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Form 8-K

sec.gov

8-K — WINTRUST FINANCIAL CORP

Accession: 0001015328-26-000011

Filed: 2026-04-20

Period: 2026-04-20

CIK: 0001015328

SIC: 6022 (STATE COMMERCIAL BANKS)

Item: Results of Operations and Financial Condition

Item: Financial Statements and Exhibits

Documents

8-K — wtfc-20260420.htm (Primary)

EX-99.1 (exhibit9912026-q1.htm)

EX-99.2 (earningsrelease2026-q1pr.htm)

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8-K

8-K (Primary)

Filename: wtfc-20260420.htm · Sequence: 1

wtfc-20260420

0001015328false00010153282026-04-202026-04-200001015328us-gaap:CommonStockMember2026-04-202026-04-200001015328wtfc:DepositorySharesSeriesFPreferredStockMember2026-04-202026-04-20

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): April 20, 2026

WINTRUST FINANCIAL CORPORATION

(Exact name of registrant as specified in its charter)

Illinois 001-35077   36-3873352

(State or other jurisdiction of Incorporation) (Commission File Number) (I.R.S. Employer

Identification No.)

9700 W. Higgins Road, Suite 800

Rosemont Illinois   60018

(Address of principal executive offices)   (Zip Code)

Registrant’s telephone number, including area code (847) 939-9000

Not Applicable

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

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))

Title of Each Class  Ticker Symbol Name of Each Exchange on Which Registered

Common Stock, no par value  WTFC The Nasdaq Global Select Market

Depositary Shares, Each Representing a 1/1,000th Interest in a Share of

WTFCN The Nasdaq Global Select Market

7.875% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series F, no par value

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

The information in this Current Report is being furnished and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information in this Current Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended.

On April 20, 2026, Wintrust Financial Corporation (the “Company”) announced earnings for the first quarter of 2026 and posted on its website the First Quarter 2026 Earnings Release Presentation. Copies of the press release relating to the Company’s earnings results and the related presentation are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively. Certain supplemental information relating to non-GAAP financial measures reported in the attached press release and presentation is included on pages 31 through 33 of Exhibit 99.1 and pages 28 through 31 of Exhibit 99.2.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits

Exhibit

99.1

First Quarter 2026 Earnings Release dated April 20, 2026

99.2

First Quarter 2026 Earnings Release Presentation dated April 20, 2026

2

Signature

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 hereunto duly authorized.

WINTRUST FINANCIAL CORPORATION

(Registrant)

By: /s/ David L. Stoehr

David L. Stoehr

Executive Vice President and

Chief Financial Officer

Date: April 20, 2026

3

INDEX TO EXHIBITS

Exhibit

99.1

First Quarter 2026 Earnings Release dated April 20, 2026

99.2

First Quarter 2026 Earnings Release Presentation dated April 20, 2026

4

EX-99.1

EX-99.1

Filename: exhibit9912026-q1.htm · Sequence: 2

Document

Exhibit 99.1

Wintrust Financial Corporation

9700 W. Higgins Road, Suite 800, Rosemont, Illinois 60018

News Release

FOR IMMEDIATE RELEASE    April 20, 2026

FOR MORE INFORMATION CONTACT:

David A. Dykstra, Vice Chairman & Chief Operating Officer

(847) 939-9000

Amy Yuhn, Executive Vice President, Communications

(847) 939-9591

Web site address: www.wintrust.com

Wintrust Financial Corporation Reports Record Quarterly Net Income

ROSEMONT, ILLINOIS – Wintrust Financial Corporation (“Wintrust”, “the Company”, “we” or “our”) (Nasdaq: WTFC) announced record net income of $227.4 million, or $3.22 per diluted common share, for the first quarter of 2026 compared to net income of $223.0 million, or $3.15 per diluted common share for the fourth quarter of 2025. Pre-tax, pre-provision income (non-GAAP) for the first quarter of 2026 totaled a record $330.5 million, as compared to $329.8 million for the fourth quarter of 2025.

Timothy S. Crane, President and Chief Executive Officer, commented, “We are pleased with our first quarter 2026 results, with diversified loan growth, robust deposit generation and prudent expense management resulting in a fifth consecutive quarter of record net income. Our multi-faceted business model and unique market position continued to build franchise value.”

Additionally, Mr. Crane noted, “Net interest margin in the first quarter remained within our expected range, improving by two basis points to 3.56%. Strong loan growth, coupled with a stable net interest margin supported solid net interest income levels in the first quarter of 2026. Our disciplined approach to underwriting led to strong credit quality with low levels of net charge-offs and non-performing loans.”

Highlights of the first quarter of 2026:

Comparative information to the fourth quarter of 2025, unless otherwise noted

•Total loans increased by $1.0 billion, or 7% annualized.

•Total deposits increased by $1.2 billion, or 8% annualized.

•Total assets increased by $1.0 billion, or 6% annualized.

•Net interest margin increased to 3.54% (3.56% on a fully taxable-equivalent basis, non-GAAP) during the first quarter of 2026.

◦Net interest income decreased to $579.0 million in the first quarter of 2026, compared to $583.9 million in the fourth quarter of 2025, primarily due to two fewer calendar days in the first quarter, partially offset by average earning asset growth during the quarter.

•Provision for credit losses totaled $29.6 million in the first quarter of 2026, compared to a provision for credit losses of $27.6 million in the fourth quarter of 2025.

•Net charge-offs totaled $18.4 million, or 14 basis points of average total loans on an annualized basis, in the first quarter of 2026 down from $21.8 million, or 17 basis points of average total loans on an annualized basis, in the fourth quarter of 2025.

•Non-performing loans totaled $182.7 million and comprised 0.34% of total loans at March 31, 2026, as compared to $185.8 million and 0.35% of total loans at December 31, 2025.

“Our first quarter performance reflected the efficient execution of our strategic priorities to deliver our differentiated customer experience, deliver disciplined and strategic growth and build the foundation for our future”, Mr. Crane said. “We believe the continued momentum in our financial results has us well-positioned for the remainder of 2026. We expect sustained balance

sheet growth, as we manage our expenses while investing appropriately in our businesses, to create consistent value for our shareholders.”

* * *

The graphs shown on pages 3-7 illustrate certain financial highlights of the first quarter of 2026 as well as historical financial performance. See “Supplemental Non-GAAP Financial Measures/Ratios” at Table 17 for additional information with respect to non-GAAP financial measures/ratios, including the reconciliations to the corresponding GAAP financial measures/ratios.

2

3

4

5

*On May 22, 2025, the Company completed the issuance of $425 million of Series F Preferred Stock. The issuance was in contemplation of redeeming $412.5 million of Series D and Series E Preferred Stock that was expected to reprice at rates higher than existing market rates. The Series D and Series E Preferred Stock were redeemed on July 15, 2025.

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7

SUMMARY OF RESULTS:

BALANCE SHEET

Total assets increased $1.0 billion in the first quarter of 2026 compared to the fourth quarter of 2025, driven by a $1.0 billion increase in total loans. The increase in loans was broad-based with growth across most major loan categories.

Total liabilities increased by $0.9 billion in the first quarter of 2026 compared to the fourth quarter of 2025, driven by a $1.2 billion increase in total deposits. Robust organic deposit growth in the first quarter of 2026 was driven by our diverse deposit product offerings. Non-interest bearing deposit balances represented 20% of total deposits and average non-interest bearing deposit balances have remained stable in recent quarters. The Company's loans-to-deposits ratio ended the quarter at 91.8%.

For more information regarding changes in the Company’s balance sheet, see Consolidated Statements of Condition and Table 1 through Table 3 in this report.

NET INTEREST INCOME

For the first quarter of 2026, net interest income totaled $579.0 million, a decrease of $4.9 million compared to the fourth quarter of 2025. The decrease in net interest income in the first quarter of 2026 was driven by two fewer calendar days in the quarter, partially offset by average earning asset growth during the quarter.

Net interest margin was 3.54% (3.56% on a fully taxable-equivalent basis, non-GAAP) during the first quarter of 2026, up two basis points compared to the fourth quarter of 2025, benefiting from two fewer calendar days in the calendar. The yield on earning assets declined 10 basis points during the first quarter of 2026 primarily due to a 13 basis point decrease in loan yields. Funding cost on interest-bearing deposits decreased by 16 basis points compared to the fourth quarter of 2025, which more than offset the reduction in loan yields. The net free funds contribution in the first quarter of 2026 declined four basis points compared to the fourth quarter of 2025.

For more information regarding net interest income, see Table 4 through Table 7 in this report.

ASSET QUALITY

The allowance for credit losses totaled $471.6 million as of March 31, 2026, an increase from $460.5 million as of December 31, 2025. A provision for credit losses totaling $29.6 million was recorded for the first quarter of 2026 compared to $27.6 million recorded in the fourth quarter of 2025. The provision for credit losses recognized in the first quarter of 2026 reflects stable credit quality and a mostly stable macroeconomic forecast. However, given future economic performance remains uncertain, model results capture uncertainty related to credit spreads and equity market valuations. For more information regarding the allowance for credit losses and provision for credit losses, see Table 10 in this report.

Management believes the allowance for credit losses is appropriate to account for expected credit losses. The Company is required to estimate expected credit losses over the life of the Company’s financial assets as of the reporting date. There can be no assurances, however, that future losses will not significantly exceed the amounts provided for, thereby affecting future results of operations. A summary of the allowance for credit losses calculated for the loan components in each portfolio as of March 31, 2026, December 31, 2025, and September 30, 2025 is shown on Table 11 of this report.

Net charge-offs totaled $18.4 million in the first quarter of 2026, a decrease of $3.4 million compared to $21.8 million of net charge-offs in the fourth quarter of 2025. Net charge-offs as a percentage of average total loans were 14 basis points in the first quarter of 2026 on an annualized basis compared to 17 basis points on an annualized basis in the fourth quarter of 2025. For more information regarding net charge-offs, see Table 9 in this report.

The Company’s loan portfolio delinquency rates remain low and manageable. For more information regarding past due loans, see Table 12 in this report.

Non-performing assets and non-performing loans were stable compared to prior quarter. Non-performing assets totaled $200.2 million and comprised 0.28% of total assets as of March 31, 2026, as compared to $206.6 million, or 0.29% of total assets, as of December 31, 2025. Non-performing loans totaled $182.7 million and comprised 0.34% of total loans at March 31, 2026, as compared to $185.8 million and 0.35% of total loans at December 31, 2025. For more information regarding non-performing assets, see Table 13 in this report.

8

NON-INTEREST INCOME

Non-interest income totaled $134.1 million in the first quarter of 2026, increasing $3.7 million, compared to $130.4 million in the fourth quarter of 2025.

Wealth management revenue increased by approximately $2.7 million in the first quarter of 2026, compared to the fourth quarter of 2025. The increase in the first quarter of 2026 was primarily driven by the increase in trust and asset management revenue. Wealth management revenue is comprised of the trust and asset management revenue of Wintrust Private Trust Company and Great Lakes Advisors, the brokerage commissions, managed money fees and insurance product commissions at Wintrust Investments and fees from tax-deferred like-kind exchange services provided by the Chicago Deferred Exchange Company.

Mortgage banking revenue totaled $23.4 million in the first quarter of 2026, compared to $22.6 million in the fourth quarter of 2025. The increase in the first quarter of 2026 was primarily attributed to higher production revenue. For more information regarding mortgage banking revenue, see Table 15 in this report.

