# EDGAR Filing Document

**Accession Number:** 0001132597
**File Stem:** 0001132597-26-000011
**Filing Date:** 2026-1
**Character Count:** 63486
**Document Hash:** 8b4eff03986a0c4a3435276adc4429de
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001132597-26-000011.hdr.sgml**: 20260114

**ACCESSION NUMBER**: 0001132597-26-000011

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 28

**CONFORMED PERIOD OF REPORT**: 20260113

**FILED AS OF DATE**: 20260114

**DATE AS OF CHANGE**: 20260114

**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:** 26531664

**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** | **UNITED STATES** |
| **SECURITIES AND EXCHANGE COMMISSION** | **SECURITIES AND EXCHANGE COMMISSION** |
| **Washington, D.C. 20549** | **Washington, D.C. 20549** |
| **FORM 6-K** | **FORM 6-K** |
| &nbsp;&nbsp;**Report of Foreign Issuer<br>Pursuant to Rule 13a-16 or 15d-16<br>of the Securities Exchange Act of 1934** | &nbsp;&nbsp;**Report of Foreign Issuer<br>Pursuant to Rule 13a-16 or 15d-16<br>of the Securities Exchange Act of 1934** |
| &nbsp;&nbsp;**Report of Foreign Issuer<br>Pursuant to Rule 13a-16 or 15d-16<br>of the Securities Exchange Act of 1934** | &nbsp;&nbsp;**Report of Foreign Issuer<br>Pursuant to Rule 13a-16 or 15d-16<br>of the Securities Exchange Act of 1934** |
| &nbsp;&nbsp;**Report of Foreign Issuer<br>Pursuant to Rule 13a-16 or 15d-16<br>of the Securities Exchange Act of 1934** | &nbsp;&nbsp;**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 January, 2026** | **For the month of January, 2026** |
| **Comission File Number: 001-15276** | **Comission File Number: 001-15276** |
| **Itaú Unibanco Holding S.A.** | **Itaú Unibanco Holding S.A.** |
| (Exact name of registrant as specified in its charter) | (Exact name of registrant as specified in its charter) |
| **Itaú Unibanco Holding S.A.** | **Itaú Unibanco Holding S.A.** |
| (Translation of Registrant's Name into English) | (Translation of Registrant's Name into English) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Praça Alfredo Egydio de Souza Aranha, 100 - Torre Conceição** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Praça Alfredo Egydio de Souza Aranha, 100 - Torre Conceição** |
| &nbsp;&nbsp;&nbsp;**CEP 04344-902 São Paulo, SP, Brazil<br>(Address of principal executive office)** | &nbsp;&nbsp;&nbsp;**CEP 04344-902 São Paulo, SP, Brazil<br>(Address of principal executive office)** |
| &nbsp;&nbsp;&nbsp;**CEP 04344-902 São Paulo, SP, Brazil<br>(Address of principal executive office)** | &nbsp;&nbsp;&nbsp;**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. | 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 ☒ | &nbsp;&nbsp;&nbsp;&nbsp; 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): | 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 ☐ | &nbsp;&nbsp;&nbsp;&nbsp;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): | 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 ☐ | &nbsp;&nbsp;&nbsp;&nbsp;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. | 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 ☐ | &nbsp;&nbsp;&nbsp;&nbsp;No ☒ |
| If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): | If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): |
| 82– __________________ | 82– __________________ |

---

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**EXHIBIT INDEX**

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| | |
|:---|:---|
| **99.1** | <u>[ITAÚ UNIBANCO - REFERENCE FORM (V11)](referenceform-iuhsec.htm)</u> |

---

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.

---

| |
|:---|
| &nbsp;&nbsp;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. |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Date: January 13, 2026. |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Itaú Unibanco Holding S.A.**<br>By: /s/ Gustavo Lopes Rodrigues<br>Name: Gustavo Lopes Rodrigues<br>Title: Investor Relations Officer. |

---

## Exhibit 99.1

![](referenceform-iuhsec001.jpg)

2024 REFERENCE FORM 2024 Itaú Unibanco Holding S.A.

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![](referenceform-iuhsec002.jpg)

Itaú Unibanco Holding S.A. REFERENCE FORM Base Date: 12.31.2024 (in accordance with Attachment C to CVM Resolution No 80 of March 29, 2022 "CVM Resolution No 80") Identification ltaú Unibanco Holding S.A., a corporation enrolled under the National Register of Legal Entities/Ministry of Finance (CNPJ/MF) under No. 60.872.504/0001-23, with its Articles of lncorporation registered with the Trade Board of the State of São Paulo under NlRE No. 35.3.0001023-0, and registered as a publicly-held company with the Brazilian Securities and Exchange Commission ("CVM") under No. 19348 ("Bank" or "lssuer"). Head Office The lssuer's head office is located at Praça Alfredo Egydio de Souza Aranha, 100, Torre Olavo Setubal, Parque Jabaquara, in the City and State of São Paulo, Brazil, Zip Code 04344-902. Investor Relations Office The lnvestor Relations department is located at Praça Alfredo Egydio de Souza Aranha, 100, Torre Conceição, 12º andar, Parque Jabaquara, in the City and State of São Paulo, Brazil, Zip Code 04344-902. The Group Head of lnvestor Relations is Mr. Gustavo Lopes Rodrigues. The lnvestor Relations Department's telephone number is +5511 2794-3547, fax number is +55 11 5019-8717, and email is ri@itau-unibanco.com.br. lndependent Auditors Firm PricewaterhouseCoopers Auditores Independentes Ltda. for the years ended 12/31/2024, 12/31/2023 and 12/31/2022. Bookkeeping Agent Itaú Corretora de Valores S.A. Stockholders Service The lssuer's stockholders' service is carried out at the branches of ltaú Unibanco S.A., the head office of which is located at Praça Alfredo Egydio de Souza Aranha, 100, Torre Walther Moreira Salles, Parque Jabaquara, in the City and State of São Paulo, Brazil, Zip Code 04344-902. Newspapers from which the Company discloses lnformation O Estado de São Paulo newspaper. Website The information contained on the Company's website is not an integral part of this Reference Form. https://www.itau.com.br/relacoes-com-investidores/en/ Last update of this Reference Form 01/13/2026

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![](referenceform-iuhsec003.jpg)

Historical resubmission Version Reasons for resubmission Date of update V2 Updated items: 7.1D, 7.3, 7.4 and 7.8 06/11/2025 V3 Updated items: 7.3, 7.4 and 7.8 06/24/2025 V4 Updated items: 3.1, 3.2 and 8.1 08/05/2025 V5 Updated items 4.4, 4.5, 4.7 and 12.7 08/14/2025 V6 Updated items 7.4, 7.8 and 12.7 09/03/2025 V7 Updated items 7.4, 7.8 and 12.7 10/20/2025 V8 Updated items 3.1, 3.2, 7.3 and 7.8 11/04/2025 V9 Updated items 4.4, 4.5, 4.7, 6.1/6.2, 6.3, 6.4, 6.5, 6.6, 7.3, 7.8, 12.1 and 12.9 12/11/2025 V10 Updated items 6.3 and 6.5 12/11/2025 V11 Updated items 6.1/6.2, 6.3, 6.4, 6.5, 6.6, 12.1 and 12.9 01/13/2026

