Third Coast Bancshares, Inc. completed its merger with Keystone Bancshares, Inc. effective February 1, 2026. Keystone Bancshares, Inc. reported total assets of $1.018 billion and total deposits of $864.4 million as of December 31, 2025. The merger involved a combination of stock and cash consideration, with Keystone shareholders receiving 0.45925 shares of Third Coast common stock or cash equivalent per share. Pro forma combined assets for the merged entity are estimated at $6.35 billion as of December 31, 2025. Keystone Bank, SSB was merged into Third Coast Bank, with the latter surviving.