X0203 0000876661 NEW YORK STOCK EXCHANGE LLC 0000891478 Banco Santander, S.A. 001-12518

Ciudad Grupo Santander Madrid 28660

+34 91 289 32 80 Series 10 4.750% Non-Step-Up Non-Cumulative Contingent Convertible Perpetual Preferred Tier 1 Securities 17 CFR 240.12d2-2(a)(1) Nadia Surges Analyst 2026-11-12