Company: BBVXF
Filing Date: 2025-09-22
Form Type: 425
Source: 0001193125-25-210709
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Company: BANCO BILBAO VIZCAYA ARGENTARIA, S.A.
Filing Date: 2025-09-22
Form: 425
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Filed by Banco Bilbao Vizcaya Argentaria, S.A.

Pursuant to Rule 425 under the Securities Act of 1933

Subject Company: Banco de Sabadell, S.A.

Commission File
No.: 333-281111

Banco Bilbao Vizcaya Argentaria, S.A. (“BBVA”), in compliance with the Securities Market
legislation, hereby communicates the following:

### OTHER RELEVANT INFORMATION
In relation to the voluntary tender offer launched by BBVA for the entire share capital of Banco de Sabadell, S.A. (“Banco Sabadell”)
and authorized by the Spanish Securities Market Commission (CNMV) on September 5, 2025 (the “Offer”), whose acceptance period commenced on September 8, 2025, and following to the disclosure of inside information
published on 22 September 2025 (CNMV registration number 2892), BBVA hereby informs that it has submitted to the CNMV the authorization request for the amendment of the Offer, together with the Offer prospectus supplement, an independent expert
report attesting the improvement of the consideration and other required documentation, as provided in Article 31, sections 1, 3 and 4 of Royal Decree 1066/2007.

A copy of the request submitted to the CNMV for authorization of the amendment to the Offer is attached.

Madrid, September 22, 2025

Unofficial English translation for information purposes only REQUEST FOR AUTHORISATION OF THE AMENDMENT OF THE VOLUNTARY TAKEOVER BID FOR THE ACQUISITION OF SHARES OF BANCO DE SABADELL, S.A. MADE BY BANCO BILBAO VIZCAYA ARGENTARIA, S.A. This request for authorization to amend the characteristics of the voluntary takeover bid made by Banco Bilbao Vizcaya Argentaria, S.A. (“ BBVA”) addressed to all the shares of Banco de Sabadell, S.A. (“ Banco Sabadell ”) and authorized by the Spanish National Securities Market Commission (CNMV) on 5 September 2025 (the “ Offer ”), whose acceptance period began on 8 September 2025, is made in accordance with the provisions of Article 31 of Real Decreto 1066/2007, de 27 de julio, sobre el régimen de las ofertas públicas de adquisición de valores (the “ Royal