COTE JEFFREY J 4

What Happened

• Jeffrey J. Cote, a director of Trinseo PLC, recorded a disposition on May 12, 2026: the forfeiture of 42,484 restricted stock units (RSUs). The filing shows no price or cash proceeds (N/A) because this was a voluntary forfeiture of unvested awards rather than an open‑market sale.
• The RSUs were originally granted on June 25, 2025 and, per the filing, were not vested or settled at the time they were forfeited (footnote F1).

Key Details

• Transaction date: 2026-05-12; Form 4 filed: 2026-05-14 (timely filing within the usual two-business-day window).
• Transaction code: J — “other acquisition or disposition” (used here for forfeiture of unvested RSUs).
• Shares disposed: 42,484 RSUs; price/proceeds: N/A (forfeiture, no cash).
• Shares owned after transaction: Not specified in the excerpted filing (the Form 4 did not disclose total post-transaction holdings here).
• Notable footnotes:
  • F1: Voluntary forfeiture of RSUs granted June 25, 2025; awards were unvested at forfeiture.
  • F2: Some shares referenced elsewhere in the filing are held in an irrevocable indenture trust for the benefit of the reporting person and children (the “Cote 2019 Irrevocable Indenture Trust”).

Context

• This was a forfeiture of unvested equity and not an open-market sale, so it does not reflect proceeds or a trading decision in the market. For retail investors, forfeitures are typically administrative or contractual outcomes related to award terms and do not necessarily signal insider sentiment about the company.