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Form 8-K

sec.gov

8-K — ENTERPRISE FINANCIAL SERVICES CORP

Accession: 0001025835-26-000185

Filed: 2026-10-21

Period: 2026-10-21

CIK: 0001025835

SIC: 6022 (STATE COMMERCIAL BANKS)

Item: Results of Operations and Financial Condition

Item: Financial Statements and Exhibits

Documents

8-K — efsc-20261021.htm (Primary)

EX-99.1 — EARNINGS RELEASE (ex991financialstatementsan.htm)

EX-99.2 — WEBCAST SLIDES (q32026efscearningsreleas.htm)

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XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K

8-K (Primary)

Filename: efsc-20261021.htm · Sequence: 1

efsc-20261021

0001025835FALSE150 N. Meramec AvenueSt. LouisMissouri6310500010258352026-10-212026-10-210001025835us-gaap:CommonStockMember2026-10-212026-10-210001025835efsc:DepositarySharesMember2026-10-212026-10-21

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)

October 21, 2026

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 Avenue, 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:

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

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

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

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

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, par value $0.01 per share EFSC Nasdaq Global Select Market

Depositary Shares, Each Representing a 1/40th Interest in a Share of 5.00% Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series A EFSCP Nasdaq Global Select Market

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 2.02 Results of Operations and Financial Condition.

On October 21, 2026, Enterprise Financial Services Corp (the "Company" or "EFSC") issued a press release announcing financial information for the quarter ended September 30, 2026. A copy of the press release is furnished as Exhibit 99.1 and is incorporated herein by reference.

On October 22, 2026, at 10:00 a.m. Central time, the Company intends to hold a webcast to present information on its results of operations for the quarter ended September 30, 2026. The slide presentation which will accompany the webcast is furnished as Exhibit 99.2 and is incorporated herein by reference.

The press release, slide presentation and information contained therein and in this Item 2.02 shall not be deemed “filed” with the Securities and Exchange Commission.

Item 9.01 Financial Statements and Exhibits.

(d)     Exhibits.

Exhibit Number Description

99.1

Press Release dated October 21, 2026.

99.2

Presentation to be conducted October 22, 2026.

104 The cover page of this Current Report on Form 8-K, formatted in Inline XBRL.

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: October 21, 2026 By: /s/ Troy R. Dumlao

Troy R. Dumlao

Executive Vice President and Chief Accounting Officer

EX-99.1 — EARNINGS RELEASE

EX-99.1

Filename: ex991financialstatementsan.htm · Sequence: 2

Document

EXHIBIT 99.1

ENTERPRISE FINANCIAL SERVICES CORP REPORTS THIRD QUARTER 2026 RESULTS

Third Quarter Results

•Net income of $42.4 million, or $1.14 per diluted common share, compared to $1.09 for the linked quarter and $1.19 for the prior year quarter

•Net interest margin (“NIM”) of 4.30%, stable with the linked quarter

•Net interest income of $174.6 million, quarterly increase of $5.9 million

•Total loans of $12.3 billion, quarterly increase of $452.3 million

•Total deposits of $15.1 billion, quarterly increase of $624.4 million

•Return on average assets (“ROAA”) of 0.95% for the current and linked quarters, compared to 1.11% for the prior year quarter

•Return on average tangible common equity (“ROATCE”)1 of 10.74%, compared to 10.39% for the linked quarter and 11.56% for the prior year quarter

•Tangible common equity to tangible assets1 of 8.13%, compared to 9.04% in the linked quarter and 9.60% in the prior year quarter

•Tangible book value per common share1 of $39.45, compared to $42.30 for the linked quarter and $41.58 for the prior year quarter

•Returned $46.5 million to stockholders through the repurchase of 525,767 shares for $34.0 million and $12.5 million through common stock dividends

•Increased quarterly dividend $0.01 to $0.36 per common share for the fourth quarter 2026

St. Louis, MO. October 21, 2026 – Enterprise Financial Services Corp (Nasdaq: EFSC) (the “Company” or “EFSC”) today announced financial results for the third quarter of 2026. “The strong loan and deposit growth that our team delivered this quarter reflects our associates’ continued commitment to our clients and the strength of our diversified business platform,” said Jim Lally, President and Chief Executive Officer. “We have continued to grow net interest income which helped offset a higher provision for credit losses for the quarter. The strength of our balance sheet and solid return profile provides the foundation to support our growth while continuing to return capital to stockholders.”

Comparisons to the prior year quarter are affected by the acquisition of 12 branches in Arizona and Kansas in the fourth quarter 2025 (the “Branch Acquisition”). Noninterest income for the prior year quarter also included $32.1 million of anticipated insurance proceeds from a pending claim related to a recapture event with respect to a $24.1 million solar tax credit that the Company purchased and applied to prior taxable periods. The anticipated proceeds from the insurance policy and tax liability resulting from the recapture event, both totaling $32.1 million, are included in “Noninterest Income” and “Income Tax Expense”, respectively, in the Condensed Consolidated Statements of Income for the three and nine months ended September 30, 2025.

1 ROATCE, tangible common equity to tangible assets, and tangible book value per common share are non-GAAP measures. Please refer to discussion and reconciliation of these measures in the accompanying financial tables.

Highlights

•Earnings - Net income in the third quarter 2026 was $42.4 million, an increase of $1.5 million and a decrease of $2.8 million compared to the linked and prior year quarters, respectively. Earnings per diluted common share for the third quarter 2026 was $1.14, compared to $1.09 and $1.19 for the linked and prior year quarters, respectively. Adjusted diluted earnings per share2 was $1.17 in the third quarter 2026, compared to $1.13 and $1.20 in the linked and prior year quarters, respectively.

•Pre-provision net revenue (“PPNR”)2 - PPNR of $74.6 million in the third quarter 2026 increased $6.4 million and $9.0 million from the linked and prior year quarter, respectively. The increase from the linked and prior year quarters was primarily due to an increase in net interest income. Compared to the prior year quarter, the increase was partially offset by an increase in noninterest expense.

•Net interest income and NIM - Net interest income of $174.6 million for the third quarter 2026 increased $5.9 million and $16.3 million from the linked and prior year quarters, respectively. Compared to the linked quarter, net interest income benefitted from organic loan growth, as well as an additional day during the period. Compared to the prior year quarter, net interest income increased primarily due to higher average loan and investment balances and a decrease on rates paid on interest-bearing liabilities. NIM was 4.30% for the current and linked quarters, respectively, and 4.23% for the prior year quarter. The total cost of deposits of 1.54% for the third quarter 2026 increased one basis point and decreased 26 basis points from the linked and prior year quarters, respectively.

•Noninterest income - Noninterest income of $13.2 million for the third quarter 2026 decreased $0.3 million and $35.4 million from the linked and prior year quarters, respectively. Excluding the anticipated insurance proceeds from the pending claim related to the tax credit recapture event included in the prior year quarter, noninterest income decreased $3.3 million from the prior year quarter. The decrease in noninterest income from the linked and prior year quarters was primarily due to a decrease in tax credit income and a net loss on other real estate owned (“OREO”), partially offset by higher rental income included in other income.

•Noninterest expense - Noninterest expense of $114.7 million for the third quarter 2026 decreased $1.1 million from the linked quarter and increased $4.9 million from the prior year quarter. The decrease from the linked quarter was primarily driven by lower employee compensation, partially offset by an increase in loan and legal expenses related to OREO and loan workouts. Compared to the prior year quarter, the increase was primarily due to an increase in loan and legal expenses related to OREO and loan workouts, and higher employee compensation as a result of an increase in the associate base and merit increases.

•Loans - Loans totaled $12.3 billion at September 30, 2026, an increase of $452.3 million and $761.6 million from the linked and prior year quarters, respectively. Average loans totaled $12.1 billion for the current quarter, compared to $11.8 billion and $11.5 billion for the linked and prior year quarters, respectively.

•Asset quality - The allowance for credit losses to total loans was 1.17% at September 30, 2026 and June 30, 2026, respectively, and 1.29% at September 30, 2025. The provision for credit losses in the third quarter 2026 was $18.1 million, compared to $14.2 million and $8.4 million for the linked and prior year quarters, respectively. The ratio of nonperforming assets to total assets was 1.03% at September 30, 2026, compared to 0.92% and 0.83% at June 30, 2026 and September 30, 2025, respectively.

2 Adjusted diluted earnings per share and PPNR are non-GAAP measures. Please refer to discussion and reconciliation of these measures in the accompanying financial tables.

2

•Deposits - Deposits totaled $15.1 billion at September 30, 2026, an increase of $624.4 million and $1.6 billion from the linked and prior year quarters, respectively. Average deposits were $15.0 billion for the current quarter, compared to $14.6 billion and $13.6 billion for the linked and prior year quarter, respectively. At September 30, 2026, noninterest-bearing deposit accounts totaled $5.0 billion, or 33% of total deposits, and the loan to deposit ratio was 82%.

•Capital - Total stockholders’ equity was $1.9 billion and the tangible common equity to tangible assets ratio3 was 8.13% at September 30, 2026, compared to $2.0 billion and 9.04%, respectively, at June 30, 2026. Enterprise Bank & Trust remains “well-capitalized,” with a common equity tier 1 ratio of 11.8% and a total risk-based capital ratio of 12.8% at September 30, 2026. The Company’s common equity tier 1 ratio and total risk-based capital ratio were 11.1% and 14.4%, respectively, at September 30, 2026.

The Company’s Board of Directors (the “Board”) approved a quarterly dividend of $0.36 per common share, payable on December 31, 2026 to stockholders of record as of December 15, 2026. The Board also declared a cash dividend of $12.50 per share of Series A Preferred Stock (or $0.3125 per depositary share) representing a 5% per annum rate for the period commencing (and including) September 15, 2026 to (but excluding) December 15, 2026. The dividend will be payable on December 15, 2026 to stockholders of record of Series A Preferred Stock as of November 30, 2026.

3 Tangible common equity to tangible assets ratio is a non-GAAP measure. Please refer to discussion and reconciliation of this measure in the accompanying financial tables.

3

Net Interest Income and NIM

Average Balance Sheets

The following table presents, for the periods indicated, certain information related to the average interest-earning assets and interest-bearing liabilities, as well as the corresponding average interest rates earned and paid, all on a tax-equivalent basis.

Quarter ended

September 30, 2026 June 30, 2026 September 30, 2025

($ in thousands) Average

Balance Interest

Income/

Expense Average Yield/ Rate Average

Balance Interest

Income/

Expense Average Yield/ Rate Average

Balance Interest

Income/

Expense Average Yield/ Rate

Assets

Interest-earning assets:

Loans1, 2

$ 12,067,288  $ 195,309  6.42  % $ 11,775,879  $ 188,819  6.43  % $ 11,454,183  $ 191,589  6.64  %

Taxable securities 2,589,972  29,378  4.50  2,539,301  27,898  4.41  2,100,748  21,705  4.10

Non-taxable securities2

1,294,511  12,510  3.83  1,294,693  12,317  3.82  1,252,557  11,503  3.64

Total securities 3,884,483  41,888  4.28  3,833,994  40,215  4.21  3,353,305  33,208  3.93

Interest-earning deposits 465,119  4,343  3.70  431,044  3,697  3.44  328,392  3,638  4.40

Total interest-earning assets 16,416,890  241,540  5.84  16,040,917  232,731  5.82  15,135,880  228,435  5.99

Noninterest-earning assets 1,279,189  1,266,799  1,042,208

Total assets $ 17,696,079  $ 17,307,716  $ 16,178,088

Liabilities and Stockholders’ Equity

Interest-bearing liabilities:

Interest-bearing demand accounts $ 3,641,074  $ 16,877  1.84  % $ 3,438,895  $ 15,149  1.77  % $ 3,298,022  $ 17,488  2.10  %

Money market accounts 4,047,970  26,316  2.58  4,009,504  25,788  2.58  3,706,891  28,734  3.08

Savings accounts 536,184  170  0.13  546,880  164  0.12  532,015  183  0.14

Certificates of deposit 1,697,479  14,648  3.42  1,698,565  14,569  3.44  1,609,346  15,210  3.75

Total interest-bearing deposits 9,922,707  58,011  2.32  9,693,844  55,670  2.30  9,146,274  61,615  2.67

Subordinated debentures and notes 262,795  4,408  6.65  120,277  2,061  6.87  136,895  2,683  7.78

FHLB advances 19,511  200  4.07  88,011  861  3.92  106,130  1,207  4.51

Securities sold under agreements to repurchase 169,322  914  2.14  200,060  1,162  2.33  159,039  1,155  2.88

Other borrowings 36,262  95  1.04  84,609  843  4.00  56,164  444  3.14

Total interest-bearing liabilities 10,410,597  63,628  2.42  10,186,801  60,597  2.39  9,604,502  67,104  2.77

Noninterest-bearing liabilities:

Demand deposits 5,065,373  4,914,670  4,458,028

Other liabilities 179,865  154,012  151,432

Total liabilities 15,655,835  15,255,483  14,213,962

Stockholders' equity 2,040,244  2,052,233  1,964,126

Total liabilities and stockholders' equity $ 17,696,079  $ 17,307,716  $ 16,178,088

Total net interest income $ 177,912  $ 172,134  $ 161,331

Net interest margin 4.30  % 4.30  % 4.23  %

1 Average balances include nonaccrual loans. Interest income includes net loan fees of $2.0 million, $1.5 million, and $1.9 million for each of the three months ended September 30, 2026, June 30, 2026, and September 30, 2025, respectively.

