<SEC-DOCUMENT>0001206774-18-001025-index.html : 20180329
<SEC-HEADER>0001206774-18-001025.hdr.sgml : 20180329
<ACCEPTANCE-DATETIME>20180329162901
ACCESSION NUMBER:		0001206774-18-001025
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		10
FILED AS OF DATE:		20180329
DATE AS OF CHANGE:		20180329
EFFECTIVENESS DATE:		20180329

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			USG CORP
		CENTRAL INDEX KEY:			0000757011
		STANDARD INDUSTRIAL CLASSIFICATION:	CONCRETE GYPSUM  PLASTER PRODUCTS [3270]
		IRS NUMBER:				363329400
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08864
		FILM NUMBER:		18723324

	BUSINESS ADDRESS:	
		STREET 1:		550 WEST ADAMS STREET
		STREET 2:		DEPARTMENT 188
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60661
		BUSINESS PHONE:		312-606-4000

	MAIL ADDRESS:	
		STREET 1:		DEPARTMENT #188
		STREET 2:		550 WEST ADAMS STREET
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60661
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>usg3303991-defa14a.htm
<DESCRIPTION>DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS
<TEXT>
Document 1 - file: usg3303991-defa14a.htm

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<FILENAME>usg3303991-defa14ax01.jpg
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<TEXT>
Document 2 - file: usg3303991-defa14ax01.jpg

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<FILENAME>usg3303991-defa14ax02.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: usg3303991-defa14ax02.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>usg3303991-defa14ax03.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: usg3303991-defa14ax03.jpg

</DOCUMENT>
<DOCUMENT>
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<SEQUENCE>5
<FILENAME>usg3303991-defa14ax04.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: usg3303991-defa14ax04.jpg

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<FILENAME>usg3303991-defa14ax05.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: usg3303991-defa14ax05.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>usg3303991-defa14ax06.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: usg3303991-defa14ax06.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>usg3303991-defa14ax07.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: usg3303991-defa14ax07.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>usg3303991-defa14ax08.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: usg3303991-defa14ax08.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
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<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: usg3303991-defa14ax09.jpg

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