<SEC-DOCUMENT>0001104659-26-065729.txt : 20260522
<SEC-HEADER>0001104659-26-065729.hdr.sgml : 20260522
<ACCEPTANCE-DATETIME>20260522161529
ACCESSION NUMBER:		0001104659-26-065729
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		2
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20251231
</ITEM>
</RULE>
FILED AS OF DATE:		20260522
DATE AS OF CHANGE:		20260522

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Trinseo PLC
		CENTRAL INDEX KEY:			0001519061
		STANDARD INDUSTRIAL CLASSIFICATION:	PLASTICS, MATERIALS, SYNTH RESINS & NONVULCAN ELASTOMERS [2821]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		EIN:				000000000
		STATE OF INCORPORATION:			L2
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36473
		FILM NUMBER:		261014003

	BUSINESS ADDRESS:	
		STREET 1:		440 EAST SWEDESFORD ROAD
		STREET 2:		SUITE 301
		CITY:			WAYNE
		STATE:			PA
		ZIP:			19087
		BUSINESS PHONE:		610-240-3200

	MAIL ADDRESS:	
		STREET 1:		440 EAST SWEDESFORD ROAD
		STREET 2:		SUITE 301
		CITY:			WAYNE
		STATE:			PA
		ZIP:			19087

	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>SD
<SEQUENCE>1
<FILENAME>tse-20260522xsd.htm
<DESCRIPTION>SD
<TEXT>
<!--Enhanced HTML document created with Toppan Merrill Bridge  11.2.0.21--><!--Created on: 5/19/2026 12:09:31 PM (UTC)--><html><head><meta charset="UTF-8"><title></title></head><body><div style="margin-top:30pt;"></div><div style="max-width:100%;padding-left:5.88%;padding-right:5.88%;position:relative;"><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-bottom:1pt;padding-top:1pt;background:#ffffff;border-bottom:1.0pt solid #000000;border-top:3.0pt solid #000000;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;"><b style="font-weight:bold;">UNITED STATES</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;"><b style="font-weight:bold;">SECURITIES AND EXCHANGE COMMISSION</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;"><b style="font-weight:bold;">Washington, D.C. 20549</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;background:#ffffff;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><div style="font-family:'Times New Roman','Times','serif';font-size:10.0pt;margin-bottom:0pt;min-height:1.19em;position:relative;width:100%;background:#ffffff;"><hr noshade="true" color="#000000" size="1" width="25.0%" style="background-color:#000000;color:#000000;height:1pt;position:relative;top:0.6em;border:none;margin:0 auto;" align="center"></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;"><b style="font-size:12pt;font-weight:bold;">FORM SD</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;"><font style="font-weight:bold;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;"><b style="font-weight:bold;">Specialized Disclosure Report</b></p><div style="font-family:'Times New Roman','Times','serif';font-size:10.0pt;margin-bottom:0pt;min-height:1.19em;position:relative;width:100%;background:#ffffff;"><hr noshade="true" color="#000000" size="1" width="25.0%" style="background-color:#000000;color:#000000;height:1pt;position:relative;top:0.6em;border:none;margin:0 auto;" align="center"></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;background:#ffffff;margin:0pt;"><font style="font-size:12pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;"><b style="font-size:12pt;font-weight:bold;">Trinseo PLC</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;">(Exact name of registrant as specified in its charter)</p><div style="font-family:'Times New Roman','Times','serif';font-size:10.0pt;margin-bottom:0pt;min-height:1.19em;position:relative;width:100%;background:#ffffff;"><hr noshade="true" color="#000000" size="1" width="25.0%" style="background-color:#000000;color:#000000;height:1pt;position:relative;top:0.6em;border:none;margin:0 auto;" align="center"></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;background:#ffffff;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><div><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;" align="center"><tr style="height:1pt;"><td style="vertical-align:top;width:32%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="position:absolute;top:0pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></div></div></td><td style="vertical-align:bottom;width:2%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></div></div></td><td style="vertical-align:top;width:32%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="position:absolute;top:0pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></div></div></td><td style="vertical-align:bottom;width:2%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></div></div></td><td style="vertical-align:top;width:32%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="position:absolute;top:0pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></div></div></td></tr><tr style=""><td style="vertical-align:top;width:32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;"><b style="font-weight:bold;">Ireland</b></p></td><td style="vertical-align:bottom;width:2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;background:#ffffff;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></td><td style="vertical-align:top;width:32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;"><b style="font-weight:bold;">001-36473</b></p></td><td style="vertical-align:bottom;width:2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;background:#ffffff;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></td><td style="vertical-align:top;width:32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;"><b style="font-weight:bold;">N/A</b></p></td></tr><tr style=""><td style="vertical-align:top;width:32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;">(State