{"schema_version":"secwatch.filing_event.v1","accession":"0001438472-26-000026","form_type":"8-K","ticker":"MIAX","cik":"0001438472","company_name":"MIAMI INTERNATIONAL HOLDINGS, INC.","filed_at":"2026-04-09T23:59:59+00:00","discovered_at":"2026-05-14T18:02:32.293419+00:00","generated_at":"2026-05-15T06:46:57.812869+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Miami International Holdings announces death of director Murray Stahl on April 9, 2026","bullets":["Director Murray Stahl passed away; company announced his passing on April 9, 2026.","No replacement board member has been disclosed.","Company expressed gratitude for Stahl's dedication and service.","Stahl was a valued member of the Board; no further details on operational impact."],"urls":{"canonical":"https://secwatch.observer/filing/0001438472-26-000026","json":"https://secwatch.observer/filing/0001438472-26-000026.json","markdown":"https://secwatch.observer/filing/0001438472-26-000026.md","text":"https://secwatch.observer/filing/0001438472-26-000026.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1438472/000143847226000026/0001438472-26-000026-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1438472/000143847226000026/miax-20260407.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T06:46:57.812869+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"}