Septerna, Inc. SEC filings SEPN
Septerna, Inc. has 170 filings in SEC EDGAR's recent list, going back to Jul 13, 2023. Its latest annual report, Form ARS, was filed on Apr 30, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 10, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Nov 4, 2026 (regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Regulation FD disclosure
|
Nov 4, 2026 | Nov 4, 2026 |
| 4 | Insider transaction | Oct 19, 2026 | Oct 15, 2026 |
| 144 | Notice of proposed sale | Oct 1, 2026 | — |
| 144 | Notice of proposed sale | Oct 1, 2026 | — |
| 4 | Insider transaction | Sep 10, 2026 | Sep 8, 2026 |
| 3 | Initial insider ownership | Sep 3, 2026 | Aug 24, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Aug 25, 2026 | Aug 22, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Aug 12, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Aug 14, 2026 | — |
| 4 | Insider transaction | Aug 14, 2026 | Aug 12, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| 4 | Insider transaction | Aug 13, 2026 | Aug 11, 2026 |
| 144 | Notice of proposed sale | Aug 12, 2026 | — |
| 144 | Notice of proposed sale | Aug 12, 2026 | — |
| 144 | Notice of proposed sale | Aug 12, 2026 | — |
| 144 | Notice of proposed sale | Aug 11, 2026 | — |
| 10-Q | Quarterly report | Aug 10, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2026 | Aug 10, 2026 |
| 4 | Insider transaction | Aug 5, 2026 | Aug 3, 2026 |
| 4 | Insider transaction | Jul 17, 2026 | Jul 15, 2026 |
| 144 | Notice of proposed sale | Jul 15, 2026 | — |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jun 30, 2026 | Jun 26, 2026 |
| 4 | Insider transaction | Jun 30, 2026 | Jun 29, 2026 |
| 4 | Insider transaction | Jun 30, 2026 | Jun 26, 2026 |
| 4 | Insider transaction | Jun 30, 2026 | Jun 26, 2026 |
| 4 | Insider transaction | Jun 30, 2026 | Jun 26, 2026 |
| 4 | Insider transaction | Jun 30, 2026 | Jun 26, 2026 |
| 4 | Insider transaction | Jun 30, 2026 | Jun 26, 2026 |
| 4 | Insider transaction | Jun 30, 2026 | Jun 26, 2026 |
| 4 | Insider transaction | Jun 30, 2026 | Jun 26, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 30, 2026 | Jun 26, 2026 |
| 144 | Notice of proposed sale | Jun 26, 2026 | — |
| 4 | Insider transaction | Jun 24, 2026 | Jun 22, 2026 |
| 144 | Notice of proposed sale | Jun 22, 2026 | — |
| 144 | Notice of proposed sale | Jun 22, 2026 | — |
| 4 | Insider transaction | Jun 16, 2026 | Jun 12, 2026 |
| 144 | Notice of proposed sale | Jun 12, 2026 | — |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 26, 2026 |
| 144 | Notice of proposed sale | May 26, 2026 | — |
| 10-Q | Quarterly report | May 11, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 11, 2026 | May 11, 2026 |
| ARS | Annual report to shareholders | Apr 30, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 30, 2026 | — |
| DEF 14A | Proxy statement | Apr 30, 2026 | Apr 30, 2026 |
| 4 | Insider transaction | Apr 17, 2026 | Apr 15, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 13, 2026 | Apr 13, 2026 |
| S-3ASR | Automatic shelf registration | Mar 10, 2026 | — |
| S-8 | Employee stock plan registration | Mar 9, 2026 | — |
| 10-K | Annual report | Mar 9, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 9, 2026 | Mar 9, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 144 | Notice of proposed sale | Mar 2, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Mar 2, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 144 | Notice of proposed sale | Feb 18, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| 4 | Insider transaction | Feb 10, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 10, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 10, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 10, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 10, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 10, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 10, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 10, 2026 | Feb 6, 2026 |
| 3 | Initial insider ownership | Jan 15, 2026 | Jan 5, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 12, 2026 | Jan 12, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 8, 2026 | Jan 8, 2026 |
| 4 | Insider transaction | Nov 13, 2025 | Nov 10, 2025 |
| 144 | Notice of proposed sale | Nov 10, 2025 | — |
| 10-Q | Quarterly report | Nov 10, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 10, 2025 | Nov 10, 2025 |
| 4 | Insider transaction | Sep 29, 2025 | Sep 25, 2025 |
| 3 | Initial insider ownership | Sep 29, 2025 | Sep 25, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Sep 29, 2025 | Sep 25, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 3, 2025 | Sep 3, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 21, 2025 | Aug 21, 2025 |
| 4 | Insider transaction | Aug 19, 2025 | Aug 18, 2025 |
| 4 | Insider transaction | Aug 11, 2025 | Aug 7, 2025 |
| 4 | Insider transaction | Aug 11, 2025 | Aug 7, 2025 |
| 4 | Insider transaction | Aug 11, 2025 | Aug 7, 2025 |
| 4 | Insider transaction | Aug 11, 2025 | Aug 7, 2025 |
| 4 | Insider transaction | Aug 11, 2025 | Aug 7, 2025 |