The Company recognized approximately $31,000 in net losses on investment securities in the first quarter of 2026 compared to approximately $1.5 million in net gains in the fourth quarter of 2025. The net losses in the first quarter of 2026 were primarily the result of unrealized losses on the Company’s equity investment securities with a readily determinable fair value.

For more information regarding non-interest income, see Table 14 in this report.

NON-INTEREST EXPENSE

Non-interest expense totaled $382.6 million in the first quarter of 2026, decreasing $1.9 million, compared to $384.5 million in the fourth quarter of 2025. Non-interest expense, as a percent of average assets, remained stable at 2.21% in the first quarter of 2026.

Salaries and employee benefits expense increased by approximately $5.9 million in the first quarter of 2026, compared to the fourth quarter of 2025. This was primarily driven by an increase in base salaries as annual merit increases go into effect in the first quarter.

The Company recorded net OREO expense of $207,000 in the first quarter of 2026, compared to net OREO expense of $2.2 million in the fourth quarter of 2025. The primary driver of the decrease in the first quarter can be attributed to valuation adjustments in the fourth quarter of 2025. Net OREO expenses include all costs associated with obtaining, maintaining and selling other real estate owned properties as well as valuation adjustments.

Advertising and marketing expenses in the first quarter of 2026 totaled $13.2 million, which was a $574,000 decrease as compared to the fourth quarter of 2025. Marketing costs are incurred to promote the Company’s brand, commercial banking capabilities and the Company’s various products, to attract loans and deposits and to announce new branch openings as well as the expansion of the Company’s non-bank businesses. The level of marketing expenditures depends on the timing of sponsorship programs utilized which are determined based on the market area, targeted audience, competition and various other factors. Generally, these expenses are elevated in the second and third quarters of each year.

Travel and entertainment expense decreased approximately $2.5 million in the first quarter of 2026, compared to the fourth quarter of 2025. The decrease is primarily attributed to seasonal corporate events that occur in the fourth quarter.

For more information regarding non-interest expense, see Table 16 in this report.

INCOME TAXES

The Company recorded income tax expense of $73.6 million in the first quarter of 2026 compared to $79.2 million in the fourth quarter of 2025. The effective tax rates were 24.4% in the first quarter of 2026 compared to 26.2% in the fourth quarter of 2025. The effective tax rates were impacted by the tax effects related to share-based compensation which fluctuate based on the Company’s stock price and timing of employee stock option exercises and vesting of other share-based awards. The Company recorded net excess tax benefits of $6.6 million in the first quarter of 2026, compared to net excess tax benefits of $70,000 in the fourth quarter of 2025 related to share-based compensation.

9

BUSINESS SUMMARY

Community Banking

Through community banking, the Company provides banking and financial services primarily to individuals, small to mid-sized businesses, local governmental units and institutional clients residing primarily in the local areas the Company services. In the first quarter of 2026, community banking increased its commercial, commercial real estate and residential real estate loan portfolios.

Mortgage banking revenue was $23.4 million for the first quarter of 2026, an increase of $771,000 compared to the fourth quarter of 2025. See Table 15 for more detail. Service charges on deposit accounts totaled $21.0 million in the first quarter of 2026 as compared to $20.4 million in the fourth quarter of 2025. The Company’s gross commercial and commercial real estate loan pipelines remained solid as of March 31, 2026 indicating momentum for expected continued loan growth in the second quarter of 2026.

Specialty Finance

Through specialty finance, the Company offers financing of insurance premiums for businesses and individuals, equipment financing through structured loans and lease products to customers in a variety of industries, accounts receivable financing and value-added, out-sourced administrative services and other services. Originations within the insurance premium financing receivables portfolios were $5.1 billion during the first quarter of 2026. Average balances decreased by $81.0 million, as compared to the fourth quarter of 2025. The Company’s leasing divisions’ portfolio balances increased in the first quarter of 2026, with capital leases, loans, and equipment on operating leases of $3.0 billion, $1.2 billion, and $362.8 million as of March 31, 2026, respectively, compared to $2.9 billion, $1.2 billion, and $360.6 million as of December 31, 2025, respectively. Revenues from the Company’s out-sourced administrative services business were $1.2 million in the first quarter of 2026, which was relatively stable compared to the fourth quarter of 2025.

Wealth Management

Through wealth management, the Company offers a full range of wealth management services, including trust and investment services, tax-deferred like-kind exchange services, asset management, and securities brokerage services. Wealth management revenue totaled $42.1 million in the first quarter of 2026, an increase as compared to the fourth quarter of 2025. At March 31, 2026, the Company’s wealth management subsidiaries had approximately $45.9 billion of assets under administration, which excludes assets owned by the Company and its subsidiary banks.

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WINTRUST FINANCIAL CORPORATION

Key Operating Measures

Wintrust’s key operating measures and growth rates for the first quarter of 2026, as compared to the fourth quarter of 2025 (sequential quarter) and first quarter of 2025 (linked quarter), are shown in the table below:

% or (1)

basis point  (bp) change from

4th Quarter

2025

% or

basis point  (bp) change from

1st Quarter

2025

Three Months Ended

(Dollars in thousands, except per share data) Mar 31, 2026 Dec 31, 2025 Mar 31, 2025

Net income $ 227,388  $ 223,024  $ 189,039  2  %  20  %

Pre-tax income, excluding provision for credit losses (non-GAAP) (2)

330,534  329,811  277,018  0  19

Net income per common share – Diluted 3.22  3.15  2.69  2  20

Cash dividends declared per common share 0.55  0.50  0.50  10  10

Net revenue (3)

713,166  714,264  643,108  0  11

Net interest income 579,024  583,874  526,474  (1) 10

Net interest margin 3.54  % 3.52  % 3.54  % 2  bps —  bps

Net interest margin – fully taxable-equivalent (non-GAAP)(2)

3.56  3.54  3.56  2  —

Net overhead ratio (4)

1.44  1.45  1.58  (1) (14)

Return on average assets 1.32  1.27  1.20  5  12

Return on average common equity 12.76  12.63  12.21  13  55

Return on average tangible common equity (non-GAAP) (2)

14.89  14.83  14.72  6  17

At end of period

Total assets $ 72,157,433 $ 71,142,046 $ 65,870,066 6  %  10  %

Total loans (5)

54,071,292 53,105,101 48,708,390 7  11

Total deposits 58,914,382 57,717,191 53,570,038 8  10

Total shareholders’ equity 7,378,100 7,258,715 6,600,537 7  12

(1)Period-end balance sheet percentage changes are annualized.

(2)See Table 17: Supplemental Non-GAAP Financial Measures/Ratios for additional information on this performance measure/ratio.

(3)Net revenue is net interest income plus non-interest income.

(4)The net overhead ratio is calculated by netting total non-interest expense and total non-interest income, annualizing this amount, and dividing by that period’s average total assets. A lower ratio indicates a higher degree of efficiency.

(5)Excludes mortgage loans held-for-sale.

Certain returns, yields, performance ratios, or quarterly growth rates are “annualized” in this presentation to represent an annual time period. This is done for analytical purposes to better discern, for decision-making purposes, underlying performance trends when compared to full-year or year-over-year amounts. For example, a 5% growth rate for a quarter would represent an annualized 20% growth rate.

11

WINTRUST FINANCIAL CORPORATION

Selected Financial Highlights

Three Months Ended

(Dollars in thousands, except per share data) Mar 31, 2026 Dec 31, 2025 Sep 30, 2025 Jun 30, 2025 Mar 31, 2025

Selected Financial Condition Data (at end of period):

Total assets $ 72,157,433 $ 71,142,046 $ 69,629,638 $ 68,983,318 $ 65,870,066

Total loans (1)

54,071,292 53,105,101 52,063,482 51,041,679 48,708,390

Total deposits 58,914,382 57,717,191 56,711,381 55,816,811 53,570,038

Total shareholders’ equity 7,378,100 7,258,715 7,045,757 7,225,696 6,600,537

Selected Statements of Income Data:

Net interest income $ 579,024  $ 583,874  $ 567,010  $ 546,694  $ 526,474

Net revenue (2)

713,166  714,264  697,837  670,783  643,108

Net income 227,388  223,024  216,254  195,527  189,039

Pre-tax income, excluding provision for credit losses (non-GAAP) (3)

330,534  329,811  317,809  289,322  277,018

Net income per common share – Basic 3.26  3.21  2.82  2.82  2.73

Net income per common share – Diluted 3.22  3.15  2.78  2.78  2.69

Cash dividends declared per common share 0.55  0.50  0.50  0.50  0.50

Selected Financial Ratios and Other Data:

Performance Ratios:

Net interest margin 3.54  % 3.52  % 3.48  % 3.52  % 3.54  %

Net interest margin – fully taxable-equivalent (non-GAAP) (3)

3.56  3.54  3.50  3.54  3.56

Non-interest income to average assets 0.78  0.74  0.76  0.76  0.74

Non-interest expense to average assets 2.21  2.19  2.21  2.32  2.32

Net overhead ratio (4)

1.44  1.45  1.45  1.57  1.58

Return on average assets 1.32  1.27  1.26  1.19  1.20

Return on average common equity 12.76  12.63  11.58  12.07  12.21

Return on average tangible common equity (non-GAAP) (3)

14.89  14.83  13.74  14.44  14.72

Average total assets $ 70,089,123  $ 69,492,268  $ 68,303,036  $ 65,840,345  $ 64,107,042

Average total shareholders’ equity 7,387,713  7,166,608  6,955,543  6,862,040  6,460,941

Average loans to average deposits ratio 93.1  % 92.4  % 92.5  % 93.0  % 92.3  %

Period-end loans to deposits ratio 91.8  92.0  91.8  91.4  90.9

Common Share Data at end of period:

Market price per common share $ 138.94  $ 139.82  $ 132.44  $ 123.98  $ 112.46

Book value per common share 103.10  102.03  98.87  95.43  92.47

Tangible book value per common share (non-GAAP) (3)

89.90  88.66  85.39  81.86  78.83

Common shares outstanding 67,437,300 66,974,913 66,961,209 66,937,732 66,919,325

Other Data at end of period:

Common equity to assets ratio 9.6  % 9.6  % 9.5  % 9.3  % 9.4  %

Tangible common equity ratio (non-GAAP) (3)

8.5  8.5  8.3  8.0  8.1

Tier 1 leverage ratio (5)

9.8  9.6  9.5  10.2  9.6

Risk-based capital ratios:

Tier 1 capital ratio (5)

11.1  11.0  10.9  11.5  10.8

Common equity tier 1 capital ratio (5)

10.4  10.3  10.2  10.0  10.1

Total capital ratio (5)

12.5  12.4  12.4  13.0  12.5

Allowance for credit losses (6)

$ 471,591  $ 460,465  $ 454,586  $ 457,461  $ 448,387

Allowance for loan and unfunded lending-related commitment losses to total loans 0.87  % 0.87  % 0.87  % 0.90  % 0.92  %

Number of:

Bank subsidiaries 16  16  16  16  16

Banking offices 209  209  208  208  208

(1)Excludes mortgage loans held-for-sale.

(2)Net revenue is net interest income plus non-interest income.

(3)See Table 17: Supplemental Non-GAAP Financial Measures/Ratios for additional information on this performance measure/ratio.

(4)The net overhead ratio is calculated by netting total non-interest expense and total non-interest income, annualizing this amount, and dividing by that period’s average total assets. A lower ratio indicates a higher degree of efficiency.

