Abivax S.A.
ABVX- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001956827
No open-market purchases or sales by Abivax S.A. insiders were filed in the last 90 days; 303 institutions reported holding it in 13F filings for Q2 2026, worth $7.18B in total; Maverick Capital is the only superinvestor holding it.
Other share classesAAVXF
Holders of 5% or more of ABVX
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Abivax S.A., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Sofinnova Crossover I | 13D/A | 9.40%8.40M shares | −2.00 ppfrom 11.40% | Feb 14, 20253 filings | Oct 30, 2025 | SEC |
| TCG Crossover GP I, LLC | 13G/A | 9.10%7.11M shares | – | Nov 14, 20251 filing | Nov 14, 2025 | SEC |
| Invus Global Management, LLC | 13G | 8.50%5.40M shares | New | Apr 11, 20251 filing | Apr 11, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
7 Schedule 13D and 13G filings on Abivax S.A., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Nov 14, 20255:29 PM ET | Venrock Healthcare Capital Partners III, L.P.and 6 others | 13G/A | 0.80%576.7K shares | –Below 5% | Sep 30, 2025 | SEC |
| Nov 14, 20254:22 PM ET | TCG Crossover GP I, LLCand 4 others | 13G/A | 9.10%7.11M shares | – | Sep 30, 2025 | SEC |
| Oct 30, 20254:08 PM ET | Sofinnova Crossover Iand 6 others | 13D/A | 9.40%8.40M shares | −2.00 ppfrom 11.40% | Oct 28, 2025 | SEC |
| Aug 14, 20258:54 AM ET | Deep Track Capital, LPand 2 others | 13G/A | 4.78%3.48M shares | –Below 5% | Jun 30, 2025 | SEC |
| Jul 31, 20254:04 PM ET | Sofinnova Crossover Iand 6 others | 13D/A | 11.40%9.60M shares | +0.40 ppfrom 11.00% | Jul 23, 2025 | SEC |
| Apr 11, 20254:43 PM ET | Invus Global Management, LLCand 4 others | 13G | 8.50%5.40M shares | New | Sep 2, 2022 | SEC |
| Feb 14, 20254:19 PM ET | Sofinnova Crossover Iand 6 others | 13D/A | 11.00%7.79M shares | – | Feb 14, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Abivax S.A. shares.
No Form 144 notices for Abivax S.A. are on file.