X0306 4 2019-06-06 0 0001326110 NantKwest, Inc. NK 0001424620 Thomas John C C/O NANTKWEST, INC. 3530 JOHN HOPKINS COURT SAN DIEGO CA 92121 1 0 0 0 Common Stock 2019-06-06 4 A 0 92592 0.00 A 394069 D Common Stock 13886 I See Footnote Each restricted stock unit ("RSU") 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 such applicable vesting date, one hundred percent (100%) of the RSUs subject to the award will vest on the earlier to occur of June 6, 2020 or the date immediately preceding the 2020 annual meeting of stockholders. Reported shares held by the John C Thomas Jr. Trustee Susan T Thomas U/W DTD 5/10/96 Exhibit 24: Power of Attorney /s/ Sonja Nelson, as Attorney-in-Fact 2019-06-07