{"filing":{"accession_number":"0000947484-26-000090","cik":"0000947484","ticker":"ACGLO","company_name":"ARCH CAPITAL GROUP LTD.","form":"8-K","filing_date":"2026-06-03","report_date":null,"primary_document":"acgl-20260602.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/947484/000094748426000090/acgl-20260602.htm"},"events":[{"id":7063,"run_id":6197,"accession_number":"0000947484-26-000090","anchor_item_number":"1.01","event_type":"other_material","event_domain":"catchall","is_material":true,"confidence":0.75,"summary":"Arch Capital entered into an underwriting agreement to issue $2.0 billion in senior notes, consisting of $600 million due 2036 at 5.250% and $1.4 billion due 2056 at 5.950%. The offering was priced on June 2, 2026, representing a material debt financing event affecting the company's capital structure and financial obligations.","company_name":"ARCH CAPITAL GROUP LTD.","ticker":"ACGLO","filing_date":"2026-06-03","form":"8-K","submitted_at":null,"items":[{"id":3833,"accession_number":"0000947484-26-000090","item_number":"1.01","item_title":"Entry into a Material Definitive Agreement.","event_type":"other_material","event_domain":"catchall","is_material":true,"confidence":0.75,"reasoning":"Arch Capital entered into an underwriting agreement to issue $2.0 billion in senior notes ($600M due 2036 at 5.250% and $1.4B due 2056 at 5.950%). While this is a material debt issuance affecting the registrant's capital structure and financial obligations, it does not fit cleanly into the dilutive_issuance category (which focuses on equity) or ma_activity (which concerns acquisitions/dispositions). This is a significant financing event material to investors but best classified as other_material given the taxonomy's equity-focused definitions.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-06-04T02:15:31.480794+00:00","company_name":"","ticker":null,"filing_date":""},{"id":3834,"accession_number":"0000947484-26-000090","item_number":"8.01","item_title":"Other Events.","event_type":"other_material","event_domain":"catchall","is_material":true,"confidence":0.72,"reasoning":"ACGL announced pricing of an underwritten public offering of Notes on June 2, 2026. This is a material capital-raising event that would affect investor assessment of the company's financing activities and capital structure. While the disclosure does not fit neatly into the dilutive_issuance category (which typically applies to equity securities), a debt offering of sufficient size disclosed via 8-K Item 8.01 represents a material financing event warranting classification as other_material.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-06-04T02:15:31.480794+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":3833,"accession_number":"0000947484-26-000090","item_number":"1.01","item_title":"Entry into a Material Definitive Agreement.","event_type":"other_material","event_domain":"catchall","is_material":true,"confidence":0.75,"reasoning":"Arch Capital entered into an underwriting agreement to issue $2.0 billion in senior notes ($600M due 2036 at 5.250% and $1.4B due 2056 at 5.950%). While this is a material debt issuance affecting the registrant's capital structure and financial obligations, it does not fit cleanly into the dilutive_issuance category (which focuses on equity) or ma_activity (which concerns acquisitions/dispositions). This is a significant financing event material to investors but best classified as other_material given the taxonomy's equity-focused definitions.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-06-04T02:15:31.480794+00:00","company_name":"ARCH CAPITAL GROUP LTD.","ticker":"ACGLO","filing_date":"2026-06-03"},{"id":3834,"accession_number":"0000947484-26-000090","item_number":"8.01","item_title":"Other Events.","event_type":"other_material","event_domain":"catchall","is_material":true,"confidence":0.72,"reasoning":"ACGL announced pricing of an underwritten public offering of Notes on June 2, 2026. This is a material capital-raising event that would affect investor assessment of the company's financing activities and capital structure. While the disclosure does not fit neatly into the dilutive_issuance category (which typically applies to equity securities), a debt offering of sufficient size disclosed via 8-K Item 8.01 represents a material financing event warranting classification as other_material.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-06-04T02:15:31.480794+00:00","company_name":"ARCH CAPITAL GROUP LTD.","ticker":"ACGLO","filing_date":"2026-06-03"}]}