2 Non-taxable income is presented on a fully tax-equivalent basis using a tax rate of approximately 25%. The tax-equivalent adjustments were $3.3 million, $3.4 million, and $3.0 million for each of the three months ended September 30, 2026, June 30, 2026, and September 30, 2025, respectively.

4

Net interest income of $174.6 million for the third quarter 2026 increased $5.9 million and $16.3 million from the linked and prior year quarters, respectively. Net interest income on a tax-equivalent basis was $177.9 million, $172.1 million and $161.3 million for the current, linked and prior year quarters, respectively. The increase from the linked quarter reflects organic loan growth and the benefit of one additional day compared to the linked quarter. These increases were partially offset by an increase in the average balance of interest-bearing liabilities. Compared to the prior year quarter, the increase in net interest income was primarily due to growth in the average balance of interest-earning assets and lower rates paid on interest-bearing liabilities, specifically certificates of deposit and money market accounts.

Interest income for the third quarter 2026 increased $8.9 million and $12.8 million from the linked and prior year quarters, respectively. The increase from the linked quarter was primarily due to a $291.4 million increase in average loans, a $50.5 million increase in average securities balances and one additional day during the period. Compared to the prior year quarter, the increase in interest income was primarily due to an increase of $613.1 million and $531.2 million in average loan and investment securities balances, respectively, partially offset by a 15 basis point decrease in the yield on interest-earning assets. The average interest rate of new loan originations in the third quarter 2026 was 6.61%, and investment purchases in the third quarter 2026 had a weighted average, tax-equivalent yield of 4.74%.

Interest expense in the third quarter 2026 increased $3.0 million and decreased $3.5 million from the linked and prior year quarters, respectively. Compared to the linked quarter, the increase in interest expense was primarily due to the first full quarter of $175 million of subordinated debt issued in the linked quarter and higher interest-bearing demand account balances, partially offset by the redemption of $7.7 million of 10.2% fixed rate trust preferred securities in the current quarter. Compared to the prior year quarter, the decrease was primarily due to decreased interest paid on interest-bearing liabilities, partially offset by a $806.1 million increase in the average balance of interest-bearing liabilities. The rate paid on interest-bearing liabilities was 2.42% during the third quarter 2026, compared to 2.39% and 2.77% in the linked and prior year quarters, respectively.

NIM, on a tax-equivalent basis, was 4.30% in the third quarter 2026, stable with the linked quarter and an increase of seven basis points from the prior year quarter. For the month of September 2026, the loan portfolio yield was 6.47% and the cost of total deposits was 1.57%.

Investments

At

September 30, 2026 June 30, 2026 September 30, 2025

($ in thousands) Carrying Value Net Unrealized Loss Carrying Value Net Unrealized Loss Carrying Value Net Unrealized Loss

Available-for-sale (AFS) $ 2,730,596  $ (251,071) $ 2,795,725  $ (101,080) $ 2,351,493  $ (102,269)

Held-to-maturity (HTM) 1,030,084  (116,265) 1,036,477  (38,163) 1,081,847  (49,656)

Total $ 3,760,680  $ (367,336) $ 3,832,202  $ (139,243) $ 3,433,340  $ (151,925)

Investment securities totaled $3.8 billion at September 30, 2026, a decrease of $71.5 million from the linked quarter. The tangible common equity to tangible assets ratio adjusted for unrealized losses on HTM securities4 was 7.63% at September 30, 2026, compared to 8.87% at June 30, 2026.

4 The tangible common equity to tangible assets ratio adjusted for unrealized losses on held-to-maturity securities is a non-GAAP measure. Refer to discussion and reconciliation of this measure in the accompanying financial tables.

5

Loans

The following table presents total loans for the most recent five quarters:

At

($ in thousands) September 30,

2026 June 30,

2026 March 31,

2026 December 31,

2025 September 30,

2025

C&I $ 2,707,185  $ 2,628,065  $ 2,655,273  $ 2,606,472  $ 2,320,868

CRE investor owned 3,040,845  2,902,890  2,763,227  2,786,139  2,626,657

CRE owner occupied 1,454,715  1,421,859  1,452,350  1,404,704  1,296,902

SBA loans* 1,245,288  1,237,294  1,230,455  1,262,456  1,257,817

Sponsor finance* 713,614  708,449  661,946  694,905  774,142

Life insurance premium financing* 1,349,925  1,250,250  1,208,098  1,187,128  1,151,700

Tax credits* 749,810  725,452  702,080  802,818  780,767

Residential real estate 352,075  356,342  340,966  362,278  359,315

Construction and land development 681,068  608,923  621,988  633,803  784,218

Consumer** 50,180  52,875  56,397  59,635  230,723

Total loans $ 12,344,705  $ 11,892,399  $ 11,692,780  $ 11,800,338  $ 11,583,109

Quarterly loan yield 6.42  % 6.43  % 6.38  % 6.51  % 6.64  %

Loans by rate type (to total loans):

Fixed 37  % 37  % 37  % 40  % 41  %

Variable: 63  % 63  % 63  % 60  % 59  %

SOFR 33  % 32  % 32  % 30  % 29  %

Prime 23  % 24  % 24  % 23  % 23  %

Other 7  % 7  % 7  % 7  % 7  %

Variable rate loans to total loans, adjusted for interest rate hedges 57  % 58  % 59  % 56  % 55  %

*Specialty loan category

**Certain loans were reclassified from Consumer and into other categories in the fourth quarter of 2025. Prior period amounts were not adjusted.

Loans totaled $12.3 billion at September 30, 2026, an increase of $452.3 million compared to the linked quarter. The increase from the linked quarter was primarily driven by a 12% increase in the construction and land development portfolio, an 8% increase in the life insurance premium financing portfolio and a 5% increase in the CRE investor owned portfolio. Combined, these three categories accounted for $310 million in net loan growth during the current quarter. Loan production outpaced repayment activity in the quarter with loan volume of $1.3 billion compared to repayment activity of $800.7 million. Average line utilization was approximately 47% for the current and linked quarters, respectively, compared to 45% for the prior year quarter.

6

Asset Quality

The following table presents the categories of nonperforming assets and related ratios for the most recent five quarters:

At

($ in thousands) September 30,

2026 June 30,

2026 March 31,

2026 December 31,

2025 September 30,

2025

Nonperforming loans* $ 87,270  $ 76,144  $ 64,941  $ 82,809  $ 127,878

Other1

95,582  84,259  84,482  81,544  7,821

Nonperforming assets* $ 182,852  $ 160,403  $ 149,423  $ 164,353  $ 135,699

Nonperforming loans to total loans 0.71  % 0.64  % 0.56  % 0.70  % 1.10  %

Nonperforming assets to total assets 1.03  % 0.92  % 0.87  % 0.95  % 0.83  %

Allowance for credit losses $ 144,519  $ 139,238  $ 142,064  $ 140,022  $ 148,854

Allowance for credit losses to total loans 1.17  % 1.17  % 1.21  % 1.19  % 1.29  %

Allowance for credit losses to nonperforming loans* 165.6  % 182.9  % 218.8  % 169.1  % 116.4  %

Quarterly net charge-offs

$ 11,036  $ 13,555  $ 4,407  $ 20,674  $ 4,057

*Guaranteed balances excluded $ 53,650  $ 40,698  $ 28,243  $ 28,903  $ 33,475

1OREO and repossessed assets transferred at fair value, and carried at the lesser of cost or market value.

The following table presents a summary of nonperforming assets by loan category as of September 30, 2026:

($ in thousands) Nonperforming Loans Government Guaranteed Nonperforming Loans, net ACL Reserve Allocation

C&I $ 34,193  $ (1,155) $ 33,038  $ (14,977)

CRE investor owned 32,762  (7,189) 25,573  (22)

CRE owner occupied 69,004  (43,300) 25,704  (1,482)

SBA (included in CRE owner occupied) 55,318  (43,300) 12,018  (658)

Other 4,961  (2,006) 2,955  (267)

Total $ 140,920  $ (53,650) $ 87,270  $ (16,748)

Other1

95,582

Nonperforming assets $ 182,852

1OREO and repossessed assets transferred at fair value, and carried at the lesser of cost or market value.

Nonperforming assets increased $22.4 million and $47.2 million from the linked and prior year quarters, respectively. In the current quarter, the Company foreclosed on a CRE relationship with a book value of $15.5 million that was transferred to OREO at fair market value, less selling costs, resulting in a partial charge-off of $2.6 million. The increase in nonperforming assets compared to the linked quarter is primarily due to $18.0 million in agricultural-related loans, a $7.5 million CRE relationship and a $4.1 million C&I relationship that went on nonaccrual.

The provision for credit losses totaled $18.1 million in the third quarter 2026, compared to $14.2 million and $8.4 million in the linked and prior year quarters, respectively. The third quarter 2026 provision for credit losses was driven mainly by $11.0 million in net charge-offs, the increase in nonperforming loans and organic loan growth. Charge-offs during the period primarily consisted of a $7.0 million C&I relationship in Missouri and the $2.6 million charge-off noted above. Annualized net charge-offs totaled 36 basis points of average loans in the current quarter, compared to 46 basis points in the linked quarter and 14 basis points of average loans in the prior year quarter.

7

Deposits

The following table presents deposits broken out by type for the most recent five quarters:

At

($ in thousands) September 30,

2026 June 30,

2026 March 31,

2026 December 31,

2025 September 30,

2025

Noninterest-bearing demand accounts $ 5,043,875  $ 4,910,235  $ 4,828,375  $ 4,874,115  $ 4,386,513

Interest-bearing demand accounts 3,723,393  3,406,505  3,395,680  3,537,334  3,301,621

Money market and savings accounts 4,664,512  4,482,011  4,610,662  4,528,510  4,228,605

Brokered certificates of deposit 735,993  736,377  724,788  721,977  762,499

Other certificates of deposit 959,191  967,423  964,892  947,406  888,674

Total deposit portfolio $ 15,126,964  $ 14,502,551  $ 14,524,397  $ 14,609,342  $ 13,567,912

Noninterest-bearing deposits to total deposits 33.3  % 33.9  % 33.2  % 33.4  % 32.3  %

Quarterly cost of deposits 1.54  % 1.53  % 1.52  % 1.64  % 1.80  %

Total deposits at September 30, 2026 were $15.1 billion, an increase of $624.4 million and $1.6 billion from the linked and prior year quarters, respectively. Average deposits for the three months ended September 30, 2026 were $15.0 billion, compared to $14.6 billion and $13.6 billion for the three months ended June 30, 2026 and September 30, 2025, respectively. Reciprocal deposits, which are placed through third party programs to provide FDIC insurance on larger deposit relationships, totaled $1.3 billion and $1.2 billion at September 30, 2026 and June 30, 2026, respectively.

