Smurfit Westrock plc

For the period ended Mar 31, 2026. Filed May 1, 2026.

About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Mar 31, 2026 · Filed May 1, 2026

SW$44.19+0.2%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

See the whole filing, with its images and exhibits

Contents

Item 6. Exhibits

ExhibitNumber	Description of Exhibit
3.1	Amended Constitution of Smurfit Westrock plc (incorporated by reference to Exhibit 3.1 of the Company’s Current Report on Form 8-K filed on July 8, 2024).
22	List of Guarantor Subsidiaries and Issuers of Guaranteed Securities (incorporated by reference to Exhibit 22 of the Company’s Annual Report on Form 10-K filed on February 27, 2026).
31.1†	Certification of the Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2†	Certification of the Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32†*	Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.**
101.SCH	Inline XBRL Taxonomy Extension Schema.**
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase.**
101.DEF	Inline XBRL Taxonomy Extension Definition Document.**
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase.**
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase.**
104	Cover Page Interactive Data File––the cover page interactive data file does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.

†Filed or furnished herewith

*The certification furnished in Exhibit 32 hereto is deemed to accompany this Quarterly Report on Form 10-Q and will not be

deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, except to the extent that the

Registrant specifically incorporates it by reference. Such certification will not be deemed to be incorporated by reference into

any filings under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except to the

extent that the Registrant specifically incorporates it by reference.

**Submitted electronically herewith.

SIGNATURES

Under the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed by the

undersigned thereunto duly authorized.

	Smurfit Westrock plc
Dated: May 1, 2026		/s/ Anthony Smurfit
	Name:	Anthony Smurfit
	Title:	President & Group Chief Executive Officer
		(Principal Executive Officer)

	Smurfit Westrock plc
Dated: May 1, 2026		/s/ Ken Bowles
	Name:	Ken Bowles
	Title:	Executive Vice President & Group Chief Financial Officer
		(Principal Financial Officer)

ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.