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.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Alvarado Joseph | Director | 52,187 | May 14, 2026 | 1 |
| Farrell Matthew | Director | 207,741 | May 14, 2026 | 1 |
| Cote Jeffrey J | Director | 45,699 | May 14, 2026 | 1 |
| Steinmetz Henri | Director | 53,453 | May 14, 2026 | 1 |
| Lin Sandra Beach | Director | 44,776 | May 14, 2026 | 1 |
| Johnson KLynne | Director | 48,429 | May 14, 2026 | 1 |
| Desmond Jeanmarie F. | Director | 46,552 | May 14, 2026 | 1 |
| Brifo Victoria | Director | 40,741 | May 14, 2026 | 1 |
| Yang Arthas Bing | SVP, Latex Binders | 49,457 | Mar 3, 2026 | 2 |
| van Kessel Bregje | SVP, Corporate Finance & IR | 98,296 | Mar 3, 2026 | 2 |
| Schewe Rainer | SVP, SUPPLY CHAIN & MFG SVCS | 103,415 | Mar 3, 2026 | 2 |
| Reverberi Francesca | SVP, EM and Polymer Solutions | 161,250 | Mar 3, 2026 | 2 |
| Hendriks Han | SVP, CHIEF TECHNOLOGY OFFICER | 73,362 | Mar 3, 2026 | 3 |
| Greene Roger | VP, GLOBAL CONTROLLER & PAO | 45,101 | Mar 3, 2026 | 3 |
| Cooney Paula M. | SVP, CHRO | 118,318 | Mar 3, 2026 | 2 |
| Chaclas Angelo N. | SVP, CLO, CCO & CORP. SEC. | 274,798 | Mar 3, 2026 | 2 |
| Stasse David Phillip | EVP AND CFO | 254,788 | Mar 3, 2026 | 2 |
| Bozich Frank A | CEO AND PRESIDENT | 664,689 | Mar 3, 2026 | 2 |
| Frisch Johanna | VP AND TREASURER | 15,898 | Oct 2, 2025 | 1 |
| Tomkins Mark E | Director | 36,619 | Jun 24, 2025 | 0 |
| De Leener Pierre-Marie | Director | 36,174 | Jun 24, 2025 | 0 |
| Thomas Timothy J | SVP, MFCTG & OPER EXCELLENCE | 17,737 | Feb 21, 2024 | 0 |
| Ni James Mingyu | SVP, LATEX BINDERS | 6,904 | Feb 21, 2024 | 0 |
| Martens Philip R | Director | 9,414 | Jul 13, 2023 | 0 |
| Misheff Donald T | Director | 19,654 | Jul 13, 2023 | 0 |
| Skeete Bernard M | VP, CAO & Global Controller | 12,822 | Feb 28, 2023 | 0 |
| Lanning Andre | SVP & CCO | 18,145 | Feb 28, 2023 | 0 |
| Joly Nicolas | SVP, Styrenics | 14,928 | Feb 28, 2023 | 0 |
| Beal Jean-Luc | SVP, Engineered Materials | 9,254 | Feb 24, 2023 | 0 |
| M&G Investment Management Ltd | 10% Owner | 7,625,044Indirect | Jul 20, 2022 | 0 |
| Heezen Alice | SVP - Human Resources | 10,081 | Nov 16, 2021 | 0 |
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.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 14, 2025 (view filing) | Aug 12-14 | 2 days | Farrell MatthewDirector | PPurchase | +100.0K | $2.40 | +$240.0K | +66.6%250.2K after | 3 lots |
| Mar 14, 2025 (view filing) | Mar 12-14 | 2 days | Frisch JohannaVP AND TREASURER | PPurchase | +3.80K | $4.13 | +$15.7K | +26.6%18.1K after | 3 lots |
| Aug 20, 2024 (view filing) | Aug 16-19 | 4 days | Cote Jeffrey JDirector | PPurchase | +150.6K | $3.00 | +$452.5K | New position150.6K after | 2 lots |
| Aug 14, 2024 (view filing) | Aug 13 | 1 day | Tomkins Mark EDirector | SSale | −11.1K | $2.54 | −$28.3K | −19.3%46.7K after | |
| Aug 14, 2024 (view filing) | Aug 12 | 2 days | Bozich Frank ACEO AND PRESIDENT | PPurchase | +40.0K | $2.57 | +$102.8K | +9.5%462.2K after | |
