATE S SECURITIES AND EXCHANGE COMMISSIO N Washington, D.C. 20549 Amendment No. 1 to FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES A

Table of Contents As filed with the Securities and Exchange Commission on September 30, 2024 Registration No.

September 30, 2024 EX-FILING FEES

Filing Fee Table.

EXHIBIT 107 Form S-1 (Form Type) Allurion Technologies, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security  Type  Security Class Title Fee Calculation or Carry Forward Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price(1) Fee Rate Amount of Registration Fee Newly Registered Sec

September 6, 2024 424B3

ALLURION TECHNOLOGIES, INC. 14,406,508 Shares of Common Stock Warrants to Purchase up to 14,406,508 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-280466 Prospectus Supplement No. 4 (To Prospectus dated June 28, 2024) ALLURION TECHNOLOGIES, INC. 14,406,508 Shares of Common Stock Warrants to Purchase up to 14,406,508 Shares of Common Stock This prospectus supplement no. 4 (this “Prospectus Supplement”) amends and supplements the prospectus dated June 28, 2024 (as supplemented or amended fr

September 6, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 9 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 9 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms

September 6, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-276131 Prospectus Supplement No. 8 (To Prospectus dated December 29, 2023) ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock This prospectus supplement no. 8 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 29, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms p

September 5, 2024 8-K

Regulation FD Disclosure, Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 29, 2024 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commis

September 5, 2024 EX-99.1

Allurion Receives Continued Listing Standards Notice from NYSE

Exhibit 99.1 Allurion Receives Continued Listing Standards Notice from NYSE September 5, 2024 NATICK, Mass.-(BUSINESS WIRE)- Allurion Technologies, Inc. (NYSE: ALUR) (“Allurion” or the “Company”), a company dedicated to ending obesity, today announced that it received written notice (the “Notice”) from the New York Stock Exchange (the “NYSE”) that it is not in compliance with the NYSE’s continued

September 4, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 02, 2024 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Com

September 4, 2024 EX-99.1

Allurion Announces the Appointment of Eli Lilly Veteran, Keith Johns, to Its Board of Directors Mr. Johns has worked over two decades bringing leading GLP-1 weight loss drugs and other metabolic drugs to market

Exhibit 99.1 Allurion Announces the Appointment of Eli Lilly Veteran, Keith Johns, to Its Board of Directors Mr. Johns has worked over two decades bringing leading GLP-1 weight loss drugs and other metabolic drugs to market NATICK, Mass. – Sep. 3, 2024 – Allurion Technologies, Inc. (NYSE: ALUR), a company dedicated to ending obesity, today announced the appointment of Keith Johns to its Board of D

August 16, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 8 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 8 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms

August 16, 2024 424B3

ALLURION TECHNOLOGIES, INC. 14,406,508 Shares of Common Stock Warrants to Purchase up to 14,406,508 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-280466 Prospectus Supplement No. 3 (To Prospectus dated June 28, 2024) ALLURION TECHNOLOGIES, INC. 14,406,508 Shares of Common Stock Warrants to Purchase up to 14,406,508 Shares of Common Stock This prospectus supplement no. 3 (this “Prospectus Supplement”) amends and supplements the prospectus dated June 28, 2024 (as supplemented or amended fr

August 16, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-276131 Prospectus Supplement No. 7 (To Prospectus dated December 29, 2023) ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock This prospectus supplement no. 7 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 29, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms p

August 15, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 7 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 7 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospec

August 15, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-276131 Prospectus Supplement No. 6 (To Prospectus dated December 29, 2023) ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock This prospectus supplement no. 6 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 29, 2023 (as supplemented or amended from time to time, the “Prospect

August 15, 2024 8-K

Regulation FD Disclosure, Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 12, 2024 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commis

August 15, 2024 EX-99.1

Allurion Receives Continued Listing Standards Notice from NYSE

Exhibit 99.1 Allurion Receives Continued Listing Standards Notice from NYSE August 15, 2024 NATICK, Mass.-(BUSINESS WIRE)- Allurion Technologies, Inc. (NYSE: ALUR) (“Allurion” or the “Company”), a company dedicated to ending obesity, today announced that it received written notice (the “Notice”) from the New York Stock Exchange (the “NYSE”) that it is not in compliance with the NYSE’s continued li

August 15, 2024 424B3

ALLURION TECHNOLOGIES, INC. 14,406,508 Shares of Common Stock Warrants to Purchase up to 14,406,508 Shares of Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-280466 Prospectus Supplement No. 2 (To Prospectus dated June 28, 2024) ALLURION TECHNOLOGIES, INC. 14,406,508 Shares of Common Stock Warrants to Purchase up to 14,406,508 Shares of Common Stock This prospectus supplement no. 2 (this “Prospectus Supplement”) amends and supplements the prospectus dated June 28, 2024 (as suppleme

August 14, 2024 EX-10.6

Eighth Amendment to 14 Huron Lease, dates as of April 3, 2024, by and between Allurion Technologies, Inc. and Fourteen Huron Drive, LLC (incorporated by reference to Exhibit 10.6 to the Registrant’s Quarterly Report on Form 10-Q filed with the SEC on August 14, 2024).

