EX-4.7



 Exhibit 4.7 

FIFTH SUPPLEMENTAL INDENTURE 

FIFTH SUPPLEMENTAL INDENTURE, (this “Supplemental Indenture”) dated as of July 9, 2014, by and among the party signatory
hereto as Guarantor (the “Guaranteeing Subsidiary”), Trinseo Materials Operating S.C.A., a company (société en commandite par actions) organized and existing under the laws of the Grand Duchy of Luxembourg and
registered with the Luxembourg Trade and Companies Register under number B 153586 (the “Company”), Trinseo Materials Finance, Inc., a Delaware corporation (“Trinseo Finance” and, together with the Company, the
“Issuers”), the other Guarantors (as defined in the Indenture referred to herein) and Wilmington Trust, National Association, as Trustee under the Indenture referred to below. 

W I T N E S S E T H: 

WHEREAS, each of the Issuers, the Guarantors and the Trustee have heretofore executed and delivered an indenture dated as of January 29,
2013 (as amended, supplemented, waived or otherwise modified, the “Indenture”), providing for the issuance of an aggregate principal amount of $1,325.0 million of 8.750% Senior Secured Notes due 2019 of the Issuers (the
“Notes”); 
 WHEREAS, the Indenture provides that under certain circumstances parties may execute and deliver to the
Trustee a supplemental indenture to which they shall unconditionally guarantee, on a joint and several basis with the other Guarantors, all of the Issuers’ Obligations under the Notes and the Indenture on the terms and conditions set forth
herein and under the Indenture (the “Guarantee”); and 
 WHEREAS, pursuant to Section 9.1 of the Indenture, the
Issuers, any Guarantor 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, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged,
the Guaranteeing Subsidiary, the Issuers, the other Guarantors and the Trustee mutually covenant and agree for the equal and ratable benefit of the Holders of the Notes as follows: 

ARTICLE I 
 DEFINITIONS 

SECTION 1.1. Defined Terms. As used in this Supplemental Indenture, terms defined in the Indenture or in the preamble or recitals
hereto are used herein as therein defined. The words “herein,” “hereof” and “hereby” and other words of similar import used in this Supplemental Indenture refer to this Supplemental Indenture as a whole and not to any
particular section hereof. 
 ARTICLE II 

AGREEMENT TO BE BOUND; GUARANTEE 

SECTION 2.1. Agreement to Be Bound. Subject to Section 2.3, the Guaranteeing Subsidiary hereby becomes a party to the
Indenture as a Guarantor and as such will have all of the rights and be subject to all of the obligations and agreements of a Guarantor under the Indenture. 

SECTION 2.2. Guarantee. Subject to Section 2.3, the Guaranteeing Subsidiary agrees, on a joint and several basis with all
the existing Guarantors, to fully, unconditionally and irrevocably Guarantee to each Holder of the Notes and the Trustee the Guaranteed Obligations pursuant to Article X of the Indenture on a senior basis. 

SECTION 2.3 Limitation for Irish Guarantors. The Guarantee does not apply to any liability to the extent that it would result in the
Guarantee constituting unlawful financial assistance within the meaning of, in respect of a Guarantor incorporated under the laws of Ireland, section 60 of the Companies Act 1963 of Ireland. 







 ARTICLE III 

MISCELLANEOUS 
 SECTION 3.1.
Notices. All notices and other communications to the Guarantor shall be given as provided in the Indenture to the Guarantor, at its address set forth below, with a copy to the Issuers as provided in the Indenture for notices to the Issuers.

 SECTION 3.2. Merger and Consolidation. The Guaranteeing Subsidiary shall not sell or otherwise dispose of all or substantially all
of its assets to, or consolidate with or merge with or into another Person (other than an Issuer or any Restricted Subsidiary that is a Guarantor or becomes a Guarantor concurrently with the transaction) except in accordance with
Section 4.1(f) of the Indenture. 
 SECTION 3.3. Release of Guarantee. This Guarantee shall be released in accordance
with Section 10.2 of the Indenture. 
 SECTION 3.4. Parties. Nothing expressed or mentioned herein is intended or shall
be construed to give any Person, firm or corporation, other than the Holders and the Trustee, any legal or equitable right, remedy or claim under or in respect of this Supplemental Indenture or the Indenture or any provision herein or therein
contained. 
 SECTION 3.5. Governing Law. THIS SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE
LAWS OF THE STATE OF NEW YORK. THE APPLICATION OF THE PROVISIONS SET OUT IN ARTICLES 86 TO 94-8 OF THE LUXEMBOURG LAW ON COMMERCIAL COMPANIES DATED AUGUST 10, 1915 IS EXCLUDED. 