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![](referenceform-iuhsec004.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.1/6.2 - STOCKHOLDING POSITION BASE DATE 12.23.2025 Itaú Unibanco Holding S.A. Ordinary Shares % Preferrend Shares % Total % IUPAR - Itaú Unibanco Participações S.A. 2,905,107,629 51.713% 0 - 2,905,107,629 26.346% Nationality: Brasileira CNPJ (\*\*) 04.676.564/0001-08 Itaúsa S.A. 2,202,446,151 39.205% 191,842 0.004% 2,202,637,993 19.975% Nationality: Brasileira CNPJ (\*\*) 61.532.644/0001-15 BlackRock, INC 0 - 396,465,134 7.330% 396,465,134 3.595% Nationality: American CNPJ (\*\*) n/a GQG Partners LLC 0 - 274,551,229 5.076% 274,551,229 2.490% Nationality: American CNPJ (\*\*) n/a Treasury 0 0.000% 344,662 0.006% 344,662 0.003% Others 510,189,197 9.082% 4,737,573,348 87.585% 5,247,762,545 47.591% Total 5,617,742,977 100.000% 5,409,126,215 100.000% 11,026,869,192 100.000% (\*) Individual Taxpayer's Registry (CPF) (\*\*) National Register of Legal Entity (CNPJ) BASE DATE 12.31.2024 IUPAR - Itaú Unibanco Part. S.A. Ordinary Shares % Preferrend Shares % Total % Itaúsa S.A. 355,227,092 50.000% 350,942,273 100.000% 706,169,365 66.532% Nationality: Brasileira CNPJ (\*\*) 61.532.644/0001-15 Cia. E. Johnston de Participações 355,227,092 50.000% - - 355,227,092 33.468% Nationality: Brasileira CNPJ (\*\*) 04.679.283/0001-09 Total 710,454,184 100.000% 350,942,273 100.000% 1,061,396,457 100.000% BASE DATE 12.31.2024 Cia. E. Johnston de Part. Ordinary Shares % Preferrend Shares % Total % Fernando Roberto Moreira Salles 3,274,000 50.000% 6,548,000 50.000% 9,822,000 50.000% Nationality: Brasileira CPF (\*) 002.938.068-53 Pedro Moreira Salles 2,881,120 44.000% 5,762,240 44.000% 8,643,360 44.000% Nationality: Brasileira CPF (\*) 551.222.567-72 João Moreira Salles 392,880 6.000% 785,760 6.000% 1,178,640 6.000% Nationality: Brasileira CPF (\*) 295.520.008-58 Total 6,548,000 100.000% 13,096,000 100.000% 19,644,000 100.000%

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![](referenceform-iuhsec005.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;BASE DATE 12.23.2025 Itaúsa S.A. Ordinary Shares % Preferrend Shares % Total % Companhia ESA 35,050,756 0.910% 298,719 0.004% 35,349,475 0.315% Nationality: Brasileira CNPJ (\*\*) 52.117.397/0001-08 Fundação Itaú 438,596,084 11.381% 53,867,825 0.732% 492,463,909 4.392% Nationality: Brasileira CNPJ (\*\*) 59.573.030/0001-30 Fundação Antonio e Helena Zerrenner Instituição Nacional de Beneficência 593,462,239 15.400% 149,396,255 2.030% 742,858,494 6.625% Nationality: Brasileira CNPJ (\*\*) 60.480.480/0001-67 Rudric ITH Participações Ltda. 3,219,187 0.084% 2,551,497 0.035% 5,770,684 0.051% Nationality: Brasileira CNPJ (\*\*) 67.569.061/0001-45 Alfredo Egydio Arruda Villela Filho 492,999,776 12.793% 289,078,174 3.928% 782,077,950 6.974% Nationality: Brasileira CPF (\*) 066.530.838-88 Ana Lúcia de Mattos Barreto Villela 492,999,739 12.793% 269,681,709 3.664% 762,681,448 6.801% Nationality: Brasileira CPF (\*) 066.530.828-06 Ricardo Villela Marino 246,779,550 6.404% 191,366,662 2.600% 438,146,212 3.907% Nationality: Brasileira CPF (\*) 252.398.288-90 Rodolfo Villela Marino 246,852,799 6.406% 191,486,562 2.602% 438,339,361 3.909% Nationality: Brasileira CPF (\*) 271.943.018-81 Paulo Setubal Neto 42,120 0.001% 528,343 0.007% 570,463 0.005% Nationality: Brasileira CPF (\*) 638.097.888-72 Carolina Marinho Lutz Setubal 52,449,960 1.361% 18,008,601 0.245% 70,458,561 0.628% Nationality: Brasileira CPF (\*) 077.540.228-18 Julia Guidon Setubal 52,449,960 1.361% 18,008,601 0.245% 70,458,561 0.628% Nationality: Brasileira CPF (\*) 336.694.358-08 Paulo Egydio Setubal 52,449,960 1.361% 18,008,601 0.245% 70,458,561 0.628% Nationality: Brasileira CPF (\*) 336.694.318-10 Fernando Setubal Souza e Silva 28,524,188 0.740% 14,070,164 0.191% 42,594,352 0.380% Nationality: Brasileira CPF (\*) 311.798.878-59 Guilherme Setubal Souza e Silva 28,524,330 0.740% 13,074,976 0.178% 41,599,306 0.371% Nationality: Brasileira CPF (\*) 269.253.728-92 Tide Setubal Souza e Silva Nogueira 28,524,774 0.740% 14,833,716 0.202% 43,358,490 0.387% Nationality: Brasileira CPF (\*) 296.682.978-81 Olavo Egydio Setubal Júnior 13,984,686 0.363% 56,366,740 0.766% 70,351,426 0.627% Nationality: Brasileira CPF (\*) 006.447.048-29 Bruno Rizzo Setubal 41,778,726 1.084% 99,421 0.001% 41,878,147 0.373% Nationality: Brasileira CPF (\*) 299.133.368-56 Camila Setubal Lenz Cesar 41,778,727 1.084% 102,355 0.001% 41,881,082 0.373% Nationality: Brasileira CPF (\*) 350.572.098-41 Luiza Rizzo Setubal 41,778,732 1.084% 111,384 0.002% 41,890,116 0.374% Nationality: Brasileira CPF (\*) 323.461.948-40 Roberto Egydio Setubal 73,070,312 1.896% 27,816,498 0.378% 100,886,810 0.900% Nationality: Brasileira CPF (\*) 007.738.228-52 Mariana Lucas Setubal 32,854,161 0.853% 12,271,181 0.167% 45,125,342 0.402% Nationality: Brasileira CPF (\*) 227.809.998-10 Paula Lucas Setubal 32,854,161 0.853% 12,271,181 0.167% 45,125,342 0.402% Nationality: Brasileira CPF (\*) 295.243.528-69 José Luiz Egydio Setubal 111,187,793 2.885% 53,002,891 0.720% 164,190,684 1.464% Nationality: Brasileira CPF (\*) 011.785.508-18 Beatriz de Mattos Setubal 8,963,864 0.233% 399,182 0.005% 9,363,046 0.083% Nationality: Brasileira CPF (\*) 316.394.318-70 Gabriel de Mattos Setubal 8,963,864 0.233% 399,182 0.005% 9,363,046 0.083% Nationality: Brasileira CPF (\*) 348.338.808-73 Olavo Egydio Mutarelli Setubal 8,963,864 0.233% 399,182 0.005% 9,363,046 0.083% Nationality: Brasileira CPF (\*) 394.635.348-73 Alfredo Egydio Setubal 138,136,722 3.585% 55,231,252 0.750% 193,367,974 1.724% Nationality: Brasileira CPF (\*) 014.414.218-07 Alfredo Egydio Nugent Setubal 2,774 0.000% 281 0.000% 3,055 0.000% Nationality: Brasileira CPF (\*) 407.919.708-09 Marina Nugent Setubal 2,774 0.000% 281 0.000% 3,055 0.000% Nationality: Brasileira CPF (\*) 384.422.518-80 Ricardo Egydio Setubal 138,073,457 3.583% 55,736,969 0.757% 193,810,426 1.728% Nationality: Brasileira CPF (\*) 033.033.518-99 Marcelo Ribeiro do Valle Setubal 2,816 0.000% 389,358 0.005% 392,174 0.003% Nationality: Brasileira CPF (\*) 230.936.378-21 Rodrigo Ribeiro do Valle Setubal 2,816 0.000% 362,739 0.005% 365,555 0.003% Nationality: Brasileira CPF (\*) 230.936.298-02 Patricia Ribeiro do Valle Setubal 2,816 0.000% 389,358 0.005% 392,174 0.003% Nationality: Brasileira CPF (\*) 230.936.328-62 BlackRock, Inc 0 0.000% 368,270,970 5.004% 368,270,970 3.284% Nationality: American CNPJ (\*\*) n/a Treasury - - 2,340,311 0.032% 2,340,311 0.021% Others 368,305,525 9.557% 5,469,831,712 74.318% 5,838,137,237 52.063% Total 3,853,634,012 100.000% 7,360,052,833 100.000% 11,213,686,845 100.000%

