SOUTHSIDE BANCSHARES INC

Balance Sheet Data

At June 30, 2025, Southside had $8.34 billion in total assets, compared to $8.52 billion at December 31, 2024 and $8.36 billion at June 30, 2024.

Loans at June 30, 2025 were $4.60 billion, an increase of $12.6 million, or 0.3%, compared to $4.59 billion at June 30, 2024. Linked quarter, loans increased $34.7 million, or 0.8%, due to increases of $28.8 million in commercial real estate loans, $12.3 million in construction loans and $9.0 million in commercial loans. These increases were partially offset by decreases of $7.5 million in municipal loans, $5.3 million in 1-4 family residential loans and $2.5 million in loans to individuals.

Securities at June 30, 2025 were $2.73 billion, an increase of $18.1 million, or 0.7%, compared to $2.71 billion at June 30, 2024. Linked quarter, securities decreased $6.2 million, or 0.2%, from $2.74 billion at March 31, 2025.

Deposits at June 30, 2025 were $6.63 billion, an increase of $136.0 million, or 2.1%, compared to $6.50 billion at June 30, 2024. Linked quarter, deposits increased $41.1 million, or 0.6%, from $6.59 billion at March 31, 2025.

At June 30, 2025, we had 178,970 total deposit accounts with an average balance of $34,000. Our estimated uninsured deposits

Page-2 were 38.5% of total deposits as of June 30, 2025. When excluding affiliate deposits (Southside-owned deposits) and public fund deposits (all collateralized), our total estimated deposits without insurance or collateral was 21.1% as of June 30, 2025. Our noninterest bearing deposits represent approximately 20.6% of total deposits. Linked quarter, our cost of interest bearing deposits decreased one basis point from 2.83% in the prior quarter to 2.82%. Linked quarter, our cost of total deposits remained at 2.26%.

Our cost of interest bearing deposits decreased 16 basis points, from 2.99% for the six months ended June 30, 2024, to 2.83% for the six months ended June 30, 2025. Our cost of total deposits decreased 11 basis points, from 2.37% for the six months ended June 30, 2024, to 2.26% for the six months ended June 30, 2025.