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Heather White has served as our Chief Executive Officer since February 2024 after joining us as our Chief Operating Officer in January 2021 and as a member of our Board of Directors since January 2026. Prior to joining us, Ms. White served as senior vice president and chief operating officer of Nickel Creek Platinum from August 2017 to January 2021. Ms. White has served as president of White Mining Consulting Inc. since January 2013. Prior to that, Ms. White served as vice president of mining at NOVAGOLD Resources Inc. from April 2011 to January 2013, and in senior management roles at Vale S.A. from February 2007 to March 2011 and Inco Ltd. and PT Inco from July 1995 to February 2007. Ms. White previously served as a director of Sinda Ltd. from January 2022 to January 2026 and as a director of Victoria Gold Corp. from June 2016 to June 2018. Ms. White holds a bachelor of engineering from Queen's University.

Andre van Niekerk has served as our Chief Financial Officer since March 2025. He is the owner and president of 1520955 BC Ltd. and has served on the board of directors of NexMetals Mining Corp. since April 2025. Mr. van Niekerk also served as chief financial officer of Sinda Ltd. from March 2025 to January 2026. Prior to joining us, Mr. van Niekerk served as chief financial officer of Gatos Silver from June 2022 to January 2025. During his tenure, he was a key member of the leadership team responsible for executing the strategy that restored investor confidence and culminated in the acquisition of Gatos Silver by First Majestic Silver Corp. Prior to working at Gatos Silver, Mr. van Niekerk served as chief financial officer of Nevada Copper Corp. from July 2020 to May 2022. Previously, Mr. van Niekerk served as executive vice president and chief financial officer at Golden Star Resources Ltd., where he advanced through key strategic, operational and financial roles over his 14-year tenure. Mr. van Niekerk began his career at KPMG in South Africa and Denver in various advisory and audit roles. He holds bachelor's degrees in accounting from both the University of South Africa and University of Pretoria. Mr. van Niekerk is a Certified Public Accountant.

Michelle Shepston has served as our General Counsel and Secretary since December 2025. Prior to joining us, Ms. Shepston served as executive vice president, general counsel and secretary of Hoonigan from March 2025 to December 2025. From August 2016 to March 2025, she served as executive vice president, chief legal officer and secretary of DMC Global Inc., a diversified industrial manufacturing company. During her tenure at DMC Global Inc., she oversaw its legal, compliance and risk functions. Prior to joining DMC Global Inc., Ms. Shepston was a partner and practiced with the Corporate Finance and Acquisitions Group at Davis Graham & Stubbs LLP, where she focused primarily on the mining and natural resource industries. Ms. Shepston brings to us expertise in corporate and securities law, mergers and acquisitions, equity and debt transactions, compliance and corporate governance. She has advised public and private company boards on issues of fiduciary duty, risk management and oversight. Ms. Shepston earned a juris doctor from the University of Denver College of Law and a bachelor of science from the University of Illinois.

Daniel Muniz Quintanilla has served as a member of our Board of Directors since May 2021. Mr. Muniz Quintanilla serves as a member of the board of directors of First Majestic Silver Corp., NOVAGOLD Resources, Inc. and Brookfield Infrastructure Partners L.P. Mr. Muniz Quintanilla is also a founding partner of Axkan Capital Partners S.L., and serves as a director and executive chairman of Sinda Ltd. Mr. Muniz Quintanilla served as the managing director and executive vice chair of Americas Mining (the holding company of the mining division of Grupo Mexico, S.A.B. de C.V. (Grupo Mexico)) from 2014 to 2018, as chief executive officer of Industrial Minera Mexico (the underground mining division of Grupo Mexico) from 2010 to 2014, and as chief financial officer of Grupo Mexico from 2007 to 2014. Mr. Muniz Quintanilla served as a director of Tharsis Mining S.L. from June 2022 until November 2025, as a director of Gatos Silver from April 2021 until it was acquired by First Majestic Silver Corp. in January 2025, and as a director of Hudbay Minerals Inc. from July 2019 until May 2024. He holds a law degree from Universidad Iberoamericana, in Mexico City, a master's degree in law from Georgetown University in Washington, D.C. and a master's degree in business administration from Instituto de Empresa in Madrid, Spain.

Douglas Groh has served as a member of our Board of Directors since July 2024. Mr. Groh served as a precious metals equity portfolio manager at Sprott Asset Management from 2020 to 2024, and prior to Sprott's acquisition of the Tocqueville Gold Fund, as a fund manager at Tocqueville Asset Management since 2003. Prior to that, Mr. Groh was director of investment research at Grove Capital from 2001 to 2003 and from 1990 to 2001 held investment research and banking positions at J.P. Morgan, Merrill Lynch and ING Bank. Mr. Groh began his career as a mining and precious metals analyst in 1985 at U.S. Global Investors. Mr. Groh currently serves on the board of directors of Sinda Ltd. Mr. Groh holds a master's degree from The University of Texas at Austin in Mineral Economics and a bachelor's degree from the University of Wisconsin - Madison in Geology.

