144 0001554713 XXXXXXXX LIVE 0000036029 FIRST FINANCIAL BANKSHARES INC 000-07674 400 PINE STREET ABILENE TX 79601 325-627-7361 Butler Ronald David II Officer Common Frost Brokerage Service

111 W Houston St San Antonio TX 78205

15000 527850.00 143327507 08/17/2026 NASDAQ Common 01/25/2002 Stock Option Exercise FFIN N 8720 01/25/2002 Cash/Check Common 01/25/2002 Stock Option Exercise FFIN N 8527 01/25/2002 Cash/Check Y 08/17/2026 Carmen Zamores as a duly authorized representative of National Financial Services LLC, as attorney-in-fact for Butler Ronald David II