Company: BCDRF
Filing Date: 2025-10-29
Form Type: 6-K
Source: 0000891478-25-000132
Chunk: 65

Company: Banco Santander, S.A.
Filing Date: 2025-10-29
Form: 6-K
Chunk 65
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 15.0 |   |     |  14.5 |            |     | 42,946 |       |     |  39.2 |   |     |  41.7 |            |
| Customer deposits3                           |     | 25,621 |       |     |  19.4 |   |     |  18.6 |            |     | 25,621 |       |     |  45.7 |   |     |  48.5 |            |
| Mutual funds                                 |     | 17,326 |       |     |   9.0 |   |     |   8.9 |            |     | 17,326 |       |     |  30.7 |   |     |  32.8 |            |

1. Includes exchange differences.

2. Excluding reverse repos.

3. Excluding repos.

| 76 |     | January- September2025 |

| Significant events    
 Key consolidated data 
 Business model        |     | Group financial information |     | Financial information by segment |     | Sustainability       
 Corporate governance |     | Appendix |     | Index |
|                       |     |                             |     |                                  |     |                      |     | APMs     |     |       |

#### Alternative performance measures (APMs)
I n addition to the financial information prepared under IFRS, this consolidated directors’ report contains financial measures that constitute alternative performance measures (APMs) to comply with the guidelines on alternative performance measures issued by the European Securities and Markets Authority on 5 October 2015 and non-IFRS measures.

The financial measures contained in this consolidated directors’ report that qualify as APMs and non-IFRS measures have been calculated using our financial information but are not defined or detailed in the applicable financial information framework or under IFRS and therefore have neither been audited nor are susceptible to being fully audited.

We use these APMs and non-IFRS measures when planning, monitoring and evaluating our performance. We consider these APMs and non-IFRS financial measures to be useful metrics for management and investors to facilitate operating performance comparisons from period to period. While we believe that these APMs and non-IFRS financial measures are useful in evaluating our business, this information should be considered as supplemental in nature and is not meant as a substitute of IFRS measures. In addition, the way in which Santander defines and calculates these APM