Company: BBVXF
Filing Date: 2025-10-07
Form Type: 6-K
Source: 0001193125-25-232944
Chunk: 1

Company: BANCO BILBAO VIZCAYA ARGENTARIA, S.A.
Filing Date: 2025-10-07
Form: 6-K
Chunk 1
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| ● |     | Upgraded by one notch short-term deposits rating to F1 from F2 and outlook changed to stable from Rating Watch Positive. |

| ● |     | Upgraded by one notch short-term senior preferred debt rating to F1 from F2 and outlook changed to stable from Rating 
 Watch Positive.                                                                                                       |

| ● |     | Upgraded by one notch long-term senior non-preferred debt rating to A- from BBB+ and outlook changed to stable from Rating Watch Positive. |

| ● |     | Upgraded by one notch long-term subordinated lower Tier 2 debt rating to BBB from 
 BBB- and outlook changed to stable from Rating Watch Positive.                    |

| ● |     | Upgraded by one notch long-term subordinated upper Tier 2 debt rating to BBB- 
 from BB+ and outlook changed to stable from Rating Watch Positive.            |

| ● |     | Upgraded by one notch long-term AT1 debt rating to BB+ from BB and outlook changed to stable from Rating Watch Positive. |

Madrid, October 7th 2025

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.

| Date: October 7, 2025 |     | Banco Bilbao Vizcaya Argentaria, S.A. |
|:----------------------|:----|:--------------------------------------|
|                       |     | By: /s/ Patricia Bueno Olalla         |
|                       |     | Name: Patricia Bueno Olalla           |
|                       |     | Title: Head of Investor Relations     |