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 |
|---|---|---|---|
| 10-Q | Quarterly report | Aug 12, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations, Other events
|
Aug 12, 2026 | Aug 12, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Aug 10, 2026 | Aug 10, 2026 |
| 8-K |
Current report
Other events
|
Aug 6, 2026 | Aug 6, 2026 |
| 8-K |
Current report
Material agreement, New debt, Other events
|
Jul 30, 2026 | Jul 30, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 12, 2026 | Jun 11, 2026 |
| 10-Q | Quarterly report | May 7, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 7, 2026 | May 7, 2026 |
| ARS | Annual report to shareholders | Apr 27, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 27, 2026 | — |
| DEF 14A | Proxy statement | Apr 27, 2026 | Jun 11, 2026 |
| PRE 14A | Preliminary proxy statement | Apr 16, 2026 | Jun 11, 2026 |
| S-3ASR | Automatic shelf registration | Mar 31, 2026 | — |
| S-8 | Employee stock plan registration | Mar 31, 2026 | — |
| 10-K | Annual report | Mar 30, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 30, 2026 | Mar 30, 2026 |
| 8-K |
Current report
Officer or director change
|
Feb 17, 2026 | Feb 12, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 14, 2026 | Jan 14, 2026 |
| 8-K |
Current report
Other events
|
Jan 12, 2026 | Jan 12, 2026 |
| 8-K |
Current report
Material agreement, Other events
|
Nov 14, 2025 | Nov 12, 2025 |
| 424B5 | Prospectus supplement | Nov 13, 2025 | — |
| 424B5 | Prospectus supplement | Nov 12, 2025 | — |
| 10-Q | Quarterly report | Nov 10, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 10, 2025 | Nov 10, 2025 |
| 10-Q | Quarterly report | Aug 14, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 14, 2025 | Aug 14, 2025 |
| 8-K |
Current report
Change to shareholder rights
|
Jun 25, 2025 | Jun 23, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jun 9, 2025 | Jun 5, 2025 |
| 10-Q | Quarterly report | May 12, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 12, 2025 | May 12, 2025 |
| ARS | Annual report to shareholders | Apr 23, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 23, 2025 | — |
| DEF 14A | Proxy statement | Apr 23, 2025 | Jun 5, 2025 |
| S-8 | Employee stock plan registration | Mar 3, 2025 | — |
| 10-K | Annual report | Mar 3, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 3, 2025 | Mar 3, 2025 |
| 8-K |
Current report
Other events
|
Jan 13, 2025 | Jan 13, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jan 10, 2025 | Jan 10, 2025 |
| S-8 | Employee stock plan registration | Dec 19, 2024 | — |
| 8-K |
Current report
Other events
|
Dec 16, 2024 | Dec 16, 2024 |
| 10-Q | Quarterly report | Nov 14, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 14, 2024 | Nov 14, 2024 |
| 8-K |
Current report
Other events
|
Oct 22, 2024 | Oct 21, 2024 |
| S-8 | Employee stock plan registration | Sep 27, 2024 | — |
| EFFECT | Filing | Aug 15, 2024 | — |
| CORRESP | Letter to the SEC | Aug 13, 2024 | — |
| UPLOAD | Letter from the SEC | Aug 13, 2024 | — |
| S-3 | Shelf registration | Aug 12, 2024 | — |
| 10-Q | Quarterly report | Aug 12, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 12, 2024 | Aug 12, 2024 |
| 8-K |
Current report
Other events
|
Aug 5, 2024 | Aug 5, 2024 |
| 8-K |
Current report
Other events
|
Jun 25, 2024 | Jun 25, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Jun 12, 2024 | Jun 5, 2024 |
| 8-K |
Current report
Material agreement, Other events
|
Jun 7, 2024 | Jun 5, 2024 |
| 424B5 | Prospectus supplement | Jun 7, 2024 | — |
| FWP | Free writing prospectus | Jun 6, 2024 | — |
| 424B5 | Prospectus supplement | Jun 4, 2024 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jun 4, 2024 | Jun 4, 2024 |
