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Gran Tierra announces new executive appointments

Gran Tierra EnergyGran Tierra Energy, an oil and gas company, announced the promotion of four key team members to executive officers.
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Ed Caldwell - Vice President Health, Safety and Environment & Corporate Social Responsibility

Mr. Caldwell had a distinguished 27-year career with ExxonMobil and Imperial Oil, and most recently worked with Caracal Energy Inc. in Caracal's efforts and achievement in Chad. Mr. Caldwell has extensive experience in senior Regulatory Approvals and HSE Management roles in Canada, Asia, Russia, and Africa.

He has also worked with the Government of Canada and, in that capacity, represented Canada at the OECD Energy/Environment Committee as well as at the Intergovernmental Panel on Climate Change.

Susan Mawdsley - Vice President Finance and Corporate Controller

Ms. Mawdsley is a Chartered Accountant with 25 years of experience in the oil and gas industry. She has been the Corporate Controller of Gran Tierra Energy since 2012 and has direct responsibility for the finance departments in all business units, as well as treasury and internal audit.

Prior to joining Gran Tierra in 2011, she was an independent consultant providing contract controller, CFO, and other finance related services to publicly traded domestic and international oil and gas companies.

Glen Mah - Vice President Business Development

Mr. Mah is a Petroleum Geologist with extensive management experience covering the execution of exploration programs, field development and asset management for conventional and unconventional hydrocarbons. He has worked with onshore and offshore projects in international basins in the Americas, Africa, Middle East and Asian.

Mr. Mah was the Chief Geologist with the highly successful Tanganyika Oil Company Ltd. project in Syria. Mr. Mah will lead and coordinate all of the Company's new business development efforts.

Rodger Trimble - Vice President Investor Relations

Mr. Trimble is a professional oil and gas Engineer with 30+ years of experience in domestic and international basins in various management positions.

Prior to joining Gran Tierra, Mr. Trimble was Head of Corporate Planning, Budgeting & Finance with Glencore E&P Canada Inc. and prior thereto Director Corporate Planning, Budget & Business Development with Caracal Energy Inc. (acquired by Glencore E&P).

He has held several senior management positions ranging from Country Manager in Argentina with Canadian Hunter Exploration, Vice President, Exploitation with Esprit Energy Trust, Manager, Reservoir Engineering with Apache Canada Inc. and Manager, Upstream Evaluations - Frontiers & International with Husky Energy.



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