X0306 4 2017-12-31 0 0000757011 USG CORP USG 0001189027 HERNANDEZ WILLIAM H C/O USG CORPORATION 550 WEST ADAMS STREET CHICAGO IL 60661 1 0 0 0 Deferred Stock Units 2017-12-31 4 A 0 3101.5766 38.69 A Common Stock 3101.5766 27049.3584 D Deferral of the reporting person's compensation for service as a director pursuant to the USG Corporation Deferred Compensation Program for Non-Employee Directors (the "Program"). Each deferred stock unit represents the right to receive one share of common stock. The deferred stock units become payable in shares of common stock following termination of service as a director. Mean of the high and low sales prices of a share of common stock on December 29, 2017. Deferred stock units granted to the reporting person prior to August 30, 2017 become payable in cash or shares of common stock, at the reporting person's option, following termination of service as a director. /s/ Jonathan Dorfman, Attorney-In-Fact 2017-01-03