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Trinseo PLC

TSEOQ
Exchange
OTC
Industry
Plastic Materials, Synth Resins & Nonvulcan Elastomers
SEC CIK
0001519061

No open-market purchases or sales by Trinseo PLC insiders were filed in the last 90 days; no institution reported holding it in 13F filings for Q2 2026; no superinvestor holds it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Trinseo PLC insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
0 filings
Insiders trading
0
Net value
$0
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Trinseo PLC, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Trinseo PLC
NameTitleLast reported holdingLast filingFilings, past year
Alvarado JosephDirector52,187May 14, 20261
Farrell MatthewDirector207,741May 14, 20261
Cote Jeffrey JDirector45,699May 14, 20261
Steinmetz HenriDirector53,453May 14, 20261
Lin Sandra BeachDirector44,776May 14, 20261
Johnson KLynneDirector48,429May 14, 20261
Desmond Jeanmarie F.Director46,552May 14, 20261
Brifo VictoriaDirector40,741May 14, 20261
Yang Arthas BingSVP, Latex Binders49,457Mar 3, 20262
van Kessel BregjeSVP, Corporate Finance & IR98,296Mar 3, 20262
Schewe RainerSVP, SUPPLY CHAIN & MFG SVCS103,415Mar 3, 20262
Reverberi FrancescaSVP, EM and Polymer Solutions161,250Mar 3, 20262
Hendriks HanSVP, CHIEF TECHNOLOGY OFFICER73,362Mar 3, 20263
Greene RogerVP, GLOBAL CONTROLLER & PAO45,101Mar 3, 20263
Cooney Paula M.SVP, CHRO118,318Mar 3, 20262
Chaclas Angelo N.SVP, CLO, CCO & CORP. SEC.274,798Mar 3, 20262
Stasse David PhillipEVP AND CFO254,788Mar 3, 20262
Bozich Frank ACEO AND PRESIDENT664,689Mar 3, 20262
Frisch JohannaVP AND TREASURER15,898Oct 2, 20251
Tomkins Mark EDirector36,619Jun 24, 20250
De Leener Pierre-MarieDirector36,174Jun 24, 20250
Thomas Timothy JSVP, MFCTG & OPER EXCELLENCE17,737Feb 21, 20240
Ni James MingyuSVP, LATEX BINDERS6,904Feb 21, 20240
Martens Philip RDirector9,414Jul 13, 20230
Misheff Donald TDirector19,654Jul 13, 20230
Skeete Bernard MVP, CAO & Global Controller12,822Feb 28, 20230
Lanning AndreSVP & CCO18,145Feb 28, 20230
Joly NicolasSVP, Styrenics14,928Feb 28, 20230
Beal Jean-LucSVP, Engineered Materials9,254Feb 24, 20230
M&G Investment Management Ltd10% Owner7,625,044IndirectJul 20, 20220
Heezen AliceSVP - Human Resources10,081Nov 16, 20210

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Aug 14, 2025 (view filing)Aug 12-142 daysFarrell MatthewDirectorPPurchase+100.0K$2.40+$240.0K+66.6%250.2K after3 lots
Mar 14, 2025 (view filing)Mar 12-142 daysFrisch JohannaVP AND TREASURERPPurchase+3.80K$4.13+$15.7K+26.6%18.1K after3 lots
Aug 20, 2024 (view filing)Aug 16-194 daysCote Jeffrey JDirectorPPurchase+150.6K$3.00+$452.5KNew position150.6K after2 lots
Aug 14, 2024 (view filing)Aug 131 dayTomkins Mark EDirectorSSale−11.1K$2.54−$28.3K−19.3%46.7K after
Aug 14, 2024 (view filing)Aug 122 daysBozich Frank ACEO AND PRESIDENTPPurchase+40.0K$2.57+$102.8K+9.5%462.2K after
Aug 14, 2024 (view filing)Aug 122 daysChaclas Angelo N.SVP, CLO, CCO & CORP. SEC.PPurchase+75.0K$2.57+$192.8K+56.8%207.0K after
Dec 18, 2023 (view filing)Dec 144 daysFarrell MatthewDirectorPPurchase+50.0K$7.21+$360.5K+169.4%79.5K after
Sep 18, 2023 (view filing)Sep 144 daysStasse David PhillipEVP AND CFOPPurchase+15.0K$8.89+$133.3K+16.6%105.6K after
Sep 13, 2023 (view filing)Sep 13Same dayDesmond Jeanmarie F.DirectorPPurchase+2.50K$7.94+$19.9K+15.0%19.1K after
Sep 13, 2023 (view filing)Sep 121 dayChaclas Angelo N.SVP, CLO, CCO & CORP. SEC.PPurchase+20.0K$8.07+$161.4K+29.2%88.5K after
Sep 13, 2023 (view filing)Sep 121 dayThomas Timothy JSVP, MFCTG & OPER EXCELLENCEPPurchase+3.00K$7.94+$23.8K+20.1%17.9K after
Sep 13, 2023 (view filing)Sep 121 dayBozich Frank ACEO AND PRESIDENTPPurchase+8.00K$8.07+$64.6K+4.3%192.7K after
Nov 18, 2022 (view filing)Nov 162 daysMartens Philip RDirectorSSale−6.90K$24.60−$169.7K−40.1%10.3K after
Sep 9, 2022 (view filing)Sep 7-82 daysDesmond Jeanmarie F.DirectorPPurchase+4.18K$25.15+$105.3K+96.7%8.52K after2 lots
Aug 16, 2022 (view filing)Aug 151 dayCote Jeffrey JDirectorPPurchase+10.0K$31.76+$317.6K+49.7%30.1K after
Jul 20, 2022 (view filing)Jul 191 dayM&G Investment Management Ltd10% OwnerSSale−3.00K$43.51−$130.5K0.0%7.63M after
May 31, 2022 (view filing)May 274 daysSkeete Bernard MVP, CAO and Global ControllerSSale−944$46.99−$44.4K−9.6%8.90K after
May 26, 2022 (view filing)May 251 dayBozich Frank ACEO and PresidentSSale−21.0K$43.61−$913.9K−14.0%128.2K after
Apr 8, 2022 (view filing)Apr 62 daysBozich Frank ACEO and PresidentSSale−21.0K$45.96−$963.2K−14.0%128.2K after
Mar 16, 2022 (view filing)Mar 142 daysAlvarado JosephDirectorPPurchase+1.00K$46.94+$46.9K+7.3%14.6K after
Mar 9, 2022 (view filing)Mar 9Same dayBozich Frank ACEO and PresidentSSale−12.0K$48.13−$577.6K−8.6%128.2K after
Feb 16, 2022 (view filing)Feb 151 dayM&G Investment Management Ltd10% OwnerSSale−3.00K$57.57−$172.7K0.0%7.63M after
Feb 14, 2022 (view filing)Feb 113 daysM&G Investment Management Ltd10% OwnerSSale−3.00K$58.76−$176.3K0.0%7.63M after
Feb 4, 2022 (view filing)Feb 22 daysBozich Frank ACEO and PresidentSSale−21.0K$53.89−$1.13M−15.5%114.4K after
Jan 7, 2022 (view filing)Jan 52 daysBozich Frank ACEO and PresidentSSale−21.0K$56.62−$1.19M−15.5%114.4K after
Nov 16, 2021 (view filing)Nov 124 daysHeezen AliceSVP - Human ResourcesSSale−13.5K$57.77−$782.5K−57.3%10.1K after2 lots
Sep 17, 2021 (view filing)Sep 152 daysFarrell MatthewDirectorPPurchase+5.00K$48.53+$242.7K+35.1%19.3K after