Document:

EX-4.11

 EXHIBIT 4.11 
 GUARANTY AGREEMENT 
 GUARANTY AGREEMENT (this “Guaranty
Agreement”) dated as of December 12, 2011, among USG Interiors, LLC, a Delaware limited liability company (the “New Guarantor”), a subsidiary of USG Corporation (or its successor), a Delaware corporation (the
“Company”), L & W Supply Corporation, a Delaware corporation (“L&W”), United States Gypsum Company, a Delaware corporation (“USGC”), USG Foreign Investments, Ltd., a Delaware corporation (“USGFI”), USG
Interiors, Inc., a Delaware corporation (“USGI” and together with L&W, USGC and USGFI, the “Existing Guarantors”), and U.S. Bank National Association, as successor trustee under the supplemental indenture referred to below
(the “Trustee”). 
 WITNESSETH: 
 WHEREAS the Company and the Existing Guarantors have heretofore executed and delivered to the Trustee a supplemental indenture (the “Supplemental Indenture”) dated as of August 4, 2009,
providing for the issuance of an aggregate principal amount of up to $300,000,000 of 9.75% Senior Notes due 2014 (the “Securities”); and 
 WHEREAS Section 3.09 of the Supplemental Indenture provides that under certain circumstances the Company is required to cause the New Guarantor to execute and deliver to the Trustee a guaranty
agreement pursuant to which the New Guarantor shall unconditionally guarantee all of the Company’s obligations under the Securities pursuant to a Subsidiary Guaranty on the terms and conditions set forth herein; 

NOW THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby
acknowledged, the New Guarantor, the Company, the Existing Guarantors and the Trustee mutually covenant and agree for the equal and ratable benefit of the holders of the Securities as follows: 

1. Agreement to Guarantee. The New Guarantor hereby agrees, jointly and severally with all the Existing Guarantors, to
unconditionally guarantee the Company’s obligations under the Securities on the terms and subject to the conditions set forth in Article Three of the Supplemental Indenture and to be bound by all other applicable provisions of the Supplemental
Indenture and the Securities. 
 2. Governing Law. THIS GUARANTY AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO THE CHOICE OF LAW PRINCIPLES THEREOF. 
 3. Trustee Makes
No Representation. The Trustee makes no representations as to the validity or sufficiency of this Guaranty Agreement. 

  
 1 

 4. Counterparts. The parties may sign any number of copies of this Guaranty
Agreement. Each signed copy shall be an original, but all of them together represent the same agreement. 
 5. Effect of
Headings. The section headings herein are for convenience only and shall not effect the construction thereof. 
 (Signature
Page Follows) 

  
 2 

 IN WITNESS WHEREOF, the parties hereto have caused this Guaranty Agreement to be duly
executed as of the date first above written. 
  

					
	USG INTERIORS, LLC,
			
	by	 		 	
		 	 /s/ Karen L. Leets

		 	Name: Karen L. Leets
		 	Title: Vice President and Treasurer
	
	USG CORPORATION,
			
	by	 		 	
		 	 /s/ Karen L. Leets

		 	Name: Karen L. Leets
		 	Title: Vice President and Treasurer
	
	L & W SUPPLY CORPORATION
			
	by	 		 	
		 	 /s/ Karen L. Leets

		 	Name: Karen L. Leets
		 	Title: Vice President and Treasurer
	
	UNITED STATES GYPSUM COMPANY
			
	 by
	 		 	
		 	 /s/ Karen L. Leets

		 	Name: Karen L. Leets
		 	Title: Vice President and Treasurer

  
 3 

					
	USG FOREIGN INVESTMENTS, LTD.
			
	by	 		 	
		 	 /s/ Karen L. Leets

		 	Name: Karen L. Leets
		 	Title: Vice President and Treasurer
	
	USG INTERIORS, INC.
			
