X0306 4 2018-09-18 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 Common Stock 2018-09-18 4 A 0 20000 0.00 A 20000 D Stock Option (Right to Buy) 36.10 2018-09-18 4 A 0 90000 0.00 A 2028-09-17 Common Stock 90000 90000 D The reporting person was awarded 20,000 Restricted Stock Units. Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock. The Restricted Stock Units shall vest in equal annual installments over two (2) years beginning on September 18, 2018. The Restricted Stock Units may be settled only by delivering shares of the Issuer's Common Stock, and thus, the grant is being reported in Table 1 as allowed per SEC guidance. This stock option was issued pursuant to the Issuer's 2017 Stock Option and Incentive Plan. 25% of the shares shall vest on September 18, 2019 and the remaining shares shall vest in 36 equal monthly installments thereafter, subject to continued service through such dates. /s/ Jeffrey M. Held, Attorney-in-Fact 2018-09-20