425

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) 

January 25, 2019

ENTERPRISE FINANCIAL SERVICES

CORP

(Exact name of registrant as specified in its charter)

Delaware	001-15373	43-1706259
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)

150 N. Meramec, St. Louis, Missouri (Address of principal executive offices) 63105 (Zip Code)

Registrant's telephone number, including area code 

(314) 725-5500

Not applicable 

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

x    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company [ ]

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. [ ]

Item 7.01. Regulation FD Disclosure.

On January 28, 2019, Enterprise Financial Services Corp (the "Company") is presenting the materials attached to this report as Exhibit 99.1 in meetings with certain investors and analysts. Additionally, the Company is presenting the materials attached to this report as Exhibit 99.1 in meetings with certain investors and analysts during the first quarter of 2019.

Item 8.01. Other Events.

For the purposes of Rule 425 under the Securities Act of 1933, as amended (the “Securities Act”), only that information contained in the presentation furnished herewith as Exhibit 99.1 relating solely to the proposed merger between the Company and Trinity Capital Corporation is being filed under this Item 8.01.

Forward-Looking Statements

In addition to the historical information contained herein, this communication contains “forward-looking statements” within the meaning of, and intended to be covered by, the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include, but are not limited to, statements about the Company's plans, expectations, and projections of future financial and operating results, as well as statements regarding the Company's plans, objectives, expectations or consequences of announced transactions. Forward-looking statements are typically identified by the use of words such as “may,” “might,” “will,” “should,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” “could,” “continue,” and “intend”, and variations of such words and similar expressions. Forward-looking statements are inherently subject to risks and uncertainties that could cause actual results to differ materially from those contemplated from such statements. Factors that could cause or contribute to such differences include, but are not limited to, the Company's ability to efficiently integrate acquisitions into its operations, retain the customers of these businesses and grow the acquired operations, as well as credit risk, changes in the appraised valuation of real estate securing impaired loans, outcomes of litigation and other contingencies, exposure to general and local economic conditions, risks associated with rapid increases or decreases in prevailing interest rates, consolidation in the banking industry, competition from banks and other financial institutions, the Company's ability to attract and retain relationship officers and other key personnel, burdens imposed by federal and state regulation, changes in regulatory requirements, changes in accounting regulation or standards applicable to banks, as well as other risk factors described in the Company's 2017 Annual Report on Form 10-K and other reports filed with the SEC. Forward-looking statements speak only as of the date they are made, and the Company undertakes no obligation to update them in light of new information or future events unless required under the federal securities laws.

No Offer or Solicitation

This communication relates to a proposed merger and business combination transaction (the “Merger”) between the Company and Trinity. This communication is for informational purposes only and does not constitute an offer to sell or the solicitation of an offer to buy any new securities or a solicitation of any vote or approval, in any jurisdiction, pursuant to the Merger or otherwise, nor shall there be any sale, issuance, exchange or transfer of the securities referred to in this document in any jurisdiction in contravention of applicable law. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act.

Additional Information and Where to Find It

In connection with the proposed Merger, the Company has filed with the SEC on December 31, 2018 an amendment to the registration statement on Form S-4 (File No. 333-228751) that was originally filed on December 11, 2018 that includes a preliminary proxy statement/prospectus. The Company will also file other documents with the SEC regarding the Merger, including the definitive proxy statement/prospectus. The information in the preliminary proxy statement/prospectus is not complete and may be changed. The definitive proxy statement/prospectus will be sent to the shareholders of Trinity once the registration statement is declared effective by the SEC. This document is not a substitute for the registration statement and preliminary proxy statement/prospectus filed with the SEC, including any amendments

or supplements thereto, or any other documents that the Company may file with the SEC or that the Company or Trinity may send to stockholders of the Company or shareholders of Trinity in connection with the Merger. INVESTORS AND SECURITY HOLDERS OF THE COMPANY AND TRINITY ARE URGED TO READ THE REGISTRATION STATEMENT, THE PRELIMINARY PROXY STATEMENT/PROSPECTUS, THE DEFINITIVE PROXY STATEMENT/PROSPECTUS WHEN IT BECOMES AVAILABLE, AND ALL OTHER RELEVANT DOCUMENTS THAT ARE FILED OR WILL BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY, BECAUSE THEY CONTAIN OR WILL CONTAIN IMPORTANT INFORMATION ABOUT THE MERGER AND RELATED MATTERS. Investors and security holders are able to obtain free copies of the registration statement and the preliminary proxy statement/prospectus and all other documents filed or that will be filed with the SEC by the Company through the website maintained by the SEC at www.sec.gov.

