CARY, N.C.–(BUSINESS WIRE)– Cornerstone Building Brands, Inc. (NYSE: CNR) (the “Company”), the largest manufacturer of exterior building products in North America, announced today that it has entered into a definitive agreement to sell its Insulated Metal Panels (“IMP”) business to Nucor Insulated Panel Group Inc and certain of its subsidiaries (collectively, “Nucor”) in a cash transaction for $1 billion. The transaction includes products sold under the Metl-Span and CENTRIA brands and is expected to close in the second-half of 2021, subject to regulatory approval and other customary closing conditions.