Itaú Unibanco Holding S.A. - Bylaws Amendment

This report contains the updated bylaws of Itaú Unibanco Holding S.A., as approved by the Extraordinary Stockholders' Meeting on April 28, 2026. The bylaws detail the company's structure, purpose, and governance. Key aspects include the authorized and subscribed capital, share structure (common and preferred shares with their respective rights), and provisions for stock options and buybacks. The management structure is outlined, with clear roles for the Board of Directors and the Board of Officers, including their election, compensation, and responsibilities. The report also details the functions of the Audit Committee and the Compensation Committee, emphasizing their independence and responsibilities in financial oversight and compensation policies. Furthermore, it covers the Supervisory Council, fiscal year end, profit allocation, mandatory dividend distribution, and statutory reserves. The bylaws adhere to Brazilian corporate law and the Level 1 Corporate Governance standards of B3. The updated bylaws are pending approval from the Central Bank of Brazil.