SECTION 3.6. Severability. In case any provision in this Supplemental Indenture shall be invalid, illegal or unenforceable, the
validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby and such provision shall be ineffective only to the extent of such invalidity, illegality or unenforceability. 

SECTION 3.7. Benefits Acknowledged. The Guaranteeing Subsidiary’s Guarantee is subject to the terms and conditions set forth in
the Indenture. The Guaranteeing Subsidiary acknowledges that it will receive direct and indirect benefits from the financing arrangements contemplated by the Indenture and this Supplemental Indenture and that the guarantee and waivers made by it
pursuant to this Guarantee are knowingly made in contemplation of such benefits. 
 SECTION 3.8. Ratification of Indenture; Supplemental
Indentures Part of Indenture. Except as expressly amended hereby, the Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions 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. 

SECTION 3.9. The Trustee. The Trustee makes no representation or warranty as to the validity or sufficiency of this Supplemental
Indenture or with respect to the recitals contained herein, all of which recitals are made solely by the other parties hereto. 
 SECTION
3.10. Counterparts. The parties hereto 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. The exchange of copies of this Supplemental
Indenture and of signature pages by facsimile or PDF transmission shall constitute effective execution and delivery of this Supplemental Indenture as to the parties hereto and may be used in lieu of the original Supplemental Indenture for all
purposes. Signatures of the parties hereto transmitted by facsimile or PDF shall be deemed to be their original signatures for all purposes. 







 SECTION 3.11. Execution and Delivery. The Guaranteeing Subsidiary agrees that the
Guarantee shall remain in full force and effect notwithstanding any failure to endorse on each Note a notation of any such Guarantee. 

SECTION 3.12. Headings. The headings of the Articles and the Sections in this Supplemental Indenture are for convenience of reference
only and shall not be deemed to alter or affect the meaning or interpretation of any provisions hereof. 
 [Signature Pages Follow] 







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

	
	TRINSEO MATERIALS OPERATING S.C.A.
	Société en commandité par actions
	9A, rue Gabriel Lippmann, L-5365 Munsbach
	R.C.S. Luxembourg: B 153.586


  

			
	By:	 	/s/ John A. Feenan
		 	Name: John A. Feenan
		 	Title:    Authorized Signatory


  

			
	TRINSEO MATERIALS FINANCE, INC.
		
	By:	 	/s/ John A. Feenan
		 	Name: John A. Feenan
		 	Title:   Executive Vice President and CFO



  
 [Signature Page to
Supplemental Indenture] 








 Given the common seal of 

TRINSEO FINANCE IRELAND 
  

	
	/s/ Geraldine Lillis
	Geraldine Lillis
	Director


  

	
	/s/ Andrew Ryan
	Andrew Ryan
	Director


  
 



 

  
 [Signature Page to
Supplemental Indenture] 








 
			
	 TRINSEO S.A. 

Société anonyme
 4, rue Lou Hemmer, L-1748,
Luxembourg
 R.C.S. Luxembourg: B 153.549

	
	as a Guarantor
		
	By:	 	/s/ Aurelien Vasseur and Chistopher D. Pappas
		 	 Name: Aurelien Vasseur and Chistopher D.

Pappas

		 	Title: Director


  

			
	 STYRON LUXCO S.À R.L.

Société à responsabilité limitée

4, rue Lou Hemmer, L-1748, Luxembourg
 R.C.S. Luxembourg: B
153.577
 Share Capital: USD 162,815,835.14

	
	as a Guarantor
		
	By:	 	/s/ Aurelien Vasseur
		 	 Name: Aurelien Vasseur
 Title:
Manager



  

			
	 TRINSEO MATERIALS S.À R.L. 

