February 22, 2026 · Form 4 insider transaction
van Kessel Bregje sold 1,335 shares of Trinseo Corp at $0.33 per share, a transaction worth $437.35. The trade was recorded as shares withheld for taxes and disclosed on an SEC Form 4, filed 2 days after the transaction.
Shares withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units.