Greyson co-founded DISA® in 2018 and serves as CEO & President of DISA Uranium. A Wyoming-based technology company pioneering High-Pressure Slurry Ablation (HPSA) for mineral recovery and mine remediation. A military veteran, licensed attorney and former policy advisor, Greyson has led DISA from concept to national deployment, raising over $50 million and building a team of over 40 people. With degrees from Georgetown and the University of Wyoming, he brings deep expertise in energy, law and leadership, and remains committed to advancing U.S. energy security and environmental innovation from his home state. Greyson lives in Casper, Wyoming with his wife and two sons.

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John Lee is the Co-Founder and Chief Operating Officer of DISA Technologies, where he leads company-wide operations, talent development, and strategic execution as the company brings its patented HPSA technology to market. Since co-founding DISA in 2018, he has helped grow the company from a startup to a 45+ person team and helped raise over $50M for the company. With an MBA from the University of Wyoming and a Ph.D. candidate at the University of British Columbia, John combines deep industry insight with a passion for scalable solutions that restore land, recover critical minerals, and create lasting impact. John lives in Casper with his wife and three children.

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Kristin Walker serves as DISA's Chief External Affairs Officer, where she leads government affairs, policy strategy, communications and stakeholder engagement to advance deployment of DISA’s High-Pressure Slurry Ablation (HPSA) technology. Based in Jackson, Wyoming, Kristin brings over two decades of senior-level experience at the intersection of politics, public policy, and strategic communications. She previously served as Chief of Staff to U.S. Senator Cynthia Lummis, overseeing five offices and a multi-million-dollar operations budget while driving policy and messaging on energy, natural resources, public lands, and digital innovation. Kristin has advised governors, senators, and members of Congress, and built a nationally recognized public affairs firm with a client portfolio spanning government, industry, and nonprofits. A graduate of the College of William & Mary, Kristin has deep roots in Wyoming and a proven track record of forging public-private partnerships that drive results. She serves as Co-Chair of the Smithsonian American Women’s History Museum Making History Network Wyoming Committee and on the board of the Louisa Swain Foundation and the Wyoming Council for Women.

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Stephen currently serves as the Chief Regulatory Affairs Officer at DISA Uranium, and is responsible for compliance with Federal and state radioactive materials regulations, occupational health and safety regulations, and other environmental regulations that govern the use of HPSA. His experience includes over 30 years characterizing and remediating hazardous and radioactive waste sites, regulating uranium mills, and consulting for the uranium mining and milling industry. Furthermore, Stephen served as the Mill Manager at the Cotter Uranium Mill in Canon City, Colorado, responsible for the decommissioning and environmental restoration of this facility. Stephen possesses a B.S. in Geology from the University of Maryland; a Certificate in Civil Engineering from Johns Hopkins University; and an M.S. in Geological Engineering from the University of Idaho. He also holds a Professional Geologist license (Pennsylvania, PG-000530-G) and holds certifications as a Certified Safety Professional, and a Certified Hazardous Materials Manager.

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Jay serves as DISA Uranium’s Chief Commercial Officer. With over 11 years of experience in investment banking and private equity, Jay is responsible for all aspects of DISA's financial strategy. 
Prior to joining DISA, Jay was a Director on the investment banking team for TD Securities based in Vancouver. Prior to that Jay worked for Parallel49 Equity on the private equity team and BMO Capital Markets on the mining investment banking team. Jay has extensive experience in capital raising, mergers & acquisitions, capital markets strategy, and corporate strategy. Known for his strong analytical skills and deep understanding of markets, Jay has advised and executed on several high-profile complex transactions throughout his career with a particular focus on mining and technology. 
At DISA, Jay is excited to leverage his strategic mindset and experience navigating complex financial landscapes to ensure continued growth and financial success of the Company.
Jay holds a bachelor of commerce degree from McGill University (honors).

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Darren is the General Manager, Uranium Strategy at DISA Uranium, where he leads the strategy and execution of the company’s uranium remediation and recovery initiatives. Prior to DISA, he worked at Evok Innovations, an industrial innovation-focused venture capital fund investing in and supporting transformative technologies across heavy industries. Darren brings a strong alternative finance and business lens to complex industrial and infrastructure opportunities. He holds a Bachelor of Commerce (Honours) in Finance from the Sauder School of Business at the University of British Columbia.