Paul H. Zink has served as a member of our Board of Directors since January 2026. Mr. Zink has served as principal of Mining Financial Consulting LLC since May 2016 and has taught as a professor of practice at the Colorado School of Mines since January 2019. He previously served as chief financial officer of Pure Energy Minerals Ltd. from June 2017 to October 2018 and in various roles, including senior vice president and chief financial officer, at Rare Element Resources Ltd. from December 2013 to March 2016. Early in his career, Mr. Zink held positions at Koch Industries, Pegasus Gold and J.P. Morgan & Co. Mr. Zink served as a director of American Rare Earths Ltd. from August 2023 to June 2024, and has also served on the board of directors of and chaired audit committees for three junior mining firms in the western United States. He holds a bachelor's degree in economics and international relations from Lehigh University.

Anna El-Erian has served as a member of our Board of Directors since January 2026. Ms. El-Erian currently serves as the chair of the board of directors of Gabriel Resources Ltd. and has been a member of the board of directors of Gabriel Resources Ltd. since January 2021 and a member of the board of directors of Altius Minerals Corp. since May 2015. She previously served as a member of the board of directors of Altius Renewable Royalties Corp. from December 2020 to December 2024, Sabina Gold & Silver Corp. from March 2016 to April 2023 and Entree Resources from June 2015 to June 2022 and chair of the board of directors of Eco Oro Minerals Corp. from June 2011 to January 2021. Previously, Ms. El-Erian was a director and chief executive officer of Surgical Spaces Inc. from 2005 to 2011. She began her career in corporate law with Webber Wentzel Attorneys in 1990 before joining Investec Merchant Bank Limited in 1992. Ms. El-Erian holds a bachelor of laws from the University of the Witwatersrand in Johannesburg, South Africa.

Ali Reza Erfan has served as a member of our Board of Directors since October 2020. Mr. Erfan serves as vice chairman of Electrum, which he joined in 2007. Mr. Erfan is also a member of the board of directors of NOVAGOLD Resources Inc., Gabriel Resources Ltd., Sinda Ltd., Ajami Associates Limited, NetZeroAg Ltd and IBH Ltd. Previously, he served on the board of directors of Gatos Silver from October 2020 to January 2025, and as a founding board member of Leor Energy from 2003 until it was sold in 2007 to EnCana Oil & Gas USA Inc. Prior to joining Electrum, Mr. Erfan was a senior partner at 3i Group plc's London headquarters. Mr. Erfan graduated from the University of Oxford with bachelor's and master's degrees in politics, philosophy and economics (PPE). He holds an MBA from the London Business School. He is also a fellow of the Kauffman Institute of Venture Capital.

Nathan Ebeling has served as a member of our Board of Directors since January 2026. Mr. Ebeling has served as a partner of Ospraie Management, LLC (Ospraie Management) since 2006. At Ospraie Management, Mr. Ebeling has served in various positions, including as head of research and trading and as co-portfolio manager of Ospraie Real Return and Ospraie Real Return Enhanced Funds and as head of the Real Assets Strategy. In 2015, Mr. Ebeling led Ospraie's formation of Pandion Mine Finance, LP and served on its investment committee and board of directors. Additionally Mr. Ebeling co-led Ospraie's investment in Five Rivers Cattle Feeding and serves as head of its compensation committee. Mr. Ebeling also served on the board of directors of Virtus Industries Inc. Prior to joining Ospraie in 2005, Mr. Ebeling was a vice president in the J. Aron Commodities Group at Goldman Sachs from June 2000 to May 2005. Mr. Ebeling was first a field artillery officer and was later promoted to captain in the U.S. Army while stationed at Fort Lewis, Washington from 1996 to 2000. Mr. Ebeling holds a bachelor of business administration from the University of Notre Dame.

Dr. Thomas S. Kaplan has served as the Chairman of our Board of Directors since October 2020. Dr. Kaplan also has served as chairman, chief investment officer and chief executive officer of Electrum since January 2018 and served as chairman and chief investment officer of Electrum from March 2011 to January 2018. Dr. Kaplan also serves as chairman of the board of directors of NOVAGOLD Resources Inc. and as a member of the board of directors of Sinda Ltd. Dr. Kaplan previously served as chairman of Leor Exploration & Production LLC (Leor Energy), a natural gas exploration and development company, which he founded in 2003 and sold in 2007 to EnCana Oil & Gas USA Inc., a subsidiary of EnCana Corporation. Dr. Kaplan holds bachelor's, master's and doctoral degrees in History from Oxford University.