BCDRF · Banco Santander, S.A.

Banco Santander continues to execute its share buyback program, with cumulative purchases now totaling €2.83 billion, representing 56.3% of the maximum investment amount. This disclosure covers transactions from April 16 to April 23, 2026, during which the Bank acquired nearly 12 million shares. The execution strategy utilized multiple trading venues, with the bulk of the volume concentrated on April 23 across XMAD, CEUX, TQEX, and AQEU. The weighted average prices during this period ranged between €10.32 and €10.79. The program, initiated following the Board of Directors' approval and communicated in February 2026, has resulted in the repurchase of approximately 16.9% of the Bank's outstanding shares as of 2021. This sustained capital return activity signals management's confidence in the Bank's capital position and commitment to returning value to shareholders. The multi-venue execution approach suggests an effort to minimize market impact while efficiently acquiring the targeted volume.