Banco Santander has repurchased 18% of 2021 shares

Q: What did Banco Santander (SAN) announce in this August 2026 report?

Banco Santander reported the execution of its share Buyback Programme, stating that by 26 August 2026 it had spent €161,979,040 repurchasing its own shares, equal to about 8.9% of the programme’s maximum investment amount.

Q: How much of its buyback programme has Banco Santander (SAN) used so far?

By 26 August 2026, Banco Santander had spent €161,979,040 on buybacks, which the bank states represents approximately 8.9% of the maximum investment amount authorised for the Buyback Programme.

Q: What portion of Banco Santander’s share capital has been repurchased under the programme?

Banco Santander states that, with the reported purchases, it has repurchased approximately 18% of its outstanding shares as of 2021 through the Buyback Programme.

Banco Santander, S.A.

Filing Impact

(Neutral)

Filing Sentiment

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Form Type

6-K

Rhea-AI Filing Summary

Banco Santander, S.A. (SAN) reports progress on its previously announced share buyback programme of its own shares. As of 26 August 2026, the bank has spent €161,979,040 repurchasing shares under this programme, which represents approximately 8.9% of the programme’s maximum investment amount.

The bank states that, with these purchases, it has repurchased approximately 18% of its outstanding shares as of 2021. Between 24 and 26 August 2026, it bought a total of 12,800,000 shares across several trading venues at weighted average prices around €12.62–€12.71 per share.

Positive

Approximately 18% of 2021 outstanding shares repurchased through the buyback programme, indicating a substantial reduction in share count over time.
€161.98 million already deployed in buybacks, reflecting active execution of the authorised capital return programme.

Negative

None.

Key Figures

Cash amount spent on buybacks: €161,979,040 Share of maximum investment used: 8.9% Shares repurchased in period: 12,800,000 shares +4 more

7 metrics

Cash amount spent on buybacks €161,979,040 Total spent under the Buyback Programme as of 26 August 2026

Share of maximum investment used 8.9% Portion of the Buyback Programme’s maximum investment amount used by 26 August 2026

Shares repurchased in period 12,800,000 shares Total shares bought between 24 and 26 August 2026

Weighted average price on XMAD (24/08/2026) €12.6456 Average purchase price per share on XMAD on 24 August 2026

Weighted average price on XMAD (25/08/2026) €12.6545 Average purchase price per share on XMAD on 25 August 2026

Weighted average price on XMAD (26/08/2026) €12.7146 Average purchase price per share on XMAD on 26 August 2026

Cumulative share capital reduction 18% Approximate share of outstanding shares as of 2021 repurchased through the Buyback Programme

Key Terms

Buyback Programme, inside information, Regulation (EU) no. 596/2014 on 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

"Reference is made to our notice of inside information of 10 August 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.

Regulation (EU) no. 596/2014 on Market Abuse regulatory

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

Commission Delegated Regulation (EU) 2016/1052 regulatory

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

ordinary shares financial

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

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

FAQ

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

What did Banco Santander (SAN) announce in this August 2026 report?

Banco Santander reported the execution of its share Buyback Programme, stating that by 26 August 2026 it had spent €161,979,040 repurchasing its own shares, equal to about 8.9% of the programme’s maximum investment amount.

How many Banco Santander (SAN) shares were repurchased between 24 and 26 August 2026?

Between 24 and 26 August 2026, Banco Santander repurchased a total of 12,800,000 shares of its ordinary stock across several European trading venues, including XMAD, CEUX, TQEX and AQEU.

What prices did Banco Santander (SAN) pay for the buybacks on 24–26 August 2026?

During 24–26 August 2026, Banco Santander’s weighted average purchase prices ranged from about €12.6199 to €12.7146 per share across the different venues, with individual venue averages around €12.62–€12.71.

How much of its buyback programme has Banco Santander (SAN) used so far?

By 26 August 2026, Banco Santander had spent €161,979,040 on buybacks, which the bank states represents approximately 8.9% of the maximum investment amount authorised for the Buyback Programme.

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

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Available on EDGAR 08/27/2026 - 06:08 AM EDT Accepted by SEC EDGAR 08/27/2026 - 06:08 AM EDT

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

Form 40-F

Banco Santander, S.A.

TABLE OF CONTENTS

Item

1	Report of Other Relevant Information dated August 27, 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 24 and 26 August (both inclusive).

The cash amount of the shares purchased to 26 August 2026 as a result of the execution of the Buyback Programme amounts to 161,979,040 Euros, which represents approximately 8.9% 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% of its outstanding shares as of 2021.

Date	Security	Transaction	Trading venue	Number of shares	Weighted average price (€)
24/08/2026	SAN	Purchase	XMAD	3,766,794	12.6456
24/08/2026	SAN	Purchase	CEUX	643,998	12.6476
24/08/2026	SAN	Purchase	TQEX	189,866	12.6199
24/08/2026	SAN	Purchase	AQEU	199,342	12.6562
25/08/2026	SAN	Purchase	XMAD	3,600,000	12.6545
25/08/2026	SAN	Purchase	CEUX	1,496,810	12.6185
25/08/2026	SAN	Purchase	TQEX	283,158	12.6458
25/08/2026	SAN	Purchase	AQEU	620,032	12.6313
26/08/2026	SAN	Purchase	XMAD	1,150,000	12.7146
26/08/2026	SAN	Purchase	CEUX	396,403	12.7113
26/08/2026	SAN	Purchase	TQEX	189,241	12.7057
26/08/2026	SAN	Purchase	AQEU	264,356	12.7112
			TOTAL	12,800,000

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), 27 August 2026

ANNEX I

Detailed information on each of the transactions carried out within the context of the Buy-back Programme between 24/08/2026 and 26/08/2026 (both inclusive)

(https://www.santander.com/content/dam/santander-com/es/documentos/cumplimiento/do-anexo-i-24-a-26-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 27, 2026	By:	/s/ Pedro de Mingo Kaminouchi
			Name:	Pedro de Mingo Kaminouchi
			Title:	Head of Corporate Compliance

Source: View Original Filing on SEC EDGAR