{"filing":{"accession_number":"0000947484-26-000094","cik":"0000947484","ticker":"ACGLO","company_name":"ARCH CAPITAL GROUP LTD.","form":"8-K","filing_date":"2026-06-03","report_date":null,"primary_document":"acgl-20260603.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/947484/000094748426000094/acgl-20260603.htm"},"events":[{"id":2998,"run_id":2612,"accession_number":"0000947484-26-000094","anchor_item_number":"5.02","event_type":"exec_departure","event_domain":"governance","is_material":true,"confidence":0.75,"summary":"David Gansberg stepped down from his role as President of Arch Capital Group effective immediately, departing the Company following a distinguished tenure. Maamoun Rajeh's role was expanded to assume additional responsibilities.","company_name":"ARCH CAPITAL GROUP LTD.","ticker":"ACGLO","filing_date":"2026-06-03","items":[{"id":3835,"accession_number":"0000947484-26-000094","item_number":"5.02","item_title":"Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.","event_type":"exec_departure","event_domain":"governance","is_material":true,"confidence":0.75,"reasoning":"David Gansberg is stepping down from his role as President of Arch Capital Group effective immediately and departing the Company following a distinguished tenure. While the filing also discloses Maamoun Rajeh's expanded role as President, the principal disclosed action centers on Gansberg's departure from a senior executive position overseeing the Global Insurance Group. The departure is material as it involves a named executive officer leaving the organization.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-06-04T02:15:37.143281+00:00","company_name":"","ticker":null,"filing_date":""},{"id":3836,"accession_number":"0000947484-26-000094","item_number":"7.01","item_title":"Regulation FD Disclosure","event_type":"other_material","event_domain":"catchall","is_material":false,"confidence":0.45,"reasoning":"This Item 7.01 disclosure is a boilerplate Regulation FD notice referencing a press release (Exhibit 99.1) announcing \"aforementioned events\" without specifying what those events are in the provided text. The section itself contains only standard safe-harbor language disclaiming Section 18 liability. Without visibility into the actual press release content or the preceding Items in the 8-K, the materiality and specific event type cannot be determined from this excerpt alone.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-06-04T02:15:37.143281+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":3835,"accession_number":"0000947484-26-000094","item_number":"5.02","item_title":"Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.","event_type":"exec_departure","event_domain":"governance","is_material":true,"confidence":0.75,"reasoning":"David Gansberg is stepping down from his role as President of Arch Capital Group effective immediately and departing the Company following a distinguished tenure. While the filing also discloses Maamoun Rajeh's expanded role as President, the principal disclosed action centers on Gansberg's departure from a senior executive position overseeing the Global Insurance Group. The departure is material as it involves a named executive officer leaving the organization.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-06-04T02:15:37.143281+00:00","company_name":"ARCH CAPITAL GROUP LTD.","ticker":"ACGLO","filing_date":"2026-06-03"},{"id":3836,"accession_number":"0000947484-26-000094","item_number":"7.01","item_title":"Regulation FD Disclosure","event_type":"other_material","event_domain":"catchall","is_material":false,"confidence":0.45,"reasoning":"This Item 7.01 disclosure is a boilerplate Regulation FD notice referencing a press release (Exhibit 99.1) announcing \"aforementioned events\" without specifying what those events are in the provided text. The section itself contains only standard safe-harbor language disclaiming Section 18 liability. Without visibility into the actual press release content or the preceding Items in the 8-K, the materiality and specific event type cannot be determined from this excerpt alone.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-06-04T02:15:37.143281+00:00","company_name":"ARCH CAPITAL GROUP LTD.","ticker":"ACGLO","filing_date":"2026-06-03"}]}