Company: BCDRF
Filing Date: 2025-04-30
Form Type: 6-K
Source: 0000891478-25-000084
Chunk: 53

Company: Banco Santander, S.A.
Filing Date: 2025-04-30
Form: 6-K
Chunk 53
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 |    |                                                       |   317 |        |
| TOTAL LIABILITIES                                                             |     |                                                       |       |  1,227 |                       |       |   357 |                    |        |    -36 |                                                    |     | -60 |                                            |     |   — |                         |      |   69 |       |     | -4 |                                                       |       |  1,553 |

| January - March 2025 |     | 51 |

#### 17. Explanation added for translation to English
These interim condensed consolidated financial statements are presented on the basis of the regulatory financial reporting framework applicable to Grupo Santander in Spain (see Note 1.b).

| 52 |     | January - March 2025 |

### SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

|                        |     | Banco Santander, S.A. |     |                         |
| Date:    30 April 2025 |     | By:                   |     | /s/ José García Cantera |
|                        |     | Name:                 |     | José García Cantera     |
|                        |     | Title:                |     | Chief Financial Officer |