EX-4.4



 Exhibit 4.4 

ELEVENTH SUPPLEMENTAL INDENTURE 

THIS ELEVENTH SUPPLEMENTAL INDENTURE (this
“Supplemental Indenture”), dated as of January 25, 2017, is by and among (i) Concho Resources Inc., a Delaware corporation (the
“Company”), (ii) Mongoose Minerals LLC (the “New Subsidiary Guarantor”), a Delaware limited liability
company and a subsidiary of the Company, (iii) the existing Subsidiary Guarantors (as defined in the Indenture referred to herein) and (iv) Wells Fargo Bank, National Association, as trustee under the Indenture referred to herein (the
“Trustee”). The New Subsidiary Guarantor and the existing Subsidiary Guarantors are sometimes referred to collectively herein as the “Subsidiary Guarantors,” or individually as a “Subsidiary Guarantor.”

 W I T N E S S E T H 

WHEREAS, the Company and the existing Subsidiary Guarantors have heretofore executed and delivered to the Trustee an indenture, dated as of
September 18, 2009, and a Tenth Supplemental Indenture (herein so called) dated as of December 28, 2016 relating to the 4.375% Senior Notes due 2025 (the “Securities”) of the Company; 

WHEREAS, Section 1117 of the Tenth Supplemental Indenture obligates the Company to cause certain Restricted Subsidiaries to become
Subsidiary Guarantors by executing a supplemental indenture as provided in such Section; and 
 WHEREAS, pursuant to Section 1001 of
the Tenth Supplemental Indenture, the Company, the Subsidiary Guarantors and the Trustee are authorized to execute and deliver this Supplemental Indenture to amend or supplement the Indenture without the consent of any Holder; 

NOW THEREFORE, to comply with the provisions of the Tenth Supplemental Indenture and in consideration of the foregoing and for other good and
valuable consideration, the receipt of which is hereby acknowledged, the New Subsidiary Guarantor, the other Subsidiary Guarantors, the Company and the Trustee mutually covenant and agree for the equal and ratable benefit of the Holders of the
Securities as follows: 
 1. CAPITALIZED TERMS. Capitalized terms used herein without definition shall have
the meanings assigned to them in the Tenth Supplemental Indenture. 
 2. AGREEMENT TO
GUARANTEE. The New Subsidiary Guarantor hereby agrees, jointly and severally, with all other Subsidiary Guarantors, to fully and unconditionally Guarantee to each Holder and to the Trustee the Obligations, to the extent set forth in
Article Sixteen of the Tenth Supplemental Indenture and subject to the provisions thereof. The obligations of the Subsidiary Guarantors to the Holders of Securities and to the Trustee pursuant to the Subsidiary Guarantees and the Indenture are
expressly set forth in Article Sixteen of the Tenth Supplemental Indenture and reference is hereby made to such Article for the precise terms of the Subsidiary Guarantees. 

3. NEW YORK LAW TO GOVERN. THE LAWS OF THE STATE OF NEW YORK SHALL GOVERN AND BE USED TO CONSTRUE AND ENFORCE THIS SUPPLEMENTAL INDENTURE.

 4. COUNTERPARTS. The parties may sign any number of copies of this Supplemental Indenture. Each signed copy shall be an
original, but all of them together represent the same agreement. 







 This Supplemental Indenture may be executed in multiple counterparts which, when taken together, shall constitute
one instrument. 
 5. EFFECT OF HEADINGS. The Section headings herein are for convenience only
and shall not affect the construction hereof. 
 6. THE TRUSTEE. Except as otherwise expressly provided
herein, no duties, responsibilities or liabilities are assumed, or shall be construed to be assumed, by the Trustee by reason of this Supplemental Indenture. This Supplemental Indenture is executed and accepted by the Trustee subject to all the
terms and conditions set forth in the Indenture with the same force and effect as if those terms and conditions were repeated at length herein and made applicable to the Trustee with respect hereto. 

[Remainder of Page Intentionally Left Blank. Signature Page Follows.] 







 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly
executed and attested, all as of the date first above written. 
  

			
	MONGOOSE MINERALS LLC
		
	By:	 	/s/ Jack F. Harper
	Name:	 	Jack F. Harper
	Title:	 	 Executive Vice President and
 Chief Financial
Officer

	
	COG HOLDINGS LLC
	COG OPERATING LLC
	COG PRODUCTION LLC
	COG REALTY LLC
	CONCHO OIL & GAS LLC
	DELAWARE RIVER SWD LLC
	QUAIL RANCH LLC
	COG ACREAGE LP


 
			
	By:	 	 COG Production LLC,
 its General
Partner



 
			
		
	By:	 	/s/ Jack F. Harper
	Name:	 	Jack F. Harper
	Title:	 	 Executive Vice President and
 Chief Financial
Officer

	
	CONCHO RESOURCES INC.
		
	By:	 	/s/ Jack F. Harper
	Name:	 	Jack F. Harper
	Title:	 	 Executive Vice President and
 Chief Financial
Officer

	
	WELLS FARGO BANK, NATIONAL ASSOCIATION, as Trustee


 
			
		
	By:	 	 /s/ John Stohlmann

		 	Authorized Signatory


 SIGNATURE PAGE TO ELEVENTH
SUPPLEMENTAL INDENTURE