 CALGARY, Alberta, May 17, 2021 GLOBE NEWSWIRE -- Gran Tierra Energy Inc. Gran Tierra or the Company NYSE American:GTE TSX:GTE LSE:GTE today announced an update on the impact of the ongoing national protests in Colombia on the Companys operations. All production volumes are unaudited and on a working interest before royalties WI basis and are expressed in barrels of oil per day bopd, unless otherwise stated. 