Company: BCDRF
Filing Date: 2025-10-29
Form Type: 6-K
Source: 0000891478-25-000132
Chunk: 63

Company: Banco Santander, S.A.
Filing Date: 2025-10-29
Form: 6-K
Chunk 63
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 | Index |

### CORPORATE GOVERNANCE

### Changes to the Group's Senior Management
The board of directors of Banco Santander appointed Juan Olaizola as the new Group Chief Operating & Technology Officer, effective 1 September 2025. The appointment has received the required regulatory approval. Mr Olaizola joined the Group in 2005 as Chief Operating Officer at Santander UK, responsible for T&O among other functions. From 2017 to 2022, he served as Head of T&O of Santander Spain and Europe and, since 2022, he was the CEO of PagoNxt Payments Hub. He succeeds Dirk Marzluf, who remains in the Group as senior advisor to the Executive Chair.

#### Changes to the international advisory board
José Fernández da Ponte joined as a member of the international advisory board. Mr Fernández da Ponte is the President and Chief Growth Officer of the Stellar Development Foundation and has a deep understanding of blockchain, as well as cryptocurrencies, stablecoins and central bank digital currencies. Andreas Dombret ceased being a member of said advisory board.

| January - September2025 |     | 47 |

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

### APPENDIX
| 48 |     | January- September2025 |

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

### Financial information
Group information

As a result of the Poland disposal and in accordance with IFRS 5 requirements, the business subject to the Poland disposal has been classified as 'non-current assets/liabilities held for sale' and the related results have been reported under 'discontinued operations'. Accordingly:

• In the Group’s consolidated balance sheet, the assets associated with the Poland disposal are classified under the 'non-current assets held for sale' line item and the related liabilities under 'liabilities associated with non-current assets held for sale'. This classification applies solely to balance sheets from 30 June 2025 onwards and does not affect balance sheets for prior periods. In the statutory income statement, the results associated with the business subject to the Poland