Gulf South Bank Conference (05/18/2026 00: 00

Published: 2026-05-18 10:36:19 ET SBSI

Published on 05/18/2026 at 10:36 am EDT

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

Keith Donahoe, President and Chief Executive Officer

Chief Accounting Officer of Southside Bank from 2011-2016

Over 40 years with Southside

Julie Shamburger, Chief Financial Officer

Prior to Southside, served as Head of Commercial Real Estate at another Texas public bank

Over 40 years of experience in the banking and financial services industry

Curtis Burchard, Chief Lending Officer

Board member of William Mann Community Development Corporation

11 years with Southside and over 35 years of experience in the banking and financial services industry

TL Arnold, Chief Credit Officer

EVP and Associate Chief Operations Officer from 2024-2025

Over 20 years in the banking and financial services industry

Mitchell Craddock, Chief Operations Officer

Chief Risk Officer of Southside from 2016-2024

26 years with Southside

Suni Davis, Chief Treasury Officer

Key Management Team

Company Overview

Financial Highlights ($mm)

Southside Snapshot

As of and for the Years Ended December 31,

Three Months Ended March 31,

2024

2025

2026

Balance Sheet

Total Assets

$ 8,517

$ 8,515

$ 8,802

Total Loan (EX HFS)

4,662

4,818

4,946

Total Deposits

6,654

6,865

6,874

Total Equity

812

848

855

Profitability

ROAA

1.06

0.83 %

1.10 %

ROATCE(2)

14.92

11.22

14.39

Net Interest Margin(2)(3)

2.88

2.93

3.01

Efficiency Ratio(2)(3)

53.52

53.48

54.98

Capital

TCE/TA(2)

7.33

7.77 %

7.59 %

Common Equity Tier 1 Ratio

13.04

12.87

12.68

Tier 1 Risk-Based Ratio

14.07

13.88

13.66

Total Risk-Based Ratio

16.49

18.54

16.95

Leverage Ratio

9.67

9.72

9.74

Asset Quality

NPAs/Loans and Oreo

0.08

0.79 %

0.20 %

NCOs/Avg Loans

0.04

0.06

0.01

Reserve/ Total Loans

0.96

0.94

0.93

Reserve/NPLs

1,408.35

118.70

479.13

Per Common Share

Tangible Book Value(2)

$ 20.05

$ 21.72

$ 21.94

Diluted Earnings

2.91

2.29

0.78

Founded in 1960 with headquarters in Tyler, TX

Community-focused financial institution

Offers a broad range of consumer, commercial and mortgage banking services, as well as private banking, wealth management and trust services, and brokerage services

Awarded one of the "Best Banks to Work For" in 2025, for the fourth consecutive year, by American Banker

Diversified branch footprint consisting of 55 branches, 12 of which are located in grocery stores

794 Full-Time Equivalent Employees

Insider ownership equal to 3.29%(1)

Experienced Management Team, each with over 20 years of experience in Banking

Strong asset quality, with NPA to Total Assets of 0.11%

Source: Bloomberg as of 4/27/2026

See Non-GAAP Reconciliation

Calculated on a fully taxable-equivalent basis (FTE)

# of Branches

Background and Highlights

Markets of Operation

East Texas

Founded in 1960 in Tyler, TX

Leading deposit market share (39%) in Smith County

Tyler metropolitan area population of approximately 240,000

Dallas - Fort Worth

Acquired Fort Worth Bancshares, Inc. ($129m in Assets) in 2007 and OmniAmerican Bancorp, Inc. ($1.4b in Assets) in 2014

#1 largest MSA in Texas and #4 in U.S.

