Itaú Unibanco (NYSE: ITUB) sets interest on capital payout

Rhea-AI Filing Summary

Itaú Unibanco Holding S.A. reported that its Board of Directors approved the payment of interest on capital to stockholders, subject to confirmation by the General Stockholders’ Meeting. The approved gross amount is R$ 0.34888 per share, with a 17.5% income tax withholding, resulting in net interest of R$ 0.287826 per share for eligible holders.

The interest will be credited on March 27, 2026, to stockholders of record on March 19, 2026, and shares will trade ex-rights starting March 20, 2025. Payment is expected to be made by August 31, 2026, following the company’s bylaws and remuneration policy.

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 February, 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 (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 Board of Directors of February 26, 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: February 26, 2026.

Itaú Unibanco Holding S.A.

By: /s/ Gustavo Lopes Rodrigues

Name: Gustavo Lopes Rodrigues

Title: Investor Relations Officer.

Corporativo | Interno Summarized Minutes of the Meeting of the Board of Directors DATE AND TIME: On February 26, 2026, at 09:00 a.m. CHAIR: Pedro Moreira Salles and Roberto Egydio Setubal – Co-chairmen. QUORUM: The majority of the members elected, with the participation of Board members as permitted by item 6.7.1. of the Bylaws. RESOLUTIONS UNANIMOUSLY ADOPTED: Once the meeting started, the Board members resolved on the payment of interest on capital to stockholders, “ad referendum” of the General Stockholders’ Meeting, and in accordance with sub item 6.8, X of the Company’s Bylaws and Stockholder Remuneration Policy, in the amount of R$ 0. 34888 per share, with income tax withholding at a rate of 17,5%, resulting in net interest of R$ 0.287826 per share, except for the corporate stockholders able to prove that they are immune to or exempt from such withholding, which will be made until August 31, 2026. Interest will be recorded as credit to the specific account on March 27, 2026, based on the final stockholding position recorded on March 19, 2026, with their shares traded ex-rights starting March 20, 2025. CLOSING: Once the work was completed, Álvaro Felipe Rizzi Rodrigues, secretary to the Board, drafted this minute, which, after being read and approved by all, was signed. São Paulo (SP), February 26, 2026. (undersigned) Pedro Moreira Salles and Roberto Egydio Setubal – Co-Chairmen; Ricardo Villela Marino – Vice-Chairman; Alfredo Egydio Setubal, Ana Lúcia de Mattos Barretto Villela, Candido Botelho Bracher, Cesar Nivaldo Gon, João Moreira Salles, Marcos Marinho Lutz, Maria Helena dos Santos Fernandes de Santana, Paulo Antunes Veras and Pedro Luiz Bodin de Moraes – Board Members. GUSTAVO LOPES RODRIGUES Investor Relations Officer

FAQ

What did Itaú Unibanco (ITUB) approve in this Form 6-K?

Itaú Unibanco’s board approved the payment of interest on capital to stockholders, subject to the General Stockholders’ Meeting. This is a form of shareholder remuneration set under the company’s bylaws and remuneration policy, with specific per-share amounts and key dates disclosed.

How much interest on capital per share will Itaú Unibanco (ITUB) pay?

The board approved gross interest on capital of R$ 0.34888 per share. After a 17.5% income tax withholding, the net amount payable is R$ 0.287826 per share to stockholders who are not immune or exempt from withholding tax.

When will Itaú Unibanco (ITUB) pay the approved interest on capital?

The payment of interest on capital is expected to be made by August 31, 2026. This timing reflects the board’s resolution and will follow confirmation by the General Stockholders’ Meeting, in line with the company’s shareholder remuneration practices.

What is the record date for Itaú Unibanco (ITUB) interest on capital?

The record date for entitlement to this interest on capital is March 19, 2026. Stockholders on record that day will be eligible, and the corresponding shares are scheduled to trade ex-rights starting March 20, 2025, as stated in the resolution.

When will Itaú Unibanco (ITUB) credit the interest on capital to stockholders?

The interest on capital will be recorded as a credit to a specific account on March 27, 2026. This credit will be based on the final stockholding position as of March 19, 2026, reflecting the approved shareholder remuneration terms.

How is tax handled on Itaú Unibanco (ITUB) interest on capital?

A 17.5% income tax withholding applies to the gross interest of R$ 0.34888 per share, leaving net interest of R$ 0.287826 per share. Corporate stockholders that prove they are immune or exempt from withholding will not be subject to this deduction.

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