Company: VIST
Filing Date: 2025-02-27
Form Type: 6-K
Source: 0001193125-25-037695
Chunk: 1

Company: Vista Energy, S.A.B. de C.V.
Filing Date: 2025-02-27
Form: 6-K
Chunk 1
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 or implied by the forward-looking statements. Certain of these risks and uncertainties are described in the “Risk Factors,” “Forward-Looking Statements” and other applicable sections of Vista’s annual report filed
with the SEC on Form 20-F and other applicable filings with the SEC and Vista’s latest annual report available on the Mexican Stock Exchange’s (Bolsa Mexicana de Valores, S.A.B. de C.V.)
website: www.bmv.com.mx, the Mexican National Banking and Securities Commission (Comisión Nacional Bancaria y de Valores) website: www.gob.mx/cnbv and our website: www.vistaenergy.com.

Enquiries:

Investor Relations:

ir@vistaenergy.com

Argentina: +54 11 3754 8500

Mexico: +52 55 8647 0128

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: February 27, 2025

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