Sean Guest, B.Sc., Ph.D.

President & CEO

Dr. Guest (Ph.D., Geology) has been working internationally in the oil and gas industry for more than 25 years. Prior to joining Valeura, he was the CEO of two private junior companies. Bukit Energy is a Calgary-based startup focused on Indonesia, and Pexco Energy holds production and exploration assets in Australia-Asia region and East Africa. During his tenure, Pexco was producing ~10,000 boepd from its assets in Indonesia and Australia. While running Pexco, he resided in Jakarta, Indonesia and oversaw the company's first operated development of an oil field in Sumatra. The company also expanded their gas production in Australia with the development of a new offshore gas field and upgrades and debottlenecking of the associated onshore gas plant. Prior to his CEO roles, he also worked for Woodside in Australia and Libya, and for Shell in the Netherlands, Australia and Malaysia. He started his career with Schlumberger working in Egypt.

Education: B.Sc. Geological Engineering, Queen's University, 1985; Ph.D. Geological Sciences, 1993.

Steve Bjornson, B. Comm., CA


Steve Bjornson is a chartered accountant with more than 30 years of finance, business development, strategic planning and tax experience, operating in Canada, France, and Trinidad. In this period, he successfully negotiated 15 public and private merger and acquisitions. He was previously the interim-CEO of Northern Hunter Energy Inc., a predecessor company of Valeura Energy Inc. He has held the position of CFO at Vermilion Resources Ltd., Clear Energy Inc. and Sound Energy Trust. In addition, Mr. Bjornson is a past director of Bulldog Oil & Gas Inc., Bulldog Resources, and Aventura Energy.
Education: Bachelor of Commerce, University of Calgary, 1983; Chartered Accountant, Alberta, 1987.

Lyle Martinson, B. Sc., P. Eng.


Lyle Martinson is a professional engineer with more than 39 years of management, operations, and engineering experience in the oil and gas industry in Canada and internationally. Most recently, he held the position of Drilling and Operations Manager for Verenex Energy Area 47 Libya Limited, based in Tripoli. Prior to joining Verenex, he had a successful 28-year career with Chevron Corporation in Canada, the US Gulf of Mexico, California, Australia, and Indonesia, including 22 years in leadership roles managing organizations and projects of varying size and complexity. In his last assignment with Chevron, he was Manager of Well Engineering and Operations at Chevron Canada Resources. He has experience with both onshore and offshore operations, gas production, light oil and heavy oil production, EOR projects and exploratory well drilling. Lyle is a member of the Association of Professional Engineers and Geoscientists of Alberta (APEGA).
Education: B.Sc. Civil Engineering, University of Saskatchewan, 1978.

Rob Sadownyk, B.Sc.(Hon.), P. Geol.

VP Exploration

Rob Sadownyk is a professional geologist with 28 years of experience in the oil and gas industry. Prior to joining Valeura Energy Inc., Rob was Vice President Exploration and a co-founder of Berland Exploration Ltd., which was a successful privately-funded junior oil & gas company with tight gas assets in western Canada. Before co-founding Berland Exploration, Rob held the position of Senior Geologist with Vermilion Resources Ltd. for seven years and Canadian Hunter Exploration for eight years, gaining broad experience in tight gas reservoirs, carbonate, and foothills plays. Rob is a member of the Association of Professional Engineers and Geoscientists of Alberta (APEGA), the American Association of Petroleum Geologists (AAPG) and the Canadian Society of Petroleum Geologists (CSPG).

Education: B.Sc.(Honours) Geology, University of Calgary, 1988; Civil Engineering Diploma, Northern Alberta Institute of Technology, 1984.

Barry Wihak, A.B.Geol., P. Geol.

VP Business Development

Barry Wihak is a professional geologist with 33 years of experience in the oil and gas industry. Barry was formerly President and CEO, director, and co-founder of Cangea Energy, a privately held exploration and production company with a focus on Colombia. Prior to that he spent five years with Vermilion Energy Trust, as Business Development Advisor, instrumental in acquiring assets/corporations in France, the Netherlands, Australia, and Canada. During 22 years of earlier experience as an independent consultant and employee of junior oil and gas companies in Canada, Barry held various positions in exploration and production geological operations, as well as business development (Golden Horizon Exploration, Truax Resources, Richland Petroleum). Barry is a member of the Association of Professional Engineers and Geoscientists of Alberta (APEGA).

Education: A.B.Geol., Princeton University, 1978.