X0508 4 2023-10-28 0 0001654151 Deciphera Pharmaceuticals, Inc. DCPH 0001752827 Martin Daniel C. C/O DECIPHERA PHARMACEUTICALS, INC. 200 SMITH STREET WALTHAM MA 02451 0 1 0 0 Chief Commercial Officer 0 Common Stock 2023-10-28 4 A 0 5576 A 64291 D Common Stock 2023-10-30 4 S 0 1407 12.0176 D 62884 D On February 15, 2023, the Reporting Person was granted restricted stock units ("RSUs"), which vest upon the satisfaction of three performance criteria. On October 28, 2023, the Issuer's Compensation Committee confirmed that performance criteria two had been met, resulting in the vesting of 5,576 RSUs. Includes 302 shares previously acquired under the Issuer's 2017 Employee Stock Purchase Plan. This sale was to cover tax liabilities in the vesting of RSUs. /s/ Jeffrey M. Held, Attorney-in-Fact 2023-10-31