Initial Statement of Beneficial Ownership

This filing details an initial statement of beneficial ownership for Banco Santander (Brasil) S.A. (BSBR). The reporting owner, Maria Elena Lanciego Perez, a VP Executive Officer, reported direct ownership of 32,930 units of SANB11 following a transaction on March 18, 2026. The filing was signed by Maria Elena Lanciego Perez on the same date.