Third Coast Bancshares Completes Merger With Keystone Bancshares; Combined Company Now Has Total Assets In Excess Of $6B

Third Coast Bancshares, Inc. ("Third Coast") (NYSE & NYSE Texas: TCBX), the parent company of Third Coast Bank, today announced the successful completion of its merger with Keystone Bancshares, Inc. ("Keystone"), the parent company of Keystone Bank, SSB ("Keystone Bank"), effective February 1, 2026.

The combined company now has total assets in excess of $6 billion. With the merger complete, Third Coast will initiate the integration of Keystone Bank into its platform, with customer conversion anticipated to take place this summer. In the meantime, Keystone customers will continue to receive service through their existing branches, website, mobile app, and dedicated relationship teams. Third Coast will provide detailed information to Keystone customers prior to the conversion.