Ryan is General Counsel at DISA Uranium and has the privilege of representing the company as its legal counsel.  As DISA's lawyer, he advises the company and its leadership on regulatory, governance, personnel, litigation, permitting, and other legal matters.  Most recently, Ryan worked as President and General Counsel of a large ranching and conservation operation spanning over 900,000 acres in central Wyoming.  He was appointed Director of the Office of State Lands and Investments under former Governor Matt Mead and served as Deputy Chief of Staff, Endangered Species Act Policy Coordinator, and Natural Resources Policy Advisor to former Governor Dave Freudenthal.  Ryan has significant experience in federal and state trust land management, planning, and permitting.  Ryan serves on the Wyoming Business Council and Cheyenne LEADS boards of directors and various non-profit boards.  Ryan and his wife have two sons and reside in Cheyenne, where they enjoy supporting the Wyoming Cowboys (B.S. 1998, J.D. 2001) and spending time in the mountains together.

Josh Clelland serves as DISA Uranium’s Vice President, Conventional Operations, where he leads the development and operation of DISA’s conventional uranium assets. He brings more than 20 years of mining industry experience spanning operations, engineering, capital markets, and corporate planning and strategy. Prior to joining DISA, Josh held progressively senior leadership roles with IsoEnergy and Kinross Gold and has experience across uranium, gold and base metals, supporting both open‑pit and underground operations and projects in Canada, the United States, and South America. Throughout his career, Josh has led teams of more than 300 professionals, managed complex operating and capital budgets, and advanced mining projects from early‑stage concept through execution. A core focus of his leadership approach is fostering strong safety cultures, operational discipline, accountability, and workforce engagement across all levels of the organization. Fluent in Spanish, Josh also brings experience working across multicultural and international operating environments. Josh holds a Bachelor of Applied Science (B.A.Sc.) in Mineral Engineering from the University of Toronto, is a Professional Engineer (P.Eng.) in Ontario, Canada, and is a CFA charterholder.

Dave Todaro serves as DISA Uranium’s Director of Geology where he is leading the characterization of mineral assets focusing on determining resource potential.  He brings a strong foundation in underground/surface mining geology and resource classification to the team from his time spent in Nevada and Colorado.  Prior to joining DISA, Dave oversaw Kinross Nevada production geology, and filled similar roles for both Aurcana Silver and Barrick Gold before that.  His technical background focuses on drilling, production, reconciliation, and digital workflows.  Dave holds a bachelors degree in Geology from Fort Lewis College in Durango, Colorado.  

Tyler Johnson serves as Exploration Geology Manager at DISA Uranium, drawing on deep Colorado Plateau uranium expertise gained through exploration roles at Energy Fuels and IsoEnergy. In addition to uranium, his background spans gold and potash exploration, giving him broad experience across multiple commodity types and deposit styles. His technical strengths center on drilling and subsurface mapping, supporting resource definition and exploration programs from target generation through development. Tyler earned his Bachelor's degree in Geology from the University of South Alabama.

Nick Proctor serves as DISA Uranium’s Director of Resource where he leads the commercialization and characterization of mineral assets at DISA Technologies, where he focuses on evaluating resource potential, determining asset value, and guiding strategic acquisition efforts. He brings a strong foundation in mineral economics along with extensive experience spanning project evaluation, valuation modeling, and business development. Prior to joining DISA, Nick led evaluation teams at Burgex Mining Consultants and supported major M&A and growth initiatives at Barrick Gold/Nevada Gold Mines. His background includes both technical assessment and direct transactional experience, giving him a balanced perspective on how geologic potential translates into commercial opportunity. Nick holds a master’s degree in Mineral & Energy Economics from the Colorado School of Mines.

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Taylor Vanlandingham serves as DISA Uranium’s Director of Human Resources, where she leads the company’s people strategy and HR operations. She will focus on building scalable HR systems and infrastructure across talent acquisition, leadership development, employee engagement, performance management, and HR compliance. Before joining DISA, Taylor spent more than a decade in human resources leadership within a rapidly growing organization. She brings extensive experience in building and leading HR strategies through periods of significant growth and change, along with a genuine passion for creating strong, collaborative cultures where people and organizations can thrive. Outside of work, Taylor enjoys spending time with her family, traveling, playing volleyball, and enjoying the outdoors in Colorado.

Fred serves as DISA Uranium’s Director of Land, responsible for managing land operations for mine remediation. His responsibilities include determining ownership, developing and managing landowner relations, drafting agreements, initial site inspection, and preliminary sampling. He works closely with the legal, engineering, and regulatory components of our remediation business. Prior to joining DISA, he was the Senior Manager Land-West for Peabody Energy, responsible for the management of land and leases at seven different mine sites in four states. Before joining Peabody, he was a Realty Specialist with the General Services Administration in Ft. Worth, Texas, and a Subject Matter Expert with Boeing in the field of Hyperspectral Imagery. He graduated from the University of Wyoming with a BS in Energy Resource Management & Development, with a concentration in Professional Land Management. He is also a proud 13-year Air Force Veteran. Fred is on the Industry Advisory Board for the UW School of Energy Resources – Professional Land Manager concentration. He is a Registered Landman with the American Association of Professional Landmen.