Itaú Unibanco (ITUB) to pay BRL 3.85B in interest on capital

Rhea-AI Filing Summary

Itaú Unibanco Holding S.A. will pay interest on capital totaling BRL 3.85 billion to its stockholders. This corresponds to BRL 0.34888 per share, with income tax withholding at 17.5%, resulting in net interest of BRL 0.287826 per share for eligible investors.

The benefit applies equally to common (ITUB3) and preferred (ITUB4) shares. The calculation is based on stockholders’ final position on March 19, 2026, and shares will trade ex-rights from March 20, 2026. Payment will be made by August 31, 2026.

Insights

Latin American bank equity analyst

Itaú announces sizable 2026 interest-on-capital distribution.

Itaú Unibanco is distributing BRL 3.85 billion as interest on capital, a common Brazilian mechanism similar to dividends but with different tax treatment. The per-share gross amount is BRL 0.34888, with a net of BRL 0.287826 after a 17.5% withholding rate.

The record date is March 19, 2026, and shares trade ex-rights from March 20, 2026, which typically affects pricing around those dates. Payment is scheduled to occur by August 31, 2026, and applies equally to both common and preferred share classes.

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 - Material Fact - Payment of Interest on Capital

.

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.

Material Fact Payment of Interest on Capital Itaú Unibanco Holding S.A. informs its stockholders that its Board of Directors has approved, at the meeting held on this date, the payment of interest on capital to stockholders (“IoC”) in the amount of BRL3.85 billion, corresponding to BRL0.34888 per share, with income tax withholding at a rate of 17.5%, resulting in net interest of BRL0.287826 per share, except for the corporate stockholders able to prove that they are immune or exempt from such withholding, which will be made until August 31, 2026. The calculation will be based on the final stockholding position recorded on March 19, 2026, with their shares traded “ex-rights” starting March 20, 2026. The amounts paid per share as interest on capital are the same for common (ITUB3) and preferred (ITUB4) shares. For further information, please visit on www.itau.com.br/investor-relations as follows: Menu > Investor Services > Contact IR. São Paulo (SP), February 26, 2026. Gustavo Lopes Rodrigues Investor Relations Officer

FAQ

What is Itaú Unibanco (ITUB) paying as interest on capital?

Itaú Unibanco will pay interest on capital totaling BRL 3.85 billion, equal to BRL 0.34888 per share. After a 17.5% withholding tax, stockholders will receive net interest of BRL 0.287826 per share, subject to tax exemptions.

What are the key dates for Itaú Unibanco ITUB interest on capital?

The record date is March 19, 2026, determining which stockholders qualify. Itaú Unibanco shares trade ex-rights from March 20, 2026. The company states the interest on capital will be paid to eligible shareholders by August 31, 2026.

Which Itaú Unibanco (ITUB) shares receive the interest on capital?

The announced interest on capital applies equally to common shares (ITUB3) and preferred shares (ITUB4). Both share classes receive the same amounts per share, with the same gross BRL 0.34888 and net BRL 0.287826 values, subject to tax rules.

How is the tax on Itaú Unibanco interest on capital calculated?

The gross amount is BRL 0.34888 per share, and a 17.5% income tax is withheld, resulting in net interest of BRL 0.287826 per share. Corporate stockholders that prove they are immune or exempt are not subject to this withholding.

How can Itaú Unibanco (ITUB) investors get more information on this payment?

Investors can access details through Itaú Unibanco’s Investor Relations website at www.itau.com.br/investor-relations. The path indicated is Menu > Investor Services > Contact IR, where stockholders can request clarifications about the interest on capital payment.

Filing Exhibits & Attachments

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