List of insiders holdings for Trinseo PLC:
  1. Shares directly owned by the insider.
  2. Shares indirectly owned by the insider.
  3. Total shares owned by the insider (sum of shares directly and indirectly owned).
  4. Total market value if available.
  5. Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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Insider Holder NameReport
Date Time		Shares Owned
Directly
Indirectly		Total
Shares Owned		Filing
Chu Brian
Director
10% Owner		2015-06-29 17:51:133236
37,269,567		37,272,803Form 4
Meisel Seth
Director
10% Owner		2015-06-29 18:00:363236
37,269,567		37,272,803Form 4
Hauser Felix
Director
10% Owner		2016-08-16 16:14:331897
10,669,567		10,671,464Form 4
Vasseur Aurelien
Director
10% Owner		2016-08-16 16:15:540
10,669,567		10,669,567Form 4
M&G INVESTMENT MANAGEMENT LTD
10% Owner		2022-08-12 13:40:167,625,044
0		7,625,044Form 13D
BOZICH FRANK A
CEO and President		2023-03-13 18:53:04192,653
0		192,653Form 4
Pappas Christopher D
Director		2020-06-19 14:07:38153,887
0		153,887Form 4
Niziolek Barry J
EVP & Chief Financial Officer		2019-02-28 20:46:2294,733
0		94,733Form 4
Stasse David Phillip
EVP and CFO		2023-03-13 18:58:2790,552
0		90,552Form 4
Horner Marilyn N
SVP - Human Resources		2018-03-08 18:16:3986,801
0		86,801Form 4
Yarkadas Hayati
SVP & Business President		2019-02-28 20:58:3178,113
0		78,113Form 4
Stedman Timothy M
See remarks		2020-02-27 16:44:2771,777
0		71,777Form 4
FEENAN JOHN A
See Remarks		2015-03-03 21:32:1169,314
0		69,314Form 4
Chaclas Angelo N.
SVP, CLO, CCO & Corp. Sec		2023-03-13 18:55:1568,508
0		68,508Form 4
Schewe Rainer
SVP, Supply Chain Services		2023-02-24 18:03:4237,937
0		37,937Form 4
Denton E. Jeffery
VP - Supply Chain Services		2020-02-27 16:51:0636,586
0		36,586Form 4
ZIDE STEPHEN M
Director		2020-06-19 14:06:4936,281
0		36,281Form 4
Cooney Paula M.
SVP & CHRO		2023-02-24 17:50:4035,176
0		35,176Form 4
COTE JEFFREY J
Director		2022-08-16 12:30:0530,117
0		30,117Form 4
STEINMETZ HENRI
Director		2022-06-22 16:27:0129,382
0		29,382Form 4
Pugh Martin
See Remarks		2017-03-03 15:06:4527,729
0		27,729Form 4
Hendriks Han
Chief Technology Officer		2023-02-24 17:54:0827,139
0		27,139Form 4
HEEZEN ALICE
SVP - Human Resources		2021-11-16 16:03:2525,650
0		25,650Form 4
Keenan Catherine C.
See Remarks		2020-02-27 16:49:4224,042
0		24,042Form 4
FARRELL MATTHEW
Director		2022-06-22 16:24:0621,358
0		21,358Form 4
Reverberi Francesca
SVP & CSO		2023-02-28 17:29:3221,128
0		21,128Form 4
Misheff Donald T
Director		2022-06-22 16:25:5620,553
0		20,553Form 4
Lanning Andre
SVP & CCO		2023-02-28 17:25:5618,145
0		18,145Form 4
Beal Jean-Luc
SVP, Engineered Materials		2023-02-24 17:27:0218,133
0		18,133Form 4
Schmitz Rudiger
VP, Latex Binders		2020-05-08 15:15:1617,203
0		17,203Form 3
ALVARADO JOSEPH
Director		2022-06-22 16:16:1816,695
0		16,695Form 4
Ni James Mingyu
SVP, Latex Binders		2023-02-24 17:59:2515,981
0		15,981Form 4
Thomas Timothy J
SVP		2023-03-13 18:59:3114,945
0		14,945Form 4
Joly Nicolas
SVP, Styrenics		2023-02-28 16:55:1714,928
0		14,928Form 4
Leib Ryan J
Vice President and Treasurer		2021-03-01 16:11:0713,764
0		13,764Form 4
Johnson KLynne
Director		2022-06-22 16:24:3913,135
0		13,135Form 4
Skeete Bernard M
VP, CAO & Global Controller		2023-02-28 17:32:3012,822
0		12,822Form 4
De Leener Pierre-Marie
Director		2022-06-22 16:22:2312,103
0		12,103Form 4
TOMKINS MARK E
Director		2022-06-22 16:27:5312,085
0		12,085Form 4
MARTENS PHILIP R
Director		2022-11-18 16:23:1210,300
0		10,300Form 4
van Kessel Bregje
SVP, Plastic Solutions		2023-02-28 17:31:289618
0		9618Form 4
LIN SANDRA BEACH
Director		2022-06-22 16:16:539299
0		9299Form 4
Desmond Jeanmarie F.
Director		2022-09-09 11:52:128515
0		8515Form 4
Frisch Johanna
VP and Treasurer		2023-02-28 17:28:306598
0		6598Form 4
Plantevin Michel
Director
10% Owner		2016-09-27 16:53:474485
0		4485Form 4
Brifo Victoria
Director		2022-06-22 16:17:504358
0		4358Form 4
Thomas Stephen F.
Director
10% Owner		2016-09-27 16:52:271897
0		1897Form 4
Levi Marco
See Remarks		2014-06-11 18:37:160
0		0Form 3
Krecke Jeannot
Director		2017-03-09 17:29:050
0		0Form 3
BAIN CAPITAL INVESTORS LLC
BCIP Trust Associates IV-B L.P.
10% Owner		2016-09-27 16:56:250
0		0Form 4
BAIN CAPITAL INVESTORS LLC
Bain Capital Everest Manager Holding SCA
Bain Capital Everest Manager S.a.r.l.
Bain Capital Europe Fund III L.P.
Bain Capital Partners Europe III L.P.
Bain Capital Fund X LP
Bain Capital Partners X L.P.
BCIP Associates IV L.P.
BCIP Associates IV-B L.P.
BCIP Trust Associates IV L.P.
10% Owner		2017-02-14 16:22:160
0		0Form 13G
Springham Ruth
Director
10% Owner		2016-09-27 16:50:390
0		0Form 4
SHAW CURTIS S
See Remarks		2014-06-11 18:51:370
0		0Form 3