X0203 3 2010-08-19 1 0001273441 GRAN TIERRA ENERGY, INC. GTE 0001499726 Macey Gerald Joseph C/O GRAN TIERRA ENERGY INC. 300, 625 11TH AVENUE SW CALGARY A0 T2R 0E1 ALBERTA, CANADA 1 0 0 0 /s/Sonya Messner, Attorney-In-Fact 2010-08-23