or other jurisdiction<br>of incorporation or organization)</p></td><td style="vertical-align:bottom;width:2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;background:#ffffff;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></td><td style="vertical-align:top;width:32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;">(Commission<br>File Number)</p></td><td style="vertical-align:bottom;width:2%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;background:#ffffff;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></td><td style="vertical-align:top;width:32%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;">(I.R.S. Employer<br>Identification Number)</p></td></tr></table></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;"><b style="font-weight:bold;">440 East Swedesford Road, Suite&#160;301</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;"><b style="font-weight:bold;">Wayne, Pennsylvania 19087</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;">(Address of principal executive offices) (Zip code)</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;background:#ffffff;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;"><b style="font-weight:bold;">Angelo Chaclas, Senior Vice President, Chief Legal Counsel, </b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;"><b style="font-weight:bold;">Chief Compliance Officer and Corporate Secretary (610) 240-3200</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;background:#ffffff;margin:0pt;">(Name and telephone number, including area code, of the person to contact in connection with this report.)</p><div style="font-family:'Times New Roman','Times','serif';font-size:10.0pt;margin-bottom:0pt;min-height:1.19em;position:relative;width:100%;background:#ffffff;"><hr noshade="true" color="#000000" size="1" width="25.0%" style="background-color:#000000;color:#000000;height:1pt;position:relative;top:0.6em;border:none;margin:0 auto;" align="center"></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;background:#ffffff;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;">Check the appropriate box to indicate the rule pursuant to which this Form is being submitted, and provide the period to which the information in this Form applies:</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">&#160;</p><table border="0" cellpadding="0" cellspacing="0"><tr><td style="vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;text-align:justify;"><font style="font-family:'Times New Roman';">&#8999;</font></p></td><td style="padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;text-align:justify;">Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2025.</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;background:#ffffff;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;background:#ffffff;margin:0pt;"><font style="display:inline-block;text-indent:0pt;width:36pt;"><font style="font-family:'Segoe UI Symbol';font-size:10pt;font-style:normal;font-weight:normal;">&#9744;</font></font>Rule 13q-1 under the Securities Exchange Act (17 CFR 240.13q-1) for the fiscal year ended&#8195;&#8195;&#8195;&#8195;.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-bottom:1pt;padding-top:1pt;background:#ffffff;border-bottom:3.0pt solid #000000;border-top:1.0pt solid #000000;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-weight:bold;visibility:hidden;">&#8203;</font></p><p style="display:none;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:0pt;margin:0pt 0pt 10pt 0pt;"><font style="font-size:0pt;font-weight:bold;line-height:1.19;margin-bottom:0pt;visibility:hidden;">&#8203;</font></p></div></div><hr style="background-color:#000000;clear:both;color:#000000;height:2pt;line-height:0;margin-bottom:30pt;margin-left:5.88%;margin-right:5.88%;margin-top:30pt;page-break-after:always;width:88.24%;border-width:0;"><div style="max-width:100%;padding-left:8.82%;padding-right:8.82%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></div><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><b style="font-size:11pt;font-weight:bold;">Section 1 - Conflict Minerals Disclosure</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><b style="font-size:11pt;font-weight:bold;">Item 1.01 Conflict Minerals Disclosure and Report</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><font style="font-size:11pt;">Trinseo PLC (the &#8220;Company&#8221;</font><font style="font-size:11pt;">) </font><font style="font-size:11pt;">is filing this Form SD pursuant to Rule 13p-1 under the Securities Exchange Act of 1934, as amended, for the reporting period from January 1, 2025 to December 31, 2025.</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><font style="font-size:11pt;">The description of the Company&#8217;s reasonable country of origin inquiry (RCOI) process, the results of its inquiry, and the determination reached as a result of the RCOI are included in the Company&#8217;s Conflict Minerals Report, attached as an exhibit to this Form SD.</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><i style="font-size:11pt;font-style:italic;">Conflict Mineral Disclosure</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><font style="font-size:11pt;">A copy of </font><font style="font-size:11pt;">the Company&#8217;s</font><font style="font-size:11pt;"> Conflict Minerals Report is provided as Exhibit 1.01 to this Form SD and is publicly available on the Company&#8217;s website at </font><u style="font-size:11pt;text-decoration-color:#000000;text-decoration-line:underline;text-decoration-style:solid;">https://www.trinseo.com/conflict-minerals-statement</u><font style="font-size:11pt;">. The content of the website referenced is included for information purposes only and is not incorporated by reference into this Form SD.