Saverio Mayer) - 10 Jun 2026 Form 4 Insider Report for Smurfit Westrock plc (SW)

Reporting relationship: President and Chief Executive Officer, Europe, MEA and APAC
Issuer ticker: SW
Reported as of: 10 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 12 Jun 2026, 12:01:41 UTC
Prior SEC filing: 19 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Ciara O'Riordan (attorney-in-fact for Saverio Mayer)

Key filing fact

Saverio Mayer) filed Form 4 for Smurfit Westrock plc (SW) on 12 Jun 2026.

Key facts

This page summarizes Saverio Mayer)'s Form 4 filing for Smurfit Westrock plc (SW).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 12 Jun 2026, 12:01.

Change

Previous filing in this sequence was filed on 19 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002028256 Primary reporting owner

Mayer Saverio

Relationship: President and Chief Executive Officer, Europe, MEA and APAC
Address: BEECH HILL, CLONSKEAGH, DUBLIN 4, IRELAND
Signature: /s/ Ciara O'Riordan (attorney-in-fact for Saverio Mayer)
Signature date: 12 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SW transaction

Ordinary Shares

Award

Transaction value
Shares: +127
Change %: +0.05%
Price: $0.000000^*
Shares after: 241,370
Date: 10 Jun 2026
Ownership: Direct
Footnotes: F1, F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

SW transaction Derivative

Restricted Stock Units (PSP)

Award

Transaction value
Shares: +432
Change %: +1.2%
Price: $0.000000^*
Shares after: 37,651
Date: 10 Jun 2026
Ownership: Direct
Underlying class: Ordinary Shares
Underlying amount: 432
Exercise price: $0.000000
Footnotes: F1, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

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.

Footnote F2

Includes 32,390 restricted stock units which are scheduled to vest in three equal annual installments beginning on the first anniversary of the grant date.

Footnote F3

The 37,651 restricted stock units vest and are due to settle in February 2027.

SEC remarks

President and Chief Executive Officer, Europe, MEA and APAC