First Financial Bankshares, Inc. is a financial holding company. The Company, through its subsidiaries, conducts a full-service commercial banking business. Its subsidiary bank, First Financial Bank, N.A., provides general commercial banking services, which include accepting and holding checking, savings, and time deposits, making loans, offering automated teller machines (ATMs), drive-in and night deposit services, safe deposit facilities, remote deposit capture, internet banking, mobile banking, payroll cards, funds transfer, and other customary commercial banking services. It also provides trust and wealth management activities through its trust company, First Financial Trust & Asset Management Company, N.A. Through its trust company, it offers personal trust services, which include wealth management, the administration of estates, testamentary trusts, revocable and irrevocable trusts, and agency accounts. Its loan portfolio consists of professionals, individuals, and others.