Anthony P. J. Smurfit - 18 Dec 2025 Form 4 Insider Report for Smurfit Westrock plc (SW)

Role: President and Group CEO, Director
Signature: /s/ Ciara O'Riordan, attorney-in-fact for Anthony PJ Smurfit
Issuer symbol: SW
Transactions as of: 18 Dec 2025
Net transactions value: $0
Form type: 4
Filing time: 19 Dec 2025, 13:15:26 UTC
Previous filing: 22 Sep 2025
Next filing: 17 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
SMURFIT ANTHONY P J	President and Group CEO, Director	BEECH HILL, CLONSKEAGH, DUBLIN, IRELAND	/s/ Ciara O'Riordan, attorney-in-fact for Anthony PJ Smurfit	19 Dec 2025	0001133264

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SW	Ordinary Shares	Award	$0	+734	+0.05%	$0.000000	1,570,137	18 Dec 2025	Direct	F1, F2
holding	SW	Ordinary Shares						1,000	18 Dec 2025	See footnote	F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	SW	Restricted Stock Units (PSP)	Award	$0	+2,023	+1.1%	$0.000000	183,480	18 Dec 2025	Ordinary Shares	2,023		Direct	F1, F4

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

Explanation of Responses:

Id	Content
F1	In accordance with the terms of the 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.
F2	Includes 66,592 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.
F3	These shares are held by the Reporting Person's child who is part of the Reporting Person's household. The Reporting Person disclaims ownership of the shares held by this child, and this report is not an admission that the Reporting Person is the beneficial owner of these shares for the purposes of Section 16 or for any other purposes.
F4	The 183,480 restricted stock units vest and are settled as follows:(i) 100,484 restricted stock units in February 2026, (ii) and 82,996 restricted stock units in February 2027.