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![](referenceform-iuhsec006.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;BASE DATE 09.11.2025 Companhia ESA Ordinary Shares % Total % Rudric ITH Participações Ltda. 3,156,066 0.133% 3,156,066 0.133% Nationality: Brasileira CNPJ (\*\*) 67.569.061/0001-45 Alfredo Egydio Arruda Villela Filho 483,333,114 20.387% 483,333,114 20.387% Nationality: Brasileira CPF (\*) 066.530.838-88 Ana Lúcia de Mattos Barreto Villela 483,333,078 20.387% 483,333,078 20.387% Nationality: Brasileira CPF (\*) 066.530.828-06 Ricardo Villela Marino 241,940,736 10.205% 241,940,736 10.205% Nationality: Brasileira CPF (\*) 252.398.288-90 Rodolfo Villela Marino 242,012,549 10.208% 242,012,549 10.208% Nationality: Brasileira CPF (\*) 271.943.018-81 Paulo Setubal Neto 41,295 0.002% 41,295 0.002% Nationality: Brasileira CPF (\*) 638.097.888-72 Carolina Marinho Lutz Setubal 51,421,530 2.169% 51,421,530 2.169% Nationality: Brasileira CPF (\*) 077.540.228-18 Julia Guidon Setubal Winandy 51,421,530 2.169% 51,421,530 2.169% Nationality: Brasileira CPF (\*) 336.694.358-08 Paulo Egydio Setubal 51,421,530 2.169% 51,421,530 2.169% Nationality: Brasileira CPF (\*) 336.694.318-10 Fernando Setubal Souza e Silva 27,964,891 1.180% 27,964,891 1.180% Nationality: Brasileira CPF (\*) 311.798.878-59 Guilherme Setubal Souza e Silva 27,965,030 1.180% 27,965,030 1.180% Nationality: Brasileira CPF (\*) 269.253.728-92 Tide Setubal Souza e Silva Nogueira 27,965,465 1.180% 27,965,465 1.180% Nationality: Brasileira CPF (\*) 296.682.978-81 Olavo Egydio Setubal Júnior 13,710,477 0.578% 13,710,477 0.578% Nationality: Brasileira CPF (\*) 006.447.048-29 Bruno Rizzo Setubal 40,959,536 1.728% 40,959,536 1.728% Nationality: Brasileira CPF (\*) 299.133.368-56 Camila Setubal Lenz Cesar 40,959,537 1.728% 40,959,537 1.728% Nationality: Brasileira CPF (\*) 350.572.098-41 Luiza Rizzo Setubal Kairalla 40,959,542 1.728% 40,959,542 1.728% Nationality: Brasileira CPF (\*) 323.461.948-40 Roberto Egydio Setubal 71,637,561 3.022% 71,637,561 3.022% Nationality: Brasileira CPF (\*) 007.738.228-52 Mariana Lucas Setubal 32,209,962 1.359% 32,209,962 1.359% Nationality: Brasileira CPF (\*) 227.809.998-10 Paula Lucas Setubal 32,209,962 1.359% 32,209,962 1.359% Nationality: Brasileira CPF (\*) 295.243.528-69 José Luiz Egydio Setubal 109,007,641 4.598% 109,007,641 4.598% Nationality: Brasileira CPF (\*) 011.785.508-18 Beatriz de Mattos Setubal 8,788,102 0.371% 8,788,102 0.371% Nationality: Brasileira CPF (\*) 316.394.318-70 Gabriel de Mattos Setubal 8,788,102 0.371% 8,788,102 0.371% Nationality: Brasileira CPF (\*) 348.338.808-73 Olavo Egydio Mutarelli Setubal 8,788,102 0.371% 8,788,102 0.371% Nationality: Brasileira CPF (\*) 394.635.348-73 Alfredo Egydio Setubal 135,428,159 5.712% 135,428,159 5.712% Nationality: Brasileira CPF (\*) 014.414.218-07 Alfredo Egydio Nugent Setubal 2,720 0.000% 2,720 0.000% Nationality: Brasileira CPF (\*) 407.919.708-09 Marina Nugent Setubal 2,720 0.000% 2,720 0.000% Nationality: Brasileira CPF (\*) 384.422.518-80 Ricardo Egydio Setubal 135,366,135 5.710% 135,366,135 5.710% Nationality: Brasileira CPF (\*) 033.033.518-99 Marcelo Ribeiro do Valle Setubal 2,761 0.000% 2,761 0.000% Nationality: Brasileira CPF (\*) 230.936.378-21 Patricia Ribeiro do Valle Setubal 2,761 0.000% 2,761 0.000% Nationality: Brasileira CPF (\*) 230.936.328-62 Rodrigo Ribeiro do Valle Setubal 2,761 0.000% 2,761 0.000% Nationality: Brasileira CPF (\*) 230.936.298-02 Total 2,370,803,355 100.000% 2,370,803,355 100.000%

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![](referenceform-iuhsec007.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;BASE DATE 12.31.2024 Rudric ITH Participações Ltda. Ordinary Shares % Total % Ricardo Villela Marino 37,507,724 50.000% 37,507,724 50.000% Nationality: Brasileira CPF (\*) 252.398.288-90 Rodolfo Villela Marino 37,507,724 50.000% 37,507,724 50.000% Nationality: Brasileira CPF (\*) 271.943.018-81 Total 75,015,448 100.000% 75,015,448 100.000%

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![](referenceform-iuhsec008.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.3. - Distribution of Capital Date of last general stockholders' meeting/ Date of last update 04/17/2025 Number of stockholders - individuals (units) 512,628 Number of stockholders - companies (units) 12,896 Number of institutional investors (units) 1,382 Outstanding shares Outstanding shares correspond to the lssuer's total shares, except for those held by the parent company, the people related to the latter, the lssuer's management members, and treasury shares. Number of common shares (units) 456,116,293 8.119% Number of preferred shares (units) 5,349,681,057 98.901% Total 5,805,797,350 52.651%