(5)Capital ratios for current quarter-end are estimated.

(6)The allowance for credit losses includes the allowance for loan losses, the allowance for unfunded lending-related commitments and the allowance for held-to-maturity securities losses.

12

WINTRUST FINANCIAL CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CONDITION

(Unaudited) (Unaudited) (Unaudited) (Unaudited)

Mar 31, Dec 31, Sep 30, Jun 30, Mar 31,

(In thousands) 2026 2025 2025 2025 2025

Assets

Cash and due from banks $ 543,654  $ 467,874  $ 565,406  $ 695,501  $ 616,216

Federal funds sold and securities purchased under resale agreements 65  64  63  63  63

Interest-bearing deposits with banks 3,051,665  3,180,553  3,422,452  4,569,618  4,238,237

Available-for-sale securities, at fair value 7,244,282  6,236,263  5,274,124  4,885,715  4,220,305

Held-to-maturity securities, at amortized cost 3,270,207  3,343,905  3,438,406  3,502,186  3,564,490

Equity securities with readily determinable fair value 63,786  63,770  63,445  273,722  270,442

Federal Home Loan Bank and Federal Reserve Bank stock 292,044  291,881  282,755  282,087  281,893

Mortgage loans held-for-sale, at fair value 383,405  340,745  333,883  299,606  316,804

Loans, net of unearned income 54,071,292  53,105,101  52,063,482  51,041,679  48,708,390

Allowance for loan losses (390,651) (379,283) (386,622) (391,654) (378,207)

Net loans 53,680,641  52,725,818  51,676,860  50,650,025  48,330,183

Premises, software and equipment, net 777,603  781,611  775,425  776,324  776,679

Lease investments, net 362,766  360,646  301,000  289,768  280,472

Accrued interest receivable and other assets 1,596,617  1,617,682  1,614,674  1,610,025  1,598,255

Receivable on unsettled securities sales —  835,275  978,209  240,039  463,023

Goodwill 797,658  797,960  797,639  798,144  796,932

Other acquisition-related intangible assets 93,040  97,999  105,297  110,495  116,072

Total assets $ 72,157,433  $ 71,142,046  $ 69,629,638  $ 68,983,318  $ 65,870,066

Liabilities and Shareholders’ Equity

Deposits:

Non-interest-bearing $ 12,112,891  $ 11,423,701  $ 10,952,146  $ 10,877,166  $ 11,201,859

Interest-bearing 46,801,491  46,293,490  45,759,235  44,939,645  42,368,179

Total deposits 58,914,382  57,717,191  56,711,381  55,816,811  53,570,038

Federal Home Loan Bank advances 3,451,309  3,451,309  3,151,309  3,151,309  3,151,309

Other borrowings 340,647  477,966  579,328  625,392  529,269

Subordinated notes 298,717  298,636  298,536  298,458  298,360

Junior subordinated debentures 253,566  253,566  253,566  253,566  253,566

Payable on unsettled securities purchases —  —  —  39,105  —

Accrued interest payable and other liabilities 1,520,712  1,684,663  1,589,761  1,572,981  1,466,987

Total liabilities 64,779,333  63,883,331  62,583,881  61,757,622  59,269,529

Shareholders’ Equity:

Preferred stock 425,000  425,000  425,000  837,500  412,500

Common stock 67,525  67,062  67,042  67,025  67,007

Surplus 2,546,792  2,534,024  2,521,306  2,495,637  2,494,347

Treasury stock (13,970) (9,156) (9,150) (9,156) (9,156)

Retained earnings 4,719,561  4,537,539  4,356,367  4,200,923  4,045,854

Accumulated other comprehensive loss (366,808) (295,754) (314,808) (366,233) (410,015)

Total shareholders’ equity 7,378,100  7,258,715  7,045,757  7,225,696  6,600,537

Total liabilities and shareholders’ equity $ 72,157,433  $ 71,142,046  $ 69,629,638  $ 68,983,318  $ 65,870,066

13

WINTRUST FINANCIAL CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

Three Months Ended

(Dollars in thousands, except per share data) Mar 31,

2026 Dec 31,

2025 Sep 30,

2025 Jun 30,

2025 Mar 31,

2025

Interest income

Interest and fees on loans $ 797,889  $ 822,494  $ 832,140  $ 797,997  $ 768,362

Mortgage loans held-for-sale 4,615  5,607  4,757  4,872  4,246

Interest-bearing deposits with banks 19,150  27,190  34,992  34,317  36,766

Federal funds sold and securities purchased under resale agreements 64  77  75  276  179

Investment securities 100,278  95,461  86,426  78,053  72,016

Trading account securities —  —  —  —  11

Federal Home Loan Bank and Federal Reserve Bank stock 5,564  5,497  5,444  5,393  5,307

Brokerage customer receivables —  —  —  —  78

Total interest income 927,560  956,326  963,834  920,908  886,965

Interest expense

Interest on deposits 309,187  332,178  355,846  333,470  320,233

Interest on Federal Home Loan Bank advances 27,701  26,408  26,007  25,724  25,441

Interest on other borrowings 4,026  5,956  6,887  6,957  6,792

Interest on subordinated notes 3,719  3,737  3,717  3,735  3,714

Interest on junior subordinated debentures 3,903  4,173  4,367  4,328  4,311

Total interest expense 348,536  372,452  396,824  374,214  360,491

Net interest income 579,024  583,874  567,010  546,694  526,474

Provision for credit losses 29,594  27,588  21,768  22,234  23,963

Net interest income after provision for credit losses 549,430  556,286  545,242  524,460  502,511

Non-interest income

Wealth management 42,059  39,365  37,188  36,821  34,042

Mortgage banking 23,396  22,625  24,451  23,170  20,529

Service charges on deposit accounts 20,970  20,402  19,825  19,502  19,362

(Losses) gains on investment securities, net (31) 1,505  2,972  650  3,196

Fees from covered call options 4,669  5,992  5,619  5,624  3,446

Trading gains (losses), net 10  (257) 172  151  (64)

Operating lease income, net 19,154  16,365  15,466  15,166  15,287

Other 23,915  24,393  25,134  23,005  20,836

Total non-interest income 134,142  130,390  130,827  124,089  116,634

Non-interest expense

Salaries and employee benefits 228,447  222,557  219,668  219,541  211,526

Software and equipment 35,654  36,096  35,027  36,522  34,717

Operating lease equipment 10,987  11,034  10,409  10,757  10,471

Occupancy, net 20,566  20,105  20,809  20,228  20,778

Data processing 11,266  11,809  11,329  12,110  11,274

Advertising and marketing 13,218  13,792  19,027  18,761  12,272

Professional fees 7,375  8,280  7,465  9,243  9,044

Amortization of other acquisition-related intangible assets 4,958  4,999  5,196  5,580  5,618

FDIC insurance 10,990  10,562  11,418  10,971  10,926

Other real estate owned (“OREO”) expenses, net 207  2,162  262  505  643

Other 38,964  43,057  39,418  37,243  38,821

Total non-interest expense 382,632  384,453  380,028  381,461  366,090

Income before taxes 300,940  302,223  296,041  267,088  253,055

Income tax expense 73,552  79,199  79,787  71,561  64,016

Net income $ 227,388  $ 223,024  $ 216,254  $ 195,527  $ 189,039

Preferred stock dividends 8,367  8,367  13,295  6,991  6,991

Preferred stock redemption —  —  14,046  —  —

Net income applicable to common shares $ 219,021  $ 214,657  $ 188,913  $ 188,536  $ 182,048

Net income per common share - Basic $ 3.26  $ 3.21  $ 2.82  $ 2.82  $ 2.73

Net income per common share - Diluted $ 3.22  $ 3.15  $ 2.78  $ 2.78  $ 2.69

Cash dividends declared per common share $ 0.55  $ 0.50  $ 0.50  $ 0.50  $ 0.50

Weighted average common shares outstanding 67,246 66,970 66,952 66,931 66,726

Dilutive potential common shares 851  1,143  1,028  888  923

Average common shares and dilutive common shares 68,097  68,113  67,980  67,819  67,649

14

TABLE 1: LOAN PORTFOLIO MIX AND GROWTH RATES

% Growth From (1)

(Dollars in thousands) Mar 31, 2026 Dec 31, 2025 Sep 30, 2025 Jun 30,

2025 Mar 31, 2025

Dec 31,

2025 (2)

Mar 31, 2025

Balance:

Mortgage loans held-for-sale, excluding early buy-out exercised loans guaranteed by U.S. government agencies $ 249,350  $ 217,136  $ 211,360  $ 192,633  $ 181,580  60  % 37  %

Mortgage loans held-for-sale, early buy-out exercised loans guaranteed by U.S. government agencies 134,055  123,609  122,523  106,973  135,224  34  (1)

Total mortgage loans held-for-sale $ 383,405  $ 340,745  $ 333,883  $ 299,606  $ 316,804  51  % 21  %

Core loans:

Commercial

Commercial and industrial $ 7,620,239  $ 7,267,505  $ 7,135,083  $ 7,028,247  $ 6,871,206  20  % 11  %

Asset-based lending 1,558,089  1,512,888  1,588,522  1,663,693  1,701,962  12  (8)

Municipal 839,633  868,958  804,986  771,785  798,646  (14) 5

Leases 3,002,014  2,921,366  2,834,563  2,757,331  2,680,943  11  12

Commercial real estate

Residential construction 53,097  54,753  60,923  59,027  55,849  (12) (5)

Commercial construction 1,959,375  2,013,244  2,273,545  2,165,263  2,086,797  (11) (6)

Land 311,470  341,585  323,685  304,827  306,235  (36) 2

Office 1,652,482  1,688,614  1,578,208  1,601,208  1,641,555  (9) 1

Industrial 3,323,977  3,167,768  2,912,547  2,824,889  2,677,555  20  24

Retail 1,469,658  1,436,252  1,478,861  1,452,351  1,402,837  9  5

Multi-family 3,565,419  3,445,507  3,306,597  3,200,578  3,091,314  14  15

Mixed use and other 1,826,808  1,793,013  1,684,841  1,683,867  1,652,759  8  11

Home equity 471,264  480,525  484,202  466,815  455,683  (8) 3

Residential real estate

Residential real estate loans for investment 4,319,941  4,171,439  4,019,046  3,814,715  3,561,417  14  21

Residential mortgage loans, early buy-out eligible loans guaranteed by U.S. government agencies 83,036  84,706  75,088  80,800  86,952  (8) (5)

Residential mortgage loans, early buy-out exercised loans guaranteed by U.S. government agencies 62,189  61,087  49,736  53,267  36,790  7 69

Total core loans $ 32,118,691  $ 31,309,210  $ 30,610,433  $ 29,928,663  $ 29,108,500  10  % 10  %

Niche loans:

Commercial

Franchise $ 1,293,639  $ 1,298,493  $ 1,298,140  $ 1,286,265  $ 1,262,555  (2) % 2  %

Mortgage warehouse lines of credit 1,800,972  1,515,003  1,204,661  1,232,530  1,019,543  77  77

Community Advantage - homeowners association 526,274  532,027  537,696  526,595  525,492  (4) —

Insurance agency lending 1,122,361  1,128,446  1,140,691  1,120,985  1,070,979  (2) 5

Premium Finance receivables

U.S. property & casualty insurance 7,127,234  7,308,054  7,502,901  7,378,340  6,486,663  (10) 10

Canada property & casualty insurance 763,097  875,362  863,391  944,836  753,199  (52) 1

Life insurance 9,196,382  9,023,642  8,758,553  8,506,960  8,365,140  8  10

Consumer and other 122,642  114,864  147,016  116,505  116,319  27  5

Total niche loans $ 21,952,601  $ 21,795,891  $ 21,453,049  $ 21,113,016  $ 19,599,890  3  % 12  %

Total loans, net of unearned income $ 54,071,292  $ 53,105,101  $ 52,063,482  $ 51,041,679  $ 48,708,390  7  % 11  %

(1)NM - Not Meaningful.

