X0508 4 2024-01-04 0 0001787400 Nkarta, Inc. NKTX 0001981854 Levin Alyssa C/O NKARTA, INC. 1150 VETERANS BOULEVARD SOUTH SAN FRANCISCO CA 94080 0 1 0 0 See Remarks 0 Common Stock 2024-01-04 4 A 0 56000 0.00 A 56000 D Stock Option (right to buy) 6.01 2024-01-04 4 A 0 112500 0.00 A 2034-01-03 Common Stock 112500 112500 D Represents Restricted Stock Units ("RSUs") which vest in four equal annual installments beginning on January 14, 2025. 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 January 14, 2024. Chief Financial and Business Officer /s/ Alicia Hager, as Attorney-in-Fact 2024-01-08