Noninterest Income

The following table presents a comparative summary of the major components of noninterest income for the periods indicated:

Linked quarter comparison Prior year comparison

Quarter ended Quarter ended

($ in thousands) September 30,

2026 June 30,

2026 Increase

(decrease) September 30,

2025 Increase

(decrease)

Deposit service charges $ 5,407  $ 5,477  $ (70) (1) % $ 4,935  $ 472  10  %

Wealth management revenue 2,864  2,804  60  2  % 2,571  293  11  %

Card services revenue 2,621  2,545  76  3  % 2,535  86  3  %

Tax credit loss

(5,030) (1,733) (3,297) (190) % (300) (4,730) (1,577) %

Other income 7,352  4,385  2,967  68  % 38,883  (31,531) (81) %

Total noninterest income $ 13,214  $ 13,478  $ (264) (2) % $ 48,624  $ (35,410) (73) %

Total noninterest income was $13.2 million for the third quarter 2026, a decrease of $0.3 million and $35.4 million from the linked and prior year quarters, respectively. The decrease from the linked quarter was primarily due to lower tax credit income, partially offset by an increase in other income, which is discussed further below. Compared to the prior year quarter, the decrease was primarily due to a decrease in other income, consisting primarily of the anticipated insurance proceeds from the tax credit recapture, and lower tax credit income. Tax credit income is typically highest in the fourth quarter of each year and will vary in other periods based on transaction volumes and fair value changes. Changes in the interest rate environment had a negative impact on tax credit projects carried at fair value.

8

The following table presents a comparative summary of the major components of other income for the periods indicated:

Linked quarter comparison Prior year comparison

Quarter ended Quarter ended

($ in thousands) September 30,

2026 June 30,

2026 Increase (decrease) September 30,

2025 Increase

(decrease)

BOLI $ 1,803  $ 2,427  $ (624) (26) % $ 2,062  $ (259) (13) %

Community development investments 495  404  91  23  % 309  186  60  %

Gain on SBA loan sales —  —  —  —  % 1,140  (1,140) (100) %

Gain on sales of fixed assets —  687  (687) (100) % —  —  —  %

Net gain (loss) on OREO

(1,402) (302) (1,100) 364  % 7  (1,409) (20,129) %

Net loss on sales of investment securities —  (2,146) 2,146  (100) % —  —  —  %

Private equity fund distributions 149  283  (134) (47) % 626  (477) (76) %

Servicing fees 679  540  139  26  % 587  92  16  %

Swap fees 9  131  (122) (93) % 341  (332) (97) %

Anticipated insurance recoveries —  —  —  —  % 32,112  (32,112) (100) %

Miscellaneous income 5,619  2,361  3,258  138  % 1,699  3,920  231  %

Total other income $ 7,352  $ 4,385  $ 2,967  68  % $ 38,883  $ (31,531) (81) %

Other income in the third quarter 2026 increased $3.0 million and decreased $31.5 million compared to the linked and prior year quarters, respectively. The increase from the linked quarter was primarily due to a $3.8 million increase in rental income from OREO included in miscellaneous income and a $2.1 million net loss on sales of investment securities in the linked quarter that did not reoccur, partially offset by a $1.4 million net loss on OREO. Compared to the prior year quarter, the decrease was primarily driven by the $32.1 million in accrued insurance proceeds that are anticipated to be received as a result of the recaptured tax credits recognized in the prior year quarter that did not reoccur.

Noninterest Expense

The following table presents a comparative summary of the major components of noninterest expense for the periods indicated:

Linked quarter comparison Prior year comparison

Quarter ended Quarter ended

($ in thousands) September 30,

2026 June 30,

2026 Increase

(decrease) September 30,

2025 Increase

(decrease)

Employee compensation and benefits $ 50,581  $ 53,114  $ (2,533) (5) % $ 49,640  $ 941  2  %

Deposit costs 27,482  27,832  (350) (1) % 27,172  310  1  %

Occupancy 5,893  5,909  (16) —  % 4,895  998  20  %

Acquisition costs —  —  —  —  % 609  (609) (100) %

Other expense 30,698  28,884  1,814  6  % 27,474  3,224  12  %

Total noninterest expense $ 114,654  $ 115,739  $ (1,085) (1) % $ 109,790  $ 4,864  4  %

Noninterest expense decreased $1.1 million from the linked quarter and increased $4.9 million from the prior year quarter. The decrease from the linked quarter was primarily due to a $2.5 million decrease in employee compensation and benefits from a lower associate base and a reduction in variable compensation accruals, partially offset by an increase in loan, legal, foreclosure and property maintenance expenses related to OREO and loan workouts.

9

The increase in noninterest expense from the prior year quarter was primarily due to an increase of $2.5 million in loan, legal, foreclosure and property maintenance expenses related to OREO and loan workouts, and an increase in the associate base as a result of the Branch Acquisition and merit increases throughout 2025 and 2026. For the third quarter 2026, the core efficiency ratio5 was 58.9%, compared to 61.1% for the linked quarter and 61.0% for the prior year quarter.

Income Taxes

The effective tax rate for the current quarter was 22.9%, compared to 21.7% and 49.0% in the linked and prior year quarters, respectively. Included in tax expense during the prior year quarter is $24.1 million in transferrable tax credits that were recaptured as discussed above and approximately $8.0 million of incremental tax liability attributable to the anticipated insurance proceeds from the insured recaptured credits. Excluding these items, the adjusted effective tax rate5 for the third quarter 2025 was 20.0%. The increase in the effective tax rate from the linked and prior year quarters was due to an increase in state taxes.

Capital

The following table presents total equity and various capital ratios for the most recent five quarters:

At

($ in thousands) September 30, 2026* June 30,

2026 March 31, 2026 December 31

2025 September 30,

2025

Stockholders’ equity $ 1,917,326  $ 2,040,846  $ 2,022,204  $ 2,039,386  $ 1,982,332

Total risk-based capital to risk-weighted assets 14.4  % 15.0  % 13.9  % 13.9  % 14.4  %

Tier 1 capital to risk weighted assets 12.2  % 12.7  % 12.9  % 12.8  % 13.3  %

Common equity tier 1 capital to risk-weighted assets 11.1  % 11.5  % 11.7  % 11.6  % 12.0  %

Leverage ratio 10.2  % 10.4  % 10.4  % 10.5  % 11.1  %

Tangible common equity to tangible assets5

8.13  % 9.04  % 9.01  % 9.07  % 9.60  %

*Capital ratios for the current quarter are preliminary and subject to, among other things, completion and filing of the Company’s regulatory reports and ongoing regulatory review.

Total equity was $1.9 billion at September 30, 2026, a decrease of $123.5 million and $65.0 million from the linked and prior year quarters, respectively. The decrease in total equity was primarily due to higher unrealized losses on the AFS investment securities portfolio due to an increase in interest rates. Tangible book value per common share5 was $39.45 at September 30, 2026, compared to $42.30 and $41.58 at June 30, 2026 and September 30, 2025, respectively. The Company repurchased 525,767 shares at an average price of $64.74 in the third quarter 2026.

The Company’s regulatory capital ratios continue to exceed the “well-capitalized” regulatory benchmark. Capital ratios for the current quarter are subject to, among other things, completion and filing of the Company’s regulatory reports and ongoing regulatory review.

5 Core efficiency ratio, adjusted effective tax rate, tangible common equity to tangible assets, and tangible book value per common share are non-GAAP measures. Refer to discussion and reconciliation of these measures in the accompanying financial tables.

10

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 tangible common equity, PPNR, ROATCE, adjusted ROATCE, core efficiency ratio, adjusted effective tax rate, tangible common equity to tangible assets ratio, tangible common equity to tangible assets ratio adjusted for unrealized losses on held-to-maturity securities, tangible book value per common share, return on average common equity, adjusted return on average common equity, allowance for credit losses to total loans excluding guaranteed loans, adjusted ROAA, and adjusted diluted earnings per share, in this release 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.

The Company considers its tangible common equity, PPNR, ROATCE, adjusted ROATCE, core efficiency ratio, adjusted effective tax rate, tangible common equity to tangible assets ratio, tangible common equity to tangible assets ratio adjusted for unrealized losses on held-to-maturity securities, tangible book value per common share, return on average common equity, adjusted return on average common equity, allowance for credit losses to total loans excluding guaranteed loans, adjusted ROAA and adjusted diluted earnings per share, collectively “core performance measures,” presented in this earnings release and the included tables 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 certain non-comparable items, and the Company’s operating performance on an ongoing basis. Core performance measures exclude certain other income and expense items, such as the FDIC special assessment, acquisition costs, accrued insurance proceeds anticipated to be received as a result of recaptured tax credits, the net gain or loss on sales of fixed assets, the net gain or loss on OREO and the net gain or loss on sales of investment securities, that 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 to tangible assets 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 attached tables, 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 measures for the periods indicated.

Conference Call and Webcast Information

The Company will host a conference call and webcast at 10:00 a.m. Central Time on Thursday, October 22, 2026. During the call, management will review the third quarter 2026 results and related matters. This press release as well as a related slide presentation will be accessible via the “Investor Relations” page of the Company’s website, https://investor.enterprisebank.com/events-and-presentations, prior to the scheduled broadcast of the conference call. The call can be accessed via this same website page, or via telephone at 1-833-461-5787. After connecting, you may say the name of the conference or enter the Conference ID 416436528. We encourage participants to pre-register for the conference call using the following link: https://bit.ly/EFSC3Q2026EarningsCallRegistration. Callers who pre-register will be given a conference passcode and unique PIN to gain immediate access to the call and bypass the live operator. Participants may pre-register at any time, including up to and after the call start time. A recorded replay of the conference call will be available on the website after the call’s completion. The replay will be available for at least two weeks following the conference call.

11

About Enterprise Financial Services Corp

Enterprise Financial Services Corp (Nasdaq: EFSC), with approximately $17.8 billion in assets, is a financial holding company headquartered in Clayton, Missouri. Enterprise Bank & Trust, a Missouri state-chartered trust company with banking powers and a wholly-owned subsidiary of EFSC, operates branch offices in Arizona, California, Kansas, Missouri, Nevada, and New Mexico, and SBA loan and deposit production offices throughout the country. Enterprise Bank & Trust offers a range of business and personal banking services and wealth management services. Enterprise Trust, a division of Enterprise Bank & Trust, provides financial planning, estate planning, investment management and trust services to businesses, individuals, institutions, retirement plans and non-profit organizations. Additional information is available at www.enterprisebank.com.

Enterprise Financial Services Corp’s common stock is traded on the Nasdaq Global Select Market under the symbol “EFSC.” Please visit our website at www.enterprisebank.com to see our regularly posted material information.

Forward-looking Statements

Readers should note that, in addition to the historical information contained herein, this press release 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. Such forward-looking statements are based on management’s current expectations and beliefs concerning future developments and their potential effects on the Company including, without limitation, plans, strategies and goals, and statements about the Company’s expectations regarding revenue and asset growth, financial performance and profitability, loan and deposit growth, liquidity, yields and returns, loan diversification and credit management, stockholder value creation and the impact of acquisitions.

Forward-looking statements are typically identified by words such as “believe,” “expect,” “anticipate,” “intend,” “outlook,” “estimate,” “forecast,” “project,” “pro forma”, “pipeline” and other similar words and expressions. Forward-looking statements are subject to numerous assumptions, risks and uncertainties, which change over time. Forward-looking statements speak only as of the date they are made. Because forward-looking statements are subject to assumptions and uncertainties, actual results or future events could differ, possibly materially, from those anticipated in the forward-looking statements and future results could differ materially from historical performance. They are neither statements of historical fact nor guarantees or assurances of future performance. While there is no assurance that any list of risks and uncertainties or risk factors is complete, important factors that could cause actual results to differ materially from those in the forward-looking statements include the following, without limitation: the Company’s ability to efficiently integrate acquisitions into its operations, retain the customers of these businesses and grow the acquired operations, the Company’s ability to collect insurance proceeds from claims made related to tax recapture events, 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 and market conditions, high unemployment rates, higher inflation and its impacts (including U.S. federal government measures to address higher inflation), impacts of trade and tariff policies, U.S. fiscal debt, budget, debt ceiling and tax matters , and any slowdown in global economic growth, risks associated with rapid increases or decreases in prevailing interest rates, our ability to attract and retain deposits and access to other sources of liquidity, changes in business prospects that could impact goodwill estimates and assumptions, 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 legislative or regulatory requirements, as well as current, pending or future legislation or regulation that could have a negative effect on our revenue and businesses, including rules and regulations relating to bank products and financial services, changes in accounting policies and practices or accounting standards, natural disasters (including wildfires and earthquakes), terrorist activities, war and geopolitical instability (including in Israel, Iran and Ukraine and the imposition of additional sanctions and export controls in connection therewith), or pandemics, or other health emergencies and their effects on economic and business environments in which we operate, including the related disruption to the financial market and other economic activity, cybersecurity threats and the cost of defending against them, and those factors and risks referenced from time to time in the Company’s filings with the Securities and Exchange Commission (the “SEC”), including in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025,

12

and the Company’s other filings with the SEC. The Company cautions that the preceding list is not exhaustive of all possible risk factors and other factors could also adversely affect the Company’s results.

