{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-086392","form_type":"8-K","ticker":"SEM","cik":"0001320414","company_name":"SELECT MEDICAL HOLDINGS CORP","filed_at":"2025-09-02T23:59:59+00:00","discovered_at":"2026-05-14T18:02:43.648084+00:00","generated_at":"2026-05-17T08:44:56.491692+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"Select Medical names Thomas P. Mullin CEO; David Chernow becomes Vice Chairman","bullets":["Mullin, 41, promoted from Co-President, effective Sept 1, 2025; Chernow (CEO since 2014) becomes Vice Chairman.","John A. Saich becomes sole President (was Co-President); retains oversight of outpatient rehab and shared services.","John F. Duggan appointed EVP, General Counsel and Secretary; Michael Tarvin transitions to senior EVP of legal services.","Mullin joined Select Medical in 2008, most recently oversaw 140 critical illness recovery and inpatient rehab hospitals.","All changes effective immediately; company cites internal succession planning with long-tenured leaders."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-086392","json":"https://secwatch.observer/filing/0001104659-25-086392.json","markdown":"https://secwatch.observer/filing/0001104659-25-086392.md","text":"https://secwatch.observer/filing/0001104659-25-086392.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1320414/000110465925086392/0001104659-25-086392-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1320414/000110465925086392/tm2524778d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T08:44:56.491692+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"}