X0306 4 2019-08-02 0 0001326110 NantKwest, Inc. NK 0001674905 Nelson Sonja C/O NANTKWEST, INC. 3530 JOHN HOPKINS COURT SAN DIEGO CA 92121 0 1 0 0 Chief Financial Officer Common Stock 2019-08-02 4 M 0 10000 0.00 A 25000 D Common Stock 2019-08-02 4 F 0 3458 1.27 D 21542 D Restricted Stock Units 2019-08-02 4 M 0 10000 0.00 D Common Stock 10000 30000 D Each restricted stock unit represents a contingent right to receive one share of NantKwest, Inc. common stock. Subject to the reporting person's continuing to be a Service Provider (as defined in the 2015 Equity Incentive Plan) through each applicable vesting date, the restricted stock units ("RSUs") will vest as follows: 25% of the RSUs will vest on August 2, 2019, and 25% of the RSUs will vest annually thereafter, such that the award will be fully vested on August 2, 2022. Exhibit 24 - Power of Attorney /s/ Sonja Nelson 2019-08-05