Exhibit 10.6 EIGHTH AMENDMENT TO LEASE THIS EIGHTH AMENDMENT TO LEASE (the "8th Amendment") is made and entered into as of April 3, 2024 (the "Execution Date"), by and between FOURTEEN HURON DRIVE, LLC, a Massachusetts limited liability company ("Landlord''), and ALLURION TECHNOLOGIES, INC., a Delaware corporation ("Tenant"). RECITALS A. Landlord and Tenant arc parties to that certain lease dated

August 14, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-41767 Allurion Technologies, Inc.

August 14, 2024 EX-10.7

Offer Letter dated May 17, 2024 with Ojas Buch (incorporated by reference to Exhibit 10.7 to the Registrant’s Quarterly Report on Form 10-Q filed with the SEC on August 14, 2024).

Exhibit 10.7 17 May 2024 Mr. Ojas Buch [***] Re: Conditional Offer of Employment with Allurion Technologies, Inc. Dear Ojas, It is with great pleasure that we offer you the position of Chief Operating Officer with Allurion Technologies, Inc. (the “Company”). You will be reporting to Shantanu Gaur, CEO & Founder, and your anticipated start date is Monday, 3 June 2024. You will work in our Natick, M

August 13, 2024 EX-99.1

Allurion Reports Second Quarter 2024 Financial Results and Provides Business Update Results highlighted by strong sequential revenue growth and record procedure volume

Exhibit 99.1 Allurion Reports Second Quarter 2024 Financial Results and Provides Business Update Results highlighted by strong sequential revenue growth and record procedure volume NATICK, Mass.- August 13, 2024 - (BUSINESS WIRE) - Allurion Technologies, Inc. (NYSE: ALUR) (“Allurion” or the “Company”), a company dedicated to ending obesity, today announced its financial results for the second quar

August 13, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 13, 2024 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commis

August 9, 2024 SC 13G

ALUR / Allurion Technologies Inc. / ARMISTICE CAPITAL, LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.

August 8, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 6 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 6 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms

August 8, 2024 424B3

ALLURION TECHNOLOGIES, INC. 14,406,508 Shares of Common Stock Warrants to Purchase up to 14,406,508 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-280466 Prospectus Supplement No. 1 (To Prospectus dated June 28, 2024) ALLURION TECHNOLOGIES, INC. 14,406,508 Shares of Common Stock Warrants to Purchase up to 14,406,508 Shares of Common Stock This prospectus supplement no. 1 (this “Prospectus Supplement”) amends and supplements the prospectus dated June 28, 2024 (as supplemented or amended fr

August 8, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-276131 Prospectus Supplement No. 5 (To Prospectus dated December 29, 2023) ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock This prospectus supplement no. 5 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 29, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms p

August 7, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 06, 2024 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commis

July 5, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 5 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 5 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms

July 5, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-276131 Prospectus Supplement No. 4 (To Prospectus dated December 29, 2023) ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock This prospectus supplement no. 4 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 29, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms p

July 5, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 5, 2024 ALLURION TECHNOLOGIE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 5, 2024 ALLURION TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-41767 92-2182207 (State or other jurisdiction of incorporation) (Commissio

July 2, 2024 SC 13D/A

ALUR / Allurion Technologies Inc. / RTW INVESTMENTS, LP - ALLURION TECHNOLOGIES INC. Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A (Amendment No. 2) Under the Securities Exchange Act of 1934 ALLURION TECHNOLOGIES, INC. (formerly known as Allurion Technologies Holdings, Inc.) (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 02008G102 (CUSIP Number) RTW Investments, LP Attn: Roderick Wong, M.D. 40 10th

July 1, 2024 EX-10.1

Subscription Agreement, dated as of June 28 2024, between Allurion Technologies, Inc. and the investors named therein (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed with the SEC on July 1, 2024).