Société à responsabilité limitée

4, rue Lou Hemmer, L-1748, Luxembourg
 R.C.S. Luxembourg: B
162.639
 Share Capital: USD 23,517,398.72

	
	as a Guarantor
		
	By:	 	/s/ Aurelien Vasseur
		 	 Name: Aurelien Vasseur
 Title:
Manager



  

			
	 STYRON HOLDING S.À R.L.

Société à responsabilité limitée

4, rue Lou Hemmer, L-1748, Luxembourg
 R.C.S. Luxembourg: B
153.582
 Share Capital: USD 162,815,834.12

	
	as a Guarantor
		
	By:	 	/s/ Aurelien Vasseur
		 	 Name: Aurelien Vasseur
 Title:
Manager



  
  

  
 [Signature Page to
Supplemental Indenture] 








 Given the common seal of 

STYRON INVESTMENT HOLDINGS IRELAND 
  

	
	
	/s/ Geraldine Lillis
	 Geraldine Lillis
 Director



 
	
	
	/s/ Andrew Ryan
	 Andrew Ryan
 Director



  
 



 

  
 [Signature Page to
Supplemental Indenture] 








 
			
	 STYRON US HOLDING, INC.,
 as
a Guarantor

		
	By:	 	/s/ John A. Feenan
		 	 Name: John A. Feenan
 Title: Executive Vice
President and CFO



  

			
	 STYRON LLC,
 as a
Guarantor

		
	By:	 	/s/ John A. Feenan
		 	 Name: John A. Feenan
 Title: Executive Vice
President and CFO




  
 [Signature Page to
Supplemental Indenture] 








 
			
	 STYRON HOLDING B.V.,
 as a
Guarantor

		
	By:	 	/s/ Frans Kempenaars
		 	 Name: Frans Kempenaars
 Title:
Director




  
 [Signature Page to
Supplemental Indenture] 








 
			
	 STYRON NETHERLANDS B.V.,
 as
a Guarantor

		
	By:	 	/s/ Frans Kempenaars
		 	 Name: Frans Kempenaars
 Title:
Director




  
 [Signature Page to
Supplemental Indenture] 








 
			
	 STYRON FINANCE LUXEMBOURG S.À R.L.

Société à responsabilité limitée

4, rue Lou Hemmer, L-1748, Luxembourg
 R.C.S. Luxembourg: B
151.012
 Share Capital: USD 25,001.-

	
	as a Guarantor
		
	By:	 	/s/ Ruth Springham
		 	 Name: Ruth Springham
 Title:
Manager



 
			
		
	By:	 	/s/ Aurelien Vasseur
		 	 Name: Aurelien Vasseur
 Title:
Manager




  
 [Signature Page to
Supplemental Indenture] 








 
			
	 STYRON DEUTSCHLAND GmbH,
 as
a Guarantor

		
	By:	 	/s/ Ralf Irmert
		 	Name: Ralf Irmert
		 	Title: Managing Director


  

			
	 STYRON DEUTSCHLAND ANLAGENGESELLSCHAFT mbH,

as a Guarantor

		
	By:	 	/s/ Hans-Heinrich Neuhaus
		 	 Name: Hans-Heinrich Neuhaus
 Title: Managing
Director




  
 [Signature Page to
Supplemental Indenture] 








 IN WITNESS WHEREOF, Styron (Hong Kong) Limited has caused this Supplemental Indenture to be duly
executed and delivered as a deed, as of the date first above written. 
  

			
	STYRON (HONG KONG) LIMITED	  	
		
	SEALED with the COMMON SEAL of	  	




	STYRON (HONG KONG) LIMITED	  
	and SIGNED BY Lee Chung Lok,	  
	  
 /s/ Lee Chung Lok
	  
	[Signature of Director]	  
	Director	  
	  
 in the presence of:
	  
	  
 /s/ Rachel Lau
	  
	[Signature of Witness]	  
		  

  

			
	 Name of Witness:
 Address of Witness:

Occupation of Witness:
	  	 Rachel Lau
 40-50 Tsing Yi Road, Tsing Yi
Island, N.T., Hong Kong
 Administrative Specialist



  
 [Signature Page to
Supplemental Indenture] 








