[EFFECT] Banco Santander, S.A. SEC Filing Filing Impact (Neutral) Filing Sentiment (Neutral) Form Type EFFECT 04/23/2026 - 12:15 AM ⛶ Fullscreen UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Notice of Effectiveness Effectiveness Date: April 22, 2026 4:00 P.M. Form: F-4 CIK: 0000891478 Company Name: Banco Santander, S.A. File Number: 333-294235 Source: View Original Filing on SEC EDGAR