| 4 | Insider transaction | Aug 11, 2025 | Aug 7, 2025 |
| 4 | Insider transaction | Aug 11, 2025 | Aug 7, 2025 |
| 10-Q | Quarterly report | Aug 11, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 11, 2025 | Aug 11, 2025 |
| 8-K |
Current report
Officer or director change
|
Aug 4, 2025 | Jul 30, 2025 |
| 8-K |
Current report
Other events
|
Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jun 20, 2025 | Jun 17, 2025 |
| 4 | Insider transaction | Jun 20, 2025 | Jun 17, 2025 |
| 4 | Insider transaction | Jun 20, 2025 | Jun 17, 2025 |
| 4 | Insider transaction | Jun 20, 2025 | Jun 17, 2025 |
| 4 | Insider transaction | Jun 20, 2025 | Jun 17, 2025 |
| 4 | Insider transaction | Jun 20, 2025 | Jun 17, 2025 |
| 4 | Insider transaction | Jun 20, 2025 | Jun 17, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jun 18, 2025 | Jun 17, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jun 10, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| 10-Q | Quarterly report | May 15, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 15, 2025 | May 15, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
May 14, 2025 | May 13, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 9, 2025 | — |
| ARS | Annual report to shareholders | Apr 29, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 29, 2025 | — |
| DEF 14A | Proxy statement | Apr 29, 2025 | Jun 17, 2025 |
| 4 | Insider transaction | Apr 4, 2025 | Apr 2, 2025 |
| S-8 | Employee stock plan registration | Mar 27, 2025 | — |
| 10-K | Annual report | Mar 27, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 27, 2025 | Mar 27, 2025 |
| 4 | Insider transaction | Mar 10, 2025 | Mar 7, 2025 |
| 4 | Insider transaction | Mar 6, 2025 | Mar 4, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 3, 2025 | Mar 3, 2025 |
| 4 | Insider transaction | Feb 27, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 27, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 24, 2025 |
| 4 | Insider transaction | Feb 24, 2025 | Feb 20, 2025 |
| 4 | Insider transaction | Feb 21, 2025 | Feb 19, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 18, 2025 | Feb 18, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 13, 2025 | — |
| 4 | Insider transaction | Feb 7, 2025 | Feb 7, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 13, 2025 | Jan 13, 2025 |
| 3 | Initial insider ownership | Jan 7, 2025 | Jan 6, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jan 6, 2025 | Dec 6, 2024 |
| 10-Q | Quarterly report | Nov 20, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 20, 2024 | Nov 20, 2024 |
| SC 13D | Ownership over 5% (active) | Nov 4, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 4, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 1, 2024 | — |
| 4 | Insider transaction | Oct 30, 2024 | Oct 28, 2024 |
| 4 | Insider transaction | Oct 28, 2024 | Oct 28, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Oct 28, 2024 | Oct 28, 2024 |
| S-8 | Employee stock plan registration | Oct 25, 2024 | — |
| 424B4 | Prospectus | Oct 25, 2024 | — |
| EFFECT | Filing | Oct 24, 2024 | — |
| 3 | Initial insider ownership | Oct 24, 2024 | Oct 24, 2024 |
| 3 | Initial insider ownership | Oct 24, 2024 | Oct 24, 2024 |
| 3 | Initial insider ownership | Oct 24, 2024 | Oct 24, 2024 |
| 3 | Initial insider ownership | Oct 24, 2024 | Oct 24, 2024 |
| 3 | Initial insider ownership | Oct 24, 2024 | Oct 24, 2024 |
| 3 | Initial insider ownership | Oct 24, 2024 | Oct 24, 2024 |
| 3 | Initial insider ownership | Oct 24, 2024 | Oct 24, 2024 |
| 3 | Initial insider ownership | Oct 24, 2024 | Oct 24, 2024 |
| 3 | Initial insider ownership | Oct 24, 2024 | Oct 24, 2024 |
| 3 | Initial insider ownership | Oct 24, 2024 | Oct 24, 2024 |
| 3 | Initial insider ownership | Oct 24, 2024 | Oct 24, 2024 |
| 3 | Initial insider ownership | Oct 24, 2024 | Oct 24, 2024 |
| 3 | Initial insider ownership | Oct 24, 2024 | Oct 24, 2024 |
| 3 | Initial insider ownership | Oct 24, 2024 | Oct 24, 2024 |
| 3 | Initial insider ownership | Oct 24, 2024 | Oct 24, 2024 |
| S-1MEF | Filing | Oct 24, 2024 | — |
| CERT | Filing | Oct 24, 2024 | — |
| S-1/A | Amended registration statement | Oct 24, 2024 | — |
| 8-A12B | Filing | Oct 22, 2024 | — |
| CORRESP | Letter to the SEC | Oct 22, 2024 | — |
| CORRESP | Letter to the SEC | Oct 22, 2024 | — |
| S-1/A | Amended registration statement | Oct 21, 2024 | — |
| CORRESP | Letter to the SEC | Oct 15, 2024 | — |
| CORRESP | Letter to the SEC | Oct 2, 2024 | — |
| S-1 | Registration statement | Oct 2, 2024 | — |
| UPLOAD | Letter from the SEC | Sep 24, 2024 | — |
| DRS/A | Filing | Sep 12, 2024 | — |
| DRSLTR | Filing | Sep 11, 2024 | — |
| UPLOAD | Letter from the SEC | Sep 5, 2024 | — |
| DRS | Filing | Aug 2, 2024 | — |
| D | Filing | Jul 13, 2023 | — |
Showing 170 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
- SEPN (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- South San Francisco, CA
- SEC filer status
- , Emerging growth company
- SEC CIK
- 1984086
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.