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.4. Relevant companies in which the issuer has an interest Social Denomination Corporate Taxpayer ID (CNPJ) Issuer´s participation (%) Banco Itaú Uruguay S.A. 11.929.613/0001-24 100.000000 Banco Itaucard S.A. 17.192.451/0001-70 100.000000 Itaú Chile Inversiones, Servicios Y Administracion S.A. 08.988.150/0001-67 99.999470 IGA Participações S.A. 04.238.150/0001-99 100.000000 Itaú Consultoria de Valores Mobiliários e Participações S.A. 58.851.775/0001-50 100.000000 Banco Itaú Chile 12.262.596/0001-87 26.299650 Itaú Corretora de Valores S.A. 61.194.353/0001-64 99.999990 Itaú Rent Administração e Participações Ltda. 02.180.133/0001-12 14.17270 Itaú Seguros S.A. 61.557.039/0001-07 0.000220 Itaú Unibanco S.A. 60.701.190/0001-04 100.000000 ITB Holding Brasil Participações Ltda. 04.274.016/0001-43 0.000001 Oca S.A. 08.988.128/0001-17 100.000000 Redecard Instituição de Pagamento S.A. 01.425.787/0001-04 19.378540 Itauseg Participações S.A. 07.256.507/0001-50 26.422550 Luizacred S.A. Soc. Crédito Financiamento Investimento 02.206.577/0001-80 50.000000 Itaú Unibanco Veículos Administradora de Consórcios Ltda. 42.421.776/0001-25 99.999990 Microinvest S.A. Sociedade de Crédito a Microempreendedor 05.076.239/0001-69 99.999990 Banco Itaú Veículos S.A. 61.190.658/0001-06 100.000000 Itauseg Saúde S.A. 04.463.083/0001-06 53.71873 Albarus S.A. 05.786.118/0001-00 1.751690 Itaú Administradora de Consórcios Ltda. 00.000.776/0001-01 0.001000 Itau BBA Assessoria Financeira S.A. 04.845.753/0001-59 99.950830 Itaú International Holding (Cayman) Ltd. 05.706.252/0001-54 100.000000 Base date: 12.23.2025

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6.5 Insert the issuer's shareholder organization chart and the economic group to which it belongs. indicating: a. all direct and indirect controlling shareholders and. if the issuer wishes. the shareholders with participation equal to or greater than 5% of a class or type of shares Itaú U nibanco Holdin g S.A. IU PAR - Itaú U nibanco Participações Itaúsa S.A. 39.21% ON 19.83% Total 51.71% ON 26.15% Total 50.00% ON 100.00% PN 66.53% Total Free Float (\*) Cia. E . Johnston de Participações 8.12% ON 98.90% PN 52.65% Total 50.00 % ON 33.47% Total Family Egydio de Souza Aranha Free Float (\*)Family Moreira Salles 100.00% Total 63.66% ON 17.89% PN 33.62% Total 36.07% ON 81.12% PN 65.64% Total Banco Itaucard S.A.Itaú U nibanco S.A. Itaú Consultoria de Valores Mobiliários e Participações S.A. OCA S.A. Itaú Corretora de Valores S.A. Itaú BBA Assessoria Financeira S.A. Banco Itaú Uruguay S.A. 100.00% Total 100.00% Total 100.00% ON 100.00% PN 100.00%Total 99.99% ON 100.00% PN 99.99%Total 100.00% ON 100.00% PN 100.00%Total 99.95% ON 99.95% PN 99.95%Total 100.00% ON 100.00% PN 100.00%Total Itaú Chile Inversiones, Servicios Y Administracion S.A. 99.99% Total Banco Itaú Chile 26.30% Total IGA Participações S.A. 100.00% ON 100.00% PN 100.00%Total Itauseg Saúde S.A. Itaú Rent Administração e Participações Ltda. 14.17%Total ITB Holding Brasil Participações Ltda Banco Itaú Veículos S.A. Itaú U nibanco Veículos Administradora de Consórcios Ltda. Itauseg Participações S.A. Microinvest S.A. Sociedade de Crédito a Microempreendedor 100.00% Total 99.99% Total 26.42% Total 99.99% Total Redecard Instituição de Pagamento S.A. 19.38% Total Luizacred S.A. Soc. Crédito Financiamento Invest imento 50.00% Total 53.72% Total 0.000001% Total Itaú Administradora de Consórcios Ltda. Itaú Seguros S.A. 0.00100% Total 0.00022% Total Albarus S.A. Itau BBA International Holdin g Cayman Ltd. 1.75% Total 100.00% Total Base date: 12.23.2025 (\*) percentage of shares representing the company's capital, except for those in treasury, held directly or indirectly by the controlling shareholder, by company officers and by persons related to them. ON = common shares PN = preferred shares

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Direct and indirect controlling stockholders Direct controlling stockholders Itaúsa S.A. IUPAR - Itaú Unibanco Participações S.A. lndirect controlling stockholders Alfredo Egydio Arruda Villela Filho Alfredo Egydio Nugent Setubal Alfredo Egydio Setubal Ana Lúcia de Mattos Barretto Villela Beatriz de Mattos Setubal Bruno Rizzo Setubal Camila Setubal Lenz Cesar Carolina Marinho Lutz Setubal Cia. E. Jonhston de Participações Companhia ESA Fernando Roberto Moreira Salles Fernando Setubal Souza e Silva Gabriel de Mattos Setubal Guilherme Setubal Souza e Silva João Moreira Salles José Luiz Egydio Setubal Julia Guidon Setubal Luiza Rizzo Setubal Marcelo Ribeiro do Valle Setubal Mariana Lucas Setubal Marina Nugent Setubal Olavo Egydio Setubal Júnior Olavo Egydio Mutarelli Setubal Patrícia Ribeiro do Valle Setubal Paula Lucas Setubal Paulo Egydio Setubal Paulo Setubal Neto Pedro Moreira Salles Ricardo Egydio Setubal Ricardo Villela Marino Roberto Egydio Setubal Rodolfo Villela Marino Rodrigo Ribeiro do Valle Setubal Rudric ITH Participações Ltda. Tide Setubal Souza e Silva Nogueira

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Subsidiary and affiliated companies c) Issuer's ownership interest in the group companies d) Group companies' ownership interest in the issuer e) Companies under common control Company Name Participation in the Voting Capital (%) Participation in the Share Capital (%) Controlled or Subsidiary In Brazil Itaú Unibanco S.A. 100.000000 100.000000 Subsidiary Redecard Instituição de Pagamento S.A. 19.378540 19.378540 Subsidiary Itaú Corretora de Valores S.A. 99.999997 99.999997 Subsidiary Itau BBA Assessoria Financeira S.A. 99.950832 99.950832 Subsidiary Itauseg Participações S.A. 26.422549 26.422549 Subsidiary IGA Participações S.A. 100.000000 100.000000 Subsidiary Itaú Consultoria de Valores Mobiliários e Participações S.A. 100.000000 100.000000 Subsidiary Luizacred S.A. Soc. Crédito Financiamento Investimento 50.000000 50.000000 Subsidiary Itauseg Saúde S.A. 53.718733 53.718733 Subsidiary Itaú Unibanco Veículos Administradora de Consórcios Ltda. 99.999999 99.999999 Subsidiary Itaú Rent Administração e Participações Ltda. 14.17270 14.17270 Subsidiary Microinvest S.A. Sociedade de Crédito a Microempreendedor 99.999999 99.999999 Subsidiary Banco Itaucard S.A. 100.000000 100.000000 Subsidiary Banco Itaú Veículos S.A. 100.000000 100.000000 Subsidiary Itaú Administradora de Consórcios Ltda. 0.001000 0.001000 Subsidiary Itaú Seguros S.A. 0.000220 0.000220 Subsidiary ITB Holding Brasil Participações Ltda. 0.000001 0.000001 Subsidiary Abroad Banco Itaú Chile 26.299648 26.299648 Subsidiary Banco Itaú Uruguay S.A. 100.000000 100.000000 Subsidiary Itaú Chile Inversiones. Servicios Y Administracion S.A. 99.999471 99.999471 Subsidiary Oca S.A. 100.000000 100.000000 Subsidiary Itau BBA International Cayman Ltd. (ex-Itau BBA International (Cayman) Ltd.) 100.000000 100.000000 Subsidiary Albarus S.A. 1.751688 1.751688 Subsidiary Base date: 12.23.2025

