Sale of TGS

Sale of Pampa Energía’s Stake in Transportadora de Gas del Sur S.A. (‘TGS’)

Buenos Aires, July 19, 2016. Pampa Energía S.A. (‘Pampa’ or the ‘Company’; NYSE: PAM; Buenos Aires Stock Exchange: PAMP), informs that yesterday the Company entered into an agreement with Grupo Inversor Petroquímica S.L. (part of Grupo GIP, led by the Sielecki family), WST S.A. and PCT L.L.C. (part of Grupo Werthein) (jointly the ‘Buyers’) for the sale of the capital stock and rights indirectly owned by Pampa of 25.5% in TGS, held through 100% of the shares of PEPCA S.A., a company that owns 10% of CIESA S.A. and the rights as sole beneficiary of the CIESA trust, which owns 40% of CIESA S.A. (the ‘Transaction’).

The base price was established, subject to certain adjustments, in the amount of US$241 million.

Following the signature of the Transaction documents, on the date of today the Buyers paid to the Company US$8 million as part of the purchase price. An additional payment of US$153 million shall be paid at the closing of the transaction for the acquisition of Petrobras Argentina S.A. by Pampa and the remaining US$80 million shall be paid on or before February 15, 2017 at a 5% annual interest rate.

For further information, contact:

Gustavo Mariani – Co-Chief Executive Officer
Ricardo Torres – Co-Chief Executive Officer
Mariano Batistella – Special Projects Manager and Investor Relations Officer
Lida Wang – Chief of Investor Relations

3302 Ortiz de Ocampo, Building #4
(C1425DSR) Ciudad Autónoma de Buenos Aires, Argentina
Phone: +54 (11) 4809 9500
http://www.pampaenergia.com/ir
investor@pampaenergia.com