Certain Class B Common Stock of M3-Brigade Acquisition III Corp. are subject to a Lock-Up Agreement Ending on 20-APR-2022. These Class B Common Stock will be under lockup for 181 days starting from 21-OCT-2021 to 20-APR-2022.

Details:
The company 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 Cantor Fitzgerald & Co., offer, sell, contract to sell, pledge or otherwise dispose of, directly or indirectly, any units, warrants, shares of common stock or any other securities convertible into, or exercisable, or exchangeable for, shares of common stock; provided, however, that they may (1) issue and sell the private placement warrants, (2) issue and sell the additional units to cover underwriters' over-allotment option (if any), (3) register with the SEC pursuant to an agreement to be entered into concurrently with the issuance and sale of the securities in this offering, the resale of the private placement warrants and the shares of Class A common stock issuable upon exercise of the warrants and the founder shares, and (4) issue securities in connection with initial business combination. Cantor Fitzgerald & Co., in its sole discretion, may release any of the securities subject to these lock-up agreements at any time without notice.