X0306 4 2022-06-17 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 2022-06-17 4 A 0 8000 0.00 A 20800 D Stock Option (right to buy) 12.25 2022-06-17 4 A 0 50500 0.00 A 2032-06-16 Common Stock 50500 50500 D Represents Restricted Stock Units ("RSUs") which vest in four equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a contingent right to receive one share of Common Stock of the Issuer. 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 June 17, 2022. /s/ Alicia J. Hager 2022-06-21