End of Exclusivity Agreement for the Sale of Pampa´s Stake in TGS

End of Exclusivity Agreement for the Sale of the Stake of the Company in Transportadora de Gas del Sur S.A.

Buenos Aires, June 28, 2016. Pampa Energía S.A. (‘Pampa’ or the ‘Company’; NYSE: PAM; Buenos Aires Stock Exchange: PAMP), in relation to the relevant events timely released by the Company on March 9, 2016 and April 22, 2016, informs that the Exclusivity Period agreed with Harz Energy, a subsidiary of Grupo Neuss (“Grupo Neuss”), has ended without completing the sale of the stake and rights that the Company, directly or indirectly, holds in Transportadora de Gas del Sur S.A. (“TGS”).

However, the Company and Grupo Neuss are continuing non-exclusive negotiations for the sale of TGS, which in the event such sale is not fulfilled Grupo Neuss shall lose the US$3 million paid consideration.

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