Company: VIST
Filing Date: 2025-04-16
Form Type: 6-K
Source: 0001193125-25-082223
Chunk: 9

Company: Vista Energy, S.A.B. de C.V.
Filing Date: 2025-04-16
Form: 6-K
Chunk 9
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 provisions of the Sale and Purchase Agreement.

“bbl”means barrels of oil.

“BCRA”means the Argentine Central Bank (Banco Central de la República Argentina).

“boe” means barrel of oil equivalent. One cubic meter of oil is equivalent to 6.2898 barrels of oil, and 1,000 cubic meters of gas are
equivalent to 6.2898 barrels of oil equivalent.

“Bolsa” or “BMV” means the Mexican Stock Exchange, S.A.B. de C.V.
(Bolsa Mexicana de Valores, S.A.B. de C.V.).

6

“Circular Única de Emisoras” means the “Disposiciones de carácter
general aplicables a las emisoras de valores y a otros participantes del mercado de valores” issued by the CNBV, published in the Mexican Federal Official Gazette (Diario Oficial de la Federación) on March 19, 2003, as
amended and modified.

“Closing Cash Amount” has the meaning assigned to such term in the “INFORMATION REGARDING THE TRANSACTION – Detailed Description of the Transaction” section of this disclosure document.

“CNBV” means the
Mexican National Banking and Securities Commission (Comisión Nacional Bancaria y de Valores) of the United Mexican States (Estados Unidos Mexicanos).

“Company,” or “Vista” means Vista Energy, S.A.B. de C.V. and its consolidated subsidiaries, unless expressly stated or the
context indicates that such terms include only Vista Energy, S.A.B. de C.V. but exclude its consolidated subsidiaries.

“Completion Date”
means April 15, 2025, date of the completion of the sale and purchase of the PEPASA Shares in accordance with the Sale and Purchase Agreement, described in the “INFORMATION REGARDING THE TRANSACTION – Detailed Description of the Transaction” section of this disclosure document.

“Conventional Assets Transaction” has the meaning assigned to such term in
the “INFORMATION REGARDING THE PARTIES INVOLVED IN THE TRANSACTION – Vista” section of this disclosure document.

“Convertible Note Agreement” has the meaning assigned to such term in the “RELEVANT AGREEMENTS – SALE AND PURCHASE AGREEMENT” section of this disclosure document.

“Deferred Payments” has the meaning assigned to such term in the
“INFORMATION REGARDING THE TRANSACTION – Detailed Description of the Transaction” section of this disclosure document.

“Dollars” means U