[Form 4] Smurfit Westrock plc Insider Trading Activity

Rhea-AI Filing Summary

Smurfit Westrock plc executive Alvaro Henao, President and Chief Executive Officer, LATAM, reported routine equity awards and related adjustments. On December 18, 2025, he acquired 53 ordinary shares at a price of $0, and his total beneficial ownership of ordinary shares became 49,243 held directly.

On the same date, he also acquired 410 restricted stock units (PSP), bringing his total directly held derivative securities to 37,256 restricted stock units. These additional 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 award. The filing notes that 4,882 restricted stock units are scheduled to vest in three equal annual installments beginning on March 11, 2026, and that 18,207 units vest in February 2026 and 19,049 units in February 2027.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Henao Alvaro

Role See remarks

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units (PSP)	410	$0.00	--
Grant/Award	Ordinary Shares	53	$0.00	--

Holdings After Transaction: Restricted Stock Units (PSP) — 37,256 shares (Direct); Ordinary Shares — 49,243 shares (Direct)

Footnotes (1)

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. Includes 4,882 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. The 37,256 restricted stock units vest and are settled as follows:(i) 18,207 restricted stock units in February 2026, (ii) and 19,049 restricted stock units in February 2027.

Form 4 Insider Transactions: What Each Field Means →

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

OMB Number:			3235-0287
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hours per response:			0.5

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^*

Henao Alvaro

(Last) (First) (Middle)

BEECH HILL, CLONSKEAGH

(Street)

DUBLIN 4 L2 D04 N2R2

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	See remarks

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		53	A	$0(1)	49,243(2)	D

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		410		(3)	(3)	Ordinary Shares	410	$0	37,256	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 4,882 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. The 37,256 restricted stock units vest and are settled as follows:(i) 18,207 restricted stock units in February 2026, (ii) and 19,049 restricted stock units in February 2027.

Remarks:

President and Chief Executive Officer, LATAM

	/s/ Ciara O'Riordan (attorney-in-fact for Alvaro Henao)	12/19/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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