Exhibit 99.1 Boundless Bio Provides Business Updates Focused on Key Value Drivers and Reports Second Quarter 2024 Financial Results BBI-355 POTENTIATE clinical trial ongoing with initiatives implemented to expedite enrollment in combination cohorts; initial proof-of-concept data now expected in the second half of 2025 BBI-825 STARMAP clinical trial ongoing with initial proof-of-concept data expected in the second half of 2025 ECHO ecDNA diagnostic analytically validated and IRB-approved for use as a clinica ...