X0306 4 2023-01-13 0 0001787400 Nkarta, Inc. NKTX 0001553354 Hager Alicia J. C/O NKARTA, INC. 6000 SHORELINE COURT, SUITE 102 SOUTH SAN FRANCISCO CA 94080 0 1 0 0 Chief Legal Officer Common Stock 2023-01-13 4 A 0 37500 0.00 A 58300 D Common Stock 2023-01-17 4 S 0 1103 5.49 D 57197 D Stock Option (right to buy) 5.57 2023-01-13 4 A 0 75000 0.00 A 2033-01-12 Common Stock 75000 75000 D Represents Restricted Stock Units ("RSUs") which vest in four equal annual installments beginning on January 14, 2024. Each RSU represents a contingent right to receive one share of Common Stock of the Issuer. Represents shares sold to satisfy tax withholding obligations in connection with the vesting and settlement of RSUs and does not represent a discretionary transaction by the Reporting Person. This option is scheduled to vest and become exercisable in 48 equal monthly installments occurring on the completion of each successive month of the Reporting Person's service to the Issuer following January 14, 2023. /s/ Alicia Hager 2023-01-18