Exhibit 99.1 Milestone Pharmaceuticals Reports Fourth Quarter and Full Year 2023 Financial Results and Provides Regulatory and Corporate Update - On track to resubmit NDA for etripamil in PSVT early 2Q 2024 - Recent financing extends cash runway into 2026 - FDA reiterated prior guidance on regulatory pathway for AFib-RVR, End of Phase 2 Meeting expected mid-2024 MONTREAL and CHARLOTTE, N.C., March 21, 2024 -- Milestone Pharmaceuticals Inc. (Nasdaq: MIST) today reported financial results for the fourth quart ...