ABC Supply Company Incorporated is a roofing supply company based in Beloit, Wisconsin. It also sells windows, gutters, and siding for residential and commercial. It was founded in 1982 by Ken Hendricks. There are currently 300+ stores nationwide. By the time of his death on December 21, 2007, Ken Hendricks was the #107 richest person in America according to Forbes October 2006 issue. President David Luck was named CEO to succeed him.