B3 S A Brasil Bolsa Balcão : Notice to the Market - Changes in the Executive Board

About this update from B3 Sa - Brasil, Bolsa, Balcao

B3 S.A. - Brasil, Bolsa, Balcão CNPJ nº 09.346.601/0001-25 NIRE 35.300.351.452 NOTICE TO THE MARKET Changes in the Executive Board B3 S.A. - Brasil, Bolsa, Balcão ("Company" or "B3") informs its shareholders and the market in general that, in a joint decision with the Company's Board of Directors, Silvia Maria de Almeida Bugelli Valença, Executive Legal Director, will leave her position at the Company as of June 1. The Company thanks Silvia for her dedication, professionalism and contributions throughout her tenure at the Company, wishes her success in her future endeavors, and informs that it will, in due course, communicate to the market the nomination and election of her successor, in accordance with the applicable laws and regulations. São Paulo, May 18, 2026 André Veiga Milanez Chief Financial, Corporate and Investor Relations Officer Relações com Investidores: +55 11 2565-7739 / 7976 / 6993 / 6828 | [email protected]

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