SCHEDULE Filed 2025-11-07 Event 2025-11-05 SEC 0001493215-25-000016 →

RTW INVESTMENTS, LP → ALLURION TECHNOLOGIES, INC. ALURW

Stake: 43.60% Shares: 4,035,142 CUSIP: 02008G201 Class: Common Stock, par value $0.0001 per share

Item 4 — Purpose of Transaction

Item 4 of the Schedule 13D is hereby amended and supplemented as follows: The information set forth in Item 5(c) of this Amendment No. 9 is incorporated by reference herein to this Item 4.

Cross-References

Insider Activity (last 365d)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

6 13D/G filings on this issuer

5 other filings besides this one

Filer Track Record

17 filings by this filer

16 other filings in the data moat

Short Interest · settle 2026-03-31

DTC 1.00

26,191 shares short · -8.0% vs prior

Other 13D/G Filings on ALLURION TECHNOLOGIES, INC.

Filed	Form	Filer	Stake	Shares
2025-02-24	SCHEDULE	RTW INVESTMENTS, LP	17.60%	1,050,053	view →
2025-01-29	SCHEDULE	RTW INVESTMENTS, LP	21.90%	1,050,053	view →
2025-01-16	SCHEDULE	RTW INVESTMENTS, LP	29.60%	1,050,060	view →
2025-01-10	SCHEDULE	RTW INVESTMENTS, LP	9.99%	277,797	view →
2024-07-02	SC	RTW INVESTMENTS, LP	—	—	view →

Other Filings by RTW INVESTMENTS, LP

Filed	Form	Issuer	Stake	Shares
2025-02-24	SCHEDULE	ALLURION TECHNOLOGIES, INC. ALURW	17.60%	1,050,053	view →
2025-01-29	SCHEDULE	ALLURION TECHNOLOGIES, INC. ALURW	21.90%	1,050,053	view →
2025-01-16	SCHEDULE	ALLURION TECHNOLOGIES, INC. ALURW	29.60%	1,050,060	view →
2025-01-10	SCHEDULE	ALLURION TECHNOLOGIES, INC. ALURW	9.99%	277,797	view →
2024-07-02	SC	ALLURION TECHNOLOGIES, INC. ALURW	—	—	view →
2023-12-12	SC	DermTech, Inc.	—	—	view →
2023-04-05	SC	Renovacor, Inc.	—	—	view →
2023-04-05	SC	ROCKET PHARMACEUTICALS, INC. RCKTW	—	—	view →
2022-10-11	SC	ROCKET PHARMACEUTICALS, INC. RCKTW	—	—	view →
2022-09-21	SC	ROCKET PHARMACEUTICALS, INC. RCKTW	—	—	view →
2021-08-31	SC	ROCKET PHARMACEUTICALS, INC. RCKTW	—	—	view →
2021-03-29	SC	ROCKET PHARMACEUTICALS, INC. RCKTW	—	—	view →
2021-01-19	SC	DermTech, Inc.	—	—	view →
2021-01-08	SC	ROCKET PHARMACEUTICALS, INC. RCKTW	—	—	view →
2020-03-09	SC	DermTech, Inc.	—	—	view →
2019-04-18	SC	ROCKET PHARMACEUTICALS, INC. RCKTW	—	—	view →

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