X0508 4 2025-12-10 0001085913 FARMERS & MERCHANTS BANCORP FMCB 0001221681 CORUM EDWARD JR 111 W. PINE ST. LODI CA 95240 true false false false 0 Common Stock 515 D Common Stock 44 I Held by Spouse Common Stock 2025-12-10 4 G false 940 0 D 986 I Held in family trust Shares previously held indirectly through the Company's Non-Qualified Executive Retirement Plans, which, in connection with the liquidation and distribution of the Plans, were distributed by the Trustees of the Plan to Reporting Person's family trust on December 10, 2025, for no consideration. The Reporting Person is a trustee of the trust, and the Reporting Person and member of his immediate family are the sole beneficiaries of the trust. The Reporting Person remains the beneficial owner of the securities held by the trust. 46 of these shares were previously reported as directly by Reporting Person; however, they are held in the Reporting Persons family trust. The Reporting Person is a trustee of the trust, and the Reporting Person and members of his immediate family are the sole beneficiaries of the trust. The Reporting Persons remains the beneficial owner of the securities held by the trust. CORUM EDWARD JR 2025-12-18