Exhibit 10.1 EXECUTION VERSION SUBSCRIPTION AGREEMENT (this “Agreement”), dated as of June 28, 2024, is made by and among Allurion Technologies, Inc., a Delaware corporation (the “Company”) and the Investors set forth on Schedule I (the “Investors”). WHEREAS, concurrently with this Agreement, the Company is entering into an Underwriting Agreement (as amended or modified from time to time, the “Und

July 1, 2024 EX-99.1

Allurion Announces Pricing of $20 Million Public Offering and Concurrent Private Placement June 28, 2024

Exhibit 99.1 Allurion Announces Pricing of $20 Million Public Offering and Concurrent Private Placement June 28, 2024 NATICK, Mass., June 28, 2024 (BUSINESS WIRE) – Allurion Technologies, Inc. (NYSE: ALUR) (“Allurion” or the “Company”), a company dedicated to ending obesity, today announced the pricing of an underwritten public offering of 14,406,508 shares of its common stock, par value $0.0001 p

July 1, 2024 EX-4.1

Form of Public Warrant (incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report on Form 8-K filed with the SEC on July 1, 2024).

Exhibit 4.1 COMMON STOCK PURCHASE WARRANT ALLURION TECHNOLOGIES, INC. Warrant Shares: Initial Exercise Date: , 20 Issue Date: July 1, 2024 THIS COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, to subscribe for and purchase f

July 1, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-276131 Prospectus Supplement No. 3 (To Prospectus dated December 29, 2023) ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock This prospectus supplement no. 3 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 29, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms p

July 1, 2024 EX-3.1

Certificate of Designations of Preferences Rights and Limitations of Series A Non-Voting Convertible Preferred Stock (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K filed with the SEC on July 1, 2024).

Exhibit 3.1 ALLURION TECHNOLOGIES, INC. CERTIFICATE OF DESIGNATIONS OF PREFERENCES, RIGHTS AND LIMITATIONS OF SERIES A NON-VOTING CONVERTIBLE PREFERRED STOCK Pursuant to Section 151 of the General Corporation Law of the State of Delaware THE UNDERSIGNED DOES HEREBY CERTIFY, on behalf of Allurion Technologies, Inc., a Delaware corporation (the “Corporation”), that the following resolution was duly

July 1, 2024 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 28, 2024 ALLURION TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-41767 92-2182207 (State or other jurisdiction of incorporation) (Commissi

July 1, 2024 EX-4.2

Form of Private Placement Warrant.

Exhibit 4.2 COMMON STOCK PURCHASE WARRANT ALLURION TECHNOLOGIES, INC. Warrant Shares: Initial Exercise Date: , 20 Issue Date: July 1, 2024 THIS COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, to subscribe for and purchase f

July 1, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 4 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,548,268 Shares of Common Stock This prospectus supplement no. 4 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms

July 1, 2024 EX-1.1

Underwriting Agreement, dated as of June 28, 2024, among Allurion Technologies, Inc., Jefferies LLC and TD Securities (USA) LLC, as representatives of the underwriters named therein.

Exhibit 1.1 Execution Version ALLURION TECHNOLOGIES, INC. UNDERWRITING AGREEMENT June 28, 2024 JEFFERIES LLC TD SECURITIES (USA) LLC As Representatives of the several Underwriters c/o JEFFERIES LLC 520 Madison Avenue New York, New York 10022 c/o TD SECURITIES (USA) LLC 1 Vanderbilt Avenue New York, New York 10017 Ladies and Gentlemen: Introductory. Allurion Technologies, Inc., a Delaware corporati

June 28, 2024 424B4

ALLURION TECHNOLOGIES, INC. 14,406,508 Shares of Common Stock Warrants to Purchase up to 14,406,508 Shares of Common Stock

Table of Contents Filed pursuant to Rule 424(b)(4) Registration No. 333-280466 PROSPECTUS ALLURION TECHNOLOGIES, INC. 14,406,508 Shares of Common Stock Warrants to Purchase up to 14,406,508 Shares of Common Stock We are offering 14,406,508 of shares of our common stock and new warrants to purchase up to an aggregate of 14,406,508 shares of our common stock. This prospectus also relates to the offe

June 26, 2024 S-1

As filed with the Securities and Exchange Commission on June 25, 2024. Registration No. 333-      UN ITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ALLURION TECHN

As filed with the Securities and Exchange Commission on June 25, 2024. Registration No. 333-      UN ITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ALLURION TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 3841 92-2182207 (State or other jurisdiction of incorporation or organiz

June 26, 2024 EX-4.5

Form of Warrant Agreement.

