Exhibit 99.1 BioXcel Therapeutics Reports First Quarter 2024 Financial Results Advancing TRANQUILITY and SERENITY program plans for two pivotal Phase 3 trials to expand BXCL501 market potential in acute treatment of agitation Strengthened intellectual property portfolio for BXCL501 with grant of two new patents, in Japan and the U.S. Completed $25 million registered direct offering Conference call set for 8:00 a.m. ET today NEW HAVEN, Conn., May 9, 2024 — BioXcel Therapeutics, Inc. (Nasdaq: BTAI), a biophar ...