{"filing":{"accession_number":"0001132597-26-000230","cik":"0001132597","ticker":"ITUB","company_name":"Itau Unibanco Holding S.A.","form":"6-K","filing_date":"2026-09-11","report_date":"2026-09-10","primary_document":"a6-k_itubx09102026.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1132597/000113259726000230/a6-k_itubx09102026.htm"},"events":[{"id":32866,"run_id":30213,"accession_number":"0001132597-26-000230","anchor_item_number":"EX-99.1","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.95,"summary":"Itaú Unibanco announced the issuance of R$5.0 billion in Tier 2 Subordinated Financial Bills with maturity in 2036–2037 and a repurchase option from 2031. This constitutes creation of a new direct financial obligation under Item 2.03 (debt issuance). The material size (R$5 billion), regulatory capital treatment (Tier 2 capital composition), and impact on capital ratios (30 basis points) make this a material disclosure affecting the registrant's financial position and leverage profile.","company_name":"Itau Unibanco Holding S.A.","ticker":"ITUB","filing_date":"2026-09-11","form":"6-K","submitted_at":null,"items":[{"id":36153,"accession_number":"0001132597-26-000230","item_number":"EX-99.1","item_title":"announcementtothemarket_.htm","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.95,"reasoning":"Itaú Unibanco announced the issuance of R$5.0 billion in Tier 2 Subordinated Financial Bills with maturity in 2036–2037 and a repurchase option from 2031. This constitutes creation of a new direct financial obligation under Item 2.03 (debt issuance). The material size (R$5 billion), regulatory capital treatment (Tier 2 capital composition), and impact on capital ratios (30 basis points) make this a material disclosure affecting the registrant's financial position and leverage profile.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-09-11T13:38:42.637628+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":36153,"accession_number":"0001132597-26-000230","item_number":"EX-99.1","item_title":"announcementtothemarket_.htm","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.95,"reasoning":"Itaú Unibanco announced the issuance of R$5.0 billion in Tier 2 Subordinated Financial Bills with maturity in 2036–2037 and a repurchase option from 2031. This constitutes creation of a new direct financial obligation under Item 2.03 (debt issuance). The material size (R$5 billion), regulatory capital treatment (Tier 2 capital composition), and impact on capital ratios (30 basis points) make this a material disclosure affecting the registrant's financial position and leverage profile.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-09-11T13:38:42.637628+00:00","company_name":"Itau Unibanco Holding S.A.","ticker":"ITUB","filing_date":"2026-09-11"}]}