CoastalSouth Bancshares, Inc.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

c) Issuer Purchases of Equity Securities.

The table below sets forth information regarding the Company’s repurchase of shares of its outstanding common stock during the three-month period ended September 30, 2026.

(1) Excludes commissions.

(2) Excludes exercise taxes on shares repurchased.

(3) In May 2026, the Company announced that the Board of Directors had 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 $15.0 million of its shares of common stock with an effective date of May 1, 2026, and an expiration date of April 30, 2027, unless extended by the Board. Repurchases under the 2026 Repurchase Plan may be made from time to time in the open market, by accelerated share repurchase programs, in privately negotiated transactions, or otherwise in compliance with Rule 10b-18 of the Securities Exchange Act of 1934 (the “Exchange Act”), in each case subject to applicable regulatory requirements and other factors that may be considered by the Company in its sole discretion. Repurchases may also be made pursuant to a trading plan under Rule 10b5-1 of the Exchange Act, which would permit shares to be repurchased when the Company might otherwise be precluded from doing so because of self-imposed trading blackout periods or other regulatory restrictions. The 2026 Repurchase Program does not obligate the Company to repurchase any particular amount of common stock and may be extended, modified, amended, suspended, or discontinued by the Board at any time.