Company: BCDRF
Filing Date: 2025-10-29
Form Type: 6-K
Source: 0000891478-25-000138
Chunk: 8

Company: Banco Santander, S.A.
Filing Date: 2025-10-29
Form: 6-K
Chunk 8
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NTS AT END OF PERIOD                                          |     |      |     |            |         |        |                |         |         |
| Cash                                                                                              |     |      |     |            |   6,657 |        |                |   9,432 |         |
| Cash equivalents at central banks                                                                 |     |      |     |            | 145,279 |        |                | 144,545 |         |
| Other financial assets                                                                            |     |      |     |            |   9,963 |        |                |  15,400 |         |
| Less: Bank overdrafts refundable on demand                                                        |     |      |     |            |       — |        |                |       — |         |
| TOTAL CASH AND CASH EQUIVALENTS AT END OF PERIOD                                                  |     |      |     |            | 161,899 |        |                | 169,377 |         |
| In which: restricted cash                                                                         |     |      |     |            |       — |        |                |       — |         |
| TOTAL CASH AND CASH EQUIVALENTS AT END OF PERIOD ASSOCIATED WITH NON-CURRENT ASSETS HELD FOR SALE |     |    6 |     |            |   3,308 |        |                |       — |         |

<div align='center'>(*) Presented for comparison purposes only (see Note 1.e).

The accompanying explanatory Notes 1 to 17 are an integral part of the condensed consolidated statement of recognised income and expense for the nine-month period ended 30 September 2025.</div>

| January - September 2025 |     | 11 |

Banco Santander, S.A. and Companies composing Grupo Santander

Explanatory notes to the interim condensed consolidated financial statements for the nine-month period ended 30 September 2025.

1. Introduction, basis of presentation of the interim condensed consolidated financial statements and other information

#### a) Introduction
Banco Santander, S.A. ('the parent' or 'Banco Santander') is a private-law entity subject to the rules and regulations applicable to banks operating in Spain. The Bylaws and other public information of the Bank can be consulted at its registered office at Paseo de Pereda 9 -12, Santander.

In addition to the operations carried on directly by it, Banco Santander is the head of a group of subsidiaries that engage in various business activities and