Schewe Rainer 4

What Happened
Rainer Schewe, SVP, Supply Chain & Manufacturing Services at Trinseo PLC, had a total of 5,113 shares withheld to satisfy tax obligations following the vesting of previously granted restricted stock units (RSUs). The withholding occurred in two parts: 3,907 shares on 2026-02-21 and 1,206 shares on 2026-02-22, each at $0.33 per share, yielding cash values of approximately $1,280 and $395 respectively (total ~ $1,675). This was a tax-withholding (routine) disposition, not an open-market sale or purchase.

Key Details

• Transaction dates and prices: 2026-02-21 — 3,907 shares @ $0.33; 2026-02-22 — 1,206 shares @ $0.33.
• Total shares withheld: 5,113; total reported value ≈ $1,675.
• Shares owned after transaction: not reported in the provided filing.
• Footnote: F1 — shares withheld by the Company to pay taxes due following vesting of RSUs.
• Filing: Form 4 filed 2026-02-24 (period of report: 2026-02-21). No late-filing flag supplied in the provided data.

Context
This was a cashless tax-withholding related to RSU vesting (code F), a common administrative transaction that does not necessarily indicate the insider’s market view. Such withholdings reduce the insider’s share count to cover tax liabilities and are routine for equity compensation.