John S. Oldfield

John H. Edwards is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law, Business Organizations (including LLCs and Partnerships), Corporate Law and Energy Law. John H., who practices law in Oklahoma City, Oklahoma, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John H. is held by other top lawyers in the same geographic and legal practice area.

Parker is a founding partner and co-manager at Ball Morse Lowe PLLC , where he brings more than 20 years of experience handling matters involving oil, gas, and energy law, estate planning, asset protection, business matters, and real property. His practice includes advising clients on Business Organizations, including LLCs and partnerships, as well as Real Estate Law . Through his work, Parker assists individuals and businesses with complex transactions and practical legal strategies designed...

Courtney K. Warmington is an advisory director in Crowe & Dunlevy’s Labor and Employment Section. Since joining the group in 1999, Ms. Warmington has successfully represented management in cases brought by employees under Title VII of the Civil Rights Act, the Americans With Disabilities Act, the Age Discrimination in Employment Act, the Family and Medical Leave Act, Oklahoma’s Workers’ Compensation laws, and the Fair Labor Standards Act. In addition to her litigation pr...

Katherine Taylor Loy has practiced law since 1992 and concentrates on Insurance Law, Litigation, Personal Injury, and Products Liability. She has been admitted to practice in Oklahoma, the U.S. District Court, Eastern, Northern and Western Districts of Oklahoma, the U.S. Court of Appeals, Tenth Circuit, and the U.S. Supreme Court. Katherine belongs to the Oklahoma County and Oklahoma Bar Associations and earned her Juris Doctor from the University of Oklahoma. She graduated with honors as a m...

Sam Fulkerson’s practice is focused on the representation of management in all phases of the employment relationship, including litigation before federal and state courts, regulatory and administrative agencies, and in arbitration matters. He also handles litigation matters involving the enforcement of non-competition and confidentiality agreements, breach of employment contracts, handbook and personnel policy violations, wage and hour disputes, and other disputes arising out of the emp...

Jeremy Tubb is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Litigation - Labor and Employment. Jeremy, who practices law in Oklahoma City, Oklahoma, has been recognized since 2008. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jeremy is held by other top lawyers in the same geographic and legal practice area.

Mary Holloway Richard is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative / Regulatory Law, Health Care Law and Litigation - Health Care. Mary Holloway, who practices law in Oklahoma City, Oklahoma, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mary Holloway is held by other top lawyers in the same geographic and legal practice area.

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.

Steven C. Davis is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law, Mergers and Acquisitions Law, Nonprofit / Charities Law, Tax Law and Trusts and Estates. Steven C., who practices law in Oklahoma City, Oklahoma, has been recognized since 1993. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Steven C. is held by other top lawyers in the same geographic and legal practice area.

Gary W. Derrick specializes in corporate and securities law, including mergers and acquisitions, ’34 Act reporting, private equity and debt financing, venture capital financing, business formation and restructuring, corporate governance, and general business contracts. His clients are in oil and gas, technology, hospitality, agriculture, manufacturing, retail and professional services.