X0508 4 2025-06-18 0002005951 Smurfit Westrock plc SW 0002053658 Henao Alvaro BEECH HILL CLONSKEAGH DUBLIN 4 L2 D04 N2R2 IRELAND 0 1 0 0 see remarks 0 Ordinary Shares 2025-06-18 4 A 0 48 0 A 49144 D Restricted Stock Units (PSP) 2025-06-18 4 A 0 366 0 A Ordinary Shares 366 36492 D In accordance with the terms of the applicable outstanding restricted stock unit award, additional restricted stock units accrued as dividend equivalents in connection with the Issuer's payment of a quarterly dividend of $0.4308 per ordinary share. Such additional restricted stock units are subject to the same terms and conditions as the underlying award. Each restricted stock unit represents the right to receive one ordinary share. Includes 4,783 restricted stock units which are scheduled to vest in three equal annual installments beginning on March 11, 2026, the first anniversary of the grant date. The 36,492 restricted stock units vest and are settled as follows:(i) 17,834 restricted stock units in February 2026, (ii) and 18,658 restricted stock units in February 2027. President and Chief Executive Officer, LATAM /s/ Ciara O'Riordan, attorney-in-fact for Alvaro Henao 2025-06-23