Extraordinary General Stockholders’ Meeng Final Summarized Voting Map According to CVM Resolution No. 81/22, Itaú Unibanco Holding S.A. ("Company") discloses the final summarized voting map related to the consolidation of remote voting instructions and of the votes casted at the Extraordinary General Stockholders’ Meeting (“Meeting”), held exclusively online, on April 28, 2026, at 11:10 a.m, as presented below. São Paulo - SP, April 28, 2026. Gustavo Lopes Rodrigues Investor Relations Officer

Item Description Voting Number of shares % over total voting Approve 5,184,044,233 100.00% Reject 2,156 0.00% Abstain 125,025 0.00% Approve 5,184,042,488 100.00% Reject 3,102 0.00% Abstain 125,824 0.00% Approve 5,184,041,930 100.00% 3 Reject 10,196 0.00% Abstain 119,288 0.00% Approve 5,184,043,513 100.00% 4 Reject 10,207 0.00% Abstain 117,694 0.00% Approve 5,184,042,312 100.00% 5 Reject 10,072 0.00% Abstain 119,030 0.00% Approve 5,184,050,399 100.00% 6 Reject 10,346 0.00% Abstain 110,669 0.00% Approve 5,184,036,820 100.00% Reject 14,118 0.00% Abstain 120,476 0.00% Approve 5,184,050,618 100.00% Reject 1,349 0.00% Abstain 119,447 0.00% Consolidate the Bylaws to reflect the amendments mentioned in the preceding items:8 Amend the wording of item 9.1 of Article 9 of the Bylaws to modify the maximum number of members of the Board of Officers, so that it is now composed of five (5) to sixty (60) members: 7 2 Ratify the appointment and engagement of PricewaterhouseCoopers Auditores Independentes Ltda. - PwC as the specialized firm responsible for preparing the Appraisal Report on the book net worth of Banco Itaucard S.A. to be merged into the Company: Resolve upon the Appraisal Report, based on the balance sheet of Banco Itaucard S.A. as of December 31, 2025: Resolve upon the merger of Banco Itaucard S.A. into the Company, with no increase in the Companys capital stock, in accordance with the Protocol and Justification: Authorize the Companys management members, as provided for in its Bylaws, to perform all acts and sign all documents required for the implementation and formalization of the approved resolutions: Amend the wording of Article 3, caput, of the Bylaws, to reflect the new composition of the subscribed and paid-in capital, as resolved by the Board of Directors on November 27, 2025 and December 18, 2025 regarding the cancellation of shares and capital increase within the limit of the authorized capital: Final Summarized Voting Map 1 Resolve upon the “Protocol and Justification” which establishes the terms and conditions for the merger of Banco Itaucard S.A. into the Company, with the base date of December 31, 2025: