Juan Jaen's Planned Sale of Class A Common Stock in Arcus Biosciences, Inc.

Juan Jaen, an officer of Arcus Biosciences, Inc., has filed a Form 144 notice indicating his intention to sell 100,000 shares of Class A Common Stock. The shares were acquired on May 29, 2015, in a private transaction with the issuer. The sale is part of a Rule 10b5-1(c) compliant selling plan adopted on August 12, 2024, and is scheduled to occur on October 28, 2025. The aggregate market value of the shares to be sold is approximately $1,988,000. Goldman Sachs & Co. LLC is facilitating the sale on behalf of Jaen. There are no reported transactions in the past three months.