Exhibit 99.1 Liquidia Corporation Reports First Quarter 2024 Financial Results and Provides Corporate Update MORRISVILLE, N.C., May 13, 2024 – Liquidia Corporation (NASDAQ: LQDA) today reported financial results for the first quarter ended March 31, 2024. The company will host a webcast at 8:30 a.m. ET on May 14, 2024 to discuss the financial results and provide a corporate update. Dr. Roger Jeffs, Liquidia’s chief executive officer, said: “We continue to vigorously pursue final agency action for YUTREPIA’s ...