{"schema_version":"secwatch.filing_event.v1","accession":"0001664710-23-000025","form_type":"8-K","ticker":"KROS","cik":"0001664710","company_name":"Keros Therapeutics, Inc.","filed_at":"2023-04-19T23:59:59+00:00","discovered_at":"2026-05-14T18:03:39.934314+00:00","generated_at":"2026-06-16T23:40:10.686581+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.25,"calibrated_materiality_score":0.25,"confidence":"high","headline":"Keros Therapeutics appoints Alpna Seth, Ph.D., to board effective May 1, 2023","bullets":["Board increased to eight members; Dr. Seth appointed as Class II director with term through 2025 annual meeting.","Dr. Seth will serve on the Compensation Committee.","Initial option grant of 20,000 shares vesting quarterly over three years; annual retainer $40,000 (board) plus $6,000 (committee).","Dr. Seth previously CEO of Nura Bio, COO of Vir Biotechnology, and SVP at Biogen."],"urls":{"canonical":"https://secwatch.observer/filing/0001664710-23-000025","json":"https://secwatch.observer/filing/0001664710-23-000025.json","markdown":"https://secwatch.observer/filing/0001664710-23-000025.md","text":"https://secwatch.observer/filing/0001664710-23-000025.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1664710/000166471023000025/0001664710-23-000025-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1664710/000166471023000025/kros-20230413.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-16T23:40:10.686581+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":"5c9f63d0aa","claim":"Dr. Alpna Seth was appointed as director at Keros Therapeutics, Inc..","evidence_excerpt":"Dr. Alpna Seth as a director of the Company, effective on May 1, 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1664710/000166471023000025/0001664710-23-000025-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"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"}