Nkarta Inc

Item 5. Other Information.

During the quarter ended March 31, 2024, none of our directors or officers adopted, modified orterminated a "Rule 10b5-1 trading arrangement" or a "non-rule 10b5-1 trading arrangement," as each item is defined in Item 408(a) of Regulation S-K, except as described below.

On March 28, 2024, Paul Hastings, Chief Executive Officer, adopted a trading arrangement for the sale of

shares of our common stock (a "Rule 10b5-1 Trading Plan") that is intended to satisfy the affirmative defense conditions of Exchange Act Rule 10b5-1(c). Mr. Hastings’ Rule 10b5-1 Trading Plan provides for the sale of up to 439,061 shares of common stock(including shares obtained from the exercise of vested stock options and the associated sale of such shares) pursuant to the terms of the plan. The first possible trade date under Mr. Hastings’ Rule 10b5-1 Trading Plan is June 27, 2024, and the planis effective through June 27, 2025 unless earlier terminated in accordance with the terms of the plan. On March 15, 2024, Mr. Hastings terminated his prior Rule 10b5-1 Trading Plan originally adopted on June 27, 2022, for the sale of up to 340,000 shares of common stock, subject to certain conditions, until July 31, 2024, of which 160,000 shares remained unsold at the date his prior Rule 10b5-1 Trading Plan was terminated.

On March 28, 2024, Alyssa Levin, Chief Financial and Business Officer, adopted a Rule 10b5-1 Trading Plan that is intended to satisfy the affirmative defense conditions of Exchange Act Rule 10b5-1(c). Ms. Levin’s Rule 10b5-1 Trading Plan provides for the sale of up to 110,600 shares of common stock(including shares obtained from the exercise of vested stock options and the associated sale of such shares), as well as 100% of the net shares of common stock resulting from the vesting of previously-awarded restricted stock units covering 28,000 shares of common stock, in each case pursuant to the terms of the plan. The first possible trade date under Ms. Levin’s Rule 10b5-1 Trading Plan is July 1, 2024, and theplan is effective through June 26, 2026 unless earlier terminated in accordance with the terms of the plan.

On March 28, 2024, Alicia Hager, Chief Legal Officer, adopted a Rule 10b5-1 Trading Plan that is intended to satisfy the affirmative defense conditions of Exchange Act Rule 10b5-1(c). Dr. Hager’s Rule 10b5-1 Trading Plan provides for the sale of up to 216,025 shares of common stock(including shares obtained from the exercise of vested stock options and the associated sale of such shares), ,as well as 100% of the net shares of common stock resulting from the vesting of previously-awarded restricted stock units covering 30,575 shares of common stock, in each case pursuant to the terms of the plan. The first possible trade date under Dr. Hager’s Rule 10b5-1 Trading Plan is June 27, 2024, and the plan is effective through November 13, 2025 unless earlier terminated in accordance with the terms of the plan.

On March 28, 2024, Ralph Brandenberger, Chief Technical Officer, adopted a Rule 10b5-1 Trading Plan that is intended to satisfy the affirmative defense conditions of Exchange Act Rule 10b5-1(c). Dr. Brandenberger’s Rule 10b5-1 Trading Plan provides for the sale of up to 36,062 shares of common stock(including shares obtained from the exercise of vested stock options and the associated sale of such shares), subject to certain conditions, as well as 100% of the net shares of common stock resulting from the vesting of previously-awarded restricted stock units covering 43,025 shares of common stock, in each case pursuant to the terms of the plan. The first possible trade date under Dr. Brandenberger’s Rule 10b5-1 Trading Plan is July 1, 2024, and theplan is effective through June 26, 2026 unless earlier terminated in accordance with the terms of the plan.

On March 28, 2024, Leone Patterson, director and chairperson of the audit committee of the Company's Board

of Directors, adopted a Rule 10b5-1 Trading Plan that is intended to satisfy the affirmative defense conditions of Exchange Act Rule 10b5-1(c). Ms. Patterson’s Rule 10b5-1 Trading Plan provides for the sale of up to 39,729 shares of common stock (including shares obtained from the exercise of vested stock options and the associated sale of such shares) pursuant to the terms of the plan. The first possible trade date under Ms. Patterson’s Rule 10b5-1 Trading Plan is June 27, 2024, and the plan is effective through June 19, 2026 unless earlier terminated in accordance with the terms of the plan.