Exhibit 4.21

 

THIRD SUPPLEMENTAL INDENTURE 
 SUBSIDIARY GUARANTEES

 

THIRD SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), dated as of April 2, 2015, among the Subsidiary Guarantors listed on Schedule I hereto (the “Guaranteeing Subsidiaries”), each a wholly-owned domestic subsidiary of Dynegy Inc. (or its permitted successor), a Delaware corporation (the “Company”), the Company, the other Subsidiary Guarantors (as defined in the Indenture referred to herein) and Wilmington Trust, National Association, as trustee under the indentures referred to below (the “Trustee”).

 

W I T N E S S E T H

 

WHEREAS, the Company (as successor by merger to Dynegy Finance II, Inc.) has heretofore executed and delivered to the Trustee an indenture (as supplemented, the “Indenture”), dated as of October 27, 2014, between the Company and the Trustee, providing for the original issuance of an aggregate principal amount of $750,000,000 of 7.625% Senior Notes due 2024 (the “Initial Notes”) and, subject to the terms of the Indenture, future unlimited issuances of 7.625% Senior Notes due 2024 (the “Additional Notes, and together with the Initial Notes, the “Notes”);

 

WHEREAS, the Indenture provides that under certain circumstances the Guaranteeing Subsidiaries shall execute and deliver to the Trustee a supplemental indenture pursuant to which the Guaranteeing Subsidiaries shall unconditionally guarantee all of the Company’s Obligations under the Notes and the Indenture (the “Subsidiary Guarantees”); and

 

WHEREAS, pursuant to Section 4.07 of the Indenture, the Trustee, the Company and the other Subsidiary Guarantors are authorized and required to execute and deliver this Supplemental Indenture.

 

NOW THEREFORE, in consideration of the foregoing and for good and valuable consideration, the receipt of which is hereby acknowledged, the Guaranteeing Subsidiaries, the Trustee, the Company and the other Subsidiary Guarantors mutually covenant and agree for the equal and ratable benefit of the Holders of the Notes as follows:

 

1.                                      Capitalized Terms.  Unless otherwise defined in this Supplemental Indenture, capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture.

 

2.             Agreement to be Bound; Guarantee.  Each of the Guaranteeing Subsidiaries hereby become a party to the Indenture as a Subsidiary Guarantor and as such will have all of the rights and be subject to all of the Obligations and agreements of a Subsidiary Guarantor under the Indenture.  Each of the Guaranteeing Subsidiaries hereby agree to be bound by all of the provisions of the Indenture applicable to a Subsidiary Guarantor and to perform all of the Obligations and agreements of a Subsidiary Guarantor under the Indenture.  In furtherance of the foregoing, each of the Guaranteeing Subsidiaries shall be deemed a Subsidiary Guarantor for purposes of Article 10 of the Indenture, including, without limitation, Section 10.02 thereof.

 

3.             NEW YORK LAW TO GOVERN.  THE INDENTURE, THE NOTES, THIS SUPPLEMENTAL INDENTURE AND THE SUBSIDIARY GUARANTEES SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

 

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.

 

5.             Effect of Headings.  The Section headings herein are for convenience only and shall not affect the construction hereof.

 

6.             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 Guaranteeing Subsidiaries and the Company.

 

7.             Ratification of Indenture; Supplemental Indenture Part of Indenture.  Except as expressly amended hereby, the Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions

 

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thereof shall remain in full force and effect.  This Supplemental Indenture shall form a part of the Indenture for all purposes, and every Holder of Notes heretofore or hereafter authenticated and delivered shall be bound hereby.

 

[Signature Page Follows]

 

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IN WITNESS WHEREOF, we have hereunto signed our names as of the date set forth below.

 

	
Dated:
    	
April 2, 2015
    	
 
    	
 
    
	
 
    	
 
    
	
 
    	
DYNEGY INC.
    
