ITUB 6-K 2026 - Equibles

	UNITED STATES
	SECURITIES AND EXCHANGE COMMISSION
	Washington, D.C. 20549
	FORM 6-K
	Report of Foreign Issuer<br>Pursuant to Rule 13a-16 or 15d-16<br>of the Securities Exchange Act of 1934
	For the month of March, 2026
	Comission 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)

Praça Alfredo Egydio de Souza Aranha, 100 - Torre Conceição
	CEP 04344-902 São Paulo, SP, Brazil<br>(Address of principal executive office)
Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.
	Form 20-F ☒	Form 40-F ☐
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):
	Yes ☐	No ☒
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):
	Yes ☐	No ☒
Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.
	Yes ☐	No ☒
If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b):
	82– __________________

EXHIBIT INDEX

99.1	ITAÚ UNIBANCO - Summarized Minutes of the Meeting of the Fiscal Council of February 23, 2026

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
Date: March 27, 2026.
Itaú Unibanco Holding S.A.<br><br>By: /s/ Gustavo Lopes Rodrigues<br><br>Name: Gustavo Lopes Rodrigues<br><br>Title: Investor Relations Officer.

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Summarized Minutes of the Meeting of the Fiscal Council DATE AND TIME: On February 23, 2026, at 4:30 p.m. Chair: Gilberto Frussa. QUORUM: The totality of the elected members, with the participation of the Councilors as permitted by item 4.6 of the Internal Charter of the Fiscal Council. RESOLUTIONS UNANIMOUSLY ADOPTED: 1. The members of the Fiscal Council met to review and provide their opinions on the following proposals to be submitted to the Company’s Extraordinary General Meeting: 1.1. To resolve on the “Protocol and Justification” setting forth the terms and conditions for the merger of Banco Itaucard S.A. (“Itaucard”) into the Company, with a base date of December 31, 2025 ( “Transaction”); 1.2. To ratify the appointment and engagement of PricewaterhouseCoopers Auditores Independentes – PwC as the specialized firm responsible for preparing the appraisal report on the book equity of Itaucard to be merged into the Company (“Appraisal Report”); 1.3. To resolve on the Appraisal Report, based on Itaucard’s balance sheet as of December 31, 2025; and 1.4. To resolve on the Transaction, without an increase in the Company’s capital stock. 2. After reviewing and discussing the proposals, the Board members resolved to issue the following opinion: “Having completed their review of the documents pertaining to the proposals to be submitted to the Extraordinary General Meeting, the regular members of the Fiscal Council of ITAÚ UNIBANCO HOLDING S.A. are of the opinion that these documents accurately reflect the Company’s financial position and financial condition,

Summarized Minutes of the Meeting of the Fiscal Council and that the merger of Banco Itaucard S.A. by the Company, as well as its legal implications, legitimately represent the interests of the Company’s shareholders, in compliance with applicable legal and statutory rules and procedures.” Closing: Once the work was completed, these minutes were signed after being drafted, read and approved by all. São Paulo (SP), February 23, 2026. (undersigned) Gilberto Frussa – Chairman of the Fiscal Council; Eduardo Hiroyuki Miyaki and Marcelo Maia Tavares de Araújo – Councilors. Gustavo Lopes Rodrigues Investor Relations Officer