Certain Preferred Stock of RayzeBio, Inc. are subject to a Lock-Up Agreement Ending on 13-MAR-2024. These Preferred Stock will be under lockup for 181 days starting from 14-SEP-2023 to 13-MAR-2024.

Details:
The directors, executive officers and the holders of substantially all of common stock, stock options and other securities convertible into, exercisable or exchangeable for common stock, including the selling stockholder (such parties, the ?lock-up parties?) have entered into lock-up agreements with the underwriters prior to the commencement of this offering pursuant to which each of these persons or entities, with limited exceptions, for a period of 180 days after the date of this prospectus.