Sec Form 3 Filing - Shook David @ Nkarta, Inc. - 2023-01-01

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Shook David 2. Issuer Name and Ticker or Trading Symbol Nkarta, Inc. [ NKTX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Medical Officer (Last) (First) (Middle) C/O NKARTA, INC., 6000 SHORELINE COURT, SUITE 102 3. Date of Earliest Transaction (MM/DD/YY) 01/01/2023 (Street) SOUTH SAN FRANCISCO, CA94080 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 22,977( 1 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Option (right to buy) $ 18 ( 2 ) 07/08/2030 Common Stock 13,300 D Stock Option (right to buy) $ 18 ( 3 ) 07/08/2030 Common Stock 4,300 D Stock Option (right to buy) $ 18 ( 4 ) 07/08/2030 Common Stock 4,800 D Stock Option (right to buy) $ 54.89 ( 5 ) 01/07/2031 Common Stock 4,680 D Stock Option (right to buy) $ 31.85 ( 6 ) 04/29/2031 Common Stock 150 D Stock Option (right to buy) $ 12.14 ( 7 ) 01/13/2032 Common Stock 3,310 D Stock Option (right to buy) $ 18.44 ( 8 ) 04/28/2032 Common Stock 5,000 D Stock Option (right to buy) $ 13.86 ( 9 ) 05/15/2032 Common Stock 7,000 D Stock Option (right to buy) $ 12.25 ( 10 ) 06/16/2032 Common Stock 35,000 D Stock Option (right to buy) $ 16.46 ( 11 ) 08/19/2032 Common Stock 30,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Shook David C/O NKARTA, INC. 6000 SHORELINE COURT, SUITE 102 SOUTH SAN FRANCISCO, CA94080 Chief Medical Officer Signatures /s/ Alicia Hager, as Attorney-in-Fact 01/10/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Includes 1,660 Restricted Stock Units ("RSUs") which vest in four equal annual installments beginning on January 14, 2023, 5,000 RSUs which vest in four equal annual installments beginning on June 17, 2023, and 15,000 RSUs which vest in four equal annual installments beginning on August 20, 2023. Each RSU represents a contingent right to receive one share of Common Stock of the Issuer. ( 2 )The option is vested and exercisable as to 8,589 shares, and the remaining shares will vest and become exercisable ratably in monthly installments until fully vested on June 1, 2024. ( 3 )The option is vested and exercisable as to 2,687 shares, and the remaining shares will vest and become exercisable ratably in monthly installments until fully vested on July 1, 2024. ( 4 )The option is vested and exercisable as to 3,000 shares, and the remaining shares will vest and become exercisable ratably in monthly installments until fully vested on July 9, 2024. ( 5 )The option is vested and exercisable as to 2,340 shares, and the remaining shares will vest and become exercisable ratably in monthly installments until fully vested on January 8, 2025. ( 6 )The option is vested and exercisable as to 62 shares, and the remaining shares will vest and become exercisable ratably in monthly installments until fully vested on April 30, 2025. ( 7 )The option is vested and exercisable as to 759 shares, and the remaining shares will vest and become exercisable ratably in monthly installments until fully vested on January 14, 2026. ( 8 )The option is vested and exercisable as to 833 shares, and the remaining shares will vest and become exercisable ratably in monthly installments until fully vested on April 29, 2026. ( 9 )The option is vested and exercisable as to 1,021 shares, and the remaining shares will vest and become exercisable ratably in monthly installments until fully vested on May 16, 2026. ( 10 )The option is vested and exercisable as to 4,375 shares, and the remaining shares will vest and become e xercisable ratably in monthly installments until fully vested on June 17, 2026. ( 11 )The option is vested and exercisable as to 2,500 shares, and the remaining shares will vest and become exercisable ratably in monthly installments until fully vested on August 20, 2026.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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