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.6. Supply other information that the issuer may deem relevant Additional information on items 6.1/6.2 a) Regarding the stockholding position of the stockholder BlackRock, Inc. ("BlackRock"), the Company informs that on March 3, 2011 it received the information, as provided for in Article 12 of CVM Resolution nº 44/2021, as amended by CVM Instruction nº 568/2015, that, as investment manager of some of its clients, BlackRock acquired 159,335,737 preferred shares issued by the Company. Taking into consideration the many corporate events that took place at the Company since the acquisition of this interest, we present below the changes in BlackRock's stockholding position, which represents 7.221% of the preferred shares and 3.569% of the total capital held by BlackRock. Statement of Changes in Blackrock's Stockholding Position Date Event Opening balance Event Closing balance 03/30/201 1 Opening balance at 03.30.2011, as provided by BlacKrocK (\*) 159,335,737 - 159,335,737 11/01/201 1 stock split/reverse split according to notice of 09.01.2011 159,335,737 159,335,700 159,335,700 04/19/201 3 10% Bonus Share (ASM of 04.19.2013) 159,335,700 15,933,570 175,269,270 06/11/201 4 10% Bonus Share (ASM of 04.23.2014) 175,269,270 17,526,927 192,796,197 07/31/201 5 10% Bonus Share (ASM of 04.29.2015) 192,796,197 19,279,620 212,075,817 10/21/201 6 10% Bonus Share (ASM of 09.14.2016) 212,075,817 21,207,581 233,283,398 11/26/201 8 stocK split/reverse split according to notice of 11.01.2018 (ASM of 07.27.2018) 233,283,398 116,641,699 349,925,097 03/17/202 5 10% Bonus Share (Board of Directors' meeting of 02.05.2025) 349,925,097 34,992,509 384,917,606 12/23/202 5 3% Bonus Share (Board of Directors' meeting of 12.18.2025) 384,917,606 11,547,528 396,465,134 (\*) Ownership interest at base date 08.19.2010 provided by the Stockholder on March 30, 2011 b) With regard to the shareholding position of the shareholder GQG Partners LLC, on January 18, 2022, the company received information, in accordance with Article 12 of CVM Resolution 44/2021, that GQG Partners LLC now holds 253,506,105 preferred shares issued by the Company. Taking into consideration the many corporate events that took place at the Company since the acquisition of this interest, we present below the changes in GQG Partners LLC stockholding

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position, which represents 5.001% of the preferred shares and 2.472% of the total capital held by GQG Partners LLC. Statement of Changes in GQG Partners LLC Stockholding Position Date Event Opening balance Event Closing balance 01/18/202 2 On 01/18/2022, according to correspondence from GQG Partners LLC (\*) 253,506,105 - 253,506,105 04/25/202 4 On 04/25/2024, according to correspondence from GQG Partners LLC (\*\*) 253,506,105 -14,600,821 238,905,284 08/29/202 4 On 08/29/2024, according to correspondence from GQG Partners LLC (\*\*\*) 238,905,284 3,417,072 242,322,356 03/17/202 5 10% bonus in shares (Board of Directors' meeting of 02.05.2025) 242,322,356 24,232,235 266,554,591 12/23/202 5 3% Bonus Share (Board of Directors' meeting of 12.18.2025) 266,554,591 7,996,638 274,551,229 (\*) Shareholding on the base date of 01/18/2022, provided by the shareholder on 01/18/2022. (\*\*) Shareholding on the base date of 04/25/2024, provided by the shareholder on 04/26/2024. (\*\*\*) Inserted in the Reference Form on 08/29/2024 due to a stake of more than 5%. c) On February 24, 2022, the capital of Cia. E. Johnston de Participações "EJ", previously distributed among the brothers Fernando Roberto Moreira Salles, Walther Moreira Salles Júnior, Pedro Moreira Salles and João Moreira Salles, was divided between Fernando Roberto Moreira Salles, holder of 50% of EJ's capital and Pedro Moreira Salles and his son, João Moreira Salles, holders, respectively, of 44% and 6% of EJ's capital. Pedro Moreira Salles and João Moreira Salles are also members of the Board of Directors of Itaú Unibanco Holding. The brothers Walther Moreira Salles Júnior and João Moreira Salles therefore ceased to be shareholders of EJ, transferring their respective holdings to the remaining shareholders, Fernando and Pedro, and to the new shareholder, João, in share purchase and sale transactions. There was no change in the stake held by EJ in the capital of IUPAR, parent company of Itaú Unibanco Holding. Control of IUPAR continues to be exercised in accordance with the shareholders' agreement in force and, consequently, the transactions described did not result in any change in the management or governance of Itaú Unibanco Holding. Additional information on item 6.3 The number of individual and corporate stockholders and institutional investors stated in item 6.3 of this Form refers to the April 17, 2025 base date. The number of outstanding shares reported in item 6.3 of this Form refers to the base date of December 23, 2025 and takes into account all shares issued by the company, excluding those owned by the controlling shareholder, administrators and related parties, as well as shares held in treasury.

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.1 Information on share capital 12/18/2025 n/a 136,909,898,070.00 5,617,742,977 5,409,126,215 11,026,869,192 12/18/2025 n/a 136,909,898,070.00 5,617,742,977 5,409,126,215 11,026,869,192 12/18/2025 n/a 136,909,898,070.00 5,617,742,977 5,409,126,215 11,026,869,192 07/27/2018 n/a 0.00 970,707,023 1,179,323,785 2,150,030,808 Date of authorization or approval Term for Payment Capital Value R$ Number of common shares Number of preferred shares Total number of shares Number of common shares Number of preferred shares Total number of shares Type of capital Authorized Capital Type of capital Paid up Capital Date of authorization or approval Term for Payment Capital Value R$ Date of authorization or approval Term for Payment Capital Value R$ Number of common shares Number of preferred shares Total number of shares Total number of shares Capital Issued Capital Value R$ Type of capital Subscribed Capital Date of authorization or approval Term for Payment Number of common shares Number of preferred shares Type of capital