For any forward-looking statements made in this press release or in any documents, EFSC claims the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995.

Readers are cautioned not to place undue reliance on any forward-looking statements. Except to the extent required by applicable law or regulation, EFSC disclaims any obligation to revise or publicly release any revision or update to any of the forward-looking statements included herein to reflect events or circumstances that occur after the date on which such statements were made.

For more information contact:

Investor Relations

Keene Turner, Senior Executive Vice President, CFO and COO (314) 512-7233

Dakota Danescu, Senior Investor Relations Analyst (314) 810-3623

Media

Steve Richardson, Senior Vice President, Corporate Communications (314) 995-5695

13

ENTERPRISE FINANCIAL SERVICES CORP

CONSOLIDATED FINANCIAL SUMMARY (unaudited)

Quarter ended Nine months ended

(in thousands, except per share data) Sep 30,

2026 Jun 30,

2026 Mar 31,

2026 Dec 31,

2025 Sep 30,

2025 Sep 30,

2026 Sep 30,

2025

EARNINGS SUMMARY

Net interest income $ 174,606  $ 168,716  $ 166,147  $ 168,174  $ 158,286  $ 509,469  $ 458,564

Provision for credit losses 18,107  14,210  7,243  9,236  8,447  39,560  17,101

Noninterest income 13,214  13,478  19,088  25,412  48,624  45,780  87,711

Noninterest expense 114,654  115,739  115,137  114,532  109,790  345,530  315,275

Income before income tax expense 55,059  52,245  62,855  69,818  88,673  170,159  213,899

Income tax expense 12,615  11,318  13,493  15,024  43,438  37,426  67,319

Net income 42,444  40,927  49,362  54,794  45,235  132,733  146,580

Preferred stock dividends 938  937  938  937  938  2,813  2,813

Net income available to common stockholders $ 41,506  $ 39,990  $ 48,424  $ 53,857  $ 44,297  $ 129,920  $ 143,767

Diluted earnings per common share $ 1.14  $ 1.09  $ 1.30  $ 1.45  $ 1.19  $ 3.54  $ 3.86

Adjusted diluted earnings per common share1

1.17  1.13  1.31  1.36  1.20  3.61  3.88

Return on average assets 0.95  % 0.95  % 1.16  % 1.27  % 1.11  % 1.02  % 1.23  %

Adjusted return on average assets1

0.98  % 0.98  % 1.16  % 1.19  % 1.12  % 1.04  % 1.24  %

Return on average common equity1

8.37  % 8.10  % 9.80  % 10.95  % 9.29  % 8.75  % 10.45  %

Adjusted return on average common equity1

8.58  % 8.37  % 9.84  % 10.28  % 9.40  % 8.93  % 10.51  %

ROATCE1

10.74  % 10.39  % 12.53  % 14.02  % 11.56  % 11.22  % 13.10  %

Adjusted ROATCE1

11.01  % 10.73  % 12.59  % 13.15  % 11.70  % 11.44  % 13.18  %

Net interest margin (tax-equivalent) 4.30  % 4.30  % 4.28  % 4.26  % 4.23  % 4.29  % 4.20  %

Efficiency ratio 61.0  % 63.5  % 62.2  % 59.2  % 53.1  % 62.2  % 57.7  %

Core efficiency ratio1

58.9  % 61.1  % 60.2  % 58.3  % 61.0  % 60.1  % 59.7  %

Assets $ 17,792,510  $ 17,399,009  $ 17,227,828  $ 17,300,884  $ 16,402,405

Average assets $ 17,696,079  $ 17,307,716  $ 17,311,103  $ 17,099,429  $ 16,178,088  $ 17,439,709  $ 15,895,563

Period end common shares outstanding 35,775  36,258  36,581  36,965  37,011

Dividends per common share $ 0.35  $ 0.34  $ 0.33  $ 0.32  $ 0.31  $ 1.02  $ 0.90

Tangible book value per common share1

$ 39.45  $ 42.30  $ 41.38  $ 41.37  $ 41.58

Tangible common equity to tangible assets1

8.13  % 9.04  % 9.01  % 9.07  % 9.60  %

Total risk-based capital to risk-weighted assets2

14.4  % 15.0  % 13.9  % 13.9  % 14.4  %

1 Refer to Reconciliations of Non-GAAP Financial Measures tables for a reconciliation of these measures to GAAP.

2 Capital ratios for the current quarter are preliminary and subject to, among other things, completion and filing of the Company’s regulatory reports and ongoing regulatory review.

14

ENTERPRISE FINANCIAL SERVICES CORP

CONSOLIDATED FINANCIAL SUMMARY (unaudited) (continued)

Quarter ended Nine months ended

(in thousands, except per share data) Sep 30,

2026 Jun 30,

2026 Mar 31,

2026 Dec 31,

2025 Sep 30,

2025 Sep 30,

2026 Sep 30,

2025

INCOME STATEMENTS

NET INTEREST INCOME

Interest income $ 238,234  $ 229,313  $ 225,091  $ 232,273  $ 225,390  $ 692,638  $ 656,137

Interest expense 63,628  60,597  58,944  64,099  67,104  183,169  197,573

Net interest income 174,606  168,716  166,147  168,174  158,286  509,469  458,564

Provision for credit losses 18,107  14,210  7,243  9,236  8,447  39,560  17,101

Net interest income after provision for credit losses 156,499  154,506  158,904  158,938  149,839  469,909  441,463

NONINTEREST INCOME

Deposit service charges 5,407  5,477  5,256  5,081  4,935  16,140  14,295

Wealth management revenue 2,864  2,804  2,712  2,642  2,571  8,380  7,814

Card services revenue 2,621  2,545  2,535  2,621  2,535  7,701  7,374

Tax credit income (loss)

(5,030) (1,733) (179) 3,180  (300) (6,942) 4,517

Insurance recoveries1

—  —  —  —  32,112  —  32,112

Other income 7,352  4,385  8,764  11,888  6,771  20,501  21,599

Total noninterest income 13,214  13,478  19,088  25,412  48,624  45,780  87,711

NONINTEREST EXPENSE

Employee compensation and benefits 50,581  53,114  55,759  50,149  49,640  159,454  148,012

Deposit costs 27,482  27,832  25,996  27,471  27,172  81,310  75,760

Occupancy 5,893  5,909  5,902  5,764  4,895  17,704  14,390

FDIC special assessment —  —  —  (652) —  —  —

Acquisition costs —  —  —  2,548  609  —  1,127

Other expense 30,698  28,884  27,480  29,252  27,474  87,062  75,986

Total noninterest expense 114,654  115,739  115,137  114,532  109,790  345,530  315,275

Income before income tax expense 55,059  52,245  62,855  69,818  88,673  170,159  213,899

Income tax expense 12,615  11,318  13,493  15,024  11,326  37,426  35,207

Tax credit recapture and provision for anticipated tax applied to related insurance recoveries2

—  —  —  —  32,112  —  32,112

Total income tax expense 12,615  11,318  13,493  15,024  43,438  37,426  67,319

Net income $ 42,444  $ 40,927  $ 49,362  $ 54,794  $ 45,235  $ 132,733  $ 146,580

Preferred stock dividends 938  937  938  937  938  2,813  2,813

Net income available to common stockholders $ 41,506  $ 39,990  $ 48,424  $ 53,857  $ 44,297  $ 129,920  $ 143,767

Basic earnings per common share $ 1.15  $ 1.10  $ 1.31  $ 1.46  $ 1.20  $ 3.56  $ 3.89

Diluted earnings per common share $ 1.14  $ 1.09  $ 1.30  $ 1.45  $ 1.19  $ 3.54  $ 3.86

1 Represents anticipated proceeds from a pending insurance claim related to a third quarter 2025 solar tax credit recapture event.

2 Represents recapture of $24.1 million solar tax credit and approximately $8.0 million of estimated tax liability related to anticipated proceeds from pending insurance claim related to a third quarter 2025 recapture event.

15

ENTERPRISE FINANCIAL SERVICES CORP

CONSOLIDATED FINANCIAL SUMMARY (unaudited) (continued)

At

($ in thousands) Sep 30,

2026 Jun 30,

2026 Mar 31,

2026 Dec 31,

2025 Sep 30,

2025

BALANCE SHEET

ASSETS

Cash and due from banks $ 213,259  $ 273,875  $ 258,542  $ 208,080  $ 208,455

Interest-earning deposits 275,281  278,852  376,824  474,720  264,399

Debt and equity investments 3,881,344  3,960,834  3,911,106  3,810,876  3,527,467

Loans held for sale 202  1,145  418  928  681

Loans 12,344,705  11,892,399  11,692,780  11,800,338  11,583,109

Allowance for credit losses (144,519) (139,238) (142,064) (140,022) (148,854)

Total loans, net 12,200,186  11,753,161  11,550,716  11,660,316  11,434,255

Fixed assets, net 56,819  57,318  57,956  58,993  49,248

Goodwill 416,968  416,968  416,968  416,968  365,164

Intangible assets, net 16,948  18,228  19,525  21,175  6,140

Other assets 731,503  638,628  635,773  648,828  546,596

Total assets $ 17,792,510  $ 17,399,009  $ 17,227,828  $ 17,300,884  $ 16,402,405

LIABILITIES AND STOCKHOLDERS’ EQUITY

Noninterest-bearing deposits $ 5,043,875  $ 4,910,235  $ 4,828,375  $ 4,874,115  $ 4,386,513

Interest-bearing deposits 10,083,089  9,592,316  9,696,022  9,735,227  9,181,399

Total deposits 15,126,964  14,502,551  14,524,397  14,609,342  13,567,912

Subordinated debentures and notes 258,409  265,910  93,759  93,688  93,617

FHLB advances 64,000  208,000  —  —  327,000

Other borrowings 179,532  208,166  319,345  387,717  247,006

Other liabilities 246,279  173,536  268,123  170,751  184,538

Total liabilities 15,875,184  15,358,163  15,205,624  15,261,498  14,420,073

Stockholders’ equity:

Preferred stock 71,988  71,988  71,988  71,988  71,988

Common stock 358  363  366  370  370

Additional paid-in capital 976,905  986,133  990,394  1,000,775  997,446

Retained earnings 1,064,907  1,056,072  1,041,038  1,020,840  980,548

Accumulated other comprehensive loss (196,832) (73,710) (81,582) (54,587) (68,020)

Total stockholders’ equity 1,917,326  2,040,846  2,022,204  2,039,386  1,982,332

Total liabilities and stockholders’ equity $ 17,792,510  $ 17,399,009  $ 17,227,828  $ 17,300,884  $ 16,402,405

16

ENTERPRISE FINANCIAL SERVICES CORP

CONSOLIDATED FINANCIAL SUMMARY (unaudited) (continued)

Nine months ended

September 30, 2026 September 30, 2025

($ in thousands) Average

Balance Interest

Income/

Expense Average Yield/ Rate Average

Balance Interest

Income/

Expense Average Yield/ Rate

AVERAGE BALANCE SHEET

Assets

Interest-earning assets:

Loans1, 2

$ 11,874,692  $ 569,508  6.41  % $ 11,351,848  $ 561,635  6.61  %

Taxable securities 2,537,213  83,384  4.39  1,964,496  59,270  4.03

Nontaxable securities2

1,296,933  37,217  3.84  1,181,460  31,360  3.55

Total securities 3,834,146  120,601  4.21  3,145,956  90,630  3.85

Interest-earning deposits 466,757  12,573  3.60  373,870  12,130  4.34

Total interest-earning assets 16,175,595  702,682  5.81  14,871,674  664,395  5.97

Noninterest-earning assets 1,264,114  1,023,889

Total assets $ 17,439,709  $ 15,895,563

Liabilities and Stockholders’ Equity

Interest-bearing liabilities:

Interest-bearing demand accounts $ 3,511,893  $ 46,966  1.79  % $ 3,230,832  $ 51,697  2.14  %

Money market accounts 4,003,666  77,302  2.58  3,656,546  85,675  3.13

Savings accounts 540,544  486  0.12  533,084  555  0.14

Certificates of deposit 1,687,456  43,676  3.46  1,491,047  42,933  3.85

Total interest-bearing deposits 9,743,559  168,430  2.31  8,911,509  180,860  2.71

Subordinated debentures and notes 159,552  7,991  6.70  150,015  7,982  7.11

FHLB advances 37,810  1,117  3.95  96,396  3,295  4.57

Securities sold under agreements to repurchase 212,777  3,690  2.32  211,429  4,764  3.01

Other borrowings 71,712  1,941  3.62  42,932  672  2.09

Total interest-bearing liabilities 10,225,410  183,169  2.39  9,412,281  197,573  2.81

Noninterest-bearing liabilities:

Demand deposits 4,993,391  4,420,552

Other liabilities 164,714  151,199

Total liabilities 15,383,515  13,984,032

Stockholders' equity 2,056,194  1,911,531

Total liabilities and stockholders' equity $ 17,439,709  $ 15,895,563

Total net interest income $ 519,513  $ 466,822

Net interest margin 4.29  % 4.20  %

1 Average balances include nonaccrual loans. Interest income includes net loan fees of $4.9 million and $5.3 million for the nine months ended September 30, 2026 and September 30, 2025, respectively.

