Banco Santander cancels 3.08% of share capital

Banco Santander registers a new capital reduction, taking total cancelled shares since 2021 to about 18% of its starting share count.

Rhea-AI Filing Summary

Banco Santander, S.A. (SAN) reports the registration of a new capital reduction linked to its share buyback activity. On September 9, 2026, a capital reduction of EUR 231,341,569.50 was registered through the cancellation of 462,683,139 treasury shares, representing approximately 3.08% of its share capital.

Following this operation, Banco Santander’s share capital is EUR 7,278,241,400.50, represented by 14,556,482,801 shares with a nominal value of EUR 0.50 each, all of the same class and rights. Since 2021, accumulated capital reductions tied to buyback programmes total EUR 1,557,002,469.50, with 3,114,004,939 shares repurchased and cancelled, about 18% of the outstanding shares at the start of that period.

Positive

• Banco Santander has cancelled 18% of its starting share count since 2021 through buyback-linked capital reductions, totaling 3,114,004,939 shares and EUR 1,557,002,469.50, which reduces the number of shares among which future earnings and dividends are distributed.

Negative

• None.

Key Figures

Latest capital reduction amount: EUR 231,341,569.50 Shares cancelled in latest reduction: 462,683,139 shares Portion of share capital cancelled: 3.08% +5 more

8 metrics

Latest capital reduction amount EUR 231,341,569.50 Registered on September 9, 2026 through cancellation of own shares

Shares cancelled in latest reduction 462,683,139 shares Own shares cancelled, representing approximately 3.08% of share capital

Portion of share capital cancelled 3.08% Proportion of Banco Santander’s share capital cancelled in the latest operation

Share capital after reduction EUR 7,278,241,400.50 Total share capital following registration of the September 2026 reduction

Shares outstanding after reduction 14,556,482,801 shares Number of shares representing Banco Santander’s share capital after the reduction

Accumulated capital reduction since 2021 EUR 1,557,002,469.50 Total capital reduction from share buyback programmes since 2021

Total shares repurchased and cancelled since 2021 3,114,004,939 shares Shares cancelled via buyback-related capital reductions since 2021

Portion of starting shares cancelled since 2021 18% Approximate percentage of outstanding shares at the start of the period that have been cancelled

Key Terms

capital reduction, nominal value, share buyback programmes, Commercial Registry, +1 more

5 terms

capital reduction financial

"the public deed of capital reduction (and consequent Bylaw amendment)"

A capital reduction is a legal move where a company shrinks the amount of money recorded as its official share capital, either by cancelling shares, lowering the value of each share, or returning cash to shareholders. Investors care because it changes the company’s balance sheet and can alter how much each remaining share represents—like pruning a tree to concentrate fruit or giving back some of the harvest—potentially affecting ownership percentages, per‑share metrics and the stock’s market value.

nominal value financial

"represented by 14,556,482,801 shares with a nominal value of EUR 0.50"

Nominal value is the stated or face amount assigned to a financial instrument — for shares it’s the par value printed on the stock certificate, and for money or returns it can mean the number not adjusted for inflation. Think of it like a price tag on an item versus its buying power: the tag tells you the label, but not how much you can actually buy. Investors care because nominal values affect accounting, legal capital, dividend calculations and comparisons over time when inflation may distort real worth.

share buyback programmes financial

"resulting from the execution of the share buyback programmes"

Commercial Registry regulatory

"was registered with the Commercial Registry of Santander"

share capital financial

"the Bank’s share capital has been set at EUR 7,278,241,400.50"

Share capital is the total amount of money a company raises by selling pieces of itself, called shares, to investors. It’s like a company’s savings from many owners, which helps fund its growth and operations. This money matters because it shows how much the company has raised from shareholders and how it’s financed its business.

FAQ

What capital reduction did Banco Santander (SAN) register on September 9, 2026?

Banco Santander registered a capital reduction of EUR 231,341,569.50 on September 9, 2026, by cancelling 462,683,139 own shares, which represented approximately 3.08% of its share capital at the time.

How many shares does Banco Santander (SAN) have in issue after the latest capital reduction?

After the latest capital reduction, Banco Santander’s share capital is represented by 14,556,482,801 shares, each with a nominal value of EUR 0.50, and all shares belong to the same class with the same rights.

What is Banco Santander’s (SAN) total share capital after the September 2026 reduction?

Following the September 2026 capital reduction, Banco Santander’s share capital stands at EUR 7,278,241,400.50, represented by 14,556,482,801 shares with a nominal value of EUR 0.50 each.

How much capital has Banco Santander (SAN) reduced through buybacks since 2021?

Since 2021, Banco Santander’s accumulated capital reduction from share buyback programmes is EUR 1,557,002,469.50. This results from repurchasing and cancelling 3,114,004,939 shares over that period.

What percentage of its shares has Banco Santander (SAN) cancelled since 2021?

Since 2021, Banco Santander has repurchased and cancelled 3,114,004,939 shares, which the company states represents approximately 18% of its outstanding shares at the start of that period.

Do all Banco Santander (SAN) shares have the same rights after the capital reduction?

Yes. Banco Santander states that all 14,556,482,801 shares after the capital reduction belong to the same class and have the same rights.

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

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Available on EDGAR 09/09/2026 - 12:02 PM Accepted by SEC EDGAR 09/09/2026 - 12:01 PM 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 September, 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 September 9, 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

Further to the notice of other relevant information registered with the Spanish National Securities Market Commission (Comisión Nacional del Mercado de Valores) on 21 August 2026 (registry number 42494), it is communicated that, following the execution of the capital reduction referred to in such notice by decision of the Bank’s executive committee at its meeting held on 1 September, on 9 September 2026 the public deed of capital reduction (and consequent Bylaw amendment) for the amount of EUR 231,341,569.50, through the cancellation of 462,683,139 own shares, representing approximately 3.08% of the Bank’s share capital, was registered with the Commercial Registry of Santander.

Consequently, the Bank’s share capital has been set at EUR 7,278,241,400.50, represented by 14,556,482,801 shares with a nominal value of EUR 0.50 each. All of the shares belong to the same class and have the same rights.

It is stated for the record that, the accumulated share capital reduction of Banco Santander resulting from the execution of the share buyback programmes and the corresponding share capital reductions carried out since 2021 amounts to EUR 1,557,002,469.50. The Bank has repurchased and cancelled 3,114,004,939 shares since that date, representing approximately 18% of its outstanding shares as of the start of such period.

Boadilla del Monte (Madrid), 9 September 2026

1 

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:	September 9, 2026		By:	/s/ Pedro de Mingo Kaminouchi
				Name:	Pedro de Mingo Kaminouchi
				Title:	Head of Corporate Compliance