| 10-Q | Quarterly report | May 13, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 13, 2024 | May 13, 2024 |
| 8-K |
Current report
Other events
|
May 7, 2024 | May 7, 2024 |
| ARS | Annual report to shareholders | Apr 25, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 25, 2024 | — |
| DEF 14A | Proxy statement | Apr 25, 2024 | Jun 5, 2024 |
| 424B5 | Prospectus supplement | Apr 5, 2024 | — |
| EFFECT | Filing | Apr 1, 2024 | — |
| CORRESP | Letter to the SEC | Mar 28, 2024 | — |
| UPLOAD | Letter from the SEC | Mar 28, 2024 | — |
| S-3 | Shelf registration | Mar 26, 2024 | — |
| S-8 | Employee stock plan registration | Mar 26, 2024 | — |
| 10-K | Annual report | Mar 26, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 26, 2024 | Mar 26, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 4, 2024 | Mar 1, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 8, 2024 | Jan 7, 2024 |
| 8-K/A |
Amended current report
Material agreement, Other events
|
Dec 22, 2023 | Dec 20, 2023 |
| 8-K |
Current report
Material agreement, Other events
|
Dec 21, 2023 | Dec 20, 2023 |
| 424B5 | Prospectus supplement | Dec 21, 2023 | — |
| FWP | Free writing prospectus | Dec 20, 2023 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Dec 20, 2023 | Dec 20, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 13, 2023 | Nov 13, 2023 |
| 10-Q | Quarterly report | Nov 13, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Other events
|
Oct 24, 2023 | Oct 24, 2023 |
| 8-K |
Current report
Other events
|
Oct 11, 2023 | Oct 10, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2023 | Aug 7, 2023 |
| 10-Q | Quarterly report | Aug 7, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jul 31, 2023 | Jul 27, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Jun 9, 2023 | Jun 8, 2023 |
| 8-K |
Current report
Other events
|
May 25, 2023 | May 24, 2023 |
| 8-K |
Current report
Results of operations
|
May 8, 2023 | May 8, 2023 |
| 10-Q | Quarterly report | May 8, 2023 | Mar 31, 2023 |
| ARS | Annual report to shareholders | Apr 25, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Apr 25, 2023 | — |
| DEF 14A | Proxy statement | Apr 25, 2023 | Jun 8, 2023 |
| 8-K |
Current report
Other events
|
Mar 13, 2023 | Mar 10, 2023 |
| S-8 | Employee stock plan registration | Mar 6, 2023 | — |
| 8-K |
Current report
Results of operations
|
Mar 6, 2023 | Mar 6, 2023 |
| 10-K | Annual report | Mar 6, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jan 9, 2023 | Jan 8, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jan 6, 2023 | Jan 6, 2023 |
| EFFECT | Filing | Nov 16, 2022 | — |
| 424B3 | Prospectus | Nov 16, 2022 | — |
| CORRESP | Letter to the SEC | Nov 14, 2022 | — |
| UPLOAD | Letter from the SEC | Nov 10, 2022 | — |
| S-3 | Shelf registration | Nov 4, 2022 | — |
| 8-K |
Current report
Results of operations
|
Nov 3, 2022 | Nov 3, 2022 |
| 10-Q | Quarterly report | Nov 3, 2022 | Sep 30, 2022 |
| S-8 | Employee stock plan registration | Aug 8, 2022 | — |
| 8-K |
Current report
Results of operations
|
Aug 8, 2022 | Aug 8, 2022 |
| 10-Q | Quarterly report | Aug 8, 2022 | Jun 30, 2022 |
| D | Filing | Jul 22, 2022 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Jul 8, 2022 | Jul 7, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Jun 10, 2022 | Jun 9, 2022 |
| 8-K |
Current report
Other events
|
Jun 7, 2022 | Jun 7, 2022 |
| 8-K |
Current report
Results of operations
|
May 9, 2022 | May 9, 2022 |
| 10-Q | Quarterly report | May 9, 2022 | Mar 31, 2022 |
| EFFECT | Filing | May 3, 2022 | — |
| POS EX | Filing | May 3, 2022 | — |
| DEFA14A | Additional proxy material | Apr 27, 2022 | — |
| DEF 14A | Proxy statement | Apr 27, 2022 | Jun 9, 2022 |
