{"schema_version":"secwatch.filing_event.v1","accession":"0001664710-24-000026","form_type":"8-K","ticker":"KROS","cik":"0001664710","company_name":"Keros Therapeutics, Inc.","filed_at":"2024-03-05T23:59:59+00:00","discovered_at":"2026-05-14T18:03:25.031493+00:00","generated_at":"2026-06-05T03:50:03.583958+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Keros CMO Simon Cooper resigns effective March 12, 2024","bullets":["Simon Cooper, M.B.B.S., voluntarily resigned as CMO effective March 12, 2024, to pursue other opportunities.","Resignation is not due to any disagreement with the company.","Company has commenced a search for a new Chief Medical Officer."],"urls":{"canonical":"https://secwatch.observer/filing/0001664710-24-000026","json":"https://secwatch.observer/filing/0001664710-24-000026.json","markdown":"https://secwatch.observer/filing/0001664710-24-000026.md","text":"https://secwatch.observer/filing/0001664710-24-000026.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1664710/000166471024000026/0001664710-24-000026-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1664710/000166471024000026/kros-20240229.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-05T03:50:03.583958+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":"307a0f00ec","claim":"Simon Cooper resigned as Chief Medical Officer at Keros Therapeutics, Inc..","evidence_excerpt":"On February 29, 2024, Simon Cooper, M.B.B.S., resigned from his position as Chief Medical Officer of Keros Therapeutics, Inc. (the “Company”), effective March 12, 2024, to pursue other opportunities.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1664710/000166471024000026/0001664710-24-000026-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Chief Medical Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}