X0306 4 2017-12-13 0 0001626971 Corvus Pharmaceuticals, Inc. CRVS 0001664506 Jones William Benton CORVUS PHARMACEUTICALS, INC. 863 MITTEN ROAD, SUITE 102 BURLINGAME CA 94010 0 1 0 0 See Remarks Common Stock, $0.0001 par value 113773 D Stock Option (Right to Buy) 10.60 2017-12-13 4 A 0 40000 0.00 A 2027-12-13 Common Stock 40000 40000 D A portion of these shares is subject to a right of repurchase held by the Issuer. The underlying shares subject to the option vest and become exercisable as to one-forty eighth (1/48th) of the shares subject to the option in successive, equal monthly installments measured from December 13, 2017, subject to Reporting Person's continued service relationship with the Issuer on each such vesting date. V.P., Pharmaceutical Development /s/ Leiv Lea, as Attorney-in-Fact for William Benton Jones, Ph.D. 2017-12-15