X0306 4 2015-11-18 0 0001273441 GRAN TIERRA ENERGY INC. GTE 0001642277 West Lawrence C/O GRAN TIERRA ENERGY INC. 200, 150 13 AVENUE SW CALGARY A0 T2R 0V2 ALBERTA, CANADA 0 1 0 0 VP, Exploration Common Stock 2015-11-18 4 P 0 13000 2.273 A 220030 D The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.03 (CDN) to $3.04 (CDN), inclusive. The undersigned hereby undertakes to provide the Issuer, any security holder of the Issuer or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein. Purchase price of security was transacted in Canadian currency and converted to U.S. currency. /s/David Hardy, Attorney-In-Fact 2015-11-20