Yang Arthas Bing 4

What Happened

• Yang Arthas Bing, Senior Vice President, Latex Binders at Trinseo PLC, had company shares withheld to cover taxes after restricted stock units (RSUs) vested. On 2026-02-21, 1,898 shares were withheld at $0.33 each for $622; on 2026-02-22, 547 shares were withheld at $0.33 each for $179. Total withheld: 2,445 shares for approximately $801.
• This was not an open-market sale by the insider but a routine tax-withholding disposition (transaction code F).

Key Details

• Transaction dates and amounts:
  • 2026-02-21: 1,898 shares @ $0.33 = $622 (withheld for taxes)
  • 2026-02-22: 547 shares @ $0.33 = $179 (withheld for taxes)
• Shares owned after the transactions: not disclosed in this filing.
• Footnote: F1 — shares were withheld by the Company to pay taxes due following the vesting of previously granted restricted stock units.
• Filing: Form 4 filed 2026-02-24 reporting transactions on 2026-02-21 and 02-22; this filing date appears timely.

Context

• These withholding transactions are a common administrative step when RSUs vest: the company retains (or “withholds”) a portion of shares to satisfy tax obligations rather than the insider selling shares on the open market.
• Such tax-withholding dispositions are routine and do not necessarily indicate a change in the insider’s view of the company.