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chapter) or Rule&#160;12b-2 of the Securities Exchange Act of 1934 (&#167;240.12b-2 of this chapter).</p><p style="background-color:#ffffff;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="background-color:#ffffff;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Emerging growth company <ix:nonNumeric contextRef="Duration_10_21_2021_To_10_21_2021_ESYRLPuNikiD4kFyDnA_7g" format="ixt-sec:boolballotbox" name="dei:EntityEmergingGrowthCompany" id="Narr_q4otvvjJ3Uq-kXgQ9w-7Og"><span style="font-family:'Segoe UI Symbol';">&#9744;</span></ix:nonNumeric></p><p style="background-color:#ffffff;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="background-color:#ffffff;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-bottom:6pt;margin:0pt;">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section&#160;13(a)&#160;of the Exchange Act. <span style="font-family:'Segoe UI Symbol';">&#9744;</span></p><p style="background-color:#ffffff;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt 0pt 6pt 0pt;">Securities registered pursuant to Section 12(b) of the Act:</p><a id="_44be8218_0215_4675_aa98_5b460d437c96"></a><a id="Tc_0y1cH91VZ0O4brwUd91lZA_1_0"></a><a id="Tc_gwvAy4rlqEaLWdsPZZNTFA_1_1"></a><a id="Tc_TLcZlNDxkUicblZzE4Gc0w_1_2"></a><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;width:100%;"><tr style="height:1pt;"><td style="vertical-align:top;width:33.31%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><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;"><span style="font-size:1pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:top;width:33.34%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><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;"><span style="font-size:1pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:top;width:33.34%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><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;"><span style="font-size:1pt;font-weight:bold;visibility:hidden;">&#8203;</span></p></div></div></td></tr><tr><td style="vertical-align:top;width:33.31%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.37;text-align:center;margin:0pt;"><b style="font-weight:bold;text-decoration:underline;text-decoration-color:#000000;">Title of Each Class</b></p></td><td style="vertical-align:top;width:33.34%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;text-decoration:underline;text-decoration-color:#000000;">Trading symbol(s)</b></p></td><td style="vertical-align:top;width:33.34%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:8pt;line-height:1.19;text-align:center;margin:0pt;"><b style="font-weight:bold;text-decoration:underline;text-decoration-color:#000000;">Name of Each Exchange on which registered</b></p></td></tr><tr><td style="vertical-align:top;width:33.31%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><ix:nonNumeric contextRef="Duration_10_21_2021_To_10_21_2021_ESYRLPuNikiD4kFyDnA_7g" name="dei:Security12bTitle" id="Tc_1T3MrF51i0y1BTUPiOT6qw_2_0"><b style="font-size:9pt;font-weight:bold;">Ordinary Shares, par value $0.01 per share</b></ix:nonNumeric></p></td><td style="vertical-align:top;width:33.34%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><ix:nonNumeric contextRef="Duration_10_21_2021_To_10_21_2021_ESYRLPuNikiD4kFyDnA_7g" name="dei:TradingSymbol" id="Tc_DN9gsEmG1kuNbe_pMUA8Eg_2_1"><b style="font-size:9pt;font-weight:bold;">TSE</b></ix:nonNumeric></p></td><td style="vertical-align:top;width:33.34%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><ix:nonNumeric contextRef="Duration_10_21_2021_To_10_21_2021_ESYRLPuNikiD4kFyDnA_7g" format="ixt-sec:exchnameen" name="dei:SecurityExchangeName" id="Tc_fxUle9iiVEewaF97_aWq3w_2_2"><b style="font-size:9pt;font-weight:bold;">New York Stock Exchange</b></ix:nonNumeric></p></td></tr></table><p style="background-color:#ffffff;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p><p style="background-color:#ffffff;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="background-color:#ffffff;font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;padding-bottom:1pt;padding-top:1pt;border-bottom:3.0pt solid #000000;border-top:1.0pt solid #000000;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></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;"><a id="_8f4f5efd_d2d1_4df0_8d9c_1d9cb13962d4"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;white-space:pre-wrap;">ITEM 5.02  Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;">(b) Departure of Certain Officers</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-indent:36pt;margin:0pt;"><span style="white-space:pre-wrap;">On October 27, 2021, Trinseo PLC (the &#8220;Company&#8221;) announced that Alice Heezen, the Company&#8217;s Senior Vice President, Human Resources is leaving the Company to pursue other opportunities.  Effective as of November 29, 2021, Paula M. Cooney, will join the Company as Senior Vice President, Chief Human Resources Officer.  Ms. Heezen will serve in an advisory capacity for a period following her termination.  </span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><b style="font-weight:bold;">(e) Compensatory Arrangements of Certain Officers</b></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-indent:36pt;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-indent:36pt;margin:0pt;">On October 25, 2021, in connection with her termination, Ms. Heezen entered into a separation agreement with the Company&#8217;s subsidiary, Trinseo Europe GmbH, pursuant to which Ms. Heezen will continue to receive her base salary through the end of her remaining employment period, and will be eligible to receive the full amount of her 2021 annual cash bonus based on the Company&#8217;s actual performance, and with her individual performance goal achievement set at target. Ms. Heezen will also receive continued health and welfare benefits as provided in her employment contract or required by local law. The foregoing summary of the agreement with Ms. Heezen is supplemented and qualified in all respects by reference to the full terms of the agreement, a copy of which is attached hereto as Exhibit 10.1 and incorporated by reference. A copy of the Company&#8217;s press release announcing the departure of Ms. Heezen is attached hereto as Exhibit 99.1 and incorporated herein by reference.