Insider Transaction Report for Mario Roberto Opice Leao

This filing details a report by Mario Roberto Opice Leao, CEO of Banco Santander (Brasil) S.A., concerning transactions of UNIT - SANB11. On June 8, 2026, Leao disposed of 75,000 units at a price of $5.21 per unit, resulting in 547,288 units held directly. Concurrently, 75,000 units were acquired indirectly through a fund wholly owned and controlled by Leao, with the same price per unit, resulting in 111,500 units held indirectly. The reported price per unit is equivalent to R$26.67, converted from Brazilian Reais at an exchange rate of R$5.1238 per U.S.$1.00.