Annexon, Inc. SEC filings ANNX
Annexon, Inc. has 522 filings in SEC EDGAR's recent list, going back to Aug 22, 2011. Its latest annual report, Form ARS, was filed on Apr 27, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 12, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Aug 12, 2026 (results of operations, other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 5, 2026 | — |
| 4 | Insider transaction | Sep 25, 2026 | Sep 24, 2026 |
| 144 | Notice of proposed sale | Aug 13, 2026 | — |
| 4 | Insider transaction | Aug 12, 2026 | Aug 10, 2026 |
| 3 | Initial insider ownership | Aug 12, 2026 | Aug 10, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 7, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 27, 2026 | — |
| 144 | Notice of proposed sale | Jul 15, 2026 | — |
| 144 | Notice of proposed sale | Jul 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 8, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 8, 2026 | — |
| 4 | Insider transaction | Jun 15, 2026 | Jun 11, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 11, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 11, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 11, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 11, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 11, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 11, 2026 |
| 4 | Insider transaction | May 29, 2026 | May 28, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| 4 | Insider transaction | May 13, 2026 | May 11, 2026 |
| 4 | Insider transaction | Apr 14, 2026 | Apr 10, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Mar 12, 2026 | Mar 10, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 144 | Notice of proposed sale | Mar 2, 2026 | — |
| 144 | Notice of proposed sale | Mar 2, 2026 | — |
| 144 | Notice of proposed sale | Mar 2, 2026 | — |
| 144 | Notice of proposed sale | Mar 2, 2026 | — |
| 144 | Notice of proposed sale | Mar 2, 2026 | — |
| 4 | Insider transaction | Feb 23, 2026 | Feb 19, 2026 |
| 4 | Insider transaction | Feb 23, 2026 | Feb 19, 2026 |
| 4 | Insider transaction | Feb 23, 2026 | Feb 19, 2026 |
| 4 | Insider transaction | Feb 23, 2026 | Feb 19, 2026 |
| 4 | Insider transaction | Feb 23, 2026 | Feb 19, 2026 |
| 4 | Insider transaction | Feb 23, 2026 | Feb 19, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 144 | Notice of proposed sale | Feb 18, 2026 | — |
| 144 | Notice of proposed sale | Feb 18, 2026 | — |
| 144 | Notice of proposed sale | Feb 18, 2026 | — |
| 144 | Notice of proposed sale | Feb 18, 2026 | — |
| 144 | Notice of proposed sale | Feb 18, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 5, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 21, 2026 | — |
| 4 | Insider transaction | Jan 2, 2026 | Dec 30, 2025 |
| 4 | Insider transaction | Dec 3, 2025 | Dec 1, 2025 |
| 4 | Insider transaction | Dec 3, 2025 | Dec 1, 2025 |
| 4 | Insider transaction | Nov 21, 2025 | Nov 20, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Nov 21, 2025 | — |
| 4 | Insider transaction | Nov 19, 2025 | Nov 17, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 5, 2025 | — |
| 4 | Insider transaction | Oct 31, 2025 | Oct 30, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 30, 2025 | — |
| 4 | Insider transaction | Oct 2, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 6, 2025 | — |
| 4 | Insider transaction | Aug 1, 2025 | Jul 30, 2025 |
| 4 | Insider transaction | Jul 16, 2025 | Jul 14, 2025 |
| 4 | Insider transaction | Jul 16, 2025 | Jul 14, 2025 |
| 4 | Insider transaction | Jul 16, 2025 | Jul 14, 2025 |
| 144 | Notice of proposed sale | Jul 14, 2025 | — |
| 144 | Notice of proposed sale | Jul 14, 2025 | — |
| 144 | Notice of proposed sale | Jul 14, 2025 | — |
| 4 | Insider transaction | Jul 1, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jun 9, 2025 | Jun 5, 2025 |
| 4 | Insider transaction | Jun 9, 2025 | Jun 5, 2025 |
| 4 | Insider transaction | Jun 9, 2025 | Jun 5, 2025 |
| 4 | Insider transaction | Jun 9, 2025 | Jun 5, 2025 |
| 4 | Insider transaction | Jun 9, 2025 | Jun 5, 2025 |
| 4 | Insider transaction | Jun 9, 2025 | Jun 5, 2025 |
| 4 | Insider transaction | Jun 9, 2025 | Jun 5, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 30, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 28, 2025 | — |
| 4 | Insider transaction | Mar 3, 2025 | Feb 27, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Feb 27, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Feb 27, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Feb 27, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Feb 27, 2025 |
| 4 | Insider transaction | Mar 3, 2025 | Feb 27, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 13, 2025 |
| 144 | Notice of proposed sale | Feb 18, 2025 | — |
