PRESS RELEASE
5 February 2026

Mayer Brown Advises Vista Energy On Acquisition Of Equinor’s Assets In Vaca Muerta

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Mayer Brown

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Mayer Brown is an international law firm positioned to represent the world’s major corporations, funds, and financial institutions in their most important and complex transactions and disputes.
Mayer Brown served as international transactional advisor to Vista Energy in connection with a series of agreements to acquire a 25.1% non-operating indirect working interest in the Bandurria Sur block and a 35% non-operating working interest in the Bajo
United States

Mayer Brown served as international transactional advisor to Vista Energy in connection with a series of agreements to acquire a 25.1% non-operating indirect working interest in the Bandurria Sur block and a 35% non-operating working interest in the Bajo del Toro block. The arrangement involves the acquisition of Equinor's entire 30% working interest in the Bandurria Sur block through the acquisition of 100% of the capital stock of Equinor Argentina S.A.U., and the acquisition of a 50% working interest in the Bajo del Toro block, with a simultaneous back-to-back transaction to assign to YPF S.A an indirect 4.9% working interest in Bandurria Sur block and a 15% working interest in the Bajo del Toro block. The transaction, which represents the divestment of Equinor's full onshore position in Argentina's Vaca Muerta basin, is subject to the satisfaction of certain conditions precedent.

The Houston-based Mayer Brown team was led by Global Energy partner Pablo Ferrante and included counsel Federica Castro and associate Lucia Londono.

View Vista Energy's release here and Equinor's release here.

Contributor

Mayer Brown is an international law firm positioned to represent the world’s major corporations, funds, and financial institutions in their most important and complex transactions and disputes.

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