2026 Third Quarter Investor Presentation

Exhibit 99.1

October 2026

Focused commercial bank, diversified across verticals and geographic markets

Differentiated strategies delivering growth

Empowered associates providing industry-leading service, supported by digital technology solutions

Tenured and experienced management team

Strong capital foundation and consistent history of delivering results

3

Deposit and SBA loan production offices across the country

Las Vegas

Kansas City

St. Louis

Los Angeles

San Diego

New Mexico Phoenix

Differentiated Business Model

Regional National

Dallas*

Commercial Lending

• C&I focus

• Business banking

• CRE lending

• Blend of stable and growth MSAs

  Commercial Deposits

• Highly productive network of 54 branches with $203M2 average deposits per branch

• Complete and easy-to-use cash management services

  Lending Verticals

  • SBA 7(a) lending

  • Sponsor finance

  • Tax credits

  • Life insurance premium finance

    Deposit Verticals

    • Community associations

    • Property management

    • Third party escrow

    • Trust services

Focused on privately owned businesses and business owners

Note: 3Q26 data; *Loan production office

1A Non-GAAP Measure, Refer to Appendix for Reconciliation 5

2Excluding national deposit verticals

2012

and earlier

2013 - 2026 2027

and beyond

ROAA: 0.78%

(2012)

Midwest-focused FDIC-assisted acquisitions

1.24%

(2025)

Expanded deposit base

Expanded footprint through five acquisitions

Delivered performance improvements

Tackled challenges, including COVID and bank liquidity crisis

Aligned incentives

Diversified across geographies and verticals

Consistent growth

Compounding tangible book value per common share

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West 8%

Deposit Verticals 28%

Midwest 46%

Southwest 18%

by Region

by Type

Interest-Bearing Demand Accounts

25%

DDA 33%

CD 11%

MMA & Savings 31%

Total Deposits

Note: 3Q26 data 7

by Region1

by Product Type $12.3B

West 16%

Specialty 36%

Midwest 27%

Southwest 21%

Total Loans

CRE-OO 20%

CRE-IO 26%

Other 1%

Residential 3%

C&I 44%

Construction 6%

Note: 3Q26 data 8

1Excludes "Consumer" loans

To be a company where our associates are proud to work, that delivers ease of navigation to our customers and value to our investors, while helping our communities flourish.

Guiding people to a lifetime of

financial success.

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Average tenure:

16 years

Jim Lally Keene Turner Doug Bauche Kevin Handley

Average industry experience:

24 years

58, President & CEO, EFSC Enterprise Tenure: 22 years

47, SEVP, CFO & COO, EFSC

Enterprise Tenure: 13 years

56, SEVP, Chief Banking Officer, Enterprise Bank & Trust Enterprise Tenure: 26 years

57, SEVP, Chief Credit Officer, Enterprise Bank & Trust Enterprise Tenure: 8 years

Bridget Huffman Nicole Iannacone Mark Ponder

44, SEVP, Chief Risk Officer, Enterprise Bank & Trust Enterprise Tenure: 15 years

46, SEVP, Chief Legal Officer, Enterprise Bank & Trust Enterprise Tenure: 12 years

56, SEVP, Chief Administrative Officer, Enterprise Bank & Trust

Enterprise Tenure: 14 years 10

• Focus on process excellence, automation, and scale:

  • Continuing technology investments

  • Focus on client experience enhancement

• Relentless cost discipline

• Top quartile1 performance (3Q26)

  Net Interest Margin

  3.41%

  4.29%

  2021 2 3Q26 YTD

  13Q26 results for the KRX index available as of October 22, 2026. All figures are as reported by S&P. 11

  2The year preceding the Federal Open Market Committee raising the target federal funds rate by 525 basis points.