| 144 | Notice of proposed sale | Feb 18, 2025 | — |
| 144 | Notice of proposed sale | Feb 18, 2025 | — |
| 144 | Notice of proposed sale | Feb 18, 2025 | — |
| 144 | Notice of proposed sale | Feb 18, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| 144 | Notice of proposed sale | Feb 13, 2025 | — |
| 144 | Notice of proposed sale | Feb 13, 2025 | — |
| 144 | Notice of proposed sale | Feb 13, 2025 | — |
| 144 | Notice of proposed sale | Feb 13, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 31, 2025 | — |
| 4 | Insider transaction | Jan 10, 2025 | Jan 9, 2025 |
| 3 | Initial insider ownership | Jan 10, 2025 | Jan 9, 2025 |
| 4 | Insider transaction | Jan 8, 2025 | Jan 6, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Dec 6, 2024 | — |
| 4 | Insider transaction | Dec 4, 2024 | Dec 2, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 12, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 12, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 8, 2024 | — |
| 4 | Insider transaction | Nov 1, 2024 | Oct 30, 2024 |
| SC 13G | Ownership over 5% (passive) | Oct 22, 2024 | — |
| 4 | Insider transaction | Oct 17, 2024 | Oct 15, 2024 |
| 144 | Notice of proposed sale | Oct 15, 2024 | — |
| 4 | Insider transaction | Oct 2, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Sep 20, 2024 | Sep 19, 2024 |
| 144 | Notice of proposed sale | Sep 19, 2024 | — |
| 4 | Insider transaction | Sep 16, 2024 | Sep 12, 2024 |
| 144 | Notice of proposed sale | Sep 12, 2024 | — |
| 4 | Insider transaction | Sep 6, 2024 | Sep 5, 2024 |
| 144 | Notice of proposed sale | Sep 5, 2024 | — |
| 4 | Insider transaction | Sep 4, 2024 | Sep 3, 2024 |
| 4 | Insider transaction | Aug 30, 2024 | Aug 29, 2024 |
| 144 | Notice of proposed sale | Aug 29, 2024 | — |
| 4 | Insider transaction | Aug 5, 2024 | Aug 1, 2024 |
| 4 | Insider transaction | Jul 17, 2024 | Jul 15, 2024 |
| 4 | Insider transaction | Jul 17, 2024 | Jul 15, 2024 |
| 4 | Insider transaction | Jul 17, 2024 | Jul 15, 2024 |
| 144 | Notice of proposed sale | Jul 15, 2024 | — |
| 144 | Notice of proposed sale | Jul 15, 2024 | — |
| 144 | Notice of proposed sale | Jul 15, 2024 | — |
| 4 | Insider transaction | Jul 2, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 5, 2024 | Jun 3, 2024 |
| 4 | Insider transaction | May 3, 2024 | May 1, 2024 |
| SC 13G | Ownership over 5% (passive) | Apr 22, 2024 | — |
| 4 | Insider transaction | Apr 10, 2024 | Apr 8, 2024 |
| 4 | Insider transaction | Feb 21, 2024 | Feb 16, 2024 |
| 4 | Insider transaction | Feb 21, 2024 | Feb 16, 2024 |
| 4 | Insider transaction | Feb 21, 2024 | Feb 16, 2024 |
| 4 | Insider transaction | Feb 21, 2024 | Feb 16, 2024 |
| 4 | Insider transaction | Feb 21, 2024 | Feb 16, 2024 |
| 4 | Insider transaction | Feb 21, 2024 | Feb 16, 2024 |
| 144 | Notice of proposed sale | Feb 20, 2024 | — |
| 144 | Notice of proposed sale | Feb 20, 2024 | — |
| 144 | Notice of proposed sale | Feb 20, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| 4 | Insider transaction | Feb 14, 2024 | Feb 12, 2024 |
| 4 | Insider transaction | Feb 14, 2024 | Feb 12, 2024 |
| 4 | Insider transaction | Feb 14, 2024 | Feb 12, 2024 |
| 4 | Insider transaction | Feb 14, 2024 | Feb 12, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 12, 2024 | — |
| 144 | Notice of proposed sale | Feb 12, 2024 | — |
| 144 | Notice of proposed sale | Feb 12, 2024 | — |
| 144 | Notice of proposed sale | Feb 12, 2024 | — |
| 144 | Notice of proposed sale | Feb 12, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2024 | — |
| 4/A | Form 4/a submission | Jan 23, 2024 | Jul 11, 2023 |
| 4 | Insider transaction | Jan 23, 2024 | Jul 11, 2023 |
| 4 | Insider transaction | Jan 23, 2024 | Jul 11, 2023 |
| SC 13G | Ownership over 5% (passive) | Jan 10, 2024 | — |
| 4 | Insider transaction | Dec 29, 2023 | Dec 27, 2023 |
| 4 | Insider transaction | Dec 28, 2023 | Dec 26, 2023 |
| 144 | Notice of proposed sale | Dec 27, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Aug 8, 2023 | — |
| 4 | Insider transaction | Aug 2, 2023 | Aug 1, 2023 |
| 3 | Initial insider ownership | Aug 2, 2023 | Jul 27, 2023 |
| 144 | Notice of proposed sale | Jul 13, 2023 | — |
| 144 | Notice of proposed sale | Jul 13, 2023 | — |
| 144 | Notice of proposed sale | Jul 13, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Jun 22, 2023 | — |
| 4 | Insider transaction | Jun 12, 2023 | Jun 8, 2023 |
| 4 | Insider transaction | Jun 12, 2023 | Jun 8, 2023 |
| 4 | Insider transaction | Jun 12, 2023 | Jun 8, 2023 |
| 4 | Insider transaction | Jun 12, 2023 | Jun 8, 2023 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- ANNX (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Brisbane, CA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1528115
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.