FIRST FINANCIAL BANKSHARES INC

Supervision and Regulation Payment of Dividends and Item 7 Management’s Discussion and Analysis of the Financial Condition and Results of Operations Capital and Liquidity Dividends for restrictions on our present or future ability to pay dividends, particularly those restrictions arising under federal and state banking laws. Equity Compensation Plans See Item 12 Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters . Purchases of Equity Securities by the Issuer and Affiliated Purchasers On July 22, 2025, the Company’s Board of Directors extended the authorization to repurchase up to 5,000,000 common shares through July 31, 2026. The prior authorization had been in place since July 27, 2021. The stock repurchase plan authorizes management to repurchase and retire the stock at such time as repurchases and retirements are considered beneficial to the Company and stockholders. Any repurchase of stock will be made through the open market, block trades, or in privately negotiated transactions in accordance with applicable laws and regulations. Under the repurchase plan, there is no minimum number of shares that the Company is required to repurchase. There have been no repurchases during 2024 or 2025. Rule 10b-18(a)(3) under the Securities Exchange Act of 1934), of our common stock during the three months ended December 31, 2025.