Denny is the executive director and secretary-treasurer of the Iowa Farm Bureau Federation and senior vice president-secretary of Farm Bureau Life Insurance Company and Farm Bureau Mutual Insurance Company. In this position, Denny also serves on the Farm Bureau Management Corporation. Before joining Farm Bureau, Denny was a high school business teacher and coach. He earned his degree in business education from the University of Northern Iowa. Denny is a member of the American Cancer Society Board of Directors, chairman of the board for Coaches vs. Cancer, chairman of the board for Iowa Hall of Pride, a past member of Keep Iowa Beautiful Board and a past member of the University of Northern Iowa Teacher Education Advisory Board. He is past president and member of the Ankeny school board, past member and former chairman of the Iowa High School Athletic Association board of control and a member of the board of directors for Valley Bank. Denny and his wife, Bev, live in Ankeny. They have three children and three granddaughters.