X0206 3 2018-01-25 0 0001693664 ARMO BioSciences, Inc. ARMO 0001230721 CROSS HERB C/O ARMO BIOSCIENCES, INC. 575 CHESAPEAKE DRIVE REDWOOD CITY CA 94063 0 1 0 0 Chief Financial Officer Stock Option (right to buy) 6.9698 2027-12-12 Common Stock 240658 D 25% of the stock option becomes exercisable on November 27, 2018, with the remainder exercisable in 36 equal monthly installments thereafter provided the reporting person remains in continuous service on each vesting date; option may also be exercised early subject to Issuer's right of repurchase. /s/ Scott S. Paraker, Attorney-in-Fact 2018-01-25