	 by
	 		 	
		 	 /s/ Karen L. Leets

		 	Name: Karen L. Leets
		 	Title: Vice President and Treasurer
	
	U.S. BANK NATIONAL ASSOCIATION, as Trustee,
			
	by	 		 	
		 	 /s/ Margaret Drelicharz

		 	Name: Margaret Drelicharz
		 	Title: Vice President

  
 4EX-4.13

 EXHIBIT 4.13 
 GUARANTY AGREEMENT 
 GUARANTY AGREEMENT (this “Guaranty
Agreement”) dated as of December 12, 2011, among USG Interiors, LLC, a Delaware limited liability company (the “New Guarantor”), a subsidiary of USG Corporation (or its successor), a Delaware corporation (the
“Company”), L & W Supply Corporation, a Delaware corporation (“L&W”), United States Gypsum Company, a Delaware corporation (“USGC”), USG Foreign Investments, Ltd., a Delaware corporation (“USGFI”), USG
Interiors, Inc., a Delaware corporation (“USGI” and together with L&W, USGC and USGFI, the “Existing Guarantors”), and U.S. Bank National Association, as successor trustee under the supplemental indenture referred to below
(the “Trustee”). 
 WITNESSETH: 
 WHEREAS the Company and the Existing Guarantors have heretofore executed and delivered to the Trustee a supplemental indenture (the “Supplemental Indenture”) dated as of November 9, 2010,
providing for the issuance of an aggregate principal amount of up to $350,000,000 of 8.375% Senior Notes due 2018 (the “Securities”); and 
 WHEREAS Section 3.09 of the Supplemental Indenture provides that under certain circumstances the Company is required to cause the New Guarantor to execute and deliver to the Trustee a guaranty
agreement pursuant to which the New Guarantor shall unconditionally guarantee all of the Company’s obligations under the Securities pursuant to a Subsidiary Guaranty on the terms and conditions set forth herein; 

NOW THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby
acknowledged, the New Guarantor, the Company, the Existing Guarantors and the Trustee mutually covenant and agree for the equal and ratable benefit of the holders of the Securities as follows: 

1. Agreement to Guarantee. The New Guarantor hereby agrees, jointly and severally with all the Existing Guarantors, to
unconditionally guarantee the Company’s obligations under the Securities on the terms and subject to the conditions set forth in Article Three of the Supplemental Indenture and to be bound by all other applicable provisions of the Supplemental
Indenture and the Securities. 
 2. Governing Law. THIS GUARANTY AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO THE CHOICE OF LAW PRINCIPLES THEREOF. 
 3. Trustee Makes
No Representation. The Trustee makes no representations as to the validity or sufficiency of this Guaranty Agreement. 

  
 1 

 4. Counterparts. The parties may sign any number of copies of this Guaranty
Agreement. Each signed copy shall be an original, but all of them together represent the same agreement. 
 5. Effect of
Headings. The section headings herein are for convenience only and shall not effect the construction thereof. 
 (Signature
Page Follows) 

  
 2 

 IN WITNESS WHEREOF, the parties hereto have caused this Guaranty Agreement to be duly
executed as of the date first above written. 
  

					
	USG INTERIORS, LLC,
			
	by	 		 	
		 	 /s/ Karen L. Leets

		 	Name: Karen L. Leets
		 	Title: Vice President and Treasurer
	
	USG CORPORATION,
			
	 by
	 		 	
		 	 /s/ Karen L. Leets

		 	Name: Karen L. Leets
		 	Title: Vice President and Treasurer
	
	L & W SUPPLY CORPORATION
			
	 by
	 		 	
		 	 /s/ Karen L. Leets

		 	Name: Karen L. Leets
		 	Title: Vice President and Treasurer
	
	UNITED STATES GYPSUM COMPANY
			
	 by
	 		 	
		 	 /s/ Karen L. Leets

		 	Name: Karen L. Leets
		 	Title: Vice President and Treasurer

  
 3 

					
	USG FOREIGN INVESTMENTS, LTD.
			
	by	 		 	
		 	 /s/ Karen L. Leets

		 	Name: Karen L. Leets
		 	Title: Vice President and Treasurer
	
	USG INTERIORS, INC.
			
	 by
	 		 	
		 	 /s/ Karen L. Leets

		 	Name: Karen L. Leets
		 	Title: Vice President and Treasurer
	
	U.S. BANK NATIONAL ASSOCIATION, as Trustee,
			
	 by
	 		 	
		 	 /s/ Margaret Drelicharz

		 	Name: Margaret Drelicharz
		 	Title: Vice President

  
 4EX-10.11

 EXHIBIT 10.11 
 Amendment No. 2 to 
 USG Corporation 

Non-Employee Director 
 Compensation Program 
 (As Amended and Restated February 13, 2008 

and amended November 12, 2010) 
 Section 2 of the USG Corporation Non-Employee Director Program (As Amended and Restated February 13, 2008 and amended November 12, 2010) is amended to read in its entirety as follows:

  

	 	1.	An additional cash retainer of $10,000 per year for the chairs of Board committees, payable in equal quarterly installments on the last business day of each calendar
quarter, and an additional cash retainer of $15,000 per year for the Board’s Lead Director, payable in equal quarterly installments on the last business day of each calendar quarter commencing with the first quarter of 2012.

 November 10, 2011EX-10.16

 EXHIBIT 10.16 
 SUPPLEMENT dated as of November 21, 2011 (this “Supplement”), to the Guarantee Agreement dated as of January 7, 2009 (as amended, supplemented or otherwise modified from time to
time, the “Guarantee Agreement”), among USG CORPORATION, a Delaware corporation (the “Borrower”), the Subsidiaries of the Borrower from time to time party thereto (together with the Borrower, the
“Guarantors”) and JPMORGAN CHASE BANK, N.A., as Administrative Agent (in such capacity, the “Administrative Agent”). 
 A. Reference is made to the Third Amended and Restated Credit Agreement dated as of December 21, 2010 (as amended, restated, supplemented or otherwise modified from time to time, the “Credit
Agreement”), among the Borrower, the lenders from time to time party thereto, the Administrative Agent, and Bank of America, N.A. and Wells Fargo Bank, N.A., as Co-Syndication Agents. 