2 Non-taxable income is presented on a fully tax-equivalent basis using a tax rate of approximately 25%. The tax-equivalent adjustments were $10.0 million and $8.3 million for the nine months ended September 30, 2026 and September 30, 2025, respectively.

17

ENTERPRISE FINANCIAL SERVICES CORP

CONSOLIDATED FINANCIAL SUMMARY (unaudited) (continued)

At or for the quarter ended

($ in thousands) Sep 30,

2026 Jun 30,

2026 Mar 31,

2026 Dec 31,

2025 Sep 30,

2025

LOAN PORTFOLIO

Commercial and industrial $ 5,467,434  $ 5,257,840  $ 5,168,533  $ 5,231,616  $ 4,943,561

Commercial real estate 5,725,119  5,556,856  5,453,966  5,453,821  5,178,649

Construction real estate 744,787  663,480  667,703  687,584  858,146

Residential real estate 357,184  361,346  346,181  367,682  365,010

Consumer 50,181  52,877  56,397  59,635  237,743

Total loans $ 12,344,705  $ 11,892,399  $ 11,692,780  $ 11,800,338  $ 11,583,109

DEPOSIT PORTFOLIO

Noninterest-bearing demand accounts $ 5,043,875  $ 4,910,235  $ 4,828,375  $ 4,874,115  $ 4,386,513

Interest-bearing demand accounts 3,723,393  3,406,505  3,395,680  3,537,334  3,301,621

Money market and savings accounts 4,664,512  4,482,011  4,610,662  4,528,510  4,228,605

Brokered certificates of deposit 735,993  736,377  724,788  721,977  762,499

Other certificates of deposit 959,191  967,423  964,892  947,406  888,674

Total deposits $ 15,126,964  $ 14,502,551  $ 14,524,397  $ 14,609,342  $ 13,567,912

AVERAGE BALANCES

Loans $ 12,067,288  $ 11,775,879  $ 11,777,727  $ 11,794,459  $ 11,454,183

Securities 3,884,483  3,833,994  3,782,844  3,623,965  3,353,305

Interest-earning assets 16,416,890  16,040,917  16,065,112  15,971,267  15,135,880

Assets 17,696,079  17,307,716  17,311,103  17,099,429  16,178,088

Deposits 14,988,080  14,608,514  14,609,433  14,537,381  13,604,302

Stockholders’ equity 2,040,244  2,052,233  2,076,504  2,022,472  1,964,126

Tangible common equity1

1,533,720  1,544,417  1,567,129  1,524,453  1,520,476

YIELDS (tax-equivalent)

Loans 6.42  % 6.43  % 6.38  % 6.51  % 6.64  %

Securities 4.28  4.21  4.13  4.02  3.93

Interest-earning assets 5.84  5.82  5.77  5.86  5.99

Interest-bearing deposits 2.32  2.30  2.31  2.46  2.67

Deposits 1.54  1.53  1.52  1.64  1.80

Subordinated debentures and notes 6.65  6.87  6.59  6.61  7.78

FHLB advances and other borrowed funds 2.13  3.08  2.92  3.27  3.47

Interest-bearing liabilities 2.42  2.39  2.37  2.52  2.77

Net interest margin 4.30  4.30  4.28  4.26  4.23

1 Refer to Reconciliations of Non-GAAP Financial Measures tables for a reconciliation of these measures to GAAP.

18

ENTERPRISE FINANCIAL SERVICES CORP

CONSOLIDATED FINANCIAL SUMMARY (unaudited) (continued)

Quarter ended

(in thousands, except per share data) Sep 30,

2026 Jun 30,

2026 Mar 31,

2026 Dec 31,

2025 Sep 30,

2025

ASSET QUALITY

Net charge-offs

$ 11,036  $ 13,555  $ 4,407  $ 20,674  $ 4,057

Nonperforming loans 87,270  76,144  64,941  82,809  127,878

Classified assets 416,025  413,779  430,288  410,485  352,792

Nonperforming loans to total loans 0.71  % 0.64  % 0.56  % 0.70  % 1.10  %

Nonperforming assets to total assets 1.03  % 0.92  % 0.87  % 0.95  % 0.83  %

Allowance for credit losses to total loans 1.17  % 1.17  % 1.21  % 1.19  % 1.29  %

Allowance for credit losses to total loans, excluding guaranteed loans1

1.27  % 1.27  % 1.32  % 1.29  % 1.40  %

Allowance for credit losses to nonperforming loans 165.6  % 182.9  % 218.8  % 169.1  % 116.4  %

Net charge-offs to average loans - annualized

0.36  % 0.46  % 0.15  % 0.70  % 0.14  %

WEALTH MANAGEMENT

Trust assets under management $ 3,128,732  $ 3,060,836  $ 2,882,919  $ 2,750,803  $ 2,566,784

SHARE DATA

Book value per common share $ 51.58  $ 54.30  $ 53.31  $ 53.22  $ 51.62

Tangible book value per common share1

$ 39.45  $ 42.30  $ 41.38  $ 41.37  $ 41.58

Market value per share $ 58.95  $ 65.88  $ 54.11  $ 54.00  $ 57.98

Period end common shares outstanding 35,775  36,258  36,581  36,965  37,011

Average basic common shares 36,055  36,438  36,907  36,997  37,015

Average diluted common shares 36,359  36,697  37,152  37,265  37,333

CAPITAL

Total risk-based capital to risk-weighted assets2

14.4  % 15.0  % 13.9  % 13.9  % 14.4  %

Tier 1 capital to risk-weighted assets2

12.2  % 12.7  % 12.9  % 12.8  % 13.3  %

Common equity tier 1 capital to risk-weighted assets2

11.1  % 11.5  % 11.7  % 11.6  % 12.0  %

Tangible common equity to tangible assets1

8.13  % 9.04  % 9.01  % 9.07  % 9.60  %

1 Refer to Reconciliations of Non-GAAP Financial Measures tables for a reconciliation of these measures to GAAP.

2 Capital ratios for the current quarter are preliminary and subject to, among other things, completion and filing of the Company’s regulatory reports and ongoing regulatory review.

19

ENTERPRISE FINANCIAL SERVICES CORP

RECONCILIATION OF NON-GAAP FINANCIAL MEASURES

Quarter ended Nine months ended

($ in thousands) Sep 30,

2026 Jun 30,

2026 Mar 31,

2026 Dec 31,

2025 Sep 30,

2025 Sep 30,

2026 Sep 30,

2025

CORE EFFICIENCY RATIO

Net interest income (GAAP) $ 174,606  $ 168,716  $ 166,147  $ 168,174  $ 158,286  $ 509,469  $ 458,564

Tax-equivalent adjustment 3,306  3,418  3,320  3,477  3,045  10,044  8,258

Noninterest income (GAAP) 13,214  13,478  19,088  25,412  48,624  45,780  87,711

Less insurance recoveries1

—  —  —  —  32,112  —  32,112

Less gain on sales of fixed assets —  687  —  —  —  687  —

Less net gain (loss) on sales of investment securities

—  (2,146) —  (57) —  (2,146) 106

Less net gain (loss) on OREO

(1,402) (302) (295) 6,169  7  (1,999) 86

Core revenue (non-GAAP) $ 192,528  $ 187,373  $ 188,850  $ 190,951  $ 177,836  $ 568,751  $ 522,229

Noninterest expense (GAAP) $ 114,654  $ 115,739  $ 115,137  $ 114,532  $ 109,790  $ 345,530  $ 315,275

Less FDIC special assessment —  —  —  (652) —  —  —

Less amortization on intangibles 1,279  1,297  1,400  1,380  736  3,976  2,344

Less acquisition costs —  —  —  2,548  609  —  1,127

Core noninterest expense (non-GAAP) $ 113,375  $ 114,442  $ 113,737  $ 111,256  $ 108,445  $ 341,554  $ 311,804

Core efficiency ratio (non-GAAP) 58.9  % 61.1  % 60.2  % 58.3  % 61.0  % 60.1  % 59.7  %

1Represents anticipated proceeds from a pending insurance claim related to a third quarter 2025 solar tax credit recapture event.

Quarter ended

(in thousands, except per share data) Sep 30,

2026 Jun 30,

2026 Mar 31,

2026 Dec 31,

2025 Sep 30,

2025

TANGIBLE COMMON EQUITY, TANGIBLE BOOK VALUE PER COMMON SHARE AND TANGIBLE COMMON EQUITY RATIO

Stockholders’ equity (GAAP) $ 1,917,326  $ 2,040,846  $ 2,022,204  $ 2,039,386  $ 1,982,332

Less preferred stock 71,988  71,988  71,988  71,988  71,988

Less goodwill 416,968  416,968  416,968  416,968  365,164

Less intangible assets 16,948  18,228  19,525  21,175  6,140

Tangible common equity (non-GAAP) $ 1,411,422  $ 1,533,662  $ 1,513,723  $ 1,529,255  $ 1,539,040

Less net unrealized losses on HTM securities, after tax 87,082  28,584  39,080  26,431  37,341

Tangible common equity adjusted for unrealized losses on HTM securities (non-GAAP) $ 1,324,340  $ 1,505,078  $ 1,474,643  $ 1,502,824  $ 1,501,699

Common shares outstanding 35,775  36,258  36,581  36,965  37,011

Tangible book value per common share (non-GAAP) $ 39.45  $ 42.30  $ 41.38  $ 41.37  $ 41.58

Total assets (GAAP) $ 17,792,510  $ 17,399,009  $ 17,227,828  $ 17,300,884  $ 16,402,405

Less goodwill 416,968  416,968  416,968  416,968  365,164

Less intangible assets 16,948  18,228  19,525  21,175  6,140

Tangible assets (non-GAAP) $ 17,358,594  $ 16,963,813  $ 16,791,335  $ 16,862,741  $ 16,031,101

Tangible common equity to tangible assets (non-GAAP) 8.13  % 9.04  % 9.01  % 9.07  % 9.60  %

Tangible common equity to tangible assets adjusted for unrealized losses on HTM securities (non-GAAP) 7.63  % 8.87  % 8.78  % 8.91  % 9.37  %

20

Quarter ended Nine months ended

($ in thousands) Sep 30,

2026 Jun 30,

2026 Mar 31,

2026 Dec 31,

2025 Sep 30,

2025 Sep 30,

2026 Sep 30,

2025

RETURN ON AVERAGE TANGIBLE COMMON EQUITY (ROATCE), RETURN ON AVERAGE ASSETS (ROAA) AND DILUTED EARNINGS PER SHARE

Average stockholder’s equity (GAAP) $ 2,040,244  $ 2,052,233  $ 2,076,504  $ 2,022,472  $ 1,964,126  $ 2,056,194  $ 1,911,531

Less average preferred stock 71,988  71,988  71,988  71,988  71,988  71,988  71,988

Less average goodwill 416,968  416,968  416,968  414,858  365,164  416,968  365,164

