Carole Lynnette Brown - 18 Dec 2025 Form 4 Insider Report for Smurfit Westrock plc (SW)

Role: Director
Signature: /s/ Ciara O'Riordan, attorney-in-fact-pursuant for Carole Lynnette Brown
Issuer symbol: SW
Transactions as of: 18 Dec 2025
Net transactions value: $0
Form type: 4
Filing time: 19 Dec 2025, 11:58:59 UTC
Previous filing: 22 Sep 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Brown Carole Lynnette	Director	BEECH HILL, CLONSKEAGH, DUBLIN 4, IRELAND	/s/ Ciara O'Riordan, attorney-in-fact-pursuant for Carole Lynnette Brown	19 Dec 2025	0001820224

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SW	Ordinary Shares	Award	$0	+48	+1.1%	$0.000000	4,371	18 Dec 2025	Direct	F1, F2

* 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 4,371 restricted stock units which will vest on the earlier of (i) May 2, 2026, or (ii) the date of the next annual meeting of Smurfit Westrock plc's stockholders.

Content

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.

Includes 4,371 restricted stock units which will vest on the earlier of (i) May 2, 2026, or (ii) the date of the next annual meeting of Smurfit Westrock plc's stockholders.