Company: BCDRF
Filing Date: 2025-04-04
Form Type: 6-K
Source: 0000950103-25-004384
Chunk: 0

Company: Banco Santander, S.A.
Filing Date: 2025-04-04
Form: 6-K
Chunk 0
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<div align='center'>FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Report of Foreign Issuer

Pursuant to Rule 13a-16 or 15d-16 of

the Securities Exchange Act of 1934

For the month of April, 2025

Commission File Number: 001-12518

Banco Santander, S.A.

(Exact name of registrant as specified in its charter)

Ciudad Grupo Santander

28660 Boadilla del Monte (Madrid) Spain

(Address of principal executive office)</div>

Indicate by check mark whether the registrant files or will file annual
reports under cover of Form 20-F or Form 40-F:

| Form 20-F | X |     | Form 40-F |

<div align='center'>Banco Santander, S.A.

TABLE OF CONTENTS</div>

| Item |                                                                               |
| 1    | Resolutions adopted by the General Shareholders’ Meeting held on 4 April 2025 |

Item 1

MR. JAIME PÉREZ RENOVALES, SECRETARY GENERAL
AND SECRETARY OF THE BOARD OF “BANCO SANTANDER, S.A.”,

CERTIFY: That at the General
Shareholders’ Meeting of this entity, validly held on 4 April 2025, the following resolutions were passed:

| “1ºA To approve the annual accounts (balance sheet, profit and loss statement, statement of recognised income and expense, statement of changes in total equity, cash flow statement, and notes) and the directors’ reports of Banco Santander, S.A. and of its consolidated Group for the financial year ended 31 December 2024, all drawn up in eXtensible HyperText Markup Language (XHTML) format, with the consolidated financial statements and the notes to the consolidated financial statements tagged using standard eXtensible Business Reporting Language (XBRL), in accordance with Directive 2004/109/EC and Delegated Regulation (EU) No 2019/815. |
| 1º B To approve the consolidated statement                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
 of non-financial information for the financial year ended 31 December 2024, which is part of the consolidated directors’ report                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
 for said financial year (included in the “Sustainability Statement” chapter of the 2024 annual report).