ArQule to Report Second Quarter 2019 Financial Results on August 7, 2019

ArQule, Inc. (Nasdaq: ARQL) today announced it will report financial results for the second quarter of 2019 before the market opens on Wednesday, August 7, 2019. The Company will hold a conference call and webcast on the same day at 9:00 a.m. ET to discuss these results and provide a general business update.

The live webcast can be accessed in the “Investors and Media” section of our website, www.arqule.com, under “Events & Presentations.” You may also listen to the call by dialing [phone] within the U.S. or [phone] outside the U.S. A replay will be available two hours after the completion of the call and can be accessed in the “Investors & Media” section of our website, www.arqule.com, under “Events and Presentations.”

About ArQule ArQule is a biopharmaceutical company engaged in the research and development of targeted therapeutics to treat cancers and rare diseases. ArQule’s mission is to discover, develop and commercialize novel small molecule drugs in areas of high unmet need that will dramatically extend and improve the lives of our patients. Our clinical-stage pipeline consists of four drug candidates, all of which are in targeted, biomarker-defined patient populations, making ArQule a leader among companies our size in precision medicine. ArQule’s pipeline includes: ARQ 531, an orally bioavailable, potent and reversible dual inhibitor of both wild type and C481S-mutant BTK, in phase 1 for patients with B-cell malignancies refractory to other therapeutic options; miransertib (ARQ 092), a potent and selective inhibitor of the AKT serine/threonine kinase, in a planned registrational trial with cohorts in Proteus syndrome and PROS to initiate in 2019; ARQ 751, a next generation highly potent and selective AKT inhibitor, in phase 1 for patients with AKT1 and PI3K mutations; and derazantinib, a multi-kinase inhibitor designed to preferentially inhibit the fibroblast growth factor receptor (FGFR) family, in a registrational trial for iCCA in collaboration with Basilea and Sinovant. ArQule’s current discovery efforts are focused on the identification and development of novel kinase inhibitors, leveraging the Company’s proprietary library of compounds.

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Corporate Contact: Kathleen Farren Investor Relations & Executive Assistant to the CFO [e-mail] Media Contact: Cait Williamson, Ph.D. LifeSci Public Relations [phone] [e-mail] www.ArQule.com