Gritstone Oncology is a privately-held company headquartered in the San Francisco Bay Area with key functions located in Cambridge, Mass. We launched in October 2015 with a Series A financing of $102 million and currently employ more than 50 professionals.


We have brought together a group of distinguished scientific founders and advisors, a highly experienced and diverse leadership team and a seasoned and successful board of directors to tackle fundamental challenges at the intersection of cancer genomics and immunotherapy. 


With our unique approach to immuno-oncology, we are developing next-generation personalized immunotherapies to fight cancer in patients with the most difficult-to-treat tumors. We plan to combine these personalized neoantigen-targeted therapies with current immune checkpoint modulatory approaches to improve response rates and survival in patients with solid tumors.