  Effective Risk Management as a Key Enabler

  Approach

  • Strong credit process

  • Effective controls

  • High quality assets

  • Well positioned for different rate environments

    Managing risk

  • Diversification across asset classes, geography, and industry

  • Reducing agriculture exposure over time

  • Well managed CRE concentration

Key Performance Metrics (3Q26)

Nonperforming Loans/Loans 0.71%

Nonperforming Assets/Assets1 1.03%

Allowance Coverage Ratio 1.17%; 1.27%

adjusted for guaranteed loans2

Net Charge-Offs

$11.0 million QTD

1Includes $146.9 million in nonperforming assets collateralized by real estate (approximately 83 basis points) 12

2A Non-GAAP Measure, Refer to Appendix for Reconciliation

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1a. Well-Positioned in Attractive Markets

Region Total Deposits ($B) Total Loans ($B) Market Profile Metro

St. Louis

Midwest $6.9 $3.3 Stable

Kansas City

Stable Albuquerque2

Southwest $2.7 $2.6

Growth

Phoenix3 Dallas Las Vegas

Significant opportunities for growth and share gain in our markets

$4.2

$15.1

Los Angeles

San Diego

Growth

$2.0

$1.3

West

Deposit Verticals / Specialty Lending

Total

$4.41

$12.3

Note: 3Q26 data

1Specialty Lending includes "Consumer" Loans 15

2The Combined Statistical Area includes Albuquerque-Santa Fe-Los Alamos

3The Combined Statistical Area includes Phoenix-Mesa and Tucson-Nogales

Midwest 46%

Deposit Verticals 28%

Deposit Verticals

21%

43%

36%

Legal Industry and Escrow Services

$901 million in deposits. Product lines providing services to independent escrow and non-depository trust companies

Total Deposits

West 8%

Southwest 18%

Property Management

$1.8 billion in deposits. Specializing in the compliance of Property Management Trust Accounts

Community Associations

$1.5 billion in deposit accounts. Specifically designed to serve the needs of community associations

Note: 3Q26 data

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SBA Loans

Remaining Portfolio 67%

10%

11%

6%

6%

• $1.2B in loans outstanding in SBA 7(a) loans, including $947M guaranteed

• We remain a top 25 SBA 7(a) lender nationally

• 1 of 8 lenders in a lower risk profile designated by the SBA -73 lenders in peer group (portfolio size >=$350MM)

  Life Insurance Premium Finance

• $1.4B in loans outstanding related to high-net-worth estate planning

  Sponsor Finance

• $714M in M&A related loans outstanding, partnering with SBIC and PE firms

  Tax Credit Programs

• $750M in loans outstanding related to Federal, Historic, and Affordable Housing tax credits

• $433M in Federal & State New Market Tax Credits awarded to date

Total Loans

Lending verticals provide a competitive advantage, risk-adjusted pricing, and fee income opportunities

Note: 3Q26 data 17

Strategic Credit Transformation for High Growth IT Procurement Firm

OPPORTUNITY

High growth firm sought scalable financial strategy to support North American and Indian expansion

• Client needed an aligned funding structure to effectively bridge enterprise payment terms across their footprint

• Client required a strategic banking relationship to match the accelerating pace of their operational scaling

  SOLUTION

  Enterprise provided enhanced financial flexibility with a highly scalable credit line

• Enterprise enabled faster access to working capital when needed, helping execute large customer engagements

• Enterprise supported long term expansion initiatives, including facilities growth and future development plans

  RESULTS

  Optimized cash flow structure that acts as a continuous catalyst for global firm growth

• "Enterprise gives us the flexibility to confidently support growth, customer delivery timelines and strategic expansion initiatives"

-Business Owner

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1. High-Quality Talent Additions Through Focused Efforts

   42 Producers Opportunistically Hired: Adds Density and Capability in Focus Geographies

   6: Los Angeles

   8: San Diego

   18: Phoenix & Las Vegas*

   10: Mid-Cities, TX, KS*

   Additional talent delivering deposit and loan growth

   Talent acquisitions between 2021 & 3Q26 19

   *Additions related to branch acquisition totaled 13 for Phoenix and 4 for KS, respectively

2. Best-In-Class Technology

Client life cycle supported by a competitive digital product set

TARGET

Identifying and reaching the right people

ONBOARD

Setting clients up for a smooth transition

SERVICE

Meeting needs to deliver a positive experience

PROTECT

Securing sensitive data

GROW

Scaling great work for greater impact

AI

Leveraging existing partnerships to work smarter

Leading technology solutions support growth and deliver best-in-class client experience

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