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  4. [Form 4] Smurfit Westrock plc Insider Trading Activity

Director adds 51 Smurfit Westrock (SW) shares through equity award

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

FergusonMchugh MaryLynn reported acquisition or exercise transactions in this Form 4 filing.

Smurfit Westrock plc director MaryLynn FergusonMchugh received an equity award of 51 ordinary shares on June 10, 2026. The grant was recorded at a price of $0.00 per share as a compensation-related award linked to restricted stock units. After this award, she holds 8,596 ordinary shares directly, including 4,489 restricted stock units that will vest on the earlier of May 1, 2027 or the next annual meeting of Smurfit Westrock plc stockholders. Additional restricted stock units accrued as dividend equivalents in connection with a quarterly dividend of $0.4523 per ordinary share, and each restricted stock unit represents the right to receive one ordinary share.

Positive

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Negative

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Insider FergusonMchugh MaryLynn
Role null
Type Security Shares Price Value
Grant/Award Ordinary Shares 51 $0.00 --
Holdings After Transaction: Ordinary Shares — 8,596 shares (Direct, null)
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 $0.4523 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 4,489 restricted stock units which will vest on the earlier of (i) May 1, 2027, or (ii) the date of the next annual meeting of Smurfit Westrock plc's stockholders.
Equity award 51 shares Ordinary shares granted on June 10, 2026
Post-transaction holdings 8,596 shares Total ordinary shares held directly after award
Unvested RSUs 4,489 units Restricted stock units vesting by May 1, 2027 or next annual meeting
Quarterly dividend $0.4523 per share Dividend that generated RSU dividend equivalents
restricted stock unit financial
"In accordance with the terms of the restricted stock unit award, additional restricted stock units accrued as dividend equivalents"
A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.
dividend equivalents financial
"additional restricted stock units accrued as dividend equivalents in connection with the Issuer's payment of a quarterly dividend"
Payments tied to employee or contractor equity awards that mirror the cash dividends paid on the company’s stock; they give the holder the same economic benefit as owning the shares without transferring actual shares—often paid in cash or additional award units when the award becomes payable. Investors care because these payments affect a company’s compensation costs, cash flow and potential share dilution, and they signal how management is being rewarded and aligned with shareholders.
vest financial
"Includes 4,489 restricted stock units which will vest on the earlier of (i) May 1, 2027, or (ii) the date of the next annual meeting"
A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.
ordinary share financial
"Each restricted stock unit represents the right to receive one ordinary share"
An ordinary share is a unit of ownership in a company that gives the holder a stake in its profits and usually the right to vote on key decisions. Think of it like a slice of a pizza where each slice entitles you to a portion of what’s left after bills are paid; value can rise or fall with the business and may pay dividends, so it matters to investors for income, growth and control.
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Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED 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*
FergusonMchugh MaryLynn
(Last)(First)(Middle)
BEECH HILL, CLONSKEAGH
(Street)
DUBLIN 4D04 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)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/10/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Ordinary Shares06/10/2026A51A$0(1)8,596(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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
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 $0.4523 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 4,489 restricted stock units which will vest on the earlier of (i) May 1, 2027, or (ii) the date of the next annual meeting of Smurfit Westrock plc's stockholders.
Remarks:
/s/ Ciara O'Riordan (attorney-in-fact-pursuant for Mary Lynn Ferguson McHugh)06/12/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Smurfit Westrock (SW) report for MaryLynn FergusonMchugh?

Smurfit Westrock reported that director MaryLynn FergusonMchugh received an equity award of 51 ordinary shares. The award was recorded at $0.00 per share as a compensation-related grant connected to restricted stock units and dividend equivalent accruals.

How many Smurfit Westrock (SW) shares does MaryLynn FergusonMchugh hold after this Form 4?

After the reported award, MaryLynn FergusonMchugh holds 8,596 ordinary shares of Smurfit Westrock directly. This total includes restricted stock units that convert into shares, reflecting her updated equity position following the June 10, 2026 grant.

What are the key details of the restricted stock units reported for Smurfit Westrock (SW)?

The filing notes 4,489 restricted stock units that will vest on the earlier of May 1, 2027 or the next annual stockholder meeting. Each restricted stock unit represents the right to receive one ordinary share of Smurfit Westrock when it vests.

How were additional restricted stock units created for Smurfit Westrock (SW) in this filing?

Additional restricted stock units accrued as dividend equivalents when Smurfit Westrock paid a quarterly dividend of $0.4523 per ordinary share. These additional units follow the same terms and conditions as the underlying restricted stock unit award.

Is the Smurfit Westrock (SW) Form 4 transaction a market purchase or a compensation grant?

The Form 4 describes a compensation-related grant or award, not an open-market purchase. The transaction is coded as an acquisition by award, with 51 ordinary shares recorded at $0.00 per share tied to restricted stock unit arrangements.

When will MaryLynn FergusonMchugh’s Smurfit Westrock (SW) restricted stock units vest?

The filing states that 4,489 restricted stock units will vest on the earlier of May 1, 2027 or the date of Smurfit Westrock’s next annual meeting of stockholders. Vesting will deliver one ordinary share for each restricted stock unit.