Mr. Ball currently serves as Senior Chairman of the Board for Bank of Texas, a division of BOK Financial Corporation. During his 16 year tenure at Bank of Texas, Mr. Ball has been elected to various executive positions including President, Chief Executive Officer and Chairman. Prior to Bank of Texas, he served as President of Comerica Securities, Inc., a subsidiary of Comerica Incorporated in Detroit. Mr. Ball currently serves on the Board of Directors for BOK Financial Corporation, the National Teachers Associates Life Insurance Company, where he is also a member of the audit committee, and at Southern Methodist University, where he resides on both the Executive Board of the Edwin L. Cox School of Business and the Executive Board of the Lyle School of Engineering. Mr. Ball earned his Bachelor of Science in Engineering and Master of Business Administration from Southern Methodist University.