| 8-K |
Current report
Other events
|
Apr 7, 2022 | Apr 7, 2022 |
| POS AM | Filing | Mar 2, 2022 | — |
| S-8 | Employee stock plan registration | Mar 2, 2022 | — |
| 8-K |
Current report
Results of operations
|
Mar 1, 2022 | Mar 1, 2022 |
| 10-K | Annual report | Mar 1, 2022 | Dec 31, 2021 |
| POSASR | Filing | Mar 1, 2022 | — |
| 8-K |
Current report
Other events
|
Feb 22, 2022 | Feb 22, 2022 |
| 8-K |
Current report
Officer or director change
|
Feb 3, 2022 | Feb 1, 2022 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jan 20, 2022 | Jan 19, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 10, 2022 | Jan 10, 2022 |
| 8-K |
Current report
Other events
|
Jan 4, 2022 | Jan 4, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2021 | Nov 9, 2021 |
| 10-Q | Quarterly report | Nov 9, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Oct 4, 2021 | Sep 30, 2021 |
| S-3ASR | Automatic shelf registration | Aug 16, 2021 | — |
| 8-K |
Current report
Results of operations, Officer or director change
|
Aug 16, 2021 | Aug 12, 2021 |
| 10-Q | Quarterly report | Aug 16, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 22, 2021 | Jul 22, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Jun 8, 2021 | Jun 2, 2021 |
| 8-K |
Current report
Results of operations
|
May 17, 2021 | May 17, 2021 |
| 10-Q | Quarterly report | May 17, 2021 | Mar 31, 2021 |
| DEFA14A | Additional proxy material | Apr 22, 2021 | — |
| DEF 14A | Proxy statement | Apr 22, 2021 | Jun 2, 2021 |
| S-8 | Employee stock plan registration | Mar 25, 2021 | — |
| 8-K |
Current report
Results of operations
|
Mar 25, 2021 | Mar 25, 2021 |
| 10-K | Annual report | Mar 25, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Officer or director change
|
Mar 1, 2021 | Feb 25, 2021 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Feb 8, 2021 | Feb 5, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 11, 2021 | Jan 11, 2021 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Dec 22, 2020 | Dec 18, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 16, 2020 | Nov 16, 2020 |
| 10-Q | Quarterly report | Nov 16, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Sep 8, 2020 | Sep 8, 2020 |
| 10-Q | Quarterly report | Sep 8, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Bylaw or fiscal year change, Other events
|
Jul 28, 2020 | Jul 28, 2020 |
| S-8 | Employee stock plan registration | Jul 24, 2020 | — |
| 424B4 | Prospectus | Jul 24, 2020 | — |
| EFFECT | Filing | Jul 23, 2020 | — |
| S-1MEF | Filing | Jul 23, 2020 | — |
| SEC STAFF LETTER | Filing | Jul 23, 2020 | — |
| S-1/A | Amended registration statement | Jul 23, 2020 | — |
| CERT | 8a cert | Jul 22, 2020 | — |
| 8-A12B | Filing | Jul 21, 2020 | — |
| CORRESP | Letter to the SEC | Jul 21, 2020 | — |
| CORRESP | Letter to the SEC | Jul 21, 2020 | — |
| CORRESP | Letter to the SEC | Jul 20, 2020 | — |
| S-1/A | Amended registration statement | Jul 20, 2020 | — |
| UPLOAD | Letter from the SEC | Jul 16, 2020 | — |
| CORRESP | Letter to the SEC | Jul 16, 2020 | — |
| D | Filing | Jul 16, 2020 | — |
| CORRESP | Letter to the SEC | Jul 14, 2020 | — |
| S-1 | Registration statement | Jul 2, 2020 | — |
| DRS/A | Filing | Feb 26, 2020 | — |
| DRSLTR | Filing | Dec 6, 2019 | — |
| DRS/A | Filing | Dec 6, 2019 | — |
| UPLOAD | Letter from the SEC | Nov 22, 2019 | — |
| DRSLTR | Filing | Nov 8, 2019 | — |
| DRS/A | Filing | Nov 8, 2019 | — |
| UPLOAD | Letter from the SEC | Oct 16, 2019 | — |
| SEC STAFF LETTER | Filing | Oct 8, 2019 | — |
| DRS | Filing | Sep 18, 2019 | — |
| D | Filing | Dec 19, 2018 | — |
| D | Filing | Aug 22, 2011 | — |
Showing 182 filings. 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.