Oklahoma State University (Bachelor of Arts. University of Oklahoma (Juris Doctor, 1979). Omicron Delta Kappa; Blue Key.
Phi Delta Phi. Recipient, American Jurisprudence Award.
Working as a partner of MCKINNEY, STRINGER & WEBSTER. Admitted to the bar, 1979, Oklahoma. Major clients of GARY DERRICK: AT&T Technologies, Inc. Allied Materials Corporation.
Allstate Insurance Co, American States Insurance Co, Arkla Inc. Associates Commercial Corp. Bank of Oklahoma, N.A.
W.H. Braum, Inc.; CNA Insurance Group. Capital National Bank. The Charles Machine Works, Inc.
City Bank & Trust Company, Commercial Bank, N.A. Continental Carlisle. Dean Witter Reynolds, Inc.
Employers Casualty Corporation. Halliburton Services. Hardage Steering Committee.
Hardage/Criner Superfund Site. The Hertz Corporation. The Kemper Group; Kerr-McGee Corporation.
Lamson & Sessions Company, Macklanburg-Duncan Company. Mercy Hospital, Mutual Of Omaha. Northbrook Property & Casualty.
Northland Insurance Company. OML Municipal Assurance Corporation. Occidental Fire and Casualty.
Panhandel Eastern Corporation. Reserve Petroleum Company. The Robert S and Grayce B. Kerr Foundation, Inc.
Scottish and York Insurance Company. Shawnee Medical Center. W. Silver, Inc.; Transport Insurance Company.
W. R. Grace & Co; Weyerhauser. Yukon National Bank.
Member Oklahoma State University Foundation, Stillwater, 1983—1989, University Foundation, Norman, since 1982. Member conductor's circuit Oklahoma Symphony Orchestra, 1981—1988, Oklahoma Philharmonic, 2001—2006. Chairman constitution and canons committee Episcopal Diocese of Oklahoma, since 1999.
Board directors Historic Preservation, Inc., since 1990. Board directors fund policy board EDGE, since 2006. Member of American Bar Association (taxation and corporation section, banking and business law section), American Society Corporation Secretaries (president Oklahoma-Arkansas chapter 1994-1995), Oklahoma County Bar Association (board governors young lawyers division 1981-1982), Oklahoma Bar Association (chairman business association section 1985-1987, since 2004, outstanding contribution to continuing legal education, Earl Sneed award 1997), Oklahoma City Boat Club, Oklahoma City Golf and Country Club.
Married Susan Adele Goodwin, December 22, 1979 (divorced June 1981). Married Francys Hollis Johnson, May 3, 1986. Children: Meghan, Drew, Jane.