Mr. Richings has served as a director of the Company since 1995 and as the Non-Executive Chairman of the Board since January 2012. He served as the Company’s Executive Chairman and CEO from 2007-2012, and as President and CEO from 2004-2007 and from 1995-2000. He has over 40 years' experience in development and operations in the mining industry. Previously, he was a director of Guyana Goldfields Inc., Midas Gold Corp., Allied Nevada Gold Corp., Zaruma Resources Inc., and Triumph Gold Corp. He was previously President of Atlas Corp. which at the time was Granges’ (Vista Gold’s corporate predecessor) largest shareholder and before that President of Lac South America, based in Chile. Mr. Richings, a mining engineer, is a graduate of Camborne School of Mines (UK) and has a Master of Science Degree from Queens University (Canada).

Mr. Clark has served as a director of the Company since 2001. He is a Chartered Professional Accountant and is the President of Investment and Technical Management Corp., a firm engaged in corporate finance and merchant banking, since 1999. He is currently a director of Russel Metals Inc. and Zephyr Minerals Ltd. He served as Chief Financial Officer and director of Polaris Geothermal Inc. from 2004-2009, and previously as a director of Crown Point Energy Inc., Thunder Energy Inc., APIC Petroleum Corporation and Alberta Clipper Inc., and a trustee of Thunder Energy Trust. He was Executive Chairman of Laurasia Resources Limited, an oil and gas company, from 1988 until its merger with Startech Energy Inc. in 1997. From 1982 to 1987, Mr. Clark was a Senior Manager with Thorne Riddell Chartered Accountants (now KPMG). He earned a Bachelor of Commerce Degree from the University of Witwatersrand in South Africa in 1977, and received a Higher Diploma in Accountancy from the University of Witwatersrand in 1979.

Mr. Eppler has served as a director of the Company since 2004. He is Managing Director at Capstone Headwaters, LLC. He is currently a director of Golden Minerals Company and Plata Latina Minerals Corporation. Previously, Mr. Eppler was a director of Frontier Mining Limited, Augusta Resource Corporation and Allied Nevada Gold Corp., Chairman and a director of NEMI Northern Energy & Mining Inc., Chief Executive Officer and a director of Coal International plc. Previously, with Newmont Mining Corporation, he held positions of Vice President of Newmont Capital, Ltd., President of Newmont Indonesia, Vice President of Corporate Development and Vice President of Corporate Planning. He also has considerable domestic and international banking experience with major U.S. banks. Mr. Eppler holds a Master of Science Degree in Mineral Economics from the Colorado School of Mines.

Ms. Friedman has served as a director of the Company since March 13, 2019. She is Senior of Counsel at Davis Graham & Stubbs LLP, where she was a partner from August 2000 through December 2016. Previously Ms. Friedman held various positions in the law department of Cyprus Amax Minerals Company law department including General Counsel and Associate General Counsel, and served as Vice President and General Counsel of Apex Silver Mines Corporation and its successor Golden Minerals Company, and Amax Gold Inc. Ms. Friedman has considerable experience in domestic and international mine development projects, including complex development and operations joint ventures, corporate and project finance, and operations matters. Ms. Friedman holds a Bachelor of Arts Degree in History from the University of Illinois and a Juris Doctor Degree from the University of Michigan Law School.

Mr. Ogryzlo has served as a director of the Company since 1995. Mr. Ogryzlo currently serves as part-time interim Chief Executive Officer and director of Camrova Resources (formerly Baja Mining Corp.) and was previously Chairman and interim President. He is also the non-executive Chairman of Golden Sun Resources and a director of Franco-Nevada (Barbados) Corp. Previously, Mr. Ogryzlo served as President, Chief Executive Officer and a director of Polaris Energy Corp., a renewable energy company, from May 2000 until his retirement in December 2010. Mr. Ogryzlo served as Interim CEO of Aura Minerals Inc. from June-December 2011. He served as President, Chief Executive Officer and director of Polaris Geothermal Inc., as a director of Tiomin Resources Inc., and as a director and Non-Executive Chairman of Birim Goldfields Inc. Mr. Ogryzlo served as President and Chief Executive Officer of Canatec Development Corporation, a resource management company, from 2000-2003, and as President and Chief Executive Officer of Black Hawk Mining Inc. and its subsidiary, Triton Mining Corporation (both gold mining companies), from 1997-2000, and was Chairman of SNC-Lavalin Inc., an engineering group. He earned his Bachelor of Mechanical Engineering Degree from McGill University in 1961, and his designation as a Professional Engineer from the Professional Engineers of Ontario in 1966.

Mr. Stevenson has served as a director of the Company since 2007. Former director of Uranium Resources Inc. from December 2013 – July 2017. He served as a director of Quaterra Resources Inc. from 2007-2014 and as its Non-Executive Chairman from 2008-2013. He is also a founding member of Bedrock Resources, LLC, a private resources financial advisory firm since 2010 and SOS Investors, a private resources investment firm since 2008. Previously, he was a director of Ivanhoe Mines Ltd. He is a senior mining executive who worked for Rio Tinto plc and related companies for 26 years. Mr. Stevenson held many senior positions in the group and prior to his retirement he was Global Head of Information and Technology and Global Head of Business Process Improvement. Formerly, he was Executive Vice President, Chief Financial Officer and a director of Comalco Ltd., and Chief Financial Officer and a director of Kennecott Corporation. Mr. Stevenson has a B.Sc. in Accounting from the University of Utah, is a CPA and spent four years with a predecessor to the firm PriceWaterhouseCoopers LLP.