Company: BCDRF
Filing Date: 2025-01-08
Form Type: 424B5
Source: 0001193125-25-003514
Chunk: 33

Company: Banco Santander, S.A.
Filing Date: 2025-01-08
Form: 424B5
Chunk 33
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 amount thereof outstanding as of the
close of business 15 calendar days preceding the relevant 2035 Fixed Interest Payment Date, whether or not a Business Day.

Interest
on the 2035 Fixed Rate Notes will be calculated on the basis of a 360-day year consisting of twelve 30-day months and, in the case of an incomplete month, on the
basis of the actual number of days elapsed in such month. If any scheduled 2035 Fixed Interest Payment Date is not a Business Day, we will pay interest on the next Business Day, but interest on that payment will not accrue during the period
from and after the scheduled 2035 Fixed Interest Payment Date. If the 2035 Fixed Rate Notes Maturity Date or date of redemption or

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repayment is not a Business Day, we may pay interest and principal on the next succeeding Business Day, but interest on that payment will not accrue during the period from and after the
2035 Fixed Rate Notes Maturity Date or date of redemption or repayment.

General

The Notes will constitute two separate series of senior non preferred debt securities issued pursuant to the provisions of an indenture dated
as of March 14, 2024 (as heretofore amended and supplemented, the “Base Indenture”) between us as Issuer and The Bank of New York Mellon, London Branch, as trustee (the “Trustee”), as amended and supplemented by a second
supplemental indenture to be dated as of the date of issuance of the Notes (the “Second Supplemental Indenture”) between us as Issuer and the Trustee.

Book-entry interests in the Notes will be issued in denominations of $200,000 and integral multiples of $200,000 in excess thereof.

With respect to the Notes, the term “Business Day” means any day, other than Saturday or Sunday, that is not a legal holiday nor a
day on which banking institutions are authorized or required by law, regulation or executive order to close in the City of New York or London nor a day when the T2 real-time gross settlement (RTGS) system, owned and operated by the Eurosystem, or
any successor thereto, is closed for business.

The principal corporate trust office of the Trustee in London, United Kingdom, is
designated as the principal paying agent. We may at any time designate additional paying agents or rescind the designation of paying agents or approve a change in the office through which any paying agent acts.