X0306 4 2019-01-30 0 0001654151 Deciphera Pharmaceuticals, Inc. DCPH 0001752827 Martin Daniel C. C/O DECIPHERA PHARMACEUTICALS, INC. 500 TOTTEN POND ROAD WALTHAM MA 02451 0 1 0 0 Chief Commercial Officer Stock Option (Right to Buy) 26.35 2019-01-30 4 A 0 52000 0.00 A 2029-01-29 Common Stock 52000 52000 D This stock option was issued pursuant to the Issuer's 2017 Stock Option and Incentive Plan. The option vests in 48 equal monthly installments following the vesting commencement date of January 1, 2019 , subject to continued service through such dates. /s/ Jeffrey M. Held, Attorney-in-Fact 2019-02-01