B. Capitalized terms used herein and not otherwise defined herein shall have the meanings assigned to such terms in the Credit Agreement
and the Guarantee Agreement referred to therein. 
 C. The Guarantors have entered into the Guarantee Agreement in order to
induce the Lenders to make Loans and the Issuing Bank to issue Letters of Credit. Section 4.14 of the Guarantee Agreement provides that additional Subsidiaries may become Guarantors under the Guarantee Agreement by execution and delivery of an
instrument in the form of this Supplement. The undersigned Subsidiary (the “New Subsidiary”) is executing this Supplement in accordance with the requirements of the Credit Agreement to become a Guarantor under the Guarantee
Agreement in order to induce the Lenders to make additional Loans and the Issuing Bank to issue additional Letters of Credit and as consideration for Loans previously made and Letters of Credit previously issued. 

Accordingly, the Administrative Agent and the New Subsidiary agree as follows: 

SECTION 1. In accordance with Section 4.14 of the Guarantee Agreement, the New Subsidiary by its signature below becomes a Guarantor
under the Guarantee Agreement with the same force and effect as if originally named therein as a Guarantor and the New Subsidiary hereby (a) agrees to all the terms and provisions of the Guarantee Agreement applicable to it as a Guarantor
thereunder and (b) represents and warrants that the representations and warranties made by it as a Guarantor thereunder are true and correct on and as of the date hereof. Each reference to a “Guarantor” in the Guarantee Agreement
shall be deemed to include the New Subsidiary. The Guarantee Agreement is hereby incorporated herein by reference. 
 SECTION 2.
The New Subsidiary represents and warrants to the Administrative Agent and the other Guaranteed Parties that this Supplement has been duly authorized, executed and delivered by it and constitutes its legal, valid and binding obligation, enforceable
against it in accordance with its terms. 

 SECTION 3. This Supplement may be executed in counterparts (and by different parties hereto
on different counterparts), each of which shall constitute an original, but all of which when taken together shall constitute a single contract. This Supplement shall become effective when the Administrative Agent shall have received a counterpart
of this Supplement that bears the signature of the New Subsidiary and the Administrative Agent has executed a counterpart hereof. Delivery of an executed signature page to this Supplement by facsimile or other electronic transmission shall be as
effective as delivery of a manually signed counterpart of this Supplement. 
 SECTION 4. Except as expressly supplemented
hereby, the Guarantee Agreement shall remain in full force and effect. 
 SECTION 5. THIS SUPPLEMENT SHALL BE GOVERNED BY,
AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK. 
 SECTION 6. In case any one or more of the
provisions contained in this Supplement should be held invalid, illegal or unenforceable in any respect, the validity, legality and enforceability of the remaining provisions contained herein and in the Guarantee Agreement shall not in any way be
affected or impaired thereby (it being understood that the invalidity of a particular provision in a particular jurisdiction shall not in and of itself affect the validity of such provision in any other jurisdiction). The parties hereto shall
endeavor in good-faith negotiations to replace the invalid, illegal or unenforceable provisions with valid provisions the economic effect of which comes as close as possible to that of the invalid, illegal or unenforceable provisions. 

SECTION 7. All communications and notices hereunder shall be in writing and given as provided in Section 4.01 of the Guarantee
Agreement. 
 SECTION 8. The New Subsidiary agrees to reimburse the Administrative Agent for its reasonable out-of-pocket
expenses in connection with this Supplement, including the reasonable fees, other charges and disbursements of counsel for the Administrative Agent. 
 SECTION 9. The Borrower hereby designates the New Subsidiary as, and the New Subsidiary hereafter will be, a Material Subsidiary and a Restricted Collateral Party for all purposes of the Credit Agreement
and other Loan Documents. 
 [Signature Pages Follow] 

 IN WITNESS WHEREOF, the New Subsidiary and the Administrative Agent have duly executed this
Supplement to the Guarantee Agreement as of the day and year first above written. 
  

			
	USG INTERIORS, LLC,
		
	      by	 	
		 	 /s/ Karen L. Leets

		 	Name: Karen L. Leets
		 	Title: Vice President and Treasurer

  

			
	 JPMORGAN CHASE BANK, N.A., 
 as Administrative Agent,

		
	      by	 	
		 	 /s/ Peter S. Predun

		 	Name: Peter S. Predun
		 	Title: Executive Director

 Solely with respect to Section 9 hereof: 

 

			
	USG CORPORATION,
		
	  by	 	
		 	 /s/ Karen L. Leets

		 	Name: Karen L. Leets
		 	Title: Vice President and Treasurer

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