Company: BCDRF
Filing Date: 2025-04-30
Form Type: 6-K
Source: 0000891478-25-000084
Chunk: 7

Company: Banco Santander, S.A.
Filing Date: 2025-04-30
Form: 6-K
Chunk 7
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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 three-month period ended 31 March 2025.</div>

| January - March 2025 |     | 11 |

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

Explanatory notes to the interim condensed consolidated financial statements for the three-month period ended 31 March 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 which compose, together with it, Grupo Santander ('Santander' or 'The Group').

Grupo Santander's interim condensed consolidated financial statements ('interim financial statements') for the three-month period ended 31 March 2025 were authorised and approved by Grupo Santander's directors at the board of directors meeting held on 29 April 2025. Grupo Santander's consolidated annual accounts for year 2024 were approved by shareholders at Banco Santander annual general meeting on 4 April 2025.

### b) Basis of presentation of the interim financial statements
Under Regulation (EC) n.º 1606/2002 of the European Parliament and of the Council of 19 July 2002 all companies governed by the law of an EU Member State and whose securities are admitted to trading on a regulated market of any Member State must prepare their consolidated financial statements for the years beginning on or after 1 January, 2005 in conformity with the International Financial Reporting Standards ('IFRS') previously adopted by the European Union ('EU-IFRS'). In order to adapt the accounting system of Spanish credit institutions with the principles and criteria established by the IFRS adopted by the European Union ('EU-IFRS'), the Bank of Spain published circular 4/2017, dated 27 November 2017, and subsequent changes, on Public and Confidential Financial Reporting Standards and Financial Statement Formats.

The consolidated annual accounts for 2024 were authorised at the board of