Exhibit 99.1 FOR IMMEDIATE RELEASE Compass Minerals Reports Fiscal 2024 Second-Quarter Results Announces Decisive Measures to Accelerate Cash Flow Generation and Debt Reduction OVERLAND PARK, Kan. (May 7, 2024) - Compass Minerals (NYSE: CMP), a leading global provider of essential minerals, today reported fiscal 2024 second-quarter results. In addition, the company announced certain actions it is undertaking to improve cash generation and accelerate debt reduction, including the board of directors determini ...