Less average intangible assets 17,568  18,860  20,419  11,173  6,498  18,938  7,248

Average tangible common equity (non-GAAP) $ 1,533,720  $ 1,544,417  $ 1,567,129  $ 1,524,453  $ 1,520,476  $ 1,548,300  $ 1,467,131

Net income (GAAP) $ 42,444  $ 40,927  $ 49,362  $ 54,794  $ 45,235  $ 132,733  $ 146,580

FDIC special assessment (after tax) —  —  —  (488) —  —  —

Acquisition costs (after tax) —  —  —  1,742  549  —  1,011

Less net gain on sales of fixed assets (after tax) —  515  —  —  —  515  —

Less net gain (loss) on sales of investment securities (after tax)

—  (1,607) —  (43) —  (1,607) 80

Less net gain (loss) on OREO (after tax)

(1,050) (226) (221) 4,621  5  (1,497) 64

Net income adjusted (non-GAAP) $ 43,494  $ 42,245  $ 49,583  $ 51,470  $ 45,779  $ 135,322  $ 147,447

Less preferred stock dividends 938  937  938  937  938  2,813  2,813

Net income available to common stockholders adjusted (non-GAAP) $ 42,556  $ 41,308  $ 48,645  $ 50,533  $ 44,841  $ 132,509  $ 144,634

Return on average common equity (non-GAAP) 8.37  % 8.10  % 9.80  % 10.95  % 9.29  % 8.75  % 10.45  %

Adjusted return on average common equity (non-GAAP) 8.58  % 8.37  % 9.84  % 10.28  % 9.40  % 8.93  % 10.51  %

ROATCE (non-GAAP) 10.74  % 10.39  % 12.53  % 14.02  % 11.56  % 11.22  % 13.10  %

Adjusted ROATCE (non-GAAP) 11.01  % 10.73  % 12.59  % 13.15  % 11.70  % 11.44  % 13.18  %

Average assets $ 17,696,079  $ 17,307,716  $ 17,311,103  $ 17,099,429  $ 16,178,088  $ 17,439,709  $ 15,895,563

Return on average assets (GAAP) 0.95  % 0.95  % 1.16  % 1.27  % 1.11  % 1.02  % 1.23  %

Adjusted return on average assets (non-GAAP) 0.98  % 0.98  % 1.16  % 1.19  % 1.12  % 1.04  % 1.24  %

Average diluted common shares 36,359 36,697 37,152 37,265 37,333 36,727 37,273

Diluted earnings per share (GAAP) $ 1.14  $ 1.09  $ 1.30  $ 1.45  $ 1.19  $ 3.54  $ 3.86

Adjusted diluted earnings per share (non-GAAP) $ 1.17  $ 1.13  $ 1.31  $ 1.36  $ 1.20  $ 3.61  $ 3.88

Quarter ended

($ in thousands) Sep 30,

2026 Jun 30,

2026 Mar 31,

2026 Dec 31,

2025 Sep 30,

2025

CALCULATION OF PRE-PROVISION NET REVENUE (PPNR)

Net interest income (GAAP) $ 174,606  $ 168,716  $ 166,147  $ 168,174  $ 158,286

Noninterest income (GAAP) 13,214  13,478  19,088  25,412  48,624

FDIC special assessment —  —  —  (652) —

Acquisition costs —  —  —  2,548  609

Less net loss on sales of investment securities

—  (2,146) —  (57) —

Less net gain (loss) on OREO

(1,402) (302) (295) 6,169  7

Less gain on sales of fixed assets —  687  —  —  —

Less insurance recoveries —  —  —  —  32,112

Less noninterest expense (GAAP) 114,654  115,739  115,137  114,532  109,790

PPNR (non-GAAP) $ 74,568  $ 68,216  $ 70,393  $ 74,838  $ 65,610

21

At

($ in thousands) Sep 30,

2026 Jun 30,

2026 Mar 31,

2026 Dec 31,

2025 Sep 30,

2025

ALLOWANCE TO LOANS RATIO EXCLUDING GUARANTEED LOANS

Loans (GAAP) $ 12,344,705  $ 11,892,399  $ 11,692,780  $ 11,800,338  $ 11,583,109

Less guaranteed loans 946,578  939,255  935,409  960,132  922,168

Adjusted loans (non-GAAP) $ 11,398,127  $ 10,953,144  $ 10,757,371  $ 10,840,206  $ 10,660,941

Allowance for credit losses $ 144,519  $ 139,238  $ 142,064  $ 140,022  $ 148,854

Allowance for credit losses/loans (GAAP) 1.17  % 1.17  % 1.21  % 1.19  % 1.29  %

Allowance for credit losses/adjusted loans (non-GAAP) 1.27  % 1.27  % 1.32  % 1.29  % 1.40  %

Quarter ended

($ in thousands) Sep 30,

2026 Jun 30,

2026 Mar 31,

2026 Dec 31,

2025 Sep 30,

2025

ADJUSTED EFFECTIVE TAX RATE

Income before income tax expense (GAAP) $ 55,059  $ 52,245  $ 62,855  $ 69,818  $ 88,673

Less insurance recoveries1

—  —  —  —  32,112

Adjusted income before income tax expense (non-GAAP) $ 55,059  $ 52,245  $ 62,855  $ 69,818  $ 56,561

Income tax expense (GAAP) $ 12,615  $ 11,318  $ 13,493  $ 15,024  $ 43,438

Less tax credit recapture and provision for anticipated tax applied to related insurance recoveries1

—  —  —  —  32,112

Adjusted income tax expense (non-GAAP) $ 12,615  $ 11,318  $ 13,493  $ 15,024  $ 11,326

Effective tax rate (GAAP) 22.9  % 21.7  % 21.5  % 21.5  % 49.0  %

Adjusted effective tax rate (non-GAAP) 22.9  % 21.7  % 21.5  % 21.5  % 20.0  %

1Represents $32.1 million of anticipated proceeds from a pending insurance claim related to a third quarter 2025 solar tax credit recapture event included in noninterest income, and $24.1 million of tax liability related to the anticipated recapture plus approximately $8.0 million of estimated tax liability related to the anticipated proceeds from the pending insurance claim included in income tax expense.

22

EX-99.2 — WEBCAST SLIDES

EX-99.2

Filename: q32026efscearningsreleas.htm · Sequence: 3

q32026efscearningsreleas

Exhibit 99.2 Enterprise Financial Services Corp 2026 Third Quarter Earnings Webcast

2 Some of the information in this report may contain “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. Such forward-looking statements may include projections based on management’s current expectations and beliefs concerning future developments and their potential effects on Enterprise Financial Services Corp (the “Company” or “EFSC”) including, without limitation, plans, strategies and goals, and statements about the Company’s expectations regarding revenue and asset growth, financial performance and profitability, loan and deposit growth, liquidity, yields and returns, loan diversification and credit management, stockholder value creation and the impact of acquisitions. Forward-looking statements are typically identified by words such as “believe,” “expect,” “anticipate,” “intend,” “outlook,” “estimate,” “forecast,” “project,” “pro forma,” “pipeline” and other similar words and expressions. Forward-looking statements are subject to numerous assumptions, risks and uncertainties, which change over time. Forward-looking statements speak only as of the date they are made. Because forward-looking statements are subject to assumptions and uncertainties, actual results or future events could differ, possibly materially, from those anticipated in the forward-looking statements and future results could differ materially from historical performance. They are neither statements of historical fact nor guarantees or assurances of future performance. While there is no assurance that any list of risks and uncertainties or risk factors is complete, important factors that could cause actual results to differ materially from those in the forward-looking statements include the following, without limitation: our ability to efficiently integrate acquisitions into our operations, retain the customers of these businesses and grow the acquired operations; our ability to collect insurance proceeds from claims made related to tax recapture events; 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 and market conditions, high unemployment rates, higher inflation and its impacts (including U.S. federal government measures to address higher inflation), impacts of trade and tariff policies, U.S. fiscal debt, budget, debt ceiling and tax matters, and any slowdown in global economic growth; risks associated with rapid increases or decreases in prevailing interest rates; our ability to attract and retain deposits and access to other sources of liquidity; changes in business prospects that could impact goodwill estimates and assumptions; consolidation within the banking industry; competition from banks and other financial institutions; the ability to attract and retain relationship officers and other key personnel; burdens imposed by federal and state regulation; changes in legislative or regulatory requirements, as well as current, pending or future legislation or regulation that could have a negative effect on our revenue and business, including rules and regulations relating to bank products and financial services; changes in accounting policies and practices or accounting standards; natural disasters (including wildfires and earthquakes); terrorist activities, war and geopolitical instability (including in Israel, Iran and Ukraine and the imposition of additional sanctions and export controls in connection therewith), or pandemics, or other health emergencies and their effects on economic and business environments in which we operate, including the related disruption to the financial market and other economic activity, cybersecurity threats and the cost of defending against them, and those factors and risks referenced from time to time in the Company’s filings with the Securities and Exchange Commission (the “SEC”), including in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025, and the Company’s other filings with the SEC. The Company cautions that the preceding list is not exhaustive of all possible risk factors and other factors could also adversely affect the Company’s results. For any forward-looking statements made in this press release or in any documents, EFSC claims the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. Annualized, pro forma, projected and estimated numbers in this document are used for illustrative purposes only, are not forecasts and may not reflect actual results. Readers are cautioned not to place undue reliance on any forward-looking statements. Except to the extent required by applicable law or regulation, EFSC disclaims any obligation to revise or publicly release any revision or update to any of the forward-looking statements included herein to reflect events or circumstances that occur after the date on which such statements were made. Forward-Looking Statements

3 Financial Highlights - 3Q26* Capital • Tangible Common Equity/Tangible Assets** 8.13%, compared to 9.04% • Tangible Book Value Per Common Share** $39.45, compared to $42.30 • CET1 Ratio 11.1%, compared to 11.5% • Quarterly common stock dividend of $0.35 per share in third quarter 2026 ($0.01 increase) • Quarterly preferred stock dividend of $12.50 per share ($0.3125 per depositary share) • Returned $34.0 million to stockholders through common stock repurchases • Net Income $42.4 million, up $1.5 million; EPS $1.14 • Net Interest Income $174.6 million, up $5.9 million; NIM 4.30% • PPNR** $74.6 million, up $6.4 million • ROAA 0.95%, stable compared to linked quarter; PPNR ROAA** 1.67%, compared to 1.58% • ROATCE** 10.74%, compared to 10.39% Earnings *Comparisons noted below are to the linked quarter unless otherwise noted. **A Non-GAAP Measure, Refer to Appendix for Reconciliation.

4 Financial Highlights, continued - 3Q26* Loans & Deposits • Loans $12.3 billion, up $452.3 million • Loan/Deposit Ratio 81.6% • Deposits $15.1 billion, up $624.4 million • Noninterest-bearing Deposits/Total Deposits 33% Asset Quality • Nonperforming Loans/Loans 0.71% • Nonperforming Assets/Assets 1.03% • Allowance Coverage Ratio 1.17%; 1.27% adjusted for guaranteed loans** • Net Charge-Offs $11.0 million *Comparisons noted below are to the linked quarter unless otherwise noted. **A Non-GAAP Measure, Refer to Appendix for Reconciliation.

