Smurfit WestRock plc(SW) - 2025 Q3 - Quarterly Results

www.smurfitwestrock.com Exhibit 99.1 Smurfit Westrock Reports Third Quarter 2025 Results Dublin – October 29, 2025 – Smurfit Westrock plc (NYSE: SW, LSE: SWR) today announced the financial results for the third quarter ended September 30, 2025. Key points: Smurfit Westrock plc's performance for the three months ended September 30, 2025 and 2024 (in millions, except margins and per share data): | | | | September 30, | | | --- | --- | --- | --- | --- | | | | 2025 | | 2024 | | Net Sales | $ | 8,003 | $ | 7,671 ...