Southside Bancshares, Inc. · NYSE:SBSI
Southside Bancshares — Gulf South Bank Conference 2026
24 slides from Southside Bancshares's conference presentation, May 18, 2026
Slide 1: Gulf South Bank Conference May 18, 2026
NYSE & NYSE Texas: SBSI Gulf South Bank Conference May 18, 2026 1
Slide 2: Forward-Looking Statements
Forward-Looking Statements Certain statements of other than historical fact that are contained in this press release and in other written materials, documents and oral statements issued by or on behalf of the Company may be considered to be “forward-looking statements” within the meaning of and subj
Slide 3: Key Management Team
Key Management Team Keith Donahoe, President and Chief Executive Officer • Has served as President of the Company since 2024 • Previously served as Regional President, Central Texas from 2022-2024 • Over 30 years of experience in the banking and financial services industry Julie Shamburger, Chief Fi
Slide 4: Southside Snapshot
Southside Snapshot Company Overview Financial Highlights ($mm) As of and for the • Founded in 1960 with headquarters in Tyler, TX As of and for the Years Ended Three Months December 31, Ended March 31, • Community-focused financial institution 2024 2025 2026 Balance Sheet • Offers a broad range of c
Slide 5: Markets of Operation
Markets of Operation # of Background and Highlights Branches 26 • Founded in 1960 in Tyler, TX East Texas • Leading deposit market share (39%) in Smith County • Tyler metropolitan area population of approximately 240,000 • Acquired Fort Worth Bancshares, Inc. ($129m in Assets) in 2007 and Dallas – F
Slide 6: Geographic Footprint
Geographic Footprint Geographic Footprint consists of 55 branches in Texas, including 12 grocery store branches 6
Slide 7: Goals for 2026
Goals for 2026 • Maintain asset quality • Continue focus on consistent customer experience across all markets and delivery channels • Increase net-interest income through organic loan & non-maturity deposit growth • Increase non-interest income through metro market expansion of wealth management ser
Slide 8: Financial Results Three Months Ended
Financial Results Three Months Ended March 31, 2026 March 31, 2025 %Chg. Net Income (in thousands) $ 23,259 $ 21,507 8.15% EPS (diluted) $ 0.78 $ 0.71 9.86% ROAE 10.96 % 10.57 % ROAA 1.10 % 1.03 % Efficiency Ratio (FTE) (1) 54.98 % 55.04 % (1) Calculated on a fully taxable-equivalent basis (FTE). Se
Slide 9: Balance Sheet Growth
Balance Sheet Growth Total Assets ($mm) Total Deposits ($mm) Loans HFI ($mm) $9,000 $7,000 $5,000 $8,000 $6,000 $4,000 $7,000 $5,000 $6,000 $3,000 $4,000 $5,000 $4,000 $3,000 $2,000 $3,000 $2,000 $2,000 $1,000 $1,000 $1,000 $0 $0 $0 22 23 24 25 26 22 23 24 25 26 22 23 24 25 26 20 20 20 20 20 20 20 2
Slide 10: Profitability
Profitability Net Income ($mm) Net Interest Income ($mm) $150.0 $250.0 $215.0 $216.1 $221.1 $212.3 $200.0 $105.0 $100.0 $86.7 $88.5 $150.0 $69.2 $100.0 $50.0 $57.7 $23.3 $50.0 $— $0.0 2022 2023 2024 2025 Q1 2026 2022 2023 2024 2025 Q1 2026 ROAA ROATCE(1) Efficiency Ratio (FTE)(1) 1.43% 18.56% 53.5%
Slide 11: Quarterly Yield & Cost Trends
Quarterly Yield & Cost Trends 3.01% 2.98% 3.00% 2.95% 2.94% 2.86% 2.80% 2.60% 2.50% 2.46% 2.43% 2.38% 2.38% 2.40% 2.36% 2.31% 2.27% 2.26% 2.20% 2.20% 3/31/2025 6/30/2025 9/30/2025 12/31/2025 03/31/2026 (1)(2) (1)(2) (1) Net Interest Spread (FTE) Net Interest Margin (FTE) Cost of Funds (1) Annualized
Slide 12: Loan Portfolio
Loan Portfolio Loan Balances Loans 3/31/2026 Loans to Individuals, 1% $5,000 8.00% Construction, 13% Municipal Loans, 7% Commercial Loans, 9% 1-4 Family $4,000 7.50% Residential, 14% $3,000 7.00% $2,000 6.50% Commercial RE, 56% $1,000 6.00% Loan Type $mm % $0 5.50% Real Estate Loans (RE): Q1'25 Q2'2
