Banco Santander cancels 151M shares in capital cut

After registration, Banco Santander’s share capital is EUR 7,202,943,850.50, represented by 14,405,887,701 shares.

Available on EDGAR 11/12/2026 - 06:07 AM EST Accepted by SEC EDGAR 11/12/2026 - 06:04 AM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Banco Santander, S.A.’s public deed for a EUR 75,297,550 capital reduction was registered on November 11, 2026. The reduction canceled 150,595,100 own shares, approximately 1.03% of the Bank’s share capital.

Following the reduction, share capital is EUR 7,202,943,850.50, represented by 14,405,887,701 shares with a nominal value of EUR 0.50 each. After completion of 11 buyback programs carried out against results since 2021, accumulated capital reductions amount to EUR 1,632,300,019.50; the Bank has repurchased 3,264,600,039 shares since November 2021, approximately 18.8% of its outstanding shares as of that date.

Key Figures

Capital reduction: EUR 75,297,550 Own shares canceled: 150,595,100 shares Share capital reduced: Approximately 1.03% +5 more

8 metrics

Capital reduction EUR 75,297,550 Registered November 11, 2026

Own shares canceled 150,595,100 shares Capital reduction registered November 11, 2026

Share capital reduced Approximately 1.03% Of the Bank’s share capital

Share capital EUR 7,202,943,850.50 Following the reduction

Shares representing share capital 14,405,887,701 shares Following the reduction

Nominal value EUR 0.50 per share Shares representing share capital following the reduction

Shares repurchased 3,264,600,039 shares Since November 2021

Repurchased shares as a share of outstanding shares Approximately 18.8% Outstanding shares as of November 2021

Key Terms

capital reduction, nominal value, own shares

3 terms

capital reduction financial

"public deed of capital reduction"

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

"nominal value of EUR 0.50 each"

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.

own shares financial

"through the cancellation of 150,595,100 own shares"

Shares a company owns in itself are pieces of its stock that it has bought back or is holding in a treasury account instead of being owned by outside investors. For investors this matters because those held shares reduce the number of shares available on the market and can change per-share metrics and voting power—like a shop removing some items from the shelf, which alters the supply and how value is divided among remaining owners.

FAQ

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

How many SAN shares did Banco Santander cancel in November 2026?

Banco Santander canceled 150,595,100 own shares in a capital reduction of EUR 75,297,550, approximately 1.03% of its share capital.

What is Banco Santander’s share capital after the reduction?

Banco Santander’s share capital is EUR 7,202,943,850.50, represented by 14,405,887,701 shares with a nominal value of EUR 0.50 each.

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

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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 November, 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 November 11, 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 28 October 2026 (registry number 43376),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 4 November, on November 11, 2026 the public deed of capital reduction (and consequent Bylaw amendment) for the amount of EUR 75,297,550, through the cancellation of 150,595,100 own shares, representing approximately 1.03% 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 7,202,943,850.50, represented by 14,405,887,701 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, once the eleven buyback programmes carried out against results since 2021 have been completed, the accumulated share capital reduction amounts to EUR 1,632,300,019.50, with the Bank having repurchased 3,264,600,039 shares since November 2021, approximately 18.8% of its outstanding shares as of that date.

Boadilla del Monte (Madrid), 11 November 2026 

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:	November 11, 2026		By:	/s/ Pedro de Mingo Kaminouchi
				Name:	Pedro de Mingo Kaminouchi
				Title:	Head of Corporate Compliance