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SCHEDULE 13D/A Filed 2026-07-06 Event 2026-07-02 SEC 0001104659-26-080877 →

Sofinnova Crossover I Abivax S.A. AAVXF

Stake: 4.30% Shares: 3,535,843 CUSIP: 00370M103 Class: Ordinary Shares, par value EUR0.01 per share

Item 4 — Purpose of Transaction

Item 4 of the Schedule 13D is hereby amended and supplemented as follows: SC sold the amounts of ADS and Ordinary Shares on the date and at the prices set forth below in open market transactions on NASDAQ and Euronext. All daily sales of the shares were sold in multiple transactions at varying prices. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each weighted average price set forth in this Schedule 13D. June 30, 2026: -500,000 ADSs at a weighted average price of $132.7347 per share. July 1, 2026: -25,000 ADSs at a weighted average price of $134.2377 per share. July 2, 2026: -275,000 ADSs at a weighted average price of $140.9365 per share.* -35,469 Ordinary Shares at a weighted average price of $144.2752 per share.* July 3, 2026: -25,000 Ordinary Shares at a weighted average price of $156.2041 per share.* -39,531 Ordinary Shares at a weighted average price of $155.0654 per share.* July 6, 2026: -3,195 Ordinary Shares at a weighted average price of $155.0436 per share.* * Transaction completed in Euros. Price per share converted to USD at an exchange rate of $1.1448 as of July 3, 2026. All of the Ordinary Shares that are held of record by the Reporting Persons as reported herein were acquired for investment purposes. The Reporting Persons retain the right to change their investment intent, from time to time to acquire additional Ordinary Shares or other securities of the Issuer, or to sell or otherwise dispose of all or part of the Ordinary Shares or other securities of the Issuer, if any, beneficially owned by them, in any manner permitted by law. The Reporting Persons may engage from time to time in ordinary course transactions with financial institutions with respect to the securities described herein. Except as set forth above, none of the Reporting Persons currently has any plans or proposals which would be related to or would result in any of the matters described in Items 4(a)-(j) of the Instructions to Schedule 13D. However, as part of the ongoing evaluation of investment and investment alternatives, the Reporting Persons may consider such matters and, subject to applicable law, may formulate a plan with respect to such matters, and, from time to time, may hold discussions with or make formal proposals to management or the board of directors of the Issuer or other third parties regarding such matters.

Cross-References

Insider Activity (last 365d)
0 transactions
0 buys · 0 sales · 0 awards/exercises
Issuer Cluster
4 13D/G filings on this issuer
3 other filings besides this one
Filer Track Record
4 filings by this filer
3 other filings in the data moat
Short Interest · settle 2026-07-31
DTC 999.99
139,370 shares short · +3.2% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers
1 holder · $392.31M
Point72 Asset Mgmt

Post-Filing Returns · since 2026-07-02 on AAVXF

+1 day
0.0%
+5 days
0.0%
+30 days
+60 days
+90 days
+180 days

Anchor price 80.03 on closest trading day on/after 2026-07-02. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Other 13D/G Filings on Abivax S.A.

FiledFormFilerStakeShares
2026-05-11 SCHEDULE 13D/A Sofinnova Crossover I 5,499,478 view →
2025-07-31 SCHEDULE Sofinnova Crossover I 11.40% 9,599,478 view →
2025-02-14 SCHEDULE Sofinnova Crossover I 11.00% 7,794,478 view →

Other Filings by Sofinnova Crossover I

FiledFormIssuerStakeShares
2026-05-11 SCHEDULE 13D/A Abivax S.A. AAVXF 5,499,478 view →
2025-07-31 SCHEDULE Abivax S.A. AAVXF 11.40% 9,599,478 view →
2025-02-14 SCHEDULE Abivax S.A. AAVXF 11.00% 7,794,478 view →

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