Company: BCDRF
Filing Date: 2025-07-31
Form Type: 6-K
Source: 0000891478-25-000113
Chunk: 1

Company: Banco Santander, S.A.
Filing Date: 2025-07-31
Form: 6-K
Chunk 1
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| 77 |     | Alternative Performance Measures                    |
| 89 |     | Interim condensed consolidated financial statements |
| 92 |     | Glossary                                            |
| 93 |     | Important information                               |
| 95 |     | Main risks and uncertainties                        |
| 96 |     | Other disclosures required by the Bank of Spain     |
| 98 |     | Interim condensed consolidated financial statements |

This report was approved by the board of directors on 29 July 2025, following a favourable report from the audit committee. Important information regarding this report can be found on pages 92 and 93.

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

### SIGNIFICANT EVENTS IN THE PERIOD
In Q2 2025, Santander announced the entry into an agreement with Erste Group Bank AG (Erste) to sell approximately 49% of its stake in Santander Bank Polska S.A. and the 50% of the asset management company (TFI) which was not integrated within Santander Polska to Erste, for a total cash amount of approximately EUR 7 billion. In addition, Santander announced its intention to acquire 100% of Santander Consumer Bank Polska by purchasing the 60% stake currently held by Santander Bank Polska S.A. (approximately EUR 0.7 billion), thereby bringing the business fully within the perimeter of Grupo Santander and excluding it from the scope of the sale. Santander and Erste also announced a strategic collaboration to leverage the strengths and international presence of both institutions in Corporate & Investment Banking (CIB) and to enable Erste to benefit from Santander’s global payments platforms. The transaction is subject to customary closing conditions, including regulatory approvals, such as that of the Polish Financial Supervision Authority (KNF). Completion is expected around the end of 2025. The abovementioned transaction will hereinafter be referred to as the 'Poland disposal', based on the assumption that it will be completed under the terms described above.

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 '