Slide 13: Asset Quality Trends
Asset Quality Trends NPAs / Loans and OREO(1)(2) Nonaccrual Loans / Loans(1) 0.22% 0.79% 0.19% 0.26% 0.09% 0.09% 0.07% 0.08% 0.20% 0.07% 2022 2023 2024 2025 Q1 2026 2022 2023 2024 2025 Q1 2026 NCOs / Average Loans ALLL / NPLs(1) 1,408.4% 0.06% 0.06% 1,093.6% 479.1% 0.04% 0.02% 341.4% 0.01% 118.7% 20
Slide 14: Securities Portfolio
Securities Portfolio Total Securities Securities 3/31/2026 $3,000 5.00% Commercial, —% 4.50% $2,000 4.00% Residential, 53% 3.50% $1,000 3.00% State & Political subdivisions, 43% 2.50% Corporate Bonds $— 2.00% & Other, 4% Q1'25 Q2'25 Q3'25 Q4'25 Q1'26 Securities ($mm) HTM(1) AFS Total % State & Polit
Slide 15: Deposit Composition
Deposit Composition Deposit Balances and Rates Deposit Mix 3/31/2026 3.50% Jumbo Time, 17% $6,000 Interest Bearing 3.00% Demand, 51% Retail Time, 2% $5,000 2.50% Savings, 10% $4,000 2.00% $3,000 1.50% Noninterest Bearing, 20% $2,000 1.00% $1,000 Deposits $ MM % 0.50% Interest Bearing Demand $ 3,490
Slide 16: Capital Resources and Liquidity
Capital Resources and Liquidity As of March 31, 2026 Total Available for (in thousands) Line of Credit Borrowings Future Liquidity Swapped FHLB advances $ 2,534,622 $ 315,943 $ 2,218,679 $ — Federal Reserve discount window 649,350 265,000 384,350 230,000 Correspondent bank lines of credit 80,000 — 8
Slide 17: Capital Ratios
Capital Ratios Bank Only 20.00% 17.50% 16.66% 16.84% 16.66% 16.01% 16.15% 16.01% 15.35% 15.35% 15.00% 11.67% 11.42% 10.55% 10.00% 5.00% —% Leverage Ratio Tier 1 Capital Total Capital Common Equity Tier 1 Consolidated 20.00% 10.0% 18.54% 16.95% 16.49% 15.00% 14.07% 13.88% 13.66% 13.04% 12.87% 12.68%
Slide 18: Dividends
Dividends • Southside has Paid a Cash Dividend Every Year Since 1970 and for 115 Consecutive Quarters • Consistent Record of Dividend Increases $1.75 $1.50 $1.42 $1.44 $1.44 $1.40 $1.37 $1.30 $1.26 $1.25 $1.20 $1.11 $1.11 $1.00 $1.01 $1.00 $0.96 $0.90 $0.91 $0.85 $0.75 $0.75 $0.72 $0.60 $0.50 $0.25
Slide 19: Shareholder Returns
Shareholder Returns Tangible Book Value per Common Share(1) ($) Diluted Earnings Per Common Share ($) $3.26 $21.72 $21.94 $2.82 $2.91 $20.05 $18.82 $17.13 $2.29 $0.78 2022 2023 2024 2025 Q1 2026 2022 2023 2024 2025 Q1 2026 (1) See Non-GAAP Reconciliation 19
Slide 20: Appendix
Appendix 20 20
Slide 21: Non-GAAP Reconciliation
Non-GAAP Reconciliation This presentation contains certain financial information determined by methods other than in accordance with accounting principles generally accepted in the United States (GAAP). These include return on average tangible common equity and the following fully taxable equivalent
Slide 22: Non-GAAP Reconciliation (continued)
Non-GAAP Reconciliation (continued) As of and for the Three Months Ended, (dollars in thousands, except per share data) 3/31/2025 6/30/2025 9/30/2025 12/31/2025 3/31/2026 Net income available to common shareholders $ 21,507 $ 21,813 $ 4,913 $ 20,987 $ 23,259 Plus: After-tax amortization expense 176
Slide 23: Non-GAAP Reconciliation (continued)
Non-GAAP Reconciliation (continued) As of and for the Year Ended December 31, (dollars in thousands, except per share data) 2022 2023 2024 2025 Net income available to common shareholders $ 105,020 $ 86,692 $ 88,494 $ 69,220 Plus: After-tax amortization expense 1,796 1,341 925 586 Adjusted net incom
Slide 24: Gulf South Bank Conference May 18, 2026
NYSE & NYSE Texas: SBSI Gulf South Bank Conference May 18, 2026 24
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