# EDGAR Filing Document

**Accession Number:** 0000891478
**File Stem:** 0000950103-26-008751
**Filing Date:** 2026-6
**Character Count:** 11383
**Document Hash:** 72e8b7393f5d1adf88ebdc8c6b66ab7f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950103-26-008751.hdr.sgml**: 20260610

**ACCESSION NUMBER**: 0000950103-26-008751

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260610

**FILED AS OF DATE**: 20260610

**DATE AS OF CHANGE**: 20260610

**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:** 261077925

**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 June, 2026

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 June 10, 2026 |

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![](image_001.jpg)

**Item 1**

Banco Santander, S.A., in accordance with the provisions of the securities market legislation, communicates the following:

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

**BANCO SANTANDER, S.A. ANNOUNCES RESULTS OF TENDER OFFER FOR ONE SERIES OF ITS U.S. DOLLAR-DENOMINATED ADDITIONAL TIER 1 SECURITIES**

Further to the communication of inside information made on May 27, 2026 (registered under number 3240), Banco Santander, S.A. (the "**Offeror**" or "**Banco Santander**") is today announcing the results of its tender offer (the "**Offer**") to purchase for cash up to $850,000,000 (the "**Maximum Offer Amount**") of its outstanding 4.750% Non-Step-Up Non-Cumulative Contingent Convertible Perpetual Preferred Tier 1 Securities of Banco Santander (the "**Securities**").

The Offer was made on the terms and subject to the conditions set out in the Offer to Purchase dated May 27, 2026 (the "**Offer to Purchase**"). Capitalized terms not otherwise defined in this announcement have the same meaning as in the Offer to Purchase.

Based on information provided by the Tender Agent, $701,600,000 aggregate principal amount of the Securities listed in the table below were validly tendered and not validly withdrawn by 5:00 p.m., New York City time, on June 9, 2026 (the "**Expiration Deadline**"), as more fully set forth below. Banco Santander has accepted all Securities that were validly tendered and not validly withdrawn prior to the Expiration Deadline, without proration. The Settlement Date is expected to be June 11, 2026.

Securities purchased by Banco Santander pursuant to the Offer will be cancelled and will not be re-issued or re-sold. Securities which have not been validly submitted and accepted for purchase pursuant to the Offer will remain outstanding. The aggregate principal amount of Securities outstanding after the Offer is $298,400,000.

The table below sets forth, among other things, the principal amount of the Securities validly tendered and accepted pursuant to the Offer:

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Securities** | **CUSIP / ISIN** | **Purchase Price(1)** | **Tender Consideration(2)** | **Aggregate Principal Amount Accepted** | **Aggregate Principal Amount Outstanding After the Offer** |
| 4.750% Non-Step-Up Non-Cumulative Contingent Convertible Perpetual Preferred Tier 1 Securities | CUSIP No. 05971K AH2 / ISIN: US05971KAH23 | 100.1% | $1,001 per $1,000 of nominal amount tendered, provided that Securities may only be tendered in multiples of $200,000 | $701600000 | $298400000 |

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(1) The Purchase Price shall be 100.1% of the
 nominal amount of the Securities accepted for purchase pursuant to the Offer. Securities
 could only be tendered in multiples of $200,000, being the liquidation preference of the
 Securities.

(2) The Tender Consideration payable on the
 Settlement Date to a holder whose Securities are validly tendered and accepted for purchase
 by the Offeror pursuant to the Offer will be an amount per $1,000 of nominal amount of such
 tendered securities in U.S. dollars equal to the product of (x) the Purchase Price and (y)
 the nominal amount of such Securities. In addition to the Tender Consideration, holders
 whose Securities are validly tendered and accepted for purchase will receive the Distribution
 Payment, if any, in respect of such Securities. With respect to any Securities
 validly tendered and accepted for purchase by the Offeror pursuant to the Offer, the "Distribution
 Payment" is an amount in cash (rounded to the nearest $0.01, with $0.005 being rounded
 upwards) equal to the Distribution on such Securities. "Distributions" consist
 of distributions accrued and unpaid (if any) on the Securities from (and including) the distribution
 payment date in respect of such Securities immediately preceding the Settlement Date to (but
 excluding) the Settlement Date, calculated in accordance with the terms and conditions of
 the Securities, unless distributions on the Securities for that period are cancelled.

