Cogent Biosciences, Inc. SEC filings COGT
Cogent Biosciences, Inc. has 616 filings in SEC EDGAR's recent list, going back to Oct 20, 2014. Its latest annual report, Form ARS, was filed on Apr 23, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 5, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2026 | Nov 5, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 8-K |
Current report
Material agreement
|
Sep 2, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Aug 31, 2026 | Aug 27, 2026 |
| 144 | Notice of proposed sale | Aug 27, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 2026 | — |
| 8-K |
Current report
Other events
|
Aug 10, 2026 | Aug 10, 2026 |
| 424B5 | Prospectus supplement | Aug 10, 2026 | — |
| 10-Q | Quarterly report | Aug 10, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2026 | Aug 10, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 31, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 27, 2026 | — |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 9, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 11, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 14, 2026 | — |
| 10-Q | Quarterly report | May 5, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 5, 2026 | May 5, 2026 |
| ARS | Annual report to shareholders | Apr 23, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 23, 2026 | — |
| DEF 14A | Proxy statement | Apr 23, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | Apr 3, 2026 | Apr 1, 2026 |
| 144 | Notice of proposed sale | Mar 31, 2026 | — |
| 4 | Insider transaction | Mar 31, 2026 | Mar 31, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Mar 31, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| S-8 | Employee stock plan registration | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| 10-K | Annual report | Feb 17, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 17, 2026 | Feb 17, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 30, 2026 | — |
| 4 | Insider transaction | Jan 22, 2026 | Jan 22, 2026 |
| 144 | Notice of proposed sale | Jan 22, 2026 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jan 22, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 21, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 21, 2026 | — |
| 4 | Insider transaction | Jan 5, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Dec 30, 2025 | Dec 26, 2025 |
| 4 | Insider transaction | Dec 30, 2025 | Dec 26, 2025 |
| 4 | Insider transaction | Dec 30, 2025 | Dec 26, 2025 |
| 4 | Insider transaction | Dec 30, 2025 | Dec 26, 2025 |
| 144 | Notice of proposed sale | Dec 29, 2025 | — |
| 144 | Notice of proposed sale | Dec 29, 2025 | — |
| 144 | Notice of proposed sale | Dec 29, 2025 | — |
| 144 | Notice of proposed sale | Dec 29, 2025 | — |
| 4 | Insider transaction | Dec 19, 2025 | Dec 17, 2025 |
| 4 | Insider transaction | Dec 19, 2025 | Dec 17, 2025 |
| 4 | Insider transaction | Dec 19, 2025 | Dec 17, 2025 |
| 4 | Insider transaction | Dec 19, 2025 | Dec 17, 2025 |
| 4 | Insider transaction | Dec 19, 2025 | Dec 17, 2025 |
| 4 | Insider transaction | Dec 19, 2025 | Dec 17, 2025 |
| 8-K |
Current report
Other events
|
Dec 8, 2025 | Dec 6, 2025 |
| 8-K |
Current report
Material agreement, New debt
|
Nov 18, 2025 | Nov 18, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Nov 17, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| 8-K |
Current report
Material agreement, Other events
|
Nov 13, 2025 | Nov 11, 2025 |
| 424B5 | Prospectus supplement | Nov 12, 2025 | — |
| 424B5 | Prospectus supplement | Nov 12, 2025 | — |
| FWP | Free writing prospectus | Nov 12, 2025 | — |
| 424B5 | Prospectus supplement | Nov 12, 2025 | — |
| 424B5 | Prospectus supplement | Nov 12, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Nov 10, 2025 | Nov 10, 2025 |
| S-3ASR | Automatic shelf registration | Nov 7, 2025 | — |
| 10-Q | Quarterly report | Nov 7, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 3, 2025 | Nov 3, 2025 |
| 4 | Insider transaction | Oct 3, 2025 | Oct 1, 2025 |
| 8-K |
Current report
Material agreement, New debt
|
Sep 11, 2025 | Sep 5, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 10-Q | Quarterly report | Aug 5, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2025 | Aug 5, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jul 14, 2025 | — |
| 4 | Insider transaction | Jul 14, 2025 | Jul 10, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 11, 2025 | — |
| 8-K |
Current report
Material agreement, Results of operations
|
Jul 10, 2025 | Jul 7, 2025 |
| 424B5 | Prospectus supplement | Jul 9, 2025 | — |
| 424B5 | Prospectus supplement | Jul 8, 2025 | — |
| 8-K |
Current report
Other events
|
Jul 7, 2025 | Jul 7, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure
|
Jun 11, 2025 | Jun 11, 2025 |
| 4 | Insider transaction | Jun 5, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 5, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 5, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 5, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 5, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Jun 5, 2025 | Jun 4, 2025 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results, Regulation FD disclosure
|
