21 insiders reported 94 Form 4 transactions for Trinseo PLC (TSE) over the past 18 months (most recent 2026-05-14). Recent activity: ALVARADO JOSEPH (Director) Sell 42,484 shares, FARRELL MATTHEW (Director) Sell 42,484 shares, COTE JEFFREY J (Director) Sell 42,484 shares, STEINMETZ HENRI (Director) Sell 42,484 shares, LIN SANDRA BEACH (Director) Sell 42,484 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-14 | ALVARADO JOSEPH | Director | Sell | 42,484 | $0 |
| 2026-05-14 | FARRELL MATTHEW | Director | Sell | 42,484 | $0 |
| 2026-05-14 | COTE JEFFREY J | Director | Sell | 42,484 | $0 |
| 2026-05-14 | STEINMETZ HENRI | Director | Sell | 42,484 | $0 |
| 2026-05-14 | LIN SANDRA BEACH | Director | Sell | 42,484 | $0 |
| 2026-05-14 | Johnson KLynne | Director | Sell | 42,484 | $0 |
| 2026-05-14 | Desmond Jeanmarie F. | Director | Sell | 42,484 | $0 |
| 2026-05-14 | Brifo Victoria | Director | Sell | 42,484 | $0 |
| 2026-03-03 | BOZICH FRANK A | CEO AND PRESIDENT | Sell | 23,680 | $5,446 |
| 2026-03-03 | Cooney Paula M. | SVP, CHRO | Sell | 7,670 | $1,764 |
| 2026-03-03 | van Kessel Bregje | SVP, Corporate Finance & IR | Sell | 6,064 | $1,395 |
| 2026-03-03 | Yang Arthas Bing | SVP, Latex Binders | Sell | 2,548 | $586 |
| 2026-03-03 | Chaclas Angelo N. | SVP, CLO, CCO & CORP. SEC. | Sell | 7,607 | $1,750 |
| 2026-03-03 | Schewe Rainer | SVP, SUPPLY CHAIN & MFG SVCS | Sell | 4,028 | $926 |
| 2026-03-03 | Stasse David Phillip | EVP AND CFO | Sell | 10,366 | $2,384 |
| 2026-03-03 | Hendriks Han | SVP, CHIEF TECHNOLOGY OFFICER | Sell | 7,707 | $1,773 |
| 2026-03-03 | Reverberi Francesca | SVP, EM and Polymer Solutions | Sell | 1,385 | $319 |
| 2026-03-03 | Greene Roger | VP, GLOBAL CONTROLLER & PAO | Sell | 2,517 | $579 |
| 2026-02-24 | Chaclas Angelo N. | SVP, CLO, CCO & CORP. SEC. | Sell | 3,690 | $1,218 |
| 2026-02-24 | Chaclas Angelo N. | SVP, CLO, CCO & CORP. SEC. | Sell | 7,098 | $2,342 |
| 2026-02-24 | Hendriks Han | SVP, CHIEF TECHNOLOGY OFFICER | Sell | 6,331 | $2,089 |
| 2026-02-24 | Hendriks Han | SVP, CHIEF TECHNOLOGY OFFICER | Sell | 2,291 | $756 |
| 2026-02-24 | Yang Arthas Bing | SVP, Latex Binders | Sell | 1,898 | $626 |
| 2026-02-24 | Yang Arthas Bing | SVP, Latex Binders | Sell | 547 | $181 |
| 2026-02-24 | Greene Roger | VP, GLOBAL CONTROLLER & PAO | Sell | 2,238 | $739 |
Source: SEC Form 4 filings · as of 2026-05-14