Our Experts
Years.
Few teams can match a century of combined mineral exploration expertise spanning multiple continents. Add exceptional service, unwavering support, and a passion for the work they do and where they do it – this is REP.
Joshua Sperry
Chief executive officer
Joshua Sperry, CEO, brings over 15 years of expertise in oilfield development, optimizing operations, and driving strategic growth. With a proven track record of scaling production and leading private equity-backed ventures, he has earned a reputation as a respected industry leader.
Joshua holds degrees in Petroleum Engineering (2012) and Agricultural & Applied Economics (2004) from Texas Tech University, combining technical expertise with economic insight. Based in Midland, TX, he enjoys life with his wife and three children, balancing his professional success with a deep commitment to family and community.
Danielle Gallo
Chief Operating Officer
Danielle Gallo has 25 years of experience in rural economic development, serving as a founder and board member of numerous nonprofit organizations. A 23-year resident of Marathon, TX, she has played a key role in both public and private initiatives, leveraging her expertise in hydrogeology to support sustainable resource use.
As a funding specialist for municipal infrastructure projects, Danielle has helped develop strategic, community-driven industry while championing economic diversity in underserved regions. Danielle is deeply committed to the history, culture, growth and preservation of the Trans-Pecos region and spends her free time rock hunting and practicing lapidary.
Sam Pierce
Chief Geologist
With two decades of experience in mineral exploration across the United States, Africa, and Latin America, Sam Pierce is a distinguished figure in the field. He is credited with discovering the advanced argillic Olympus Project in Peru and the Golden Mile gold porphyry in Nevada. For over 15 years, Sam has managed projects from greenfield to advanced stages, working with a diverse range of deposits including rare earth elements, volcanogenic massive sulfides, narrow quartz-gold veins, Iron Oxide-Copper-Gold, and copper-gold porphyries.
Jacob Burris
Chief Financial Officer
Bringing nearly 20 years in banking, Jacob Burris worked as a teller and in deposit operations through college and steadily advanced to a Senior Vice President managing a $120 million portfolio. His expertise spans real estate, oil and gas production and services, and commercial and industrial sectors.
A West Texas native, Jacob grew up on a small farm near Lubbock, where he developed a lifelong appreciation for the land. He earned his finance degree from Lubbock Christian University and moved to Midland in 2011 to pursue his career. Today, he lives there with his wife and daughter and enjoys playing golf in his free time.
Tom Selman
Member, Supervising Geologist
Tom Selman is the President and CEO of Selman and Associates, LTD, a company that has been a leader in the geological field for 41 years. Under his leadership, the firm has successfully completed thousands of projects both in the United States and internationally. Tom is renowned for developing advanced gas analysis equipment and cutting-edge software that have transformed mineral exploration and geo logging. He supplies REP with the skilled geologists, geo-technicians, and mapping specialists essential for their operations.
Terry Foley
Founder & Co-chair
EXPAND FOR BIO
With over 35 years of diverse experience in hydrocarbon and non-hydrocarbon mineral exploration, Terry Foley’s expertise extends across multiple continents, where he is a well-known expert in exploratory drilling, geo-coring and directional drilling operations. Terry has made significant contributions to downhole technology, having developed essential tools such as downhole turbine generators for Measurement While Drilling (MWD) and articulated subs crucial for tight radius directional operations. As a seasoned entrepreneur, he has launched numerous startups and contributes a wealth of experience, overseeing all facets of the company’s development with precision and foresight.
Milli Brown
Managing Member & Co-chair
EXPAND FOR BIO
Milli has spent decades supporting entrepreneurs through both investment and insight. As one of the nation’s leading independent book publishers – with a keen eye for promising business ventures – she’s always been drawn to compelling stories with purpose at their core. That’s exactly what she saw in REP and its incredible leadership team. From the start, she recognized its significance and has played an instrumental role in its establishment and future growth. Her diverse portfolio, which includes ventures in space, real estate, and mining exploration, makes her a strategic and dynamic partner in helping REP achieve its full potential.