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 completed the previously announced sale of 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, subject to customary adjustments. The Company expects post-tax transaction proceeds to be used to pay down a portion of its secured credit facilities, invest in organic growth and efficiency projects and strategic acquisitions.