[Form 4] Smurfit Westrock plc Insider Trading Activity

Rhea-AI Filing Summary

Smurfit Westrock plc reported that President and Group CEO Anthony PJ Smurfit received additional equity awards linked to company dividends. On 12/18/2025, he acquired 734 ordinary shares at $0 through dividend-equivalent restricted stock units, bringing his directly held stake to 1,570,137 ordinary shares. A further 1,000 shares are reported as indirectly held by his child in the same household.

The filing also shows dividend-equivalent accruals on his performance share plan. On the same date, he received 2,023 additional restricted stock units at no cost, each representing one ordinary share. After this transaction, he holds 183,480 restricted stock units, scheduled to vest in tranches, including 100,484 units in February 2026 and 82,996 units in February 2027, plus 66,592 units vesting in three equal annual installments starting March 11, 2026.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

SMURFIT ANTHONY P J

(Last) (First) (Middle)

BEECH HILL

CLONSKEAGH

(Street)

DUBLIN L2 D04N2R2

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Smurfit Westrock plc [ SW ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and Group CEO

3. Date of Earliest Transaction (Month/Day/Year)
12/18/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Ordinary Shares	12/18/2025		A		734	A	$0(1)	1,570,137(2)	D
Ordinary Shares								1,000	I	See footnote(3)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units (PSP)	(1)	12/18/2025		A		2,023		(4)	(4)	Ordinary Shares	2,023	$0	183,480	D

Explanation of Responses:

1. 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.

2. 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.

3. 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.

4. 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.

Remarks:

	/s/ Ciara O'Riordan, attorney-in-fact for Anthony PJ Smurfit	12/19/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Smurfit Westrock (SW) disclose for 12/18/2025?

The company reported that President and Group CEO Anthony PJ Smurfit acquired 734 ordinary shares at $0 through dividend-equivalent restricted stock units on 12/18/2025.

How many Smurfit Westrock (SW) shares does the CEO hold after this Form 4?

Following the transaction, Anthony PJ Smurfit beneficially owns 1,570,137 ordinary shares directly and 1,000 shares indirectly through his child.

What new restricted stock units did the Smurfit Westrock (SW) CEO receive?

On 12/18/2025, he received 2,023 restricted stock units as dividend equivalents, each representing the right to receive one ordinary share at no cash cost.

How many restricted stock units does the Smurfit Westrock (SW) CEO now hold and when do they vest?

He holds 183,480 restricted stock units, with 100,484 scheduled to vest in February 2026 and 82,996 in February 2027. In addition, 66,592 restricted stock units are set to vest in three equal annual installments starting on March 11, 2026.

Why did additional Smurfit Westrock (SW) restricted stock units accrue to the CEO?

Additional restricted stock units accrued as dividend equivalents in connection with a quarterly dividend of $0.4308 per ordinary share, and are subject to the same terms as the underlying awards.

How are the indirectly held Smurfit Westrock (SW) shares treated in this Form 4?

The 1,000 indirectly held shares are owned by the CEO's child in his household. He disclaims beneficial ownership of these shares, and the report states it is not an admission of beneficial ownership under Section 16.