Our Unique Story

Gritstone Oncology is developing tumor-specific cancer immunotherapies to fight multiple cancer types.




Gritstone’s approach seeks to generate a therapeutic immune response by leveraging insights into the immune system’s ability to recognize and destroy tumor cells by targeting tumor-specific neoantigens. We believe that activating and directing the immune system to these tumor targets could offer an important opportunity to extend the benefits of immunotherapy for patients with cancer.

Gritstone Oncology is a privately-held company headquartered in the San Francisco Bay Area, with key functions located in Cambridge, Massachusetts and Pleasanton, California. We were founded in August 2015, and since inception, have raised multiple private financing rounds.

Our Leadership

To deliver on the promise of our novel therapeutic approach, we have assembled an experienced leadership team with deep expertise in each of our core disciplines of cancer genomics, immunology, clinical and regulatory development and biomanufacturing.

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Andrew Allen, M.D., Ph.D

Co-founder, President and Chief Executive Officer

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Jayant Aphale, Ph.D.

Executive Vice President of Technical Operations

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Jean-Marc Bellemin, M.B.A.

Executive Vice President and Chief Financial Officer

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Matthew Hawryluk, Ph.D.

Executive Vice President and Chief Business Officer

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Erin E. Jones, M.S.

Senior Vice President and Global Head of Regulatory Affairs and Quality Assurance

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Karin Jooss, Ph.D.

Executive Vice President of Research and Chief Scientific Officer

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Raphaël F. Rousseau, M.D., Ph.D.

Executive Vice President and Chief Medical Officer

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Roman Yelensky, Ph.D.

Executive Vice President and Chief Technology Officer

of Directors

Andrew Allen, M.D., Ph.D
Co-founder, President and Chief Executive Officer
Richard A. Heyman, Ph.D.
Executive Chairman and co-founder of Metacrine
Judith J. Li
Partner at Lilly Asia Ventues (LAV)
Steve Krognes
Chief Financial Officer of Denali Therapeutics
Nicholas Simon
Managing Director of Clarus Ventures
Peter Svennilson
Founder of The Column Group (TCG)
Tom Woiwode, Ph.D.
Managing Director at Versant Ventures

Advisory Board

Timothy A. Chan, M.D. Ph. D
Mark Cobbold, M.D., Ph.D.
James L. Gulley, M.D., Ph.D.
Graham Lord, M.D., Ph.D.
Naiyer A. Rizvi, M.D.
Alessandro Sette, Dr.Biol.Sci.
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Gritstone Oncology is supported by a group of leading institutional investors.