Document:

EX-10.4

 Exhibit 10.4 

THIRD SUPPLEMENTAL INDENTURE 

THIS THIRD SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), is
dated as of June 12, 2014, among Eclipse Resources Corporation, a Delaware corporation (“ERC”), Eclipse Resources-Ohio, LLC, a Delaware limited liability company (formerly known as Eclipse Resources-Ohio, LLC, an Ohio limited liability
company; together with ERC, the “Subsidiary Guarantors” and each, a “Subsidiary Guarantor”), Eclipse Resources I, LP, a Delaware limited partnership (the “Company”), and Deutsche Bank Trust Company Americas, as trustee
under the Indenture referred to below (the “Trustee”). 
 W I T N E S S E T H 

WHEREAS, the Company has heretofore executed and delivered to the Trustee an indenture (as supplemented and in effect on the date hereof, the
“Indenture”), dated as of June 26, 2013 providing for the issuance of 12.0% Senior Unsecured PIK Notes due 2018 (the “Securities”); 

WHEREAS, the Indenture provides that under certain circumstances each of the Subsidiary Guarantors shall execute and deliver to the Trustee a
supplemental indenture pursuant to which such Subsidiary Guarantor shall unconditionally guarantee all of the Company’s Obligations under the Securities and the Indenture on the terms and conditions set forth herein (the “Note
Guarantee”); and 
 WHEREAS, pursuant to Section 8.01 of the Indenture, the Trustee is authorized to execute and deliver this
Supplemental Indenture. 
 NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of
which is hereby acknowledged, each Subsidiary Guarantor 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 Indenture. 
 2. AGREEMENT TO GUARANTEE. Each Subsidiary Guarantor hereby agrees to
provide an unconditional Guarantee on the terms and subject to the conditions set forth in the Note Guarantee and in the Indenture including but not limited to Article 9 thereof. 

4. NO RECOURSE AGAINST OTHERS. No director, officer, employee, member, partner,
incorporator or stockholder of the General Partner, the Company or any of their respective Subsidiaries, as such, will have any liability for any obligations of the Company or the Subsidiary Guarantors under the Securities, this Indenture, the Note
Guarantees or for any claim based on, in respect of, or by reason of, such obligations or their creation or the transactions contemplated hereby. Each holder of Securities by accepting a Security waives and releases all such liability. The waiver
and release are part of the consideration for issuance of the Securities. The waiver may not be effective to waive liabilities under the federal securities laws. 

5. NEW YORK LAW TO GOVERN; WAIVER OF JURY TRIAL. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH THE LAWS
OF THE STATE OF NEW YORK. EACH OF THE COMPANY AND THE SUBSIDIARY GUARANTORS HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS
SUPPLEMENTAL INDENTURE OR THE TRANSACTIONS CONTEMPLATED HEREBY. 

 6. COUNTERPARTS. The parties may sign any number of copies of this Supplemental
Indenture. Each signed copy (which may be provided via facsimile or other electronic transmission) shall be an original, but all of them together represent the same agreement. 

7. EFFECT OF HEADINGS. The Section headings herein are for convenience only and shall not affect
the construction hereof. 
 8. THE TRUSTEE. The Trustee shall not be responsible in any manner whatsoever for
or in respect of the validity or sufficiency of this Supplemental Indenture or for or in respect of the recitals contained herein, all of which recitals are made solely by the Subsidiary Guarantors and the Company. 

[Signature Page Follows] 

  
 - 2 - 

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

			
	ECLIPSE RESOURCES CORPORATION
		
	By:		 /s/ Matthew R. DeNezza

			Name: Matthew R. DeNezza
			Title: Executive Vice President and Chief Financial Officer
	
	ECLIPSE RESOURCES-OHIO, LLC
		
	By:		 /s/ Matthew R. DeNezza

			Name: Matthew R. DeNezza
			Title: Executive Vice President and Chief Financial Officer
	
	ECLIPSE RESOURCES I, LP
		
	By:		 /s/ Matthew R. DeNezza

			Name: Matthew R. DeNezza
			Title: Executive Vice President and Chief Financial Officer
	
	DEUTSCHE BANK TRUST COMPANY AMERICAS, as Trustee
	
	By: Deutsche Bank National Trust Company
		
	By:		 /s/ Irina Golovashchuk

			Name: Irina Golovashchuk
			Title: Vice President
		
	By:		 /s/ Jeffrey Schoenfeld

			Name: Jeffrey Schoenfeld
			Title: Assistant Vice President

 Signature Page to 

Third Supplemental IndentureEX-10.5

 Exhibit 10.5 

Execution Version 
 FOURTH
SUPPLEMENTAL INDENTURE 
 THIS FOURTH SUPPLEMENTAL INDENTURE (this
“Supplemental Indenture”), is dated as of December     , 2014, among Eclipse Resources Operating, LLC, a Delaware limited liability company (the “Subsidiary Guarantor”), a subsidiary of Eclipse Resources I,
LP, a Delaware limited partnership (the “Company”), the Company and Deutsche Bank Trust Company Americas, as trustee under the Indenture referred to below (the “Trustee”). 

