BUENOS AIRES, Argentina, April 30, 2018 /PRNewswire/ -- Petrobras Argentina S.A. PZEPESA)) ('Petrobras Argentina' or the 'Company'), announces it has filed its annual report on Form 20-F for the fiscal year ended December 31, 2017 (the '2017 Annual Report') before the U.S. Securities and Exchange Commission (the 'SEC') on April 30, 2018. The 2017 Annual Report can be accessed by visiting either the SEC's website at www.sec.gov or the Company's IR website at http://www.pampaenergia.com/ir. In addition, shareholders may receive a hard copy of the Company's 2017 Annual Report free of charge by requesting a copy within a reasonable period of time from Pampa's Investor Relations office, at investor@pampaenergia.com.

For further information, contact:

Marcos Marcelo Mindlin – Chairman and Chief Executive Officer

Mariano Batistella – Planning, Strategy and Affiliates Executive Director

Lida Wang – Investor Relations Officer

The Pampa Energía Building

1 Maipú

(C1084ABA)

Buenos Aires, Argentina

Phone: +54 (11) 4344 6000

http://www.pampaenergia.com/ir

investor@pampaenergia.com

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SOURCE Petrobras Argentina S.A.