艾涛巴西联合银行 2026年年度报告和过渡报告

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ☐REGISTRATION STATEMENT PURSUANTTO SECTION 12(b) OR (g) OF THESECURITIES EXCHANGE ACT OF 1934 OR ☒ANNUAL REPORT PURSUANT TOSECTION 13 OR 15(d) OF THESECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 OR ☐TRANSITION REPORT PURSUANT TOSECTION 13 OR 15(d) OF THE SECURITIESEXCHANGE ACT OF 1934 OR ☐SHELL COMPANY REPORT PURSUANT TOSECTION 13 OR 15(d) OF THE SECURITIESEXCHANGE ACT OF 1934 Commission File Number 001-15276 Itaú Unibanco Holding S.A.(Exact Name of Registrant as Specified in its Charter) Itaú Unibanco Holding S.A. (Translation of Registrant’s name into English) THE FEDERATIVE REPUBLIC OF BRAZIL(Jurisdiction of incorporation or organization) Gustavo Lopes RodriguesInvestor Relations OfficerPhone: +55 11 2794 3547ri@itau-unibanco.com.brPraça Alfredo Egydio de Souza Aranha, 100 04344-902 São Paulo, SP, Brazil(Name, Telephone, E-mail and/or Facsimile number and Address of Company Contact Person) *Not for trading purposes, but only in connection with the listing on the New York Stock Exchange of American Depositary Sharesrepresenting those Preferred Shares. Securities registered or to be registered pursuant to Section 12(g) of the Act: None Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act: None Indicate the number of outstanding shares of each of the issuer’s classes of capital or common stock as of the period covered bythe annual report: 5,617,742,977 Common Shares, no par value per share 5,408,781,553 Preferred Shares, no par value per share Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act ☒Yes☐No If this annual report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant toSection 13 or 15(d) of the Securities Exchange Act of 1934. ☐Yes☒No Note—Checking the box above will not relieve any registrant required to file reports pursuant to Section 13 or 15(d) of the SecuritiesExchange Act of 1934 from their obligations under those Sections. Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the SecuritiesExchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports),and (2) has been subject to such filing requirements for the past 90 days. ☒Yes☐No Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submittedpursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that theregistrant was required to submit such files). ☒Yes☐No Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or an emerginggrowth company. See definition of “large accelerated filer,” “accelerated filer,” and “emerging growth company” in Rule 12b-2 of theExchange Act. ☒Large Accelerated filer☐Accelerated filer☐Non-accelerated filer☐Emerging growth company If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if theregistrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards†provided pursuant to Section 13(a) of the Exchange Act.☐ † The term “new or revised financial accounting standard” refers to any update issued by the Financial Accounting Standards Board toits Accounting Standards Codification after April 5, 2012. Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectivenessof its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registeredpublic accounting firm that prepared or issued its audit report.☒ If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of theregistrant included in the filing reflect the correction of an error to previously issued financial statements.☐ Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-basedcompensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b).☐ ☐U.S. GAAP☒International Financial Reporting Standards as issued by theInternational Accounting Standards Board☐Other If “Other” has been checked in response to the previous question, indicate by check mark which financial statement item the registranthas elected to follow: Item 17☐Item 18☐ ☐Yes☒No Auditor Name: PricewaterhouseCoopersAuditores Independentes Ltda. Table of Contents TABLE OF CONTENTS Certain Terms and ConventionsForwa