HAVE YOU VOTED YET?
On or about May 21, 2026, Columbia Bank MHC mailed a proxy statement and Proxy Card(s) and other materials regarding its plan of conversion and reorganization (“plan of conversion”) to depositors and certain borrowers of Columbia Bank as of April 30, 2026, who are eligible to vote on the plan of conversion. If you have not yet voted, you may vote confidentially by mail, online at myproxyvotecounts.com, or by phone at 1-(844) 258-8899. Online and phone voting are available 24 hours a day through 11:59 p.m., Eastern time, on June 28, 2026.
We hope that you will vote “FOR” the approval of the plan of conversion as unanimously recommended by our board of directors. When you are ready to vote, use the 12-digit control number shown on your Proxy Card.