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Gran Tierra Energy Inc.

11:48 AM EST - Gran Tierra Energy Inc. : announced the results of an independent reserve evaluation of the company's reserves by GLJ Petroleum Consultants Ltd. effective December 31, 2010. Total Proved oil reserves increased 7% to approximately 23.6 million barrels of oil; Total Proved plus probable ("2P") oil reserves increased 11% to approximately 31.0 million barrels of oil; Total Proved plus probable plus possible ("3P") oil and liquids reserves increased 20% to approximately 47.3 million barrels of oil and liquids. Gran Tierra Energy Inc. shares T.GTE are trading down $0.21 at $8.96.