X0508 4 2025-12-09 0001085913 FARMERS & MERCHANTS BANCORP FMCB 0001184730 STEINWERT KENT A 861 W. TURNER RD LODI CA 95242 true true false false President/CEO 0 Common Stock 2025-12-09 4 A false 400 0 D 9790 D Common Stock 2025-12-10 4 G false 2937 0 D 3108 I Held in a Trust Common Stock 2025-12-10 4 G false 17363 0 D 19000 I Held by a LLC Common Stock 5 I Held as Custodian for a Minor Child (5) On December 9, 2025, Reporting Person was granted a restricted stock award ("RSA") of 400 shares of Issuer's common stock without voting rights, which will vest ratably over a one (1) year term. Includes, as previously reported, grants on February 3, 2025 to Reporting Person of a RSA of 7,260 shares of Issuer's common stock without voting rights , which will vest ratably over a two (2) year term; and a special one-time RSA of 2,130 shares of Issuer's common stock without voting rights, which will vest ratably over a three (3) year term. 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. Shares previously held indirectly through the Company's Non-Qualified Executive Retirement Plans were distributed by the Trustees of the Plans, in connection with the liquidation and distribution of the Plans, on December 10, 2025, for no consideration. These share were previously reported as directly owned by Reporting Person; however, they are held by Reporting Person as custodian for a minor child. The Reporting Person disclaims beneficial ownership of these shares. Steinwert Kent A 2025-12-18