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.9pt;margin:0pt;"><span style="display:inline-block;text-indent:0pt;width:72pt;"><b style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:bold;text-align:left;">ITEM 9.01</b></span><b style="font-weight:bold;">Exhibits</b>.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.9pt;margin:0pt;"><span style="line-height:1.19;visibility:hidden;">&#8203;</span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;width:100%;"><tr style="height:1pt;"><td style="vertical-align:top;width:10.04%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="position:absolute;top:0pt;width:100%;"></div></div></td><td style="vertical-align:top;width:2.49%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><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;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p></div></div></td><td style="vertical-align:top;width:87.46%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="position:absolute;top:0pt;width:100%;"></div></div></td></tr><tr><td style="vertical-align:top;width:10.04%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.9pt;margin:0pt;">10.1</p></td><td style="vertical-align:top;width:2.49%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.9pt;margin:0pt;"><span style="line-height:1.19;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:top;width:87.46%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.9pt;margin:0pt;"><a style="-sec-extract:exhibit;" href="tse-20211021xex10d1.htm"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;text-align:left;">Separation Agreement with Alice Heezen dated October 25, 2021</span></a></p></td></tr><tr><td style="vertical-align:top;width:10.04%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.9pt;margin:0pt;">99.1</p></td><td style="vertical-align:top;width:2.49%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.9pt;margin:0pt;"><span style="line-height:1.19;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:top;width:87.46%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.9pt;margin:0pt;"><a style="-sec-extract:exhibit;" href="tse-20211021xex99d1.htm"><span style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:normal;font-weight:normal;text-align:left;">Press Release dated October 27, 2021</span></a></p></td></tr><tr><td style="vertical-align:top;width:10.04%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.9pt;margin:0pt;">104</p></td><td style="vertical-align:top;width:2.49%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.9pt;margin:0pt;"><span style="line-height:1.19;visibility:hidden;">&#8203;</span></p></td><td style="vertical-align:top;width:87.46%;margin:0pt;padding:0pt 5.4pt 0pt 5.4pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.9pt;margin:0pt;">Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101)</p></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.37;margin:0pt 0pt 10pt 0pt;"><span style="line-height:1.19;margin-bottom:0pt;visibility:hidden;">&#8203;</span></p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;page-break-after:always;width:88.24%;border:0;margin:30pt 5.88% 30pt 5.88%;"></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;"><a id="_501e363e_030a_438b_b121_c13aa88ba547"></a><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt 0pt 6pt 0pt;"><b style="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;">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 undersigned hereunto duly authorized.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;text-align:center;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><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%;"><tr><td style="vertical-align:bottom;width:51.41%;margin:0pt;padding:0pt;"></td><td colspan="2" style="vertical-align:bottom;width:48.58%;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-weight:bold;">TRINSEO PLC</b></p></td></tr><tr><td style="vertical-align:bottom;width:51.41%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:7.72%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:40.86%;margin:0pt;padding:0pt;"></td></tr><tr><td style="vertical-align:bottom;width:51.41%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:7.72%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:40.86%;margin:0pt;padding:0pt;"></td></tr><tr><td style="vertical-align:bottom;width:51.41%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:7.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">By:</p></td><td style="vertical-align:bottom;width:40.86%;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;">/s/ Angelo N. Chaclas</p></td></tr><tr><td style="vertical-align:bottom;width:51.41%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:7.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Name:</p></td><td style="vertical-align:bottom;width:40.