Greg is currently active as Chairman of three diverse companies: Spectro Alloys, an aluminum manufacturing company based in Rosemont, where he has been involved since 1989, Botanic Oil Innovations based in Spooner Wisc, a pharmaceutical and food supplement company, his most recent venture that he joined in 2006, and Polaris Industries, Inc. that designs, engineers, manufactures and markets snowmobiles, all-terrain vehicles, Victory motorcycles and the Polaris RANGER for recreational and utility use. He is a director of Valspar Corporation, a painting and coating manufacturing company and of Fabcon, Inc, a manufacturer and installer of precast concrete wall panels for virtually every type of structure. He is also a managing partner in Palen Property Management.
He was chairman of the Board of Regents of Saint John's University, 2001-2004 and an active member of the Board of Regents before that. He has also been active in a number of other organizations moving into leadership roles in his parish, in recreational organizations, local community charities, or those in which his children were active. He holds a B.A. from St. John's University and a M.B.A. from the University of Minnesota. He lives with his wife, Peg, in North Oaks, a northern suburb of St. Paul, MN. They have three adult children.