</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><b style="font-size:11pt;font-weight:bold;">Item 1.02 Exhibit</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">A copy of the Conflict Minerals Report is filed as </font><u style="font-size:11pt;text-decoration-color:#000000;text-decoration-line:underline;text-decoration-style:solid;">Exhibit 1.01</u><font style="font-size:11pt;"> hereto.</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><b style="font-size:11pt;font-weight:bold;">Section 2 &#8211; Exhibits</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="display:inline-block;text-indent:0pt;width:72pt;"><b style="font-family:'Times New Roman','Times','serif';font-size:11pt;font-style:normal;font-weight:bold;">Item 2.01</b></font><b style="font-size:11pt;font-weight:bold;">Exhibits</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="display:inline-block;text-indent:0pt;width:36pt;"><font style="font-family:'Times New Roman','Times','serif';font-size:11pt;font-style:normal;font-weight:normal;">1.01</font></font><a name="TSE_20190805X8KBAA8E92_HTM__DF4E05A9_37B"></a><a name="FIS_SIGNATURES"></a><a style="font-family:&quot;'Times New Roman','Times','serif'&quot;;font-size:11pt;" href="tse-20260522xex1.htm"><font style="font-family:'Times New Roman','Times','serif';font-style:normal;font-weight:normal;">Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form SD</font></a></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.37;margin:0pt;"><font style="font-size:11pt;line-height:1.19;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.37;margin:0pt;"><font style="font-size:11pt;line-height:1.19;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.37;margin:0pt;"><font style="font-size:11pt;line-height:1.19;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.37;margin:0pt 0pt 10pt 0pt;"><font style="font-size:11pt;line-height:1.19;margin-bottom:0pt;visibility:hidden;">&#8203;</font></p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></div></div><hr style="background-color:#000000;clear:both;color:#000000;height:2pt;line-height:0;margin-bottom:30pt;margin-left:8.82%;margin-right:8.82%;margin-top:30pt;page-break-after:always;width:82.35%;border-width:0;"><div style="max-width:100%;padding-left:8.82%;padding-right:8.82%;position:relative;"><div style="margin-top:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></div><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.37;margin:0pt;"><font style="font-size:11pt;line-height:1.19;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:11pt;font-weight:bold;">SIGNATURE</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-indent:36pt;margin:0pt;"><font style="font-size:11pt;">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the duly authorized undersigned.</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><div><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:98.34%;" align="center"><tr style="height:1pt;"><td style="vertical-align:bottom;width:46.6%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"></div></div></td><td style="vertical-align:bottom;width:7.85%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"></div></div></td><td style="vertical-align:bottom;width:45.53%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"></div></div></td></tr><tr style=""><td style="vertical-align:bottom;width:46.6%;margin:0pt;padding:0pt;"></td><td colspan="2" style="vertical-align:bottom;width:53.39%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><b style="font-size:11pt;font-weight:bold;">TRINSEO PLC</b></p></td></tr><tr style=""><td style="vertical-align:bottom;width:46.6%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:7.85%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:45.53%;margin:0pt;padding:0pt;"></td></tr><tr style=""><td style="vertical-align:bottom;width:46.6%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:7.85%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:45.53%;margin:0pt;padding:0pt;"></td></tr><tr style=""><td style="vertical-align:bottom;width:46.6%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:7.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">By:</font></p></td><td style="vertical-align:bottom;width:45.53%;border-bottom:1.0pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">/s/ </font><font style="font-size:11pt;">Angelo Chaclas</font></p></td></tr><tr style=""><td style="vertical-align:bottom;width:46.6%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:7.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Name:</font></p></td><td style="vertical-align:bottom;width:45.53%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Angelo Chaclas</font></p></td></tr><tr style=""><td style="vertical-align:bottom;width:46.6%;margin:0pt;padding:0pt;"></td><td style="vertical-align:top;width:7.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Title:</font></p></td><td style="vertical-align:bottom;width:45.53%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Senior Vice President, Chief Legal Counsel, </font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Chief Compliance Officer and Corporate Secretary</font></p></td></tr><tr style="height:14.85pt;"><td style="vertical-align:bottom;width:46.6%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:7.85%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:45.53%;margin:0pt;padding:0pt;"></td></tr><tr style=""><td style="vertical-align:bottom;width:46.