Third Coast Bancshares reports Q3 2026 earnings and announces $239.6 million merger with Great Plains

Third Coast Bancshares posted third‑quarter 2026 net income of $19.0 million and a net interest margin of 3.70%, down from the prior quarter. The bank announced an all‑stock acquisition of Great Plains Bancshares valued at approximately $239.6 million, expected to close in the first quarter of 2027 and create a roughly $9 billion asset franchise. Loan balances grew to $5.49 billion and book value per share rose to $36.53.

The lower margin and merger‑related expenses pressure near‑term earnings, while the deal expands the company’s scale and could enhance future profitability. The company also guided Q4 margin to about 3.80%, indicating an expected rebound.

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