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.9. Supply other information that the issuer may deem relevant Information from item 12.1 On February 5, 2025, the Company's Board of Directors deliberated to increase the social and paid-up capital within the limit of the authorized capital predicted on our Bylaws in the value of R$33,334,060,190.00 increasing it from R$90,729,000,000.00 to R$124,063,060,190.00. This increase was carried out through a share bonus, with the issuance of 980,413,535 new book- entry shares, with no par value, of which 495,829,036 are common shares and 484,584,499 are preferred shares, with the base date of this bonus being the shareholding position at the end of March 17, 2025. On November 27, 2025, the Company's Board of Directors resolved to approve the cancellation of 78,850,638 book-entry preferred shares held in treasury, which had been acquired by the Company through the share repurchase program authorized by this Board of Directors at its meeting on February 5, 2025, pursuant to CVM Resolution No. 77/22. As a result of this cancellation, the share capital in the amount of BRL 124,063,060,190.00 shall henceforth be represented by 10,705,698,245 book-entry shares without par value, of which 5,454,119,395 are common shares and 5,251,578,850 are preferred shares, and the corresponding amendment to the bylaws will be resolved at the next General Meeting of Shareholders. On December 18, 2025, the Company's Board of Directors resolved to increase the subscribed and paid-up share capital, within the limit of the authorized capital established by the Company's Bylaws, by R$12,846,837,880.00, raising it from R$124,063,060,190.00 to R$136,909,898,070.00. This capital increase (i) was fully paid in through the capitalization of the Company's Statutory Reserves, as recorded in the financial statements as of 12/31/2024; (ii) resulted in the issuance of 321,170,947 new book-entry shares, without par value, consisting of 163,623,582 common shares and 157,547,365 preferred shares, which were granted free of charge to the Company's shareholders as a share bonus, at a ratio of 3 (three) new shares of the same type for every 100 (one hundred) shares held, with treasury shares also receiving the bonus in the same proportion. Shareholders holding shares as of the close of business on 12/23/2025 in Brazil and 12/29/2025 in the United States were entitled to the bonus, and the new shares became tradable "ex" bonus rights as of 12/26/2025 in Brazil, with these new shares included in the shareholders' positions on 12/30/2025. As a result of the capitalization of reserves with a share bonus, the Company's Bylaws will be amended at the next General Meeting to record the new subscribed and paid-up share capital. Information from item 12.6 12.6. With respect to each type and class of security admitted for trading in foreign markets, please indicate:

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In the United States Our preferred shares have been traded on the NYSE, as ADSs (one ADS represents one preferred share) since February 21, 2002, in compliance with the NYSE and SEC requirements. These requirements include the disclosure of financial statements under the IFRS as of 2011, and compliance with U.S. legislation requirements, including the Securities Exchange Act of 1934 and the Sarbanes-Oxley Act of 2002. Our ADSs are issued by the JPMORGAN CHASE BANK, with principal executive office located at 383 Madison Avenue, 11thFloor, New York, New York 10179. ADS holders do not have the same rights as stockholders, which are governed by the Brazilian Corporate Law. The depositary is the holder of the preferred shares underlying the ADSs. ADS holders have ADS holder rights. Investors may hold ADSs directly, registered in their name, or indirectly, through a brokerage or other financial institution. ADS holders do not have the same rights as stockholders, depositaries and holders of the corresponding shares in Brazil. The deposit agreement sets forth the rights and obligations of ADS holders and is governed by New York legislation. In the event of a capital increase that maintains or increases the proportion of the capital represented by preferred shares, the ADS holders, except as described above, have the preemptive right to subscribe only to newly issued preferred shares. In the event of a capital increase that reduces the proportion of capital represented by the preferred shares, the ADS holders, except as described above, have the preemptive right to subscribe to preferred shares in proportion to their interests, and to common shares only up to the extent necessary to prevent the dilation of their interests. Information from item 12.7 12.7. Describe securities issued abroad, when relevant, indicating, if applicable: a) identification of the security, indicating the jurisdiction; ITUB (ADS - American Depositary Share) a. country United States of America b. market New York Stock Exchange c. administrative entity of the market in which the securities are admitted for trading U.S. Securities and Exchange Commission d. date of admission for trading May 31, 2001 e. if applicable, please indicate the trading segment Level II f. date on which the securities were first listed in the trading segment February 21, 2002 g. percentage of trading volume abroad in relation to the total trading volume of each class and type in the previous year (¹) 48.3% (¹) h. if applicable, the proportion of deposit certificates abroad in relation to each class and type of shares (²) 20.3% (²) i. if applicable, depository bank (3) JPMorgan Chase Bank j. if applicable, custodian institution (3) Itaú Unibanco Holding S.A. (1) Total volume of ADSs traded in relation to the total volume of preferred shares traded in 2024. Source: Economática. (2) Balance of outstanding ADSs in relation to the preferred shares of the capital stock outstanding on December 31, 2024. Medium-Term Note Programme Euro MTF Depending on the issue N/A N/A JPMorgan Chase Bank JPMorgan Chase Bank Grand Duchy of Luxembourg Luxembourg Stock Exchange Commission de Surveillance du Secteur Financier Depending on the issue

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) number; c) total face value; d) issue date; f) restrictions on trading; g) convertibility into shares or concession of right to subscribe or purchase the issuer's shares, indicating: i. conditions; ii. effects on capital; h) possibility of redemption, indicating: i. cases for redemption; ii. formula for calculating the redemption amount; i) when the securities are debt-related, please indicate: i. maturity, including early maturity conditions; ii. interest; iii. the guarantee and, if secured, a description of the asset that is the subject matter of the guarantee iv. in the absence of a guarantee, whether the credit is unsecured or subordinated v. any restrictions imposed on the issuer with respect to: • the distribution of dividends; • the disposal of certain assets; • the contracting of new debts; • the issue of new securities; • corporate transactions carried out, involving the issuer, its controlling stockholders or subsidiaries. j) any conditions for changing the rights assured by such securities; k) other relevant characteristics. On March 29, 2010, the Medium-Term Note Program ("Program") of Itaú Unibanco Holding S.A., operating through its head office in Brazil or by means of its branch in the Cayman Islands ("Issuer"), was launched. A list of the issues already settled is presented below: Issue Date Issue Liquidation First Issue 04.15.2010 04.15.2020

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Second Issue 09.23.2010 01.22.2021 Reopening of the Second Issue 01.31.2011 01.22.2021 Fourth Issue 06.21.2011 12.21.2021 Reopening of the Fourth Issue 01.24.2012 12.21.2021 Fifth Issue 03.19.2012 03.19.2022 Sixth Issue 08.06.2012 08.06.2022 Seventh Issue 11.13.2012 05.13.2023 Eighth Issue 05.26.2015 05.26.2018 Ninth issue 12.12.2017 12.12.2024 Tenth Issue 03.19.2018 09.19.2025 Eleventh Issue 11.21.2019 11.21.2024 Twelfth Issue 01.24.2020 01.24.2023 Thirteenth Issue 01.24.2020 01.24.2025 Fourteenth Issue 02.27.2020 08.27.2025 Below are descriptions of the issues. Fifteenth Issue a. Identification of the security, indicating the jurisdiction: Tier II Subordinated Notes ("Notes"). The Notes and all documents referring to the Program will be governed by the English laws and the courts of England will be responsible for settling any disputes arising from the Program and the Notes issued within its scope. b. Number: 02 Global Notes in the Global Nominal Value indicated in item (c) below, which may be split into minimum denominations of US$200,000.00 and whole multiples of US$1,000.00 onwards. c. Total face value: US$500,000,000.00. d. Issue date: January 15, 2021. e. Debt balance on June 30, 2025: R$2,737,872,402.64 f. Restrictions on outstanding securities: The Notes are offered solely under the terms of Rule 144A of the United States Securities Act of 1933 ("Rule 144A" and the "Securities Act") and of Regulation S of the Securities Act ("Regulation S"), so that the buyers of the Notes must declare certain conditions, including, but not limited to, the declarations that they are Qualified Institutional Buyers under Rule 144A or Non-US Persons under Regulation S, and that they understand that the Notes have not been registered under the terms of the Securities Act.

