Company: VIST
Filing Date: 2025-03-20
Form Type: 6-K
Source: 0001193125-25-058970
Chunk: 1

Company: Vista Energy, S.A.B. de C.V.
Filing Date: 2025-03-20
Form: 6-K
Chunk 1
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 the Company’s website, at .

Forward-Looking Statements

Any statements contained herein or in the attachments hereto regarding Vista that are not historical or current facts are forward-looking statements. These
forward-looking statements convey Vista’s current expectations or forecasts of future events. Forward-looking statements regarding Vista involve known and unknown risks, uncertainties and other factors that may cause Vista’s actual
results, performance or achievements to be materially different from any future results, performances or achievements expressed 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 United States Securities and Exchange Commission (“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: , the Mexican National Banking and Securities
Commission (Comisión Nacional Bancaria y de Valores) website: and our website: .

Enquiries:

Investor Relations:

Argentina: +54 11 3754 8500

Mexico: +52 55 1555 7104

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 20, 2025

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