{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-26-062043","form_type":"8-K","ticker":"RGEN","cik":"0000730272","company_name":"REPLIGEN CORP","filed_at":"2026-09-15T20:04:13+00:00","discovered_at":"2026-09-15T20:05:01.829656+00:00","generated_at":"2026-09-15T20:05:07.733051+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Repligen director Karen A. Dawes to retire from board effective Sept 30, 2026","bullets":["Karen A. Dawes retiring from Repligen board after over 20 years of service, effective Sept 30, 2026.","Retirement not due to disagreement with company operations, policies, or procedures.","Dawes cites completed CEO transition and confidence in leadership team and future growth."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-26-062043","json":"https://secwatch.observer/filing/0001628280-26-062043.json","markdown":"https://secwatch.observer/filing/0001628280-26-062043.md","text":"https://secwatch.observer/filing/0001628280-26-062043.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/730272/000162828026062043/0001628280-26-062043-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/730272/000162828026062043/rgen-20260910.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-09-15T20:05:07.733051+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":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}