USG Board Authorizes Negotiations With Knauf

USG Corporation (NYSE: USG) today announced that its Board of Directors has authorized management to commence negotiations with Gebr. Knauf KG (“Knauf”) regarding a potential sale of the Company. The USG Board remains committed to acting in the best interests of all shareholders and will evaluate all options to do so. USG has advised Knauf that it is prepared to agree to a customary confidentiality agreement to facilitate sharing appropriate due diligence information.

The Board believes that by entering into negotiations and exchanging certain information, Knauf should be able to identify additional sources of value in combining the businesses and will see value in excess of its most recent proposal.

There can be no assurance that the negotiation process will result in any transaction, or any assurance as to its outcome or timing. The Company has not set a timetable for completion of negotiations and does not intend to disclose developments related to the process unless and until definitive agreements are reached or negotiations are abandoned.

Important Additional Information and Where to Find It

In connection with USG’s 2018 Annual Meeting of Stockholders, USG has filed with the U.S. Securities and Exchange Commission (the “SEC”) a definitive proxy statement and other documents, including a WHITE proxy card. The Company, its directors, director nominees and certain of its officers and other employees will be considered participants in the solicitation of proxies from stockholders in respect of the 2018 Annual Meeting. Information regarding the names of the Company’s directors, director nominees, and the certain officers and other employees who are considered participants, and their respective interests in the Company by security holdings or otherwise, is set forth in USG’s definitive proxy statement, dated March 29, 2018, for its 2018 Annual Meeting of Stockholders as filed with the SEC on Schedule 14A, as well as in USG’s proxy supplement, dated April 20, 2018, as filed with the SEC. BEFORE MAKING ANY VOTING DECISION, STOCKHOLDERS ARE ENCOURAGED TO READ ALL RELEVANT DOCUMENTS FILED WITH OR FURNISHED TO THE SEC, INCLUDING THE COMPANY’S DEFINITIVE PROXY STATEMENT AND ANY SUPPLEMENTS THERETO AND ACCOMPANYING WHITE PROXY CARD. Investors and other interested parties may obtain the documents free of charge at the SEC’s website, www.sec.gov, or from USG at its website, www.usg.com, or through a request in writing sent to USG at 550 West Adams Street, Chicago, Illinois 60661-3676, attention: Corporate Secretary.

About USG Corporation

USG Corporation is an industry-leading manufacturer of building products and innovative solutions. Headquartered in Chicago, USG serves construction markets around the world through its Gypsum, Performance Materials, Ceilings, and USG Boral divisions. Its wall, ceiling, flooring, sheathing and roofing products provide the solutions that enable customers to build the outstanding spaces where people live, work and play. Its USG Boral Building Products joint venture is a leading plasterboard and ceilings producer across Asia, Australasia and the Middle East. For additional information, visit www.usg.com.