Ben Garren) - 11 Mar 2026 Form 4 Insider Report for Smurfit Westrock plc (SW)

Role: Executive Vice President and Group General Counsel
Signature: /s/ Ciara O'Riordan (attorney-in-fact for Ben Garren)
Issuer symbol: SW
Transactions as of: 11 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 13 Mar 2026, 12:47:15 UTC
Previous filing: 19 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Garren Ben	Executive Vice President and Group General Counsel	BEECH HILL, CLONSKEAGH, DUBLIN 4, IRELAND	/s/ Ciara O'Riordan (attorney-in-fact for Ben Garren)	13 Mar 2026	0002030058

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SW	Ordinary Shares	Award		+7,701	+100%	$0.000000^*	15,394	11 Mar 2026	Direct	F1
transaction	SW	Ordinary Shares	Tax liability		-758	-4.9%	$42.20^*	14,636	12 Mar 2026	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On March 11, 2026, the reporting person was granted 7,701 restricted stock units (RSUs). Each RSU represents a contingent right to receive one Ordinary Share. The RSUs are scheduled to vest in three equal annual installments beginning on the first anniversary of the grant date.
F2	Reflects ordinary shares of Smurfit Westrock plc withheld to satisfy the Reporting Person's tax withholding obligation upon vesting and settlement of their restricted stock units.

Remarks:

Executive Vice President and Group General Counsel