21 Fortune 500 Companies

Southeast Texas

Acquired Diboll State Bancshares, Inc. ($1.0b in Assets) in 2017

Leading deposit market share (26%) in Angelina County

Lufkin metropolitan area population of approximately 90,000

Austin

Expanded footprint to Austin with LPO acquired through Fort Worth Bancshares, Inc. transaction in 2007, became a full service branch in 2011

#4 largest MSA in Texas

Houston

#2 largest MSA in Texas and #5 in the US

Expanded market presence with a full service branch in The Woodlands in 2026

26 Fortune 500 Companies

Source: FDIC (as of 6/30/2025), S&P Market Intelligence, Fortune Magazine

Geographic Footprint

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

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 services

Identify potential acquisition targets

Further enhance digital/technology strategies specifically related to operational efficiencies

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 %

Financial Results Three Months Ended

Total Assets ($mm) Total Deposits ($mm) Loans HFI ($mm)

$9,000

$7,000

$5,000

$8,000

$7,000

$6,000

$5,000

$4,000

$5,000

$4,000

$3,000

$4,000

$3,000

$2,000

$3,000

$2,000

$1,000

$2,000

$1,000

2022

2023

2024

2025

Q1 2026

2022

2023

2024

2025

Q1 2026

2022

2023

2024

2025

Q1 2026

$0 $0 $0

Balance Sheet Growth

Net Income ($mm) Net Interest Income ($mm)

$150.0

$100.0

$50.0

$105.0

$86.7 $88.5

$69.2

$23.3

$250.0

$200.0

$150.0

$100.0

$50.0

$212.3 $215.0 $216.1 $221.1

$57.7

2022 2023 2024 2025 Q1 2026

$0.0

2022 2023 2024 2025 Q1 2026

ROAA ROATCE(1) Efficiency Ratio (FTE)(1)

1.11%

1.06%

1.10%

0.83%

1.43%

18.56%

53.5% 53.5%

51.3%

55.0%

16.03%

14.92%

14.39%

11.22%

47.4%

2022

2023

2024

2025

2022

2023

2024

2025

2022

2023

2024

2025

2026

Calculated on a fully taxable-equivalent basis (FTE). See Non-GAAP Reconciliation. 10

Profitability

2.98%

3.01%

2.95%

2.94%

2.86%

2.50%

2.43%

2.46%

2.38%

2.36%

2.31%

2.27%

2.26%

2.20%

3.00%

2.80%

2.60%

2.40%

2.20%

3/31/2025 6/30/2025 9/30/2025 12/31/2025 03/31/2026

(1)(2) (1)(2) (1)

Annualized

Calculated on a fully taxable-equivalent basis (FTE), a non-GAAP measure. See non-GAAP reconciliation.

Quarterly Yield & Cost Trends

Loan Balances

Loans 3/31/2026

$5,000

$4,000

8.00%

7.50%

Loans to Individuals, 1% Municipal Loans, 7%

Commercial Loans, 9%

Construction, 13%

1-4 Family

Residential, 14%

$3,000 7.00%

$2,000 6.50%

$1,000

6.00%

Commercial RE, 56%

Q1'25 Q2'25 Q3'25 Q4'25 Q1'26

5.50%

Loan Type $mm %

Real Estate Loans (RE):

Construction $ 642 13 %

1-4 Family Residential 717 14 %

Construction

Commercial RE Municipal Loans

1-4 Family Residential

Commercial Loans Loans to Individuals

Commercial RE 2,753 56 %

Commercial Loans 457 9 %

Average Yield

Municipal Loans

337

7 %

Loans to Individuals

1 %

Total

$ 4,946

100 %

Loan Portfolio

NPAs / Loans and OREO(1)(2)

Nonaccrual Loans / Loans(1)

Asset Quality Trends

0.22%

0.19%

0.09%

0.07%

0.79%

0.26%

0.09%

0.08%

0.20%

2022 2023 2024 2025 Q1 2026

NCOs / Average Loans ALLL / NPLs(1)

1,408.4%

1,093.6%

479.1%

341.4%

118.7%

0.06% 0.06%

0.04%

0.02%

0.01% 2022 2023 2024 2025 Q1 2026

2022 2023 2024 2025 Q1 2026

Pursuant to our adoption of ASU 2022-02, effective January 1, 2023, we prospectively discontinued the recognition and measurement guidance previously required on troubled debt restructures. As a result, non-performing loans (NPLs) beginning March 31, 2023 exclude any loan modifications that are performing but would have previously required disclosure as troubled debt restructures.

