BMC Stock Holdings, Inc., formerly Stock Building Supply Holdings, Inc. is a diversified lumber and building materials (LBM) distributor and solutions provider that sells to construction and repair and remodeling contractors. The Company operates through two segments: Geographic divisions and Coleman Floor. The Geographic divisions segment includes East and West divisions. The Coleman Floor segment offers professional flooring installation services. Its products are lumber and lumber sheet goods, millwork, doors, flooring, windows, structural components, such as engineered wood products (EWP), trusses and wall panels and other exterior products. It provides solution-based services to its customers, including design, product specification and installation management services. It serves a range of customer base, including homebuilders and custom homebuilders. Its operating regions include the South and West regions of the United States.