Revolution Medicines, Inc.

Bus iness. Overview We are a clinical-stage precision oncology company developing novel targeted therapies for RAS-addicted cancers. We possess sophisticated structure-based drug discovery capabilities built upon deep chemical biology and cancer pharmacology know-how and innovative, proprietary technologies that enable the creation of small molecules tailored to unconventional binding sites. Guided by our understanding of genetic drivers and adaptive resistance mechanisms in cancer, we deploy precision medicine approaches to inform innovative monotherapy and combination regimens. Our research and development pipeline comprises inhibitors that bind directly to RAS variants (RAS(ON) Inhibitors) that are designed to be used as monotherapy, in combination with other RAS(ON) Inhibitors and/or other therapeutic agents. RAS(ON) Inhibitors Our RAS(ON) Inhibitors are based on our proprietary tri-complex technology platform, which enables a highly differentiated approach to inhibiting the active, GTP-bound form of RAS, which we refer to as RAS(ON). We are developing a portfolio of compounds that we believe were the first RAS(ON) Inhibitors to use this mechanism of action. We believe that direct inhibitors of RAS(ON) suppress cell growth and survival and are less susceptible to adaptive resistance mechanisms recognized for RAS inhibitors that target the inactive, GDP-bound form of RAS, which we refer to as RAS(OFF) inhibitors. We believe tailored RAS(ON) Inhibitors will be useful to serve the diverse landscape of RAS-addicted cancers optimally.