Mr. Grissom began his career practicing law, and later became a partner in the firm of Greenebaum Grissom Doll Matthews & Boone. From 1969 to 1973 he served as Executive Vice President of Humana, Inc. From 1973 to 1989, he held various senior positions, including Chairman and CEO of Citizens Fidelity Bank & Trust and Vice Chairman of its successor, PNC Financial Corp.
He is now Chairman of Mayfair Capital, a private investment firm. and several other privately held companies. He is former Director of Humana, Inc., Providian Financial Corp., PNC Financial, Inc., LG&E Corporation, Columbia/HCA Healthcare Corp., Regal Cinemas, Transco Energy, Inc., YUM Brands, Inc., and Sphere Drake Holding, LTD.
Mr. Grissom is a graduate of Centre College and the University of Louisville Law School. He served as Chairman of the Board of Trustees of Centre College for more than 20 years and continues to serve as a Life Trustee. He served as Chairman of the Kentucky Council on Higher Education, Chairman of the Louisville Chamber of Commerce, and Chairman of the Kentucky Center for the Arts. Currently, Mr. Grissom serves as Chairman of the Board of the University of Louisville.