{"schema_version":"secwatch.filing_event.v1","accession":"0001759425-26-000047","form_type":"8-K","ticker":"MIRM","cik":"0001759425","company_name":"Mirum Pharmaceuticals, Inc.","filed_at":"2026-09-08T12:34:27+00:00","discovered_at":"2026-09-08T12:35:07.510743+00:00","generated_at":"2026-09-08T12:35:13.582398+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Mirum names Rob Myers CMO; Joanne Quan exits with severance","bullets":["Rob Myers, M.D. appointed Chief Medical Officer, effective Sept 21, 2026, succeeding Joanne Quan, M.D.","Joanne Quan ceased as CMO Sept 2, 2026; employment termination expected Oct 19, 2026.","Separation agreement: vested stock option exercise period extended to 12 months post-separation; 2026 annual bonus paid at 100% target.","Benefits contingent on customary conditions; separation qualifies as involuntary under Severance Plan."],"urls":{"canonical":"https://secwatch.observer/filing/0001759425-26-000047","json":"https://secwatch.observer/filing/0001759425-26-000047.json","markdown":"https://secwatch.observer/filing/0001759425-26-000047.md","text":"https://secwatch.observer/filing/0001759425-26-000047.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1759425/000175942526000047/0001759425-26-000047-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1759425/000175942526000047/mirm-20260902.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-09-08T12:35:13.582398+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"}