Exhibit 99.1

ITAÚ UNIBANCO HOLDING S.A. CNPJ. 60.872.504/0001-23 A Publicly Listed Company EXTRAORDINARY GENERAL STOCKHOLDERS’ MEETING Consolidated summarized remote voting map According to CVM Instruction No 481/09, Itaú Unibanco Holding S.A. (“Company”) discloses the summarized voting map that consolidates the voting instructions received from the underwriter and the voting instructions directly received by the Company for each item presented in the remote voting form on the matters submitted for the resolution of the Extraordinary General Stockholders’ Meeting to be exclusively held online on September 30, 2022, 11:00 a.m., with the purpose to: Item Description Voting Number of shares % over total voting 1 Resolve on the “Protocol and Justification” which establishes the terms and conditions of the partial spin-off of Banco Itaucard S.A. with the merger with and into the Company of the spun-off portion, considering the period ended as of June 30, 2022: Approve 4,557,273,366 99.99810 Reject 0 0.00000 Abstain 86,500 0.00190 2 Ratify the appointment and engagement of PricewaterhouseCoopers Auditores Independentes Limited (PwC) as the specialized company responsible for the preparation of the appraisal report on the net book equity of Banco Itaucard S.A.’s to be merged with and into the Company: Approve 4,557,273,366 99.99810 Reject 0 0.00000 Abstain 86,500 0.00190 3 Resolve on the appraisal report, based on the balance sheet of Banco Itaucard S.A. as of June 30, 2022: Approve 4,557,273,366 99.99810 Reject 0 0.00000 Abstain 86,500 0.00190 4 Resolve on the merger of the spun-off portion of Banco Itaucard S.A. and its merger with and into the Company, without increasing the Company’s capital stock: Approve 4,557,273,366 99.99810 Reject 0 0.00000 Abstain 86,500 0.00190 5 Authorize the Company’s managers, as provided for in its Bylaws, to take all actions and sign all documents necessary to implement and formalize the resolutions: Approve 4,557,273,366 99.99810 Reject 0 0.00000 Abstain 86,500 0.00190 6 Amend the Bylaws, notably Article 2 thereof, to update the Company’s corporate purpose in light of the merger of the spun-off portion of Banco Itaucard S.A. and the consequent absorption of its activities: Approve 4,557,273,366 99.99810 Reject 0 0.00000 Abstain 86,500 0.00190 7 Amend the Bylaws, notably Article 9, in item 91. changing the maximum number of members of the Executive Board, from 05 (five) to 35 (thirty-five) members: Approve 4,557,273,366 99.99810 Reject 0 0.00000 Abstain 86,500 0.00190 8 Consolidate the Bylaws to reflect the amendment mentioned in the previous items: Approve 4,557,273,366 99.99810 Reject 0 0.00000 Abstain 86,500 0.00190 São Paulo-SP, September 29, 2022. RENATO LULIA JACOB Group Head of Investor Relations and Market Intelligence