X0306 4 2020-04-28 0 0000036029 FIRST FINANCIAL BANKSHARES INC FFIN 0001280499 BRIDWELL TUCKER S P. O. BOX 701 ABILENE TX 79604-0701 1 0 0 0 Common Stock 2020-04-28 4 A 0 2156 0.00 A 68386 D Common Stock 3532 I By Spouse Common Stock 10000 I By Company Common Stock 336708 I By Trust This amount represents a restricted stock grant that vests in a single installment on April 27, 2021. The reporting person is sole stockholder and sole director of this company. This indirect ownership represents shares owned by a charitable foundation in which Mr. Bridwell is trustee or co-trustee. Mr. Bridwell disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that Mr. Briwell is the beneficial owner of such securities for purposes of Section 16 or any other purpose. By: J. Bruce Hildebrand Attorney in Fact for Tucker S. Bridwell 2020-04-28