Insider Transactions Reported by 33 Insiders of Trinseo PLC

Symbol
TSEOF on OTC, TSE on NYSE
Location
Wayne, PA

Insiders trading volume in the past year

Trinseo PLC executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
M&G INVESTMENT MANAGEMENT LTD 10%+ Owner $54,976,567 19 Jul 2022
Jeffrey J. Cote Director $721,733 25 Jun 2025
Matthew Farrell Director $608,046 +$240,028 +65% 12 Aug 2025
Henri Steinmetz Director $267,664 25 Jun 2025
Joseph Alvarado Director $264,132 25 Jun 2025
Klynne Johnson Director $253,647 25 Jun 2025
Jeanmarie F. Desmond Director $248,410 25 Jun 2025
Sandra Beach Lin Director $243,455 25 Jun 2025
Victoria Brifo Director $232,197 25 Jun 2025
Frank A. Bozich CEO AND PRESIDENT, Director $152,878 27 Feb 2026
Misheff Donald T. Director $141,705 14 Jun 2023
Mark E. Tomkins Director $136,588 21 Jun 2025
Pierre-Marie de Leener Director $134,929 21 Jun 2025
Andre Lanning Svp & Cco $130,825 25 Feb 2023
Nicolas Joly SVP, Styrenics $107,631 25 Feb 2023
Bernard M. Skeete VP, CAO & Global Controller $92,447 25 Feb 2023
Timothy J. Thomas Svp, Mfctg & Oper Excellence $84,783 17 Feb 2024
Alice Heezen SVP - Human Resources $72,684 12 Nov 2021
Philip R. Martens Director $67,875 14 Jun 2023
Jean-Luc Beal SVP, Engineered Materials $66,721 22 Feb 2023
Angelo N. Chaclas Svp, Clo, Cco & Corp. Sec. $63,203 27 Feb 2026
David Phillip Stasse Evp And Cfo $58,601 27 Feb 2026
Johanna Frisch Vp And Treasurer $37,360 30 Sep 2025
Francesca Reverberi SVP, EM and Polymer Solutions $37,087 27 Feb 2026
James Mingyu Ni Svp, Latex Binders $33,001 17 Feb 2024
Paula M. Cooney Svp, Chro $27,213 27 Feb 2026
Rainer Schewe Svp, Supply Chain & Mfg Svcs $23,785 27 Feb 2026
Bregje van Kessel SVP, Corporate Finance & IR $22,608 27 Feb 2026
Han Hendriks Svp, Chief Technology Officer $16,873 27 Feb 2026
Arthas Bing Yang SVP, Latex Binders $11,375 27 Feb 2026
Roger Greene Vp, Global Controller & Pao $10,373 27 Feb 2026
Carol Flaton Director 16 Jan 2026
Jill Kathleen Frizzley Director 16 Jan 2026