W I T N E S S E T H 
 WHEREAS,
the Company has heretofore executed and delivered to the Trustee an indenture (as supplemented and in effect on the date hereof, the “Indenture”), dated as of June 26, 2013 providing for the issuance of 12.0% Senior Unsecured PIK
Notes due 2018 (the “Securities”); 
 WHEREAS, the Indenture provides that under certain circumstances the Subsidiary Guarantor
shall execute and deliver to the Trustee a supplemental indenture pursuant to which the Subsidiary Guarantor shall unconditionally guarantee all of the Company’s Obligations under the Securities and the Indenture on the terms and conditions set
forth herein (the “Note Guarantee”); and 
 WHEREAS, pursuant to Section 8.01 of the Indenture, the Trustee is authorized to
execute and deliver this Supplemental Indenture. 
 NOW, THEREFORE, in consideration of the foregoing and for other good and valuable
consideration, the receipt of which is hereby acknowledged, the Subsidiary Guarantor 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 Indenture. 
 2. AGREEMENT TO GUARANTEE. The Subsidiary Guarantor hereby agrees to
provide an unconditional Guarantee on the terms and subject to the conditions set forth in the Note Guarantee and in the Indenture including but not limited to Article 9 thereof. 

4. NO RECOURSE AGAINST OTHERS. No director, officer, employee, member, partner,
incorporator or stockholder of the General Partner, the Company or any of their respective Subsidiaries, as such, will have any liability for any obligations of the Company or the Subsidiary Guarantors under the Securities, the Indenture, as
supplemented herbey, the Note Guarantees or for any claim based on, in respect of, or by reason of, such obligations or their creation or the transactions contemplated hereby. Each holder of Securities by accepting a Security waives and releases all
such liability. The waiver and release are part of the consideration for issuance of the Securities. The waiver may not be effective to waive liabilities under the federal securities laws. 

5. NEW YORK LAW TO GOVERN; WAIVER OF JURY TRIAL. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH THE LAWS
OF THE STATE OF NEW YORK. EACH OF THE COMPANY AND THE SUBSIDIARY GUARANTOR HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS
SUPPLEMENTAL INDENTURE OR THE TRANSACTIONS CONTEMPLATED HEREBY. 

 6. COUNTERPARTS. The parties may sign any number of copies of this Supplemental
Indenture. Each signed copy (which may be provided via facsimile or other electronic transmission) shall be an original, but all of them together represent the same agreement. 

7. EFFECT OF HEADINGS. The Section headings herein are for convenience only and shall not affect
the construction hereof. 
 8. THE TRUSTEE. The Trustee shall not be responsible in any manner whatsoever for
or in respect of the validity or sufficiency of this Supplemental Indenture or for or in respect of the recitals contained herein, all of which recitals are made solely by the Subsidiary Guarantor and the Company. 

[Signature Page Follows] 

  
 - 2 - 

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

							
	ECLIPSE RESOURCES OPERATING, LLC,
			
		 	By	 	ECLIPSE RESOURCES I, LP, its sole member
			
		 	By:	 	 /s/    Matthew
DeNezza        

		 		 	Name:	 	Matthew DeNezza
		 		 	Title:	 	Executive Vice President and Chief Financial Officer

  

					
	ECLIPSE RESOURCES I, LP
		
	By:	 	 /s/    Matthew
DeNezza        

		 	Name:	 	Matthew DeNezza
		 	Title:	 	Executive Vice President and Chief Financial Officer
	
	DEUTSCHE BANK TRUST COMPANY AMERICAS, as Trustee
		
	By:	 	Deutsche Bank National Trust Company
		
	By:	 	 /s/    Irina
Golovashchuk        

		 	Name:	 	Irina Golovashchuk
		 	Title:	 	Vice President
		
	By:	 	 /s/    Jeffrey
Schoenfeld        

		 	Name:	 	Jeffrey Schoenfeld
		 	Title:	 	Assistant Vice President

 Fourth Supplemental IndentureEX-10.6

 Exhibit 10.6 

FIFTH SUPPLEMENTAL INDENTURE 

THIS FIFTH SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), is
dated as of January 15, 2015, among Eclipse GP, LLC, a Delaware limited liability company (“Eclipse GP”), Eclipse Resources Midstream, LP, a Delaware limited partnership (“Eclipse Midstream”), Eclipse Resources Marketing,
LP, a Delaware limited partnership (together with Eclipse GP and Eclipse Midstream, the “Guarantors” and each, individually, a “Guarantor”), Eclipse Resources I, LP, a Delaware limited partnership (the “Company”), and
Deutsche Bank Trust Company Americas, as trustee under the Indenture referred to below (the “Trustee”). 
 W I T N E S S E T H 

