Company: BCDRF
Filing Date: 2025-10-30
Form Type: 6-K
Source: 0000950103-25-013924
Chunk: 2

Company: Banco Santander, S.A.
Filing Date: 2025-10-30
Form: 6-K
Chunk 2
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 be covered by Additional Tier 1 and Tier 2 (0.33% y 0.44%, respectively), remaining unchanged with respect to the minimum requirement applicable as of 1 January 2025, save for the CET1 increase of 20 basis points specified above.

<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: | October 30, 2025 |     | Banco Santander, S.A. 
 By:                   | /s/ Pedro de Mingo Kaminouchi |                              |
|:------|:-----------------|:----|:----------------------|:------------------------------|:-----------------------------|
|       |                  |     |                       | Name:                         | Pedro de Mingo Kaminouchi    |
|       |                  |     |                       | Title:                        | Head of Corporate Compliance |