Thomas M. Clay is Managing Member of Epacria Capital Partners, a single-family office based in Boulder. Thomas and his late father were active investors in early stage technology, medical, and natural resource companies, and he now manages a portfolio of those companies. He currently serves on the boards of several small businesses including Oxurion, Golden Queen Mining Company, Arradiance, Covesion, and PRIME AE Group. He also serves as Chairman of the Clay Mathematics Institute and as an advisory board member of the Harvard-Smithsonian Center for Astrophysics. Thomas is a graduate of Harvard College, Oxford University, and Harvard Business School. 

Thomas moved to Boulder in 2017 with his wife Yvona, who is an Assistant Professor in Classics at CU Boulder. They have no children but a much-loved, very spoiled Welsh Terrier. Thomas is an enthusiastic but not especially skillful skier. He is a committed home cook, and prior to COVID he enjoyed travel for the express purpose of tracking down unusual food. He spends too much time playing computer and board games.