Southside Bancshares shareholders elect directors, approve say-on-pay; Vice-Chair retirement and appointment

Proposal 2 - Say-on-Pay Vote Shareholders approved, on a non-binding advisory basis, the compensation of the Company's named executive officers, as described in the Company's proxy statement. Final results were as follows: For Against Abstain Broker Non-Votes 18,855,915 1,090,682 108,416 4,353,821

Proposal 3 - Ratification of Appointment of Independent Registered Certified Public Accounting Firm Shareholders ratified the appointment by the Company's Audit Committee of Ernst & Young LLP to serve as the Company's independent registered certified public accounting firm for the year ending December 31, 2024. Final results were as follows: For Against Abstain Broker Non-Votes 24,182,143 220,966 5,725 N/A

Proposal 1 - Election of Directors Shareholders approved the election of four directors to serve for three-year terms expiring at the 2027 Annual Meeting of Shareholders and one director to serve for a one-year term expiring at the 2025 Annual Meeting of Shareholders. Final results were as follows: Term Expiring at the 2027 Annual Meeting: For Withheld Broker Non-Votes S. Elaine Anderson, CPA 19,336,603 718,410 4,353,821 Kirk A. Calhoun, M.D 19,506,531 548,482 4,353,821 Patricia A. Callan 18,588,008 1,467,005 4,353,821 John R. (Bob) Garrett 19,094,959 960,054 4,353,821 Term Expiring at the 2025 Annual Meeting: Tony K. Morgan, CPA 19,270,796 784,217 4,353,821