Seres Therapeutics, Inc. SEC filings MCRB
Seres Therapeutics, Inc. has 724 filings in SEC EDGAR's recent list, going back to Jun 9, 2014. Its latest annual report, Form 10-K, was filed on Mar 12, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 4, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 4, 2026 (results of operations, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 4, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 4, 2026 | Nov 4, 2026 |
| 8-K |
Current report
Officer or director change
|
Oct 26, 2026 | Oct 22, 2026 |
| EFFECT | Filing | Aug 21, 2026 | — |
| 4 | Insider transaction | Aug 18, 2026 | Aug 15, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 15, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 15, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 15, 2026 |
| S-3 | Shelf registration | Aug 13, 2026 | — |
| 10-Q | Quarterly report | Aug 5, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2026 | Aug 5, 2026 |
| 8-K |
Current report
Material agreement, Agreement ended
|
Aug 4, 2026 | Jul 31, 2026 |
| 424B5 | Prospectus supplement | Aug 4, 2026 | — |
| 4 | Insider transaction | Jul 10, 2026 | Jul 8, 2026 |
| 4 | Insider transaction | Jul 10, 2026 | Jul 8, 2026 |
| 4 | Insider transaction | Jul 10, 2026 | Jul 8, 2026 |
| 4 | Insider transaction | Jul 10, 2026 | Jul 8, 2026 |
| 4 | Insider transaction | Jul 10, 2026 | Jul 8, 2026 |
| 4 | Insider transaction | Jul 10, 2026 | Jul 8, 2026 |
| 4 | Insider transaction | Jul 10, 2026 | Jul 8, 2026 |
| 4 | Insider transaction | Jul 10, 2026 | Jul 8, 2026 |
| 4 | Insider transaction | Jul 10, 2026 | Jul 8, 2026 |
| 4 | Insider transaction | Jul 10, 2026 | Jul 8, 2026 |
| 4 | Insider transaction | Jul 10, 2026 | Jul 8, 2026 |
| 4 | Insider transaction | Jul 10, 2026 | Jul 8, 2026 |
| S-8 | Employee stock plan registration | Jul 9, 2026 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jul 8, 2026 | Jul 8, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jul 8, 2026 | Jul 8, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Jun 5, 2026 | Jun 2, 2026 |
| 8-K |
Current report
Officer or director change
|
Jun 1, 2026 | May 30, 2026 |
| 144 | Notice of proposed sale | May 19, 2026 | — |
| 4 | Insider transaction | May 19, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 19, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 19, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 19, 2026 | May 15, 2026 |
| 10-Q | Quarterly report | May 5, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 5, 2026 | May 5, 2026 |
| DEFA14A | Additional proxy material | Apr 27, 2026 | — |
| DEF 14A | Proxy statement | Apr 27, 2026 | Jun 9, 2026 |
| 144 | Notice of proposed sale | Mar 17, 2026 | — |
| 8-K |
Current report
Other events
|
Mar 16, 2026 | Mar 16, 2026 |
| 10-K | Annual report | Mar 12, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Mar 12, 2026 | Mar 12, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Mar 4, 2026 |
| 3 | Initial insider ownership | Mar 11, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 4, 2026 |
| 8-K |
Current report
Officer or director change
|
Mar 2, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 15, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 15, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 15, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 15, 2026 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 15, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 15, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 15, 2025 |
| 4 | Insider transaction | Nov 18, 2025 | Nov 15, 2025 |
| 10-Q | Quarterly report | Nov 5, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 5, 2025 | Nov 5, 2025 |
| 8-K |
Current report
Other events
|
Oct 3, 2025 | Sep 23, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 26, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 26, 2025 |
