M3-Brigade Acquisition V Corp. has postponed its extraordinary general meeting to June 18, 2026, to provide shareholders additional time to consider its proposed business combination with ReserveOne. The meeting was originally scheduled for June 15, 2026. The company also extended the deadline for holders of its Class A ordinary shares to exercise redemption rights to June 16, 2026.

The meeting will take place at 12:00 p.m. Eastern Time at the office of Troutman Pepper Locke LLP in New York and via live webcast. The record date for determining shareholders entitled to vote remains the close of business on May 7, 2026. There are no changes to the proposals or the recommendations of the company's board of directors.

The postponement allows shareholders additional time to submit proxies and for the company to continue outreach to shareholders whose votes have not yet been received. Shareholders who have already submitted proxies do not need to take action unless they wish to revoke their vote.

The proposed business combination involves ReserveOne, Inc., a digital asset holding and management company. The definitive proxy statement/prospectus was filed with the U.S. Securities and Exchange Commission on May 13, 2026.

Shareholders wishing to exercise redemption rights must follow instructions in the proxy statement and contact their broker or the company's transfer agent to ensure instructions are received by the new deadline.