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p></td><td style="vertical-align:bottom;width:7.85%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:45.53%;margin:0pt;padding:0pt;"></td></tr><tr style=""><td style="vertical-align:bottom;width:46.6%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:7.85%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;white-space:pre-wrap;">Date:  </font></p></td><td style="vertical-align:bottom;width:45.53%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">May 22, 2026</font></p></td></tr></table></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></div><div style="clear:both;margin-bottom:30pt;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="visibility:hidden;">&#8203;</font></p></div></div><hr style="background-color:#000000;clear:both;color:#000000;height:2pt;line-height:0;margin-left:8.82%;margin-right:8.82%;margin-top:30pt;page-break-after:avoid;width:82.35%;border-width:0;"></body></html>
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<!--Enhanced HTML document created with Toppan Merrill Bridge  11.2.0.21--><!--Created on: 5/19/2026 12:09:31 PM (UTC)--><html><head><meta charset="UTF-8"><title></title></head><body><div style="margin-top:30pt;"></div><div style="max-width:100%;padding-left:8.82%;padding-right:8.82%;position:relative;"><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:right;margin:0pt;"><b style="font-size:11pt;font-weight:bold;">Exhibit 1.01</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">&#160;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:11pt;font-weight:bold;">TRINSEO PLC</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:11pt;font-weight:bold;">Conflict Minerals Report</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:11pt;font-weight:bold;">For the Reporting Period from January 1, 2025 to December 31, 2025</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-size:11pt;font-weight:bold;">&#160;</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><font style="font-size:11pt;">This Conflict Minerals Report (the &#8220;Report&#8221;) of Trinseo PLC (&#8220;Trinseo&#8221; or the &#8220;Company&#8221;) for the reporting period from January 1 through December 31, 2025 (&#8220;Reporting Period&#8221;) is filed as an exhibit to Form SD as provided for in Rule 13p-1 (&#8220;Rule&#8221;) under the Securities Exchange Act of 1934, as amended. The Rule requires certain reporting obligations on companies whose manufactured or contracted for manufacture products contain conflict minerals, as defined in the Rule, that are necessary to the functionality or production of their products. &#8220;Conflict Minerals&#8221; are defined as cassiterite, columbite-tantalite, gold, wolframite, and their derivatives, which are limited to tin, tantalum, and tungsten. </font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><font style="font-size:11pt;">This Report relates to products that were manufactured by the Company, or contracted to be manufactured for the Company, for which Conflict Minerals are necessary to the functionality or production (the &#8220;Products&#8221;). This Report details the processes undertaken by the Company to identify such Products and determine the country of origin of the necessary Conflict Minerals, as well as outlining additional due diligence processes undertaken by the Company. Trinseo&#8217;s Statement on Conflict Minerals is available on its website at </font><u style="font-size:11pt;text-decoration-color:#000000;text-decoration-line:underline;text-decoration-style:solid;">https://www.trinseo.com/conflict-minerals-statement</u><font style="font-size:11pt;">. The content of the website referenced is included for information purposes only and is not incorporated by reference into this Report.</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><table border="0" cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="font-family:'Times New Roman','Times','serif';font-size:11pt;font-weight:bold;vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;">I.</td><td style="padding:0pt;"><b style="font-family:'Times New Roman','Times','serif';font-size:11pt;font-style:normal;font-weight:bold;">Company Overview</b></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:36pt;margin:0pt;"><font style="font-size:11pt;">Trinseo is a specialty material solutions provider with products incorporated into a wide range of its customers&#8217; products throughout the world, including products for building and construction, automotive applications, paper and board, appliances, packaging, textile, and consumer electronics, among others. Trinseo has manufacturing and production operations around the world, which allow us to serve a global customer base. The Company focuses on partnering with companies to bring ideas to life in an imaginative, smart, and sustainability-focused manner, and has long-standing relationships with a diverse base of global customers, many of whom are leaders in their end-use application markets and rely on us for formulation, technological differentiation, and compounding expertise to find sustainable solutions for their businesses. Many of Trinseo&#8217;s products represent only a small portion of a finished product&#8217;s manufacturing costs, but provide critical functionality to the finished product and are often specifically developed to meet customer specifications. </font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><table border="0" cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="font-family:'Times New Roman','Times','serif';font-size:11pt;font-weight:bold;vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;">II.