CoastalSouth Bancshares, Inc. ("CoastalSouth" or the "Company") (NYSE:COSO), the holding company for Coastal States Bank (the "Bank" or "CSB"), today reported that its Board of Directors authorized a stock repurchase plan (the "2026 Repurchase Plan"), pursuant to which the Company may purchase, from time to time, up to an aggregate amount of $15 million of its shares of common stock. The 2026 Repurchase Plan will become effective on May 1, 2026, and will expire on April 30, 2027, unless extended by the Board.