Participants in Solicitation

The Company, Trinity and certain of their directors and executive officers may be deemed to be participants in the solicitation of proxies from the holders of Trinity’s common stock in connection with the proposed Merger. Information about the directors and executive officers of the Company is set forth in the proxy statement for the Company’s 2018 annual meeting of shareholders, as filed with the SEC on a Schedule 14A on March 14, 2018 and as amended by supplements to the proxy statement filed with the SEC on March 14, 2018, March 30, 2018, and April 19, 2018. Information about the directors and executive officers of Trinity is set forth in the proxy statement for Trinity’s 2018 annual meeting of shareholders, as filed with the SEC on a Schedule 14A on April 20, 2018. Additional information regarding the interest of those participants and other persons who may be deemed participants in the Merger may be obtained by reading the preliminary proxy statement/prospectus, the definitive proxy statement/prospectus when it becomes available, and other relevant documents filed with the SEC regarding the Merger when they become available. Free copies of these documents may be obtained as described above.

Item 9.01.     Financial Statements and Exhibits.

(d)     Exhibits.

Exhibit     

NumberDescription

99.1 Exhibit materials being presented in meetings with certain investors and analysts. These materials are being furnished pursuant to Item 7.01 hereof.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		ENTERPRISE FINANCIAL SERVICES CORP
Date:	January 25, 2019	By:	/s/Mark G. Ponder
			Mark G. Ponder
			Senior Vice President and Controller

INDEX TO EXHIBITS

Exhibit No.        Description

-------------        --------------

99.1            Exhibit materials being presented in meetings with certain investors and analysts. These materials are being furnished pursuant to Item 7.01 hereof.*

*This exhibit is furnished to, but not filed with, the Commission by inclusion herein.

EX-99.1

EXHIBIT 99.1 Filed by Enterprise Financial Services Corp Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-6(b) of the Securities Exchange Act of 1934 Subject Company: Trinity Capital Corporation Commission File No.: 001-15373 Enterprise Financial Services Corp Fourth Quarter 2018 Investor Presentation

Forward-Looking Statements Some of the information in this report contains “forward-looking statements” within the meaning of and intended to be covered by the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements typically are identified with use of terms such as “may,” “might,” “will, “should,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” “could,” “continue” and the negative of these terms and similar words, although some forward-looking statements may be expressed differently. Forward-looking statements also include, but are not limited to, statements regarding plans, objectives, expectations or consequences of announced transactions and statements about the future performance, operations, products and services of the Company and its subsidiaries. Our ability to predict results or the actual effect of future plans or strategies is inherently uncertain. You should be aware that our actual results could differ materially from those anticipated by the forward-looking statements or historical performance due to a number of factors, including, but not limited to: our ability to efficiently integrate acquisitions into our operations, retain the customers of these businesses and grow the acquired operations; reputational risks; credit risk; changes in the appraised valuation of real estate securing impaired loans; outcomes of litigation and other contingencies; exposure to general and local economic conditions; risks associated with rapid increases or decreases in prevailing interest rates; consolidation within the banking industry; competition from banks and other financial institutions; our ability to attract and retain relationship officers and other key personnel; burdens imposed by federal and state regulation; changes in regulatory requirements; changes in accounting regulation or standards applicable to banks; and other risks discussed under the caption “Risk Factors” of our most recently filed Form 10-K and in Part II, 1A of our most recently filed Form 10-Q, all of which could cause the Company’s actual results to differ from those set forth in the forward-looking statements. Readers are cautioned not to place undue reliance on our forward-looking statements, which reflect management’s analysis and expectations only as of the date of such statements. Forward-looking statements speak only as of the date they are made, and the Company does not intend, and undertakes no obligation, to publicly revise or update forward-looking statements after the date of this report, whether as a result of new information, future events or otherwise, except as required by federal securities law. You should understand that it is not possible to predict or identify all risk factors. Readers should carefully review all disclosures we file from time to time with the Securities and Exchange Commission (the “SEC”) which are available on our website at www.enterprisebank.com under "Investor Relations." 2

