Mr. Marshall has over 35 years of experience in providing financial, tax and legal advice within the energy, real estate and privately owned family and start-up business environments. Some of that experience was gained from an innovative pump technology startup, GeoTek Energy, where he served as CEO.  Mr. Marshall led GeoTek’s successful efforts to acquire a DOE multi-phase grant and matching private investor funds for the development and testing of its patented Gravity Head Energy technology.

Prior GeoTek, Mr. Marshall worked as CFO and General Counsel for  J.D. Murchison Interests, Inc., a privately held holding company with oil and gas exploration, single and multi-family real estate development and financial investments.  Mr. Marshall’s background includes experience in Big-4 public accounting, legal services, energy consulting and regulatory work.

Mr. Marshall has a Bachelor of Accountancy degree with Special Distinction from the University of Oklahoma and earned his Doctor of Jurisprudence degree from the University of Texas in Austin. Mr. Marshall is licensed as an attorney and a Certified Public Accountant in Texas and as a CPA in Florida.