X0508 4 2024-04-23 0 0000036029 FIRST FINANCIAL BANKSHARES INC FFIN 0001251134 MATTHEWS KADE P. O. BOX 701 ABILENE TX 79604-0701 1 0 0 0 0 Common Stock 2024-04-23 4 A 0 2295 0.00 A 15662 D Common Stock 355371 I By GRAT Common Stock 355371 I By Spouse GRAT Common Stock 560000 I By Trust This amount represents a restricted stock grant that vests in a single installment on April 29, 2025. This indirect ownership represents shares owned by a foundation in which Mr. Matthews is President and Director. Mr. Matthews disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that Mr. Matthews is the beneficial owner of such securities for purposes of Section 16 or any other purpose. By: Michelle S. Hickox Attorney in fact for Kade Matthews 2024-04-25