Banco Santander buyback spending reaches €1.18B

By October 7, cumulative purchases represented approximately 64.4% of the buyback programme’s maximum investment amount.

Rhea-AI Filing Summary

Banco Santander, S.A. purchased 21,600,000 ordinary shares under its buyback programme between October 1 and October 7, 2026, inclusive. As of October 7, 2026, the cash amount of shares purchased under the programme was €1,175,196,981, representing approximately 64.4% of the programme’s maximum investment amount. The company also stated that programme purchases represented approximately 18.5% of its outstanding shares as of 2021.

Key Figures

Ordinary shares purchased: 21,600,000 ordinary shares Cash amount of shares purchased: €1,175,196,981 Share of maximum investment amount: approximately 64.4% +1 more

4 metrics

Ordinary shares purchased 21,600,000 ordinary shares Buyback transactions between October 1 and October 7, 2026, inclusive

Cash amount of shares purchased €1,175,196,981 Cumulative under the programme as of October 7, 2026

Share of maximum investment amount approximately 64.4% Represented by the cash amount of shares purchased as of October 7, 2026

Outstanding shares repurchased approximately 18.5% Programme purchases relative to outstanding shares as of 2021

Key Terms

Buyback Programme, weighted average price, maximum investment amount, outstanding shares

4 terms

Buyback Programme financial

"buyback programme of own shares"

weighted average price financial

"Weighted average price (€)"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

maximum investment amount financial

"64.4% of the maximum investment amount"

outstanding shares financial

"18.5% of its outstanding shares as of 2021"

Outstanding shares are the total number of a company's stock units that are owned by all external investors and insiders, excluding any shares the company holds itself. They matter to investors because they determine each shareholder’s slice of ownership, how company value is divided per share (affecting price and earnings-per-share calculations), and the weight of voting power—like how slicing a pizza into more or fewer pieces changes the size of each person’s share.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many shares did Banco Santander (SAN) buy back from October 1 to October 7, 2026?

Banco Santander purchased 21,600,000 ordinary shares under its buyback programme between October 1 and October 7, 2026, inclusive.

How much had Banco Santander (SAN) spent on its buyback by October 7, 2026?

As of October 7, 2026, the cash amount of shares purchased under the programme was €1,175,196,981, approximately 64.4% of its maximum investment amount.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 6-K: How Foreign Companies Report to the SEC →

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Available on EDGAR 10/08/2026 - 06:10 AM Accepted by SEC EDGAR 10/08/2026 - 06:09 AM Learn about SEC filing dates

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, 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

Item
1	Report of Other Relevant Information dated October 8, 2026

 

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 10 August 2026 (official registry number 3336) (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 1 and 7 October (both inclusive).

The cash amount of the shares purchased to 7 October 2026 as a result of the execution of the Buyback Programme amounts to 1,175,196,981 Euros, which represents approximately 64.4% 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 18.5% of its outstanding shares as of 2021.

Date	Security	Transaction	Trading venue	Number of shares	Weighted average price (€)
01/10/2026	SAN	Purchase	XMAD	4,350,000	12.0668
01/10/2026	SAN	Purchase	CEUX	2,130,593	11.9834
01/10/2026	SAN	Purchase	TQEX	244,137	12.0385
01/10/2026	SAN	Purchase	AQEU	675,270	12.0398
02/10/2026	SAN	Purchase	XMAD	4,243,329	11.7531
02/10/2026	SAN	Purchase	CEUX	2,007,735	11.7595
02/10/2026	SAN	Purchase	TQEX	261,074	11.8182
02/10/2026	SAN	Purchase	AQEU	687,862	11.7801
05/10/2026	SAN	Purchase	XMAD	2,347,595	12.1355
05/10/2026	SAN	Purchase	CEUX	377,059	12.1631
05/10/2026	SAN	Purchase	TQEX	98,173	12.2015
05/10/2026	SAN	Purchase	AQEU	177,173	12.1868
06/10/2026	SAN	Purchase	XMAD	1,057,171	12.4720
06/10/2026	SAN	Purchase	CEUX	54,980	12.4610
06/10/2026	SAN	Purchase	TQEX	38,084	12.4744
06/10/2026	SAN	Purchase	AQEU	49,765	12.4687
07/10/2026	SAN	Purchase	XMAD	2,391,111	12.1757
07/10/2026	SAN	Purchase	CEUX	223,569	12.1718
07/10/2026	SAN	Purchase	TQEX	79,559	12.2176
07/10/2026	SAN	Purchase	AQEU	105,761	12.2108
			TOTAL	21,600,000

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), 8 October 2026

1 

 

ANNEX I

Detailed information on each of the transactions carried out within the context of the Buy-back Programme between 01/10/2026 and 07/10/2026 (both inclusive)

(https://www.santander.com/content/dam/santander-com/es/documentos/cumplimiento/do-anexo-i-1-a-7-octubre-2026-es.pdf)

2 

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 8, 2026		By:	/s/ Pedro de Mingo Kaminouchi
				Name:	Pedro de Mingo Kaminouchi
				Title:	Head of Corporate Compliance