[Form 4] Smurfit Westrock plc Insider Trading Activity

Smurfit Westrock plc executive Saverio Mayer reported equity award vesting and related share movements.

Rhea-AI Filing Summary

Smurfit Westrock plc executive Saverio Mayer reported equity award vesting and related share movements. On 02/13/2026, performance share plan and deferred bonus plan awards vested, converting into 44,539 and 12,288 ordinary shares at $0 exercise price. To cover tax withholding on these vestings, 24,436 ordinary shares were disposed of at $51.42 per share. Following these transactions, Mayer directly owned 222,130 ordinary shares of Smurfit Westrock plc.

Insider Trade Summary

56,827 shares exercised/converted

Exercise 5 txns

Insider Mayer Saverio

Role See remarks

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units (PSP)	44,539	$0.00	$0.00
Exercise	Restricted Stock Units (DBP)	12,288	$0.00	$0.00
Exercise	Ordinary Shares	44,539	$0.00	$0.00
Exercise	Ordinary Shares	12,288	$0.00	$0.00
Exercise Price or Tax Liability	Ordinary Shares	24,436	$51.42	$1.26M

Holdings After Transaction: Restricted Stock Units (PSP) — 36,788 contracts (Direct); Restricted Stock Units (DBP) — 10,907 contracts (Direct); Ordinary Shares — 222,130 shares (Direct)

Footnotes (4)

1. F1. Reflects the acquisition of common stock upon vesting and settlement of performance share plan awards. Each performance share plan award represents a right to receive one ordinary share of Smurfit Westrock plc upon vesting and settlement of the applicable award.
2. F2. Reflects the acquisition of common stock upon vesting and settlement of deferred bonus plan awards. Each deferred bonus plan award represents a right to receive one ordinary share of Smurfit Westrock plc upon vesting and settlement of the applicable award.
3. F3. Reflects ordinary shares of Smurfit Westrock plc withheld to satisfy the reporting persons tax withholding obligation upon vesting and settlement of deferred bonus plan awards and performance share plan awards.
4. F4. Reflects the vesting and settlement of deferred bonus plan awards granted on 22 September 2023 and performance share plan awards granted on 22 September 2023.

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Accepted by SEC EDGAR 02/17/2026 - 12:45 PM Learn about SEC filing dates

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
Estimated average burden
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^*

Mayer Saverio

(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)
02/13/2026

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	02/13/2026		M(1)		44,539	A	$0	234,278	D
Ordinary Shares	02/13/2026		M(2)		12,288	A	$0	246,566	D
Ordinary Shares	02/13/2026		F(3)		24,436	D	$51.42	222,130	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)	$0	02/13/2026		M			44,539	(4)	(4)	Ordinary Shares	44,539	$0	36,788	D
Restricted Stock Units (DBP)	$0	02/13/2026		M			12,288	(4)	(4)	Ordinary Shares	12,288	$0	10,907	D

Explanation of Responses:

1. Reflects the acquisition of common stock upon vesting and settlement of performance share plan awards. Each performance share plan award represents a right to receive one ordinary share of Smurfit Westrock plc upon vesting and settlement of the applicable award.

2. Reflects the acquisition of common stock upon vesting and settlement of deferred bonus plan awards. Each deferred bonus plan award represents a right to receive one ordinary share of Smurfit Westrock plc upon vesting and settlement of the applicable award.

3. Reflects ordinary shares of Smurfit Westrock plc withheld to satisfy the reporting persons tax withholding obligation upon vesting and settlement of deferred bonus plan awards and performance share plan awards.

4. Reflects the vesting and settlement of deferred bonus plan awards granted on 22 September 2023 and performance share plan awards granted on 22 September 2023.

Remarks:

President & Chief Executive Officer, Europe, MEA and APAC

	/s/ Ciara O'Riordan (attorney-in-fact for Saverio Mayer)	02/17/2026
	** 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).
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