Exhibit 99.1 IDEAYA Biosciences, Inc. Reports First Quarter 2024 Financial Results and Provides Business Update • ASCO 2024 oral presentation of darovasertib neoadjuvant UM Phase 2 investigator-sponsored trial on June 3rd, and targeting neoadjuvant UM update in over 30 patients from Phase 2 company-sponsored trial and regulatory guidance both in H2 2024 • Selected move-forward Phase 2 dose for IDE397 in MTAP squamous NSCLC, based on clinical efficacy observed in this indication, including multiple PRs by RE ...