| 4 | Insider transaction | Aug 19, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 19, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 19, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 19, 2025 | Aug 15, 2025 |
| 4 | Insider transaction | Aug 6, 2025 | Aug 5, 2025 |
| 3 | Initial insider ownership | Aug 6, 2025 | Aug 5, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 6, 2025 | — |
| 10-Q | Quarterly report | Aug 6, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 6, 2025 | Aug 6, 2025 |
| 8-K |
Current report
Officer or director change
|
Jul 22, 2025 | Jul 17, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jun 6, 2025 | — |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| S-8 | Employee stock plan registration | May 7, 2025 | — |
| 10-Q | Quarterly report | May 7, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 7, 2025 | May 7, 2025 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Apr 22, 2025 | Apr 21, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results, Other events
|
Apr 14, 2025 | Apr 10, 2025 |
| 4 | Insider transaction | Apr 11, 2025 | Apr 10, 2025 |
| 4 | Insider transaction | Apr 11, 2025 | Apr 10, 2025 |
| 4 | Insider transaction | Apr 11, 2025 | Apr 10, 2025 |
| 4 | Insider transaction | Apr 11, 2025 | Apr 10, 2025 |
| 4 | Insider transaction | Apr 11, 2025 | Apr 10, 2025 |
| 4 | Insider transaction | Apr 11, 2025 | Apr 10, 2025 |
| 4 | Insider transaction | Apr 11, 2025 | Apr 10, 2025 |
| DEFA14A | Additional proxy material | Apr 4, 2025 | — |
| DEF 14A | Proxy statement | Mar 13, 2025 | Mar 13, 2025 |
| S-8 | Employee stock plan registration | Mar 13, 2025 | — |
| 10-K | Annual report | Mar 13, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Mar 13, 2025 | Mar 13, 2025 |
| PRE 14A | Preliminary proxy statement | Mar 3, 2025 | Mar 3, 2025 |
| 8-K |
Current report
Officer or director change
|
Feb 27, 2025 | Feb 22, 2025 |
| 4 | Insider transaction | Feb 19, 2025 | Feb 15, 2025 |
| 4 | Insider transaction | Feb 19, 2025 | Feb 15, 2025 |
| 4 | Insider transaction | Feb 19, 2025 | Feb 15, 2025 |
| 4 | Insider transaction | Feb 19, 2025 | Feb 15, 2025 |
| 4 | Insider transaction | Feb 19, 2025 | Feb 15, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 12, 2025 | — |
| 4 | Insider transaction | Feb 11, 2025 | Feb 7, 2025 |
| 4 | Insider transaction | Feb 11, 2025 | Feb 7, 2025 |
| 4 | Insider transaction | Feb 11, 2025 | Feb 7, 2025 |
| 4 | Insider transaction | Feb 11, 2025 | Feb 7, 2025 |
| 4 | Insider transaction | Feb 11, 2025 | Feb 7, 2025 |
| 4 | Insider transaction | Feb 11, 2025 | Feb 7, 2025 |
| 4 | Insider transaction | Feb 6, 2025 | Feb 4, 2025 |
| 8-K |
Current report
Officer or director change
|
Feb 6, 2025 | Feb 4, 2025 |
| 3 | Initial insider ownership | Feb 6, 2025 | Feb 4, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 13, 2025 | Jan 13, 2025 |
| 8-K |
Current report
Results of operations, Other events
|
Jan 10, 2025 | Jan 9, 2025 |
| 4 | Insider transaction | Nov 19, 2024 | Nov 15, 2024 |
| 4 | Insider transaction | Nov 19, 2024 | Nov 15, 2024 |
| 4 | Insider transaction | Nov 19, 2024 | Nov 15, 2024 |
| 4 | Insider transaction | Nov 19, 2024 | Nov 15, 2024 |
| 4 | Insider transaction | Nov 19, 2024 | Nov 15, 2024 |
| 10-Q | Quarterly report | Nov 13, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations, Listing notice, Regulation FD disclosure
|
Nov 13, 2024 | Nov 7, 2024 |
| 4 | Insider transaction | Oct 29, 2024 | Oct 27, 2024 |
| 4 | Insider transaction | Oct 29, 2024 | Oct 27, 2024 |
| 4 | Insider transaction | Oct 29, 2024 | Oct 27, 2024 |
| 4 | Insider transaction | Oct 29, 2024 | Oct 27, 2024 |
| 4 | Insider transaction | Oct 29, 2024 | Oct 27, 2024 |
| EFFECT | Filing | Oct 11, 2024 | — |