WHEREAS, the Company has heretofore executed and delivered to the Trustee an indenture (as supplemented and in effect on the date hereof, the
“Indenture”), dated as of June 26, 2013 providing for the issuance of 12.0% Senior Unsecured PIK Notes due 2018 (the “Securities”); 

WHEREAS, the Indenture provides that under certain circumstances each of the Guarantors shall execute and deliver to the Trustee a
supplemental indenture pursuant to which such Guarantor shall unconditionally guarantee all of the Company’s Obligations under the Securities and the Indenture on the terms and conditions set forth herein (the “Note Guarantee”); and

 WHEREAS, pursuant to Section 8.01 of the Indenture, the Trustee is authorized to execute and deliver this Supplemental Indenture.

 NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby
acknowledged, each Guarantor 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 Indenture. 
 2. AGREEMENT TO GUARANTEE. Each Guarantor hereby agrees to provide an
unconditional Guarantee on the terms and subject to the conditions set forth in the Note Guarantee and in the Indenture, including but not limited to Article 9 thereof, and to be a Subsidiary Guarantor thereunder. 

4. NO RECOURSE AGAINST OTHERS. No director, officer, employee, member, partner,
incorporator or stockholder of the General Partner, the Company or any of their respective Subsidiaries, as such, will have any liability for any obligations of the Company or any Guarantor under the Securities, this Indenture, the Note Guarantees
or for any claim based on, in respect of, or by reason of, such obligations or their creation or the transactions contemplated hereby. Each holder of Securities by accepting a Security waives and releases all such liability. The waiver and release
are part of the consideration for issuance of the Securities. The waiver may not be effective to waive liabilities under the federal securities laws. 

5. NEW YORK LAW TO GOVERN; WAIVER OF JURY TRIAL. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH THE LAWS
OF THE STATE OF NEW YORK. EACH OF THE COMPANY AND EACH GUARANTOR HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS SUPPLEMENTAL
INDENTURE OR THE TRANSACTIONS CONTEMPLATED HEREBY. 

 6. COUNTERPARTS. The parties may sign any number of copies of this Supplemental
Indenture. Each signed copy (which may be provided via facsimile or other electronic transmission) shall be an original, but all of them together represent the same agreement. 

7. EFFECT OF HEADINGS. The Section headings herein are for convenience only and shall not affect
the construction hereof. 
 8. THE TRUSTEE. The Trustee shall not be responsible in any manner whatsoever for
or in respect of the validity or sufficiency of this Supplemental Indenture or for or in respect of the recitals contained herein, all of which recitals are made solely by the Guarantors and the Company. 

[Signature Page Follows] 

  
 - 2 - 

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

					
	ECLIPSE GP, LLC
		
	By:	 	 /s/    Matthew
DeNezza        

		 	Name:	 	Matthew DeNezza
		 	Title:	 	Executive Vice President and
		 		 	Chief Financial Officer
	
	ECLIPSE RESOURCES MIDSTREAM, LP
		
	By:	 	 /s/    Matthew
DeNezza        

		 	Name:	 	Matthew DeNezza
		 	Title:	 	Executive Vice President and
		 		 	Chief Financial Officer
	
	ECLIPSE RESOURCES MARKETING, LP
		
	By:	 	 /s/    Matthew
DeNezza        

		 	Name:	 	Matthew DeNezza
		 	Title:	 	Executive Vice President and
		 		 	Chief Financial Officer
	
	ECLIPSE RESOURCES I, LP
		
	By:	 	 /s/    Matthew
DeNezza        

		 	Name:	 	Matthew DeNezza
		 	Title:	 	Executive Vice President and
		 		 	Chief Financial Officer
	
	DEUTSCHE BANK TRUST COMPANY AMERICAS, as Trustee
		
	By:	 	Deutsche Bank National Trust Company
		
	By:	 	 /s/    Irina
Golovashchuk        

		 	Name:	 	Irina Golovashchuk
		 	Title:	 	Vice President
		
	By:	 	 /s/    Jeffrey
Schoenfeld        

		 	Name:	 	Jeffrey Schoenfeld
		 	Title:	 	Assistant Vice President

 Signature Page to 

Fifth Supplemental Indenture

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