On October 10, 2024, Vista Energy Argentina S.A.U. (“Vista”) successfully issued Class XXVI Notes, simple, non-convertible into shares, denominated and payable in cash in U.S. Dollars abroad, and paid for in (i) cash in U.S. Dollars abroad, and/or (ii) in kind through the delivery of Class XIV Notes (the “Eligible Notes”). The Class XXVI Notes were issued for a nominal value of US$ 150,000,000 under the Global Program for the issuance of simple (non-convertible into shares) notes, at short, medium, or long term, for a maximum amount of up to US$ 1,500,000,000 (or its equivalent in other currencies or units of value).

The Class XXVI Notes, will mature on October 10, 2031, will accrue interest at an annual nominal fixed interest rate of 7.65%. Interest will be paid semi-annually until the maturity date of the Class XXVI Notes.

The principal of the Class XXVI Notes will be amortized in three (3) annual consecutive installments, starting sixty (60) months from the issuance and settlement date: (i) the first, equivalent to 33% of the nominal value; (ii) the second, equivalent to 33% of the nominal value; and (iii) the third, equivalent to 34% of the nominal value.

The Class XXVI Notes have been approved for listing on Bolsas y Mercados Argentinos S.A. and authorized for trading on Mercado Abierto Electrónico S.A. Additionally, they were rated “AAA (arg)” with a “stable outlook” by FIX on October 1, 2024, and “AAA.ar” with a “stable outlook” by Moody’s on September 30, 2024.

The placement agents for this issuance were Allaria S.A., Balanz Capital Valores S.A.U., Banco CMF S.A., Banco Comafi S.A., Banco de Galicia y Buenos Aires S.A.U., Banco de la Provincia de Buenos Aires, Banco Hipotecario S.A., Banco Mariva S.A., Buenos Aires Valores S.A., Global Valores S.A., Invertir en Bolsa S.A., Latin Securities S.A., Macro Securities S.A.U., Max Capital S.A., Neix S.A., PP Inversiones S.A., Puente Hnos. S.A., and TPCG Valores S.A.U.

Legal Advisors to Vista

Bruchou &Funes de Rioja: Team led by José María Bazán, with the participation of Ramón Augusto Poliche, Sofía Maselli and Branko Serventich.

In house counsel: Florencia Hardoy and Rosario Maffrand.

Legal Advisors to the Placement Agents}

Beccar Varela: Team led by Luciana Denegri, with the participation of Maria Victoria Pavani, María Carolina Pilchik, Martina Puntillo, and Carlos Nicolás Saúl Lucero.