FergusonMchugh MaryLynn 4

What Happened

• MaryLynn FergusonMchugh, a director of Smurfit Westrock plc (SW), was granted 4,438 restricted stock units (RSUs) on 2026-05-01 (reported on Form 4). The grant is reported at $0.00 per unit (RSUs are a contingent right to receive one ordinary share each).
• Also on 2026-05-01, 2,123 ordinary shares were withheld (disposed) at a reported price of $38.39 per share to satisfy tax withholding obligations related to RSU vesting/settlement — a withholding value of approximately $81,502.

Key Details

• Transaction dates and prices: Grant of 4,438 RSUs on 2026-05-01 (A, $0.00); withholding of 2,123 shares on 2026-05-01 (F, $38.39 per share, ~$81,502 total).
• Shares owned after the transactions: Not specified in the provided filing information.
• Footnotes: F1 — the RSUs vest on the earlier of the first anniversary of the grant or the next annual meeting. F2 — the 2,123-share disposition reflects shares withheld to satisfy tax withholding upon vesting/settlement of RSUs.
• Filing timeliness: Reported on 2026-05-05 for transactions on 2026-05-01; filing appears timely under Form 4 reporting rules.

Context

• RSUs are a grant of future shares contingent on vesting; the initial grant itself is not an open-market purchase or sale. The reported 2,123-share disposition is a routine tax-withholding action (not an open-market sale for cash), commonly used to cover tax liabilities when RSUs vest and shares are delivered.
• This filing documents compensation-related equity (an award) and related withholding — factual disclosure for investors rather than a direct signal of directional insider buying or selling sentiment.