X0306 4 2019-10-22 0 0000036029 FIRST FINANCIAL BANKSHARES INC FFIN 0001243211 DUESER F SCOTT P. O. BOX 701 ABILENE TX 79604-0701 1 1 0 0 Chairman, President and CEO Common Stock 2019-10-22 4 A 0 4240 0.00 A 850395 I By Trust Common Stock 2019-10-22 4 F 0 1658 35.38 D 848737 I By Trust Common Stock 556004 I By Partnership Common Stock 448310 I By Partnership On October 22,2019, First Financial Bankshares, Inc. granted the reporting person restricted stock totaling 4,240 shares. The restricted stock vests 33 1/3% at the end of one year, 66 2/3% at the end of two years, and 100% at the end of three years. The total shares represented are held in various trusts of which Mr. Dueser is the trustee, settlor and beneficiary. The reporting person elected, in accordance with the Registrant's 2015 Restricted Stock Plan, to exercise his right to have the Registrant withhold 1,658 shares of the Registrant's common stock to pay income taxes related to vesting of previously granted restricted stock. Represents shares that are owned by a family limited partnership of which Mr. Dueser serves as manager of the general partner and to which he disclaims beneficial ownership with respect to 417,004 shares. This report should not be deemed an admission that Mr. Dueser is the beneficial owner of these shares for purposes of Section 16 or any other purpose. Represents shares that are owned by a family limited partnership of which Mr. Dueser serves as manager of the general partner and to which he disclaims beneficial ownership with respect to 319,646 shares. This report should not be deemed an admission that Mr. Dueser is the beneficial owner of these shares for purposes of Section 16 or any other purpose. By: J. Bruce Hildebrand Attorney in Fact for F. Scott Dueser 2019-10-22