ABC Supply made its fourth acquisition since June with today's announcement that it bought DRI Supply, a three-unit distributor of drywall, roofing, and insulation products.

ABC will continue to serve customers from DRI's locations in San Andreas, Calif., Merced, Calif., and Carson City, Nev. According to a news release from the company, ABC says the deal will allow it to enhance its service to both existing and new markets and strengthen relationships with professional contractors.

ABC Supply previously acquired one-unit New Jersey dealer, Landis Supply, in August. ABC also added its 12th store in Pennsylvania with its July acquisition of Alliance Wholesale Supply, an 18-year-old roofing dealer with a single location in Johnstown, Pa. In June, ABC Supply acquired G & F Roof Supply, a roofing products dealer with stores in Anaheim, Whittier, and Gardena, Calif.

ABC Supply is the biggest company on the ProSales 100, having posted sales of $9.33 billion in 2017, 99% of it to pros. Headquartered in Wisconsin, ABC Supply has more than 700 locations nationwide.