Form 4 Filing for James S. MacLeod

This Form 4 filing details transactions made by James S. MacLeod, a director at CoastalSouth Bancshares, Inc. (COSO). On August 6, 2026, MacLeod acquired 96 shares of Common Stock at a price of $27.61 per share, bringing his post-transaction holdings to 201,347 shares. The following day, August 7, 2026, he acquired an additional 238 shares of Common Stock at $28.15 per share, increasing his post-transaction holdings to 201,585 shares. These transactions were marked as direct acquisitions. Additionally, the filing notes that following these transactions, 0 shares are owned following the transaction, with ownership held indirectly "By LLC". The signature date on the filing is September 14, 2026, signed by Lauren Hemby, Chief Accounting Officer.