(2)Annualized.

15

TABLE 2: DEPOSIT PORTFOLIO MIX AND GROWTH RATES

% Growth From

(Dollars in thousands) Mar 31,

2026 Dec 31,

2025 Sep 30,

2025 Jun 30,

2025 Mar 31,

2025

Dec 31,

2025 (1)

Mar 31, 2025

Balance:

Non-interest-bearing $ 12,112,891 $ 11,423,701 $ 10,952,146 $ 10,877,166 $ 11,201,859 24  % 8  %

NOW and interest-bearing demand deposits 5,987,258 6,233,753 6,710,919 6,795,725 6,340,168 (16) (6)

Wealth management deposits (2)

1,670,620 1,907,647 1,600,735 1,595,764 1,408,790 (50) 19

Money market 21,714,267 21,368,924 20,270,382 19,556,041 18,074,733 7  20

Savings 6,942,565 6,905,216 6,758,743 6,659,419 6,576,251 2  6

Time certificates of deposit 10,486,781 9,877,950 10,418,456 10,332,696 9,968,237 25  5

Total deposits $ 58,914,382 $ 57,717,191 $ 56,711,381 $ 55,816,811 $ 53,570,038 8  % 10  %

Mix:

Non-interest-bearing 20  % 20  % 19  % 19  % 21  %

NOW and interest-bearing demand deposits 10  11  12  12  12

Wealth management deposits (2)

3  3  3  3  3

Money market 37  37  36  35  34

Savings 12  12  12  12  12

Time certificates of deposit 18  17  18  19  18

Total deposits 100  % 100  % 100  % 100  % 100  %

(1)Annualized.

(2)Represents deposit balances of the Company’s subsidiary banks from brokerage customers of Wintrust Investments, Chicago Deferred Exchange Company, LLC (“CDEC”), and trust and asset management customers of the Company.

TABLE 3: TIME CERTIFICATES OF DEPOSIT MATURITY/RE-PRICING ANALYSIS

As of March 31, 2026

(Dollars in thousands) Total Time

Certificates of

Deposit Weighted-Average

Rate of Maturing

Time Certificates

of Deposit

1-3 months $ 2,650,966  3.45  %

4-6 months 5,018,880  3.51

7-9 months 1,589,764  3.37

10-12 months 822,123  3.40

13-18 months 243,686  2.88

19-24 months 70,182  2.85

24+ months 91,180  2.72

Total $ 10,486,781  3.44  %

16

TABLE 4: QUARTERLY AVERAGE BALANCES

Average Balance for three months ended,

Mar 31, Dec 31, Sep 30, Jun 30, Mar 31,

(In thousands) 2026 2025 2025 2025 2025

Interest-bearing deposits with banks, securities purchased under resale agreements and cash equivalents (1)

$ 2,247,083  $ 2,842,829  $ 3,276,683  $ 3,308,199  $ 3,520,048

Investment securities (2)

10,616,617  10,084,138  9,377,930  8,801,560  8,409,735

FHLB and FRB stock (3)

291,972  284,643  282,338  282,001  281,702

Liquidity management assets (4)

$ 13,155,672  $ 13,211,610  $ 12,936,951  $ 12,391,760  $ 12,211,485

Other earning assets (4) (5)

—  —  —  —  13,140

Mortgage loans held-for-sale 317,047  357,672  295,365  310,534  286,710

Loans, net of unearned income (4) (6)

52,845,685  52,193,637  51,403,566  49,517,635  47,833,380

Total earning assets (4)

$ 66,318,404  $ 65,762,919  $ 64,635,882  $ 62,219,929  $ 60,344,715

Allowance for loan and investment security losses (391,810) (404,075) (410,681) (398,685) (375,371)

Cash and due from banks 534,189  517,616  495,292  478,707  476,423

Other assets 3,628,340  3,615,808  3,582,543  3,540,394  3,661,275

Total assets

$ 70,089,123  $ 69,492,268  $ 68,303,036  $ 65,840,345  $ 64,107,042

NOW and interest-bearing demand deposits $ 6,081,218  $ 6,133,333  $ 6,687,292  $ 6,423,050  $ 6,046,189

Wealth management deposits 1,858,560  1,925,808  1,604,142  1,552,989  1,574,480

Money market accounts 21,156,125  20,475,659  19,431,021  18,184,754  17,581,141

Savings accounts 6,921,251  6,814,263  6,723,325  6,578,698  6,479,444

Time deposits 9,782,112  10,045,136  10,319,719  9,841,702  9,406,126

Interest-bearing deposits $ 45,799,266  $ 45,394,199  $ 44,765,499  $ 42,581,193  $ 41,087,380

FHLB advances (3)

3,451,312  3,203,483  3,151,310  3,151,310  3,151,309

Other borrowings 442,200  547,507  614,892  593,657  582,139

Subordinated notes 298,661  298,576  298,481  298,398  298,306

Junior subordinated debentures 253,566  253,566  253,566  253,566  253,566

Total interest-bearing liabilities

$ 50,245,005  $ 49,697,331  $ 49,083,748  $ 46,878,124  $ 45,372,700

Non-interest-bearing deposits 10,963,887  11,080,254  10,791,709  10,643,798  10,732,156

Other liabilities 1,492,518  1,548,075  1,472,036  1,456,383  1,541,245

Equity 7,387,713  7,166,608  6,955,543  6,862,040  6,460,941

Total liabilities and shareholders’ equity

$ 70,089,123  $ 69,492,268  $ 68,303,036  $ 65,840,345  $ 64,107,042

Net free funds/contribution (7)

$ 16,073,399  $ 16,065,588  $ 15,552,134  $ 15,341,805  $ 14,972,015

(1)Includes interest-bearing deposits from banks and securities purchased under resale agreements with original maturities of greater than three months. Cash equivalents include federal funds sold and securities purchased under resale agreements with original maturities of three months or less.

(2)Investment securities includes investment securities classified as available-for-sale and held-to-maturity, and equity securities with readily determinable fair values. Equity securities without readily determinable fair values are included within other assets.

(3)Federal Home Loan Bank (“FHLB”) and Federal Reserve Bank (“FRB”)

(4)See Table 17: Supplemental Non-GAAP Financial Measures/Ratios for additional information on this performance measure/ratio.

(5)Other earning assets include brokerage customer receivables and trading account securities.

(6)Loans, net of unearned income, include non-accrual loans.

(7)Net free funds are the difference between total average earning assets and total average interest-bearing liabilities. The estimated contribution to net interest margin from net free funds is calculated using the rate paid for total interest-bearing liabilities.

17

TABLE 5: QUARTERLY NET INTEREST INCOME

Net Interest Income for three months ended,

Mar 31, Dec 31, Sep 30, Jun 30, Mar 31,

(In thousands) 2026 2025 2025 2025 2025

Interest income:

Interest-bearing deposits with banks, securities purchased under resale agreements and cash equivalents $ 19,214  $ 27,267  $ 35,067  $ 34,593  $ 36,945

Investment securities 100,864  96,122  87,101  78,733  72,706

FHLB and FRB stock (1)

5,564  5,497  5,444  5,393  5,307

Liquidity management assets (2)

$ 125,642  $ 128,886  $ 127,612  $ 118,719  $ 114,958

Other earning assets (2)

—  —  —  —  92

Mortgage loans held-for-sale 4,615  5,607  4,757  4,872  4,246

Loans, net of unearned income (2)

799,915  824,628  834,294  800,197  770,568

Total interest income $ 930,172  $ 959,121  $ 966,663  $ 923,788  $ 889,864

Interest expense:

NOW and interest-bearing demand deposits $ 29,666  $ 31,681  $ 40,448  $ 37,517  $ 33,600

Wealth management deposits 8,941  10,011  8,415  8,182  8,606

Money market accounts 155,299  163,585  169,831  155,890  146,374

Savings accounts 30,672  34,371  38,844  37,637  35,923

Time deposits 84,609  92,530  98,308  94,244  95,730

Interest-bearing deposits $ 309,187  $ 332,178  $ 355,846  $ 333,470  $ 320,233

FHLB advances (1)

27,701  26,408  26,007  25,724  25,441

Other borrowings 4,026  5,956  6,887  6,957  6,792

Subordinated notes 3,719  3,737  3,717  3,735  3,714

Junior subordinated debentures 3,903  4,173  4,367  4,328  4,311

Total interest expense $ 348,536  $ 372,452  $ 396,824  $ 374,214  $ 360,491

Less: Fully taxable-equivalent adjustment (2,612) (2,795) (2,829) (2,880) (2,899)

Net interest income (GAAP) (3)

579,024  583,874  567,010  546,694  526,474

Fully taxable-equivalent adjustment 2,612  2,795  2,829  2,880  2,899

Net interest income, fully taxable-equivalent (non-GAAP) (3)

$ 581,636  $ 586,669  $ 569,839  $ 549,574  $ 529,373

(1)Federal Home Loan Bank (“FHLB”) and Federal Reserve Bank (“FRB”)

(2)Interest income on tax-advantaged loans, trading securities and investment securities reflects a taxable-equivalent adjustment based on the marginal federal corporate tax rate in effect as of the applicable period.

(3)See Table 17: Supplemental Non-GAAP Financial Measures/Ratios for additional information on this performance measure/ratio.

18

TABLE 6: QUARTERLY NET INTEREST MARGIN

Net Interest Margin for three months ended,

Mar 31, 2026 Dec 31, 2025 Sep 30,

2025 Jun 30, 2025 Mar 31,

2025

Yield earned on:

Interest-bearing deposits with banks, securities purchased under resale agreements and cash equivalents 3.47  % 3.81  % 4.25  % 4.19  % 4.26  %

Investment securities 3.85  3.78  3.68  3.59  3.51

FHLB and FRB stock (1)

7.73  7.66  7.65  7.67  7.64

Liquidity management assets 3.87  % 3.87  % 3.91  % 3.84  % 3.82  %

Other earning assets —  —  —  —  2.84

Mortgage loans held-for-sale 5.90  6.22  6.39  6.29  6.01

Loans, net of unearned income 6.14  6.27  6.44  6.48  6.53

Total earning assets 5.69  % 5.79  % 5.93  % 5.96  % 5.98  %

Rate paid on:

NOW and interest-bearing demand deposits 1.98  % 2.05  % 2.40  % 2.34  % 2.25  %

Wealth management deposits 1.95  2.06  2.08  2.11  2.22

Money market accounts 2.98  3.17  3.47  3.44  3.38

Savings accounts 1.80  2.00  2.29  2.29  2.25

Time deposits 3.51  3.65  3.78  3.84  4.13

Interest-bearing deposits 2.74  % 2.90  % 3.15  % 3.14  % 3.16  %

FHLB advances 3.26  3.27  3.27  3.27  3.27

Other borrowings 3.69  4.32  4.44  4.70  4.73

Subordinated notes 5.05  4.97  4.94  5.02  5.05

Junior subordinated debentures 6.24  6.53  6.83  6.85  6.90

Total interest-bearing liabilities 2.81  % 2.97  % 3.21  % 3.20  % 3.22  %

Interest rate spread (2) (3)

2.88  % 2.82  % 2.72  % 2.76  % 2.76  %

Less: Fully taxable-equivalent adjustment (0.02) (0.02) (0.02) (0.02) (0.02)

Net free funds/contribution (4)

0.68  0.72  0.78  0.78  0.80

Net interest margin (GAAP) (3)

3.54  % 3.52  % 3.48  % 3.52  % 3.54  %

Fully taxable-equivalent adjustment 0.02  0.02  0.02  0.02  0.02

Net interest margin, fully taxable-equivalent (non-GAAP) (3)

3.56  % 3.54  % 3.50  % 3.54  % 3.56  %

(1)Federal Home Loan Bank (“FHLB”) and Federal Reserve Bank (“FRB”)

(2)Interest rate spread is the difference between the yield earned on earning assets and the rate paid on interest-bearing liabilities.