Company Snapshot - EFSC Total Assets FOCUSED BUSINESS MODEL: $ 5.6 Billion • Attract Top Talent in Markets • Proven Ability to Grow Market Cap Commercial & Industrial "C&I" Talent Loans $ Billion • Product Breadth 0.9 ◦ Banking Operates in ◦ Trust & Wealth Management ◦ Treasury Management Strength Kansas City • Strong Balance Sheet with St. Louis Attractive Risk Profile Phoenix MSAs • Concentrated on Private Businesses and Owner Families Passion • Relationship Driven 3

Executive Leadership Team Name, Age, Title Years at Enterprise James B. Lally, 51, President & Chief Executive Officer, EFSC 15 Keene S. Turner, 39, Executive Vice President & Chief Financial Officer, EFSC 5 Scott R. Goodman, 55, President, Enterprise Bank & Trust 15 Douglas N. Bauche, 49, Chief Credit Officer, Enterprise Bank & Trust 18 Mark G. Ponder, 48, EVP, Chief Administrative Officer 6 Nicole M. Iannacone, 39, EVP, Chief Risk Officer & General Counsel 4 Loren E. White, 62, SVP & Head of Human Resources 4 4

Differentiated Business Model: Built for Quality Earnings Growth FocusedTarget and Well-Defined Audience TargetedTailored Array Solutions of Banking ExperiencedExpertise Bankers and StrategyFocused Aimed and at Well-Defined Business Targetedand Wealth Array Management of Banking Experienced AdvisorsBankers and Owners,Strategy Executives Aimed at andBusiness Servicesand Wealth to Meet Management our Client's Advisors Owners,Professionals. Executives and ServicesNeeds to Meet our Professionals Clients’ Needs 5

Three Urban Markets Arizona Kansas Loans $337MM $719MM $2.3B Deposits $189MM $788MM $3.6B Branches 2 7 19 Deposit Market Share 1 29th/0.22% 17th/1.28% 4th/4.45% JPMorgan Chase UMB US Bancorp Primary Competitors Wells Fargo Commerce Bank of America Bank of America Bank of America Commerce 1 Source: 9/30/2018 data, S&P Global Market Intelligence. 6

Strategic Combination with Trinity Capital Corporation (“Trinity”) Announced November 1st, 2018 Trinity Overview ▪ Headquartered in Los Alamos, New Mexico, Trinity was founded in 1963 by local investors to provide full-service banking to the community that developed around the Los Alamos National Laboratory ▪ Operates 6 branches in 3 New Mexico MSAs 98% core deposits, with substantial and defensible deposit market share in Los Alamos and Santa Fe ▪ OCC consent order and Fed written agreement lifted in 4Q17 – 1Q18, positioning Trinity to focus on growth ▪ Total Assets: $1,284 million ▪ Total Loans: $721 million (64% loans to deposits) ▪ Total Deposits: $1,124 million (15 bps cost of deposits) Transaction Value (1) (2) $213 million; approximately $38 million in cash and $175 million in EFSC stock Price / Tangible Book Value: 2.02x Transaction Transaction Pricing (1) (3) Price / 2019E EPS: 17.2x; 9.6x including fully-phased after-tax cost savings Overview Core Deposit Premium: 9.7% EPS Accretion: 2019E Operating: ~3%; 2020E GAAP: ~8% Estimated Financial Impact (4) TBVPS Earnback Period: ~3 years Source: S&P Global Market Intelligence. Financial data as of or for the quarter ending June 30th, 2018, unless otherwise noted. Announced transaction value based on EFSC’s closing share price of $43.45 on October 31st, 2018. Aggregate transaction value includes value of 7,500 restricted stock units to be retired entirely in cash at the closing purchase price per share. Tangible book value includes value of stock owned by Trinity’s ESOP; Core deposits defined as total deposits, less time deposits with balances greater than $250,000. Operating EPS excludes ~$11.7 million after-tax merger charge. 7

