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 March, 2026

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:

Form 20-F     x

Form 40-F   ¨

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):

Yes               ¨

No                x

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):

Yes               ¨

No               x

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

OTHER RELEVANT INFORMATION

~~Further to~~Notice ~~the~~is ~~notice~~hereby given of the ~~inside~~partial ~~information~~execution of 19the ~~December 2025,~~share ~~with~~capital ~~registration~~reduction ~~number~~resolution inadopted by the ~~CNMV~~Ordinary ~~3046,~~General ~~and~~Shareholders’ ~~the~~Meeting ~~notice~~ of ~~inside~~BBVA ~~information~~held ofon 20 March 2026, ~~with~~under ~~registration~~agenda ~~number~~item infive, ~~the~~through ~~CNMV 3146 relating to~~ the ~~execution~~reduction of ~~the~~BBVA's ~~second~~share ~~tranche~~capital ofin a ~~buyback~~nominal ~~program of~~amount ~~own shares~~ of ~~BBVA (the “Second Tranche”)~~36, ~~and pursuant to article 5 of Regulation (EU) no~~732,017.98 ~~596/2014~~euros, ~~of the European~~by ~~Parliament~~means ~~and~~ of the ~~Council~~cancellation of ~~16 April 2014 on market abuse~~74,963,302 ~~BBVA~~own ~~informs–on~~shares ~~the basis~~ of ~~the~~0.49 ~~information~~euros ~~received~~par ~~from Citigroup~~value ~~Global~~each ~~Markets~~held ~~Europe~~by ~~AG as~~ the ~~Second~~Company ~~Tranche~~as ~~manager–~~treasury ~~that it has carried out the following transactions over BBVA~~ shares ~~in execution of the First Tranche between 23 March and 27 March 2026 (both inclusive):~~.

The own ~~cash~~shares ~~amount~~subject ofto the ~~shares~~cancellation ~~purchased~~were toacquired ~~date as~~derivatively aby ~~result~~the Company in execution of the ~~execution~~first tranche of the ~~Second~~program ~~Tranche~~scheme for ~~amounts~~the torepurchase ~~274,303,200.00~~of ~~Euros~~own shares, which, ~~approximately,~~were ~~represents~~communicated 27by means of inside information dated 19 December 2025 (registration number 3,046).~~43%~~ The completion of the ~~maximum cash~~first ~~amount~~tranche of the ~~Second~~program ~~Tranche~~scheme for the repurchase of own shares was communicated by BBVA as other relevant information on 6 March 2026 (registration number 39,596).

~~Issuer~~Following the ~~name:~~cancellation ~~Banco~~of ~~Bilbao~~the ~~Vizcaya~~74,963,302 ~~Argentaria~~own shares with a par value of 36, S732,017.A98 euros, BBVA's share capital has been set at 2,760,662,645.02 euros, -represented ~~LEI~~by ~~K8MS7FD7N5Z2WQ51AZ71~~5,634,005,398 shares with a par value of 0.49 euros each.

~~ISIN~~This ~~Code~~capital reduction does not entail the return of contributions, since the ~~ordinary~~Company itself is the owner of the redeemed shares, and is charged to unrestricted reserves, through the allocation of ~~BBVA:~~the ~~ES0113211835~~reserve for redeemed capital for an amount equal to the par value of the redeemed shares, which can only be used under the same conditions as those required for the reduction of the share capital, in application of the provisions of Article 335 c) of the Spanish Companies Act. Consequently, the Company's creditors will not have the right of opposition referred to in Article 334 of the Spanish Companies Act.

~~Madrid~~Likewise, 30notice ~~March 2026~~is hereby given that BBVA will request the delisting of the redeemed shares from the relevant Stock Exchanges and the cancellation of the redeemed shares in the accounting records of "Sociedad de Gestión de los Sistemas de Registro, Compensación y Liquidación de Valores, S.A." (Sociedad Unipersonal) (IBERCLEAR).

Madrid, 31 March 2026

This English version is a translation of the original in Spanish for information purposes only. In case of discrepancy, the Spanish original will prevail.

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 Bilbao Vizcaya Argentaria, S.A.
Date: March 30, 2026
Date: March 31, 2026
	By:	/s/ José María Caballero Cobacho
	Name:	José María Caballero Cobacho
	Title:	Global ALM Director

Filing Compare · BANCO BILBAO VIZCAYA ARGENTARIA, S.A.