Company: VIST
Filing Date: 2025-03-03
Form Type: 6-K
Source: 0001193125-25-044101
Chunk: 6

Company: Vista Energy, S.A.B. de C.V.
Filing Date: 2025-03-03
Form: 6-K
Chunk 6
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 9,029,785 shares, and (iii) abstention of 77,428
shares.

4

FOURTH ITEM OF THE AGENDA

Appointment of delegates to comply with and, as appropriate, formalize the resolutions adopted at the Ordinary General Meeting; associated resolutions.

Below is an excerpt of the resolution adopted at the Ordinary General Meeting in connection with the fourth item of the Agenda:

“In this act, Messrs. Elizabeth Gómez Saldaña, Javier Sebastián Rodríguez Galli, Carlos Zamarrón Ontiveros, Crisanto Jesús Sánchez Carrillo, Alejandro González Cruz, Luis Ernesto Garrido Solís, Sofía Sandoval Márquez, Valentina Márquez Miranda, José Fernando del Toro Ocampo, Melissa Pedraza Miranda and Edgar Castañeda Sepúlveda are appointed to jointly or separately, by themselves or through the person they designate, if necessary, appear before the notary public of their choice to request and grant the total or partial notarization of this act, as well as to issue the simple or certified copies, either in their entirety or in what is appropriate, that of this act are requested, write and sign the notices, publications, requests and writings that must be given in accordance with the applicable legal provisions and carry out the necessary steps related to the matters approved in this Ordinary General Meeting.”

With respect to the fourth item of the Agenda, the shareholders’ representatives announced the proxy vote with respect to the 57,958,956 shares
present and represented at the Ordinary General Meeting, and the vote tally resulted as follows: (i) affirmative vote of 48,908,577 shares, (ii) dissenting vote of 8,976,829 shares, and (iii) abstention of 73,550 shares.

* * *

5

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: March 3, 2025

| VISTA ENERGY, S.A.B. DE C.V. |     |                                                   |
| By:                          |     | /s/ Alejandro Cherñacov                           |
| Name:                        |     | Alejandro Cherñacov                               |
| Title:                       |     | Strategic Planning and Investor Relations Officer |