{"schema_version":"secwatch.filing_event.v1","accession":"0000011544-26-000016","form_type":"8-K","ticker":"WRB","cik":"0000011544","company_name":"BERKLEY W R CORP","filed_at":"2026-06-10T20:15:22+00:00","discovered_at":"2026-06-10T20:17:00.345159+00:00","generated_at":"2026-06-10T20:23:36.322369+00:00","sec_items":["8.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.85,"calibrated_materiality_score":0.85,"confidence":"high","headline":"W.R. Berkley Corp founder and Executive Chairman William R. Berkley dies at 80; son named Chairman","bullets":["William R. Berkley, founder and Executive Chairman, passed away at age 80.","Board appointed W. Robert Berkley, Jr. (President and CEO) as Chairman, effective immediately.","Berkley founded the company in 1967; built it into a Fortune 500 commercial insurer.","No other leadership changes; succession plan already in place with son as CEO."],"urls":{"canonical":"https://secwatch.observer/filing/0000011544-26-000016","json":"https://secwatch.observer/filing/0000011544-26-000016.json","markdown":"https://secwatch.observer/filing/0000011544-26-000016.md","text":"https://secwatch.observer/filing/0000011544-26-000016.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/11544/000001154426000016/0000011544-26-000016-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/11544/000001154426000016/wrb-20260609.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-10T20:23:36.322369+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"}