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

BOADILLA DEL MONTE Madrid 28660

+34 (91) 289 0000 Series 106 1.849% Senior Non Preferred Fixed Rate Notes due 2026 17 CFR 240.12d2-2(a)(2) Victoria Paper Manager, Market Watch 2026-03-25