Jun 5, 2025 | Jun 4, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| EFFECT | Filing | May 9, 2025 | — |
| 10-Q | Quarterly report | May 6, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 6, 2025 | May 6, 2025 |
| 424B5 | Prospectus supplement | May 6, 2025 | — |
| POS AM | Filing | May 6, 2025 | — |
| ARS | Annual report to shareholders | Apr 22, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 22, 2025 | — |
| DEF 14A | Proxy statement | Apr 22, 2025 | Jun 4, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 11, 2025 | — |
| PRE 14A | Preliminary proxy statement | Apr 11, 2025 | Jun 4, 2025 |
| 4 | Insider transaction | Apr 3, 2025 | Apr 1, 2025 |
| S-8 | Employee stock plan registration | Feb 25, 2025 | — |
| 10-K | Annual report | Feb 25, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 25, 2025 | Feb 25, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 12, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 12, 2025 | — |
| 4 | Insider transaction | Jan 27, 2025 | Jan 23, 2025 |
| 4 | Insider transaction | Jan 27, 2025 | Jan 23, 2025 |
| 4 | Insider transaction | Jan 27, 2025 | Jan 23, 2025 |
| 4 | Insider transaction | Jan 27, 2025 | Jan 23, 2025 |
| 4 | Insider transaction | Jan 27, 2025 | Jan 23, 2025 |
| 4 | Insider transaction | Jan 27, 2025 | Jan 23, 2025 |
| 4 | Insider transaction | Jan 15, 2025 | Jan 14, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 8-K |
Current report
Other events
|
Dec 9, 2024 | Dec 8, 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 | — |
| 10-Q | Quarterly report | Nov 12, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2024 | Nov 12, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 7, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 7, 2024 | — |
| 4 | Insider transaction | Oct 2, 2024 | Oct 1, 2024 |
| 8-K |
Current report
Other events
|
Sep 3, 2024 | Sep 3, 2024 |
| S-8 | Employee stock plan registration | Aug 6, 2024 | — |
| 10-Q | Quarterly report | Aug 6, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2024 | Aug 6, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | Jul 1, 2024 |
| 8-K |
Current report
Other events
|
Jun 27, 2024 | Jun 27, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 5, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Jun 13, 2024 | — |
| 4 | Insider transaction | Jun 12, 2024 | Jun 10, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
Jun 5, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | May 29, 2024 | May 25, 2024 |
| 3 | Initial insider ownership | May 29, 2024 | May 25, 2024 |
| 10-Q | Quarterly report | May 7, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 7, 2024 | May 7, 2024 |
| ARS | Annual report to shareholders | Apr 23, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 23, 2024 | — |
| DEF 14A | Proxy statement | Apr 23, 2024 | Jun 5, 2024 |
| PRE 14A | Preliminary proxy statement | Apr 12, 2024 | Jun 5, 2024 |
| EFFECT | Filing | Apr 10, 2024 | — |
| CORRESP | Letter to the SEC | Apr 8, 2024 | — |
| UPLOAD | Letter from the SEC | Apr 5, 2024 | — |
| 4 | Insider transaction | Apr 2, 2024 | Apr 1, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Apr 1, 2024 | — |
| 4 | Insider transaction | Apr 1, 2024 | Mar 28, 2024 |
| S-3 | Shelf registration | Mar 29, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Mar 27, 2024 | — |
| 8-K |
Current report
Unregistered share sale, Bylaw or fiscal year change
|
Mar 22, 2024 | Mar 21, 2024 |
| S-8 | Employee stock plan registration | Feb 26, 2024 | — |
| 10-K | Annual report | Feb 26, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 26, 2024 | Feb 26, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 16, 2024 | — |
| 4 | Insider transaction | Feb 16, 2024 | Feb 16, 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 | Ownership over 5% (passive) | Feb 14, 2024 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Bylaw or fiscal year change, Regulation FD disclosure
|
Feb 14, 2024 | Feb 13, 2024 |
| SC 13G | Ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 9, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 5, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 26, 2024 | — |
| 4 | Insider transaction | Jan 25, 2024 | Jan 23, 2024 |
| 4 | Insider transaction | Jan 25, 2024 | Jan 23, 2024 |
| 4 | Insider transaction | Jan 25, 2024 | Jan 23, 2024 |
| 4 | Insider transaction | Jan 25, 2024 | Jan 23, 2024 |
| 4 | Insider transaction | Jan 25, 2024 | Jan 23, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 23, 2024 | — |
| 4 | Insider transaction | Jan 4, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Jan 4, 2024 | Jan 2, 2024 |
| 8-K |
Current report
Other events
|
Dec 11, 2023 | Dec 9, 2023 |
| 10-Q | Quarterly report | Nov 7, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2023 | Nov 2, 2023 |
| 4 | Insider transaction | Oct 3, 2023 | Oct 2, 2023 |
| 4 | Insider transaction | Oct 3, 2023 | Oct 2, 2023 |
| S-8 | Employee stock plan registration | Aug 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
- COGT (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Waltham, MA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1622229
- Former names
- Unum Therapeutics Inc. (until Oct 5, 2020); Unum Therapeutics, Inc. (until Mar 30, 2018)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.