Company: BCDRF
Filing Date: 2025-10-31
Form Type: 424B5
Source: 0001193125-25-260533
Chunk: 81

Company: Banco Santander, S.A.
Filing Date: 2025-10-31
Form: 424B5
Chunk 81
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curities in South Korea for the purposes of the Financial Investment Services and Capital Markets Act of Korea. The Notes have not been and will not be registered with the Financial Services Commission of South Korea for public offering in South
Korea under the Financial Investment Services and Capital Markets Act and its subordinate decrees and regulations (collectively, the “FSCMA”). The Notes may not be offered, remarketed, sold or delivered, directly or indirectly, or
offered, remarketed or sold to any person for re-offering or resale, directly or indirectly, in South Korea or to any resident of South Korea except as otherwise permitted under the applicable laws and
regulations of South Korea, including the FSCMA and the Foreign Exchange Transaction Law and its subordinate decrees and regulations (collectively, the “FETL”). Without prejudice to the foregoing, the number of Notes offered in South
Korea or to investors who are residents in South Korea shall be less than fifty and for a period of one year from the issue date of the Notes, none of the Notes may be divided resulting in an increased number of the Notes. Furthermore, the Notes may
not be resold to South Korean residents unless the purchaser of the Notes complies with all applicable regulatory requirements (including but not limited to government reporting requirements under the FETL) in connection with the purchase of the
Notes.

Notice to Prospective Investors in Taiwan

The Notes have not been and will not be registered with the Financial Supervisory Commission of Taiwan, pursuant to relevant securities laws
and regulations and may not be offered or sold directly or indirectly in Taiwan, or to, or for the account or benefit of, any person in Taiwan unless otherwise in compliance with the applicable laws and regulations of Taiwan. No person or entity in
Taiwan has been authorized to offer, sell, give advice regarding or otherwise intermediate the offering and sale of the Notes in Taiwan.

Notice to Prospective Investors in Singapore

This prospectus supplement and accompanying prospectus have not been registered as a prospectus with the Monetary Authority of Singapore.
Accordingly, this prospectus supplement and accompanying prospectus and any other document or material in connection with the offer or sale, or invitation for subscription or purchase, of the Notes may not be circulated or distributed, nor may the
Notes be offered or sold, or be made the subject of an invitation for subscription or purchase, nor may the Notes be circulated or distributed, whether directly or

S-50

indirectly, to any person in Singapore other than (