Exhibit 4.5 WARRANT AGREEMENT THIS WARRANT AGREEMENT (this “Agreement”), dated as of , 2024, is entered into by and between Allurion Technologies, Inc. a Delaware corporation (the “Company”), and Continental Stock Transfer & Trust Company, a New York corporation, as Warrant Agent. Section 1. Definitions. In addition to the terms defined elsewhere in this Warrant Agreement, the following terms have

June 26, 2024 EX-99.1

1 Disclaimer This presentation, the information contained herein and the materials accompanying it (together, this “presentation”) contains confidential, material and non-public information regarding Allurion Technologies, Inc. (the “Company” or “us”

Exhibit 99.1 Investor Presentation 1 Disclaimer This presentation, the information contained herein and the materials accompanying it (together, this “presentation”) contains confidential, material and non-public information regarding Allurion Technologies, Inc. (the “Company” or “us”) and is provided to the recipients (“you”) of this presentation on the condition that you agree to hold it in stri

June 26, 2024 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-1 (Form Type) Allurion Technologies, Inc.

June 26, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 25, 2024 Allurion Technologi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 25, 2024 Allurion Technologies, Inc. (Exact Name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State of Incorporation or Organization) (Commission Fil

June 26, 2024 EX-1.1

Form of Underwriting Agreement.

Exhibit 1.1 ALLURION TECHNOLOGIES, INC. UNDERWRITING AGREEMENT [Date] JEFFERIES LLC TD SECURITIES (USA) LLC As Representatives of the several Underwriters c/o JEFFERIES LLC 520 Madison Avenue New York, New York 10022 c/o TD SECURITIES (USA) LLC 1 Vanderbilt Avenue New York, New York 10017 Ladies and Gentlemen: Introductory. Allurion Technologies, Inc., a Delaware corporation (the “Company”), propo

June 26, 2024 EX-4.6

Form of Warrant.

Exhibit 4.6 [Form of Warrant Certificate] [FACE] Number Warrants THIS WARRANT SHALL BE VOID IF NOT EXERCISED PRIOR TO THE EXPIRATION OF THE EXERCISE PERIOD PROVIDED FOR IN THE WARRANT AGREEMENT DESCRIBED BELOW ALLURION TECHNOLOGIES, INC. Incorporated Under the Laws of the State of Delaware CUSIP [ ] Warrant Certificate This Warrant Certificate certifies that, or registered assigns, is the register

June 25, 2024 CORRESP

[signature page follows]

June 26, 2024 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance Office of Life Sciences 100 F Street, N.

June 25, 2024 CORRESP

VIA EDGAR

VIA EDGAR June 26, 2024 Securities and Exchange Commission Division of Corporation Finance Office of Life Sciences 100 F Street, N.

June 21, 2024 POS AM

As filed with the Securities and Exchange Commission on June 21, 2024 Registration No. 333-276131 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Post-Effective Amendment No. 1 to FORM S-1 REGISTRATION STATEMENT UNDER THE SECU

Table of Contents As filed with the Securities and Exchange Commission on June 21, 2024 Registration No.

June 21, 2024 POS AM

As filed with the Securities and Exchange Commission on June 2 1 , 2024 Registration No. 333-274564 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Post-Effective Amendment No. 1 to FORM S-1 REGISTRATION STATEMENT UNDER THE SE

Table of Contents As filed with the Securities and Exchange Commission on June 2 1 , 2024 Registration No.

May 31, 2024 S-1

As filed with the Securities and Exchange Commission on Ma y 31, 2 024 Registration No. 333-   UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ALLURION TECHNOLOG

Table of Contents As filed with the Securities and Exchange Commission on Ma y 31, 2 024 Registration No.

May 31, 2024 EX-FILING FEES

Filing Fee Table.

EX-FILING FEES EXHIBIT 107 Form S-1 (Form Type) Allurion Technologies, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price(1) Fee Rate Amount of Registration Fee Newly R

May 28, 2024 DRS

CONFIDENTIAL TREATMENT REQUESTED BY ALLURION TECHNOLOGIES, INC. PURSUANT TO 17 CFR 200.83. As confidentially submitted to the Securities and Exchange Commission on May 24, 2024. This draft registration statement has not been publicly filed with the S

Table of Contents CONFIDENTIAL TREATMENT REQUESTED BY ALLURION TECHNOLOGIES, INC. PURSUANT TO 17 CFR 200.83. As confidentially submitted to the Securities and Exchange Commission on May 24, 2024. This draft registration statement has not been publicly filed with the Securities and Exchange Commission and all information herein remains strictly confidential. Registration No. 333-      UNITED STATES

