Exhibit 99.1 UNITED STATES LIME & MINERALS, INC. — NEWS RELEASE Byrne (972) 991-8400 UNITED STATES LIME & MINERALS REPORTS SECOND QUARTER 2025 RESULTS AND DECLARES REGULAR QUARTERLY CASH DIVIDEND Dallas, Texas, July 30, 2025 - United States Lime & Minerals, Inc. (NASDAQ: USLM) today reported second quarter 2025 results: The Company's revenues in the second quarter 2025 were $91.5 million, compared to$76.5 million in the second quarter 2024, an increase of $15.0 million, or 19.6%. For the first six months 2 ...