Mayer Brown advises PETRONAS on the sale of PETRONAS E&P Argentina to Vista Energy

Mayer Brown has advised PETRONAS Carigali Canada B.V. and PETRONAS Carigali International E&P B.V. (jointly, PETRONAS) on the sale of 100 percent of the capital stock of PETRONAS E&P Argentina S.A. (PEPASA) to Vista Energy, S.A.B. de C.V. (Vista) and Vista Argentina S.A.U. PEPASA which holds a 50 percent working interest in the La Amarga Chica unconventional oil and gas concession in the Vaca Muerta formation located in Neuquén, Argentina. The transaction, that closed on April 15, 2025, has a total value of approximately $1.5 billion, which is comprised of $900 million in cash, $300 million in deferred cash payments, and 7.2 million in American Depositary Shares representing Vista's series A shares. 

The team was led by Global Energy partner Pablo Ferrante (Houston) together with Global Energy partner Bob Palmer (London) and Global Energy senior associate Federica Castro (Houston), and included: Global Head of Energy partner Alexandre Chequer (Houston/Rio de Janeiro); Corporate & Securities partners Dave Bakst (New York) and Jeff Dobbs, counsel Andrew Heather and associates Jessie Ames, Lucia Londono (all Houston), Liam Boylan, Joey Lee, and Georgia Stylianou (all London); Tax partner Kitty Swanson and associate Tamar Ruiz; and Global Antitrust & Competition partners Mark Hills and Daniel Vowden and associate Liam Boylan (all London).

###