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 |
|---|---|---|---|
| 8-K |
Current report
Other events
|
Nov 4, 2026 | Nov 4, 2026 |
| 424B7 | Filing | Nov 4, 2026 | — |
| 10-Q | Quarterly report | Nov 4, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations, Bylaw or fiscal year change, Shareholder vote results
|
Nov 4, 2026 | Nov 4, 2026 |
| DEF 14A | Proxy statement | Oct 19, 2026 | Nov 4, 2026 |
| 4 | Insider transaction | Oct 14, 2026 | Oct 8, 2026 |
| PRE 14A | Preliminary proxy statement | Oct 6, 2026 | Oct 6, 2026 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Bylaw or fiscal year change, Other events
|
Sep 29, 2026 | Sep 28, 2026 |
| 8-K |
Current report
Other events
|
Sep 15, 2026 | Sep 15, 2026 |
| 8-K |
Current report
Other events
|
Sep 14, 2026 | Sep 13, 2026 |
| 8-K |
Current report
Other events
|
Sep 3, 2026 | Sep 2, 2026 |
| 8-K |
Current report
Other events
|
Aug 26, 2026 | Aug 25, 2026 |
| 8-K |
Current report
Other events
|
Aug 5, 2026 | Aug 5, 2026 |
| 8-K |
Current report
Material agreement
|
Jul 23, 2026 | Jul 23, 2026 |
| 424B5 | Prospectus supplement | Jul 23, 2026 | — |
| 10-Q | Quarterly report | Jul 23, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jul 23, 2026 | Jul 23, 2026 |
| 8-K |
Current report
Other events
|
Jul 22, 2026 | Jul 22, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 12, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 12, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 11, 2026 | Jun 10, 2026 |
| 424B5 | Prospectus supplement | Jun 10, 2026 | — |
| S-3ASR | Automatic shelf registration | Jun 9, 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 |
| 8-K |
Current report
Other events
|
Jun 3, 2026 | Jun 2, 2026 |
| 8-K |
Current report
Other events
|
Jun 1, 2026 | May 30, 2026 |
| 10-Q | Quarterly report | Apr 30, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
Apr 30, 2026 | Apr 30, 2026 |
| UPLOAD | Letter from the SEC | Apr 27, 2026 | — |
| DEFA14A | Additional proxy material | Apr 17, 2026 | — |
| ARS | Annual report to shareholders | Apr 17, 2026 | Dec 31, 2025 |
| DEF 14A | Proxy statement | Apr 17, 2026 | Apr 17, 2026 |
| CORRESP | Letter to the SEC | Apr 16, 2026 | — |
| PRE 14A | Preliminary proxy statement | Apr 6, 2026 | Apr 6, 2026 |
| UPLOAD | Letter from the SEC | Apr 2, 2026 | — |
| S-8 | Employee stock plan registration | Feb 23, 2026 | — |
| 10-K | Annual report | Feb 23, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 23, 2026 | Feb 23, 2026 |
| 8-K |
Current report
Other events
|
Jan 29, 2026 | Jan 29, 2026 |
| 4 | Insider transaction | Jan 12, 2026 | Jan 8, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 12, 2026 | Jan 12, 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 |
| 8-K |
Current report
Other events
|
Nov 7, 2025 | Nov 7, 2025 |
| S-3ASR | Automatic shelf registration | Oct 29, 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 | Oct 23, 2025 | Oct 21, 2025 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Oct 22, 2025 | Oct 21, 2025 |
| 10-Q | Quarterly report | Oct 20, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations, Other events
|
Oct 20, 2025 | Oct 17, 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 |
| 8-K |
Current report
Other events
|
Sep 8, 2025 | Sep 7, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 11, 2025 | Aug 11, 2025 |
| 8-K |
Current report
Material agreement
|
Aug 11, 2025 | Aug 11, 2025 |
| 424B5 | Prospectus supplement | Aug 11, 2025 | — |
| 10-Q | Quarterly report | Aug 11, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Material agreement
|
Jun 20, 2025 | Jun 16, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jun 17, 2025 | Jun 12, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 30, 2025 |
| 4 | Insider transaction | Jun 2, 2025 | May 30, 2025 |
| 8-K |
Current report
Other events
|
May 30, 2025 | May 30, 2025 |
| S-8 | Employee stock plan registration | May 19, 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 |
| 10-Q | Quarterly report | May 1, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 1, 2025 | May 1, 2025 |
| ARS | Annual report to shareholders | Apr 29, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | Apr 29, 2025 | Jun 12, 2025 |
| 8-K |
Current report
Other events
|
Apr 25, 2025 | Apr 25, 2025 |
| 8-K |
Current report
Other events
|
Apr 23, 2025 | Apr 23, 2025 |
| 4 | Insider transaction | Apr 9, 2025 | Apr 8, 2025 |
| 4 | Insider transaction | Apr 9, 2025 | Apr 8, 2025 |
| 10-K | Annual report | Feb 24, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 24, 2025 | Feb 24, 2025 |
| 8-K |
Current report
Officer or director change, Other events
|
Jan 24, 2025 | Jan 22, 2025 |
| UPLOAD | Letter from the SEC | Jan 21, 2025 | — |
| 4 | Insider transaction | Jan 14, 2025 | Jan 12, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 13, 2025 | Jan 13, 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 |
| CORRESP | Letter to the SEC | Jan 6, 2025 | — |
| UPLOAD | Letter from the SEC | Dec 19, 2024 | — |
| 10-Q | Quarterly report | Oct 30, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Oct 30, 2024 | Oct 30, 2024 |
| 4 | Insider transaction | Oct 15, 2024 | Oct 11, 2024 |
