Kristin M. Simpsen

As a founding partner at Ball Morse Lowe PLLC , Zach focuses his practice on oil, gas, and energy matters , business law , and Real Estate Law , serving clients in Oklahoma City, Oklahoma and across the region. He approaches each matter with an appreciation for his clients’ time and resources, working to provide practical, efficient, and cost-conscious legal solutions for complex legal and business issues. Zach represents companies operating throughout Oklahoma, North Dakota, Montana, W...

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...

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...

Len Cason is a lawyer recognized by Best Lawyers in the practice areas of Corporate Law, Tax Law and Trusts and Estates. Len practices law in Oklahoma City, Oklahoma Best Lawyers has recognized Len Cason since 1993. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Len Cason is held by other lawyers.

Amy brings more than 25 years of experience in trial and appellate practice, with a career shaped by leadership roles and in-depth involvement in Family Law matters. Her background includes serving with Oklahoma Child Support Services, where she helped lead the state’s implementation of the Uniform Parentage Act, as well as her service as a District Judge for the Cherokee Nation. This range of experience provides her with a well-rounded understanding of family law issues affecting indiv...

Since 2006, I have served as an advisor and legal counsel to individuals and families across a wide geographic region, including communities from Dallas to St. Louis. My practice focuses on Family Law matters, including divorce and child custody disputes that directly affect family relationships, financial stability, and long-term planning. I also represent clients in complex guardianship cases, particularly those involving multi-state or international considerations. Practicing law has been ...

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.

Joseph P. Hogsett is a lawyer recognized by Best Lawyers in the practice areas of Litigation - Real Estate and Real Estate Law. Joseph P. practices law in Oklahoma City, Oklahoma Best Lawyers has recognized Joseph P. Hogsett since 2010. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Joseph P. Hogsett is held by other lawyers.

Lori F. Winland is a lawyer recognized by Best Lawyers in the practice areas of Employment Law - Management, Labor Law - Management and Litigation - Labor and Employment. Lori F. practices law in Oklahoma City, Oklahoma Best Lawyers has recognized Lori F. Winland since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Lori F. Winland is held by other la...

Amy J. Sine is a lawyer recognized by Best Lawyers in the practice areas of Litigation - Trusts and Estates, Nonprofit / Charities Law and Trusts and Estates. Amy J. practices law in Oklahoma City, Oklahoma Best Lawyers has recognized Amy J. Sine since 2003. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Amy J. Sine is held by other lawyers.