Exhibit 99.1 Perimeter Solutions Reports Second Quarter 2025 Financial Results August 7, 2025 Second quarter Net Loss of $32.2M and Adjusted Net Income of$57.1M Continued value driver execution and normalized fire activity drove second quarter Adjusted EBITDA of $91.3M Second quarter Loss Per Diluted Share of$0.22 and Adjusted Earnings Per Diluted Share of $0.39 Clayton, Missouri, August 7, 2025 – Perimeter Solutions, Inc. (NYSE: PRM) ("Perimeter," "Perimeter Solutions," or the "Company"), a leading globa ...