Gritstone to Present at the H.C. Wainwright Global Life Sciences Conference

Gritstone Oncology, Inc. (Nasdaq: GRTS), a clinical-stage biotechnology company developing next generation cancer and infectious disease immunotherapies, today announced that Andrew Allen, M.D., Ph.D., co-founder, president and chief executive officer, will present a company overview at the H.C. Wainwright Global Life Sciences Conference which will be available on Tuesday, March 9, 2021 at 7:00 a.m. ET.

A webcast will be available within the Investors & Media section of the Gritstone website at https://ir.gritstoneoncology.com/investors/events. An archived replay will be accessible for 30 days following the event.

About Gritstone OncologyGritstone Oncology (Nasdaq: GRTS), a clinical-stage biotechnology company, is developing the next generation of immunotherapies against multiple cancer types and infectious diseases. Gritstone develops its products by leveraging two key pillars—first, a proprietary machine learning-based platform, Gritstone EDGETM, which is designed to predict antigens that are presented on the surface of cells, such as tumor or virally-infected cells, that can be seen by the immune system; and second, the ability to develop and manufacture potent immunotherapies utilizing these antigens to potentially drive the patient’s immune system to specifically attack and destroy disease-causing cells. The company’s lead oncology programs include an individualized neoantigen-based immunotherapy, GRANITE, and an “off the shelf” shared neoantigen-based immunotherapy, SLATE, which are being evaluated in clinical studies. The company also has a bispecific antibody (BiSAb) program for solid tumors in lead optimization. Within its infectious disease pipeline, Gritstone is advancing CORAL, a COVID-19 program to develop a second-generation vaccine with support from departments within the National Institutes of Health (NIH) and the Bill & Melinda Gates Foundation and a license agreement with La Jolla Institute for Immunology. Additionally, the company has a global collaboration for the development of a therapeutic HIV vaccine with Gilead Sciences. For more information, please visit gritstoneoncology.com.

Gritstone ContactsMedia:Dan Budwick1AB(973) [e-mail]

Investors:Alexandra Santos Wheelhouse Life Science Advisors(510) [e-mail]