01Who we are

02What we do

03Where we're headed

04Key Stats

05Our Management Team

06Contact

Enabling the
[decentralized]
future.

The premier US-based, environmentally conscious, industrial-scale Bitcoin mining and digital asset company.

01 WHO WE ARE

[Renewable Powered Mining Operation]

We believe that the building blocks of the next generation of global financial infrastructure and a green energy future are one and the same.

GlobalXDigital "X". The premier US-based, environmentally conscious, industrial-scale Bitcoin mining and digital asset company.

[02] WHAT WE DO

[Securing the Global Network]

GlobalXDigital sits at the crossroads of technology and finance, building the foundation of the blockchain, one transaction at a time.

Our state-of-the-art, purpose-built mining facilities house the latest generation mining equipment and utilize green energy to unlock financial freedom for the masses.

[03] WHERE WE'RE HEADED

[Pioneering Possibilities]

We are building a future of renewable power, distributed financial freedom, and energy independence.

GlobalXDigital arrow. The premier US-based, environmentally conscious, industrial-scale Bitcoin mining and digital asset company.
[Driving the Digital Future]
17
YEARS ON-SITE
‍
320
MW OF ON-SITE
CAPACITY
100%
POWERED BY RENEWABLE ENERGY
150
COMBINED YEARS OF EXPERIENCE
5-9s
OF RELIABILITY
‍
[Our Management Team]
Terryl Zerby
chairman
  • Terryl Zerby serves as the Chairman of GlobalXDigital, a privately held bitcoin mining company located in Oklahoma City. He too is the founder and managing partner of Zerby Partners, LLC, the Manager of numerous real estate partnerships owning property in Oklahoma, Texas, and Florida. Mr. Zerby began his real estate career with Coldwell Banker Commercial (CBRE) in 1983.
  • Mr. Zerby has over 35 years of experience in the investment, development, and management of real estate. This experience includes activity in most real estate sectors with an emphasis toward retail and industrial properties.
  • Mr. Zerby is currently a Board Member and Director of NBC Bank, Oklahoma City, a member of the Board of Trustees Heritage Hall (a college preparatory school in Oklahoma City), a Board Governor of Oklahoma State University, an Advisory Board member of the Oklahoma City Chamber of Commerce, and a member of the International Council of Shopping Centers.
  • Mr. Zerby received a B.A. in Agricultural Economics from Oklahoma State University in 1983.
Mark Lerdal
Chief Executive Officer
  • Mark Lerdal has served as the Chief Executive Officer of GlobalXDigital since April 2023, and has been a board member of GlobalXDigital since 2021. Mr. Lerdal brings more than 30 years of executive leadership experience. Since July 2016, he has acted as an adviser to Northleaf Capital Partners in its US based investments in renewable energy. Additionally, he serves on the boards (including as Chairman) of several private companies.
  • From April 2014 until February 2022, he served as the Executive Chairman of Leaf Clean Energy Company, formerly listed on the LSE, a renewable energy and sustainable technology venture and growth capital investment firm. From December 2019 until March 2022, Mr. Lerdal was an independent director at Allied Minds, plc (LSE:ALM) an IP commercialization company focused on early stage technology development. Mr. Lerdal served as CEO of MP2 Capital, LLC, a photovoltaic development and finance firm, from 2009 through 2015. He was President of Hydrogen Energy California, a developer of a carbon capture and sequestration facility, from 2011 through 2013, and he acted as Managing Director at KKR Finance from 2006 through 2008. Earlier, he was President and CEO of Kenetech Corporation, a publicly traded supplier of goods and services to the electric utility industry. Subsequently, he participated in a take-private transaction of Kenetech together with an affiliate of ValueAct Capital.
  • Mr. Lerdal began his career as a corporate and securities attorney with Brobeck, Phleger & Harrison. He has a law degree from Northwestern University and an AB from Stanford University.
Carl Tipton
Chief Operating Officer
  • Carl Tipton serves as the Chief Mining Officer of GXD. He spent 20 years with Western Electric/AT&T/Lucent and Celestica in a variety of positions, including project engineer, engineering and logistics manager, production manager, purchasing director, CIO and director of engineering.  Additionally, Carl was a champion for Celestica’s Six Sigma Black Belts, LEAN manufacturing director and a graduate of AT&T’s Manufacturing Leadership Program.
  • Carl serves in various volunteer positions, including 2012 Chairman of the Edmond Area Chamber of Commerce board of directors. He served on the OU – Edmond Medical Center Community Council, Edmond Public Schools’ Foundation Board Chair, Francis Tuttle Business Incubator Admissions Committee and Regent Bank Market Advisory Board.  He is a past advisory board member of the Oklahoma State University College of Industrial Engineering and Management and past board member of the OSU Engineering Alumni Association.
  • Mr. Tipton received his bachelor’s degree from Oklahoma State University’s College of Industrial Engineering and Management, and later earned a master’s degree from Purdue’s College of Industrial Engineering.
Tom Carlson
chief financial officer