Recent Insider Transactions by Companies or Individuals for Trinseo PLC

Showing up to 300 most recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
Arthas Bing Yang TSE Ordinary Shares Tax liability -4.9% -2,548 49,457 27 Feb 2026 Direct
Bregje van Kessel TSE Ordinary Shares Tax liability -5.81% -6,064 98,296 27 Feb 2026 Direct
Rainer Schewe TSE Ordinary Shares Tax liability -3.75% -4,028 103,415 27 Feb 2026 Direct
Francesca Reverberi TSE Ordinary Shares Tax liability -0.85% -1,385 161,250 27 Feb 2026 Direct
Han Hendriks TSE Ordinary Shares Tax liability -9.51% -7,707 73,362 27 Feb 2026 Direct
Roger Greene TSE Ordinary Shares Tax liability -5.29% -2,517 45,101 27 Feb 2026 Direct
Paula M. Cooney TSE Ordinary Shares Tax liability -6.09% -7,670 118,318 27 Feb 2026 Direct
Angelo N. Chaclas TSE Ordinary Shares Tax liability -2.69% -7,607 274,798 27 Feb 2026 Direct
David Phillip Stasse TSE Ordinary Shares Tax liability -3.91% -10,366 254,788 27 Feb 2026 Direct
Frank A. Bozich TSE Ordinary Shares Tax liability -3.44% -23,680 664,689 27 Feb 2026 Direct
Francesca Reverberi TSE Ordinary Shares Tax liability -0.2% -333 162,635 22 Feb 2026 Direct
Han Hendriks TSE Ordinary Shares Tax liability -2.75% -2,291 81,069 22 Feb 2026 Direct
Arthas Bing Yang TSE Ordinary Shares Tax liability -1.04% -547 52,005 22 Feb 2026 Direct
Bregje van Kessel TSE Ordinary Shares Tax liability -1.26% -1,335 104,360 22 Feb 2026 Direct
Rainer Schewe TSE Ordinary Shares Tax liability -1.11% -1,206 107,443 22 Feb 2026 Direct
Paula M. Cooney TSE Ordinary Shares Tax liability -2.09% -2,684 125,988 22 Feb 2026 Direct
David Phillip Stasse TSE Ordinary Shares Tax liability -3.52% -9,671 265,154 22 Feb 2026 Direct
Frank A. Bozich TSE Ordinary Shares Tax liability -4.52% -32,602 688,369 22 Feb 2026 Direct
Angelo N. Chaclas TSE Ordinary Shares Tax liability -2.45% -7,098 282,405 22 Feb 2026 Direct
Francesca Reverberi TSE Ordinary Shares Tax liability -0.71% -1,163 162,968 21 Feb 2026 Direct
Han Hendriks TSE Ordinary Shares Tax liability -7.06% -6,331 83,360 21 Feb 2026 Direct
Arthas Bing Yang TSE Ordinary Shares Tax liability -3.49% -1,898 52,552 21 Feb 2026 Direct
Bregje van Kessel TSE Ordinary Shares Tax liability -5.34% -5,963 105,695 21 Feb 2026 Direct
Rainer Schewe TSE Ordinary Shares Tax liability -3.47% -3,907 108,649 21 Feb 2026 Direct
Paula M. Cooney TSE Ordinary Shares Tax liability -5.47% -7,440 128,672 21 Feb 2026 Direct
Roger Greene TSE Ordinary Shares Tax liability -4.49% -2,238 47,618 21 Feb 2026 Direct
David Phillip Stasse TSE Ordinary Shares Tax liability -1.8% -5,028 274,825 21 Feb 2026 Direct
Angelo N. Chaclas TSE Ordinary Shares Tax liability -1.26% -3,690 289,503 21 Feb 2026 Direct
Han Hendriks TSE Ordinary Shares Tax liability -2.25% -2,067 89,691 03 Oct 2025 Direct
Johanna Frisch TSE Ordinary Shares Tax liability -12.1% -2,194 15,898 30 Sep 2025 Direct
Roger Greene TSE Ordinary Shares Tax liability -3.14% -1,617 49,856 25 Sep 2025 Direct
Matthew Farrell TSE Ordinary Shares Purchase 24.1% $118,120 $2.43 48,609 250,225 14 Aug 2025 Direct
Matthew Farrell TSE Ordinary Shares Purchase 15.1% $64,658 $2.45 26,391 201,616 13 Aug 2025 Direct
Matthew Farrell TSE Ordinary Shares Purchase 16.6% $57,250 $2.29 25,000 175,225 12 Aug 2025 Direct
Joseph Alvarado TSE Ordinary Shares Award 81.4% 42,484 94,671 25 Jun 2025 Direct
Sandra Beach Lin TSE Ordinary Shares Award 94.9% 42,484 87,260 25 Jun 2025 Direct
Victoria Brifo TSE Ordinary Shares Award 104.3% 42,484 83,225 25 Jun 2025 Direct
Jeffrey J. Cote TSE Ordinary Shares Award 93% 42,484 88,183 25 Jun 2025 Direct
Jeanmarie F. Desmond TSE Ordinary Shares Award 91.3% 42,484 89,036 25 Jun 2025 Direct
Matthew Farrell TSE Ordinary Shares Award 39.4% 42,484 150,225 25 Jun 2025 Direct
Klynne Johnson TSE Ordinary Shares Award 87.7% 42,484 90,913 25 Jun 2025 Direct
Henri Steinmetz TSE Ordinary Shares Award 79.5% 42,484 95,937 25 Jun 2025 Direct
Jeffrey J. Cote TSE Ordinary Shares Tax liability -18.4% -10,310 45,699 21 Jun 2025 Direct
Mark E. Tomkins TSE Ordinary Shares Tax liability -21.6% -10,105 36,619 21 Jun 2025 Direct
Henri Steinmetz TSE Ordinary Shares Tax liability -27.2% -20,001 53,453 21 Jun 2025 Direct
Sandra Beach Lin TSE Ordinary Shares Tax liability -18.7% -10,310 44,776 21 Jun 2025 Direct
Matthew Farrell TSE Ordinary Shares Tax liability -8.16% -9,576 107,741 21 Jun 2025 Direct
Pierre-Marie de Leener TSE Ordinary Shares Tax liability -35.6% -20,001 36,174 21 Jun 2025 Direct
Victoria Brifo TSE Ordinary Shares Tax liability -19% -9,576 40,741 21 Jun 2025 Direct
Klynne Johnson TSE Ordinary Shares Tax liability -17.8% -10,474 48,429 21 Jun 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.