{"schema_version":"secwatch.filing_event.v1","accession":"0000947484-24-000099","form_type":"8-K","ticker":"ACGL","cik":"0000947484","company_name":"ARCH CAPITAL GROUP LTD.","filed_at":"2024-08-01T23:59:59+00:00","discovered_at":"2026-05-14T18:03:16.470419+00:00","generated_at":"2026-05-31T14:12:28.297727+00:00","sec_items":["1.01","2.01","7.01","9.01"],"event_type":"m_and_a","sentiment":"positive","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"Arch Capital completes $450M acquisition of Allianz's U.S. MidCorp and Entertainment insurance businesses","bullets":["Base purchase price $450M, plus assumed liabilities; closed August 1, 2024.","Nearly 500 former Allianz MidCorp and Entertainment employees join Arch.","Mark Lange appointed Chief Middle Market Executive to lead new units.","Deal originally announced April 5, 2024; amendment filed for clarifying changes.","Expands Arch Insurance's middle-market platform and offerings."],"urls":{"canonical":"https://secwatch.observer/filing/0000947484-24-000099","json":"https://secwatch.observer/filing/0000947484-24-000099.json","markdown":"https://secwatch.observer/filing/0000947484-24-000099.md","text":"https://secwatch.observer/filing/0000947484-24-000099.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/947484/000094748424000099/0000947484-24-000099-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/947484/000094748424000099/acgl-20240801.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-31T14:12:28.297727+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"}