X0306 4 2018-12-21 0 0001626971 Corvus Pharmaceuticals, Inc. CRVS 0000939012 LEA LEIV CORVUS PHARMACEUTICALS, INC. 863 MITTEN ROAD, SUITE 102 BURLINGAME CA 94010 0 1 0 0 Chief Financial Officer Common Stock, $0.0001 par value 2018-12-21 4 P 0 24700 4.1461 A 24700 I By IRA Common Stock, $0.0001 par value 149206 I By Trust The price reported in Column 4 is a weighted price. These Shares were purchased in multiple transactions at prices ranging from $4.13 to $4.17 inclusive. Upon request, the Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the SEC full information regarding the Shares purchased at each separate price within the range set forth in this footnote. These shares are held by Leiv Lea IRA Contributory. A portion of these shares is subject to a right of repurchase held by the Issuer. These shares are held by Leiv Lea and Deborah Karlson, Trustees of the Karlson Lea Family Trust UTA dated February 11, 1998 (the "Karlson Lea Trust"). Mr. Lea has shared voting, investment and dispositive power over the shares held by the Karlson Lea Trust. /s/ Leiv Lea 2018-12-27