X0609 4 2026-05-27 0001994702 Kyverna Therapeutics, Inc. KYTX 0001184592 SEIDENBERG BETH C false C/O KYVERNA THERAPEUTICS, INC. 5980 HORTON ST., STE 200 EMERYVILLE CA 94608 true false false false false Common Stock 2026-05-27 4 A false 5093 0 A 21727 D Common Stock 3787940 I See Footnote Common Stock 869317 I See Footnote Stock Option (right to buy) 8.59 2026-05-27 4 A false 20582 0 A 2036-05-27 Common Stock 20582 20582 D Represents a restricted stock unit award of common stock, which will vest in full on the earlier of (i) May 27, 2027, and (ii) immediately prior to the date of the Issuer's 2027 annual meeting of stockholders, subject to the Reporting Person's continuous service to the Issuer on and through each applicable vesting date, inclusive. All of the shares subject to the option shall be fully vested and exercisable on the earlier of (i) May 27, 2027, and (ii) immediately prior to the date of the Issuer's 2027 annual meeting of stockholders, subject to the Reporting Person's continuous service to the Issuer on and through each applicable vesting date, inclusive. Shares held directly by Westlake BioPartners Fund I, L.P. ("Westlake I"). The general partner of Westlake I is Westlake BioPartners GP I, LLC ("Westlake GP I"). The Reporting Person is the managing director of Westlake GP I and has sole voting and dispositive control over Westlake GP I, and disclaims beneficial ownership of the shares held by Westlake I except to the extent of the Reporting Person's pecuniary interest therein, if any. Shares held directly by Westlake BioPartners Opportunity Fund I, L.P. ("Westlake Opportunity"). The general partner of Westlake Opportunity is Westlake BioPartners Opportunity GP I, LLC ("Westlake Opportunity GP I"). The Reporting Person is the managing director of Westlake Opportunity GP I and has sole voting and dispositive control over Westlake Opportunity GP I, and disclaims beneficial ownership of the shares held by Westlake Opportunity except to the extent of the Reporting Person's pecuniary interest therein, if any. By: /s/ Samantha H. Eldredge, as Attorney-in-fact 2026-05-29