Company filings profile · CIK 0001599298
Summit Therapeutics Inc. — SEC filings & insider activity.
Real, source-linked SEC EDGAR activity for Summit Therapeutics Inc. (SMMT): 11 filings in the last 90 days vs 17 in the prior 90 (filing-velocity cooling ↓ · 0.65×). Latest material 8-K events, insider Form-4 transactions, and periodic reports — monitored for change.
✔ Verified against the public SEC EDGAR filing record as of Sep 29, 2026. Source-linked, daily-refreshed.
Material 8-K events — Summit Therapeutics Inc.
8-K disclosures decoded by item code (the material events: agreements, results, control/management changes, impairments, restatements).
| Filed | Event | |
|---|---|---|
| Sep 29, 2026 | Entry into a Material Agreement; Unregistered Sale of Securities; Amendments to Bylaws/Charter; Other Events; Financial Statements and Exhibits | ↗ |
| Sep 15, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
| Sep 14, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
| Sep 3, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
| Aug 26, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
| Aug 5, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
| Jul 23, 2026 | Entry into a Material Agreement; Financial Statements and Exhibits | ↗ |
| Jul 23, 2026 | Results of Operations (earnings); Regulation FD Disclosure; Financial Statements and Exhibits | ↗ |
| Jul 22, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
| Jun 12, 2026 | Item 5.07 | ↗ |
| Jun 11, 2026 | Regulation FD Disclosure | ↗ |
| Jun 3, 2026 | Other Events | ↗ |
| Jun 1, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
| Apr 30, 2026 | Results of Operations (earnings); Financial Statements and Exhibits | ↗ |
| Feb 23, 2026 | Results of Operations (earnings); Regulation FD Disclosure; Financial Statements and Exhibits | ↗ |
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Insider transactions (Form 4 / 3 / 5)
Recent filings
| Filed | Form | Detail | |
|---|---|---|---|
| Sep 29, 2026 | 8-K | Entry into a Material Agreement; Unregistered Sale of Securities; Amendments to Bylaws/Charter; Other Events; Financial Statements and Exhibits | ↗ |
| Sep 15, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Sep 14, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Sep 3, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Aug 26, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Aug 5, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Jul 23, 2026 | 8-K | Entry into a Material Agreement; Financial Statements and Exhibits | ↗ |
| Jul 23, 2026 | 424B5 | 424B5 | ↗ |
| Jul 23, 2026 | 10-Q | 10-Q | ↗ |
| Jul 23, 2026 | 8-K | Results of Operations (earnings); Regulation FD Disclosure; Financial Statements and Exhibits | ↗ |
| Jul 22, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Jun 12, 2026 | 8-K | Item 5.07 | ↗ |
| Jun 12, 2026 | 4 | FORM 4 | ↗ |
| Jun 12, 2026 | 4 | FORM 4 | ↗ |
| Jun 11, 2026 | 8-K | Regulation FD Disclosure | ↗ |
| Jun 10, 2026 | 424B5 | 424B5 | ↗ |
| Jun 9, 2026 | S-3ASR | S-3ASR | ↗ |
| Jun 4, 2026 | 4 | FORM 4 | ↗ |
| Jun 4, 2026 | 4 | FORM 4 | ↗ |
| Jun 4, 2026 | 4 | FORM 4 | ↗ |
| Jun 3, 2026 | 8-K | Other Events | ↗ |
| Jun 1, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Apr 30, 2026 | 10-Q | 10-Q | ↗ |
| Apr 30, 2026 | 8-K | Results of Operations (earnings); Financial Statements and Exhibits | ↗ |
| Apr 17, 2026 | DEFA14A | DEFA14A | ↗ |
| Apr 17, 2026 | ARS | ARS | ↗ |
| Apr 17, 2026 | DEF 14A | DEF 14A | ↗ |
| Apr 6, 2026 | PRE 14A | PRE 14A | ↗ |
| Feb 23, 2026 | S-8 | S-8 | ↗ |
| Feb 23, 2026 | 10-K | 10-K | ↗ |
| Feb 23, 2026 | 8-K | Results of Operations (earnings); Regulation FD Disclosure; Financial Statements and Exhibits | ↗ |
| Jan 29, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Jan 12, 2026 | 4 | FORM 4 | ↗ |
| Jan 12, 2026 | 8-K | Results of Operations (earnings); Regulation FD Disclosure; Financial Statements and Exhibits | ↗ |
| Jan 6, 2026 | 4 | FORM 4 | ↗ |
| Jan 6, 2026 | 4 | FORM 4 | ↗ |
| Jan 6, 2026 | 4 | FORM 4 | ↗ |
| Jan 6, 2026 | 4 | FORM 4 | ↗ |
| Jan 6, 2026 | 4 | FORM 4 | ↗ |
| Jan 6, 2026 | 4 | FORM 4 | ↗ |