D.F. King & Co., Inc. acted as tender agent for the Offer. Santander US Capital Markets LLC acted as Dealer Manager for the Offer. Questions regarding the Offer should be directed to:

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| | |
|:---|:---|
| **Tender Agent** |  |
| D.F. King & Co., Inc. | Email: san@dfking.com |
| 28 Liberty Street, 53<sup>rd</sup> Floor<br> New York, New York 10005<br> United States | Banks and Brokers call: (646) 963-9141<br> All others call toll free: (866) 340-7108<br> Website: www.dfking.com/santander |
| **Dealer Manager** |  |
| Santander US Capital Markets LLC | 437 Madison Avenue<br> New York, New York 10022<br> United States<br>Tel (U.S. Toll Free): +1 (855) 404-3636<br> Tel (collect): +1 (212) 350-0660<br> Attn: Liability Management Team<br> Email (Americas): <u>AmericasLM@santander.us</u><br> Email (Europe): LiabilityManagement@gruposantander.com |

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Boadilla del Monte (Madrid), June 10, 2026

**Disclaimer**

This announcement and the Offer to Purchase (including the documents incorporated by reference therein) contain important information which should be read carefully. If you are in any doubt as to the contents of this announcement or the Offer to Purchase or the action you should take, you are recommended to seek your own financial, legal, regulatory and tax advice, including as to any tax consequences, immediately from your stockbroker, bank manager, attorney, accountant or other independent financial, tax or legal adviser.

**Additional Information in Respect of the Offer and Where to Find It**

Banco Santander has filed with the Securities and Exchange Commission (the "**SEC**") a tender offer statement on Schedule TO, accompanied by the Offer to Purchase and related documents relating to the Offer. Holders are advised to read carefully the tender offer statement, the Offer to Purchase and other documents which Banco Santander will file with the SEC as they contain important information about the Offer. Copies of these documents are available for free by visiting EDGAR on the SEC website at www.sec.gov. In addition, copies of the Schedule TO and the documents filed with it may be obtained free of charge by contacting Investor Relations, Ciudad Grupo Santander, Avenida de Cantabria s/n, 28660 Boadilla del Monte, Madrid, Spain (telephone: (011) 34-91-259-6520).

**Forward-Looking Statements**

This announcement contains certain forward-looking statements within the meaning of Section 21E of the US Securities Exchange Act of 1934, as amended, and section 27A of the US Securities Act of 1933, as amended, with

respect to Banco Santander, S.A. together with its subsidiaries (the "**Group**") and its current goals and expectations. Statements that are not historical or current facts, including statements about the Group's or its directors' and/or management's beliefs and expectations, are forward looking statements. Words such as, without limitation, 'believes', 'achieves', 'anticipates', 'estimates', 'expects', 'targets', 'should', 'intends', 'aims', 'projects', 'plans', 'potential', 'will', 'would', 'could', 'considered', 'likely', 'may', 'seek', 'estimate', 'probability', 'goal', 'objective', 'deliver', 'endeavour', 'prospects', 'optimistic' and similar expressions or variations on these expressions are intended to identify forward looking statements. These statements concern or may affect future matters, including but not limited to matters, influences and factors which are beyond the Group's control. Please refer to the latest Annual Report on Form 20-F filed by Banco Santander, S.A. with the US Securities and Exchange Commission (the SEC), which is available on the SEC's website at www.sec.gov, for a discussion of certain factors and risks. Banco Santander, S.A. may also make or disclose written and/or oral forward-looking statements in other written materials and in oral statements made by the directors, officers or employees of Banco Santander, S.A. to third parties, including financial analysts.

Except as required by any applicable law or regulation, the forward-looking statements contained in this document are made as of today's date, and the Group expressly disclaims any obligation or undertaking to release publicly any updates or revisions to any forward looking statements contained in this document whether as a result of new information, future events or otherwise. The information, statements and opinions contained in this document do not constitute a public offer under any applicable law or an offer to sell any securities or financial instruments or any advice or recommendation with respect to such securities or financial instruments.

**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: | June 10, 2026 | 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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