5 2026 Priorities Improve Asset Quality • Reduce criticized and classified loans • Reduce nonperforming assets • Focused credit underwriting and monitoring Leverage Technology to Enhance Productivity and Efficiency • Expand use of existing technology framework • Evaluate business automation opportunities • Integrate manual procedures into automated workflow processes Organic Loan and Deposit Growth • Disciplined pricing • Expand existing relationships and new client acquisitions • Leverage investment in sales associates

6 Loan Details 3Q26** 2Q26** 3Q25 Qtr Change LTM Change C&I $ 2,707 $ 2,628 $ 2,321 $ 79 $ 386 CRE Investor Owned 3,041 2,903 2,627 138 414 CRE Owner Occupied 1,455 1,422 1,297 33 158 SBA loans* 1,245 1,237 1,258 8 (13) Sponsor Finance* 714 709 774 5 (60) Life Insurance Premium Financing* 1,350 1,250 1,152 100 198 Tax Credits* 750 725 781 25 (31) Residential Real Estate 352 356 359 (4) (7) Construction and Land Development 681 609 784 72 (103) Consumer*** 50 53 230 (3) (180) Total Loans $ 12,345 $ 11,892 $ 11,583 $ 453 $ 762 *Specialty loan category. **Branch acquisition completed in October 2025. ***Certain loans were reclassified from Consumer and into other categories in the fourth quarter of 2025. Prior period amounts were not adjusted. $ In Millions

7 Loans By Region Specialty Lending $4,213 $4,249 $4,404 3Q25 2Q26* 3Q26* $ In Millions Midwest $3,193 $3,277 $3,319 3Q25 2Q26* 3Q26* Southwest $2,005 $2,415 $2,600 3Q25 2Q26* 3Q26* Excludes “Consumer” loans; Region Components: Midwest (St. Louis & Kansas City), Southwest (AZ, NM, Las Vegas, TX), West (Southern California); *Branch acquisition completed in October 2025. West $1,942 $1,898 $1,972 3Q25 2Q26* 3Q26*

8 Deposit Details 3Q26* 2Q26* 3Q25 Qtr Change LTM Change Noninterest-bearing demand accounts $ 5,044 $ 4,910 $ 4,387 $ 134 $ 657 Interest-bearing demand accounts 3,723 3,407 3,302 316 421 Money market accounts 4,140 3,945 3,703 195 437 Savings accounts 525 538 526 (13) (1) Certificates of deposit: Brokered 736 736 762 — (26) Customer 959 967 888 (8) 71 Total Deposits $ 15,127 $ 14,503 $ 13,568 $ 624 $ 1,559 Deposit Verticals (included in total deposits)** $ 4,187 $ 4,064 $ 3,774 $ 123 $ 413 $ In Millions * Branch acquisition completed in October 2025 ** Total deposits excluding Deposit Verticals and brokered CDs increased $501 million from 2Q26 and increased $1.2 billion from 3Q25

9 Deposits By Region Deposit Verticals $3,774 $4,064 $4,187 3Q25 2Q26** 3Q26** $ In Millions Region Components: Midwest (St. Louis & Kansas City), Southwest (AZ, NM, Las Vegas, TX), West (Southern California) *Includes brokered balances **Branch acquisition completed in October 2025. Midwest* $6,392 $6,558 $6,923 3Q25 2Q26** 3Q26** West* $1,340 $1,220 $1,322 3Q25 2Q26** 3Q26** Southwest $2,062 $2,661 $2,695 3Q25 2Q26** 3Q26**

10 Differentiated Deposit Verticals Community Associations 36.0% Property Management 42.5% Legal Industry and Escrow Services 21.5% Community Associations $1.5 billion in deposit accounts specifically designed to serve the needs of community associations. Property Management $1.8 billion in deposits. Specializing in the compliance of Property Management Trust Accounts. Legal Industry and Escrow Services $901 million in deposits. Product lines providing services to independent escrow and non- depository trust companies. • $4.19 billion - 28% of total deposits • $4.32 billion - Average deposits for 3Q26 • $27.5 million - Related deposit costs in noninterest expense, resulting in an average deposit vertical cost of 2.52% in 3Q26 • $132.6 million - Average Deposits per Branch for FDIC Insured Banks with a deposit portfolio between $5-20B* ◦ 32 - The national deposit vertical portfolio is the equivalent of 32 traditional bank branches *Data Source: Deposit data as of June 30th, 2026, per the FDIC Summary of Deposits. 3Q25 4Q25 1Q26 2Q26 3Q26 Community Associations Property Management Legal Industry and Escrow Services $— $500 $1,000 $1,500 $2,000 $ In Millions

11 Core Funding Mix Commercial Business Banking Consumer $ In Millions Note: Brokered deposits were $980.5 million at 3Q26; 3.55% cost of funds Deposit Verticals 3Q26 Total Portfolio Average Account Size & Cost of Funds COMMERCIAL BUSINESS BANKING CONSUMER DEPOSIT VERTICALS Average account size ($ in thousands) 3Q26 $ 374 $ 79 $ 23 $ 101 2Q26 $ 341 $ 78 $ 23 $ 99 3Q25 $ 324 $ 82 $ 23 $ 105 Cost of funds 3Q26 2.17 % 1.17 % 1.46 % 0.57 % 2Q26 2.00 % 1.05 % 1.38 % 0.58 % 3Q25 2.19 % 1.36 % 1.49 % 0.81 % • ~80% of commercial deposits utilize Treasury Management services • ~90% of checking and savings accounts utilize online banking services • ~60% of commercial deposits have a lending relationship Overview 25% 39% 32% 41% 32% 18% 6% 6% 29% 30% 16% 19% 68% 6% 24% $5,375 $4,187$2,862$1,721 DDA IB DDA MMA SAV CD 1 yr or less CD > 1 yr

12 Earnings Per Share Trend - 3Q26 $1.09 $0.13 $(0.01) $(0.08) $0.02 $(0.02) $0.01 $1.14 2Q26 Net Interest Income Noninterest Income Provision for Credit Losses Noninterest Expense Change in ETR Change in Shares 3Q26 Change in Diluted EPS

13 $158.3 $168.2 $166.1 $168.7 $174.6 4.23% 4.26% 4.28% 4.30% 4.30%4.30% 3.90% 3.64% 3.63% 3.67% Net Interest Income Net Interest Margin Avg Fed Funds Rate 3Q25 4Q25 1Q26 2Q26 3Q26 Net Interest Income Trend $ In Millions Net Interest Income 3Q25 4Q25 1Q26 2Q26 3Q26 Net Interest Income - FTE $ 161.3 $ 171.7 $ 169.5 $ 172.1 $ 177.9 Purchase Accounting Amortization/(Accretion) 0.6 (0.2) (0.5) (0.7) 0.2 Adjusted Net Interest Income - FTE (Excluding Purchase Accounting) $ 161.9 $ 171.5 $ 169.0 $ 171.4 $ 178.1 Net Interest Margin 4.23 % 4.26 % 4.28 % 4.30 % 4.30 % Purchase Accounting Amortization/(Accretion) 0.02 % 0.00 % (0.01) % (0.02) % 0.00 % Adjusted Net Interest Income - FTE (Excluding Purchase Accounting) 4.25 % 4.26 % 4.27 % 4.28 % 4.30 %

14 Net Interest Margin 6.64% 6.51% 6.38% 6.43% 6.42% 3.93% 4.02% 4.13% 4.21% 4.28% 5.99% 5.86% 5.77% 5.82% 5.84% Earning asset yield Securities yield Loan yield 3Q25 4Q25 1Q26 2Q26 3Q26 2.67% 2.46% 2.31% 2.30% 2.32% 1.80% 1.64% 1.52% 1.53% 1.54% 2.77% 2.52% 2.37% 2.39% 2.42% Interest-bearing deposit rate Total cost of deposits Interest-bearing liabilities 3Q25 4Q25 1Q26 2Q26 3Q26 Components of Interest-bearing LiabilitiesComponents of Interest-earning Assets 4.30% 0.01% 0.01% (0.01)% (0.01)% 4.30% 2Q26 Short Term Funds Securities Borrowing Mix Deposits 3Q26 Margin Bridge

15 14 70 15 46 36 3Q25 4Q25 1Q26 2Q26 3Q26 $174 $(75) $(108) $200 $452 $292 45.0% 43.9% 44.7% 46.7% 46.6% Organic Loans Acquired Loans Avg Line Draw % 3Q25 4Q25 1Q26 2Q26 3Q26 3Q25 2Q26 3Q26 NPLs/Loans 1.10 % 0.64 % 0.71 % NPAs/Assets 0.83 % 0.92 % 1.03 % ACL/NPLs 116.4 % 182.9 % 165.6 % ACL/Loans** 1.40 % 1.27 % 1.27 % Annualized Net Charge-Offs to Average Loans Provision for Credit Losses* $8.4 $9.2 $7.2 $14.2 $18.1 3Q25 4Q25 1Q26 2Q26 3Q26 $ In Millions bps bps bps bps bps $ In Millions Loan Growth and Average Line of Credit Utilization *Includes credit loss expense on loans, investments and unfunded commitments. **Excludes guaranteed loans. A Non-GAAP Measure, Refer to Appendix for Reconciliation. Credit Trends

16 $139.2 $16.3 $(11.0) $144.5 ACL 2Q26 Portfolio Changes Net Charge-offs ACL 3Q26 Allowance for Credit Losses on Loans $ In Millions • New loans and changes in composition of existing loans • Changes in risk ratings, past due status and reserves on individually evaluated loans • Changes in macroeconomic and qualitative factors $ In Millions 3Q26 Loans ACL ACL as a % of Loans Commercial and industrial $ 5,468 $ 82 1.50 % Commercial real estate 5,725 41 0.72 % Construction real estate 745 13 1.74 % Residential real estate 357 7 1.96 % Consumer 50 2 4.00 % Total $ 12,345 $ 145 1.17 % Reserves on sponsor finance, agricultural, and investor office CRE loans, which are included in the categories above, represented $31.6 million, $2.6 million, and $6.0 million, respectively. Total ACL as a percentage of loans excluding $946.6 million of government guaranteed loans was 1.27%*. Key Assumptions: • Reasonable and supportable forecast period is one year with a one year reversion period. • Forecast considers a weighted average of baseline, upside and downside scenarios. • Primary macroeconomic factors: ◦ Percentage change in GDP ◦ Unemployment ◦ Percentage change in Retail Sales ◦ Percentage change in CRE Index *A Non-GAAP Measure, Refer to Appendix for Reconciliation.

17 Noninterest Income Trend $48.6 $25.4 $19.1 $13.5 $13.2 $6.8 $11.9 $8.8 $4.4 $7.3 $32.1 $(0.3) $3.2 $(0.2) $(1.7) $(5.0) $4.9 $5.1 $5.3 $5.5 $5.4 $2.5 $2.6 $2.5 $2.5 $2.6 $2.6 $2.6 $2.7 $2.8 $2.9 23.5% 13.1% 10.3% 7.4% 7.0% Other income Recaptured tax credit insurance proceeds* Tax credit income (loss) Deposit service charges Card services revenue Wealth management revenue Noninterest income/Total income 3Q25 4Q25 1Q26 2Q26 3Q26 $6.8 $11.9 $8.8 $4.4 $7.3 $1.8 $2.2 $1.8 $3.1 $5.6 $0.6 $0.5 $0.4 $0.5 $0.7 $2.1 $1.9 $2.5 $2.4 $1.8 $0.3 $0.1 $0.1 $0.1 $0.3 $0.9 $1.1 $0.4 $0.5 $0.6 $0.2 $1.8 $0.3 $0.1$6.2 $(0.3) $(0.3) $(1.4) $1.1 $1.4 $(0.1) $(2.1) Miscellaneous income Servicing fees BOLI Swap fees CDE Private equity fund distribution Net gain (loss) on OREO Gain on SBA loan sales Net loss on sales of investment securities 3Q25 4Q25 1Q26 2Q26 3Q26 $ In Millions Noninterest Income Other Noninterest Income Detail *Represents anticipated proceeds from a pending insurance claim related to a third quarter 2025 solar tax credit recapture event.

