Exhibit 99.1 Theriva™ Biologics Reports First Quarter 2024 Operational Highlights and Financial Results - Reported topline data from the investigator sponsored Phase 1 trial of intravitreal VCN-01 in pediatric patients with refractory retinoblastoma; trial results were determined to be positive by the study Monitoring Committee- -Presented preclinical data demonstrating the potential synergy between VCN-01 and liposomal irinotecan in a human pancreatic mouse xenograft at the ASGCT Annual Meeting; emphasizes ...