Management Team

Noah Verleun was appointed Chief Executive Officer (Interim) of Global Clean Energy Holdings in February 2024. He was previously appointed President of the Company in April 2022. Prior to that he served as Executive Vice President of Development & Regulatory Affairs and various other roles across the organization since 2010. Prior to joining Global Clean Energy Holdings, Mr. Verleun worked for JP Morgan PWM, Rockefeller University in its office of investments and OC&C Strategy Consultants in London. He received a Bachelor of Science degree in Economics and a Master of Public Policy degree from the University of Southern California.

Wade Adkins serves as the Chief Financial Officer for Global Clean Energy Holdings, Inc. Mr. Adkins previously served as the Chief Financial Officer at Crossbridge Energy Partners, a global energy transition-focused platform in the downstream sector. Prior to that, he served as the VP of Finance for Origin International, Inc., a waste oil recycling and mobile vapor recovery company. He also served in multiple accounting roles at Laureate Education, Inc., a higher-education public company, including Senior Director of Technical Accounting and Controller, and began his career with ten years at RSM US LLP between its assurance and transaction advisory services. Adkins is an active CPA and holds dual bachelor's degrees from Salisbury University in Accounting and Management Information Systems.

Antonio D’Amico joined Global Clean Energy Holdings as a Senior Vice President, Chief Administrative Officer and General Counsel on February 28, 2022. Prior to joining Global Clean Energy Holdings, he was Senior Vice President, Deputy General Counsel and Chief Ethics and Compliance Officer at AECOM, and served as Senior Vice President, Legal and Special Projects at AECOM before that. Mr. D’Amico served as Executive Vice President, and Corporate Secretary at Maverick Natural Resources, LLC, and Vice President, Investor Relations and Government Affairs at Breitburn Energy Partners. He was Senior Assistant General Counsel at Occidental Petroleum Corporation from 1996 to 2014, and began his legal career at Skadden Arps. He obtained a J.D. from DePaul University College of Law and a B.S.J. in Journalism from Northwestern University.

Mike Karst has created and implemented strategies for new initiatives while working with leading global agricultural companies holding positions in crop protection, forestry products, and global strategic planning. His focus is creating and capturing value from alternative crops, information technology and new production systems that are changing the agriculture marketplace. This focus brought Mr. Karst to start working with Sustainable Oils in 2007 when camelina was introduced in Montana. His breadth of experience helps Sustainable Oils build new value chains by bringing together cutting-edge technologies, large-scale production agriculture, and downstream processing competencies and capacities. Sustainable Oils is a wholly-owned subsidiary of Global Clean Energy Holdings. Karst was raised on a grain farm in Indiana and graduated from Purdue University with a degree in agronomy.