Summit Therapeutics Inc. SEC filings SMMT
Summit Therapeutics Inc. has 564 filings in SEC EDGAR's recent list, going back to Mar 4, 2014. Its latest annual report, Form ARS, was filed on Apr 17, 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 (other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Oct 14, 2026 | Oct 8, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 12, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 12, 2026 |
| 4 | Insider transaction | Jun 4, 2026 | Jun 4, 2026 |
| 4 | Insider transaction | Jun 4, 2026 | Jun 4, 2026 |
| 4 | Insider transaction | Jun 4, 2026 | Jun 4, 2026 |
| 4 | Insider transaction | Jan 12, 2026 | Jan 8, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Oct 23, 2025 | Oct 21, 2025 |
| 4 | Insider transaction | Oct 23, 2025 | Oct 21, 2025 |
| 4 | Insider transaction | Oct 23, 2025 | Oct 21, 2025 |
| 4 | Insider transaction | Oct 23, 2025 | Oct 21, 2025 |
| 4 | Insider transaction | Oct 23, 2025 | Oct 21, 2025 |
| 4 | Insider transaction | Sep 19, 2025 | Sep 18, 2025 |
| 4 | Insider transaction | Sep 11, 2025 | Sep 10, 2025 |
| 4 | Insider transaction | Sep 11, 2025 | Sep 10, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 30, 2025 |
| 4 | Insider transaction | May 1, 2025 | Apr 29, 2025 |
| 4 | Insider transaction | May 1, 2025 | Apr 29, 2025 |
| 4 | Insider transaction | May 1, 2025 | Apr 29, 2025 |
| 4 | Insider transaction | May 1, 2025 | Apr 29, 2025 |
| 4 | Insider transaction | Apr 9, 2025 | Apr 8, 2025 |
| 4 | Insider transaction | Apr 9, 2025 | Apr 8, 2025 |
| 4 | Insider transaction | Jan 14, 2025 | Jan 12, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Oct 15, 2024 | Oct 11, 2024 |
| 4 | Insider transaction | Oct 3, 2024 | Oct 3, 2024 |
| 4 | Insider transaction | Sep 13, 2024 | Sep 11, 2024 |
| 4 | Insider transaction | Sep 13, 2024 | Sep 11, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 13, 2024 | — |
| 4 | Insider transaction | Sep 13, 2024 | Sep 11, 2024 |
| 4 | Insider transaction | Sep 13, 2024 | Sep 11, 2024 |
| 4 | Insider transaction | Sep 13, 2024 | Sep 11, 2024 |
| 4 | Insider transaction | Aug 23, 2024 | Aug 23, 2024 |
| 4 | Insider transaction | Aug 23, 2024 | Aug 23, 2024 |
| 4 | Insider transaction | Jun 27, 2024 | Jun 27, 2024 |
| 3 | Initial insider ownership | Jun 27, 2024 | Jun 27, 2024 |
| 4 | Insider transaction | Apr 15, 2024 | Apr 11, 2024 |
| 3 | Initial insider ownership | Apr 15, 2024 | Apr 11, 2024 |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Apr 4, 2024 | Apr 2, 2024 |
| 3 | Initial insider ownership | Apr 4, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Mar 27, 2024 | Mar 26, 2024 |
| 4 | Insider transaction | Mar 27, 2024 | Mar 26, 2024 |
| 5 | Annual insider ownership | Feb 14, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Jan 4, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Jan 4, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Jan 4, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Jan 4, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Jan 4, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Jan 4, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Dec 13, 2023 | Dec 11, 2023 |
| 4 | Insider transaction | Dec 13, 2023 | Dec 13, 2023 |
| 4 | Insider transaction | Oct 16, 2023 | Oct 13, 2023 |
| 4 | Insider transaction | Oct 16, 2023 | Oct 13, 2023 |
| 4/A | Filing | Mar 13, 2023 | Mar 8, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Mar 13, 2023 | — |
| 4 | Insider transaction | Mar 8, 2023 | Mar 8, 2023 |
| 4 | Insider transaction | Mar 8, 2023 | Mar 7, 2023 |
| 4/A | Form 4/a | Mar 8, 2023 | Aug 16, 2022 |
| 4 | Insider transaction | Mar 8, 2023 | Mar 6, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 16, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| 3 | Initial insider ownership | Jan 26, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 5, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Jan 5, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Jan 5, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Jan 5, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Jan 5, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Dec 9, 2022 | Dec 6, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 9, 2022 | — |
| 4 | Insider transaction | Dec 8, 2022 | Dec 6, 2022 |
| 4 | Insider transaction | Nov 17, 2022 | Nov 15, 2022 |
| 3 | Initial insider ownership | Nov 17, 2022 | Nov 15, 2022 |
| 3 | Initial insider ownership | Oct 3, 2022 | Sep 28, 2022 |
| 4 | Insider transaction | Oct 3, 2022 | Sep 28, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 18, 2022 | — |
| 4 | Insider transaction | Aug 18, 2022 | Aug 16, 2022 |
| 4 | Insider transaction | Aug 18, 2022 | Aug 16, 2022 |
