Effective March 10, 2022, the Board of Directors of Arcus Biosciences, Inc. approved a revised version of the company’s Code of Conduct and Ethics (“Code”) as part of the Company's regular review of its corporate policies. The revised Code maintains the essential principles and standards contained in the prior code, but includes updates to enhance guidance to employees and address various administrative updates. The revisions did not result in any waiver, explicit or implicit, of any provision of the Code.