UNITED STATES	
SECURITIES AND EXCHANGE COMMISSION	
Washington, D.C. 20549	
	
FORM 25	
	 NOTIFICATION OF REMOVAL FROM LISTING AND/OR REGISTRATION UNDER SECTION 12(b) OF THE SECURITIES EXCHANGE ACT OF 1934.		
	
Commission File Number 001-36473	
	
Issuer: 	Trinseo S.A.	
Exchange: 	NEW YORK STOCK EXCHANGE LLC	
(Exact name of Issuer as specified in its charter, and name of Exchange where security is listed and/or registered)	
	
Address: 	1000 Chesterbrook Blvd, Suite 300
Berwyn,
PENNSYLVANIA
19312	
Telephone number: 	(610) 240-3200	
(Address, including zip code, and telephone number, including area code, of Issuer's principal executive offices)	
	
Ordinary Shares	
(Description of class of securities)	
	
Please place an X in the box to designate the rule provision relied upon to strike the class of securities from listing and registration:	
o 17 CFR 240.12d2-2(a)(1)	
o 17 CFR 240.12d2-2(a)(2)	
x 17 CFR 240.12d2-2(a)(3)	
o 17 CFR 240.12d2-2(a)(4)	
o  Pursuant to 17 CFR 240.12d2-2(b), the Exchange has complied with its rules to strike the class of securities from listing and/or withdraw registration on the Exchange. 1	
o  Pursuant to 17 CFR 240.12d2-2(c), the Issuer has complied with its rules of the Exchange and the requirements of 17 CFR 240.12d-2(c) governing the voluntary withdrawal of the class of securities from listing and registration on the Exchange.	
	
Pursuant to the requirements for the Securities Exchange Act of 1934, NEW YORK STOCK EXCHANGE LLC certifies that it has reasonable grounds to believe that it meets all of the requirements for filing the Form 25 and has caused this notification to be signed on its behalf by the undersigned duly authorized person.	
	
2021-10-08	By	Jonathan Martin		Manager, Market Watch and Proxy Compliance	
Date		Name		Title	
	
1	Form 25 and attached Notice will be considered compliance with the provisions of 17 CFR 240.19d-1 as applicable. See General Instructions. 	

NOTIFICATION OF THE REMOVAL FROM LISTING AND REGISTRATION OF THE STATED SECURITIES
The New York Stock Exchange hereby notifies the SEC of its intention to remove the entire class of the stated securities from listing and registration on the Exchange at the opening of business on October 19, 2021, pursuant to the provisions of Rule 12d2-2 (a).
[ X ] 17 CFR 240.12d2-2(a)(3) That on October 8, 2021, the instruments representing the securities comprising the entire class of this security came to evidence, by operation of law or otherwise, other securities in substitution therefore and represent no other right except, if such be the fact, the right to receive an immediate cash payment.
The merger between Trinseo S.A (Luxembourg) and Trinseo PLC (Ireland) became effective after market close on October 8, 2021. As a result of the Merger, all of Trinseo S.A.'s (Luxembourg) outstanding ordinary shares were exchanged on a one-for-one basis for newly issued ordinary shares of Trinseo PLC (Ireland) This Form 25 is being filed solely in connection with the discontinuation of the trading on the NYSE of Trinseo S.A. Ordinary Shares (Luxembourg) and does not affect the continued listing on the NYSE of the Trinseo PLC Ordinary Shares (Ireland).
The Exchange also notifies the Securities and Exchange Commission that as a result of the above indicated conditions this security will be suspended from trading prior to market open on October 11, 2021.