Buyback programme: transactions 25June-1July

Summary by AI ^BETAClose X

Banco Santander has provided an update on its share buyback program, reporting that as of July 1, 2026, it has purchased shares totaling €3,631,865,722, which represents approximately 72.2% of the program's maximum investment. These purchases have resulted in the repurchase of roughly 17.3% of the bank's outstanding shares as of 2021. The transactions occurred between June 25 and July 1, 2026, with the weighted average price of shares purchased on the XMAD trading venue ranging from €11.8104 to €12.0302.

Disclaimer*

Banco Santander S.A.

02 July 2026

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 25 June and 1 July (both inclusive).

The cash amount of the shares purchased to 1 July 2026 as a result of the execution of the Buyback Programme amounts to 3,631,865,722 Euros, which represents approximately 72.2% 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 17.3% of its outstanding shares as of 2021.

Date	Security	Transaction	Trading venue	Number of shares	Weighted average price (€)
25/06/2026	SAN	Purchase	XMAD	2,399,608	11.8104
26/06/2026	SAN	Purchase	XMAD	1,000,000	11.8331
29/06/2026	SAN	Purchase	XMAD	1,000,000	11.8812
30/06/2026	SAN	Purchase	XMAD	2,000,000	11.9783
01/07/2026	SAN	Purchase	XMAD	2,000,000	12.0302
			TOTAL	8,399,608

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), 2 July 2026

ANNEX I

Detailed information on each of the transactions carried out within the context of the Buy-back Programme between 25/06/2026 and 01/07/2026 (both inclusive)

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