</td><td style="padding:0pt;"><b style="font-family:'Times New Roman','Times','serif';font-size:11pt;font-style:normal;font-weight:bold;">Reasonable Country of Origin Inquiry</b></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:36pt;margin:0pt;"><font style="font-size:11pt;">For the Reporting Period, the Company determined that it manufactures or contracts to manufacture certain products that contain Conflict Minerals necessary to the functionality or production of such products. As required by Form SD, Trinseo conducted, in good faith, a reasonable country of origin inquiry (&#8220;RCOI&#8221;) regarding the Conflict Minerals included in its Products manufactured during the Reporting Period to determine whether any of such Conflict Minerals originated in the Democratic Republic of the Congo or an &#8220;adjoining country&#8221; (as defined in Form SD) (collectively, the &#8220;Covered Countries&#8221;) and whether any of such Conflict Minerals may be from recycled or scrap sources. During the Reporting Period, the Company assembled a working group (the &#8220;Conflict Minerals Group&#8221;) that identified certain raw materials used in the Products that contained a Conflict Mineral, as well as the suppliers of such raw materials. The Conflict Minerals Group then c</font><font style="font-size:11pt;">ontacted these suppliers to determine if the Conflict Minerals were sourced from a Covered Country or were derived from scrap or recycled material. </font><font style="font-size:11pt;">As a result of the RCOI processes, a Conflict Mineral, tin, was identified as being incorporated into the Products. The Products are produced by the Company&#8217;s Engineered Materials segment for its polymethyl methacrylate sheet products, which are used in various consumer and industrial end-use applications.</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><font style="font-size:11pt;">The Company does not directly purchase these minerals from smelters or refiners (collectively referred to herein as &#8220;smelters&#8221;) or mines and therefore it must rely on its suppliers to provide information about the origin of the Conflict Minerals in its Products. There may be several third parties in the supply chains between the original sources of the Conflict Minerals and the Company&#8217;s ultimate manufacture of its Products.</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p></div></div><hr style="background-color:#000000;clear:both;color:#000000;height:2pt;line-height:0;margin-bottom:30pt;margin-left:8.82%;margin-right:8.82%;margin-top:30pt;page-break-after:always;width:82.35%;border-width:0;"><div style="max-width:100%;padding-left:8.82%;padding-right:8.82%;position:relative;"><div style="clear:both;max-width:100%;position:relative;"><table border="0" cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;text-align:justify;width:100%;border:0pt;"><tr><td style="font-family:'Times New Roman','Times','serif';font-size:11pt;font-weight:bold;vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;">III.</td><td style="padding:0pt;"><b style="font-family:'Times New Roman','Times','serif';font-size:11pt;font-style:normal;font-weight:bold;">Trinseo&#8217;s Conflict Minerals Due Diligence Process</b></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:36pt;margin:0pt;"><font style="font-size:11pt;">To support Trinseo&#8217;s RCOI for the Reporting Period, the Company took due diligence measures to verify the source and chain of custody of Conflict Minerals used in its Products. These measures were intended to conform to the framework of the Organisation for Economic Co-operation and Development&#8217;s Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High-Risk Areas (&#8220;OECD Guidance&#8221;). The OECD Guidance provides a five-step framework for risk-based due diligence of the Conflict Mineral supply chain. The following is a description of the due diligence measures performed for the Reporting Period pursuant to the OECD Guidance:</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 36pt;"><u style="font-size:11pt;font-style:italic;font-weight:bold;text-decoration-color:#000000;text-decoration-line:underline;text-decoration-style:solid;">Step One</u><font style="font-size:11pt;font-style:italic;font-weight:bold;">: Establish and maintain strong company management systems</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 36pt;"><font style="font-size:11pt;">The Conflict Minerals Group includes representatives from the Company&#8217;s Product Stewardship, Procurement and Legal groups, ultimately reporting to the Chief Compliance Officer (&#8220;CCO&#8221;). The Company&#8217;s </font><font style="font-size:11pt;">Supplier Code of Conduct contains a requirement that its suppliers not source Conflict Minerals from Covered Countries in a manner which directly or indirectly finances or benefits armed groups in the Covered Countries. </font><font style="font-size:11pt;">The Company made </font><a name="_Hlk196767554"></a><font style="font-size:11pt;">its Supplier Code of Conduct </font><font style="font-size:11pt;">available to its suppliers with the expectation that they comply with its provisions on Conflict Minerals. Additionally, suppliers of raw materials were asked to complete a questionnaire to determine if the raw materials they supply contained Conflict Minerals, and a member of the Conflict Minerals Group reviewed any questionnaires which answered positively. A member of the Conflict Minerals Group also reviewed raw materials supplied to the Company to determine if any such raw materials were likely to contain Conflict Minerals, and determined if follow up with such supplier was warranted. The Company&#8217;s practice is to retain questionnaires and other diligence responses for ten years. The Company also maintains an ethics and compliance hotline, which is available to suppliers through its website, </font><u style="font-size:11pt;text-decoration-color:#000000;text-decoration-line:underline;text-decoration-style:solid;">trinseo.com</u><font style="font-size:11pt;">.