{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-286867","form_type":"8-K","ticker":"BRK-B","cik":"0001067983","company_name":"BERKSHIRE HATHAWAY INC","filed_at":"2023-12-01T23:59:59+00:00","discovered_at":"2026-05-14T18:03:28.107200+00:00","generated_at":"2026-06-07T19:08:42.722953+00:00","sec_items":["8.01","9.01"],"event_type":"leadership","sentiment":"negative","materiality_score":0.85,"calibrated_materiality_score":0.85,"confidence":"high","headline":"Berkshire Hathaway Vice Chairman Charlie Munger dies on Nov 28, 2023","bullets":["Charles T. Munger, Vice Chairman, died peacefully on November 28, 2023 at a California hospital.","Warren Buffett said Berkshire could not have been built without Charlie's inspiration, wisdom, and participation.","Munger's family will handle all affairs per his instructions."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-286867","json":"https://secwatch.observer/filing/0001193125-23-286867.json","markdown":"https://secwatch.observer/filing/0001193125-23-286867.md","text":"https://secwatch.observer/filing/0001193125-23-286867.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1067983/000119312523286867/0001193125-23-286867-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1067983/000119312523286867/d551397d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-07T19:08:42.722953+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"}