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The secondary trading of the Notes, or of any right related to them, will depend on the delivery, by the seller, of a declaration to the transfer agent of compliance with legislation applicable to the Notes. g. Convertibility into shares: Not applicable. h. Possibility of redemption: Yes, as follows. Cases for redemption: Early redemption of Notes at the issuer's discretion: As from the fifth anniversary of the issue date (inclusive) until April 15, 2026, subject to prior authorization by the Central Bank of Brazil, the Issuer may redeem the Notes, always in their totality. Early redemption of Notes for tax reasons: As from the fifth anniversary of the issue date, subject to prior authorization by the Central Bank of Brazil (if required at the time of redemption), the Notes will be redeemed at the Issuer`s discretion, always in their totality, upon prior notice to the holders of the Notes and subject to certain tax conditions. Early redemption of Notes by virtue of a regulatory event: Subject to prior authorization by the Central Bank of Brazil (if required at the time of redemption), the Issuer may redeem the Notes should there be a regulatory event. A regulatory event is defined as a written notice from the Central Bank of Brazil or any other Brazilian regulatory authority, establishing that the Notes are not classified as falling into Tier II of the Referential Equity or they fall into it in lower proportion than that provided for in the regulation in effect on the issue date. The Notes may not be early redeemed at the holders' discretion. The Notes will be cancelled in all the aforementioned cases. Formula for calculating the redemption amount: Early redemption of Notes at the issuer's discretion: 100% of the denominated value of US$1,000.00. Early redemption of Notes for tax reasons: 100% of the denominated value of US$1,000.00. Early redemption of Notes by virtue of a regulatory event: 100% of the denominated value of US$1,000.00. i. When the securities are debt-related, please indicate: i. Maturity, including early maturity conditions The maturity date of the Notes is April 15, 2031. If any of the following events occur (each one, an "Event of Default") and such occurrence survives time, the Trustee of the holders of the Notes, if so instructed by at least one-third (1/3) of the holders – computed at the face value of the Notes – or if so instructed by a special resolution of the holders of the Notes, will inform the Issuer of the accelerated maturity of the Notes, and the payment for which will become immediately enforceable, subject to the terms governing the calculation of the Early Redemption Amount. If (i) the Issuer is dissolved (except in connection with a merger or corporate restructuring not involving bankruptcy or insolvency and provided that the Issuer's legal successor assumes the obligation arising from the Notes); (ii) it suspends the payment or is unable to honor the payment of its debts; (iii) it submits a court-supervised reorganization or bankruptcy plan or takes any other

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;action that implies a change in the payment conditions of its debts; or (iv) bankruptcy proceedings are filed by third parties against the Issuer, and provided that these actions are not suspended within sixty (60) days from their submission. The Issuer, however, will only be required to pay the amounts due if it is declared bankrupted, has been dissolved or is unable to make the payment of the totality or a substantial portion of its liabilities, it being clear that the payment of the Notes should observe the terms of subordination. ii.Interest: These are fixed-rate Subordinated Notes, of which interest rate is 3.875% per year by April 15, 2026. The offer price of the Notes was 99.671%, resulting in a yield to investors of 3.95%. After April 15, 2026, interest rate will be recalculated based on the interest rate in force for 5-year U.S. Treasury Bonds plus Credit Spread (equal to 3.446%). Credit Spread (3.446% per year) is defined as the difference in yield between the rate for the issue of the Notes (3.95% per year) and the interest rate in force for the 5-year U.S. Treasury Bonds upon issue (0.504% per year). The payments of principal and interest will be made by The Bank of New York Mellon, London and New York branches, and The Bank of New York Mellon (Luxembourg) S.A. Interest will be levied on the face value of each Note, from the issue date of the Notes, and it will be due every six months on April 15 and October 15, beginning April 15, 2021. The first interest period will be shorter, corresponding to the period from January 15, 2021 (inclusive) to April 15, 2021. iii.Guarantees: Not applicable.Subordinated Notes. In the event of winding up, the holders of the Notes will be repaid after all the other special creditors with secured guarantee and after all the other unsecured creditors have been satisfied. iv.Type: Subordinated. Please see item "vii – Other relevant characteristics". v.Any restrictions imposed on the issuer with respect to: the distribution of dividends: Not applicable. the disposal of certain assets: Not applicable. the contracting of new debts: Not applicable. the issue of new securities: Not applicable. corporate transactions carried out, involving the issuer, its controlling stockholders or controlled companies: Any corporate restructuring of the Issuer is permitted, provided that (a) the resulting entity that assumes substantially all of the Issuer's assets effectively assumes all obligations under the Note; (b) no Event of Default had occurred after the restructuring; (c) the Issuer certifies that it has complied with these conditions and presents an independent legal opinion that certifies that the resulting entity has legally assumed all the obligations under the Notes. vi.Conditions for changing the rights assured by such securities: Some changes can be made to the terms and conditions of the Notes, without the consent of their holders, such as changes: (i) that are minor corrections; (ii) that are merely of form or of a technical nature; (iii) that are made to correct a patent error; (iv) that are made to correct an ambiguity or

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;inconsistency; (v) that are made in conformity with a permitted corporate restructuring process; (vi) that are made for any other modification that does not substantially affect the rights of the holders of the Notes. The changes will be communicated to the holders of the Notes by the Trustee as soon as possible. Additionally, the Issuer may change the terms and conditions applicable to the Notes, once for each series, solely to meet a requirement imposed by the Central Bank of Brazil, so that the Notes may be considered as included in Tier II of the Referential Equity, in accordance with CMN Resolution nº 4,955, of October 21, 2021 ("Resolution nº 4,955"), as amended from time to time.The Issuer may not make any change that implies modification, at any level, to the interest rate of the Notes, the amount of the outstanding Notes, the payment dates of interest and its exponential levying, the maturity date originally agreed upon, and the subordination of these Notes. vii.Other relevant characteristics: The Notes are direct, unsecured and subordinated obligations of the Issuer and they will be subordinated in payment preference to all of the other liabilities of the Issuer (except for the tier 1 debt obligations to stockholders). The Notes will be ranked equally at any time, with no preference, and they will have, at any time and considering some exceptions that may be provided for in legislation, the same payment preference as all current and future subordinated obligations, with no guarantee of the Issuer, in accordance with Resolution nº 4,955. The Subordinated Notes were established by an Amended and Restated Trust Deed dated August 4, 2016, entered into by the Issuer and The Bank of New York Mellon, as the Trustee of the holders of the Subordinated Notes, as amended from time to time.Each issue of Notes will be supplemented by the issue of the Final Terms, following the model agreed upon between the Issuer and the Trustee. The Subordinated Notes are issued solely as book-entry notes. The Subordinated Notes were offered by a syndicate of Dealers of the operation, under an Amended and Restated Dealer Agreement dated August 4, 2016, as amended from time to time. The Dealers of this issue are Itau BBA USA Securities, Inc; Banco BTG Pactual S.A., Cayman Branch; J.P. Morgan Securities LLC; Goldman Sachs & Co. LLC; Credit Agricole Securities (USA) Inc. and Citigroup Global Markets Inc.An authorization of the Luxembourg Stock Exchange was obtained for the Notes issued under the scope of the Program to be admitted for trading on the Euro MTF market, managed by that stock exchange. The first day of listing of the Notes was January 15, 2021. The Notes were not subject to registration under the Securities Act, and they were offered solely: (i) in the United States of America to Qualified Institutional Buyers, as defined in Rule 144A; and (ii) in any other country to Non-US Persons, in accordance with the definition of the Regulation S of the Securities Act. Please see item "f – Restrictions on outstanding securities". There has not been and there will not be any effort for a public distribution of the Notes, and therefore no public offering has been registered with the Brazilian Securities and Exchange Commission, or with any other similar body in any other country. The Notes will not be issued, placed, distributed, offered or traded in the Brazilian capital markets. Subject to authorization of the Central Bank of Brazil and compliance with the operational and capital limits set forth in the item below, the Issuer (or any of its subsidiaries) may, at any time and for any price, repurchase the Notes in the secondary market or in any other way, provided that it

