Banco Santander details progress of major share buyback

Banco Santander, S.A. reports further progress on its Board-approved buyback programme of its own shares.

Rhea-AI Filing Summary

Banco Santander, S.A. reports further progress on its Board-approved buyback programme of its own shares. Between 30 July and 5 August 2026, it repurchased 17,500,000 ordinary shares (ISIN ES0113900J37) on the Spanish market (XMAD) and the CEUX venue at weighted average prices between €12.1766 and €12.7466 per share.

As of 5 August 2026, the accumulated cash amount invested in the Buyback Programme totals €4,392,508,241, which the bank states represents approximately 87.3% of the programme’s maximum investment amount. The bank indicates that, with these purchases, it has repurchased approximately 17.7% of its outstanding shares as of 2021. Detailed trade-by-trade information for the period is provided in an annex.

Key Figures

Cash invested in buyback: €4,392,508,241 Share of programme used: 87.3% Shares repurchased (period): 17,500,000 shares +3 more

6 metrics

Cash invested in buyback €4,392,508,241 Total cash amount of shares purchased under the Buyback Programme as of 5 August 2026

Share of programme used 87.3% Portion of the Buyback Programme’s maximum investment amount represented by purchases to 5 August 2026

Shares repurchased (period) 17,500,000 shares Total shares bought between 30 July and 5 August 2026 across XMAD and CEUX

Repurchased vs. 2021 outstanding 17.7% Approximate proportion of outstanding shares as of 2021 repurchased through the Buyback Programme

Weighted avg price 30/07/2026 €12.1766 Weighted average purchase price per share on XMAD on 30 July 2026

Weighted avg price 05/08/2026 €12.7466 Weighted average purchase price per share on XMAD on 5 August 2026

Key Terms

Buyback Programme, inside information, Market Abuse, Commission Delegated Regulation (EU) 2016/1052, +1 more

5 terms

Buyback Programme financial

"relating to the buyback programme of own shares (the “Buyback Programme”)"

inside information regulatory

"our notice of inside information of 4 February 2026"

Information not available to the public that, if known, would likely cause a company’s stock or bonds to rise or fall—for example, undisclosed earnings, deals, product results, or management plans. It matters because trading on that information gives an unfair advantage, can distort market prices, and is typically illegal or subject to strict rules, so investors watch for proper disclosure and compliance to protect fair, transparent markets.

Market Abuse regulatory

"Pursuant to article 5 of Regulation (EU) no. 596/2014 on Market Abuse"

Market abuse is illegal or unethical behavior that distorts the price or fairness of buying and selling financial assets, such as using secret information to trade, spreading false or misleading news, or creating fake buying and selling to give a false impression of demand. It matters to investors because it can cause unfair losses, unreliable prices and legal or reputational fallout; like cheating in a game or tampering with a scale, it destroys confidence that markets reflect true value.

Commission Delegated Regulation (EU) 2016/1052 regulatory

"articles 2.2 and 2.3 of Commission Delegated Regulation (EU) 2016/1052"

weighted average price financial

"Number of shares | 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.

FAQ

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

What did Banco Santander (SAN) disclose about its current share buyback?

Banco Santander reported continued execution of its Board-approved Buyback Programme, repurchasing 17.5 million shares between 30 July and 5 August 2026 and bringing total invested cash since commencement to €4,392,508,241, equivalent to 87.3% of the programme’s maximum investment amount.

How much has Banco Santander (SAN) invested in its buyback programme so far?

By 5 August 2026, Banco Santander had invested €4,392,508,241 in purchasing its own shares under the Buyback Programme. The bank states this represents approximately 87.3% of the maximum investment amount authorised, indicating the programme is significantly advanced toward its stated limit.

What portion of Banco Santander (SAN) shares has been repurchased under the programme?

Banco Santander states that, after these purchases, it has repurchased approximately 17.7% of its outstanding shares as of 2021. This percentage reflects cumulative buybacks under the programme relative to the bank’s share capital outstanding in that base year.

How many Banco Santander (SAN) shares were bought between 30 July and 5 August 2026?

Over 30 July to 5 August 2026, Banco Santander repurchased a total of 17,500,000 shares. These transactions were split across the Spanish market (XMAD) and the CEUX trading venue, with multiple daily purchases contributing to the reported aggregate number of shares.

At what prices did Banco Santander (SAN) repurchase shares during this period?

During 30 July to 5 August 2026, Banco Santander bought shares at weighted average prices ranging from €12.1766 to €12.7466. Each trading day’s purchases on XMAD and CEUX carried its own reported weighted average price within that range.

On which trading venues did Banco Santander (SAN) execute the buyback trades?

The bank executed its share repurchases on the Spanish exchange XMAD and the CEUX trading venue. The reported period totals include multiple transactions on both venues, each with a separately disclosed number of shares and weighted average purchase price in euros.

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 08/06/2026 - 06:08 AM Accepted by SEC EDGAR 08/06/2026 - 06:08 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 August, 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 August 6, 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 4 February 2026 (official registry number 3077) (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 30 July and 5 August (both inclusive).

The cash amount of the shares purchased to 5 August 2026 as a result of the execution of the Buyback Programme amounts to 4,392,508,241 Euros, which represents approximately 87.3% 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 17.7% of its outstanding shares as of 2021.

Date	Security	Transaction	Trading venue	Number of shares	Weighted average price (€)
30/07/2026	SAN	Purchase	XMAD	2,000,000	12.1766
31/07/2026	SAN	Purchase	XMAD	3,000,000	12.3499
31/07/2026	SAN	Purchase	CEUX	1,500,000	12.3494
03/08/2026	SAN	Purchase	XMAD	3,000,000	12.4900
03/08/2026	SAN	Purchase	CEUX	1,000,000	12.4900
04/08/2026	SAN	Purchase	XMAD	2,500,000	12.6358
04/08/2026	SAN	Purchase	CEUX	1,000,000	12.6356
05/08/2026	SAN	Purchase	XMAD	2,500,000	12.7466
05/08/2026	SAN	Purchase	CEUX	1,000,000	12.7460
			TOTAL	17,500,000

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), 6 August 2026

 

ANNEX I

Detailed information on each of the transactions carried out within the context of the Buy-back Programme between 30/07/2026 and 05/08/2026 (both inclusive)

(https://www.santander.com/content/dam/santander-com/es/documentos/cumplimiento/do-anexo-i-30-julio-a-05-agosto-2026-es.pdf))

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:	August 6, 2026		By:	/s/ Pedro de Mingo Kaminouchi
				Name:	Pedro de Mingo Kaminouchi
				Title:	Head of Corporate Compliance