<SEC-DOCUMENT>0001179110-21-010483-index.html : 20211201
<SEC-HEADER>0001179110-21-010483.hdr.sgml : 20211201
<ACCEPTANCE-DATETIME>20211201144904
ACCESSION NUMBER:		0001179110-21-010483
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20211129
FILED AS OF DATE:		20211201
DATE AS OF CHANGE:		20211201

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Cooney Paula M.
		CENTRAL INDEX KEY:			0001670565

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36473
		FILM NUMBER:		211462605

	MAIL ADDRESS:	
		STREET 1:		1200 WILLOW LAKE BLVD.
		STREET 2:		P.O. BOX 64683
		CITY:			ST. PAUL
		STATE:			MN
		ZIP:			55110

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Trinseo PLC
		CENTRAL INDEX KEY:			0001519061
		STANDARD INDUSTRIAL CLASSIFICATION:	PLASTICS, MATERIALS, SYNTH RESINS & NONVULCAN ELASTOMERS [2821]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			L2
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1000 CHESTERBROOK BOULEVARD
		STREET 2:		SUITE 3000
		CITY:			BERWYN
		STATE:			PA
		ZIP:			19312
		BUSINESS PHONE:		610-240-3200

	MAIL ADDRESS:	
		STREET 1:		1000 CHESTERBROOK BOULEVARD
		STREET 2:		SUITE 3000
		CITY:			BERWYN
		STATE:			PA
		ZIP:			19312

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Trinseo S.A.
		DATE OF NAME CHANGE:	20110429

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Bain Capital Everest (Luxco 2) S.a r.l.
		DATE OF NAME CHANGE:	20110426
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 3 -
<TEXT>
Document 1 - file: edgar.html

Document 1 - RAW XML: edgar.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>ex24cooney.txt
<TEXT>
Document 2 - file: ex24cooney.txt

</DOCUMENT>
</SEC-DOCUMENT>