| 424B3 | Prospectus | Oct 11, 2024 | — |
| CORRESP | Letter to the SEC | Oct 9, 2024 | — |
| UPLOAD | Letter from the SEC | Oct 8, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Oct 2, 2024 | — |
| 3 | Initial insider ownership | Oct 2, 2024 | Sep 30, 2024 |
| S-3 | Shelf registration | Oct 1, 2024 | — |
| 8-K |
Current report
Material agreement, Agreement ended, Acquisition or sale of assets, Unregistered share sale, Regulation FD disclosure
|
Oct 1, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Sep 26, 2024 | Sep 26, 2024 |
| DEFA14A | Additional proxy material | Sep 12, 2024 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 12, 2024 | Sep 12, 2024 |
| DEFM14A | Filing | Aug 26, 2024 | — |
| 4 | Insider transaction | Aug 19, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Aug 15, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Aug 15, 2024 |
| DEFA14A | Additional proxy material | Aug 15, 2024 | — |
| PREM14A | Filing | Aug 15, 2024 | Aug 15, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 15, 2024 | Aug 15, 2024 |
| DEFA14A | Additional proxy material | Aug 13, 2024 | — |
| 10-Q | Quarterly report | Aug 13, 2024 | Jun 30, 2024 |
| DEFA14A | Additional proxy material | Aug 13, 2024 | — |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 13, 2024 | Aug 13, 2024 |
| DEFA14A | Additional proxy material | Aug 7, 2024 | — |
| DEFA14A | Additional proxy material | Aug 7, 2024 | — |
| DEFA14A | Additional proxy material | Aug 6, 2024 | — |
| DEFA14A | Additional proxy material | Aug 6, 2024 | — |
| 8-K |
Current report
Material agreement, Agreement ended, Unregistered share sale
|
Aug 6, 2024 | Aug 5, 2024 |
| 4 | Insider transaction | Aug 6, 2024 | Aug 3, 2024 |
| DEFA14A | Additional proxy material | Aug 6, 2024 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 6, 2024 | Aug 6, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 14, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 10-Q | Quarterly report | May 8, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 8, 2024 | May 8, 2024 |
| 8-K | Current report | May 7, 2024 | May 1, 2024 |
| 8-K |
Current report
Listing notice
|
Apr 23, 2024 | Apr 19, 2024 |
| 4 | Insider transaction | Apr 8, 2024 | Apr 4, 2024 |
| 4 | Insider transaction | Apr 8, 2024 | Apr 4, 2024 |
| 4 | Insider transaction | Apr 8, 2024 | Apr 4, 2024 |
| 4 | Insider transaction | Apr 8, 2024 | Apr 4, 2024 |
| 4 | Insider transaction | Apr 8, 2024 | Apr 4, 2024 |
| 4 | Insider transaction | Apr 8, 2024 | Apr 4, 2024 |
| 4 | Insider transaction | Apr 8, 2024 | Apr 4, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
Apr 8, 2024 | Apr 4, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Apr 5, 2024 | — |
| 4 | Insider transaction | Mar 27, 2024 | Mar 25, 2024 |
| 3 | Initial insider ownership | Mar 27, 2024 | Mar 25, 2024 |
| DEF 14A | Proxy statement | Mar 5, 2024 | Mar 5, 2024 |
| S-8 | Employee stock plan registration | Mar 5, 2024 | — |
| 10-K | Annual report | Mar 5, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 5, 2024 | Mar 5, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Feb 26, 2024 | Feb 24, 2024 |
| PRE 14A | Preliminary proxy statement | Feb 23, 2024 | Feb 22, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 14, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 14, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 14, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 14, 2024 |
| 4 | Insider transaction | Feb 16, 2024 | Feb 14, 2024 |
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
- MCRB (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Cambridge, MA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1609809
- Former names
- Seres Therapeutics, Inc. (until Nov 4, 2026); Seres Health, Inc. (until May 14, 2015)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.