Exhibit 99.1 FOR IMMEDIATE RELEASE Investor Relations: November 6, 2025 Ivan Marcuse The Woodlands, TX (281) 719-4637 NYSE: HUN Huntsman Announces Third Quarter 2025 Earnings Third Quarter Highlights | | | | Three months ended | | | | Nine months ended | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | | | September 30, | | | September 30, | | | | In millions, except per share amounts | 2025 | | | 2024 | 2025 | | | 2024 | | Revenues | $| 1,460 |$ | 1,540 $| | 4,328 |$ | 4,584 | | Net loss a ...