November 13, 2015

Lonestar Resources, Ltd. (ASX: LNR, OTCQX: LNREF) is pleased to announce that pursuant to the terms of the Company’s Senior Secured Credit Facility, which is redetermined semiannually, the Company’s Borrowing Base has been reaffirmed at $180 million.  As of September 30th, 2015, the company had $79 millionoutstanding on the facility, leaving $101 million undrawn and available.

Gran Tierra Energy Inc. (“Gran Tierra” or the “Company”) (GTE.TO) (GTE.TO) and Petroamerica Oil Corp. (“Petroamerica”) (TSX VENTURE:PTA), both international oil and gas companies operating in Colombia, are pleased to announce that they have entered into an arrangement agreement dated November 12, 2015 (the “Arrangement Agreement”) whereby Gran Tierra has agreed to acquire all of the issued and outstanding common