| Aug 14, 2024 (view filing) | Aug 12 | 2 days | Chaclas 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 14 | 4 days | Farrell MatthewDirector | PPurchase | +50.0K | $7.21 | +$360.5K | +169.4%79.5K after | |
| Sep 18, 2023 (view filing) | Sep 14 | 4 days | Stasse David PhillipEVP AND CFO | PPurchase | +15.0K | $8.89 | +$133.3K | +16.6%105.6K after | |
| Sep 13, 2023 (view filing) | Sep 13 | Same day | Desmond Jeanmarie F.Director | PPurchase | +2.50K | $7.94 | +$19.9K | +15.0%19.1K after | |
| Sep 13, 2023 (view filing) | Sep 12 | 1 day | Chaclas 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 12 | 1 day | Thomas Timothy JSVP, MFCTG & OPER EXCELLENCE | PPurchase | +3.00K | $7.94 | +$23.8K | +20.1%17.9K after | |
| Sep 13, 2023 (view filing) | Sep 12 | 1 day | Bozich Frank ACEO AND PRESIDENT | PPurchase | +8.00K | $8.07 | +$64.6K | +4.3%192.7K after | |
| Nov 18, 2022 (view filing) | Nov 16 | 2 days | Martens Philip RDirector | SSale | −6.90K | $24.60 | −$169.7K | −40.1%10.3K after | |
| Sep 9, 2022 (view filing) | Sep 7-8 | 2 days | Desmond Jeanmarie F.Director | PPurchase | +4.18K | $25.15 | +$105.3K | +96.7%8.52K after | 2 lots |
| Aug 16, 2022 (view filing) | Aug 15 | 1 day | Cote Jeffrey JDirector | PPurchase | +10.0K | $31.76 | +$317.6K | +49.7%30.1K after | |
| Jul 20, 2022 (view filing) | Jul 19 | 1 day | M&G Investment Management Ltd10% Owner | SSale | −3.00K | $43.51 | −$130.5K | 0.0%7.63M after | |
| May 31, 2022 (view filing) | May 27 | 4 days | Skeete Bernard MVP, CAO and Global Controller | SSale | −944 | $46.99 | −$44.4K | −9.6%8.90K after | |
| May 26, 2022 (view filing) | May 25 | 1 day | Bozich Frank ACEO and President | SSale | −21.0K | $43.61 | −$913.9K | −14.0%128.2K after | |
| Apr 8, 2022 (view filing) | Apr 6 | 2 days | Bozich Frank ACEO and President | SSale | −21.0K | $45.96 | −$963.2K | −14.0%128.2K after | |
| Mar 16, 2022 (view filing) | Mar 14 | 2 days | Alvarado JosephDirector | PPurchase | +1.00K | $46.94 | +$46.9K | +7.3%14.6K after | |
| Mar 9, 2022 (view filing) | Mar 9 | Same day | Bozich Frank ACEO and President | SSale | −12.0K | $48.13 | −$577.6K | −8.6%128.2K after | |
| Feb 16, 2022 (view filing) | Feb 15 | 1 day | M&G Investment Management Ltd10% Owner | SSale | −3.00K | $57.57 | −$172.7K | 0.0%7.63M after | |
| Feb 14, 2022 (view filing) | Feb 11 | 3 days | M&G Investment Management Ltd10% Owner | SSale | −3.00K | $58.76 | −$176.3K | 0.0%7.63M after | |
| Feb 4, 2022 (view filing) | Feb 2 | 2 days | Bozich Frank ACEO and President | SSale | −21.0K | $53.89 | −$1.13M | −15.5%114.4K after | |
| Jan 7, 2022 (view filing) | Jan 5 | 2 days | Bozich Frank ACEO and President | SSale | −21.0K | $56.62 | −$1.19M | −15.5%114.4K after | |
| Nov 16, 2021 (view filing) | Nov 12 | 4 days | Heezen AliceSVP - Human Resources | SSale | −13.5K | $57.77 | −$782.5K | −57.3%10.1K after | 2 lots |
| Sep 17, 2021 (view filing) | Sep 15 | 2 days | Farrell MatthewDirector | PPurchase | +5.00K | $48.53 | +$242.7K | +35.1%19.3K after |