Closing of the Sale to Vista

Buenos Aires, April 4, 2018. Pampa Energía S.A. (‘Pampa‘ or the ‘Company‘; NYSE: PAM; BCBA: PAMP) informs that, in relation to the release dated on January 16, 2018 and given the compliance of all conditions precedent that the transaction was subject to, on the date of today took place the closing of the sale to Vista Oil & Gas S.A.B. de C.V. and/or its subsidiaries (‘Vista‘) of Pampa‘s direct ownership of 58.88% at Petrolera Entre Lomas S.A. (‘PELSA‘), 3.85% at Entre Lomas, Bajada del Palo and Agua Amarga blocks, and 100% at Medanito S.E. and Jagüel de los Machos blocks (the ‘Transaction‘).

The Transaction price, after applying the agreed adjustments, reached an amount of US$399 million approximately, which was entirely settled by Vista today

For further information, contact:

Gustavo Mariani – Vice-president

Ricardo Torres – Vice-president

Mariano Batistella – Planning, Strategy and Affiliates Executive Director

Lida Wang – Investor Relations Officer

Maipú 1, (C1084ABA), Buenos Aires, Argentina
Phone: +54 (11) 4344 6000