{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-304948","form_type":"8-K","ticker":"THG","cik":"0000944695","company_name":"HANOVER INSURANCE GROUP, INC.","filed_at":"2026-07-15T21:13:55+00:00","discovered_at":"2026-07-15T21:16:00.297317+00:00","generated_at":"2026-07-15T21:16:11.019438+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Hanover Insurance CEO John C. Roche to retire Dec 31, 2026; COO Richard W. Lavey named CEO-Elect","bullets":["John C. Roche, 62, will retire as President and CEO and from the Board effective Dec 31, 2026, after a 40-year career.","Richard W. Lavey, 59, appointed CEO-Elect; expected to become CEO on Jan 1, 2027 and join the Board.","Lavey has been COO since March 2025 and previously led Hanover Agency Markets, which represents 75% of $7B gross premiums.","Roche will remain an employee in an advisory capacity through Jan 8, 2027; retirement not related to any disagreement.","Company plans to discuss strategy at investor day on Sep 17, 2026 and next earnings call on Jul 29, 2026."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-304948","json":"https://secwatch.observer/filing/0001193125-26-304948.json","markdown":"https://secwatch.observer/filing/0001193125-26-304948.md","text":"https://secwatch.observer/filing/0001193125-26-304948.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/944695/000119312526304948/0001193125-26-304948-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/944695/000119312526304948/d160982d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-07-15T21:16:11.019438+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"}