David McMillan is a former executive of Minnesota Power, where he served in a variety of roles from 1989 to 2018. He received a bachelor of arts degree in economics and history from the University of Minnesota Duluth and a law degree from the University of Minnesota.
McMillan currently serves as chair of the Saint Lawrence Seaway Development Corporation Advisory Board and is a member of the University of Minnesota Foundation Board of Trustees. He previously served as the board chair of the Minnesota Chamber of Commerce, the Natural Resources Research Institute, the Area Partnership for Economic Expansion, and Goodwill Industrial Vocational Enterprises. McMillan previously served as Chair of the Board of Regents.