David Gleason practices primarily in the area of civil litigation and appeals – especially those involving oil and gas matters. His experience includes lease cancellation actions, quiet title actions, unpaid and underpaid royalty claims, surface use disputes, pollution matters, trespass and other tort claims, construction disputes, investment fraud matters, breach of contract, and general business disputes. David has won multiple favorable jury verdicts for clients and successfully obtained several reversals on appeal.

David also has experience in representing clients before Oklahoma state agencies including the Oklahoma Corporation Commission, Oklahoma Water Resources Board, and the Oklahoma Department of Environmental Quality.

David also advises in clients in transactional matters, probate and trust matters, and renders mineral title opinions.


  • University of Oklahoma College of Law, J.D. with Honors
    • Member, Order of the Coif
    • Member, Oklahoma Law Review
    • Received 5 American Jurisprudence Awards for earning the highest overall grade.
    • Recipient of Comfort “Top Ten” Scholarship
  • University of Oklahoma, B.A. with distinction
    • Elected to Phi Beta Kappa Society

Professional memberships

  • Oklahoma County Bar Association
  • Chairperson-Elect – Energy and Natural Resources Law Section of the Oklahoma Bar Association
  • Oklahoma City Mineral Lawyers Society
  • Admitted in all Oklahoma state courts
  • Admitted in U.S. District Courts for Eastern, Northern, and Western Districts of Oklahoma
  • Admitted in U.S. District Court of Colorado
  • Member of Oklahoma County Bar Association


  • Born in Bartlesville, Oklahoma
  • Moricoli, Kellogg & Gleason, P.C., 2012 – present

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