Kyverna Therapeutics, Inc.

10b5-1 Trading Plan Activity

During the fiscal quarter ended December 31, 2024, none of our directors or officers (as defined in Section 16 of the Exchange Act) adopted or terminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act or any “non-Rule 10b5-1 trading arrangement,” as defined in Item 408(a) of Regulation S-K.

Restated Non-Employee Director Compensation Program

Effective March 25, 2025, the compensation committee of our board of directors implemented a Restated Non-Employee Director Compensation Program, or the Restated Director Compensation Program, which amends and restates the Company’s non-employee director compensation program that was adopted in connection with the IPO, or the Prior Director Compensation Program. The Restated Director Compensation Program provides that each non-employee director initially elected or appointed to our board of directors after March 25, 2025 will automatically be granted (A) an option under the 2024 Plan to purchase that number of shares of our common stock equal to $262,500 divided by the per share grant date fair value of the option award, which will vest as to 1/36th of the underlying shares on a monthly basis over three years, subject to continued service through the applicable vesting date, and (B) restricted stock units under the 2024 Plan or any other applicable Company equity incentive plan then maintained by us covering a number of shares of common stock equal to $87,500 divided by the per share grant date fair market value as of the date of the grant, rounded down to the nearest whole share, which will vest as to 1/3rd of the shares subject thereto on each one-year anniversary over three years, subject to continued service through the applicable vesting date.

In addition, pursuant to the Restated Director Compensation Program, on the date of each annual meeting of our stockholders, commencing with our 2025 annual meeting of shareholders, each non-employee director who (i) has been serving on our board of directors for at least four months and (ii) will continue to serve as a non-employee director immediately following such annual meeting will automatically be granted (A) an option, or the Annual Option Grant, under the 2024 Plan to purchase that number of shares of our common stock equal to (a) $131,250, divided by (b) the per share grant date fair value of the option award, or (B) restricted stock units, or the Annual RSU Grant, under the 2024 Plan or any other applicable Company equity incentive plan then maintained by us covering a number of shares of common stock equal to $43,750 divided by the per share grant date fair market value as of the date of the grant, rounded down to the nearest whole share. Each of the Annual Option Grant and the Annual RSU Grant will be automatically granted on the date of each applicable annual meeting of shareholders and will vest in full on the earlier of (i) the first anniversary of the grant date and (ii) immediately prior to the annual meeting of our stockholders following the date of grant, subject to continued service through the applicable vesting date.

Pursuant to the Restated Director Compensation Program, upon a change-in-control transaction, all outstanding equity awards held by our non-employee directors will vest in full. The cash compensation under the Restated Director Compensation Program remains the same as what was provided for in the Prior Director Compensation Program. See Part III, Item 11 of this Annual Report on Form 10-K for additional details regarding our non-employee director compensation.