May 24, 2024 DRSLTR

Goodwin Procter LLP

Goodwin Procter LLP 100 Northern Avenue Boston, MA 02210 goodwinlaw.com +1 617 570 1000 May 24, 2024 CONFIDENTIAL SUBMISSION VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549-7561 Re: Allurion Technologies, Inc. Draft Registration Statement on Form S-1 Confidentially Submitted on May 24, 2024 CIK No. 0001964979 Ladies and Ge

May 14, 2024 EX-99.1

Allurion Reports First Quarter 2024 Financial Results and Provides Business Update

ACTIVE/129533855.2 Exhibit 99.1 Allurion Reports First Quarter 2024 Financial Results and Provides Business Update NATICK, Mass.- May 14, 2024 (BUSINESS WIRE)- Allurion Technologies, Inc. (NYSE: ALUR) (“Allurion” or the “Company”), a company dedicated to ending obesity, today announced its financial results for the first quarter ended March 31, 2024, and provided a business update. Recent Company

May 14, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-41767 Allurion Technologies, Inc.

May 14, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 14, 2024 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commissio

April 30, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 30, 2024 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commiss

April 30, 2024 EX-99.1

Allurion Announces Preliminary First Quarter 2024 Results Generated quarter-over-quarter revenue growth and continued growth in procedural volume, while substantially reducing cash burn Company to report full first quarter 2024 financial results on M

ACTIVE/129238067.2 Exhibit 99.1 Allurion Announces Preliminary First Quarter 2024 Results Generated quarter-over-quarter revenue growth and continued growth in procedural volume, while substantially reducing cash burn Company to report full first quarter 2024 financial results on May 14, 2024 NATICK, Mass. – Apr. 30, 2024 – Allurion Technologies, Inc. (“Allurion” or the “Company”) (NYSE: ALUR), a

April 29, 2024 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1) (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-4

April 17, 2024 EX-99.1

Allurion Closes $48 Million Convertible Senior Secured Note Financing with RTW Investments

Exhibit 99.1 Allurion Closes $48 Million Convertible Senior Secured Note Financing with RTW Investments • Simplifies capital structure through prepayment of existing term loan • Reduces annual interest expense, providing increased near-term cash flow and operational flexibility • Extends expected cash runway in advance of AUDACITY FDA trial read-out • Strengthens long-term partnership with RTW Inv

April 17, 2024 SC 13D/A

ALUR / Allurion Technologies Inc. / RTW INVESTMENTS, LP - ALLURION TECHNOLOGIES INC. Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A (Amendment No. 1) Under the Securities Exchange Act of 1934 ALLURION TECHNOLOGIES, INC. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 02008G102 (CUSIP Number) RTW Investments, LP Attn: Roderick Wong, M.D. 40 10th Avenue, Floor 7 New York, New York 10014 (Name, Address

April 17, 2024 EX-10.2

Omnibus Amendment, dated as of April 14, 2024, by and among Allurion Technologies, Inc., Allurion Technologies, LLC and certain entities that have engaged RTW Investments, LP as investment manager.

EXECUTION VERSION Exhibit 10.2 OMNIBUS AMENDMENT This Omnibus Amendment (this “Amendment”), dated as of April 14, 2024, is among 4010 Royalty Investments ICAV, an Irish collective asset-management vehicle, for and on behalf of its sub-fund, 4010 Royalty Investments Fund 1, and 4010 Royalty Master Fund, LP, a Cayman Islands limited partnership (each and collectively, together with its and their suc

April 17, 2024 EX-10.4

First Amendment to Note Purchase Agreement, dated as of April 16, 2024, by and among Allurion Technologies, Inc., RTW Investments, LP, as agent for the purchasers party thereto from time to time, and Acquiom Agency Services LLC, as collateral agent for the purchasers.

Execution Version Exhibit 10.4 FIRST AMENDMENT TO NOTE PURCHASE AGREEMENT This First Amendment to Note Purchase Agreement (this “Amendment”), dated as of April 16, 2024, is among Allurion Technologies, Inc., a Delaware corporation (formerly known as Allurion Technologies Holdings, Inc.) (together with its successors and permitted assigns, the “Company”), the purchasers party to the Existing Note P

April 17, 2024 EX-10.1

Note Purchase Agreement dated as of April 14, 2024, by and among Allurion Technologies, Inc., RTW Investments, LP, as agent for the purchasers party thereto from time to time, and Acquiom Agency Services LLC, as collateral agent for the purchasers (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed with the SEC on April 17, 2024).

