X0306 4/A 2020-10-02 2020-10-05 0 0001787400 Nkarta, Inc. NKTX 0001816598 Mahmood Nadir C/O NKARTA, INC. 6000 SHORELINE COURT, SUITE 102 SOUTH SAN FRANCISCO CA 94080 0 1 0 0 See Remarks Stock Option (right to buy) 29.73 2020-10-02 4 A 0 50000 0.00 A 2030-10-02 Common Stock 50000 50000 D This amendment on Form 4 is filed to correct the exercise price of the option award in Column 2 of Table II. The 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 October 2, 2020. Chief Financial and Business Officer /s/ Nadir Mahmood 2020-12-03