(3)See Table 17: Supplemental Non-GAAP Financial Measures/Ratios for additional information on this performance measure/ratio.

(4)Net free funds are the difference between total average earning assets and total average interest-bearing liabilities. The estimated contribution to net interest margin from net free funds is calculated using the rate paid for total interest-bearing liabilities.

19

TABLE 7: INTEREST RATE SENSITIVITY

As an ongoing part of its financial strategy, the Company attempts to manage the impact of fluctuations in market interest rates on net interest income. Management measures its exposure to changes in interest rates by modeling many different interest rate scenarios.

The following interest rate scenarios display the percentage change in net interest income over a one-year time horizon assuming increases and decreases of 100 and 200 basis points as compared to projected net interest income in a scenario with no assumed rate changes. The Static Shock Scenario results incorporate actual cash flows and repricing characteristics for balance sheet instruments following an instantaneous, parallel change in market rates based upon a static (i.e. no growth or constant) balance sheet. Conversely, the Ramp Scenario results incorporate management’s projections of future volume and pricing of each of the product lines following a gradual, parallel change in market rates over twelve months. Actual results may differ from these simulated results due to timing, magnitude, and frequency of interest rate changes as well as changes in market conditions and management strategies. The interest rate sensitivity for both the Static Shock and Ramp Scenario is as follows:

Static Shock Scenario +200 Basis Points +100 Basis Points -100 Basis Points -200 Basis Points

Mar 31, 2026 (0.8) % (0.1) % (1.0) % (1.9) %

Dec 31, 2025 (1.6) (0.5) (0.5) (0.8)

Sep 30, 2025 (2.3) (0.8) 0.0  (0.4)

Jun 30, 2025 (1.5) (0.4) (0.2) (1.2)

Mar 31, 2025 (1.8) (0.6) (0.2) (1.2)

Ramp Scenario +200 Basis Points +100 Basis Points -100 Basis Points -200 Basis Points

Mar 31, 2026 (0.1) % 0.0  % (0.1) % (0.3) %

Dec 31, 2025 (0.0) 0.1  (0.1) (0.2)

Sep 30, 2025 (0.2) (0.1) 0.1  (0.1)

Jun 30, 2025 0.0  0.0  (0.1) (0.4)

Mar 31, 2025 0.2  0.2  (0.1) (0.5)

As shown above, the magnitude of potential changes in net interest income in various interest rate scenarios has continued to remain relatively neutral. Management has taken action to reposition its sensitivity to interest rates to stabilize net interest margin following the rise in short term interest rates in 2022 and 2023. To this end, management has executed various derivative instruments including collars, floors and receive-fixed swaps to hedge variable-rate loan exposures. The Company will continue to monitor current and projected interest rates and may execute additional derivatives to mitigate potential fluctuations in the net interest margin in future periods.

20

TABLE 8: MATURITIES AND SENSITIVITIES TO CHANGES IN INTEREST RATES

Loans repricing or contractual maturity period

As of March 31, 2026 One year or

less From one to

five years From five to fifteen years After fifteen years Total

(In thousands)

Commercial

Fixed rate $ 521,142  $ 4,062,342  $ 2,182,827  $ 19,916  $ 6,786,227

Variable rate 10,975,702  1,292  —  —  10,976,994

Total commercial $ 11,496,844  $ 4,063,634  $ 2,182,827  $ 19,916  $ 17,763,221

Commercial real estate

Fixed rate $ 860,484  $ 2,648,718  $ 345,954  $ 71,217  $ 3,926,373

Variable rate 10,225,429  10,419  65  —  10,235,913

Total commercial real estate $ 11,085,913  $ 2,659,137  $ 346,019  $ 71,217  $ 14,162,286

Home equity

Fixed rate $ 9,160  $ 1,141  $ —  $ 8  $ 10,309

Variable rate 460,955  —  —  —  460,955

Total home equity $ 470,115  $ 1,141  $ —  $ 8  $ 471,264

Residential real estate

Fixed rate $ 20,050  $ 4,549  $ 68,021  $ 1,052,334  $ 1,144,954

Variable rate 126,191  776,281  2,417,740  —  3,320,212

Total residential real estate $ 146,241  $ 780,830  $ 2,485,761  $ 1,052,334  $ 4,465,166

Premium finance receivables - property & casualty

Fixed rate $ 7,762,445  $ 127,886  $ —  $ —  $ 7,890,331

Variable rate —  —  —  —  —

Total premium finance receivables - property & casualty $ 7,762,445  $ 127,886  $ —  $ —  $ 7,890,331

Premium finance receivables - life insurance

Fixed rate $ 55,951  $ 88,566  $ —  $ —  $ 144,517

Variable rate 9,051,865  —  —  —  9,051,865

Total premium finance receivables - life insurance $ 9,107,816  $ 88,566  $ —  $ —  $ 9,196,382

Consumer and other

Fixed rate $ 29,654  $ 8,473  $ 857  $ 842  $ 39,826

Variable rate 82,816  —  —  —  82,816

Total consumer and other $ 112,470  $ 8,473  $ 857  $ 842  $ 122,642

Total per category

Fixed rate $ 9,258,886  $ 6,941,675  $ 2,597,659  $ 1,144,317  $ 19,942,537

Variable rate 30,922,958  787,992  2,417,805  —  34,128,755

Total loans, net of unearned income $ 40,181,844  $ 7,729,667  $ 5,015,464  $ 1,144,317  $ 54,071,292

Less: Existing cash flow hedging derivatives (1)

(5,900,000)

Total loans repricing or maturing in one year or less, adjusted for cash flow hedging activity $ 34,281,844

Variable Rate Loan Pricing by Index:

SOFR tenors (2)

$ 22,224,818

12- month CMT (3)

7,992,586

Prime 3,011,508

Fed Funds 625,005

Other U.S. Treasury tenors 175,047

Other 99,791

Total variable rate $ 34,128,755

(1)Excludes cash flow hedges with future effective starting dates and those that have matured as of March 31, 2026. The $5.90 billion of cash flow hedging derivatives includes receive fixed swaps, collars and floors of which $4.95 billion were impacting the cash flows of loans indexed to one-month SOFR as of March 31, 2026.

(2)SOFR - Secured Overnight Financing Rate.

(3)CMT - Constant Maturity Treasury Rate.

21

3/31/2025 4/30/2025 5/31/2025 6/30/2025 7/31/2025 8/31/2025 9/30/2025 10/31/2025 11/30/2025 12/31/2025 1/31/2026 2/28/2026 3/31/2026

1M SOFR 4.32 4.32 4.32 4.32 4.35 4.27 4.13 4.00 3.86 3.69 3.67 3.67 3.66

12M CMT 4.03 3.85 4.11 3.96 4.10 3.83 3.68 3.70 3.61 3.48 3.48 3.48 3.68

Prime 7.50 7.50 7.50 7.50 7.50 7.50 7.25 7.00 7.00 6.75 6.75 6.75 6.75

Source: Bloomberg

As noted in the table on the previous page, the majority of the Company’s portfolio is tied to SOFR and CMT indices which, as shown in the table above, do not mirror the same changes as the Prime rate, which has historically moved when the Federal Reserve raises or lowers interest rates. Specifically, the Company has variable rate loans of $19.5 billion tied to one-month SOFR and $8.0 billion tied to twelve-month CMT. The above chart shows:

Basis Point (bp) Change in

1-month

SOFR 12- month CMT Prime

First Quarter 2026 (3) bps 20 bps — bps

Fourth Quarter 2025 (44) (20) (50)

Third Quarter 2025 (19) (28) (25)

Second Quarter 2025 — (7) —

First Quarter 2025 (1) (13) —

22

TABLE 9: ALLOWANCE FOR CREDIT LOSSES

Three Months Ended

Mar 31, Dec 31, Sep 30, Jun 30, Mar 31,

(Dollars in thousands) 2026 2025 2025 2025 2025

Allowance for credit losses at beginning of period $ 460,465  $ 454,586  $ 457,461  $ 448,387  $ 437,060

Provision for credit losses - Other 29,594  27,588  21,768  22,234  23,963

Other adjustments (50) 71  (88) 180  4

Charge-offs:

Commercial 8,428  12,894  21,597  6,148  9,722

Commercial real estate 7,260  5,625  144  5,711  454

Home equity —  —  27  111  —

Residential real estate 350  —  26  —  —

Premium finance receivables - property & casualty 7,431  8,354  6,860  6,346  7,114

Premium finance receivables - life insurance —  —  18  —  12

Consumer and other 180  203  174  179  147

Total charge-offs 23,649  27,076  28,846  18,495  17,449

Recoveries:

Commercial 1,419  956  1,449  1,746  929

Commercial real estate 6  4  241  10  12

Home equity 303  28  104  30  216

Residential real estate 1  1  1  2  136

Premium finance receivables - property & casualty 3,437  4,275  2,459  3,335  3,487

Premium finance receivables - life insurance —  —  —  —  —

Consumer and other 65  32  37  32  29

Total recoveries 5,231  5,296  4,291  5,155  4,809

Net charge-offs (18,418) (21,780) (24,555) (13,340) (12,640)

Allowance for credit losses at period end $ 471,591  $ 460,465  $ 454,586  $ 457,461  $ 448,387

Annualized net charge-offs (recoveries) by category as a percentage of its own respective category’s average:

Commercial 0.17  % 0.29  % 0.49  % 0.11  % 0.23  %

Commercial real estate 0.21  0.16  (0.00) 0.17  0.01

Home equity (0.26) (0.02) (0.06) 0.07  (0.20)

Residential real estate 0.03  (0.00) 0.00  (0.00) (0.02)

Premium finance receivables - property & casualty 0.20  0.20  0.20  0.16  0.20

Premium finance receivables - life insurance —  —  0.00  —  0.00

Consumer and other 0.35  0.47  0.40  0.44  0.45

Total loans, net of unearned income 0.14  % 0.17  % 0.19  % 0.11  % 0.11  %

Loans at period end $ 54,071,292  $ 53,105,101  $ 52,063,482  $ 51,041,679  $ 48,708,390

Allowance for loan losses as a percentage of loans at period end 0.72  % 0.71  % 0.74  % 0.77  % 0.78  %

Allowance for loan and unfunded lending-related commitment losses as a percentage of loans at period end 0.87  0.87  0.87  0.90  0.92

PCD - Purchase Credit Deteriorated

23

TABLE 10: ALLOWANCE AND PROVISION FOR CREDIT LOSSES BY COMPONENT

Three Months Ended

Mar 31, Dec 31, Sep 30, Jun 30, Mar 31,

(In thousands) 2026 2025 2025 2025 2025

Provision for loan losses - Other $ 29,836  $ 14,369  $ 19,610  $ 26,607  $ 26,826

Provision for unfunded lending-related commitments losses - Other (239) 13,354  2,160  (4,325) (2,852)

Provision for held-to-maturity securities losses (3) (135) (2) (48) (11)

Provision for credit losses $ 29,594  $ 27,588  $ 21,768  $ 22,234  $ 23,963

Allowance for loan losses $ 390,651  $ 379,283  $ 386,622  $ 391,654  $ 378,207

Allowance for unfunded lending-related commitments losses 80,683  80,922  67,569  65,409  69,734

Allowance for loan losses and unfunded lending-related commitments losses 471,334  460,205  454,191  457,063  447,941

Allowance for held-to-maturity securities losses 257  260  395  398  446

Allowance for credit losses $ 471,591  $ 460,465  $ 454,586  $ 457,461  $ 448,387

PCD - Purchase Credit Deteriorated

TABLE 11: ALLOWANCE BY LOAN PORTFOLIO

The table below summarizes the calculation of allowance for loan losses and allowance for unfunded lending-related commitments losses for the Company’s loan portfolios as well as core and niche portfolios, as of March 31, 2026, December 31, 2025 and September 30, 2025.

