X0306 4 2017-04-23 0 0001302573 OncoMed Pharmaceuticals Inc OMED 0001503062 Patel Sunil C/O ONCOMED PHARMACEUTICALS, INC. 800 CHESAPEAKE DRIVE REDWOOD CITY CA 94063 0 1 0 0 See Remarks Common Stock 2017-04-23 4 A 0 20000 0.00 A 44584 D Stock Option (Right to Buy) 3.73 2017-04-23 4 A 0 60000 0.00 A 2027-04-22 Common Stock 60000 60000 D Restricted stock units ("RSUs"). The reporting person is entitled to receive one (1) share of common stock of the issuer for each one (1) RSU upon the vesting thereof. Includes 32,500 RSUs. The option vests with respect to 1/48 of the shares subject thereto on each monthly anniversary of the date of grant, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date. Chief Financial Officer and Senior Vice President, Corporate Development and Finance /s/ Alicia J. Hager, Attorney-in-Fact for Sunil Patel 2017-04-25