# EDGAR Filing Document

**Accession Number:** 0000891478
**File Stem:** 0000950103-25-012804
**Filing Date:** 2025-10
**Character Count:** 3949
**Document Hash:** c9ec84d629336084cf1dcae90e52d82f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950103-25-012804.hdr.sgml**: 20251003

**ACCESSION NUMBER**: 0000950103-25-012804

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20251003

**FILED AS OF DATE**: 20251003

**DATE AS OF CHANGE**: 20251003

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Banco Santander, S.A.
- **CENTRAL INDEX KEY:** 0000891478
- **STANDARD INDUSTRIAL CLASSIFICATION:** COMMERCIAL BANKS, NEC [6029]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 132617929
- **STATE OF INCORPORATION:** U3
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-12518
- **FILM NUMBER:** 251372381

**BUSINESS ADDRESS:**
- **STREET 1:** CIUDAD GRUPO SANTANDER
- **STREET 2:** BOADILLA DEL MONTE
- **CITY:** MADRID
- **STATE:** U3
- **ZIP:** 28660
- **BUSINESS PHONE:** 34 91 289 32 80

**MAIL ADDRESS:**
- **STREET 1:** CIUDAD GRUPO SANTANDER
- **STREET 2:** BOADILLA DEL MONTE
- **CITY:** MADRID
- **STATE:** U3
- **ZIP:** 28660

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BANCO SANTANDER SA
- **DATE OF NAME CHANGE:** 20070925

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BANCO SANTANDER CENTRAL HISPANO SA
- **DATE OF NAME CHANGE:** 19990512

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BANCO SANTANDER S A
- **DATE OF NAME CHANGE:** 19931201

**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 October, 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)*

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

**Banco Santander, S.A.**

**TABLE OF CONTENTS**

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| **Item** |  |
| 1 | Report of Other Relevant Information dated October 3, 2025 |

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![](image_001.jpg)

**Item 1**

**Banco Santander, S.A. ("Santander" or the "Bank"), in compliance with the Securities Market legislation, hereby communicates the following:** 

**<u>OTHER RELEVANT INFORMATION</u>**

The rating agency Moody's Investors Service ("**Moody's**"), following the upgrade of Spain's government bond rating from Baa1 to A3/Stable, and the Macro Profile for Spain from Strong to Strong +, which lifted the constraining factor for Santander rating, has raised the Bank's long-term deposit and senior debt ratings from A2 to A1 (stable), and the rating of the three covered bond programs (Public Sector, Mortgage and Export finance) to Aaa from Aa1.

Furthermore, Moody's affirms Santander's baa1 Baseline Credit Assessment (BCA) reflecting its assessment of the Bank's operating environment and broad diversification, combined with a strong track record of low earnings volatility and improved capital levels, as well as its diversified funding structure and ample liquidity buffers.

Boadilla del Monte (Madrid), 3 October 2025

**<u>IMPORTANT INFORMATION</u>**

**Not a securities offer** 

This document and the information it contains does not constitute an offer to sell nor the solicitation of an offer to buy any securities.

**SIGNATURE**

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.

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| | | | | |
|:---|:---|:---|:---|:---|
| | | **Banco Santander, S.A.** | **Banco Santander, S.A.** | **Banco Santander, S.A.** |
| Date: | October 3, 2025 | By: | /s/ Pedro de Mingo Kaminouchi | /s/ Pedro de Mingo Kaminouchi |
|  |  |  | Name: | Pedro de Mingo Kaminouchi |
|  |  |  | Title: | Head of Corporate Compliance |

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