As of Mar 31, 2026 As of Dec 31, 2025 As of Sep 30, 2025

(Dollars in thousands) Recorded

Investment Calculated

Allowance % of its

category’s balance Recorded

Investment Calculated

Allowance % of its

category’s balance Recorded

Investment Calculated

Allowance % of its

category’s balance

Commercial $ 17,763,221  $ 210,959  1.19  % $ 17,044,686  $ 178,545  1.05  % $ 16,544,342  $ 189,476  1.15  %

Commercial real estate:

Construction and development 2,323,942  74,092  3.19  2,409,582  93,106  3.86  2,658,153  78,765  2.96

Non-construction 11,838,344  150,778  1.27  11,531,154  153,827  1.33  10,961,054  151,712  1.38

Total commercial real estate $ 14,162,286  $ 224,870  1.59  % $ 13,940,736  $ 246,933  1.77  % $ 13,619,207  $ 230,477  1.69  %

Total commercial and commercial real estate $ 31,925,507  $ 435,829  1.37  % $ 30,985,422  $ 425,478  1.37  % $ 30,163,549  $ 419,953  1.39  %

Home equity 471,264  10,213  2.17  480,525  10,402  2.16  484,202  9,229  1.91

Residential real estate 4,465,166  13,081  0.29  4,317,232  12,519  0.29  4,143,870  12,013  0.29

Premium finance receivables - property & casualty 7,890,331  10,591  0.13  8,183,416  10,226  0.12  8,366,292  11,187  0.13

Premium finance receivables - life insurance 9,196,382  800  0.01  9,023,642  785  0.01  8,758,553  762  0.01

Consumer and other 122,642  820  0.67  114,864  795  0.69  147,016  1,047  0.71

Total loans, net of unearned income $ 54,071,292  $ 471,334  0.87  % $ 53,105,101  $ 460,205  0.87  % $ 52,063,482  $ 454,191  0.87  %

Total core loans (1)

$ 32,118,691  $ 408,892  1.27  % $ 31,309,210  $ 412,714  1.32  % $ 30,610,433  $ 408,780  1.34  %

Total niche loans (1)

21,952,601  62,442  0.28  21,795,891  47,491  0.22  21,453,049  45,411  0.21

(1)See Table 1 for additional detail on core and niche loans.

24

TABLE 12: LOAN PORTFOLIO AGING

(In thousands) Mar 31, 2026 Dec 31, 2025 Sep 30, 2025 Jun 30, 2025 Mar 31, 2025

Loan Balances:

Commercial

Nonaccrual $ 87,750  $ 78,059  $ 66,577  $ 80,877  $ 70,560

90+ days and still accruing —  —  —  —  46

60-89 days past due 9,996  22,952  12,190  34,855  15,243

30-59 days past due 90,389  90,205  36,136  45,103  97,397

Current 17,575,086  16,853,470  16,429,439  16,226,596  15,748,080

Total commercial $ 17,763,221  $ 17,044,686  $ 16,544,342  $ 16,387,431  $ 15,931,326

Commercial real estate

Nonaccrual $ 16,757  $ 25,147  $ 28,202  $ 32,828  $ 26,187

90+ days and still accruing —  —  —  —  —

60-89 days past due 17,133  19,529  14,119  11,257  6,995

30-59 days past due 54,143  65,601  83,055  51,173  83,653

Current 14,074,253  13,830,459  13,493,831  13,196,752  12,798,066

Total commercial real estate $ 14,162,286  $ 13,940,736  $ 13,619,207  $ 13,292,010  $ 12,914,901

Home equity

Nonaccrual $ 1,142  $ 1,221  $ 1,295  $ 1,780  $ 2,070

90+ days and still accruing —  —  —  —  —

60-89 days past due 463  1,112  246  138  984

30-59 days past due 2,012  2,818  2,294  2,971  3,403

Current 467,647  475,374  480,367  461,926  449,226

Total home equity $ 471,264  $ 480,525  $ 484,202  $ 466,815  $ 455,683

Residential real estate

Early buy-out loans guaranteed by U.S. government agencies (1)

$ 145,225  $ 145,793  $ 124,824  $ 134,067  $ 123,742

Nonaccrual 27,360  32,862  28,942  28,047  22,522

90+ days and still accruing —  —  —  —  —

60-89 days past due 129  7,562  8,829  8,954  1,351

30-59 days past due 30,854  24,908  95  38  38,943

Current 4,261,598  4,106,107  3,981,180  3,777,676  3,498,601

Total residential real estate $ 4,465,166  $ 4,317,232  $ 4,143,870  $ 3,948,782  $ 3,685,159

Premium finance receivables - property & casualty

Nonaccrual $ 33,891  $ 29,354  $ 24,512  $ 30,404  $ 29,846

90+ days and still accruing 15,823  19,115  13,006  14,350  18,081

60-89 days past due 16,188  29,294  23,527  25,641  19,717

30-59 days past due 47,936  57,685  38,133  29,460  39,459

Current 7,776,493  8,047,968  8,267,114  8,223,321  7,132,759

Total Premium finance receivables - property & casualty $ 7,890,331  $ 8,183,416  $ 8,366,292  $ 8,323,176  $ 7,239,862

Premium finance receivables - life insurance

Nonaccrual $ —  $ —  $ —  $ —  $ —

90+ days and still accruing —  —  —  327  2,962

60-89 days past due 22,690  13,887  34,016  11,202  10,587

30-59 days past due 58,760  22,806  34,506  34,403  29,924

Current 9,114,932  8,986,949  8,690,031  8,461,028  8,321,667

Total Premium finance receivables - life insurance $ 9,196,382  $ 9,023,642  $ 8,758,553  $ 8,506,960  $ 8,365,140

Consumer and other

Nonaccrual $ 16  $ 8  $ 38  $ 41  $ 18

90+ days and still accruing 10  42  60  184  98

60-89 days past due 130  466  49  61  162

30-59 days past due 230  643  159  175  542

Current 122,256  113,705  146,710  116,044  115,499

Total consumer and other $ 122,642  $ 114,864  $ 147,016  $ 116,505  $ 116,319

Total loans, net of unearned income

Early buy-out loans guaranteed by U.S. government agencies (1)

$ 145,225  $ 145,793  $ 124,824  $ 134,067  $ 123,742

Nonaccrual 166,916  166,651  149,566  173,977  151,203

90+ days and still accruing 15,833  19,157  13,066  14,861  21,187

60-89 days past due 66,729  94,802  92,976  92,108  55,039

30-59 days past due 284,324  264,666  194,378  163,323  293,321

Current 53,392,265  52,414,032  51,488,672  50,463,343  48,063,898

Total loans, net of unearned income $ 54,071,292  $ 53,105,101  $ 52,063,482  $ 51,041,679  $ 48,708,390

(1)Early buy-out loans are insured or guaranteed by the Federal Housing Administration or the U.S. Department of Veterans Affairs, subject to indemnifications and insurance limits for certain loans.

25

TABLE 13: NON-PERFORMING ASSETS (1)

Mar 31, Dec 31, Sep 30, Jun 30, Mar 31,

(Dollars in thousands) 2026 2025 2025 2025 2025

Loans past due greater than 90 days and still accruing:

Commercial $ —  $ —  $ —  $ —  $ 46

Commercial real estate —  —  —  —  —

Home equity —  —  —  —  —

Residential real estate —  —  —  —  —

Premium finance receivables - property & casualty 15,823  19,115  13,006  14,350  18,081

Premium finance receivables - life insurance —  —  —  327  2,962

Consumer and other 10  42  60  184  98

Total loans past due greater than 90 days and still accruing 15,833  19,157  13,066  14,861  21,187

Non-accrual loans:

Commercial 87,750  78,059  66,577  80,877  70,560

Commercial real estate 16,757  25,147  28,202  32,828  26,187

Home equity 1,142  1,221  1,295  1,780  2,070

Residential real estate 27,360  32,862  28,942  28,047  22,522

Premium finance receivables - property & casualty 33,891  29,354  24,512  30,404  29,846

Premium finance receivables - life insurance —  —  —  —  —

Consumer and other 16  8  38  41  18

Total non-accrual loans 166,916  166,651  149,566  173,977  151,203

Total non-performing loans:

Commercial 87,750  78,059  66,577  80,877  70,606

Commercial real estate 16,757  25,147  28,202  32,828  26,187

Home equity 1,142  1,221  1,295  1,780  2,070

Residential real estate 27,360  32,862  28,942  28,047  22,522

Premium finance receivables - property & casualty 49,714  48,469  37,518  44,754  47,927

Premium finance receivables - life insurance —  —  —  327  2,962

Consumer and other 26  50  98  225  116

Total non-performing loans $ 182,749  $ 185,808  $ 162,632  $ 188,838  $ 172,390

Other real estate owned 17,439  20,839  24,832  23,615  22,625

Total non-performing assets $ 200,188  $ 206,647  $ 187,464  $ 212,453  $ 195,015

Total non-performing loans by category as a percent of its own respective category’s period-end balance:

Commercial 0.49  % 0.46  % 0.40  % 0.49  % 0.44  %

Commercial real estate 0.12  0.18  0.21  0.25  0.20

Home equity 0.24  0.25  0.27  0.38  0.45

Residential real estate 0.61  0.76  0.70  0.71  0.61

Premium finance receivables - property & casualty 0.63  0.59  0.45  0.54  0.66

Premium finance receivables - life insurance —  —  —  0.00  0.04

Consumer and other 0.02  0.04  0.07  0.19  0.10

Total loans, net of unearned income 0.34  % 0.35  % 0.31  % 0.37  % 0.35  %

Total non-performing assets as a percentage of total assets 0.28  % 0.29  % 0.27  % 0.31  % 0.30  %

Allowance for loan losses and unfunded lending-related commitments losses as a percentage of non-accrual loans 282.38  % 276.15  % 303.67  % 262.71  % 296.25  %

(1)Excludes early buy-out loans guaranteed by U.S. government agencies. Early buy-out loans are insured or guaranteed by the Federal Housing Administration or the U.S. Department of Veterans Affairs, subject to indemnifications and insurance limits for certain loans.