</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 36pt;"><font style="font-size:11pt;margin-left:0pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 36pt;"><u style="font-size:11pt;font-style:italic;font-weight:bold;text-decoration-color:#000000;text-decoration-line:underline;text-decoration-style:solid;">Step Two</u><font style="font-size:11pt;font-style:italic;font-weight:bold;">:</font><b style="font-size:11pt;font-weight:bold;"> </b><font style="font-size:11pt;font-style:italic;font-weight:bold;">Identify and assess risks in the supply chain</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 36pt;"><font style="font-size:11pt;">Suppliers of raw materials containing Conflict Minerals which were identified by the Conflict Minerals Group were sent a request to complete a Conflict Minerals Reporting Template (&#8220;CMRT&#8221;) questionnaire created by the Responsible Minerals Initiative (&#8220;RMI&#8221;), which requests that each supplier provide information on the type of Conflict Minerals provided to the Company during the Reporting Period and the source of such Conflict Minerals, including their country of origin, the names and locations of the smelters used, and the RMI identification number of these smelters. </font><font style="font-size:11pt;">A member of the Conflict Minerals Group reviewed CMRT questionnaires to determine which supplier responses required further engagement and </font><font style="font-size:11pt;">followed up with these suppliers periodically with additional requests for information as necessary, with the expectation that they timely respond. Where applicable, suppliers were requested to provide similar information from vendors within their supply chain. Any non-responsive suppliers were contacted via email or phone. </font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 36pt;"><font style="font-size:11pt;margin-left:0pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 36pt;"><font style="font-size:11pt;">Supplier responses that included the names of smelters were compared to the list of active and conformant smelters and refiners identified by the RMI on its website. Based on that comparison, the Company determined how many were deemed to be conformant or active, as those terms are defined by the RMI, in its RMI Responsible Minerals Assurance Process (&#8220;RMAP&#8221;).</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 18pt;"><font style="font-size:11pt;margin-left:0pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 0pt 36pt;"><u style="font-size:11pt;font-style:italic;font-weight:bold;text-decoration-color:#000000;text-decoration-line:underline;text-decoration-style:solid;">Step Three</u><font style="font-size:11pt;font-style:italic;font-weight:bold;">:</font><b style="font-size:11pt;font-weight:bold;"> </b><font style="font-size:11pt;font-style:italic;font-weight:bold;">Design and implement a strategy to respond to identified risks</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 36pt;"><font style="font-size:11pt;">To respond to the supply chain risk assessment outlined above, the Company first engages in further Conflict Minerals diligence to contact suppliers of directly for additional information, and reports its findings to senior management. When specific risks are identified, the Conflict Minerals Group will evaluate a potential response which will vary based on the individual facts and circumstances and which may include education of suppliers of the Company&#8217;s Supplier Code of Conduct, notices to suppliers that have violated the Supplier Code of Conduct or suspension of purchases from such suppliers, among other responses. When smelters are disclosed in a CMRT questionnaire, the names of smelters are compared to the list of active and conformant smelters identified on the RMI website.</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 36pt;"><font style="font-size:11pt;margin-left:0pt;visibility:hidden;">&#8203;</font></p></div></div><hr style="background-color:#000000;clear:both;color:#000000;height:2pt;line-height:0;margin-bottom:30pt;margin-left:8.82%;margin-right:8.82%;margin-top:30pt;page-break-after:always;width:82.35%;border-width:0;"><div style="max-width:100%;padding-left:8.82%;padding-right:8.82%;position:relative;"><div style="clear:both;max-width:100%;position:relative;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 36pt;"><u style="font-size:11pt;font-style:italic;font-weight:bold;text-decoration-color:#000000;text-decoration-line:underline;text-decoration-style:solid;">Step Four</u><font style="font-size:11pt;font-style:italic;font-weight:bold;">:</font><b style="font-size:11pt;font-weight:bold;"> </b><font style="font-size:11pt;font-style:italic;font-weight:bold;">Carry out independent third-party audit of smelters&#8217; due diligence practices</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 36pt;"><font style="font-size:11pt;">Trinseo does not have direct relationships with smelters identified by its suppliers as being in their supply chain, and does not perform or direct audits of these entities within its supply chain. The Company believes that audits of smelters&#8217; due diligence practices by third parties are the most efficient way to identify smelters that have due diligence systems in place that promote responsible sourcing. Therefore, the Company relies upon industry-wide efforts to influence smelters to be audited, and to provide certification of conformance with a recognized due diligence assessment scheme (e.g., the RMAP).