UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): December 10, 2019

ARCUS BIOSCIENCES, INC.

(Exact Name of Registrant as Specified in its Charter)

3928 Point Eden Way

Hayward, CA 94545

(Address of principal executive offices)

Registrant’s telephone number, including area code: (510) 694-6200

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company:  ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

On December 10, 2019, the Board of Directors (the “Board”) of Arcus Biosciences, Inc. (the “Company”) appointed Patrick Machado to the Board as a Class I Director. Mr. Machado was further appointed to serve as a member of Company’s Nominating and Corporate Governance Committee.

Pursuant to the Company’s Compensation Program for Non-Employee Directors (“Director Compensation Program”), Mr. Machado is entitled to receive (a) an annual cash retainer of $35,000 for his service as a member of the Board, (b) an annual cash retainer of $4,000 for his service as a member of the Nominating and Corporate Governance Committee, and (c) an option to purchase 50,000 shares of the Company’s common stock, which will vest and become exercisable in substantially equal monthly installments over 36 months of continuous service provided by him to the Company, subject to accelerated vesting in the event the Company is subject to a Change in Control (as defined in the Director Compensation Program).

Mr. Machado is not a party to any transaction with the Company that would require disclosure under Item 404(a) of Regulation S-K, and there are no arrangements or understandings between Mr. Machado, on the one hand, and any other persons, on the other hand, pursuant to which Mr. Machado was selected as a director.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.