Exhibit 99.1 Natural Resource Partners L.P. 1415 Louisiana St., Suite 3325, Houston, TX 77002 NEWS RELEASE Natural Resource Partners L.P. Reports First Quarter 2025 Results and Declares First Quarter 2025 Distribution of $0.75 per Common Unit HOUSTON, May 6, 2025 - Natural Resource Partners L.P. (NYSE:NRP) today reported first quarter 2025 results as follows: | | For the Three Months | | Last Twelve Months | | | --- | --- | --- | --- | --- | | | Ended | | Ended | | | (In thousands) (Unaudited) | March 31, 2 ...