</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 18pt;"><font style="font-size:11pt;margin-left:0pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 36pt;"><u style="font-size:11pt;font-style:italic;font-weight:bold;text-decoration-color:#000000;text-decoration-line:underline;text-decoration-style:solid;">Step Five</u><font style="font-size:11pt;font-style:italic;font-weight:bold;">: Report annually on supply chain due diligence</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt 0pt 0pt 36pt;"><font style="font-size:11pt;">The Company has filed its Form SD and this Conflict Minerals Report with the Securities and Exchange Commission to report on its supply chain due diligence. This Report is publicly available on the Company&#8217;s website at </font><u style="font-size:11pt;text-decoration-color:#000000;text-decoration-line:underline;text-decoration-style:solid;">https://www.trinseo.com/conflict-minerals-statement</u><font style="font-size:11pt;">.</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><table border="0" cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="font-family:'Times New Roman','Times','serif';font-size:11pt;font-weight:bold;vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;">IV.</td><td style="padding:0pt;"><b style="font-family:'Times New Roman','Times','serif';font-size:11pt;font-style:normal;font-weight:bold;">Results of Conflict Minerals Due Diligence</b></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:36pt;margin:0pt;"><font style="font-size:11pt;">The Company has determined that the most reasonable effort it can make to determine the locations of origin of Conflict Minerals is to continue to seek information from its direct suppliers about the smelters and the countries of origin of the Conflict Minerals in its supply chain, and encourage them to do the same with their suppliers. The Company must rely on direct and indirect suppliers to provide information about the location of origin of the Conflict Minerals in its Products. </font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:36pt;margin:0pt;"><font style="font-size:11pt;">As noted, the Company uses the CMRT questionnaire as part of its program to verify the source of Conflict Minerals in the raw materials used in its Products. All of the CMRT questionnaires received during the Reporting Period were completed at a company level, which means that Trinseo cannot confirm which specific processing facilities supply the Conflict Minerals included in the raw materials that supplied to the Company. For all responses that indicated a smelter, the Conflict Minerals Group compared the facilities named to the list of smelters maintained by the RMI </font><font style="font-size:11pt;">to determine if such smelters identified were active or conformant</font><font style="font-size:11pt;">. The Company relies on suppliers for accurate information about smelters. Based on the responses received, Trinseo cannot determine with absolute certainty the source and chain of custody of Conflict Minerals contained in its Products during the Reporting Period, and believes it does not have sufficient information to identify the specific smelters or origin of the Conflict Minerals used in its Products during the Reporting Period. To the extent smelter information was disclosed by suppliers, Trinseo believes the smelters disclosed below may have been used to process Conflict Minerals contained in the Products. Not all of these smelters may have processed the Conflict Minerals in the Products.</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;visibility:hidden;">&#8203;</font></p><div><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;width:82.98%;" align="center"><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;background:#bfbfbf;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><b style="font-size:11pt;font-weight:bold;">Metal</b></p></td><td style="vertical-align:middle;width:61.32%;background:#bfbfbf;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><b style="font-size:11pt;font-weight:bold;">Smelter Name</b></p></td><td style="vertical-align:middle;width:24.74%;background:#bfbfbf;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><b style="font-size:11pt;font-weight:bold;">Country</b></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Aurubis Beerse</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Belgium</font></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 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solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Operaciones Metalurgicas S.A.</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Bolivia </font></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Mineracao Taboca S.A.</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Brazil</font></p></td></tr><tr style="height:13.9pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin Smelting Branch of Yunnan Tin Co., Ltd.