Greg A. Castro

Micah L. Adkison is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law and Oil and Gas Law. Micah L., who practices law in Oklahoma City, Oklahoma, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Micah L. is held by other top lawyers in the same geographic and legal practice area.

J. Christian Guzzy is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Tax Law. J. Christian, who practices law in Oklahoma City, Oklahoma, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which J. Christian is held by other top lawyers in the same geographic and legal practice area.

John D. Robertson is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law, Mergers and Acquisitions Law and Securities / Capital Markets Law. John D., who practices law in Oklahoma City, Oklahoma, has been recognized since 2007. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John D. is held by other top lawyers in the same geographic and legal practice area.

Mark E. Bialick entered the practice of law in 1981. His practice centers upon complex civil litigation, and, over the course of his nearly forty-year career, Mark has litigated and tried to verdict several of the State of Oklahoma’s seminal cases in the areas of insurance, particularly with respect to the duty of good faith and fair dealing, as well as cases involving catastrophic injuries and wrongful death. In 2006, Mark was inducted as a fellow in the American College of Trial Lawye...

William R. Norman Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Gaming Law and Native American Law. William R., who practices law in Oklahoma City, Oklahoma, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which William R. is held by other top lawyers in the same geographic and legal practice area.

William A. Johnson is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Litigation - Real Estate. William A., who practices law in Oklahoma City, Oklahoma, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which William A. is held by other top lawyers in the same geographic and legal practice area.

Practice Areas Insurance Defense and Litigation ; Construction and Architectural Law ; Premises Liability; Personal Injury and General Civil Litigation Memberships and Affiliations Admitted to bar, Oklahoma (1987), Vermont (1988) Oklahoma County, Cleveland County and Oklahoma Bar Associations Member, sections on Civil Procedure, Evidence, Professionalism and Communications Education and Background Born Portland, Maine (1958) University of Oklahoma (B.A., 1983) University of Oklahoma (J.D., 1987)

Joseph P. Hogsett is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Real Estate and Real Estate Law. Joseph P., who practices law in Oklahoma City, Oklahoma, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Joseph P. is held by other top lawyers in the same geographic and legal practice area.

Melissa began her legal career in-house with a Fortune 500 oil and gas company. Since that time, her practice has focused on oil, gas, and energy law , including the preparation of drilling and division order title opinions across Oklahoma, Texas, and North Dakota. Her work frequently involves the preparation of curative documents, probate-related matters, and support in litigation for oil, gas, and renewable energy clients. In addition to her energy law practice, Melissa represents clients i...

R. Ryan Deligans began practicing law in 2003 and received his Juris Doctorate from the University of Oklahoma College of Law where he was honored as the Outstanding Graduate in the area of Trial Practice and Procedure. His practice has been focused on complex litigation involving Insurance Law, Manufacturer’s Product Liability, and cases involving catastrophic injury or death. Ryan is annually selected by his peers for inclusion in Super Lawyers Magazine. He has been selected as a Top ...