Gary S. Guidry – President and Chief Executive Officer

Gary is a professional engineer and has more than 35 years of experience developing and maximizing assets in the international oil and gas industry. Mr. Guidry has direct experience managing large, international projects, including assets in Latin America, Africa, the Middle-East and Asia. Most recently Mr. Guidry was the President and CEO of Caracal Energy, a London Stock Exchange listed Company with operations in Chad, Africa. He held that position from mid-2011 until the Company was acquired by Glencore plc for $1.8 billion in mid-2014. In 2014, Mr. Guidry was awarded the Oil Council Executive of the Year award for his leadership role with Caracal. Prior to Caracal, Mr. Guidry was the President and CEO of Orion Oil and Gas (TSX listed), which operated in western Canada from mid-2009 until mid-2011 when it was sold. From May 2005 until December 2008, he was the President and CEO of Tanganyika Oil Company (TSX listed) which operated in Syria and Egypt. Prior to Tanganyika, Mr. Guidry was CEO of Calpine Natural Gas Trust. Mr. Guidry is an Alberta-registered Professional Engineer and a member of APEGA. He received a Bachelor of Science in Petroleum Engineering from Texas A&M University in 1980.

Ryan Ellson – Chief Financial Officer and Executive Vice President, Finance

Ryan has 15 years of experience in a broad range of international corporate finance and accounting roles. Most recently, Mr. Ellson was Head of Finance for Glencore E&P (Canada) and prior thereto Vice President, Finance at Caracal Energy, a London Stock Exchange listed company with operations in Chad, Africa. While at Caracal Energy, Mr. Ellson was instrumental in negotiating a $330 million farm-out to Glencore, secured a $250 million reserve based lending facility (winner of several trade finance deals of the year), and involved in multiple capital raises totaling approximately $500 million. Ryan was also instrumental in the successful listing of the Company on the London Stock Exchange. Prior to Caracal, Mr. Ellson held several management and executive positions with companies operating in Egypt, India and Canada. Mr. Ellson is a Chartered Accountant and holds a Bachelor of Commerce and a Master of Professional Accounting from the University of Saskatchewan.

Tony Berthelet – Chief Operating Officer

Tony has over 20 years of multi-disciplinary upstream oil and gas experience and eight years of executive level leadership experience. Tony was previously the President and Chief Executive Officer of Strategic Oil and Gas Ltd., where he focused on implementing operational and organizational efficiencies while growing production and value from light oil fields in Western Canada. Tony gained international leadership experience through project management roles focused on enhanced oil recovery evaluation projects with Vermilion Energy Inc. in France and Nexen Inc. in Yemen. He also managed intelligent completion projects in Ecuador and Russia with Schlumberger. Tony has a Bachelor of Science in Geological Engineering from the University of Saskatchewan, a Project Management Professional designation from the Project Management Institute and is registered with APEGA as a Professional Engineer in Alberta.

Jim Evans – Vice President, Corporate Services

Jim has over 20 years of experience including working the last 10 years in the international oil and gas industry. Most recently Jim was the Head of Compliance & Corporate Services for Glencore E&P (Canada) and prior thereto Vice President of Compliance & Corporate Services at Caracal Energy where he oversaw the execution of corporate strategy and goals, developed and implemented a robust corporate compliance program, and managed all aspects of IT, document control, security and administration. Mr. Evans also managed the recruitment, training and retention of staff in both Calgary and Chad. He oversaw the growth of the Company from seven employees to in excess of 400 as Caracal Energy exceeded 20,000 barrels of oil per day at the time of sale to Glencore. Prior to Caracal, Mr. Evans held senior management and executive positions at Orion Oil and Gas and Tanganyika Oil, with operating experience in Egypt, Syria and Canada. Mr. Evans holds a Bachelor of Commerce degree from the University of Calgary.

Glen Mah – Vice President, Exploration Ecuador

Glen 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 various petroleum basins in the Americas, Africa, Middle East and Asia. Mr. Mah was the Chief Geologist with the highly successful Tanganyika Oil Company Ltd. Mr. Mah has Alberta-registered Professional designation with APEGA and holds a Bachelor of Science degree Specialization in Geology from the University of Alberta.

