# EDGAR Filing Document

**Accession Number:** 0000891478
**File Stem:** 0000950103-25-014410
**Filing Date:** 2025-11
**Character Count:** 8821
**Document Hash:** 8066a2cba277af9145ae14def9609fae
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950103-25-014410.hdr.sgml**: 20251106

**ACCESSION NUMBER**: 0000950103-25-014410

**CONFORMED SUBMISSION TYPE**: 8-A12B

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251106

**DATE AS OF CHANGE**: 20251106

**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:** 8-A12B
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-12518
- **FILM NUMBER:** 251457082

**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

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20459**

**FORM 8-A**

**FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES**

**PURSUANT TO SECTION 12(b) OR 12(g) OF THE**

**SECURITIES EXCHANGE ACT OF 1934**

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| | |
|:---|:---|
| **Banco Santander, S.A.**<br> (Exact name of registrant as specified in its charter)  | **Banco Santander, S.A.**<br> (Exact name of registrant as specified in its charter)  |
| **Kingdom of Spain**<br> (State of incorporation<br> or organization) | **None**<br> (I.R.S. Employer<br> Identification No.) |
| **Ciudad Grupo Santander**<br> **28660 Boadilla del Monte (Madrid)**<br> **Spain**<br> (Address of principal executive offices) | **28660** <br> (Zip Code) |
| Securities to be registered pursuant to Section 12(b) of the Act: | Securities to be registered pursuant to Section 12(b) of the Act: |
| Title of each class to be so registered | Name of each exchange on which each class is to be registered |
| **Series SNP-252 4.551% Senior Non Preferred Fixed Rate Notes due 2030** | &nbsp;&nbsp; **New York Stock Exchange** |
| **Series SNP-253 5.127% Senior Non Preferred Fixed Rate Notes due 2035** | **New York Stock Exchange** |
| **Series SNP-254 Senior Non Preferred Floating Rate Notes due 2030** | &nbsp;&nbsp; **New York Stock Exchange** |
| If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c) or (e), check the following box. ⌧ | If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c) or (e), check the following box. ⌧ |
| If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d) or (e), check the following box. □ | If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d) or (e), check the following box. □ |
| If this form relates to the registration of a class of securities concurrently with a Regulation A offering, check the following box. □ | If this form relates to the registration of a class of securities concurrently with a Regulation A offering, check the following box. □ |
| Securities Act registration statement or Regulation A offering statement file number to which this form relates: 333-271955 | Securities Act registration statement or Regulation A offering statement file number to which this form relates: 333-271955 |
| Securities to be registered pursuant to Section 12(g) of the Act: None. | Securities to be registered pursuant to Section 12(g) of the Act: None. |

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**INFORMATION REQUIRED IN REGISTRATION STATEMENT**

The Registrant has filed with the Securities and Exchange Commission (the "Commission") pursuant to Rule 424(b) under the Securities Act of 1933, a prospectus supplement dated October 30, 2025, relating to the Registrant's Senior Non Preferred Floating Rate Notes due 2030, 4.551% Senior Non Preferred Fixed Rate Notes due 2030 and 5.127% Senior Non Preferred Fixed Rate Notes due 2035 (the "Prospectus Supplement"), to a base prospectus dated May 16, 2023 (the "Prospectus") contained in the registration statement of the Registrant on Form F-3ASR (File No. 333-271955) filed with the Commission on May 16, 2023, relating to the securities to be registered hereunder. The Registrant incorporates by reference the Prospectus Supplement and the Prospectus to the extent set forth below.

**Item 1. <u>Description of Registrant's Securities to be Registered</u>**

The information required by this item is incorporated herein by reference to the information contained in the sections captioned "Description of Debt Securities," "Description of Certain Provisions Relating to Debt Securities and Contingent Convertible Capital Securities" and "Taxation" of the Prospectus, and "Description of the Notes" and "Taxation" of the Prospectus Supplement.

**Item 2. <u>Exhibits</u>**

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| | |
|:---|:---|
| [4.1](https://www.sec.gov/Archives/edgar/data/891478/000119312524067954/d779183dex41.htm) | &nbsp;&nbsp;[Senior Non Preferred Debt Securities Indenture, dated as of March 14, 2024, among Banco Santander, S.A., as Issuer, and The Bank of New York Mellon, London Branch, as Trustee (incorporated herein by reference from Exhibit 4.1 to the Form 6-K filed with the Commission on March 14, 2024 (Accession No. 0001193125-24-067954)).](https://www.sec.gov/Archives/edgar/data/891478/000119312524067954/d779183dex41.htm) |
| [4.2](https://www.sec.gov/Archives/edgar/data/891478/000119312525268399/d163735dex41.htm) | &nbsp;&nbsp;[Third Supplemental Indenture, dated as of November 6, 2025, to the Senior Non Preferred Debt Securities Indenture, dated as of March 14, 2024, among Banco Santander, S.A., as Issuer, The Bank of New York Mellon, London Branch, as Trustee, Calculation Agent and Principal Paying Agent, and The Bank of New York Mellon SA/NV, Luxembourg Branch, as Registrar (incorporated herein by reference from Exhibit 4.1 to the Form 6-K filed with the Commission on November 6, 2025 (Accession No. 0001193125-25-268399)).](https://www.sec.gov/Archives/edgar/data/891478/000119312525268399/d163735dex41.htm) |
| [4.3](https://www.sec.gov/Archives/edgar/data/891478/000119312525268399/d163735dex41.htm) | &nbsp;&nbsp;[Form of Global Note for the Senior Non Preferred Floating Rate Notes due 2030 (incorporated herein by reference from Exhibit 4.2 to the Form 6-K filed with the Commission on November 6, 2025 (Accession No. 0001193125-25-268399)).](https://www.sec.gov/Archives/edgar/data/891478/000119312525268399/d163735dex41.htm) |
| [4.4](https://www.sec.gov/Archives/edgar/data/891478/000119312525268399/d163735dex41.htm) | &nbsp;&nbsp;[Form of Global Note for the 4.551% Senior Non Preferred Fixed Rate Notes due 2030 (incorporated herein by reference from Exhibit 4.3 to the Form 6-K filed with the Commission on November 6, 2025 (Accession No. 0001193125-25-268399)).](https://www.sec.gov/Archives/edgar/data/891478/000119312525268399/d163735dex41.htm) |
| [4.5](https://www.sec.gov/Archives/edgar/data/891478/000119312525268399/d163735dex41.htm) | &nbsp;&nbsp;[Form of Global Note for the 5.127% Senior Non Preferred Fixed Rate Notes due 2035 (incorporated herein by reference from Exhibit 4.4 to the Form 6-K filed with the Commission on November 6, 2025 (Accession No. 0001193125-25-268399)).](https://www.sec.gov/Archives/edgar/data/891478/000119312525268399/d163735dex41.htm) |
| [99.1](https://www.sec.gov/Archives/edgar/data/891478/000119312525260533/d29947d424b5.htm) | &nbsp;&nbsp;[The Prospectus and the Prospectus Supplement (incorporated herein to the extent provided above by reference to the Registrant's filing under Rule 424(b) dated October 30, 2025).](https://www.sec.gov/Archives/edgar/data/891478/000119312525260533/d29947d424b5.htm) |

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**SIGNATURE**

Pursuant to the requirements of Section 12 the Securities Exchange Act of 1934, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereto duly authorized.

Banco Santander, S.A.

Issuer

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| | |
|:---|:---|
| By: | /s/ José Antonio Soler |
|  | Name: José Antonio Soler<br> Title: Authorized Representative |

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November 6, 2025