Focused Loan Growth Strategies 6.1% Specialized Market Segments Represent 31% of Total Portfolio Loans, Offering Competitive 10.7% Advantages, Risk Adjusted Pricing and Fee Income Opportunities. 9.6% Expectations for future growth includes continued 1.9% focus in these specialized market segments. 3.1% Total Portfolio Loans Tax Credit Programs Enterprise Value Life Insurance Aircraft Lending Agricultural Lending Lending Premium Financing $263 million in loans $82 million in loans $136 million in loans outstanding related to $466 million in M&A $418 million in loans outstanding outstanding. Federal, Historic, and related loans outstanding related to Missouri Affordable Housing outstanding, Partnering high net worth estate tax credits. $183 million in with PE firms. planning. Federal & State New Market tax credits awarded to date. 8

History of Strong C&I Growth $2,121 In Millions 15% 5-Year CAGR $1,919 $1,633 $1,484 $1,264 $1,042 Q4 '13 Q4 '14 Q4 '15 Q4 '16 Q4 '17 Q4 '18 9

Buying Process 10

Customer Focus Source: Greenwich Associates 11

Portfolio Loan Trends 7% Portfolio Loan Growth In Millions $4,333 $4,252 $4,250 $4,162 $4,067 Q4' 17 Q1' 18 Q2' 18 Q3' 18 Q4' 18 12

Drivers of Loan Growth December 31, 2016 – December 31, 2017 December 31, 2017 – December 31, 2018 $949 Million $266 Million General Commercial & Industrial Commercial/Construction RE 3% 11% Life Insurance Premium Finance Agriculture Life Insurance 6% 13% Premium Finance Enterprise Value Lending Tax Credits 16% 2% 8% Enterprise Value General Lending 17% Commercial & Industrial 17% Tax Credits 8% Commercial/ Construction RE JCB Acquisition 29% 70% 13

Attractive Deposit Mix Total Deposits DDA $4.6 Billion 24% • Significant DDA Composition • Stable Cost of Deposits Interest Bearing Transaction Accts • Improving Core Funding 23% In Millions 38% 27.0% 25.7% 24.7% 25.2% 24.0% 15% MMA & Savings $4,588 $4,281 $4,248 $4,156 $4,210 CD Cost of Deposits 0.95% 10% Deposit Growth Q4 2017 – Q4 2018 Q4 '17 Q1 '18 Q2 '18 Q3 '18 Q4 '18 Deposits DDA % 14

Core Funding Mix In Millions Commercial Business Banking Consumer $1,879 $494 $1,636 47% 12% 41% 17% 22% 11% 38% 17% 11% 16% 6% 32% 54% 41% 1% 4% 23% 2% 3% 1% 1% Brokered deposits: $580 15

Financial Scorecard Q4 2018 Compared to Q4 2017 219%2 Continued Growth in EPS Consistent 7% 4 bps efficiency ratio Drive Net Interest Defend Core Net Achieve Further Income Growth in Interest Margin1 Improvement in Core Dollars with Favorable Operating Leverage1 Loan Growth Trends 10% Enhance Deposit Levels to Support Growth EPS: $1.02 ROAA: 1.69% 1A Non GAAP Measure, Refer to Appendix for Reconciliation 2Q4 2017 included the impact of deferred tax asset charges due to tax reform 16

Earnings Per Share Trend - 2018 Year to Date Changes in EPS $1.11 $0.19 $0.14 $0.13 $(0.33) $0.52 $3.83 $2.07 2017 Net Interest Loan Loss Noninterest Merger Related Noninterest Income Tax 2018 Income Provision Income Expense Expense Expense 17

Earnings Per Share Trend - Q4 2018 Changes in EPS $0.09 $0.01 $0.09 $(0.04) $(0.10) $1.02 $0.97 Q3 '18 Net Interest Noninterest Noninterest Merger Related Income Tax Q4 '18 Income Income Expense Expense Expense 18

