Gran Tierra Energy Inc. Announces Fourth Quarter and Year-End Results for 2020 and Operational Update Realized 100% 1P and 133% PDP Reserves Replacement, with $2.65 and $5.06/BOE F&D Costs Achieved 2020 Production of 22,624 bopd Forecast 2021 Production of 28,000-30,000 bopd for Annual Growth of 24-33% Reduced Annual Operating and G&A Costs by $92 Million Achieved Company's Best Safety Year in 2020: Zero Lost Time Incident Frequency CALGARY, Alberta, Feb. 24, 2021 (GLOBE NEWSWIRE) -- Gran Tierra Energy Inc. ("Gran Tierra" or the "Company") (NYSE American:GTE) (TSX:GTE) (LSE: GTE) today ann...