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.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026
- 0
- 13F valueReported value at the end of Q2 2026
- $0
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding TSEOQ, Q2 2026
No superinvestor reported holding TSEOQ at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by Trinseo PLC insiders from Form 4, newest first.
| 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 |
Top 10 13F holders, Q2 2026
The largest institutional positions in Trinseo PLC at the end of Q2 2026; share changes are against Q1 2026.
No institution reported holding TSEOQ in 13F filings for Q2 2026.