  • Tom Carlson, CPA, CGMA – Tom brings over 30 years of experience as a senior business leader in both publicly traded and privately held companies.  He has helped shape and implement strategies in his roles as Managing Director, Sales and Operations Senior Vice President, Chief Financial Officer and Vice President of Finance for companies ranging in size from approximately $50 million to $1.6 billion in net sales.
  • During the last three years, he has been consulting and serving as a contract CFO for a variety of clients as a partner with Core Business Advisors, PLLC.
  • Tom also spent 13 years in the auditing division of a Big Four public accounting firm, including 2 years in the firm’s executive office.  He holds a B.S. degree in Accounting from Oklahoma State University and is an active member of the Oklahoma Society of CPA’s (Ethics Committee member) and the AICPA.
Li Zhao
Procurement Director
  • Li Zhao serves as the Director of Procurement for GXD. She specializes in international trade with nearly twenty years of experience. Ms. Zhao is also the founder and president of China Iowa Group, an international trade and investment firm based in Des Moines, Iowa, where she leverages her background and relationships to deliver exceptional results for her clients. A native of China, she spent 25 years there before living in Holland, the U.K. and the U.S.
  • Ms. Zhao has held positions at Agricredit and De Lage Landen — subsidiaries of Rabobank Group. Her previous work experience also includes positions at a variety of international companies in China including New Oriental, Shanghai Phoenix Bicycle Import and Export Company, and American Greetings.
  • Ms. Zhao is the youngest board member of Bankers Trust's community board and also sits on the Board of Trustees for Grandview University.  She has been a guest on CNBC's "Closing Bell” on the Chinese overseas TV station CGTN.
  • Ms. Zhao holds undergraduate and Master’s degrees in Int’l Trade and Economics from Central South University in Changsha, China.
Greg Nelson
Operations Manager
  • Greg Nelson serves as the Operations Manager of GXD. He was previously the Electrical Engineering Designer, Manager and Project Manager for FSB Architects & Engineers in Oklahoma City. Greg was an integral part of the FSB team that collaborated with GXD on the design and build of our custom mining facilities.
  • Greg has produced construction plans and specifications for lighting and electrical distribution systems for federal, commercial and residential buildings utilizing state-of-the-art systems to meet applicable standards and performance objectives.
  • Greg served in the US Air Force as a Navigation/Avionics Technician and completed the Airmen Leadership School.
  • Mr. Nelson holds both Bachelor's and Master's degrees in Electrical Engineering from Oklahoma Christian University.
David Proman
Co-Founder, Strategic Advisor
  • David Proman is a Co-Founder and Strategic Advisor to GlobalXDigital.  He was the Company’s first CEO. In 2020, Mr. Proman transitioned from his role as a Partner and Managing Director at Fir Tree, a New York based private investment firm that invests worldwide in public and private companies, real estate and sovereign debt.
  • Mr. Proman has significant merger and acquisition and capital markets transaction experience, negotiating, structuring and overseeing more than $10 billion in transactions related to Fir Tree investments and portfolio companies: including mergers, IPO sponsorships, rights offerings, securitizations, bespoke financings and more than two dozen creative legal settlements. 
  • Mr. Proman served on the boards of directors of both public and private companies, including many commodity production, infrastructure and real estate businesses. He is an expert in corporate governance and has also formed and led various steering committees on behalf of large institutional investors.
  • Prior to his role at Fir Tree, Mr. Proman was a Portfolio Manager and Analyst at Kore Advisors, a fixed income investment manager.
  • Mr. Proman received a B.A in Economics from the University of Virginia in 2004.
R Christian Wyatt
Co-Founder, Strategic Advisor
  • R Christian Wyatt is a Co-Founder and Strategic Advisor to GlobalXDigital (“GXD”). He was the Company’s first Chief Strategy Officer.  Prior to GXD, Mr. Wyatt was the Head of Multi-Strategy Research at Angelo Gordon (“AG”) and was a Partner at the firm. In this role, Mr. Wyatt worked closely with AG’s Founder and Co-Chief Investment Officers, and was responsible for co-managing AG’s multi-strategy funds, overseeing AG’s credit and arbitrage research processes, as well as the creation and development of risk, trading and portfolio management analytics, big data efforts and other technology related investment initiatives.
  • Prior to joining AG, Mr. Wyatt was a Director of Fir Tree Partners. At Fir Tree, Mr. Wyatt invested in large, concentrated, opportunistic value investments across the capital structure and asset classes globally and was responsible for idea sourcing, deep dive fundamental research and analysis, trade implementation and activist efforts. Prior to Fir Tree, Mr. Wyatt was an Associate at Blackstone where he was a founding member of Blackstone Special Situations Investing Group.
  • Mr. Wyatt received an A.B. Honors degree in Economics with Citations in Spanish and Italian from Harvard College and was elected to Phi Beta Kappa. He is a CFA charterholder.