SCHEDULE 13G 0001353254 XXXXXXXX LIVE Voting Common Stock, $1.00 par value per share 07/01/2025 0001297107 CoastalSouth Bancshares, Inc. 19058X207 400 GALLERIA PKWY Suite 1900 ATLANTA GA 30339 Rule 13d-1(d) EJF Capital LLC b DE 0 930171 0 930171 930171 N 8.5 IA Based on 10,448,892 shares of voting common stock, par value $1.00 per share ("Voting Common Stock") outstanding as of September 30, 2025, as reported by the CoastalSouth Bancshares, Inc. (the "Issuer") in its Form 10-Q filed with the U.S. Securities and Exchange Commission ("SEC") on November 7, 2025, plus 438,427 shares of Non-Voting Common Stock that EJF Sidecar Fund, Series LLC - Small Financial Equities Series has the right to convert within 60 days, on a one-for-one basis, into shares of Voting Common Stock. See Item 4. Emanuel J. Friedman b X1 0 930171 0 930171 930171 N 8.5 IN Based on 10,448,892 shares of Voting Common Stock outstanding as of September 30, 2025, as reported by the Issuer in its Form 10-Q filed with the SEC on November 7, 2025, plus 438,427 shares of Non-Voting Common Stock that EJF Sidecar Fund, Series LLC - Small Financial Equities Series has the right to convert within 60 days, on a one-for-one basis, into shares of Voting Common Stock. See Item 4. Neal J. Wilson b X1 0 930171 0 930171 930171 N 8.5 IN Based on 10,448,892 shares of Voting Common Stock outstanding as of September 30, 2025, as reported by the Issuer in its Form 10-Q filed with the SEC on November 7, 2025, plus 438,427 shares of Non-Voting Common Stock that EJF Sidecar Fund, Series LLC - Small Financial Equities Series has the right to convert within 60 days, on a one-for-one basis, into shares of Voting Common Stock. See Item 4. EJF Sidecar Fund, Series LLC - Small Financial Equities Series b DE 0 737495 0 737495 737495 N 6.8 OO Based on 10,448,892 shares of Voting Common Stock outstanding as of September 30, 2025, as reported by the Issuer in its Form 10-Q filed with the SEC on November 7, 2025, plus 438,427 shares of Non-Voting Common Stock that EJF Sidecar Fund, Series LLC - Small Financial Equities Series has the right to convert within 60 days, on a one-for-one basis, into shares of Voting Common Stock. See Item 4. EJF Financial Services Fund, LP b DE 0 192676 0 192676 192676 N 1.8 PN Based on 10,448,892 shares of Voting Common Stock outstanding as of September 30, 2025, as reported by the Issuer in its Form 10-Q filed with the SEC on November 7, 2025. See Item 4. EJF Financial Services GP, LLC b DE 0 192676 0 192676 192676 N 1.8 OO Based on 10,448,892 shares of Voting Common Stock outstanding as of September 30, 2025, as reported by the Issuer in its Form 10-Q filed with the SEC on November 7, 2025. See Item 4. CoastalSouth Bancshares, Inc. 400 GALLERIA PKWY, Suite 1900, ATLANTA, Georgia, 30339 This Schedule 13G is being filed on behalf of the following persons (the "Reporting Persons")*: (i) - EJF Capital LLC; (ii) - Emanuel J. Friedman; (iii) - Neal J. Wilson (iv) - EJF Sidecar Fund, Series LLC - Small Financial Equities Series ("Sidecar SFES"); (v) - EJF Financial Services Fund, LP (the "Financial Services Fund"); and (vi) - EJF Financial Services GP, LLC. *Attached as Exhibit A is a copy of an agreement among the Reporting Persons that this Schedule 13G is being filed on behalf of each of them. The address of the principal business office of each Reporting Person is: 2107 Wilson Boulevard Suite 410 Arlington, VA 22201 See Item 4 of the attached cover pages. Y See Item 9 of the attached cover pages. See Item 11 of the attached cover pages. See Item 5 of the attached cover pages. See Item 6 of the attached cover pages. See Item 7 of the attached cover pages. See Item 8 of the attached cover pages. Each of Sidecar SFES and the Financial Services Fund is the beneficial owner of the number of shares of Voting Common Stock shown on Item 9 of their respective cover pages. EJF Financial Services GP, LLC is the general partner of the Financial Services Fund and an investment manager of certain affiliates thereof and may be deemed to share beneficial ownership of the shares of Voting Common Stock of which the Financial Services Fund is the beneficial owner. EJF Capital LLC is the managing member of Sidecar SFES (and the investment manager of an affiliate thereof) and the sole member of EJF Financial Services GP, LLC, and may be deemed to share beneficial ownership of the shares of Voting Common Stock of which such entities may share beneficial ownership. Emanuel J. Friedman and Neal J. Wilson, as the members and managers of EJF Capital LLC, may be deemed to share beneficial ownership of the shares of Voting Common Stock over which EJF Capital LLC may share beneficial ownership. Y Y Y Y Y Y Exhibit A - Joint Filing Agreement EJF Capital LLC /s/ Thomas Davidson 11/13/2025 Emanuel J. Friedman /s/ Emanuel J. Friedman 11/13/2025 Neal J. Wilson /s/ Neal J. Wilson 11/13/2025 EJF Sidecar Fund, Series LLC - Small Financial Equities Series /s/ Thomas Davison 11/13/2025 EJF Financial Services Fund, LP /s/ Thomas Davison 11/13/2025 EJF Financial Services GP, LLC /s/ Thomas Davison 11/13/2025