Company: BCDRF
Filing Date: 2025-03-06
Form Type: 6-K
Source: 0000950103-25-003077
Chunk: 1

Company: Banco Santander, S.A.
Filing Date: 2025-03-06
Form: 6-K
Chunk 1
---
 | AQEU          |          255,360 |                     5.9900 |
| 05/03/2025 | SAN      | Purchase    | XMAD          |        1,121,791 |                     6.1636 |
| 05/03/2025 | SAN      | Purchase    | CEUX          |          460,708 |                     6.1755 |
| 05/03/2025 | SAN      | Purchase    | TQEX          |          121,199 |                     6.1742 |
| 05/03/2025 | SAN      | Purchase    | AQEU          |          296,302 |                     6.1790 |
|            |          |             | TOTAL         |       12,400,000 |                            |

Issuer name: Banco Santander, S.A.- LEI
5493006QMFDDMYWIAM13

Reference of the financial instrument: ordinary
shares - Code ISIN ES0113900J37

Detailed information of the transactions carried
out within the referred period is attached as Annex I.

Boadilla del Monte (Madrid), 6 March 2025

<div align='center'>ANNEX I</div>

Detailed information on each of the transactions carried out within the context of the Buy-back Programme between 27/02/2025 and 05/03/2025 (both inclusive)

(https://www.santander.com/content/dam/santander-com/es/documentos/cumplimiento/do-anexo-i-27-feb-a-05-mar-2025.pdf)

<div align='center'>SIGNATURE</div>

Pursuant to the requirements of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

| Date: | March 6, 2025 |     | Banco Santander, S.A. 
 By:                   | /s/ Pedro de Mingo Kaminouchi |                              |
|:------|:--------------|:----|:----------------------|:------------------------------|:-----------------------------|
|       |               |     |                       | Name:                         | Pedro de Mingo Kaminouchi    |
|       |               |     |                       | Title:                        | Head of Corporate Compliance |