Appointment of Chief Operating Officer

CALGARY, Alberta, Oct. 31, 2023 (GLOBE NEWSWIRE) -- Gran Tierra Energy Inc. ("Gran Tierra" or the "Company") (NYSE American:GTE)(TSX:GTE)(LSE:GTE) is pleased to announce the appointment of Mr. Sebastien Morin as Chief Operating Officer (“COO”). Mr. Morin will be joining Gran Tierra as COO, located in Calgary and will report to Gary Guidry, President and Chief Executive Officer. Mr. Morin was most recently President & COO at WesternZagros Resources Ltd., a privately-owned petroleum operating company with production sharing contracts in the Kurdistan region of Iraq. Prior to WesternZagros Resources, Mr. Morin was previously employed by Gran Tierra, holding progressively more senior positions in Colombia and Calgary with the Company, including Vice President of Operations in Colombia.

Prior to his original tenure with Gran Tierra, Mr. Morin spent 13 years with Imperial Oil (Esso) and ExxonMobil, where he held increasingly more senior technical and managerial positions in upstream and downstream, including drilling and completions, reservoir development, production, customer service and distribution, mostly onshore but also with experience offshore in the Gulf of Mexico. Mr. Morin has a Bachelor of Science degree in Geological Engineering from the University of Waterloo. The following areas will report directly to Mr. Morin: Drilling and Workovers, Operations, Major Capital Projects, Exploration and Asset Management.

Message to Shareholders

Gary Guidry, President and Chief Executive Officer of Gran Tierra, commented: "We are very pleased to welcome Sebastien back to Gran Tierra in the new position of COO. Sebastien has a proven track record of delivering value-added results and has demonstrated excellent mentorship and communication skills. Sebastien was integral in Gran Tierra becoming best in class in its drilling, operations, and execution of capital programs. Sebastien will be focused on continuous improvement and optimization of our capital investments and operating costs and will be leading the functional integration of asset management plans to achieve optimum value for all company assets.”

About Gran Tierra Energy Inc.

Gran Tierra's Securities and Exchange Commission (the “SEC”) filings are available on the SEC website at http://www.sec.gov. The Company’s Canadian securities regulatory filings are available on SEDAR at http://www.sedar.com and UK regulatory filings are available on the National Storage Mechanism website at https://data.fca.org.uk/#/nsm/nationalstoragemechanism.