FIRST FINANCIAL BANK ANNOUNCES THE ELECTION OF TIM BROWN AS CHIEF INFORMATION OFFICER AND TRANSITION OF JOHN RUZICKA TO CHIEF BANKING OPERATIONS OFFICER

ABILENE, Texas, Oct. 22, 2025 /PRNewswire/ -- First Financial Bankshares (the "Company") announced today the election of Tim Brown as Executive Vice President and Chief Information Officer of the Company and CEO of First Technology Services, Inc. (a wholly owned subsidiary of the Company), as part of our continued succession planning process. John Ruzicka, who has been serving as Chief Information Officer since 2018, will be transitioning to the role of Chief Banking Operations Officer where he will play an integral role in the oversight and scaling of the Bank's backroom operations.

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