EXECUTION VERSION Exhibit 10.1 CERTAIN CONFIDENTIAL PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED AND REPLACED WITH “[***]”. SUCH IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THIS EXHIBIT BECAUSE IT (I) IS NOT MATERIAL AND (II) IS OF THE TYPE THAT THE REGISTRANT TREATS AS CONFIDNETIAL, THE DISCLOSURE OF WHICH WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY. NOTE PURCHASE AGREEMENT This Note Purch

April 17, 2024 EX-10.3

First Amendment to Amended and Restated Letter Agreement, dated as of April 14, 2024, by ad among Allurion Technologies, Inc., Allurion Technologies, LLC, RTW Master Fund, Ltd., RTW Innovation Master Fund, Ltd. and RTW Biotech Opportunities Operating Ltd. (incorporated by reference to Exhibit 10.3 to the Registrant’s Current Report on Form 8-K filed with the SEC on April 17, 2024).

Execution Version Exhibit 10.3 FIRST AMENDMENT TO AMENDED AND RESTATED LETTER AGREEMENT This First Amendment to Amended and Restated Letter Agreement (this “Amendment”), dated as of April 14, 2024, is made by and among Allurion Technologies, Inc. (formerly known as Allurion Technologies Holdings, Inc.), a Delaware corporation (the “Company”), Allurion Technologies, LLC (formerly known as Compute H

April 17, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 14, 2024 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commiss

March 26, 2024 EX-19.1

Allurion Technologies, Inc. Insider Trading Policy. (incorporated by reference to Exhibit 19.1 to Allurion Technologies, Inc.’s Annual Report on Form 10-K filed on March 26, 2024).

Exhibit 19.1 ALLURION TECHNOLOGIES, INC. INSIDER TRADING POLICY This memorandum sets forth the policy of Allurion Technologies, Inc. and its subsidiaries (collectively, the “Company”) regarding trading in the Company’s securities as described below and the disclosure of information concerning the Company. This Insider Trading Policy (the “Insider Trading Policy”) is designed to prevent insider tra

March 26, 2024 EX-10.39

Employment Agreement between Allurion Technologies, Inc. and Brendan Gibbons (incorporated by reference to Exhibit 10.39 to the Registrant’s Annual Report on Form 10-K filed with the SEC on March 26, 2024).

Exhibit 10.39 EMPLOYMENT AGREEMENT This Employment Agreement (“Agreement”) is made between Allurion Technologies, Inc., a Delaware corporation (the “Company”), and Brendan Gibbons (the “Executive”) and is made effective as of January 29, 2024 (the “Effective Date”) WHEREAS, the Company desires to employ the Executive and the Executive desires to continue to be employed by the Company on the terms

March 26, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-41767 Allurion Techno

March 26, 2024 EX-21.1

List of subsidiaries of Allurion Technologies Holdings, Inc.

Exhibit 21.1 Subsidiaries of Allurion Technologies, Inc. Name of Subsidiary Jurisdiction of Incorporation Allurion France SAS France Allurion Middle East Medical Instrument Trading LLC United Arab Emirates Allurion Hong Kong Ltd. Hong Kong Allurion UK Ltd. United Kingdom Allurion Italy,Sri Italy Allurion Spain, Sri Spain Allurion Australia Pty Ltd. Australia Allurion Mexico S. de R.L de C.V. Mexic

March 26, 2024 EX-10.36

Settlement Agreement, dated as of December 12, 2023, by and between Allurion Technologies, Inc. and Benoit Chardon (incorporated by reference to Exhibit 10.36 to the Registrant’s Annual Report on Form 10-K filed with the SEC on March 26, 2024).

Exhibit 10.36 TRANSACTION SETTLEMENT AGREEMENT Le présent protocole est conclu entre : (1) ALLURION FRANCE, société par actions simplifiée, immatriculée auprès du Registre du Commerce et des Sociétés de Paris sous le numéro unique d’identification 828 621 383, dont le siège social est situé 6, Boulevard Montmartre – 75009 Paris, France, dûment représentée aux présentes, (2) ALLURION TECHNOLOGIES,

March 26, 2024 EX-97.1

Allurion Technologies, Inc. Compensation Recovery Policy.

Exhibit 97.1 ALLURION TECHNOLOGIES, INC. COMPENSATION RECOVERY POLICY Adopted as of July 31, 2023 Allurion Technologies, Inc., a Delaware corporation (the “Company”), has adopted a Compensation Recovery Policy (this “Policy”) as described below. 1. Overview The Policy sets forth the circumstances and procedures under which the Company shall recover Erroneously Awarded Compensation from Covered Per

March 26, 2024 EX-10.37

Termination Agreement, dated as of December 12, 2023 by and between Allurion France and Benoit Chardon Consulting (incorporated by reference to Exhibit 10.37 to the Registrant’s Annual Report on Form 10-K filed with the SEC on March 26, 2024).

