SCHEDULE 13G/A 0002053905 XXXXXXXX LIVE 1 Common Stock, par value $0.01 per share 12/31/2025 0001967306 Mercer Bancorp, Inc. 58774N101 1100 Irmscher Boulevard Celina OH 45822 Rule 13d-1(b) Mercer Savings Bank Employee Stock Ownership Plan Trust b OH 65470 16026 81496 0 81496 N 7.9 EP Mercer Bancorp, Inc. 1100 Irmscher Boulevard, Celina, Ohio, 45822 Mercer Savings Bank, Employee Stock Ownership Plan Trust, Trustee: Community Bank of Pleasant Hill, dba First Trust of MidAmerica 3500 N Village Dr. Suite 220, St. Joseph, Missouri 64506 Ohio N EP 81,496 7.9% 65,470 16,026 81,496 0 Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. Mercer Savings Bank Employee Stock Ownership Plan Trust /s/ Gerald Lau 02/06/2026