Net Interest Income Trend In Millions 3.73% 3.74% 3.75% 3.74% 3.77% $50.6 $48.1 $47.4 $46.2 $47.0 $48.5 $46.8 $47.6 $44.9 $45.4 8% Core NII Growth Q4 '17 Q1 '18 Q2 '18 Q3 '18 Q4 '18 Core Net Interest Income* Incremental Accretion On Non-core Acquired Assets FTE Core Net Interest Margin* Note: * A Non-GAAP Measure, Refer to Appendix for Reconciliation 19

Credit Trends for Loans Net Charge-offs Portfolio Loan Growth In Millions 33bps 26bps $95 23bps $90 $83 $70 6 bps (2)bps $(2) Q4 '17 Q1 '18 Q2 '18 Q3 '18 Q4 '18 Q4 '17 Q1 '18 Q2 '18 Q3 '18 Q4 '18 Net Provision for Loans Q4 2018 EFSC Peer(1) In Millions NPA’s/Assets = 0.30% 0.61% $2.9 $2.3 $2.1 NPL’s/Loans = 0.38% 0.74% $1.9 ALLL/NPL’s = 259.6% 130.4% $0.4 ALLL/Loans = 1.00% 0.98% Q4 '17 Q1 '18 Q2 '18 Q3 '18 Q4 '18 (1) Peer median data as of 9/30/2018 (source: S&P Global Market Intelligence) 20

Noninterest Income In Millions Fee Income Other Fee Income Detail $11.1 $10.7 $9.7 $2.2 $9.5 $2.8 $2.8 $0.3 $0.1 $2.3 $8.4 $0.1 $2.8 $0.2 $2.3 $0.2 $2.3 $2.8 $1.4 $1.7 $0.2 $1.0 $0.3 $0.2 $1.7 $1.8 $1.7 $1.5 $1.5 $1.8 $0.1 $0.6 $0.2 $1.4 $0.3 $0.1 $0.2 $0.4 $2.9 $2.8 $3.0 $3.0 $2.9 $2.1 $0.2 $1.3 $1.4 $1.0 $1.0 $2.2 $2.1 $2.1 $2.0 $2.0 Q4 '17 Q1 '18 Q2 '18 Q3 '18 Q4 '18 Q4 '17 Q1 '18 Q2 '18 Q3 '18 Q4 '18 Wealth Management Deposit Services Charge Miscellaneous Swap Fees Card Services Other CDE Mortgage State Tax Credits Non-core Acquired 21

Operating Expenses Trend 54% 52.4% 52.2% 50.2% 49.8% In Millions $30.7 $29.9 $29.1 $29.2 $28.3 $1.3 $0.7 $0.1 $15.3 $16.5 $16.6 $16.3 $16.6 $2.4 $2.4 $2.3 $2.4 $2.4 $10.5 $10.2 $10.3 $10.5 $10.4 Q4 '17 Q1 '18 Q2 '18 Q3 '18 Q4 '18 Other Occupancy Employee compensation and benefits Merger related expenses/other non-core expenses Core Efficiency Ratio* Note: * A Non-GAAP Measure, Refer to Appendix for Reconciliation 22

Positive Momentum in Earnings Per Share $1.02 $0.97 $0.95 $0.90 Five-Year CAGR 42% $0.69 $0.67 $0.61 $0.59 $0.56 $0.54 $0.52 $0.50 $0.48 $0.46 $0.43 $0.41 $0.36 $0.32 $0.30 $0.30 $0.18 Q4 '13 Q1 '14 Q2 '14 Q3 '14 Q4 '14 Q1 '15 Q2 '15 Q3 '15 Q4 '15 Q1 '16 Q2 '16 Q3 '16 Q4 '16 Q1 '17 Q2 '17 Q3 '17 Q4 '17 Q1 '18 Q2 '18 Q3 '18 Q4 '18 467% EPS Growth from Q4 2014 to Q4 2018 Note: Q1 and Q2 2017 included merger related charges. Q4 2017 included the impact of deferred tax asset charges due to tax reform. 23

