BOZICH FRANK A 4

What Happened

• Frank A. Bozich, CEO and President (also a director) of Trinseo plc (TSE), had 32,602 shares withheld by the company on Feb 22, 2026 to cover taxes related to vested restricted stock units. The shares are recorded at $0.33 each for a total value of approximately $10,680. This was a tax-withholding disposition (transaction code F), not an open-market sale.

Key Details

• Transaction date: 2026-02-22; filing date (Form 4): 2026-02-24.
• Shares withheld/disposed: 32,602 at $0.33 per share = $10,680 (reported as "Disposed").
• Footnote F1: Shares were withheld by the company to pay taxes due following the vesting of restricted stock units.
• Shares owned after the transaction: not specified in the provided filing details.
• No late-filing flag indicated in the provided information.

Context

• This is a routine tax-withholding event following RSU vesting (often called a cashless or "net-share settlement"), not a discretionary sale; it typically reflects fulfillment of tax obligations rather than a change in insider sentiment.