 IN WITNESS WHEREOF, Styron (Hong Kong) Limited has caused this Supplemental Indenture to be duly
executed and delivered as a deed, as of the date first above written. 
 STYRON (HONG KONG) LIMITED 

 

			
	 SEALED with the COMMON SEAL of
 STYRON (HONG
KONG) LIMITED
 and SIGNED BY Lin Zhiqiang,
	  	 





	 /s/ Lin Zhiqiang
	  
	[Signature of Director]	  	
	Director	  	
		
	  
 in the presence of:
	  	

  

			
	 /s/ Isabel Hacker
	  	
	[Signature of Witness]	  	

  

			
	 Name of Witness:
 Address of Witness:

Occupation of Witness:
	  	 Dr. Isabel Hacker
 Styron Europe GmbH, Horgen,
Switzerland
 Associate General Counsel - Europe



  
 [Signature Page to
Supplemental Indenture] 








 Given the common seal of 

STYRON MATERIALS IRELAND 
  

	
	/s/ Geraldine Lillis
	Geraldine Lillis
	Director


  

	
	/s/ Andrew Ryan
	Andrew Ryan
	Director


  
 



 

  
 [Signature Page to
Supplemental Indenture] 








 
					
	 STYRON BELGIUM BVBA,
 as a
Guarantor

		
	By: 	 	/s/ Rudolf Van Domburg
		 	Name:	 	Rudolf Van Domburg
		 	Title:	 	Director



  
 [Signature Page to
Supplemental Indenture] 








 
					
	 STYRON UK LIMITED,
 as a
Guarantor

		
	By: 	 	/s/ Stephen Wilkes
		 	Name:	 	Stephen Wilkes
		 	Title:	 	Director



  
 [Signature Page to
Supplemental Indenture] 









							
	 Executed by Styron Australia Pty Ltd in

accordance with section 127 of the
 Corporations Act 2001
(Cth):
	  		  		  	
				
	/s/ Mark Stewart Tucker	  		  	 /s/ Tim Thomas
	  	
	Signature of director	  		  	Signature of director	  	
				
	Mark Stewart Tucker	  		  	 Tim Thomas
	  	
	Full name of director	  		  	Full name of director	  	


  
 [Signature Page to
Supplemental Indenture] 








 
					
	 STYRON CANADA ULC,
 as a
Guarantor

		
	By:	 	/s/ David Stasse
		 	Name:	 	David Stasse
		 	Title:	 	Treasurer



  
 [Signature Page to
Supplemental Indenture] 









					
		 		  	




		 		  
	The COMMON SEAL of	 	)	  
	STYRON HOLDINGS ASIA PTE. LTD.	 	)	  
	was hereunto affixed in accordance with its	 	)	  
	Articles of Association:	 	)	  
		 		  
		 		  
		 		  
		 		  
		 		  

  

	
	/s/ Cai Dongyu
	Cai Dongyu
	Director

  

	
	




	Secretary


  
 [Signature Page to
Supplemental Indenture] 









					
		 		 	




		 		 
		 		 
	The COMMON SEAL of                               )	 		 
	STYRON SINGAPORE PTE. LTD.           )	 		 
	was hereunto affixed in accordance with its   )	 		 
	Articles of
Association:                                   )	 		 
		 		 
		 		 
		 		 
		 		 

  

	
	/s/ Cai Dongyu
	Cai Dongyu
	Director
	
	 





	Secretary


  
 [Signature Page to
Supplemental Indenture] 








 
			
	STYRON EUROPE GmbH,
	as a Guarantor
		
	By:	 	/s/ Martin Pugh
		 	Name: Martin Pugh
		 	Title:   Manager



  
 [Signature Page to
Supplemental Indenture] 








 
			
	STYRON SVERIGE AB,
	as a Guarantor
		
	By:	 	/s/ Erkki Kesti
		 	Name: Erkki Kesti
		 	Title:   Ordinary Member



  
 [Signature Page to
Supplemental Indenture] 








 
			
	WILMINGTON TRUST, NATIONAL ASSOCIATION, as Trustee
		
	By:	 	/s/ Jane Schweiger
		 	Name: Jane Schweiger
		 	Title:   Vice President



  
 [Signature Page to
Supplemental Indenture]