# EDGAR Filing Document

**Accession Number:** 0001132597
**File Stem:** 0001292814-25-003198
**Filing Date:** 2025-9
**Character Count:** 5237
**Document Hash:** 59715c508e827e1dbf7575f8d12d9a03
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001292814-25-003198.hdr.sgml**: 20250902

**ACCESSION NUMBER**: 0001292814-25-003198

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 20

**CONFORMED PERIOD OF REPORT**: 20250930

**FILED AS OF DATE**: 20250902

**DATE AS OF CHANGE**: 20250902

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Itau Unibanco Holding S.A.
- **CENTRAL INDEX KEY:** 0001132597
- **STANDARD INDUSTRIAL CLASSIFICATION:** STATE COMMERCIAL BANKS [6022]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 000000000
- **STATE OF INCORPORATION:** D5
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-15276
- **FILM NUMBER:** 251283087

**BUSINESS ADDRESS:**
- **STREET 1:** PC. ALFREDO EGYDIO DE SOUZA ARANHA, 100
- **STREET 2:** TORRE AE, 3 ANDAR, CEP 04344-902
- **CITY:** SAO PAULO
- **STATE:** D5
- **ZIP:** 00000
- **BUSINESS PHONE:** 55-11-5019-1723

**MAIL ADDRESS:**
- **STREET 1:** PC. ALFREDO EGYDIO DE SOUZA ARANHA, 100
- **STREET 2:** TORRE AE, 3 ANDAR, CEP 04344-902
- **CITY:** SAO PAULO
- **STATE:** D5
- **ZIP:** 00000

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Itau Unibanco Banco Multiplo S.A.
- **DATE OF NAME CHANGE:** 20090226

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BANCO ITAU HOLDING FINANCEIRA S A
- **DATE OF NAME CHANGE:** 20030319

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BANCO ITAU SA
- **DATE OF NAME CHANGE:** 20010117

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**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

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**FORM 6-K** 

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**Report of Foreign Issuer** 

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

**of the Securities Exchange Act of 1934** 

**For the month of September, 2025** 

**Commission File Number: 001-15276** 

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## Itaú Unibanco Holding S.A.
**(Exact name of registrant as specified in its charter)** 

**(Translation of Registrant's Name into English)** 

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**Praça Alfredo Egydio de Souza Aranha, 100-Torre Conceicao** 

**CEP 04344-902 São Paulo, SP, Brazil** 

**(Address of principal executive office)** 

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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–<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>

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**EXHIBIT INDEX** 

**99.1** **[ITAÚ UNIBANCO - **ITAÚ DAY 2025**](ex99-1.htm)** 

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**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: September 2, 2025.

---

| | |
|:---|:---|
| **Itaú Unibanco Holding S.A.** | **Itaú Unibanco Holding S.A.** |
| By: | /s/ Gustavo Lopes Rodrigues |
| Name: | Gustavo Lopes Rodrigues |
| Title: | Investor Relations Officer. |

---

## Exhibit 99.1

Announcement to the MarketItaú Day 2025In compliance with Official Letter No. 7/2020-CVM/SEP, Itaú Unibanco Holding S.A. ("Company") announces to its shareholders and the market in general that the Company's executives will join the live event "Itaú Day 2025", about "The developments in our businesses and their impact on UX". Participants: Co-chairmen of the Board of Directors: Pedro Moreira Salles and Roberto Setubal Members of the Executive Committee: Milton Maluhy, André Rodrigues, Carlos Constantini, Carlos Vanzo, Flavio de Souza, Pedro Lorenzini, Gabriel Amado de Moura, José Vita, Matias Granata, Ricardo Guerra and Sergio Fajerman. Group Head of Corporate Strategy, Investor Relations and Corporate Development: Renato Lulia Jacob Investor Relations Officer: Gustavo Lopes Rodrigues Date and time: September 02, 2025, starting at 9 a.m. (Brasília time). The event will be on-line. Links to access: https://live.popcast.com.br/itauday2025/Default_eng.aspx https://www.itau.com.br/investor-relations/ https://www.youtube.com/BancoItau Additionally, we have attached the slides that will be presented at the event. São Paulo (SP), September 02, 2025. Gustavo Lopes Rodrigues Investor Relations Officer

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