Exhibit 99.01 Eastman Announces First-Quarter 2025 Financial Results KINGSPORT, Tenn., April 24, 2025 – Eastman Chemical Company (NYSE:EMN) announced its first- quarter 2025 financial results. | (In | millions, | except | per | share | amounts; unaudited) 1Q2025 1Q2024 | | --- | --- | --- | --- | --- | --- | | Sales | revenue | | | | $2,290$2,310 | | Earnings | before | | interest | and | taxes ("EBIT") 302 263 | | Adjusted | EBIT* | | | | 311 274 | | Earnings | per | diluted | | share | 1.57 1.39 | | Adju ...