Mark Brennan

Chairman of the Board

Mr. Brennan is currently President and CEO of Sierra Metals. He most recently served as President and CEO at Largo Resources Ltd. (“Largo”). Mr. Brennan joined Largo in 2005 and facilitated the acquisition of its flagship Maracas Vanadium Project in 2006 then advanced the project through a maiden resource, definitive feasibility and completing $300 million of financing for the project in 2012. Prior to Largo, Mr. Brennan served in various senior management roles for resource companies, including Desert Sun Mining, Linear Capital, Brasoil Corporation, James Bay Resources, Morumbi Oil and Gas, and Admiral Bay Resources. 

Chris Buncic, MBA, CFA, P.Eng

President, CEO, and Director

Mr. Buncic is President & CEO of Ascendant Resources Inc. since January 2013, and has held several senior management positions with James Bay Resources, Delshen Therapeutics Corp., and BreqWatr Inc. Prior to, Mr. Buncic was an institutional equity research analyst at Mackie Research Capital, and at Cormark Securities prior. Mr. Buncic is a CFA Charterholder, has a MBA from Schulich School of Business, and a B.A.Sc in Mechanical Engineering from University of Toronto.

Kurt Menchen


Mr. Menchen has over 37 years' of experience operating and managing mining projects, including over 20 years as General Manager at the Jacobina Gold project in Bahia State, Brazil where he successfully operated the underground project for Anglo American, Desert Sun Mining and eventually Yamana Gold, through low gold price environments. His prior experience includes Anglo American’s Vaal Reefs underground gold mine in South Africa and De Beers Goldfields in Angola. Mr. Menchen holds a degree in mining engineering from Federal University of Rio Grande do Sul, Brazil.

Stephen Shefsky


President & CEO, Founder, Director of James Bay Resources Limited, Co-founder of Brasoil do Brasil Exploracao Petrolifera S.A., a private oil & gas producing exploration company in Brazil, Founder of Silver Bear Resources Inc., Executive Chairman of Castle Resources Inc., and President of Cancap Investments Limited. Mr. Shefsky was the founder & former President & CEO of Verena Minerals Corp, now known as Belo Sun Mining Corp.

Robert Campbell, M.Sc., P. Geo


Mr. Campbell has a M.Sc. in geology from the Department of Earth Sciences, University of Western Ontario. He is currently the Vice-President, Exploration at Largo Resources. He has over 40 years experience in mining and exploration industry through Canada, United States and Latin America.