Directors

Dr. David Winter

Dr. David Winter

Executive Chairman and Chief Executive Officer

Dr. David Winter was confirmed by the Board as the Chief Executive Officer of Horizon. He is a co-founder and a Director of Canacol Energy Ltd. Previously, Dr. Winter was the Founder, Chief Executive Officer and Director of Excelsior Energy Limited, an oil sands focused exploration company. Dr. Winter brings 37 years of international experience in a variety of technical, management and leadership roles living and working in Latin America, Middle East, Southeast Asia and the UK North Sea. His experience was gained working at British Petroleum, Sun Oil, Canadian Occidental (now CNOOC), Alberta Energy Company (now Ovintiv) where he was a member of the leadership team that grew its international business to over 60,000 barrels of oil equivalent per day, Calvalley Petroleum and Excelsior Energy Limited. Dr. Winter holds a BSc (Hons) in Geology from the University a London, a MSc degree in Structural Geology from Imperial College, University of London and a PhD degree in Structural Geology from Edinburgh University.

Dr. Charlie A Gamba

Dr. Charlie A Gamba

Non-Executive Director

Dr. Charle Gamba is currently a Co-Founder, Director, President and Chief Executive Officer of Canacol Energy Ltd. Dr. Gamba has over 30 years of international oil and gas experience, and has previously worked for Imperial Oil, Canadian Occidental Oil and Gas, Occidental Petroleum, and Alberta Energy Company in Southeast Asia, the Middle East, West Africa, Canada, and Latin America. He has served on the board of directors of several publicly listed and private oil and gas companies where he held positions on the ESG, audit, reserves, HSE and compensation committees. Dr. Gamba currently sits on the board of the Asociacion Colombiana de Petroleo and Naturgas, two industry groups that form upstream, midstream and downstream policy for the oil and gas industry in Colombia. Dr. Gamba holds a B.Sc., M.Sc. and PhD in Geology.

Roger McMechan

President and Chief Operating officer and director

Roger McMechan has over 35 years of diverse experience in managing domestic and international oil and gas operations. He has held senior management positions for Petro Canada and Burlington Resources in North Africa and Canada; was the Executive Vice President and Director of Winstar Resources with operations in Canada, Tunisia, Hungary and Romania; the Chief Executive Officer and Director of Iskandar Energy, a private company that operated in Bulgaria, Georgia, Poland and Ukraine; and more recently was the Technical Director of Block Energy Plc with operations in the country of Georgia. Mr. McMechan received a BSc in Mechanical Engineering from University of Waterloo.

Tan Shern Liang

Non-Executive Director

Tan Shern Liang has more than 30 years of experience in both the banking and investment industries. Mr. Tan is the founder and Chief Executive Officer of One Tree Partners, a licensed asset management firm in Singapore. One Tree Partners is one of the longest established fund management firms in Singapore. Over the years, One Tree Partners has invested in more than US$1bn worth of mining and commercial real estate deals across the region. Prior to founding One Tree Partners, Mr. Tan held increasingly senior management and executive roles at Citibank, UBS and Goldman Sachs in Singapore. Mr. Tan graduated with a Bachelor of Business Administration (BBA) degree from the University of Michigan.