Five-Year Financial Highlights In Thousands, except per share data 2018 2017* 2016 2015 2014 Net Interest Income $191,905 $177,304 $135,495 $120,410 $117,368 Total Noninterest Income $38,347 $34,394 $29.059 $20,675 $16,631 Net Income $89,217 $48,190 $48,837 $38,450 $27,173 Earnings Per Share (diluted) $3.83 $2.07 $2.41 $1.89 $1.35 Return on Average Tangible Common Equity 19.83% 11.63% 14.42% 12.77% 10.19% Return on Average Assets 1.64% 0.97% 1.29% 1.14% 0.86% Total Assets $5,645,662 $5,289,225 $4,081,328 $3,608,483 $3,277,003 *2017 results reduced by $12.1 million, or $0.52 per diluted share, deferred tax asset remeasurement charge due to tax reform. 24

Capital Levels Prudently Managed to Facilitate Growth and Returns In Millions ROATCE Capital Uses the Past 5 Years* 22.0% $250 $224 19.83% 20.0% $200 18.0% $142 16.0% $150 14.42% 14.0% 12.77% $100 12.0% 11.63% 10.19% $50 $41 $39 10.0% 8.0% $0 h A e s 2014 2015 2016 2017** 2018 t & as d ow M h en r rc id G u iv ep D R re ha S *For the period of 2014 to 2018 **2017 results reduced by $12.1 million, or 2.92%, deferred tax asset remeasurement charge due to tax reform. 25

Enterprise Financial • Highly Focused, Proven Business Model • Strong Track Record of Commercial Loan Growth • Differentiated Competitive Lending Expertise • Enhanced Core Funding Capabilities • Increased Returns and Enhanced Shareholder Value 3 Year 5 Year 95% 52% 37% 29% EFSC Index EFSC Index Total Shareholder Return Note: Index = S&P Global Market Intelligence U.S. Bank $5B - $10B, as of 12/31/2018 26

4th Quarter 2018 EFSC Investor Presentation Appendix

Acquisition of Jefferson County Bancshares, Inc. (JCB) Closed February 10, 2017 Snapshot • Consistent with M&A Expansion Strategy • Enhanced EFSC's footprint in the St. Louis MSA, while building total balance sheet size to $5 billion in assets • Top five deposit market share in St. Louis MSA Achievements • Successfully completed core systems conversion on May 22, 2017 • Expanded branch presence • ~$4 billion of deposits • Strengthens & diversifies core deposit gathering capabilities • Approximately $60 million in deposits per branch 28

Effective Tax Rate Reconciliation 2018 2017 Q4 2017 Federal Tax Rate 21.00% 35.00% 35.00% State Tax, Net of Federal Benefit 2.32% 1.94% 1.94% Excess Tax Benefits (1.56)% (2.47)% (1.25)% Tax Credit Investments (4.66)% (1.89)% (3.62)% Other Tax Adjustments 0.23% (2.28)% (3.90)% Pre-DTA Effective Tax Rate 17.33% 30.30% 28.17% Impact of Tax Law Changes (2.64)% 14.00% 44.30% Ending Effective Tax Rate 14.69% 44.30% 72.47% 29

Balance Sheet Positioned for Growth Modest Asset High-quality, 62% Floating Cash-flowing 8.66% Sensitivity 24.0% Rate Loans, Securities Tangible (200 BPS Non-Interest with Two-Year Portfolio with Common Rate Shock Bearing DDA to Average Four-Year Equity/Tangible Increases NII Total Deposits By 4.9%) Duration Average Assets Duration 30

Successful FDIC-Assisted Acquisition Strategy Significant Earnings Contribution (Pre-tax) Completed 4 Contributed $80 2016 2017 2018 FDIC-Assisted Million in Net Transactions Earnings Since $15,018 $8,106 $8,079 Since December Acquisition 2009 Dollars in Thousands Significant Terminated all loss share agreements with Contribution to $31 Million of the FDIC in December 2015 Future Earnings Remaining with Estimated Contractual Future Cash Flows with $16 Million Accretable Yield Early termination charge from Q4 2015 of $9 Million Carrying Value earned back 100% in Q1 2016 Accretable yield estimate as of 12/31/2018 31

