Santander repurchases 12,600,000 shares; buyback at 55.3% completion

Rhea-AI Filing Summary

Banco Santander reported progress on its share repurchase. The cash amount of shares purchased to October 29, 2025 totals €940,924,644, representing approximately 55.3% of the maximum investment amount authorized for the Buyback Programme.

Between October 23 and 29, 2025, the bank repurchased 12,600,000 shares across multiple venues (XMAD, CEUX, TQEX, AQEU) at disclosed weighted average prices per day and venue. With these purchases, Banco Santander has repurchased approximately 14.8% of its outstanding shares as of 2021.

Insights

Bank capital markets analyst

Routine buyback update showing €940,924,644 executed (55.3% of plan).

Banco Santander provides a status update on its authorized share repurchase. The filing lists cumulative buyback cash of €940,924,644, which equals 55.3% of the program’s maximum investment amount, and details execution venues and weighted average prices.

The week of transactions covers 12,600,000 shares across XMAD, CEUX, TQEX, and AQEU, indicating continued activity rather than a change in strategy. The bank states it has repurchased approximately 14.8% of outstanding shares as of 2021.

Future disclosures in company filings may specify further execution toward the remaining program capacity and any subsequent cancellations or capital impacts, if applicable.

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

Item
1	Report of Other Relevant Information dated October 30, 2025

 

Item 1

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

OTHER RELEVANT INFORMATION

Reference is made to our notice of inside information of 30 July 2025 (official registry number 2844) (the “Buyback Commencement Communication”), relating to the buyback programme of own shares (the “Buyback Programme”) approved by the Board of Directors of Banco Santander.

Pursuant to article 5 of Regulation (EU) no. 596/2014 on Market Abuse of 16 April 2014, and articles 2.2 and 2.3 of Commission Delegated Regulation (EU) 2016/1052, of 8 March 2016, the Bank informs of the transactions carried out over its own shares between 23 and 29 October 2025 (both inclusive).

The cash amount of the shares purchased to 29 October 2025 as a result of the execution of the Buyback Programme amounts to 940,924,644 Euros, which represents approximately 55.3% of the maximum investment amount of the Buyback Programme. The programme was announced together with its other characteristics through the Buyback Commencement Communication. With these purchases, the Bank has repurchased approximately 14.8% of its outstanding shares as of 2021.

Date	Security	Transaction	Trading venue	Number of shares	Weighted average price (€)
23/10/2025	SAN	Purchase	XMAD	2,118,440	8.4210
23/10/2025	SAN	Purchase	CEUX	159,694	8.4249
23/10/2025	SAN	Purchase	TQEX	83,569	8.4228
23/10/2025	SAN	Purchase	AQEU	38,297	8.4288
24/10/2025	SAN	Purchase	XMAD	2,661,005	8.3605
24/10/2025	SAN	Purchase	CEUX	84,491	8.3771
24/10/2025	SAN	Purchase	TQEX	28,921	8.3664
24/10/2025	SAN	Purchase	AQEU	25,583	8.3698
27/10/2025	SAN	Purchase	XMAD	1,991,538	8.4883
27/10/2025	SAN	Purchase	CEUX	125,959	8.4894
27/10/2025	SAN	Purchase	TQEX	38,574	8.4843
27/10/2025	SAN	Purchase	AQEU	43,929	8.4824
28/10/2025	SAN	Purchase	XMAD	1,778,122	8.5525
28/10/2025	SAN	Purchase	CEUX	139,178	8.5596
28/10/2025	SAN	Purchase	TQEX	51,772	8.5669
28/10/2025	SAN	Purchase	AQEU	30,928	8.5591
29/10/2025	SAN	Purchase	XMAD	2,650,000	8.8300
29/10/2025	SAN	Purchase	CEUX	273,706	8.7894
29/10/2025	SAN	Purchase	TQEX	88,482	8.8204
29/10/2025	SAN	Purchase	AQEU	187,812	8.8057
			TOTAL	12,600,000

1 

 

Issuer name: Banco Santander, S.A. - LEI 5493006QMFDDMYWIAM13

Reference of the financial instrument: ordinary shares - Code ISIN ES0113900J37

Detailed information of the transactions carried out within the referred period is attached as Annex I.

Boadilla del Monte (Madrid),30 October 2025

2 

 

ANNEX I

Detailed information on each of the transactions carried out within the context of the Buy-back Programme between 23/10/2025 and 29/10/2025 (both inclusive)

(https://www.santander.com/content/dam/santander-com/es/documentos/cumplimiento/do-anexo-i-23-a-29-10-2025.pdf)

3 

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:	October 30, 2025		By:	/s/ Pedro de Mingo Kaminouchi
				Name:	Pedro de Mingo Kaminouchi
				Title:	Head of Corporate Compliance

FAQ

What did Banco Santander (SAN) disclose in this 6-K?

It reported progress on its share buyback, with a cash amount of €940,924,644 purchased to October 29, 2025.

How much of the buyback’s maximum investment has been executed by SAN?

Approximately 55.3% of the Buyback Programme’s maximum investment amount.

How many shares did SAN repurchase between Oct 23 and Oct 29, 2025?

A total of 12,600,000 shares across XMAD, CEUX, TQEX, and AQEU.

What cumulative impact did SAN cite relative to its share base?

It has repurchased approximately 14.8% of its outstanding shares as of 2021.

Which trading venues were used for the buyback during the reported week?

Purchases were executed on XMAD, CEUX, TQEX, and AQEU.

Where can I find detailed trade-by-trade data for this period?

In Annex I via the provided link to the bank’s document repository.