Exhibit 10.37 PROTOCOLE D’ACCORD En date du 12 décembre 2023 (1) BENOIT CHARDON CONSULTING (2) MONSIEUR BENOIT CHARDON (3) ALLURION FRANCE TERMINATION AGREEMENT As of December 12, 2023 (1) BENOIT CHARDON CONSULTING (2) MR BENOIT CHARDON (3) ALLURION FRANCE Le présent protocole est conclu entre : (1) BENOIT CHARDON CONSULTING, société à responsabilité limitée, immatriculée auprès du Registre du Com

March 21, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,560,431 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 3 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,560,431 Shares of Common Stock This prospectus supplement no. 3 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms

March 21, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 21, 2024 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commiss

March 21, 2024 EX-99.1

Allurion Reports Fourth Quarter and Full Year 2023 Financial Results and Reiterates 2024 Guidance

Allurion Reports Fourth Quarter and Full Year 2023 Financial Results and Reiterates 2024 Guidance March 21, 2024 NATICK, Mass.

March 21, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-276131 Prospectus Supplement No. 2 (To Prospectus dated December 29, 2023) ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock This prospectus supplement no. 2 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 29, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms p

March 15, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 11, 2024 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commiss

March 15, 2024 EX-99.1

Milena Alberti-Perez Joins Allurion Board of Directors as Audit Committee Chair

EX-99.1 Milena Alberti-Perez Joins Allurion Board of Directors as Audit Committee Chair NATICK, MA – March 12, 2024 – Allurion Technologies, Inc. (NYSE: ALUR), a company dedicated to ending obesity, today announced the appointment of its newest board member and Audit Committee Chair, Milena Alberti-Perez, effective as of March 11, 2024. "Milena joins the Allurion board during an exciting time in t

February 14, 2024 SC 13G/A

ALUR / Allurion Technologies Inc. / CITADEL ADVISORS LLC - SC 13G/A Passive Investment

SC 13G/A 1 tm245287d13sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G* (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13d-2 (Amendment No. 1)* Allurion Technologies, Inc. (Name of Issuer) Common stock, par value $0.0001 per share (the “Shar

January 8, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 8, 2024 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Commis

January 8, 2024 EX-99.1

Allurion Announces Preliminary Fourth Quarter and Full Year 2023 Results and Provides 2024 Outlook Generated substantial procedure growth in 2023 driven by best-in-class efficacy of balloon program; prioritizing key investments in strategic markets a

Allurion Announces Preliminary Fourth Quarter and Full Year 2023 Results and Provides 2024 Outlook Generated substantial procedure growth in 2023 driven by best-in-class efficacy of balloon program; prioritizing key investments in strategic markets and digital innovations ahead of FDA milestones NATICK, Mass.

January 2, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-276131 Prospectus Supplement No. 1 (To Prospectus dated December 29, 2023) ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock This prospectus supplement no. 1 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 29, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms p

January 2, 2024 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,560,431 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 2 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,560,431 Shares of Common Stock This prospectus supplement no. 2 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms

December 29, 2023 424B3

ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-276131 PROSPECTUS ALLURION TECHNOLOGIES, INC. Up to 9,482,468 Shares of Common Stock This prospectus relates to the potential offer and sale from time to time by Chardan Capital Markets LLC (“Chardan”) of up to 9,482,468 shares of our common stock, par value $0.0001 per share (“Common Stock”), that have been or may be issued b

December 29, 2023 EX-10.1

Amendment No. 1 to Credit Agreement and Guaranty, dated as of December 29, 2023, by and among Allurion Technologies, Inc., Allurion Technologies, LLC, the Subsidiary Guarantors from time to time party thereto, the Lenders from time to time party thereto and Fortress Credit Corp., as administrative agent for the Lenders (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed with the SEC on December 29, 2023).