26

Non-performing Loans Rollforward, excluding early buy-out loans guaranteed by U.S. government agencies

Three Months Ended

Mar 31, Dec 31, Sep 30, Jun 30, Mar 31,

(In thousands) 2026 2025 2025 2025 2025

Balance at beginning of period $ 185,808  $ 162,632  $ 188,838  $ 172,390  $ 170,823

Additions from becoming non-performing in the respective period 24,969  46,198  34,805  48,651  27,721

Return to performing status (3,663) (2,937) (3,399) (6,896) (1,207)

Payments received (13,780) (13,734) (28,052) (5,602) (15,965)

Transfer to OREO or other assets (868) (286) (348) (2,247) —

Charge-offs, net (10,930) (16,998) (21,526) (11,734) (8,600)

Net change for premium finance receivables 1,213  10,933  (7,686) (5,724) (382)

Balance at end of period $ 182,749  $ 185,808  $ 162,632  $ 188,838  $ 172,390

Other Real Estate Owned

Three Months Ended

Mar 31, Dec 31, Sep 30, Jun 30, Mar 31,

(In thousands) 2026 2025 2025 2025 2025

Balance at beginning of period $ 20,839  $ 24,832  $ 23,615  $ 22,625  $ 23,116

Disposals/resolved (4,760) (2,141) —  —  —

Transfers in at fair value, less costs to sell 1,360  —  1,217  1,315  —

Fair value adjustments —  (1,852) —  (325) (491)

Balance at end of period $ 17,439  $ 20,839  $ 24,832  $ 23,615  $ 22,625

Period End

(In thousands) Mar 31, Dec 31, Sep 30, Jun 30, Mar 31,

Balance by Property Type: 2026 2025 2025 2025 2025

Residential real estate $ —  $ —  $ —  $ —  $ —

Commercial real estate 17,439  20,839  24,832  23,615  22,625

Total $ 17,439  $ 20,839  $ 24,832  $ 23,615  $ 22,625

27

TABLE 14: NON-INTEREST INCOME

Three Months Ended

Q1 2026 compared to

Q4 2025

Q1 2026 compared to

Q1 2025

Mar 31, Dec 31, Sep 30, Jun 30, Mar 31,

(Dollars in thousands) 2026 2025 2025 2025 2025 $ Change % Change $ Change % Change

Brokerage $ 5,301  $ 5,384  $ 4,426  $ 4,212  $ 4,757  $ (83) (2) % $ 544  11  %

Trust and asset management 36,758  33,981  32,762  32,609  29,285  2,777  8  7,473  26

Total wealth management 42,059  39,365  37,188  36,821  34,042  2,694  7  8,017  24

Mortgage banking 23,396  22,625  24,451  23,170  20,529  771  3  2,867  14

Service charges on deposit accounts 20,970  20,402  19,825  19,502  19,362  568  3  1,608  8

(Losses) gains on investment securities, net (31) 1,505  2,972  650  3,196  (1,536) NM (3,227) NM

Fees from covered call options 4,669  5,992  5,619  5,624  3,446  (1,323) (22) 1,223  35

Trading gains (losses), net 10  (257) 172  151  (64) 267  NM 74  NM

Operating lease income, net 19,154  16,365  15,466  15,166  15,287  2,789  17  3,867  25

Other:

Interest rate swap fees 4,041  4,664  3,909  3,010  2,269  (623) (13) 1,772  78

BOLI 948  1,915  1,591  2,257  796  (967) (50) 152  19

Administrative services 1,243  1,352  1,240  1,315  1,393  (109) (8) (150) (11)

Foreign currency remeasurement (losses) gains (368) 322  (416) 658  (183) (690) NM (185) NM

Changes in fair value on EBOs and loans held-for-investment (287) (1,702) 1,452  172  383  1,415  83  (670) NM

Early pay-offs of capital leases 1,198  581  519  400  768  617  NM 430  56

Miscellaneous 17,140  17,261  16,839  15,193  15,410  (121) (1) 1,730  11

Total Other 23,915  24,393  25,134  23,005  20,836  (478) (2) 3,079  15

Total Non-Interest Income $ 134,142  $ 130,390  $ 130,827  $ 124,089  $ 116,634  $ 3,752  3  % $ 17,508  15  %

NM - Not meaningful.

BOLI - Bank-owned life insurance.

EBO - Early buy-out.

28

TABLE 15: MORTGAGE BANKING

Three Months Ended

(Dollars in thousands) Mar 31,

2026 Dec 31,

2025 Sep 30,

2025 Jun 30,

2025 Mar 31,

2025

Originations:

Retail originations $ 441,749  $ 589,139  $ 505,793  $ 523,759  $ 348,468

Veterans First originations 152,244  208,054  137,600  157,787  111,985

Total originations for sale (A) $ 593,993  $ 797,193  $ 643,393  $ 681,546  $ 460,453

Originations for investment 371,540  364,988  351,012  422,926  217,177

Total originations $ 965,533  $ 1,162,181  $ 994,405  $ 1,104,472  $ 677,630

As a percentage of originations for sale:

Retail originations 74  % 74  % 79  % 77  % 76  %

Veterans First originations 26  26  21  23  24

Purchases 52  % 52  % 77  % 74  % 77  %

Refinances 48  48  23  26  23

Production Margin:

Production revenue (B) (1)

$ 13,028  $ 10,878  $ 15,388  $ 13,380  $ 9,941

Total originations for sale (A) $ 593,993  $ 797,193  $ 643,393  $ 681,546  $ 460,453

Add: Current period end mandatory interest rate lock commitments to fund originations for sale (2)

218,156  122,804  307,932  163,664  197,297

Less: Prior period end mandatory interest rate lock commitments to fund originations for sale (2)

122,804  307,932  163,664  197,297  103,946

Total mortgage production volume (C) $ 689,345  $ 612,065  $ 787,661  $ 647,913  $ 553,804

Production margin (B / C) 1.89  % 1.78  % 1.95  % 2.07  % 1.80  %

Mortgage Servicing:

Loans serviced for others (D) $ 12,534,513 $ 12,608,694 $ 12,524,131 $ 12,470,924 $ 12,402,352

Mortgage Servicing Rights (“MSR”), at fair value (E) 195,276 195,023 190,938 193,061 196,307

Percentage of MSRs to loans serviced for others (E / D) 1.56  % 1.55  % 1.52  % 1.55  % 1.58  %

Servicing income $ 10,353  $ 10,185  $ 10,112  $ 10,520  $ 10,611

MSR Fair Value Asset Activity

MSR - FV at Beginning of Period $ 195,023  $ 190,938  $ 193,061  $ 196,307  $ 203,788

MSR - current period capitalization 6,434  9,150  5,829  6,336  4,669

MSR - collection of expected cash flows - paydowns (1,620) (1,550) (1,554) (1,516) (1,590)

MSR - collection of expected cash flows - payoffs and repurchases (5,021) (6,250) (4,050) (4,100) (3,046)

MSR - changes in fair value model assumptions 460  2,735  (2,348) (3,966) (7,514)

MSR Fair Value at end of period $ 195,276  $ 195,023  $ 190,938  $ 193,061  $ 196,307

Summary of Mortgage Banking Revenue:

Operational:

Production revenue (1)

$ 13,028  $ 10,878  $ 15,388  $ 13,380  $ 9,941

MSR - Current period capitalization 6,434  9,150  5,829  6,336  4,669

MSR - Collection of expected cash flows - paydowns (1,620) (1,550) (1,554) (1,516) (1,590)

MSR - Collection of expected cash flows - payoffs and repurchases (5,021) (6,250) (4,050) (4,100) (3,046)

Servicing Income 10,353  10,185  10,112  10,520  10,611

Other Revenue (45) (17) (345) (79) (172)

Total operational mortgage banking revenue $ 23,129  $ 22,396  $ 25,380  $ 24,541  $ 20,413

Fair Value:

MSR - changes in fair value model assumptions $ 460  $ 2,735  $ (2,348) $ (3,966) $ (7,514)

(Loss) gain on derivative contract held as an economic hedge, net (900) (2,425) 265  2,535  4,897

Changes in FV on early buy-out loans guaranteed by US Govt held-for-sale 707  (81) 1,154  60  2,733

Total fair value mortgage banking revenue $ 267  $ 229  $ (929) $ (1,371) $ 116

Total mortgage banking revenue $ 23,396  $ 22,625  $ 24,451  $ 23,170  $ 20,529

(1)Production revenue represents revenue earned from the origination and subsequent sale of mortgages, including gains on loans sold and fees from originations, changes in other related financial instruments carried at fair value, processing and other related activities, and excludes servicing fees, changes in the fair value of servicing rights and changes to the mortgage recourse obligation and other non-production revenue.

(2)Certain volume adjusted for the estimated pull-through rate of the loan, which represents the Company’s best estimate of the likelihood that a committed loan will ultimately fund.

29

TABLE 16: NON-INTEREST EXPENSE

Three Months Ended

Q1 2026 compared to

Q4 2025

Q1 2026 compared to

Q1 2025

Mar 31, Dec 31, Sep 30, Jun 30, Mar 31,

(Dollars in thousands) 2026 2025 2025 2025 2025 $ Change % Change $ Change % Change

Salaries and employee benefits:

Salaries $ 129,086  $ 124,856  $ 124,623  $ 123,174  $ 123,917  $ 4,230  3  % $ 5,169  4  %

Commissions and incentive compensation 57,407  57,117  56,244  55,871  52,536  290  1  4,871  9

Benefits 41,954  40,584  38,801  40,496  35,073  1,370  3  6,881  20

Total salaries and employee benefits 228,447  222,557  219,668  219,541  211,526  5,890  3  16,921  8

Software and equipment 35,654  36,096  35,027  36,522  34,717  (442) (1) 937  3

Operating lease equipment 10,987  11,034  10,409  10,757  10,471  (47) (0) 516  5

Occupancy, net 20,566  20,105  20,809  20,228  20,778  461  2  (212) (1)

Data processing 11,266  11,809  11,329  12,110  11,274  (543) (5) (8) (0)

Advertising and marketing 13,218  13,792  19,027  18,761  12,272  (574) (4) 946  8

Professional fees 7,375  8,280  7,465  9,243  9,044  (905) (11) (1,669) (18)

Amortization of other acquisition-related intangible assets 4,958  4,999  5,196  5,580  5,618  (41) (1) (660) (12)

FDIC insurance 10,990  11,061  11,418  10,971  10,926  (71) (1) 64  1

FDIC insurance - special assessment —  (499) —  —  —  499  (100) —  —

OREO expense, net 207  2,162  262  505  643  (1,955) (90) (436) (68)

Other:

Lending expenses, net of deferred origination costs 6,510  6,367  6,169  4,869  5,866  143  2  644  11

Travel and entertainment 5,426  7,965  6,029  6,026  5,270  (2,539) (32) 156  3

Miscellaneous 27,028  28,725  27,220  26,348  27,685  (1,697) (6) (657) (2)

Total other 38,964  43,057  39,418  37,243  38,821  (4,093) (10) 143  0

Total Non-Interest Expense $ 382,632  $ 384,453  $ 380,028  $ 381,461  $ 366,090  $ (1,821) (0) % $ 16,542  5  %

NM - Not meaningful.

