Dennis is the former President of the Utah Jazz and Chief Operating Officer of the Larry H. Miller Sports & Entertainment Group. He currently runs an independent consulting firm in Salt Lake City, UT.
A native of Salt Lake City, Dennis graduated from the University of Utah with a B.A. in history in 1973 and received his J.D. from the University of Utah College of Law in 1976. He is a founding member of the law firm of Winder and Haslam, has served as President of the Utah State Bar, Bar Commissioner, and on numerous other bar-related committees.