Form 4 Filing for CoastalSouth Bancshares, Inc.

Lauren Hemby, Chief Accounting Officer of CoastalSouth Bancshares, Inc. (COSO), reported transactions on April 27, 2026. Hemby acquired 4,000 shares of Common Stock through the conversion of Restricted Stock Units with no cost basis. The RSUs converted into shares of the issuer's common stock on a one-for-one basis. Following this acquisition, Hemby disposed of 1,181 shares of Common Stock at a price of $25.59 per share. Post-transaction, Hemby holds 13,069 shares of Common Stock directly. The filing indicates a total of 14,250 shares after the acquisition and 13,069 shares after the disposal.