| 4 | Insider transaction | Oct 3, 2024 | Oct 3, 2024 |
| D | Filing | Sep 26, 2024 | — |
| S-3ASR | Automatic shelf registration | Sep 19, 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 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Sep 12, 2024 | Sep 11, 2024 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 9, 2024 | Sep 8, 2024 |
| 4 | Insider transaction | Aug 23, 2024 | Aug 23, 2024 |
| 4 | Insider transaction | Aug 23, 2024 | Aug 23, 2024 |
| S-3ASR | Automatic shelf registration | Aug 6, 2024 | — |
| 10-Q | Quarterly report | Aug 6, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 6, 2024 | Aug 6, 2024 |
| 4 | Insider transaction | Jun 27, 2024 | Jun 27, 2024 |
| 3 | Initial insider ownership | Jun 27, 2024 | Jun 27, 2024 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Jun 27, 2024 | Jun 27, 2024 |
| D | Filing | Jun 18, 2024 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 17, 2024 | Jun 12, 2024 |
| DEFA14A | Additional proxy material | Jun 13, 2024 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Jun 3, 2024 | Jun 3, 2024 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jun 3, 2024 | May 31, 2024 |
| 8-K |
Current report
Other events
|
May 30, 2024 | May 30, 2024 |
| 8-K |
Current report
Other events
|
May 24, 2024 | May 24, 2024 |
| 8-K |
Current report
Material agreement
|
May 13, 2024 | May 13, 2024 |
| 424B5 | Prospectus supplement | May 13, 2024 | — |
| S-8 | Employee stock plan registration | May 1, 2024 | — |
| 8-K |
Current report
Results of operations
|
May 1, 2024 | May 1, 2024 |
| 10-Q | Quarterly report | May 1, 2024 | Mar 31, 2024 |
| DEF 14A | Proxy statement | Apr 25, 2024 | Jun 14, 2024 |
| 4 | Insider transaction | Apr 15, 2024 | Apr 11, 2024 |
| 3 | Initial insider ownership | Apr 15, 2024 | Apr 11, 2024 |
| 8-K |
Current report
Officer or director change
|
Apr 11, 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 |
| 8-K |
Current report
Officer or director change
|
Apr 3, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Mar 27, 2024 | Mar 26, 2024 |
| 4 | Insider transaction | Mar 27, 2024 | Mar 26, 2024 |
| 8-K |
Current report
Other events
|
Mar 22, 2024 | Mar 22, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 12, 2024 | Mar 12, 2024 |
| 8-K |
Current report
Other events
|
Mar 5, 2024 | Mar 5, 2024 |
| EFFECT | Filing | Feb 27, 2024 | — |
| CORRESP | Letter to the SEC | Feb 23, 2024 | — |
| UPLOAD | Letter from the SEC | Feb 22, 2024 | — |
| 8-K |
Current report
Results of operations
|
Feb 20, 2024 | Feb 20, 2024 |
| S-3 | Shelf registration | Feb 20, 2024 | — |
| 10-K | Annual report | Feb 20, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 15, 2024 | Feb 14, 2024 |
| 5 | Annual insider ownership | Feb 14, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Other events
|
Feb 8, 2024 | Feb 7, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 8, 2024 | Jan 8, 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 | Jan 4, 2024 | Jan 2, 2024 |
| 8-K |
Current report
Other events
|
Jan 3, 2024 | Jan 3, 2024 |
| 4 | Insider transaction | Dec 13, 2023 | Dec 11, 2023 |
| 4 | Insider transaction | Dec 13, 2023 | Dec 13, 2023 |
| 10-Q | Quarterly report | Nov 7, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2023 | Nov 7, 2023 |
| 8-K |
Current report
Other events
|
Oct 31, 2023 | Oct 31, 2023 |
| 4 | Insider transaction | Oct 16, 2023 | Oct 13, 2023 |
| 4 | Insider transaction | Oct 16, 2023 | Oct 13, 2023 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Officer or director change, Shareholder vote results, Other events
|
Oct 16, 2023 | Oct 12, 2023 |
| DEF 14A | Proxy statement | Sep 19, 2023 | Oct 12, 2023 |
| PRE 14A | Preliminary proxy statement | Sep 8, 2023 | Sep 8, 2023 |
| 10-Q | Quarterly report | Aug 9, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 9, 2023 | Aug 9, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 2, 2023 | Aug 2, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 5, 2023 | Jun 4, 2023 |
| 8-K |
Current report
Other events
|
Jun 1, 2023 | Jun 1, 2023 |
| 8-K |
Current report
Shareholder vote results
|
May 25, 2023 | May 23, 2023 |
| 8-K |
Current report
Results of operations
|
May 11, 2023 | May 11, 2023 |
| 10-Q | Quarterly report | May 11, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Other events
|
May 9, 2023 | May 9, 2023 |
| 8-K |
Current report
Other events
|
May 3, 2023 | May 3, 2023 |
| EFFECT | Filing | Apr 27, 2023 | — |
| CORRESP | Letter to the SEC | Apr 25, 2023 | — |
| DEF 14A | Proxy statement | Apr 21, 2023 | May 23, 2023 |
| UPLOAD | Letter from the SEC | Mar 22, 2023 | — |
| 8-K |
Current report
Other events
|
Mar 17, 2023 | Mar 17, 2023 |
| S-3 | Shelf registration | Mar 17, 2023 | — |
| 4/A | Filing | Mar 13, 2023 | Mar 8, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Mar 13, 2023 | — |
| 10-K | Annual report | Mar 9, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Mar 9, 2023 | Mar 9, 2023 |
| 4 | Insider transaction | Mar 8, 2023 | Mar 8, 2023 |
| 4 | Insider transaction | Mar 8, 2023 | Mar 7, 2023 |
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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.