	
 
    	
 
    
	
 
    	
By:
    	
/s/ Robert C. Flexon
    
	
 
    	
Name:
    	
Robert C. Flexon
    
	
 
    	
Title:
    	
President & Chief Executive Officer
    
	
 
    	
 
    	
 
    
	
 
    	
 
    
	
 
    	
DYNEGY ENERGY SERVICES (EAST),   LLC
    
	
 
    	
 
    
	
 
    	
By:
    	
/s/ Robert C. Flexon
    
	
 
    	
Name:
    	
Robert C. Flexon
    
	
 
    	
Title:
    	
Chief Executive Officer
    
	
 
    	
 
    
	
 
    	
DYNEGY RESOURCE I, LLC
    
	
 
    	
DYNEGY COMMERCIAL ASSET   MANAGEMENT, LLC
    
	
 
    	
DYNEGY CONESVILLE, LLC
    
	
 
    	
DYNEGY DICKS CREEK, LLC
    
	
 
    	
DYNEGY FAYETTE II, LLC
    
	
 
    	
DYNEGY HANGING ROCK II, LLC
    
	
 
    	
DYNEGY KILLEN, LLC
    
	
 
    	
DYNEGY LEE II, LLC
    
	
 
    	
DYNEGY MIAMI FORT, LLC
    
	
 
    	
DYNEGY STUART, LLC
    
	
 
    	
DYNEGY WASHINGTON II, LLC
    
	
 
    	
DYNEGY ZIMMER, LLC
    
	
 
    	
DYNEGY COAL GENERATION, LLC
    
	
 
    	
DYNEGY GAS GENERATION, LLC
    
	
 
    	
DYNEGY GENERATION HOLDCO, LLC
    
	
 
    	
 
    
	
 
    	
By:
    	
/s/ Robert C. Flexon
    
	
 
    	
Name:
    	
Robert C. Flexon
    
	
 
    	
Title:
    	
President & Chief Executive Officer
    


 

[SIGNATURE PAGES CONTINUE]

 











 

	
 
    	
SUBSIDIARY   GUARANTORS:
    
	
 
    	
 
    
	
 
    	
DYNEGY ENERGY SERVICES, LLC
    
	
 
    	
 
    
	
 
    	
By:
    	
/s/ Robert C. Flexon
    
	
 
    	
Name:
    	
Robert C. Flexon
    
	
 
    	
Title:
    	
Chief Executive Officer
    
	
 
    	
 
    
	
 
    	
BLUE RIDGE GENERATION LLC
    
	
 
    	
BLACK MOUNTAIN   COGEN, INC.
    
	
 
    	
CASCO BAY ENERGY COMPANY, LLC
    
	
 
    	
DYNEGY ADMINISTRATIVE   SERVICES COMPANY
    
	
 
    	
DYNEGY COAL HOLDCO, LLC
    
	
 
    	
DYNEGY COAL INVESTMENTS   HOLDINGS, LLC
    
	
 
    	
DYNEGY COAL TRADING & TRANSPORTATION, L.L.C.
    
	
 
    	
DYNEGY EQUIPMENT, LLC
    
	
 
    	
DYNEGY GASCO HOLDINGS, LLC
    
	
 
    	
DYNEGY GAS HOLDCO, LLC
    
	
 
    	
DYNEGY GAS IMPORTS, LLC
    
	
 
    	
DYNEGY GAS INVESTMENTS, LLC
    
	
 
    	
DYNEGY GAS INVESTMENTS   HOLDINGS, LLC
    
	
 
    	
DYNEGY GLOBAL   LIQUIDS, INC.
    
	
 
    	
DYNEGY KENDALL ENERGY, LLC
    
	
 
    	
DYNEGY MARKETING AND TRADE,   LLC
    
	
 
    	
DYNEGY MIDWEST GENERATION,   LLC
    
	
 
    	
DYNEGY MORRO BAY, LLC
    
	
 
    	
DYNEGY MOSS LANDING, LLC
    
	
 
    	
DYNEGY OAKLAND, LLC
    
	
 
    	
DYNEGY OPERATING COMPANY
    
	
 
    	
DYNEGY POWER, LLC
    
	
 
    	
DYNEGY POWER GENERATION INC.
    
	
 
    	
DYNEGY POWER MARKETING, LLC
    
	
 
    	
DYNEGY SOUTH BAY, LLC
    
	
 
    	
HAVANA DOCK ENTERPRISES, LLC
    
	
 
    	
ILLINOVA CORPORATION
    
	
 
    	
ONTELAUNEE POWER OPERATING   COMPANY, LLC
    
	
 
    	
SITHE ENERGIES, INC.
    