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Angelo N. Chaclas</p></td></tr><tr><td style="vertical-align:bottom;width:51.41%;margin:0pt;padding:0pt;"></td><td style="vertical-align:top;width:7.72%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Title:</p></td><td style="vertical-align:bottom;width:40.86%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;">Senior Vice President, Chief Legal Officer,<br />Chief Compliance Officer &amp; Corporate Secretary</p></td></tr><tr style="height:17.1pt;"><td style="vertical-align:bottom;width:51.41%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:7.72%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:40.86%;margin:0pt;padding:0pt;"></td></tr><tr><td style="vertical-align:bottom;width:51.41%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="white-space:pre-wrap;">Date:  October 27, 2021</span></p></td><td style="vertical-align:bottom;width:7.72%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:40.86%;margin:0pt;padding:0pt;"></td></tr><tr><td style="vertical-align:bottom;width:51.41%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:7.72%;margin:0pt;padding:0pt;"></td><td style="vertical-align:bottom;width:40.86%;margin:0pt;padding:0pt;"></td></tr></table><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="font-size:1pt;visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.19;margin:0pt;"><span style="visibility:hidden;">&#8203;</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;line-height:1.37;margin:0pt 0pt 10pt 0pt;"><span style="line-height:1.19;margin-bottom:0pt;visibility:hidden;">&#8203;</span></p></div></div>
<div style="background-color:#000000;clear:both;height:2pt;margin-left:5.88%;margin-right:5.88%;margin-top:30pt;page-break-after:avoid;width:88.24%;border:0;"></div></body></html>
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{"company-data": {"conformed-name": "Trinseo PLC", "cik": "0001519061", "assigned-sic": "2821", "irs-number": "000000000", "state-of-incorporation": "L2", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-36473", "film-number": "211351187"}, "business-address": {"street1": "1000 CHESTERBROOK BOULEVARD", "street2": "SUITE 3000", "city": "BERWYN", "state": "PA", "zip": "19312", "phone": "610-240-3200"}, "mail-address": {"street1": "1000 CHESTERBROOK BOULEVARD", "street2": "SUITE 3000", "city": "BERWYN", "state": "PA", "zip": "19312"}, "former-company": [{"former-conformed-name": "Trinseo S.A.", "date-changed": "20110429"}, {"former-conformed-name": "Bain Capital Everest (Luxco 2) S.a r.l.", "date-changed": "20110426"}]}
​
​
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
​
FORM
8-K
​
CURRENT REPORT
Pursuant to Section 13 or 15(d)
of The Securities Exchange Act of 1934
​
Date of Report (Date of earliest event reported):
October 21, 2021
​
Trinseo PLC
(Exact name of registrant as specified in its charter)
​
​
​
​
​
​
Ireland
​
001-36473
​
N/A
(State or other jurisdiction
of incorporation or organization)
​
(Commission
File Number)
​
(I.R.S. Employer
Identification Number)
​
1000 Chesterbrook Boulevard
,
Suite 300
,
Berwyn
,
Pennsylvania
19312
(Address of principal executive offices, including zip code)
​
(
610
)
240-3200
(Telephone number, including area code)
​
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):
​
☐
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
​
Emerging growth company
☐
​
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
☐
Securities registered pursuant to Section 12(b) of the Act:
​
​
​
Title of Each Class
Trading symbol(s)
Name of Each Exchange on which registered
Ordinary Shares, par value $0.01 per share
TSE
New York Stock Exchange
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ITEM 5.02  Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers
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(b) Departure of Certain Officers
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On October 27, 2021, Trinseo PLC (the "Company") announced that Alice Heezen, the Company's Senior Vice President, Human Resources is leaving the Company to pursue other opportunities.  Effective as of November 29, 2021, Paula M. Cooney, will join the Company as Senior Vice President, Chief Human Resources Officer.  Ms. Heezen will serve in an advisory capacity for a period following her termination.
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(e) Compensatory Arrangements of Certain Officers
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On October 25, 2021, in connection with her termination, Ms. Heezen entered into a separation agreement with the Company's subsidiary, Trinseo Europe GmbH, pursuant to which Ms. Heezen will continue to receive her base salary through the end of her remaining employment period, and will be eligible to receive the full amount of her 2021 annual cash bonus based on the Company's actual performance, and with her individual performance goal achievement set at target. Ms. Heezen will also receive continued health and welfare benefits as provided in her employment contract or required by local law. The foregoing summary of the agreement with Ms. Heezen is supplemented and qualified in all respects by reference to the full terms of the agreement, a copy of which is attached hereto as Exhibit 10.1 and incorporated by reference. A copy of the Company's press release announcing the departure of Ms. Heezen is attached hereto as Exhibit 99.1 and incorporated herein by reference.
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ITEM 9.01
Exhibits
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10.1
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Separation Agreement with Alice Heezen dated October 25, 2021
99.1
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Press Release dated October 27, 2021
104
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Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101)
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SIGNATURE
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 undersigned hereunto duly authorized.
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TRINSEO PLC
By:
/s/ Angelo N. Chaclas
Name:
Angelo N. Chaclas
Title:
Senior Vice President, Chief Legal Officer,
Chief Compliance Officer & Corporate Secretary
Date:  October 27, 2021
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