Southside Bancshares, Inc. · NYSE:SBSI

Southside Bancshares — Raymond James Conference 2026

25 slides from Southside Bancshares's conference presentation, Sep 9, 2026

  1. Slide 1: US Bank and Banking on Tech

    NYSE & NYSE Texas: SBSI US Bank and Banking on Tech Raymond James Conference September 9, 2026 1

  2. 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

  3. 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

  4. Slide 4: Southside Snapshot

    Southside Snapshot Company Overview Financial Highlights ($mm) • Founded in 1960 with headquarters in Tyler, TX As of and for the Years Ended Six Months December 31, Ended June 30, • Community-focused financial institution 2024 2025 2026 Balance Sheet • Offers a broad range of consumer, commercial a

  5. 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

  6. Slide 6: Geographic Footprint

    Geographic Footprint Geographic Footprint consists of 55 branches in Texas, including 12 grocery store branches 6

  7. 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 noninterest income through metro market expansion of wealth management serv

  8. Slide 8: Financial Results Three Months Ended

    Financial Results Three Months Ended June 30, 2026 June 30, 2025 %Chg. Net Income (in thousands) $ 26,837 $ 21,813 23.03% EPS (diluted) $ 0.90 $ 0.72 25.00% ROAE 12.33 % 10.73 % ROAA 1.23 % 1.07 % Efficiency Ratio (FTE) (1) 52.96 % 53.70 % (1) Calculated on a fully taxable-equivalent basis (FTE). Se

  9. Slide 9: Financial Results Six Months Ended

    Financial Results Six Months Ended June 30, 2026 June 30, 2025 %Chg. Net Income (in thousands) $ 50,096 $ 43,320 15.64% EPS (diluted) $ 1.68 $ 1.42 18.31% ROAE 11.65 % 10.65 % ROAA 1.16 % 1.05 % Efficiency Ratio (FTE) (1) 53.97 % 54.36 % (1) Calculated on a fully taxable-equivalent basis (FTE). See

  10. Slide 10: 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

  11. Slide 11: Profitability

    Profitability Net Income ($mm) Net Interest Income ($mm) $150.0 $250.0 $212.3 $215.0 $216.1 $221.1 $105.0 $200.0 $100.0 $86.7 $88.5 $150.0 $69.2 $115.0 $50.1 $100.0 $50.0 $50.0 $— $0.0 2022 2023 2024 2025 YTD Q2 2022 2023 2024 2025 YTD Q2 2026 2026 ROAA ROATCE(1) Efficiency Ratio (FTE)(1) 1.43% 18.5

  12. Slide 12: Quarterly Yield & Cost Trends

    Quarterly Yield & Cost Trends 3.01% 2.98% 3.00% 2.95% 2.94% 2.90% 2.80% 2.60% 2.46% 2.43% 2.40% 2.38% 2.38% 2.40% 2.36% 2.31% 2.27% 2.26% 2.26% 2.20% 6/30/2025 9/30/2025 12/31/2025 03/31/2026 06/30/2026 (1)(2) (1)(2) (1) Net Interest Spread (FTE) Net Interest Margin (FTE) Cost of Funds (1) Annualize

  13. Slide 13: Loan Portfolio

    Loan Portfolio Loan Balances Loans 6/30/2026 Loans to Individuals, 1% $5,000 7.00% Municipal Loans, 7% Construction, 12% Commercial Loans, 9% 6.50% 1-4 Family $4,000 Residential, 15% 6.00% $3,000 5.50% Commercial $2,000 RE, 49% Commercial 5.00% Owner-Occupied, 7% $1,000 4.50% Loan Type $mm % Real Es

  14. Slide 14: 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 Q2 2026 2022 2023 2024 2025 Q2 2026 NCOs / Average Loans ALLL / NPLs(1) 1,408.4% 0.06% 0.06% 1,093.6% 0.04% 471.2% 0.02% 0.02% 341.4% 118.7% 20

  15. Slide 15: Securities Portfolio

    Securities Portfolio Total Securities Securities 6/30/2026 Commercial, —% $3,000 5.00% 4.50% Residential, 52% $2,000 4.00% 3.50% State & Political $1,000 3.00% subdivisions, 44% 2.50% Corporate Bonds & Other, 4% $— 2.00% Q2'25 Q3'25 Q4'25 Q1'26 Q2'26 Securities ($mm) HTM(1) AFS Total % State & Polit

  16. Slide 16: Deposit Composition

    Deposit Composition Deposit Balances and Rates Deposit Mix 6/30/2026 3.50% Jumbo Time, 19% $6,000 Interest Bearing Demand, 44% 3.00% $5,000 Retail Time, 2% 2.50% $4,000 Savings, 12% 2.00% $3,000 1.50% Noninterest $2,000 Bearing, 23% 1.00% $1,000 Deposits $ MM % 0.50% Interest Bearing Demand $ 2,739

  17. Slide 17: Capital Resources and Liquidity

    Capital Resources and Liquidity As of June 30, 2026 Total Available for (in thousands) Line of Credit Borrowings Future Liquidity Swapped FHLB advances $ 2,627,618 $ 995,848 $ 1,631,770 $ 325,000 Federal Reserve discount window 634,271 355,000 279,271 290,000 Correspondent bank lines of credit 80,00

  18. Slide 18: Capital Ratios

    Capital Ratios Bank Only 20.00% 17.50% 17.10% 16.66% 16.28% 16.66% 16.28% 16.15% 15.35% 15.35% 15.00% 11.67% 11.43% 10.55% 10.00% 5.00% —% Leverage Ratio Tier 1 Capital Total Capital Common Equity Tier 1 Consolidated 20.00% 18.54% 10.0% 17.14% 16.49% 15.00% 14.07% 13.88% 13.87% 13.04% 12.87% 12.90%

  19. Slide 19: 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

  20. Slide 20: Shareholder Returns

    Shareholder Returns Tangible Book Value per Common Share(1) ($) Diluted Earnings Per Common Share ($) $22.84 $3.26 $21.72 $20.05 $2.82 $2.91 $18.82 $17.13 $2.29 $1.68 2022 2023 2024 2025 Q2 2026 2022 2023 2024 2025 YTD Q2 2026 (1) See Non-GAAP Reconciliation 20

  21. Slide 21: Appendix

    Appendix 21 21

  22. Slide 22: 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

  23. Slide 23: Non-GAAP Reconciliation (continued)

    Non-GAAP Reconciliation (continued) As of and for the Three Months Ended, (dollars in thousands, except per share data) 6/30/2025 9/30/2025 12/31/2025 3/31/2026 6/30/2026 Net income available to common shareholders $ 21,813 $ 4,913 $ 20,987 $ 23,259 $ 26,837 Plus: After-tax amortization expense 157

  24. Slide 24: Non-GAAP Reconciliation (continued)

    Non-GAAP Reconciliation (continued) As of and for the Six Months As of and for the Year Ended December 31, Ended June 30, (dollars in thousands, except per share data) 2022 2023 2024 2025 2025 2026 Net income available to common shareholders $ 105,020 $ 86,692 $ 88,494 $ 69,220 $ 43,320 $ 50,096 Plu

  25. Slide 25: US Bank and Banking on Tech

    NYSE & NYSE Texas: SBSI US Bank and Banking on Tech Raymond James Conference September 9, 2026 25

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