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Experienced Cross-functional Management Team

Robert Vallis

President & CEO, Director, MBA, P.Eng

Robert is an accomplished senior mining executive with a 28-year career in the mining sector, working with some of the most successful companies including 23 years with Barrick Gold and Yamana. Rob’s experience spans multiple functional areas including C-Suite leadership, corporate development, M&A, transaction development and execution, mine engineering & operations.

Jeremy Link

VP, Corporate Development, M.Eng., P.Eng

Jeremy has over 20 years of diverse expertise in exploration, mining, and capital markets. He has helped secure more than $200 million for mining ventures. His previous roles include senior positions with gold producers and exploration companies, as well as experience as a sell-side and buy-side mining analyst.

Gary McDonald

Director, MBA, B.Comm.

Gary MacDonald, MBA, B.Comm., is a seasoned mining and capital markets executive with over 30 years of experience spanning mining operations, venture capital, and corporate strategy. He is the President and CEO of American Mining Corporation and the Founder of Goldfunds Canada. Gary has led and advised projects across key jurisdictions including Canada, the U.S., Mexico, Greenland, Europe, and West Africa, with a focus on gold, silver, copper, and diamond assets. His background includes leadership in merchant banking, ESG, and impact investing, and he holds an MBA from Erasmus University and a B.Comm. from UBC.

Yu Cai Huang

CFO and Corporate Secretary, BA, MBA, CPA

Yu Cai Huang is a seasoned finance executive with broad experience in corporate finance, capital markets, and financial strategy, with a strong focus on the mining sector. He has served as CFO for many publicly listed companies and has acted for numerous junior and mid-tier mining companies, providing leadership in financial reporting, budgeting, governance, and capital raising. Yu Cai holds a B.A. in Economics from Shanghai International Studies University and an MBA from the Ivey Business School at Western University.

Experienced Columbia Team

Cesar Garcia

Lead Exploration Geologist, M.Sc.

Cesar brings over 19 years of experience in mineral exploration and advancing mining projects across Colombia. He previously served as Senior Geologist at AngloGold Ashanti, where he led exploration and discovered the high-grade Nuevo Chaquiro Cu-Au-(Mo) porphyry—Colombia’s largest copper porphyry deposit. Cesar leads all on-the-ground exploration activities, driving the advancement of the Quinchia project and the broader mid-Cauca porphyry belt.

Luis Felipe

General Manager, M.Sc.

Luis has 15+ years of expertise in environmental engineering and ESG strategy within the mining sector. Formerly with Mineros S.A., he developed and managed ESG and permitting strategies, earning community support and government approvals. With a Master’s in Environmental Engineering and a focus on Mining Law, Luis ensures the Quinchia project aligns with global best practices in sustainability and social responsibility.

Full on-the-Ground Team in Columbia

Cesar and Luis lead a fully staffed technical, ESG, and operational team based in Colombia, providing deep local knowledge, community engagement, and day-to-day execution across all Quinchia project activities.

Advisory Board

Dr. Ruben Padilla

Ph.D., B. Eng. (Geological Engineering)

Dr. Ruben Padilla is a highly respected geologist with over three decades of global mineral exploration experience. He is best known for his instrumental role in the discovery and advancement of several world-class deposits, including La Escondida in Chile—one of the largest copper mines in the world—as well as the Colosa and Gramalote gold projects in Colombia.  Dr. Padilla held several senior leadership positions at AngloGold Ashanti, where he served as Chief Geologist for the Americas and Exploration Country Manager for both Peru and Colombia. He brings deep technical knowledge, strategic insight, and a strong track record of delivering results across a wide range of geological environments.

He is currently the President and CEO of Sable Resources, where he leads exploration efforts across Latin America. Dr. Padilla is also the Founder and Chief Geologist of Talisker Exploration and serves on the board of Millennial Precious Metals Corp., further demonstrating his commitment to advancing high-potential mineral assets through innovation and disciplined exploration.

Juan Ma Uribe

BA, B.B.A.

Juan Ma, an accomplished financial professional, comes from one of Colombia’s oldest and most influential political families, including former Presidents, Cabinet Ministers, and Senators. As Managing Partner of Facila Capital, he provides financial services to high-net-worth and institutional investors in Latin America. His expertise and connections bolster Tiger Gold’s advancement of mineral projects in Colombia.

Sharyn Alexander

M.Sc., B.Sc.

Sharyn Alexander is a seasoned mining executive with over 20 years of experience in mineral exploration and development, bringing strong technical expertise and strategic insight to junior exploration companies. She is the founder of Terra Consulting and currently serves on the boards of the Association for Mineral Exploration BC (AME) and several publicly listed mining companies. Sharyn previously served as President of Sun Summit Minerals (TSX.V: SMN) and held technical roles with B2Gold, Barrick Gold, and SRK Consulting. She holds a B.Sc. in Geology from McMaster University, an M.Sc. in Geology from the University of Toronto, and an Advanced Diploma in GIS from BCIT.

Blake Beecher

Blake Becher, a mining expert specializing in Colombia’s emerald and gold sectors, excels in exploration, mine development, and sustainability. As founder of The Emerald Company, he introduced advanced grading, drone surveying, and tokenization. Blake’s expertise in geology, regulations, and community dynamics will support Tiger Gold in advancing the Quinchia Gold project to production.