Gran Tierra Energy, Inc. (AMEX:GTE) agreed to acquire remaining 80% working interest in Blocks 123 and 129, Marañon Basin from Sucursal Peruana and others in Peru during quarter ending September 30, 2012. The transaction is subject to final government approval. As on August 20, 2013, the acquisition of 80% stake in Block 123 was approved by the Peru's energy and mines ministry. As on January 17, 2014, the acquisition of 80% stake in Block 129 was approved by the Peru's energy and mines ministry.

Gran Tierra Energy, Inc. (AMEX:GTE) completed the acquisition of remaining 80% working interest in Blocks 123 and 129, Marañon Basin from Sucursal Peruana and others in Peru on January 17, 2014.