{"filing":{"accession_number":"0001193125-26-390052","cik":"0001335730","ticker":"MZHOF","company_name":"MIZUHO FINANCIAL GROUP INC","form":"6-K","filing_date":"2026-09-14","report_date":"2026-09-14","primary_document":"d184402d6k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1335730/000119312526390052/d184402d6k.htm"},"events":[{"id":33211,"run_id":30531,"accession_number":"0001193125-26-390052","anchor_item_number":null,"event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.85,"summary":"The 6-K furnishes a Perpetual Subordinated Indenture dated September 14, 2026 between Mizuho Financial Group and The Bank of New York Mellon, along with the form of Fixed Rate Resetting Perpetual Subordinated Security and related legal opinions. This constitutes creation of a new direct financial obligation — issuance of perpetual subordinated debt securities — which is a material capital event for a major financial institution.","company_name":"MIZUHO FINANCIAL GROUP INC","ticker":"MZHOF","filing_date":"2026-09-14","form":"6-K","submitted_at":null,"items":null}],"classifications":[{"id":36596,"accession_number":"0001193125-26-390052","item_number":null,"item_title":null,"event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.85,"reasoning":"The 6-K furnishes a Perpetual Subordinated Indenture dated September 14, 2026 between Mizuho Financial Group and The Bank of New York Mellon, along with the form of Fixed Rate Resetting Perpetual Subordinated Security and related legal opinions. This constitutes creation of a new direct financial obligation — issuance of perpetual subordinated debt securities — which is a material capital event for a major financial institution.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-09-14T15:25:38.332917+00:00","company_name":"MIZUHO FINANCIAL GROUP INC","ticker":"MZHOF","filing_date":"2026-09-14"}]}