Capital Management Tangible Common Equity/Tangible Assets • 2,000,000 Share Common Stock Repurchase Plan • ~ 10% of EFSC Outstanding Shares 8.69% 8.88% 8.76% 8.66% • No Specified End Date 8.14% 7.78% • Disciplined, Patient Approach Based on Market Conditions • Sufficient Capital to Support Growth Plans 2013 2014 2015 2016 2017 2018 • $0.14 1st quarter 2019 Dividend 32

Use of Non-GAAP Financial Measures The Company's accounting and reporting policies conform to generally accepted accounting principles in the United States (“GAAP”) and the prevailing practices in the banking industry. However, the Company provides other financial measures, such as net interest margin, efficiency ratios, regulatory capital ratios, and the tangible common equity ratio, in this presentation that are considered “non- GAAP financial measures.” Generally, a non-GAAP financial measure is a numerical measure of a company's financial performance, financial position, or cash flows that exclude (or include) amounts that are included in (or excluded from) the most directly comparable measure calculated and presented in accordance with GAAP. Commencing in the fourth quarter of 2018, due to declining balances in the non-core acquired loan portfolio, the Company determined to no longer report core earnings, which is a non-GAAP measure, on a full income statement presentation basis as the variance to the most directly comparable GAAP measure is now insignificant and to avoid any suggestion that such non-GAAP presentation exhibits prominence over the most directly comparable GAAP measure. The Company considers its core performance measures presented in this presentation as important measures of financial performance, even though they are non-GAAP measures, as they provide supplemental information by which to evaluate the impact of non-core acquired loans and related income and expenses, the impact of non-comparable items, and the Company's operating performance on an ongoing basis. Core performance measures include contractual interest on non-core acquired loans but exclude incremental accretion on these loans. Core performance measures also exclude the gain or loss on sale of other real estate from non-core acquired loans, and expenses directly related to the non-core acquired loans and other assets formerly covered under FDIC loss share agreements. Core performance measures also exclude certain other income and expense items, such as executive separation costs, merger related expenses, facilities charges, deferred tax asset revaluation due to U.S. corporate income tax reform, and the gain or loss on sale of investment securities, the Company believes to be not indicative of or useful to measure the Company's operating performance on an ongoing basis. The attached tables contain a reconciliation of these core performance measures to the GAAP measures. The Company believes that the tangible common equity ratio provides useful information to investors about the Company's capital strength even though it is considered to be a non-GAAP financial measure and is not part of the regulatory capital requirements to which the Company is subject. The Company believes these non-GAAP measures and ratios, when taken together with the corresponding GAAP measures and ratios, provide meaningful supplemental information regarding the Company's performance and capital strength. The Company's management uses, and believes that investors benefit from referring to, these non-GAAP measures and ratios in assessing the Company's operating results and related trends and when forecasting future periods. However, these non-GAAP measures and ratios should be considered in addition to, and not as a substitute for or preferable to, ratios prepared in accordance with GAAP. In the tables below, the Company has provided a reconciliation of, where applicable, the most comparable GAAP financial measures and ratios to the non-GAAP financial measures and ratios, or a reconciliation of the non-GAAP calculation of the financial measure for the periods indicated. Peer group data consists of median of publicly traded banks with total assets from $2-$9 billion with commercial loans greater than 20% and consumer loans less than 10%. 33

