Banco Santander S.A.

Director's Dealing • Dec 23, 2025

ANNEX

Template for notification and public disclosure of transactions by persons discharging managerial responsibilities and persons closely associated with them

1	Details of the person discharging managerial responsibilities / person closely associated
a)	Name	THIS NOTIFICATION RELATES TO AGROPECUARIA EL CASTAÑO, S.L.U.
2	Reason for the notification
a)	Position/status	THIS NOTIFICATION RELATES TO AGROPECUARIA EL CASTAÑO, S.L.U., A PERSON CLOSELY ASSOCIATED WITH FRANCISCO JAVIER BOTÍN - SANZ DE SAUTUOLA O´SHEA, DIRECTOR OF THE ISSUER.
b)	Initial notification /Amendment	INITIAL NOTIFICATION
3	Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor
a)	Name	BANCO SANTANDER, S.A.
b)	LEI	5493006QMFDDMYWIAM13
4	Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted
a)	Description of the financial instrument, type of instrument	ORDINARY SHARES OF 0.50 EURO NOMINAL VALUE
	Identification code	(ISIN: ES0113900J37)
b)	Nature of the transaction	CONTRIBUTION BY THE COMPANY AGROPECUARIA EL CASTAÑO, S.L.U. TO THE COMPANY AGROPECUARIA EL CASTAÑO IBÉRICA, S.L.U. OF 13,135,613 SHARES IN BANCO SANTANDER, S.A. THE REFERENCE PRICE FOR THE CONTRIBUTION IS THE MARKET CLOSING PRICE ON 23 DECEMBER 2025. MR JAVIER BOTIN HOLDS 100% OF THE SHARE CAPITAL OF BOTH COMPANIES.

c)	Price(s) and volume(s)
		Price(s)	Volume(s)
		10.00	13,135,613
d)	Aggregated information	ORDINARY SHARES OF 0.50 EURO NOMINAL (ISIN: ES0113900J37) VALUE
	- Aggregated volume	Price	Volume
	- Price	10.00	13,135,613
e)	Date of the transaction	2025-12-23
f)	Place of the transaction	XOFF