Banco Santander, S.A. 6-K Filing

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• dp237030_6k.htm (6-K) — 53KB
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• 0000950103-25-014400.txt ( ) — 58KB

From the Filing

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, 2025 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 6, 2025 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 30 July 2025 (official registry number 2844) (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 October and 5 November 2025 (both inclusive). The cash amount of the shares purchased to 5 November 2025 as a result of the execution of the Buyback Programme amounts to 1,055,750,294 Euros, which represents approximately 62.1% 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 14.9% of its outstanding shares as of 2021. Date Security Transaction Trading venue Number of shares Weighted average price (€) 30/10/ 2025 SAN Purchase XMAD 2,700,000 8.7320 30/10/ 2025 SAN Purchase CEUX 521,329 8.7239 30/10/ 2025 SAN Purchase TQEX 124,564 8.7375 30/10/ 2025 SAN Purchase AQEU 254,107 8.7468 31/10/ 2025 SAN Purchase XMAD 1,350,000 8.7832 31/10/ 2025 SAN Purchase CEUX 695,776 8.7696 31/10/ 2025 SAN Purchase TQEX 181,622 8.7710 31/10/ 2025 SAN Purchase AQEU 272,602 8.7696 03/11/ 2025 SAN Purchase XMAD 1,450,000 8.8651 03/11/ 2025 SAN Purchase CEUX 632,185 8.8461 03/11/ 2025 SAN Purchase TQEX 165,781 8.8452 03/11/ 2025 SAN Purchase AQEU 252,034 8.8442 04/11/ 2025 SAN Purchase XMAD 1,800,000 8.7098 04/11/ 2025 SAN Purchase CEUX 511,867 8.6982 04/11/ 2025 SAN Purchase TQEX 195,598 8.6987 04/11/ 2025 SAN Purchase AQEU 192,535 8.7002 05/11/ 2025 SAN Purchase XMAD 1,260,000 8.7870 05/11/ 2025 SAN Purchase CEUX 236,977 8.7603 05/11/ 2025 SAN Purchase TQEX 88,377 8.7494 05/11/ 2025 SAN Purchase AQEU 214,646 8.7479 TOTAL 13,100,000 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 November 2025 ANNEX I Detailed information on each of the transactions carried out within the context of the Buy-back Programme between 30/10/2025 and 05/11/2025 (both inclusive) (https://www.santander.com/content/dam/santander-com/es/documentos/cumplimiento/do-anexo-i-30-10-a-05-11-2025.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: November 6, 2025 By: /s/ Pedro de Mingo Kaminouchi Name: Pedro de Mingo Kaminouchi Title: Head of Corporate Compliance

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