Nonperforming assets increased during 2025 primarily due to an increase of $27.5 million in restructured loans due to an extension of maturity on a CRE loan to allow for an extended lease up period. The CRE loan paid off in the first quarter of 2026.

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%

Q1'25 Q2'25 Q3'25 Q4'25 Q1'26

2.00%

Corporate Bonds

& Other, 4%

State & Political subdivisions $

1,044

$ 173

$ 1,217

43 %

Corporate Bonds & Other

111

4 %

Residential

1,454

1,529

53 %

Commercial

Securities ($mm) HTM(1) AFS Total %

Total $ 1,221 $ 1,647 $ 2,868 100 %

(1) Presented at Net Carrying Amount, which includes allowance for credit losses of $25,000 for State and Political subdivisions.

Securities Portfolio

Deposit Balances and Rates

Deposit Mix 3/31/2026

$6,000

$5,000

$4,000

3.50%

3.00%

2.50%

2.00%

Retail Time, 2%

Savings, 10%

Jumbo Time, 17%

Interest Bearing Demand, 51%

$3,000

$2,000

1.50%

1.00%

Noninterest Bearing, 20%

$1,000

0.50%

Deposits $ MM %

$- -%

Q1'25 Q2'25 Q3'25 Q4'25 Q1'26

Interest Bearing Demand

$ 3,490

51 %

Noninterest Bearing

1,374

20 %

Savings

701

10 %

Retail Time

154

2 %

Jumbo Time

1,155

17 %

Total $ 6,874 100 %

Deposit Composition

As of March 31, 2026 (in thousands)

Line of Credit

Borrowings

Total Available for 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

Total liquidity lines

$ 3,263,972

$ 580,943

$ 2,683,029

$ 230,000

Liquidity sources remain strong, with $2.68 billion in liquidity lines available as of March 31, 2026.

Capital Resources and Liquidity

Bank Only

20.00%

15.35%

16.01%

16.15%

15.35%

16.01%

11.67% 11.42%

10.55%

15.00%

16.66% 17.50% 16.84%

16.66%

10.00%

5.00%

Leverage Ratio Tier 1 Capital Total Capital Common Equity Tier 1

Consolidated

20.00%

18.54%

16.49%

16.95%

14.07% 13.88% 13.66%

13.04% 12.87% 12.68%

9.67% 9.72% 9.74%

15.00%

10.00%

5.00%

Leverage Ratio Tier 1 Capital Total Capital Common Equity Tier 1

Well Capitalized

Capital Adequacy

Capital Ratios

Southside has Paid a Cash Dividend Every Year Since 1970 and for 115 Consecutive Quarters

Consistent Record of Dividend Increases

$1.75

$1.50

$1.25

$1.00

$0.75

$0.60

$0.75

$0.85

$0.90

$1.11

$0.91

$0.96

$1.00 $1.01

$1.11

$1.20

$1.26

$1.30

$1.40 $1.42 $1.44 $1.44

$1.37

$0.72

$0.50

$0.25

$0.00

2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 Q2

2026

Dividends

Tangible Book Value per Common Share(1) ($)

Diluted Earnings Per Common Share ($)

$17.13

$18.82

$20.05

$21.72 $21.94

2022 2023 2024 2025 Q1 2026

$3.26

$2.82

$2.91

$2.29

$0.78

2022 2023 2024 2025 Q1 2026

(1) See Non-GAAP Reconciliation

Shareholder Returns

2200

Disclaimer

Southside Bancshares Inc. published this content on May 18, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on May 18, 2026 at 14:35 UTC.