As of November 6, 2026, Abivax SA is a publicly traded company (Nasdaq: ABVX); its largest reported holder is Chen Yu, with 7% on Schedule 13G/A of August 14, 2026, then Invus Public Equities, L.P. (6%). No bankruptcy or receivership appears in its SEC Form 8-K filings (Schedule 13G/A, August 14, 2026).
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Is Abivax SA a real, registered company?
- Abivax SA files with the SEC under CIK 1956827 (its SEC filings).
- Its shares are listed under the ticker ABVX on Nasdaq (also AAVXF) (SEC company record).
- Incorporated in I0, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under Abivax SA in our court records and SEC 8-K records (as of 2026-11-06).
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Chen Yu (filed 2026-08-14).
Who are Abivax SA's owners and officers?
Abivax SA: industry Pharmaceutical Preparations (Schedule 13G/A, 2026-08-14).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-08-14 | Chen Yu | 7% |
| Schedule 13G/A, 2026-08-13 | Invus Public Equities, L.P. | 6% |
| Schedule 13D/A, 2026-07-06 | Sofinnova Crossover I Slp | 4.3% |
| Schedule 13D/A, 2026-05-11 | Sofinnova Crossover I Slp | 6.7% |
| Schedule 13G/A, 2026-02-13 | Invus Public Equities, L.P. | 5% |
| Schedule 13D/A, 2026-01-14 | Sofinnova Crossover I Slp | 7.7% |
| Schedule 13G/A, 2025-11-14 | Chen Yu | 9.1% |
| Schedule 13G/A, 2025-11-14 | Venrock Healthcare Capital Partners Iii, L.P. | 0.8% |
| Schedule 13D/A, 2025-10-30 | Sofinnova Crossover I Slp | 9.4% |
| Schedule 13G/A, 2025-08-14 | Deep Track Capital, LP | 4.78% |
| Schedule 13D/A, 2025-07-31 | Sofinnova Crossover I Slp | 11.4% |
Questions about who owns Abivax SA
Who owns Abivax SA?
On this page, 2 holders' latest ownership filings report 5% or more of Abivax SA: Chen Yu (7%, Schedule 13G/A, filed 2026-08-14) and Invus Public Equities, L.P. (6%, Schedule 13G/A, filed 2026-08-13).
Who are the largest shareholders of Abivax SA?
By the share each holder's latest filing reports, the largest holders of Abivax SA on this page are Chen Yu (7%) and Invus Public Equities, L.P. (6%).
When did Chen Yu buy into Abivax SA?
The filings give report dates, not purchase dates. The earliest filing from Chen Yu on this page is the Schedule 13G/A, filed 2025-11-14, reporting 9.1%; its latest, Schedule 13G/A filed 2026-08-14, reports 7%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 11 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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What They Do, And How The Money Works
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Sources
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How much has Abivax SA raised?
No fundraising or offering filing from Abivax SA is on file with us.
Keep reading
More on Abivax SA and the records around it.
Abivax SA elsewhere on the record
- 5%+ stake filings Aug 2026
Companies that share a holder
- Sofinnova Crossover I SLP also filed stake reports on 1 other company: Inventiva, S.A. (Feb 2026)
- TCG Crossover GP I, LLC also filed stake reports on 6 other companies: Entrada Therapeutics, Inc. (Aug 2026), Vistagen Therapeutics, Inc. (Aug 2026), Savara Inc. (Feb 2026)
- Invus Public Equities, L.P. also filed stake reports on 24 other companies: City Therapeutics, Inc. (Oct 2026), Yarrow Bioscience, Inc. (Sep 2026), enGene Holdings Inc. (Aug 2026)
Related pages
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