{"schema_version":"secwatch.filing_event.v1","accession":"0001193805-21-001429","form_type":"8-K","ticker":"SMMT","cik":"0001599298","company_name":"Summit Therapeutics Inc.","filed_at":"2021-10-08T23:59:59+00:00","discovered_at":"2026-05-14T18:04:13.219235+00:00","generated_at":"2026-06-28T21:51:36.143429+00:00","sec_items":["5.02","8.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.45,"calibrated_materiality_score":0.45,"confidence":"high","headline":"Summit Therapeutics appoints Kenneth A. Clark, partner at WSGR, to Board; Erdtmann resigns","bullets":["Kenneth A. Clark elected to board of directors, effective October 7, 2021.","Clark is a partner at Wilson Sonsini Goodrich & Rosati, specializing in biotech strategic M&A and financing.","Ramses Erdtmann resigned to pursue other opportunities; resignation not due to any disagreement with the company.","Clark appointed to Audit, Compensation, and Nominating and Corporate Governance Committees.","Received grant of stock options under Summit's non-employee director compensation policy."],"urls":{"canonical":"https://secwatch.observer/filing/0001193805-21-001429","json":"https://secwatch.observer/filing/0001193805-21-001429.json","markdown":"https://secwatch.observer/filing/0001193805-21-001429.md","text":"https://secwatch.observer/filing/0001193805-21-001429.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1599298/000119380521001429/0001193805-21-001429-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1599298/000119380521001429/e620998_8k-summit.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-28T21:51:36.143429+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"4ce2f9b0f3","claim":"Kenneth A. Clark was elected as Director at Summit Therapeutics Inc..","evidence_excerpt":"Effective on October 7, 2021, the board of directors (the “Board”) of Summit Therapeutics Inc. (the “Company”) unanimously approved (i) the election of Kenneth A. Clark as a director of the Company and (ii) the appointment of Mr. Clark to serve on each of the Audit, Compensation, and Nominating and Corporate Governance Committees.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1599298/000119380521001429/0001193805-21-001429-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"elected"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"b40a8639d3","claim":"Ramses Erdtmann resigned as Director at Summit Therapeutics Inc..","evidence_excerpt":"On October 7, 2021, Ramses Erdtmann resigned from the Board to pursue other professional opportunities.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1599298/000119380521001429/0001193805-21-001429-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}