X0609 4 2026-06-11 0 0001724521 Arcus Biosciences, Inc. RCUS 0001277503 KANEKO YASUNORI false C/O ARCUS BIOSCIENCES, INC. 3928 POINT EDEN WAY HAYWARD CA 94545 1 0 0 0 0 Common Stock 2026-06-11 4 A 0 5700 0 A 25700 D Common Stock 252524 I By Kaneko Investments, LLC Common Stock 505050 I By Kaneko Capital, LLC Common Stock 174681 I By Trust Stock Option (Right to Buy) 23.30 2026-06-11 4 A 0 16900 0 A 2036-06-10 Stock Option (Rights to Buy) 16900 16900 D Represents the grant of restricted stock units that vest in full on the earlier of June 11, 2027 or the next annual meeting of stockholders of the issuer. The RSUs will become fully vested in the event the Company is subject to a change in control. Includes 13,300 shares of restricted stock units (previously reported) that vested on June 11, 2026 and were subsequently transferred to the reporting person's trust. The option will vest in full on the earlier of June 11, 2027 or the next annual meeting of stockholders of the issuer. The option will become fully vested and exercisable in the event the Company is subject to a change in control. /s/ Carolyn Tang, Attorney-in-Fact 2026-06-12