Tim N. Cheek

Gregory D. Winningham

Greg has been with Cheek Law Firm, P.L.L.C., since 2007, first as a legal intern, and then as an attorney after graduating from the Oklahoma City University School of Law in 2008. Greg was a Merit Scholar and President of his class in law school, served as a Senior Ambassador, competed on the American Association for Justice Trial Team, and received a CALI Excellence for the Future Award in Legal Research and Writing. Greg presently serves as a volunteer with Oklahoma Lawyers for Children.

Greg is also a veteran.  After over twenty years of service, Greg has recently retired from the United States Navy Reserve as a Chief Petty Officer. Greg served on active duty from 1991 to 1997 as a Hospital Corpsman, and later transitioned into the Navy Reserve to complete his career. He served onboard the U.S.S. America in 1995-1996, and was later deployed in 2004 in support of Operations Iraqi Freedom and Enduring Freedom, and again in 2013 in support of Operation Enduring Freedom. Greg enjoyed a wide variety of experiences in his military career, and is proud to have served his country.

Greg also enjoys hunting, fishing, golf, camping, reading, traveling and spending time with family.


Whitworth College, B.A. Economics, B.A. Metropolitan State College of Denver, B.A. Political Science, 2004

Oklahoma City University School of Law, J.D., 2008

Bar Admissions

Supreme Court of Oklahoma

U.S. District Courts for the Western, Northern and Eastern Districts of Oklahoma

Primary Practice Areas

Insurance Defense and Coverage

Bad Faith

Fraud Investigation and Litigation

Products Liability

Personal Injury

Toxic Torts

Residential and Commercial Construction

Defect Litigation

Premises Liability


Oklahoma Bar Association

Oklahoma County Bar Association

American Bar Association

Oklahoma Association of Defense Counsel

Luther Bohanon American Inn of Court

American Association for Justice

Phi Delta Phi Legal Fraternity

Oklahoma Claims Association