18 Noninterest Expense Trend Noninterest Expense $ In Millions $27.5 $28.6 $27.4 $28.9 $30.7 $0.6 $2.5 $27.2 $27.5 $26.0 $27.8 $27.5 $4.9 $5.8 $5.9 $5.9 $5.9 $49.6 $50.1 $55.8 $53.1 $50.6 61.0% 58.3% 60.2% 61.1% 58.9% $109.8 $114.5 $115.1 $115.7 $114.7 Other expense Acquisition costs Deposit costs Occupancy Employee compensation and benefits Core efficiency ratio* 3Q25 4Q25 1Q26 2Q26 3Q26 $27.5 $28.6 $27.4 $28.9 $30.7 $12.6 $12.8 $11.3 $11.7 $12.3 $5.0 $5.2 $5.6 $6.0 $5.7 $2.2 $2.3 $1.6 $2.0 $1.7 $3.6 $3.2 $3.5 $4.0 $3.8 $3.4 $3.7 $4.0 $3.9 $5.9 $0.7 $1.4 $1.4 $1.3 $1.3 Miscellaneous expense Data processing Professional fees FDIC and other insurance Loan, legal expenses Amortization expense 3Q25 4Q25 1Q26 2Q26 3Q26 *A Non-GAAP Measure, Refer to Appendix for Reconciliation. Other Noninterest Expense Detail

19 Capital Tangible Common Equity/Tangible Assets 9.60% 9.07% 9.01% 9.04% 8.13% Tangible Common Equity/Tangible Assets* 3Q25 4Q25 1Q26 2Q26 3Q26 *A Non-GAAP Measure, Refer to Appendix for Reconciliation. **Preliminary regulatory capital ratios. Regulatory Capital 10.0% 14.4% 13.9% 13.9% 15.0% 14.4% 6.5% 12.0% 11.6% 11.7% 11.5% 11.1% CET1 Tier 1 Total Risk Based Capital Minimum "Well Capitalized" Ratio 3Q25 4Q25 1Q26 2Q26 3Q26 8.0% 13.3% 12.8% 12.9% 12.7% EFSC Capital Strategy: Low Cost - Highly Flexible High Capital Retention Rate – Strong earnings profile – Sustainable dividend profile Supporting Robust Asset Growth – Organic loan and deposit growth – High quality M&A to enhance commercial franchise and geographic diversification Maintain High Quality Capital Stack – Minimize WACC over time (preferred, sub debt, etc.) – Optimize capital levels CET1 ~10%, Tier 1 ~12%, and Total Capital ~14% Maintain 8-9% TCE – Common stock repurchases – 525,767 shares repurchased at an average price of $64.74 during 3Q26 – M&A deal structures – Drives ROATCE above peer levels TBV and Dividends per Share $41.58 $41.37 $41.38 $42.30 $39.45 $0.31 $0.32 $0.33 $0.34 $0.35 TBV/Share* Dividends per Share 3Q25 4Q25 1Q26 2Q26 3Q26 12.2% **

Appendix

21 Investment Portfolio Breakout AFS & HTM Securities Obligations of U.S. Government- sponsored enterprises 4% Obligations of states and political subdivisions 38% Agency mortgage- backed securities 52% Corporate debt securities 3% U.S. Treasury bills 3% TOTAL $3.8 billion • Effective duration of 5.2 years balances the short 3-year duration of the loan portfolio • Cash flows next 12 months of approximately $675.6 million • 4.28% tax-equivalent yield • Municipal bond portfolio rated A or better • Laddered maturity and repayment structure for consistent cash flows Overview Total AFS (Fair Value) Total HTM (Fair Value) AFS Securities (Net Unrealized Loss) HTM Securities (Net Unrealized Loss) 3Q25 4Q25 1Q26 2Q26 3Q26 $— $1,000 $2,000 $3,000 $(400) $(200) $— $ In Millions $226.6 $575.8 $206.2 $437.5 $153.2 4.99% 4.61% 4.51% 5.03% 4.74% Principal Cost Yield (TEQ) 3Q25 4Q25 1Q26 2Q26 3Q26 Investment Purchase Yield $ In Millions Investment Portfolio

22 EFSC Borrowing Capacity $6.9 $6.6 $6.6 $1.5 $1.2 $1.5 $3.1 $3.0 $2.9 $0.1 $0.1 $0.1 $2.2 $2.3 $2.1 47% 46% 44% FHLB borrowing capacity FRB borrowing capacity Fed Funds lines Unpledged securities Borrowing capacity/Deposits 1Q26 2Q26 3Q26 $ In Billions End of Period and Average Loans to Deposits 85% 81% 81% 82% 82%84% 81% 81% 81% 81% End of period Loans/Deposits Avg Loans/Avg Deposits 3Q25 4Q25 1Q26 2Q26 3Q26 • $1.4 billion available FHLB capacity • $2.9 billion available FRB capacity • $135.0 million in eight federal funds lines • $2.1 billion in unpledged investment securities • $487.9 million cash • $25.0 million available line of credit • Portfolio of saleable SBA loans • Investment portfolio/total assets of 21% • FHLB maximum credit capacity is 45% of assets $0.7 $0.5 $0.5 $0.4 $0.4 $0.7 $1.2 $1.7 $2.1 $2.5 Annual Cash Flows Cumulative Cash Flows 2026 2027 2028 2029 2030 Investment Portfolio Cash Flows* $ In Billions Strong Liquidity Profile *Trailing 12 months ending September 30 of each year Liquidity

23 Office CRE (Non-owner Occupied) Total $644.9 million Midwest 35.7% Southwest 37.2% West 23.3% Specialty 3.8% Office CRE Loans by Location Real Estate/ Rental/Leasing 88.6% Health Care and Social Assistance 3.0% Other 8.4% Office CRE Loans by Industry Type Size Average Risk Rating Number of Loans Balance Average Balance > $10 Million 5.37 19 $ 285.1 $ 15.0 $5-10 Million 5.36 14 93.6 6.7 $2-5 Million 5.47 51 165.5 3.2 < $2 Million 5.34 185 100.7 0.5 Total 5.37 269 $ 644.9 $ 2.4 Office CRE Loans by Size $ In Millions • Average loan-to-origination value 52% • 71% of loans have recourse to owners • Average debt-service coverage ratio (DSCR) of 1.52x • Average market occupancy of 88%; average rents of $24 psf • 42% Class A, 54% Class B, 4% Class C • $51.8 million unfunded commitments 23

24 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 tangible common equity, PPNR, ROATCE, allowance coverage ratio adjusted for guaranteed loans, PPNR return on average assets (“PPNR ROAA”), core efficiency ratio, tangible common equity to tangible assets, and tangible book value per common share, in this release 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. The Company considers its tangible common equity, PPNR, ROATCE, allowance coverage ratio adjusted for guaranteed loans, PPNR return on average assets (“PPNR ROAA”), core efficiency ratio, tangible common equity to tangible assets, and tangible book value per common share, collectively “core performance measures,” presented in this earnings release and the included tables 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 certain non-comparable items, and the Company’s operating performance on an ongoing basis. Core performance measures exclude certain other income and expense items, such as the FDIC special assessment, acquisition costs, accrued insurance proceeds anticipated to be received as a result of recaptured tax credits, the net gain or loss on sales of fixed assets, the net gain or loss on other real estate owned (“OREO”), and the net gain or loss on sales of investment securities, that 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 attached tables, 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 measures for the periods indicated.

25 Reconciliation of Non-GAAP Financial Measures At (in thousands, except per share data) September 30, 2026 June 30, 2026 March 31, 2026 December 31, 2025 September 30, 2025 STOCKHOLDERS’ EQUITY TO TANGIBLE COMMON EQUITY, TOTAL ASSETS TO TANGIBLE ASSETS, TANGIBLE BOOK VALUE PER COMMON SHARE, AND TANGIBLE COMMON EQUITY TO TANGIBLE ASSETS Stockholders’ equity (GAAP) $ 1,917,326 $ 2,040,846 $ 2,022,204 $ 2,039,386 $ 1,982,332 Less preferred stock 71,988 71,988 71,988 71,988 71,988 Less goodwill 416,968 416,968 416,968 416,968 365,164 Less intangible assets 16,948 18,228 19,525 21,175 6,140 Tangible common equity (non-GAAP) $ 1,411,422 $ 1,533,662 $ 1,513,723 $ 1,529,255 $ 1,539,040 Common shares outstanding 35,775 36,258 36,581 36,965 37,011 Tangible book value per common share (non-GAAP) $ 39.45 $ 42.30 $ 41.38 $ 41.37 $ 41.58 Total assets (GAAP) $ 17,792,510 $ 17,399,009 $ 17,227,828 $ 17,300,884 $ 16,402,405 Less goodwill 416,968 416,968 416,968 416,968 365,164 Less intangible assets 16,948 18,228 19,525 21,175 6,140 Tangible assets (non-GAAP) $ 17,358,594 $ 16,963,813 $ 16,791,335 $ 16,862,741 $ 16,031,101 Tangible common equity to tangible assets (non-GAAP) 8.13 % 9.04 % 9.01 % 9.07 % 9.60 % Quarter ended ($ in thousands) September 30, 2026 June 30, 2026 PRE-PROVISION NET REVENUE (PPNR) AND PPNR RETURN ON AVERAGE ASSETS (PPNR ROAA) Net interest income (GAAP) $ 174,606 $ 168,716 Noninterest income (GAAP) 13,214 13,478 Less gain on sales of fixed assets — 687 Less net loss on sales of investment securities — (2,146) Less net loss on OREO (1,402) (302) Less noninterest expense (GAAP) 114,654 115,739 PPNR (non-GAAP) $ 74,568 $ 68,216 Average assets $ 17,696,079 $ 17,307,716 PPNR ROAA (non-GAAP) 1.67 % 1.58 %

26 Reconciliation of Non-GAAP Financial Measures Quarter ended ($ in thousands) September 30, 2026 June 30, 2026 RETURN ON AVERAGE TANGIBLE COMMON EQUITY (ROATCE) Average stockholder’s equity (GAAP) $ 2,040,244 $ 2,052,233 Less average preferred stock 71,988 71,988 Less average goodwill 416,968 416,968 Less average intangible assets 17,568 18,860 Average tangible common equity (non-GAAP) $ 1,533,720 $ 1,544,417 Net income available to common stockholders (GAAP) $ 41,506 $ 39,990 ROATCE (non-GAAP) 10.74 % 10.39 % At ($ in thousands) September 30, 2026 June 30, 2026 September 30, 2025 ALLOWANCE COVERAGE RATIO ADJUSTED FOR GUARANTEED LOANS Loans (GAAP) $ 12,344,705 $ 11,892,399 $ 11,583,109 Less guaranteed loans 946,578 939,255 922,168 Adjusted loans (non-GAAP) $ 11,398,127 $ 10,953,144 $ 10,660,941 Allowance for credit losses $ 144,519 $ 139,238 $ 148,854 Allowance for credit losses/loans (GAAP) 1.17 % 1.17 % 1.29 % Allowance for credit losses/adjusted loans (non-GAAP) 1.27 % 1.27 % 1.40 %

27 Reconciliation of Non-GAAP Financial Measures Quarter ended ($ in thousands) September 30, 2026 June 30, 2026 March 31, 2026 December 31, 2025 September 30, 2025 CORE EFFICIENCY RATIO Net interest income (GAAP) $ 174,606 $ 168,716 $ 166,147 $ 168,174 $ 158,286 Tax-equivalent adjustment 3,306 3,418 3,320 3,477 3,045 Noninterest income (GAAP) 13,214 13,478 19,088 25,412 48,624 Less insurance recoveries1 — — — — 32,112 Less gain on sales of fixed assets — 687 — — — Less net loss on sales of investment securities — (2,146) — (57) — Less net gain (loss) on OREO (1,402) (302) (295) 6,169 7 Core revenue (non-GAAP) $ 192,528 $ 187,373 $ 188,850 $ 190,951 $ 177,836 Noninterest expense (GAAP) $ 114,654 $ 115,739 $ 115,137 $ 114,532 $ 109,790 Less FDIC special assessment — — — (652) — Less amortization on intangibles 1,279 1,297 1,400 1,380 736 Less acquisition costs — — — 2,548 609 Core revenue (non-GAAP) $ 113,375 $ 114,442 $ 113,737 $ 111,256 $ 108,445 Core efficiency ratio (non-GAAP) 58.9 % 61.1 % 60.2 % 58.3 % 61.0 % 1Represents anticipated proceeds from a pending insurance claim related to a third quarter 2025 solar tax credit recapture event.

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v3.26.3

Document and Entity Information Document

Oct. 21, 2026

Document Type

8-K

Document Period End Date

Oct. 21, 2026

Entity Registrant Name

ENTERPRISE FINANCIAL SERVICES CORP

Entity Incorporation, State or Country Code

DE

Entity File Number

001-15373

Entity Tax Identification Number

43-1706259

Entity Address, Address Line One

150 N. Meramec Avenue

Entity Address, City or Town

St. Louis

Entity Address, State or Province

MO

Entity Address, Postal Zip Code

63105

City Area Code

314

Local Phone Number

725-5500

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Entity Central Index Key

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Common Stock

Title of 12(b) Security

Common Stock, par value $0.01 per share

Trading Symbol

EFSC

Security Exchange Name

NASDAQ

Depositary Shares

Title of 12(b) Security

Depositary Shares, Each Representing a 1/40th Interest in a Share of 5.00% Fixed Rate Non-Cumulative Perpetual Preferred Stock, Series A

Trading Symbol

EFSCP

Security Exchange Name

NASDAQ

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