Smurfit Westrock Limited

Report Publication Announcement • Aug 7, 2025

National Storage Mechanism | Additional information

Form 10-Q for the quarterly period ended June 30, 2025

Smurfit Westrock plc

Form 10-Q for the quarterly period ended June 30, 2025

Today Smurfit Westrock plc (the “Company”) filed its quarterly report on Form 10-Q for the quarterly period ended June 30, 2025, with the U.S Securities and Exchange Commission

(the “SEC”). The Form 10-Q is available to view on the SEC’s website at: https://www.sec.gov and the Company’s website at: https://investors.smurfitwestrock.com/financials/sec-filings/default.aspx

7 August 2025

CONTACT:

Gillian Carson-Callan

Group SVP Finance & Company Secretary

+353 (0)1 202 7000

View source version on businesswire.com: https://www.businesswire.com/news/home/20250806999605/en/

Smurfit Westrock plc