Exhibit 10.1 Execution Version AMENDMENT NO. 1 TO CREDIT AGREEMENT AND GUARANTY This AMENDMENT NO. 1 TO CREDIT AGREEMENT AND GUARANTY, dated as of December 29, 2023 (this “Amendment”), is by and among ALLURION TECHNOLOGIES, LLC, a Delaware limited liability company (the “Borrower”), ALLURION TECHNOLOGIES, INC., a Delaware corporation (the “Parent”), certain Subsidiaries of the Parent party hereto,

December 29, 2023 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report: (December 29, 2023) ALLURION TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-41767 92-2182207 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employe

December 27, 2023 CORRESP

Allurion Technologies, Inc. 11 Huron Drive Natick, MA 01760

Allurion Technologies, Inc. 11 Huron Drive Natick, MA 01760 December 27, 2023 VIA EDGAR Conlon Danberg Office of Industrial Applications and Services Division of Corporation Finance U.S. Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Re: Allurion Technologies, Inc. Acceleration Request for Registration Statement on Form S-1 File No. 333-276131 Requested Date: December

December 26, 2023 EX-99.1

JOINT FILING AGREEMENT

EX-99.1 2 tm2333707d1ex99-1.htm EXHIBIT 99.1 EXHIBIT 99.1 JOINT FILING AGREEMENT The undersigned hereby agree that the Statement on Schedule 13G filed herewith (and any amendments thereto), relating to the Shares of Allurion Technologies, Inc., a Delaware corporation, is being filed jointly with the Securities and Exchange Commission pursuant to Rule 13d-1(c) under the Securities Exchange Act of 1

December 26, 2023 SC 13G

ALUR / Allurion Technologies Inc. / CITADEL ADVISORS LLC - SC 13G Passive Investment

SC 13G 1 tm2333707d1sc13g.htm SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G* (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13d-2 (Amendment No. )* Allurion Technologies, Inc. (Name of Issuer) Common stock, par value $0.0001 per share (the “Shares”) (

December 19, 2023 EX-10.1

ChEF Purchase Agreement, dated as of December 18, 2023, by and between Allurion Technologies, Inc. and Chardan Capital Markets LLC (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed with the SEC on December 18, 2023).

Exhibit 10.1 ChEF PURCHASE AGREEMENT This ChEF PURCHASE AGREEMENT is made and entered into as of December 18, 2023 (together with Annex I, this “Agreement”), by and between Chardan Capital Markets LLC, a New York limited liability company (the “Investor”), and Allurion Technologies, Inc., a Delaware corporation (the “Company”). RECITALS WHEREAS, the parties desire that, upon the terms and subject

December 19, 2023 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-1 (Form Type) Allurion Technologies, Inc.

December 19, 2023 S-1

As filed with the Securities and Exchange Commission on December 19, 2023 Registration No . 333-274564 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ALLURION T

Table of Contents As filed with the Securities and Exchange Commission on December 19, 2023 Registration No .

December 19, 2023 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report: (December 18, 2023) ALLURION TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-41767 92-2182207 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employe

December 19, 2023 EX-10.2

Registration Rights Agreement dated as of December 18, 2023, by and between Allurion Technologies, Inc. and Chardan Capital Markets LLC (incorporated by reference to Exhibit 10.2 to the Registrant’s Current Report on Form 8-K filed with the SEC on December 18, 2023).

Exhibit 10.2 REGISTRATION RIGHTS AGREEMENT THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of December 18, 2023, is by and between Chardan Capital Markets LLC, a New York limited liability company (the “Investor”), Allurion Technologies, Inc., a Delaware corporation (the “Company”). RECITALS The Company and the Investor have entered into that certain Common Stock Purchase Agreement

December 15, 2023 424B3

ALLURION TECHNOLOGIES, INC. Up To 56,560,431 Shares of Common Stock

424B3 1 d432702d424b3.htm 424B3 Table of Contents Filed pursuant to Rule 424(b)(3) Registration No. 333-274564 PROSPECTUS ALLURION TECHNOLOGIES, INC. Up To 56,560,431 Shares of Common Stock This prospectus relates to the resale from time to time by the selling securityholders named in this prospectus (collectively, the “Selling Securityholders”), or their permitted transferees (after the expiratio

December 15, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Entry into a Material Definitive Agreement, Termination of a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 12, 2023 Allurion Technologies, Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-41767 92-2182207 (State or Other Jurisdiction of Incorporation) (Comm

December 15, 2023 424B3

ALLURION TECHNOLOGIES, INC. Up to 56,560,431 Shares of Common Stock

Filed Pursuant to Rule 424(b)(3) Registration No. 333-274564 Prospectus Supplement No. 1 (To Prospectus dated December 15, 2023) ALLURION TECHNOLOGIES, INC. Up to 56,560,431 Shares of Common Stock This prospectus supplement no. 1 (this “Prospectus Supplement”) amends and supplements the prospectus dated December 15, 2023 (as supplemented or amended from time to time, the “Prospectus”) which forms

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