EXHIBIT 99.1 Celldex Reports First Quarter 2024 Financial Results and Provides Corporate Update - Phase 3 CSU studies expected to initiate in summer 2024 - - Positive Phase 2 CSU 12 week data reported in late breaking oral presentation at AAAAI 2024; 52 week data to be reported in 2H 2024 - - Enrollment completed in Phase 2 CIndU study; 12 week data expected 2H 2024 - - Phase 2 PN study initiated; enrollment progressing in Phase 2 EoE study - - Atopic dermatitis selected as next indication; Phase 2 study to ...