| 4 | Insider transaction | Aug 17, 2022 | Aug 16, 2022 |
| 3 | Initial insider ownership | Jun 2, 2022 | May 31, 2022 |
| 4 | Insider transaction | Jun 2, 2022 | May 31, 2022 |
| 4 | Insider transaction | May 25, 2022 | May 23, 2022 |
| 4 | Insider transaction | Apr 26, 2022 | Apr 25, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| 4 | Insider transaction | Jan 5, 2022 | Jan 3, 2022 |
| 4 | Insider transaction | Jan 5, 2022 | Jan 3, 2022 |
| 4 | Insider transaction | Jan 5, 2022 | Jan 3, 2022 |
| 4 | Insider transaction | Jan 5, 2022 | Jan 3, 2022 |
| 4 | Insider transaction | Dec 17, 2021 | Dec 15, 2021 |
| 4 | Insider transaction | Dec 17, 2021 | Dec 15, 2021 |
| 4 | Insider transaction | Nov 16, 2021 | Nov 3, 2021 |
| 3 | Initial insider ownership | Nov 16, 2021 | Nov 3, 2021 |
| 4 | Insider transaction | Nov 15, 2021 | Nov 11, 2021 |
| 4 | Insider transaction | Oct 12, 2021 | Oct 7, 2021 |
| 3 | Initial insider ownership | Oct 12, 2021 | Oct 7, 2021 |
| 3 | Initial insider ownership | Jul 9, 2021 | Jul 2, 2021 |
| 4 | Insider transaction | May 14, 2021 | May 12, 2021 |
| 4 | Insider transaction | May 14, 2021 | May 12, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | May 14, 2021 | — |
| SC 13D/A | Amended ownership over 5% (active) | Apr 22, 2021 | — |
| SC 13D/A | Amended ownership over 5% (active) | Mar 26, 2021 | — |
| 4 | Insider transaction | Mar 2, 2021 | Feb 26, 2021 |
| 3 | Initial insider ownership | Mar 2, 2021 | Feb 26, 2021 |
| 4 | Insider transaction | Feb 23, 2021 | Feb 19, 2021 |
| 4 | Insider transaction | Feb 23, 2021 | Feb 19, 2021 |
| 4 | Insider transaction | Feb 23, 2021 | Feb 19, 2021 |
| 4 | Insider transaction | Feb 23, 2021 | Feb 19, 2021 |
| SC 13G | Ownership over 5% (passive) | Feb 16, 2021 | — |
| 4 | Insider transaction | Dec 1, 2020 | Nov 27, 2020 |
| 4 | Insider transaction | Nov 25, 2020 | Nov 23, 2020 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 25, 2020 | — |
| 4 | Insider transaction | Nov 24, 2020 | Nov 22, 2020 |
| 4 | Insider transaction | Nov 13, 2020 | Nov 11, 2020 |
| 3 | Initial insider ownership | Nov 13, 2020 | Nov 11, 2020 |
| 4 | Insider transaction | Nov 10, 2020 | Nov 6, 2020 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 10, 2020 | — |
| SC 13D/A | Amended ownership over 5% (active) | Nov 10, 2020 | — |
| 4 | Insider transaction | Oct 7, 2020 | Oct 4, 2020 |
| 3 | Initial insider ownership | Oct 7, 2020 | Oct 4, 2020 |
| SC 13D/A | Amended ownership over 5% (active) | Oct 7, 2020 | — |
| 4 | Insider transaction | Oct 6, 2020 | Oct 2, 2020 |
| SC 13D | Ownership over 5% (active) | Sep 28, 2020 | — |
| SC 13D | Ownership over 5% (active) | Sep 28, 2020 | — |
| 3 | Initial insider ownership | Sep 18, 2020 | Sep 18, 2020 |
| 3 | Initial insider ownership | Sep 18, 2020 | Sep 18, 2020 |
| 3 | Initial insider ownership | Sep 18, 2020 | Sep 18, 2020 |
| 3 | Initial insider ownership | Sep 18, 2020 | Sep 18, 2020 |
| 3 | Initial insider ownership | Sep 18, 2020 | Sep 18, 2020 |
| 3 | Initial insider ownership | Sep 18, 2020 | Sep 18, 2020 |
| 3 | Initial insider ownership | Sep 18, 2020 | Sep 18, 2020 |
| 3 | Initial insider ownership | Sep 18, 2020 | Sep 18, 2020 |
| SC 13D/A | Amended ownership over 5% (active) | Jun 17, 2020 | — |
| SC 13D/A | Amended ownership over 5% (active) | May 15, 2020 | — |
| SC 13D/A | Amended ownership over 5% (active) | Mar 26, 2020 | — |
| SC 13D | Ownership over 5% (active) | Jan 23, 2020 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jan 16, 2020 | — |
| SC 13D/A | Amended ownership over 5% (active) | Dec 27, 2019 | — |
| SC 13D/A | Amended ownership over 5% (active) | Dec 10, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2019 | — |
| SC 13D | Ownership over 5% (active) | Jan 22, 2019 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jan 11, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2018 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jan 30, 2018 | — |
| SC 13D/A | Amended ownership over 5% (active) | Sep 20, 2017 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2017 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2016 | — |
| SC 13D/A | Amended ownership over 5% (active) | Mar 26, 2015 | — |
| SC 13D | Ownership over 5% (active) | Mar 16, 2015 | — |
| SC 13G | Ownership over 5% (passive) | Mar 11, 2015 | — |
Showing 165 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
- SMMT (Nasdaq)
- Fiscal year ends
- December 31
- Headquarters
- Miami, FL
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1599298
- Former names
- Summit Therapeutics plc (until Sep 17, 2020); Summit Corp plc (until Jan 30, 2015)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.