Exhibit 99.1 For Immediate Release United Therapeutics Corporation Reports First Quarter 2024 Financial Results SILVER SPRING, Md. and RESEARCH TRIANGLE PARK, N.C., May 1, 2024: United Therapeutics Corporation (Nasdaq: UTHR), a public benefit corporation, today announced its financial results for the quarter ended March 31, 2024. Total revenues in the first quarter of 2024 grew 34 percent year-over-year to $677.7 million, compared to $506.9 million in the first quarter of 2023. “The first quarter of 2024 re ...