Company: BCDRF
Filing Date: 2025-10-31
Form Type: 424B5
Source: 0001193125-25-260533
Chunk: 2

Company: Banco Santander, S.A.
Filing Date: 2025-10-31
Form: 424B5
Chunk 2
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 and unpaid interest (if any) (i) at any time upon the occurrence of certain tax events, (ii) at any time upon the occurrence of certain regulatory events set forth herein or (iii) if 75% or more of the initial aggregate principal amount of such series of Notes (which, for the avoidance of doubt, includes any additional issuances issued subsequently and constituting a single series of securities under the Base Indenture (as defined herein) as described under “ Description of Debt Securities—Additional Issuances” in the accompanying prospectus) have been redeemed or purchased by, or on behalf of, Banco Santander and cancelled. We may not redeem the Notes of any series under other circumstances, and there are no put rights with respect to the Notes of any series. See “ Description of the Notes—Redemption and Repurchase.” We intend to apply to list the Notes on the New York Stock Exchange in accordance with its rules. Investing in the Notes involves risks. See “ Risk Factors” beginning on page S-15 of this prospectus supplement, page 7 of the accompanying prospectus as well as those discussed under the heading “Risk Factors” in the Group’s Annual Report on Form 20-Ffor the year ended December 31, 2024 and under the heading “Part 2. Supplemental Information—Item 4. Risk Factors” in the Group’s Report on Form 6-Kfiled with the SEC on July 31, 2025 (Accession No. 0000891478-25-000113),which are incorporated by reference herein. The Notes are not intended to be offered, sold or otherwise made available and should not be offered, sold or otherwise made available to retail clients (as defined in Directive 2014/65/EU of the European Parliament and of the Council on Markets in Financial Instruments (“MiFID II”) and Regulation (EU) No. 2017/565 as it forms part of the domestic law of the United Kingdom by virtue of the European Union (Withdrawal) Act of 2018 (“EUWA”)) in the European Economic Area or in the United Kingdom. Prospective investors are referred to the section headed “Important Information” on page S-v of this prospectus supplement. Neither the U.S. Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the accuracy or adequacy of this prospectus supplement or the accompanying prospectus. Any representation to the contrary is a criminal offense.