	
 
    	
SITHE/INDEPENDENCE LLC
    
	
 
    	
 
    
	
 
    	
By:
    	
/s/ Robert C. Flexon
    
	
 
    	
Name:
    	
Robert C. Flexon
    
	
 
    	
Title:
    	
President & Chief Executive Officer
    


 

[SIGNATURE PAGES CONTINUE]

 











 

	
 
    	
EQUIPOWER RESOURCES CORP.
    
	
 
    	
DYNEGY RESOURCE II, LLC
    
	
 
    	
DYNEGY RESOURCE III, LLC
    
	
 
    	
DYNEGY RESOURCES HOLDCO I,   LLC
    
	
 
    	
DYNEGY RESOURCES HOLDCO II,   LLC
    
	
 
    	
DYNEGY RESOURCES GENERATING   HOLDCO, LLC
    
	
 
    	
RICHLAND GENERATION EXPANSION   LLC
    
	
 
    	
MILFORD POWER COMPANY, LLC
    
	
 
    	
LAKE ROAD HOLDINGS GP, LLC
    
	
 
    	
LAKE ROAD HOLDINGS LP, LLC
    
	
 
    	
LAKE ROAD GENERATING COMPANY,   L.P.
    
	
 
    	
RSG POWER, LLC
    
	
 
    	
RICHLAND-STRYKER GENERATION,   LLC
    
	
 
    	
DYNEGY RESOURCES MANAGEMENT,   LLC
    
	
 
    	
DIGHTON POWER, LLC
    
	
 
    	
MASSPOWER HOLDCO, LLC
    
	
 
    	
MASSPOWER PARTNERS I, LLC
    
	
 
    	
MASSPOWER PARTNERS II, LLC
    
	
 
    	
MASSPOWER
    
	
 
    	
LIBERTY ELECTRIC GENERATION   HOLDINGS, LLC
    
	
 
    	
LEP HOLDINGS, LLC
    
	
 
    	
LIBERTY ELECTRIC PA 2, LLC
    
	
 
    	
LIBERTY ELECTRIC POWER, LLC
    
	
 
    	
TOMCAT POWER, LLC
    
	
 
    	
KINCAID HOLDINGS, LLC
    
	
 
    	
KINCAID GENERATION, L.L.C.
    
	
 
    	
KINCAID ENERGY SERVICES   COMPANY, LLC
    
	
 
    	
ELWOOD EXPANSION HOLDINGS,   LLC
    
	
 
    	
ELWOOD ENERGY HOLDINGS, LLC
    
	
 
    	
ELWOOD ENERGY LLC
    
	
 
    	
ELWOOD SERVICES COMPANY, LLC
    
	
 
    	
ELWOOD ENERGY HOLDINGS II,   LLC
    
	
 
    	
BRAYTON POINT HOLDINGS, LLC
    
	
 
    	
ECP II-B (BRAYTON POINT IP)   CORP
    
	
 
    	
ECP II-C (BRAYTON POINT IP)   CORP
    
	
 
    	
 
    
	
 
    	
By:
    	
/s/ Robert C. Flexon
    
	
 
    	
Name:
    	
Robert C. Flexon
    
	
 
    	
Title:
    	
President & Chief Executive Officer
    


 

[SIGNATURE PAGES CONTINUE]

 











 

	
 
    	
WILMINGTON TRUST, NATIONAL   ASSOCIATION,
    
	
 
    	
as Trustee
    
	
 
    	
 
    
	
 
    	
 
    
	
 
    	
By:
    	
/s/ Boris Treyger
    
	
 
    	
Name:
    	
Boris Treyger
    
	
 
    	
Title:
    	
Vice President
    


 











 

SCHEDULE I

 

SUBSIDIARY GUARANTORS

 

DYNEGY ENERGY SERVICES (EAST), LLC

DYNEGY RESOURCE I, LLC

DYNEGY COMMERCIAL ASSET MANAGEMENT, LLC

DYNEGY CONESVILLE, LLC

DYNEGY DICKS CREEK, LLC

DYNEGY FAYETTE II, LLC

DYNEGY HANGING ROCK II, LLC

DYNEGY KILLEN, LLC

DYNEGY LEE II, LLC

DYNEGY MIAMI FORT, LLC

DYNEGY STUART, LLC

DYNEGY WASHINGTON II, LLC

DYNEGY ZIMMER, LLC

DYNEGY COAL GENERATION, LLC

DYNEGY GAS GENERATION, LLC

DYNEGY GENERATION HOLDCO, LLC