Banco do Brasil S A : IOC 2Q26 - Advance Payment

Banco do Brasil S.A. Public-held Company

Corporate Taxpayer's Registry No. 00.000.000/0001-91 Company Registry 5330000063-8

Rule 12g3-2(b) Exemption # 82-35186

MATERIAL FACT Remuneration to the Shareholders 2nd Quarter 2026

Banco do Brasil hereby informs that it approved on May 15, 2026, the distribution to the shareholders of R$ 340,717,500.00 as advance payment of the Interest on Own Capital (IOC), related to the 2Q26. This distribution is in line with the payment schedule disclosed through the Material Fact of 01/19/2026.

	IOC per share
BB Voting Shares	R$ 0.05968401166

The IOC will be paid on June 11, 2026, and the record date for the payment will be June 01, 2026, and

shares will be negotiated "ex" IOC from June 02, 2026, on.

The payment procedure will be as follows:

• The amount will be paid through deposit in current or savings accounts or at a branches' cashier. The shareholder whose file at Banco do Brasil is not updated will have his/her credit retained until the file is updated. The update can be done at any Banco do Brasil branch, presenting required documents.

• To the shareholders whose shares are under custody of Central Depository of B3, the amounts will be paid to that organization, which will pay the shareholders through their depositary brokers.

• The amount paid will be subject to withholding income tax according to the Brazilian legislation. The shareholders exempted from the payment of the income tax shall prove that condition up to June 03, 2026, at any Banco do Brasil's branch.

For questions and other information please access: https://www.bb.com.br/ir, call the Shareholder Services Line at 4004 0001 (capitals and metropolitan regions) or 0800 729 0001 (other locations), or go to a Banco do Brasil's branch.

Brasília (DF), May 20, 2026.

Marco Geovanne Tobias da Silva CFO & IRO

www.bb.com.br/ri