RSU tax withholding trims Smurfit Westrock (SW) director holdings

Rhea-AI Filing Summary

Smurfit Westrock plc director Lourdes Melgar reported a routine tax-related share disposition. On May 1, 2026, 2,123 Ordinary Shares were withheld at $38.39 per share to satisfy her tax withholding obligation upon vesting and settlement of restricted stock units. After this non-market transaction, she directly holds 4,107 Ordinary Shares.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Melgar Lourdes

Role null

Type	Security	Shares	Price	Value
Tax Withholding	Ordinary Shares	2,123	$38.39	$82K

Holdings After Transaction: Ordinary Shares — 4,107 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares withheld for taxes: 2,123 shares Withholding price per share: $38.39 per share Shares owned after transaction: 4,107 shares +1 more

4 metrics

Shares withheld for taxes 2,123 shares Ordinary Shares withheld on May 1, 2026

Withholding price per share $38.39 per share Applied to 2,123 withheld shares

Shares owned after transaction 4,107 shares Direct Ordinary Share holdings after tax withholding

Tax-withholding disposition shares 2,123 shares Classified as tax-withholding disposition (Code F)

Key Terms

restricted stock units, tax withholding obligation, Ordinary Shares, Form 4

4 terms

restricted stock units financial

"upon vesting and settlement of their restricted stock units."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligation financial

"withheld to satisfy the reporting persons tax withholding obligation upon vesting"

Ordinary Shares financial

"Reflects ordinary shares of Smurfit Westrock plc withheld to satisfy"

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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
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^*

Melgar Lourdes

(Last) (First) (Middle)

BEECH HILL, CLONSKEAGH

(Street)

DUBLIN 4 D04 N2R2

(City) (State) (Zip)

IRELAND

(Country)

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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/01/2026

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

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

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

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	05/01/2026		F		2,123(1)	D	$38.39	4,107	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

Explanation of Responses:

1. Reflects ordinary shares of Smurfit Westrock plc withheld to satisfy the reporting persons tax withholding obligation upon vesting and settlement of their restricted stock units.

Remarks:

	/s/ Ciara O'Riordan (attorney-in-fact-pursuant for Lourdes Melgar)	05/05/2026
	** 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).
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.
* Form 4: SEC 1474 (03-26)

FAQ

What did Smurfit Westrock (SW) director Lourdes Melgar report on this Form 4?

Lourdes Melgar reported a tax-related share disposition. Smurfit Westrock withheld 2,123 Ordinary Shares at $38.39 per share to cover her tax obligation when restricted stock units vested and settled, leaving her with 4,107 shares directly owned afterward.

Was the Smurfit Westrock (SW) Form 4 transaction an open-market sale?

No, the transaction was not an open-market sale. The 2,123 Ordinary Shares were withheld by the company to satisfy Lourdes Melgar’s tax withholding obligation upon vesting and settlement of restricted stock units, a routine compensation-related event rather than a discretionary market trade.

How many Smurfit Westrock (SW) shares were withheld for taxes from Lourdes Melgar?

The company withheld 2,123 Ordinary Shares from Lourdes Melgar. These shares were applied toward her tax withholding obligation when her restricted stock units vested and settled, according to the Form 4 and accompanying footnote describing the nature of the disposition.

What is Lourdes Melgar’s direct shareholding in Smurfit Westrock (SW) after this Form 4 event?

After the tax-withholding disposition, Lourdes Melgar directly owns 4,107 Ordinary Shares of Smurfit Westrock. This figure reflects her holdings following the withholding of 2,123 shares used to cover taxes on the vesting and settlement of her restricted stock units.

What price per share was used for the Smurfit Westrock (SW) tax-withholding shares?

The tax-withholding disposition used a price of $38.39 per Ordinary Share. This price was applied to the 2,123 shares withheld from Lourdes Melgar to satisfy her tax obligation associated with the vesting and settlement of her restricted stock units.