X0303 4 2009-12-31 0 0000757011 USG CORP USG 0001046086 LEER STEVEN F C/O USG CORPORATION 550 WEST ADAMS STREET CHICAGO IL 60661 1 0 0 0 Deferred Stock Units 2009-12-31 4 A 0 7205.6239 14.225 A Common Stock 7205.6239 28573.0059 D Deferral of compensation for service as a director pursuant to the USG Corporation Deferred Compensation Program for Non-Employee Directors. Each deferred stock unit represents the right to receive the value of one share of common stock. The deferred stock units become payable in cash or shares of common stock, at the reporting person's option, following the reporting person's termination of service as a director. Mean of the high and low sales prices of a share of common stock December 31, 2009. /s/ Ellis A. Regenbogen, Attorney-In-Fact 2010-01-04