Itaú Unibanco Holding S. A. provides a comprehensive range of banking and non banking financial services to individuals, corporations, and institutional clients in Brazil and abroad. Its core activities include retail banking, wholesale banking, and market related operations such as treasury, asset management, and investment banking. The company operates through a widespread branch network, digital platforms, and international subsidiaries across Latin America, the United States, and Europe. It also maintains a significant presence in capital markets through its investment banking arm and offers a full suite of wealth management solutions.

Revenue is primarily generated from interest income on loans and leases, fees and commissions from banking services, and premiums from insurance and private pension products. Additional sources include gains from financial assets at fair value, asset management fees, and revenues from merchant acquiring and card processing. The company serves a diverse client base ranging from retail customers and small medium enterprises to large corporates and high net worth individuals.

The company operates through the following segments: Retail Business, Wholesale Business, and Activities with the Market and Corporation.

• Retail Business offers personal loans, mortgage loans, payroll loans, credit cards, acquiring services, vehicle financing, investments, insurance, pension plans, and premium bond products to individual clients and small medium enterprises.

• Wholesale Business provides investment banking, asset management, private banking, securities brokerage, and corporate lending services to middle market, agribusiness, infrastructure, utilities, and large corporate clients.

• Activities with the Market and Corporation encompasses treasury operations, financial margin with the market, equity pickup from non linked affiliates, and the management of capital surplus, excess subordinated debt, and tax assets and liabilities.

Itaú Unibanco Holding S. A. is one of the largest private sector banks in Brazil, ranking among the top three by total assets alongside Banco do Brasil and Bradesco. Its main competitors include state owned banks such as Caixa Econômica Federal and private peers like Banco Santander (Brasil), as well as emerging digital players such as Nubank and Mercado Pago. Competitive advantages stem from its extensive branch and digital network, diversified product suite, strong brand recognition, and scale driven efficiencies in risk management and technology.

The company serves individuals, small and medium enterprises, large corporations, and institutional investors across Brazil and its international operations. Specific corporate partners mentioned in the filing include Magazine Luiza, Ponto Frio, Pão de Açúcar, and Assaí, which collaborate on credit card and acquiring initiatives. Additionally, Itaú Unibanco provides services to government entities, pension funds, and multinational corporations through its wholesale and international units.