Company: RCUS
Filing Date: 2025-02-25
Form Type: S-8
Source: 0001724521-25-000042
Chunk: 3

Company: Arcus Biosciences, Inc.
Filing Date: 2025-02-25
Form: S-8
Chunk 3
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/2018   |     |               |
| 107     |     | Filing Fee Table.                                                           |     |                           |     |            |     |         |     |            |     | X             |

### SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Hayward, State of California on this 25th day of February, 2025.

| ARCUS BIOSCIENCES, INC. |     |                         |
| By:                     |     | /s/ Terry Rosen         |
|                         |     | Terry Rosen, Ph.D.      
 Chief Executive Officer |

### POWER OF ATTORNEY

### KNOW ALL PERSONS BY THESE PRESENTS
that each person whose signature appears below constitutes and appoints Terry Rosen, Ph.D. and Robert C. Goeltz II and each of them, his or her true and lawful attorneys-in-fact and agents, each with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any and all amendments, including post-effective amendments, to this registration statement, and to file the same, with exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that each of said attorney-in-fact and agents or their substitute or substitutes may lawfully do or cause to be done by virtue hereof.

### IN WITNESS WHEREOF
, each of the undersigned has executed this Power of Attorney as of the date indicated.

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

| Name                        
 /s/ Terry Rosen             |     | Title                                
 Chief Executive Officer and Director |     | Date              
 February 25, 2025 |
|:----------------------------|:----|:-------------------------------------|:----|:------------------