Third Coast Bancshares, Inc. has entered into a definitive merger agreement to acquire Great Plains Bancshares, Inc. in an all-stock transaction valued at approximately $239.6 million based on Third Coast’s closing stock price as of October 6, 2026. Under the terms, shareholders of Great Plains will receive shares of Third Coast common stock, resulting in pro forma equity ownership of approximately 78% by Third Coast and 22% by Great Plains. The combined entity is expected to have approximately $9 billion in assets following completion. The transaction requires approval from both companies' boards and shareholders, as well as regulatory clearance, with closing anticipated in the first quarter of 2027. Third Coast Bancshares, Inc. is a Texas-based bank holding company operating through its subsidiary Third Coast Bank.