</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">China</font></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid 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style="font-size:11pt;">Indonesia</font></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">PT Bangka Serumpun</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid 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style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Indonesia</font></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New 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#000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">PT Mitra Sukses Globalindo</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Indonesia</font></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">PT Rajawali Rimba Perkasa</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Indonesia</font></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">PT Refined Bangka Tin</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Indonesia</font></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">PT Sariwiguna Binasentosa</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Indonesia</font></p></td></tr></table></div></div></div><hr style="background-color:#000000;clear:both;color:#000000;height:2pt;line-height:0;margin-bottom:30pt;margin-left:8.82%;margin-right:8.82%;margin-top:30pt;page-break-after:always;width:82.35%;border-width:0;"><div style="max-width:100%;padding-left:8.82%;padding-right:8.82%;position:relative;"><div style="clear:both;max-width:100%;position:relative;"><div><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;width:82.98%;" align="center"><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">PT Stanindo Inti Perkasa</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Indonesia</font></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">PT Timah Tbk Kundur</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Indonesia</font></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">PT Timah Tbk Mentok</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Indonesia</font></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Dowa</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Japan</font></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Mitsubishi Materials Corporation</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Japan</font></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Malaysia Smelting Corporation (MSC)</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Malaysia</font></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Minsur</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Peru</font></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Fenix Metals</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Poland</font></p></td></tr><tr style="height:15pt;"><td style="vertical-align:middle;width:13.92%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Tin</font></p></td><td style="vertical-align:middle;width:61.32%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Thaisarco</font></p></td><td style="vertical-align:middle;width:24.74%;border-bottom:1px solid #000000;border-left:1px solid #000000;border-right:1px solid #000000;border-top:1px solid #000000;margin:0pt;padding:0pt 5.15pt 0pt 5.15pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;">Thailand</font></p></td></tr></table></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><font style="font-size:11pt;visibility:hidden;background:#00ff00;">&#8203;</font></p><table border="0" cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="font-family:'Times New Roman','Times','serif';font-size:11pt;font-weight:bold;vertical-align:text-top;white-space:nowrap;width:36pt;padding:0pt;">V.</td><td style="padding:0pt;"><b style="font-family:'Times New Roman','Times','serif';font-size:11pt;font-style:normal;font-weight:bold;">Ongoing and Future Due Diligence Improvement Efforts</b></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;text-indent:36pt;margin:0pt;"><font style="font-size:11pt;">The Company intends to continue to conduct due diligence consistent with its process used during the Reporting Period. This includes c</font><font style="font-size:11pt;">ommunication of the Supplier Code of Conduct to new suppliers and engagement with suppliers to clarify their responses and encourage supplier responsiveness.</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.37;margin:0pt;"><font style="font-size:11pt;line-height:1.19;visibility:hidden;">&#8203;</font></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><i style="font-size:11pt;font-style:italic;">Forward-Looking Statements</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:justify;margin:0pt;"><i style="font-size:11pt;font-style:italic;">Statements in this Report which express a belief, expectation or intention, as well as those that are not historical fact, are forward-looking statements, including statements related to the Company&#8217;s compliance efforts and expected actions identified in this Report. These forward-looking statements are subject to various risks, uncertainties and assumptions, including, among other matters, suppliers&#8217; responsiveness and cooperation with the Company&#8217;s due diligence efforts, incomplete supplier data or a lack of available smelter data, errors or omissions by suppliers, incomplete information from industry or other third-party sources, the Company&#8217;s ability to implement improvements in its conflict minerals program, and the Company&#8217;s ability to identify and mitigate related risks in its supply chain. If one or more of these or other risks materialize, actual results may vary materially from those expressed. The Company undertakes no obligation to update or revise any forward-looking statement, except to the extent required by applicable law.</i></p></div></div><hr style="background-color:#000000;clear:both;color:#000000;height:2pt;line-height:0;margin-left:8.82%;margin-right:8.82%;margin-top:30pt;page-break-after:avoid;width:82.35%;border-width:0;"></body></html>
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