Company: BBVXF
Filing Date: 2025-12-09
Form Type: 6-K
Source: 0001104659-25-119471
Chunk: 0

Company: BANCO BILBAO VIZCAYA ARGENTARIA, S.A.
Filing Date: 2025-12-09
Form: 6-K
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 6-K

REPORT OF FOREIGN ISSUER PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of December, 2025

Commission file number: 1-10110

BANCO BILBAO VIZCAYA ARGENTARIA, S.A.

(Exact name of Registrant as specified in its charter)

BANK BILBAO VIZCAYA ARGENTARIA, S.A.

(Translation of Registrant’s name into English)

Calle Azul 4,

28050 Madrid

Spain

(Address of principal executive offices)

Indicate by check mark whether the registrant files
or will file annual reports under cover of Form 20-F or Form 40-F:</div>

| Form   
 20-F x | Form   
 40-F ¨ |

<div align='center'>Indicate by check mark if the registrant is submitting
the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):</div>

| Yes ¨ | No x |

<div align='center'>Indicate by check mark if the registrant is submitting
the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):</div>

| Yes ¨ | No x |

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

<div align='center'>OTHER RELEVANT INFORMATION</div>

Further to the notice of
inside information of 30 October 2025, with registration number 2966, relating to the execution of a buyback program of own shares of
BBVA (the “Buyback Program”), and pursuant to article 5 of Regulation (EU) no. 596/2014 of the European Parliament
and of the Council of 16 April 2014 on market abuse, BBVA informs that it has carried out the following transactions over BBVA shares
in execution of the Buyback Program between 1 December and 8 December 2025 (both inclusive):

The cash amount of the shares purchased
to date as a result of the execution of the Buyback Program amounts to 922,478,542.32 Euros,