X0306 4 2013-02-21 1 0001273441 GRAN TIERRA ENERGY INC. GTE 0001397098 Eden Martin H C/O GRAN TIERRA ENERGY INC. 300, 625 11TH AVENUE S.W. CALGARY A0 T2R 0E1 ALBERTA, CANADA 0 0 0 1 Former VP, Finance, & CFO Reporting Person ceased to be an officer or director of the Issuer as of February 21, 2013. /s/ Sonya Messner, Attorney-In-Fact 2013-03-04