Company: BCDRF
Filing Date: 2025-05-22
Form Type: 6-K
Source: 0000950103-25-006323
Chunk: 1

Company: Banco Santander, S.A.
Filing Date: 2025-05-22
Form: 6-K
Chunk 1
---
          |           71,569 |                     6.9207 |
| 20/05/2025 | SAN      | Purchase    | XMAD          |        1,267,995 |                     7.0276 |
| 20/05/2025 | SAN      | Purchase    | CEUX          |          121,003 |                     7.0422 |
| 20/05/2025 | SAN      | Purchase    | TQEX          |           43,419 |                     7.0359 |
| 20/05/2025 | SAN      | Purchase    | AQEU          |           67,583 |                     7.0425 |
| 21/05/2025 | SAN      | Purchase    | XMAD          |        1,250,850 |                     7.0789 |
| 21/05/2025 | SAN      | Purchase    | CEUX          |          129,351 |                     7.0812 |
| 21/05/2025 | SAN      | Purchase    | TQEX          |           49,616 |                     7.0682 |
| 21/05/2025 | SAN      | Purchase    | AQEU          |           70,183 |                     7.0623 |
|            |          |             | TOTAL         |        7,800,000 |                            |

1

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), 22 May 2025

2

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

Detailed information on each of the transactions carried out within the context of the Buy-back Programme between 14/05/2025 and 21/05/2025 (both inclusive)

(https://www.santander.com/content/dam/santander-com/es/documentos/cumplimiento/do-anexo-i-14-a-21-may-2025.pdf)

3

<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 unders