Cornerstone (NCI/Atrium)

Cornerstone Building Brands (“Cornerstone”) is one of the largest providers of external building products in North America. Cornerstone was formed in 2018 through the merger between NCI Building Systems (NYSE: NCS) and Ply Gem. Cornerstone manufactures vinyl windows, vinyl siding, and a variety of metal roofing, siding and paneling systems for residential and commercial applications across new construction and repair and replacement end-markets.