Exhibit 99.1 Sensei Biotherapeutics Reports First Quarter 2024 Financial Results and Recent Business Highlights - Completed SNS-101 monotherapy and combination dose escalation through 15mg/kg with no dose limiting toxicities - - Company to present topline clinical data from the SNS-101 Phase 1 dose escalation study at the 2024 ASCO Annual Meeting - - Enrollment in the dose expansion portion of the clinical study advancing - - Strong balance sheet with cash runway into fourth quarter of 2025 - BOSTON, MA – M ...