Southside Bancshares Inc is a bank holding company. Through its subsidiary, the Southside Bank, it operates as a financial institution offering various financial services to individuals, businesses, municipal entities, and nonprofit organizations. These services include consumer and commercial loans, deposit accounts, wealth management and trust services, brokerage services, and safe deposit services. The company's primary market areas are East Texas, Southeast Texas, and the greater Dallas-Fort Worth, Austin, and Houston, Texas.