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 July, 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
|
Item |
|
| |
|
| 1 |
Report of Other Relevant Information dated July 1, 2025 |
Item
1

Banco Santander, S.A., (“Santander” or the “Offeror”)
in accordance with the provisions of the securities market legislation, communicates the following:
OTHER RELEVANT INFORMATION
Further to the communications made on
24 June 2025 (registered under numbers 2784 and 35457) regarding the invitation by Santander to holders of its outstanding €1,500,000,000
4.375 per cent. Non-Step-Up Non-Cumulative Contingent Convertible Perpetual Preferred Tier 1 Securities (ISIN: XS2102912966) (the “Preferred
Securities”) to tender their Preferred Securities for purchase by the Offeror for cash in an aggregate nominal amount of up
to the Maximum Acceptance Amount (the “Offer”), the Offeror now announces the results of the Offer.
Capitalised terms used but not otherwise
defined in this announcement shall have the meaning given to them in the Tender Offer Memorandum.
The Expiration Time for the Offers was
5.00 p.m. (CET) on 30 June 2025.
The Offeror hereby announces that it
will accept for purchase in accordance with the terms and subject to the conditions set out in the Tender Offer Memorandum and at the
relevant Purchase Price, all Preferred Securities validly offered for Sale pursuant to the Offer, without pro-ration, in an aggregate
nominal amount of €466,600,000 (the Acceptance Amount), as set out in the table below.
| Description of Preferred Securities |
ISIN |
Outstanding Nominal Amount |
First Optional Redemption Date |
Purchase Price |
Acceptance Amount |
Pro-ration factor |
| €1,500,000,000 4.375 per cent. Non-Step-Up Non-Cumulative Contingent Convertible Perpetual Preferred Tier 1 Securities |
XS2102912966 |
€1,500,000,000 |
14 January 2026 |
100 per cent.
|
€466,600,000 |
Not Applicable |
Preferred Securities purchased by the Offeror pursuant
to the Offer will be cancelled by the Offeror and will not be re-issued or re-sold. Preferred Securities which have not been validly submitted
or validly submitted but not accepted for purchase pursuant to the Offer will remain outstanding. Following the Settlement Date, there
will be an outstanding nominal amount of Preferred Securities of €1,033,400,000.
Payment of the Tender Consideration in respect
of the Preferred Securities accepted for purchase by the Offeror will occur on the Settlement Date for the Offer which is expected to
be 2 July 2025.
Any requests for information in relation to the
Offers should be directed to the Dealer Managers or the Tender Agent whose contact details are listed below.

DEALER MANAGERS |
| |
Banco Santander, S.A.
Ciudad Grupo Santander
Avenida de Cantabria s/n
28660
Madrid, Spain
Attn: Liability Management
Email: liabilitymanagement@gruposantander.com |
Santander US Capital Markets LLC
437 Madison Avenue, 8th Floor
New York, New York 10022
United States
Tel (U.S. Toll Free): +1 (855) 404-3636
Tel (collect): +1 (212) 350-0660
Attn: Liability Management Team
Email: AmericasLM@santander.us |
| |
|
THE TENDER AGENT
Kroll Issuer Services Limited
The News Building
3 London Bridge Street
London SE1 9SG
United Kingdom
Tel: +44 20 7704 0880
Attn: Scott Boswell
Email: santander@is.kroll.com
Website: https://deals.is.kroll.com/santander |
Boadilla del Monte (Madrid), 1 July 2025
NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION
IN OR INTO OR TO ANY PERSON LOCATED OR RESIDENT IN ANY JURISDICTION WHERE OR TO WHOM IT IS UNLAWFUL TO RELEASE, PUBLISH OR DISTRIBUTE
THIS ANNOUNCEMENT.
IMPORTANT INFORMATION
This announcement must be read in conjunction with
the Tender Offer Memorandum. This announcement and the Tender Offer Memorandum contain important information which should be read carefully
before any decision is made with respect to the Offer. If any Qualifying Holder is in any doubt as to the contents of this announcement,
the Tender Offer Memorandum or the action it should take, it is recommended to seek its own financial, legal, regulatory and tax advice,
including in respect of any tax consequences, immediately from its broker, bank manager, solicitor, accountant or other independent financial,
tax or legal adviser.
The distribution of this announcement and the Tender
Offer Memorandum in certain jurisdictions may be restricted by law. Persons into whose possession this announcement and/or the Tender
Offer Memorandum comes are required by each of the Offeror, the Dealer Managers and the Tender Agent to inform themselves about, and to
observe, any such restrictions.
Notice to U.S. Investors
The proposed transaction relates to the securities
of Banco Santander, S.A., a company incorporated in Spain. Information distributed in connection with the proposed transaction is subject
to Spanish disclosure requirements that are different from those of the United States.
It may be difficult for you to enforce your rights
and any claim you may have arising under the U.S. federal securities laws in respect of the proposed transaction, since the company is
located in Spain and some or all of its officers and directors are residents of Spain. You may not be able to sue the company or its officers
or directors in a Spanish court for violations of the U.S. securities laws. Finally, it may be difficult to compel the company and its
affiliates to subject themselves to a U.S. court’s judgment.
You should be aware that the company may purchase
subject securities otherwise than under the proposed transaction, such as in open market or privately negotiated purchases, at any time
during the pendency of the proposed transaction.
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.
| |
|
Banco Santander, S.A. |
| |
|
|
| Date: |
July 1, 2025 |
|
By: |
/s/ Pedro de Mingo Kaminouchi |
| |
|
|
|
Name: |
Pedro de Mingo Kaminouchi |
| |
|
|
|
Title: |
Head of Corporate Compliance |