6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Issuer

Pursuant to Rule 13a-16 or 15d-16

of the Securities Exchange Act of 1934

For the month of May, 2024

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)

Praça Alfredo Egydio de Souza Aranha, 100-Torre Conceicao

CEP 04344-902 São Paulo, SP, Brazil

(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 - ANNOUNCEMENT TO THE MARKET - ITAÚ UNIBANCO HOLDING S.A. – FIRST QUARTER 2024 RESULT

SIGNATURES

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: May 7, 2024.

Itaú Unibanco Holding S.A.
By:	/s/ Renato Lulia Jacob
Name:	Renato Lulia Jacob
Title:	Group Head of Corporate Strategy, Investor Relations and Corporate
By:	/s/ Alexsandro Broedel
Name:	Alexsandro Broedel
Title:	Chief Financial Officer

EX-99.1

ITAÚ UNIBANCO HOLDING S.A. CNPJ 60.872.504/0001-23 A Publicly-Listed Company NIRE 35300010230 ANNOUNCEMENT TO THE MARKET Itaú Unibanco Holding S.A. 1st Quarter 2024 Result Itaú Unibanco Holding S.A. (“Company”) announces to its shareholders and the market at large that the Complete Financial Statements and the Management Discussion and Analysis for the 1st quarter of 2024 ending March 31, 2024, are already available on the Investor Relations website (www.itau.com.br/investor-relations). Additionally, we forward the information described below: • Press Presentation on the quarterly result, scheduled for 05/07/2024 at 08:00 a.m. (EDT) (Attachment 01); • Presentation of the virtual meeting on the quarterly result, scheduled for Tuesday, 05/07/2024 at 09:00 a.m. (EDT) (Attachment 02); • Institutional Presentation of the 1st quarter of 2024 (Attachment 03). The expectations and tendencies presented are based on information available up to the moment and involve risks, uncertainties, and assumptions that may be beyond our control. These information’s strengthen our commitment to transparency in our disclosures to the many strategic audiences we have. São Paulo ‐ SP, May 07, 2024. Renato Lulia Jacob Group Head of Corporate Strategy, Investor Relations and Corporate Development