Reconciliation of Non-GAAP Financial Measures For the Quarter ended For the Year ended Dec 31, Sep 30, Jun 30, Mar 31, Dec 31, Dec 31, Dec 31, ($ in thousands, except per share data) 2018 2018 2018 2018 2017 2018 2017 CORE PERFORMANCE MEASURES Net interest income $ 50,593 $ 48,093 $ 47,048 $ 46,171 $ 47,404 $ 191,905 $ 177,304 Less: Incremental accretion income 2,109 535 291 766 2,503 3,701 7,718 Core net interest income 48,484 47,558 46,757 45,405 44,901 188,204 169,586 Total noninterest income 10,702 8,410 9,693 9,542 11,112 38,347 34,394 Less: Other income from non-core acquired assets 10 7 18 1,013 (6) 1,048 (6) Less: Gain on sale of investment securities — — — 9 — 9 22 Less: Other non-core income 26 — 649 — — 675 — Core noninterest income 10,666 8,403 9,026 8,520 11,118 36,615 34,378 Total core revenue 59,150 55,961 55,783 53,925 56,019 224,819 203,964 Total noninterest expense 30,747 29,922 29,219 29,143 28,260 119,031 115,051 Less: Other expenses related to non-core acquired loans 40 12 (229) 14 114 (163) 240 Less: Facilities disposal — — 239 — — 239 389 Less: Merger related expenses 1,271 — — — — 1,271 6,462 Less: Non-recurring excise tax1 — 682 — — — 682 — Core noninterest expense 29,436 29,228 29,209 29,129 28,146 117,002 107,960 Core efficiency ratio 49.77% 52.23% 52.36% 54.02% 50.24% 52.04% 52.93% NET INTEREST MARGIN TO CORE NET INTEREST MARGIN (FULLY TAX EQUIVALENT) Net interest income $ 50,786 $ 48,299 $ 47,254 $ 46,386 $ 47,824 $ 192,725 $ 179,114 Less: Incremental accretion income 2,109 535 291 766 2,503 3,701 7,718 Core net interest income $ 48,677 $ 47,764 $ 46,963 $ 45,620 $ 45,321 $ 189,024 $ 171,396 Average earning assets $5,118,319 $5,072,573 $5,023,607 $4,948,875 $4,826,271 $5,041,395 $4,611,671 Reported net interest margin 3.94% 3.78% 3.77% 3.80% 3.93% 3.82% 3.88% Core net interest margin 3.77% 3.74% 3.75% 3.74% 3.73% 3.75% 3.72% 1 Income tax for the quarter ended September 30, 2018, includes a $2.7 million income tax planning benefit, associated with the excise tax expense, recognized upon finalization of the Company's 2017 tax returns. 34

Reconciliation of Non-GAAP Financial Measures For the Year ended December 31, December 31, December 31, December 31, ($ in thousands, except per share data) 2018 2017 2016 2015 CORE PERFORMANCE MEASURES Net interest income $ 191,905 $ 177,304 $ 135,495 $ 120,410 Less: Incremental accretion income 3,701 7,718 11,980 12,792 Core net interest income 188,204 169,586 123,515 107,618 Total noninterest income 38,347 34,394 29,059 20,675 Less: Gain on sale of other real estate from non-core acquired loans 1,048 (6) 1,565 107 Less: Other income from non-core acquired assets — — 621 — Less: Gain on sale of investment securities 9 22 86 23 Less: Change in FDIC loss share receivable — — — (5,030) Less: Other non-core income 675 — — — Core noninterest income 36,615 34,378 26,787 25,575 Total core revenue 224,819 203,964 150,302 133,193 Total noninterest expense 119,031 115,051 86,110 82,226 Less: Merger related expenses 1,271 6,462 1,386 — Less: Other expenses related to non-core acquired loans (163) 240 1,094 1,558 Less: Facilities disposal charge 239 389 1,040 — Less: Executive severance — — 332 — Less: FDIC loss share termination — — — 2,436 Less: FDIC clawback — — — 760 Less: Non-recurring excise tax 682 — — — Less: Other non-core expenses — — 41 — Core noninterest expense 117,002 107,960 82,217 77,472 Core efficiency ratio 52.04% 52.93% 54.7% 58.17% NET INTEREST MARGIN TO CORE NET INTEREST MARGIN (FULLY TAX EQUIVALENT) Net interest income $ 192,725 $ 179,114 $ 137,261 $ 122,141 Less: Incremental accretion income 3,701 7,718 11,980 12,792 Core net interest income $ 189,024 $ 171,396 $ 125,281 $ 109,349 Average earning assets $ 5,041,395 $ 4,611,671 $ 3,570,186 $ 3,163,339 Reported net interest margin 3.82% 3.88% 3.84% 3.86% Core net interest margin 3.75% 3.72% 3.51% 3.46% 35

4th Quarter 2018 EFSC Investor Presentation Q&A