X0508 4 2025-02-14 0002005951 Smurfit Westrock plc SW 0002026939 Bowles Ken BEECH HILL CLONSKEAGH DUBLIN 4 L2 D04N2R2 IRELAND 1 1 0 0 See Remarks 0 Ordinary Shares 2025-02-14 4 M 0 39740 0 A 151198 D Ordinary Shares 2025-02-14 4 M 0 10836 0 A 162034 D Ordinary Shares 2025-02-14 4 F 0 26351 54.65 D 135683 D Restricted Stock Units (PSP) 0 2025-02-14 4 M 0 39740 0 D Ordinary Shares 39740 88731 D Restricted Stock Units (DBP) 0 2025-02-14 4 M 0 10836 0 D Ordinary Shares 10836 28216 D Reflects the acquisition of common stock upon vesting and settlement of performance share plan awards. Each performance share plan award represents a right to receive one ordinary share of Smurfit Westrock plc upon vesting and settlement of the applicable award. Reflects the acquisition of common stock upon vesting and settlement of deferred bonus plan awards. Each deferred bonus plan award represents a right to receive one ordinary share of Smurfit Westrock plc upon vesting and settlement of the applicable award. Reflects ordinary shares of Smurfit Westrock plc withheld to satisfy the reporting persons tax withholding obligation upon vesting and settlement of deferred bonus plan awards and performance share plan awards. Reflects the vesting and settlement of deferred bonus plan awards granted on 28 March 2022 and performance share plan awards granted on 28 March 2022. Executive Vice President and Group Chief Financial Officer /s/ Ciara O'Riordan, attorney-in-fact for Ken Bowles 2025-02-18