{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-21-273619","form_type":"8-K","ticker":"WRB","cik":"0000011544","company_name":"BERKLEY W R CORP","filed_at":"2021-09-15T23:59:59+00:00","discovered_at":"2026-05-14T18:04:17.314841+00:00","generated_at":"2026-06-29T03:25:59.541043+00:00","sec_items":["1.01","2.03","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"WRB closes $350M offering of 3.150% Senior Notes due 2061","bullets":["Issued $350 million aggregate principal of 3.150% Senior Notes due 2061 on Sept 15, 2021.","Notes are senior unsecured obligations, issued under a supplemental indenture with BNY Mellon as trustee.","Proceeds not specified; typical use is general corporate purposes."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-21-273619","json":"https://secwatch.observer/filing/0001193125-21-273619.json","markdown":"https://secwatch.observer/filing/0001193125-21-273619.md","text":"https://secwatch.observer/filing/0001193125-21-273619.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/11544/000119312521273619/0001193125-21-273619-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/11544/000119312521273619/d225177d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-29T03:25:59.541043+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"}