 CALGARY, Alberta, July 27, 2021 GLOBE NEWSWIRE -- Gran Tierra Energy Inc. Gran Tierra NYSE American:GTE TSX:GTE LSE:GTE, announces that the Company will release its 2021 second quarter financial and operating results on Tuesday, August 3, 2021, after market close. A conference call to discuss the 2021 second quarter results will be held at 11:00 a.m. Eastern Time 9:00 a.m. Mountain Time the following day, Wednesday August 4, 2021. Details of the conference call are as follows: 