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;is in compliance with the terms of subordination. The Notes purchased will neither entitle the Issuer to attend the annual meeting of the holders of Notes nor be computed for quorum purposes in these meetings. The Issuer intends to use the net amount arising from the issue of Subordinated Notes to partially or fully finance and/or refinance existing or future social and/or green projects, as described in the Final Terms of this issue. Twentieth Issue a. Identification of the security, indicating the jurisdiction: Senior Notes ("Notes"). The Notes and all documents referring to the Program will be governed by the English laws and the courts of England will be responsible for settling any disputes arising from the Program and the Notes issued within its scope. b. Number: 02 Global Notes in the Global Nominal Value indicated in item (c) below, which may be split into minimum denominations of US$200,000.00 and whole multiples of US$1,000.00 onwards. c. Total face value: US$1,000,000,000.00. d. Issue date: February 24, 2025. e. Debt balance on June 30, 2025: R$5,484,147,345.52 f. Restrictions on outstanding securities: The Notes are offered solely under the terms of Rule 144A of the United States Securities Act of 1933 ("Rule 144A" and the "Securities Act") and of Regulation S of the Securities Act ("Regulation S"), so that the buyers of the Notes must declare certain conditions, including, but not limited to, the declarations that they are Qualified Institutional Buyers under Rule 144A or Non-US Persons under Regulation S, and that they understand that the Notes have not been registered under the terms of the Securities Act. The secondary trading of the Notes, or of any right related to them, will depend on the delivery, by the seller, of a declaration to the transfer agent of compliance with legislation applicable to the Notes. g. Convertibility into shares: Not applicable. h. Possibility of redemption: Yes, as follows. Cases for redemption: The Notes may not be early redeemed at the holders' discretion. Early redemption of Notes for tax reasons: The Notes will be redeemed at the Issuer's discretion, always in their totality at any time, upon prior notice to the holders of the Notes and subject to certain conditions of tax nature. The notes can be fully or partially redeemed at the Issuer's discretion, provided that a prior notice is provided at least 15 days and at most 30 days in advance.

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In the event above, the Notes will be cancelled. Formula for calculating the redemption amount: Early redemption of Notes for tax reasons: 100% of the denominated value of US$1,000.00. i. When the securities are debt-related, please indicate: Maturity, including early maturity conditions The maturity date of the Notes is February 27, 2027. If any of the following events occur (each one, an "Event of Default") and such occurrence survives time, the Trustee of the holders of the Notes, if so instructed by at least one-third (1/3) of the holders – computed at the face value of the Notes – or if so instructed by a special resolution of the holders of the Notes, will inform the Issuer of the accelerated maturity of the Notes, and the payment for which will become immediately enforceable, subject to the terms governing the calculation of the Early Redemption Amount. Should the Issuer (a) suspend payment of the principal value and/or interest in relation to the Notes on the dates on which such principal value and/or interest became due, except, in the case of principal values, if this non-payment event persists for a period of three days and, in the case of interest, for a period of ten days, (b) fail to comply with one or more of its other material obligations as defined for the respective series or in accordance with the Trust Deed and this non-performance persists for a period of 30 days after receiving written notice of this non-compliance from the Trustee, (c) (i) elect the early maturity of any debt or the debt of any one of its material subsidiaries and this early maturity be overdue at least two business days, or (ii) fail to make payment of values relating to its debt and the duration of the non-payment event be at least two business days, (d) (i) be wound up (except when related to a merger or corporate reorganization not involving bankruptcy or insolvency and conditional on the legal successor of the Issuer assuming the obligations pertaining to the Notes), (ii) suspend the payment or be unable to honor payments of its debts, (iii) propose a court-supervised reorganization or bankruptcy plan or promote any other action which implies a change to the payment conditions of its debts, or (iv) should bankruptcy proceedings be proposed by third parties against the Issuer, conditional on these actions not being suspended within sixty (60) days of their submission. In case of any of the events (a), (b) and (c) above, an event of default will occur only if the aggregate amount of the Debt with respect to which any of the events mentioned in the above items has occurred is equal to or higher than the amount equivalent to 0.8% of the Issuer's reference equity for the most recent fiscal quarter. Holders of Notes representing two-thirds of the total face value of the Notes affected by the above events may revoke the early maturity following notification of this early maturity. Interest: These are fixed-rate Notes and the interest rate of which is 6.000% per year. Interest will be levied on the face value of each Note, from the issue date of the Notes, and will be due every six months on February 27 and August 27, beginning August 27, 2025. Guarantees: Not applicable. Type: Unsecured Any restrictions imposed on the issuer with respect to:

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the distribution of dividends: Not applicable. the disposal of certain assets: Not applicable. the contracting of new debts: Not applicable. the issue of new securities: Not applicable. corporate transactions carried out, involving the issuer, its controlling stockholders or controlled companies: Any corporate restructuring of the Issuer is permitted, provided that (a) the resulting entity that assumes substantially all of the Issuer's assets effectively assumes all obligations under the Note; (b) no Event of Default had occurred after the restructuring process; (c) the Issuer certifies that it has complied with these conditions and presents an independent legal opinion that certifies that the resulting entity has legally assumed all the obligations under the Notes. Conditions for changing the rights assured by such securities: Some changes can be made to the terms and conditions of the Notes, without the consent of their holders, such as changes: (i) that are minor corrections; (ii) that are merely of form or of a technical nature; (iii) that are made to correct a patent error; (iv) that are made to correct an ambiguity or inconsistency; (v) to add obligations to the Issuer, for the benefit of the holders of the Notes, or withdraw some right or power granted to the Issuer; (vi) to add guarantees to the Notes; (vii) that are made in conformity with a permitted corporate restructuring process; (viii) that are made for any other modification that does not substantially affect the rights of the holders of the Notes. The changes will be communicated to the holders of the Notes by the Trustee as soon as possible. Other relevant characteristics: The Notes will be ranked equally at any time, with no preference, and they will have, at any time and considering certain exceptions possibly set forth in legislation, the same payment preferences as all the Issuer's current and future unsecured obligations. The Notes were established by an Amended and Restated Trust Deed dated August 4, 2016, entered into by the Issuer and The Bank of New York Mellon, in the capacity of Trustee of the holders of the Notes, as amended from time to time and supplemented by the Final Terms issued on February 27, 2025. The Notes are issued solely as book-entry notes. The Notes were offered by a syndicate of Dealers of the operation, under an Amended and Restated Dealer Agreement dated August 4, 2016, as amended from time to time. The Dealers of this issue are Bofa Securities, Citigroup, Itaú BBA, J.P. Morgan and UBS Investment Bank. An authorization of the Luxembourg Stock Exchange was obtained for the Notes issued under the scope of the Program to be admitted for trading on the Euro MTF market, managed by that stock exchange. The first day of listing of the Notes of the sixteenth series was February 27, 2025. The Notes were not subject to registration under the Securities Act, and they were offered solely: (i) in the United States of America to Qualified Institutional Buyers, as defined in Rule 144A; and (ii) in any other country to Non-US Persons, in accordance with the definition of the Regulation S of the Securities Act. Please see item "f - Restrictions on outstanding securities". There has not been and there will not be any effort for a public distribution of the Notes, and therefore no public offering has been registered with the Brazilian Securities and Exchange

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Commission, or with any other similar body in any other country. The Notes will not be issued, placed, distributed, offered or traded in the Brazilian capital markets.

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