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 |
|---|---|---|---|
| 4 | Insider transaction | Oct 5, 2026 | Oct 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 | — |
| 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 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 14, 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 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | 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 |
| 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 | — |
| 4 | Insider transaction | Oct 3, 2025 | Oct 1, 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 | — |
| 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 | — |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 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 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 11, 2025 | — |
| 4 | Insider transaction | Apr 3, 2025 | Apr 1, 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 |
| 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 7, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 7, 2024 | — |
| 4 | Insider transaction | Oct 2, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | Jul 1, 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 |
| 4 | Insider transaction | May 29, 2024 | May 25, 2024 |
| 3 | Initial insider ownership | May 29, 2024 | May 25, 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 |
| SC 13D/A | Amended ownership over 5% (active) | Mar 27, 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 | — |
| 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 |
| 4 | Insider transaction | Oct 3, 2023 | Oct 2, 2023 |
| 4 | Insider transaction | Oct 3, 2023 | Oct 2, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jun 13, 2023 | Jun 9, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Jun 13, 2023 | — |
| 4 | Insider transaction | Jun 8, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 7, 2023 |
| SC 13G | Ownership over 5% (passive) | Jun 1, 2023 | — |
| 4 | Insider transaction | Apr 4, 2023 | Apr 3, 2023 |
| 4 | Insider transaction | Apr 4, 2023 | Apr 3, 2023 |
| 4 | Insider transaction | Feb 15, 2023 | Feb 13, 2023 |
| 4 | Insider transaction | Feb 15, 2023 | Feb 13, 2023 |
| 4 | Insider transaction | Feb 15, 2023 | Feb 13, 2023 |
| 4 | Insider transaction | Feb 15, 2023 | Feb 13, 2023 |
| 4 | Insider transaction | Feb 15, 2023 | Feb 13, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Feb 3, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Feb 3, 2023 | — |
| 4 | Insider transaction | Jan 4, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Oct 4, 2022 | Oct 3, 2022 |
| 4 | Insider transaction | Oct 4, 2022 | Oct 3, 2022 |
| SC 13G | Ownership over 5% (passive) | Sep 6, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Jul 8, 2022 | — |
| 4 | Insider transaction | Jul 5, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 5, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 1, 2022 | Jun 30, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Jun 21, 2022 | — |
| 4 | Insider transaction | Jun 21, 2022 | Jun 16, 2022 |
| SC 13G | Ownership over 5% (passive) | Jun 17, 2022 | — |
| 4 | Insider transaction | Jun 9, 2022 | Jun 7, 2022 |
| 4 | Insider transaction | Jun 9, 2022 | Jun 7, 2022 |
| 4 | Insider transaction | Jun 9, 2022 | Jun 7, 2022 |
| 4 | Insider transaction | Jun 9, 2022 | Jun 7, 2022 |
| 4 | Insider transaction | Jun 9, 2022 | Jun 7, 2022 |
| 4 | Insider transaction | Jun 9, 2022 | Jun 7, 2022 |
| 4 | Insider transaction | Apr 5, 2022 | Apr 1, 2022 |
| 4 | Insider transaction | Apr 5, 2022 | Apr 1, 2022 |
| SC 13G | Ownership over 5% (passive) | Mar 1, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Feb 11, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Feb 4, 2022 | — |
| 4 | Insider transaction | Jan 27, 2022 | Jan 25, 2022 |
| 4 | Insider transaction | Jan 27, 2022 | Jan 25, 2022 |
| 4 | Insider transaction | Jan 27, 2022 | Jan 25, 2022 |
| 4 | Insider transaction | Jan 27, 2022 | Jan 25, 2022 |
| 4 | Insider transaction | Jan 27, 2022 | Jan 25, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 25, 2022 | — |
| 4 | Insider transaction | Jan 4, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Jan 4, 2022 | Jan 3, 2022 |
| 4 | Insider transaction | Jan 4, 2022 | Jan 3, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 17, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Nov 4, 2021 | — |
| 4 | Insider transaction | Oct 5, 2021 | Oct 1, 2021 |
| 4 | Insider transaction | Oct 5, 2021 | Oct 1, 2021 |
| SC 13G | Ownership over 5% (passive) | Jul 8, 2021 | — |
| 4 | Insider transaction | Jul 6, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jul 6, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | May 5, 2021 | May 3, 2021 |
| 3 | Initial insider ownership | May 5, 2021 | May 3, 2021 |
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.