Company: BCDRF
Filing Date: 2025-01-23
Form Type: 8-A12B
Source: 0001193125-25-010795
Chunk: 0

Company: Banco Santander, S.A.
Filing Date: 2025-01-23
Form: 8-A12B
Chunk 0
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20459 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 Banco Santander, S.A. (Exact name of registrant as specified in its charter)

| Kingdom of Spain                         |     |                                None |
| (State of incorporation or organization) |     | -I.R.S. Employer Identification No. |
| Ciudad Grupo Santander                   
 28660 Boadilla del Monte (Madrid) Spain  |     |                               28660 |
| (Address of principal executive offices) |     |                           -Zip Code |

Securities to be registered pursuant to Section 12(b) of the Act:

| Title of each class to be so                                         
 registered                                                           |     | Name of each exchange on which each 
 class is to be registered           |
| Series SNP-241 5.565% Senior Non Preferred Fixed Rate Notes due 2030 |     | New York Stock Exchange             |
| Series SNP-242 6.033% Senior Non Preferred Fixed Rate Notes due 2035 |     | New York Stock Exchange             |

If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c) or (e), check the following box. ☒ If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d) or (e), check the following box. ☐ If this form relates to the registration of a class of securities concurrently with a Regulation A offering, check the following box. ☐ Securities Act registration statement or Regulation A offering statement file number to which this form relates: 333-271955 Securities to be registered pursuant to Section 12(g) of the Act: None.

INFORMATION REQUIRED IN REGISTRATION STATEMENT The Registrant has filed with the Securities and Exchange Commission (the “Commission”) pursuant to Rule 424(b) under the Securities Act of 1933, a prospectus supplement dated January 7, 2025, relating to the Registrant’s 5.565% Senior Non Preferred Fixed Rate Notes due 2030 and the 6.033% Senior Non Preferred Fixed Rate Notes due 2035 (the “Prospectus