The annual meeting of USG Corporation stockholders will be held on May 10, 2006 at 9:00 am at their offices in Chicago, Illinois. Stockholders will receive notice of the meeting and proxy materials by March 31, 2006. Financial and other company information can be found on their website at www.usg.com, including SEC filings and annual reports. USG Corporation common stock is listed on the New York and Chicago stock exchanges under the symbol USG.

1. Shareholder Information
General Of fices
A nnual Meeting of Stockholder s
Mailing Address:
The 2006 annual meeting of stockholders
P.O. box 6721
of USG Corporation will be held at 9 :00 am,
Chicago, Illinois 60680-6721
Wednesday, may 10, in the third floor
business library of USG Corporation,
Street Address:
125 South Franklin Street, Chicago.
125 South Franklin Street
Chicago, Illinois 60606-4678
A formal notice of the meeting and proxy
material will be sent to stockholders on or
Telephone:
about march 31, 2006.
312.606.4000
Available Information
Stock Transfer Agent
Financial and other information about the
and Registrar
Corporation can be accessed at its Web site:
Computershare Investor Services llC
www.usg.com. The Corporation has made
2 north laSalle Street
available at its Web site, throughout the period
mezzanine level
covered by this report, its annual report on
Chicago, Illinois 60602
Form 10-k, quarterly reports on Form 10-Q,
877.360.5385
current reports on Form 8-k and all amend-
ments to those reports as soon as possible Stock Listings
after such material is electronically filed with USG Corporation common stock is listed on
or furnished to the Securities and exchange the new york and Chicago stock exchanges
Commission. If you wish to receive a paper and is traded under the symbol USG.
copy of any exhibit to the Corporation’s reports
Inquiries
filed with or furnished to the Securities and
Investment Community:
exchange Commission, such exhibit may
Investor Relations
be obtained, upon payment of reasonable
312.606.4125
expenses, by writing to: J. eric Schaal,
Corporate Secretary, USG Corporation, P.O.
News Media:
box 6721, Chicago, Illinois 60680-6721.
Corporate Communications
312.606.4356
Design: Petrick Design, Chicago
The following trademarks used herein are owned by USG Corporation or its subsidiaries:
AQUA-TOUGH, A ST RO, Cen T RICI T ee, COmPä S SO, CU RvAT U R A , DI A mOnD, DOnn, DU ROCk, DX, eClIPSe, FIbeROCk,
FInelIne, GeOme T RI X, H UmI T ek, H y DROCA l, ImPeRI A l, l e v elROCk, R A DA R, SeCU ROCk, SHee T ROCk, TOPO, T U FF-HIDe, USG.