Certain Class B Common Stock of Research Alliance Corp. II are subject to a Lock-Up Agreement Ending on 14-SEP-2021. These Class B Common Stock will be under lockup for 181 days starting from 17-MAR-2021 to 14-SEP-2021. Details: The company's sponsor, officers and directors have agreed that, for a period of 180 days from the date of this prospectus, they will not, without the prior written consent of Jefferies LLC, offer, sell, contract to sell, grant any option to sell (including any short sale), pledge, transfer, establish an open “put equivalent option” within the meaning of Rule 16a-l(h) under the Exchange Act, as amended, or otherwise dispose of, directly or indirectly, any shares of common stock or any other securities convertible into, or exercisable, or exchangeable for, shares of common stock currently or hereafter owned either of record or beneficially, or publicly announce an intention to do any of the foregoing.