{"schema_version":"secwatch.filing_event.v1","accession":"0000062709-26-000035","form_type":"8-K","ticker":"MRSH","cik":"0000062709","company_name":"MARSH & MCLENNAN COMPANIES, INC.","filed_at":"2026-02-25T23:59:59+00:00","discovered_at":"2026-05-14T18:02:37.464334+00:00","generated_at":"2026-05-16T00:32:54.687141+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Marsh & McLennan appoints Peter Harrison as independent director, effective immediately","bullets":["Peter Harrison, age 59, appointed to Board effective February 25, 2026; Board expands to 13 members.","Harrison retired from Schroders plc in 2024, served as CEO from 2016 and Global Head of Investment.","Also currently on boards of Morgan Sindall plc and Lazard, Inc.","Board committee assignments to be disclosed in the 2026 proxy statement.","Harrison's appointment reflects commitment to adding financial services and global leadership experience."],"urls":{"canonical":"https://secwatch.observer/filing/0000062709-26-000035","json":"https://secwatch.observer/filing/0000062709-26-000035.json","markdown":"https://secwatch.observer/filing/0000062709-26-000035.md","text":"https://secwatch.observer/filing/0000062709-26-000035.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/62709/000006270926000035/0000062709-26-000035-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/62709/000006270926000035/adirectorappointment022520.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T00:32:54.687141+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"}