Diego Perez-Claramunt – Vice President, Health Safety and Environment (HSE) & Corporate Social Responsibility (CSR)

Diego Perez-Claramunt has over 21 years of experience in the international oil and gas industry and has held numerous senior executive positions within the area of Health, Safety, Environment and Social Performance. In previous roles at Shell, he worked in the Middle East, North Africa and Africa, overseeing Social and Environmental activities and implementing numerous community development programs in these regions. Most recently, he has successfully led Gran Tierra’s HSE, CSR and Licensing teams as the Director, undertaking respectful community engagement and establishing lasting stakeholder relationships. Mr. Perez-Claramunt holds a Bachelor’s degree in Business Management, Marketing and Related Support Services from the Instituto de Ciencias del Mercado, and he completed MIT’s Executive Program for General Management.

Rodger Trimble – Vice President, Investor Relations

Rodger Trimble is a Professional 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. Mr. Trimble is an Alberta-registered Professional Engineer and a member of APEGA. He received a Bachelor of Science in Petroleum Engineering (with Distinction) from Stanford University.

Lawrence West – Vice President, Exploration

Lawrence has 35 years of experience as an executive, explorationist, and geologist. Most recently, Mr. West was Vice President, Exploration at Caracal Energy. Lawrence built a multi-disciplinary team to assess resources and grow reserves in the interior rift basins within Chad and led a successful exploration program. During his tenure he successfully executed two large 2D/3D seismic shoots in remote frontier basins, on time and on budget. Prior to Caracal he has been involved in starting and growing several public and private companies, including Reserve Royalty Corp., Chariot Energy, Auriga Energy and Orion Oil and Gas. Lawrence worked at Alberta Energy Company (AEC), where he was on the team that merged with Conwest. He built and led the AEC East team to the Rocky Mountain USA basins. His career began with Imperial Oil working on prospect and reservoir characterization, in multi-disciplinary teams, and as a technical mentor to exploration teams. Lawrence has an Honours Bachelor of Science in Geology from McMaster University and an MBA, specializing in economics, from the University of Calgary.

Rob Will – Vice President, Asset Management

Rob has over 30 years of experience in the oil and gas industry, most recently as the Chief Operating Officer at Trident Exploration Corp and Cona Resources LTD. Rob has extensive technical experience in reservoir management, production and operations throughout his career and has had exposure to a broad spectrum of hydrocarbon and geologic-play types. Recently at Cona Resources LTD (formerly Northern Blizzard Resources Inc.) he led the identification, design, and construction stages of Northern Blizzard’s thermal SAGD project and played a key role in Northern Blizzard’s successful initial public offering (IPO) during his tenure as V.P. of Business Development. Throughout his career Rob has demonstrated strong leadership, mentorship and resulting value creation. Rob has a Bachelor of Geological Engineering, graduating with Great Distinction, and a Master of Chemical Engineering (petroleum).

Country Management

Manuel Buitrago – President and Country Manager, Colombia

Manuel has over 17 years of experience in a broad range of international corporate finance and business development roles working for publicly listed companies. Most recently, Mr. Buitrago was the President and Country Manager for Gran Tierra Energy Mexico and prior to that was the Senior Finance Manager for Gran Tierra Energy in Colombia. He was responsible for all finance functions and supported new business opportunities and post M&A integration. Previously he was the CFO of PetroTiger from 2010 to 2014, during which he oversaw group integration, structured debt facility and implemented financial reporting and internal controls. Manuel has held positions of increasing responsibility with British Petroleum in the UK and Europe, Occidental Petroleum and MPX and OGX entities in Colombia and Brazil. Mr. Buitrago has a Bachelor Business Administration degree, with a major in International Business from Schiller International University and holds a Master of International Accounting from Javeriana University in Colombia.

Enrique Villalobos – President and Country Manager, Ecuador

Enrique Villalobos has over 23 years of international experience in Oil and Gas E&P in North Africa, Europe and Latin America. Prior to joining Gran Tierra Energy in 2014, Mr. Villalobos worked at Repsol and ExxonMobil in several positions. His experience in these positions ranged from light oil and gas large field development planning in Libya, to business development in Europe, Asia and Africa. In these former roles he also lead the operations for the exploration of unconventionals in Morocco and Colombia, managed large technical teams responsible for cost effective full field development and operations of light to heavy remote oilfields onshore Colombia and Venezuela. Enrique has also been a post-graduate university professor at the Universidad de Los Andes in Bogota, Colombia teaching production engineering. Enrique has an Oil and Gas MBA from the Robert Gordon University in Aberdeen Scotland, UK, where he graduated with Merit as well as a degree in Petroleum Engineering from Universidad de America in Bogota, Colombia.