30

TABLE 17: SUPPLEMENTAL NON-GAAP FINANCIAL MEASURES/RATIOS

The accounting and reporting policies of Wintrust conform to generally accepted accounting principles (“GAAP”) in the United States and prevailing practices in the banking industry. However, certain non-GAAP performance measures and ratios are used by management to evaluate and measure the Company’s performance. These include taxable-equivalent net interest income (including its individual components), taxable-equivalent net interest margin (including its individual components), the taxable-equivalent efficiency ratio, tangible common equity ratio, tangible book value per common share, return on average tangible common equity, and pre-tax income, excluding provision for credit losses. Management believes that these measures and ratios provide users of the Company’s financial information a more meaningful view of the performance of the Company’s interest-earning assets and interest-bearing liabilities and of the Company’s operating efficiency. Other financial holding companies may define or calculate these measures and ratios differently.

Management reviews yields on certain asset categories and the net interest margin of the Company and its banking subsidiaries on a fully taxable-equivalent basis (“FTE”). In this non-GAAP presentation, net interest income is adjusted to reflect tax-exempt interest income on an equivalent before-tax basis using tax rates effective as of the end of the period. This measure ensures comparability of net interest income arising from both taxable and tax-exempt sources. Net interest income on a FTE basis is also used in the calculation of the Company’s efficiency ratio. The efficiency ratio, which is calculated by dividing non-interest expense by total taxable-equivalent net revenue (less securities gains or losses), measures how much it costs to produce one dollar of revenue. Securities gains or losses are excluded from this calculation to better match revenue from daily operations to operational expenses. Management considers the tangible common equity ratio and tangible book value per common share as useful measurements of the Company’s equity. The Company references the return on average tangible common equity as a measurement of profitability. Management considers pre-tax income, excluding provision for credit losses, as a useful measurement of the Company’s core net income.

Three Months Ended

Mar 31, Dec 31, Sep 30, Jun 30, Mar 31,

(Dollars and shares in thousands) 2026 2025 2025 2025 2025

Reconciliation of Non-GAAP Net Interest Margin and Efficiency Ratio:

(A) Interest Income (GAAP) $ 927,560  $ 956,326  $ 963,834  $ 920,908  $ 886,965

Taxable-equivalent adjustment:

- Loans

2,026  2,134  2,154  2,200  2,206

- Liquidity Management Assets 586  661  675  680  690

- Other Earning Assets —  —  —  —  3

(B) Interest Income (non-GAAP) $ 930,172  $ 959,121  $ 966,663  $ 923,788  $ 889,864

(C) Interest Expense (GAAP) 348,536  372,452  396,824  374,214  360,491

(D) Net Interest Income (GAAP) (A minus C) 579,024  583,874  567,010  546,694  526,474

(E) Net Interest Income (non-GAAP) (B minus C) 581,636  586,669  569,839  549,574  529,373

Net interest margin (GAAP) 3.54  % 3.52  % 3.48  % 3.52  % 3.54  %

Net interest margin, fully taxable-equivalent (non-GAAP) 3.56  3.54  3.50  3.54  3.56

(F) Non-interest income $ 134,142  $ 130,390  $ 130,827  $ 124,089  $ 116,634

(G) (Losses) gains on investment securities, net (31) 1,505  2,972  650  3,196

(H) Non-interest expense 382,632  384,453  380,028  381,461  366,090

Efficiency ratio (H/(D+F-G)) 53.65  % 53.94  % 54.69  % 56.92  % 57.21  %

Efficiency ratio (non-GAAP) (H/(E+F-G)) 53.45  53.73  54.47  56.68  56.95

31

Three Months Ended

Mar 31, Dec 31, Sep 30, Jun 30, Mar 31,

(Dollars and shares in thousands) 2026 2025 2025 2025 2025

Reconciliation of Non-GAAP Tangible Common Equity Ratio:

Total shareholders’ equity (GAAP) $ 7,378,100 $ 7,258,715 $ 7,045,757 $ 7,225,696 $ 6,600,537

Less: Non-convertible preferred stock (GAAP) (425,000) (425,000) (425,000) (837,500) (412,500)

Less: Acquisition-related intangible assets (GAAP) (890,698) (895,959) (902,936) (908,639) (913,004)

(I) Total tangible common shareholders’ equity (non-GAAP) $ 6,062,402 $ 5,937,756 $ 5,717,821 $ 5,479,557 $ 5,275,033

(J) Total assets (GAAP) $ 72,157,433 $ 71,142,046 $ 69,629,638 $ 68,983,318 $ 65,870,066

Less: Acquisition-related intangible assets (GAAP) (890,698) (895,959) (902,936) (908,639) (913,004)

(K) Total tangible assets (non-GAAP) $ 71,266,735 $ 70,246,087 $ 68,726,702 $ 68,074,679 $ 64,957,062

Common equity to assets ratio (GAAP) (L/J) 9.6  % 9.6  % 9.5  % 9.3  % 9.4  %

Tangible common equity ratio (non-GAAP) (I/K) 8.5  8.5  8.3  8.0  8.1

Reconciliation of Non-GAAP Tangible Book Value per Common Share:

Total shareholders’ equity $ 7,378,100  $ 7,258,715  $ 7,045,757  $ 7,225,696  $ 6,600,537

Less: Non-convertible preferred stock (GAAP) (425,000) (425,000) (425,000) (837,500) (412,500)

(L) Total common equity $ 6,953,100  $ 6,833,715  $ 6,620,757  $ 6,388,196  $ 6,188,037

(M) Actual common shares outstanding 67,437  66,975  66,961  66,938  66,919

Book value per common share (L/M) $ 103.10  $ 102.03  $ 98.87  $ 95.43  $ 92.47

Tangible book value per common share (non-GAAP) (I/M) 89.90  88.66  85.39  81.86  78.83

Reconciliation of Non-GAAP Return on Average Tangible Common Equity:

(N) Net income applicable to common shares $ 219,021  $ 214,657  $ 188,913  $ 188,536  $ 182,048

Add: Acquisition-related intangible asset amortization 4,958  4,999  5,196  5,580  5,618

Less: Tax effect of acquisition-related intangible asset amortization (1,210) (1,310) (1,403) (1,495) (1,421)

After-tax Acquisition-related intangible asset amortization $ 3,748  $ 3,689  $ 3,793  $ 4,085  $ 4,197

(O) Tangible net income applicable to common shares (non-GAAP) $ 222,769  $ 218,346  $ 192,706  $ 192,621  $ 186,245

Total average shareholders’ equity $ 7,387,713  $ 7,166,608  $ 6,955,543  $ 6,862,040  $ 6,460,941

Less: Average preferred stock (425,000) (425,000) (483,288) (599,313) (412,500)

(P) Total average common shareholders’ equity $ 6,962,713  $ 6,741,608  $ 6,472,255  $ 6,262,727  $ 6,048,441

Less: Average acquisition-related intangible assets (894,211) (901,022) (906,032) (910,924) (916,069)

(Q) Total average tangible common shareholders’ equity (non-GAAP) $ 6,068,502  $ 5,840,586  $ 5,566,223  $ 5,351,803  $ 5,132,372

Return on average common equity, annualized (N/P) 12.76  % 12.63  % 11.58  % 12.07  % 12.21  %

Return on average tangible common equity, annualized (non-GAAP) (O/Q) 14.89  14.83  13.74  14.44  14.72

Reconciliation of Non-GAAP Pre-Tax, Pre-Provision Income:

Income before taxes $ 300,940  $ 302,223  $ 296,041  $ 267,088  $ 253,055

Add: Provision for credit losses 29,594  27,588  21,768  22,234  23,963

Pre-tax income, excluding provision for credit losses (non-GAAP) $ 330,534  $ 329,811  $ 317,809  $ 289,322  $ 277,018

32

Three Months Ended

Mar 31, Dec 31, Sep 30, Jun 30, Mar 31,

(Dollars and shares in thousands, except per share data) 2026 2025 2025 2025 2025

Reconciliation of Non-GAAP Net Income per Common Share:

Net income $ 227,388  $ 223,024  $ 216,254  $ 195,527  $ 189,039

Preferred stock dividends 8,367  8,367  13,295  6,991  6,991

Preferred stock redemption —  —  14,046  —  —

(R) Net income applicable to common shares $ 219,021  $ 214,657  $ 188,913  $ 188,536  $ 182,048

(S) Weighted average common shares outstanding 67,246  66,970  66,952  66,931  66,726

Dilutive potential common shares 851  1,143  1,028  888  923

(T) Average common shares and dilutive common shares 68,097  68,113  67,980  67,819  67,649

Net income per common share - Basic (R/S) $ 3.26  $ 3.21  $ 2.82  $ 2.82  $ 2.73

Net income per common share - Diluted (R/T) $ 3.22  $ 3.15  $ 2.78  $ 2.78  $ 2.69

Preferred stock series F excess one-time extended first dividend $ —  $ —  $ 4,927  $ —  $ —

Preferred stock redemption —  —  14,046  —  —

(U) Total non-recurring preferred stock offering impact (non-GAAP) $ —  $ —  $ 18,973  $ —  $ —

Net income per common share - Basic (non-GAAP) (R+U)/S $ 3.26  $ 3.21  $ 3.11  $ 2.82  $ 2.73

Net income per common share - Diluted (non-GAAP) (R+U)/T $ 3.22  $ 3.15  $ 3.06  $ 2.78  $ 2.69

33

WINTRUST SUBSIDIARIES

Wintrust is a financial holding company whose common stock is traded on the Nasdaq Global Select Market (Nasdaq: WTFC) that operates bank retail locations in the greater Chicago, southern Wisconsin, west Michigan, northwest Indiana, and southwest Florida market areas. Its 16 community bank subsidiaries are: Barrington Bank & Trust Company, N.A., Beverly Bank & Trust Company, N.A., Crystal Lake Bank & Trust Company, N.A., Hinsdale Bank & Trust Company, N.A., Lake Forest Bank & Trust Company, N.A., Libertyville Bank & Trust Company, N.A., Macatawa Bank, N.A., Northbrook Bank & Trust Company, N.A., Old Plank Trail Community Bank, N.A., Schaumburg Bank & Trust Company, N.A., St. Charles Bank & Trust Company, N.A., State Bank of The Lakes, N.A., Town Bank, N.A., Village Bank & Trust, N.A., Wheaton Bank & Trust Company, N.A., and Wintrust Bank, N.A.

Additionally, the Company operates various non-bank businesses:

•FIRST Insurance Funding and Wintrust Life Finance, each a division of Lake Forest Bank & Trust Company, N.A., serve property and casualty and life insurance loan customers, respectively, throughout the United States.

•First Insurance Funding of Canada serves property and casualty insurance loan customers throughout Canada.

•Tricom, Inc. of Milwaukee provides high-yielding, short-term accounts receivable financing and value-added out-sourced administrative services, such as data processing of payrolls, billing and cash management services, to temporary staffing service clients located throughout the United States.

•Wintrust Mortgage, a division of Barrington Bank & Trust Company, N.A., engages primarily in the origination and purchase of residential mortgages for sale into the secondary market through origination offices located throughout the United States.

•Wintrust Investments, LLC provides a full range of private client and brokerage services to clients and correspondent banks located primarily in the Midwest.

•Great Lakes Advisors LLC provides money management services and advisory services to individual accounts.

•Wintrust Private Trust Company, N.A., a trust subsidiary, allows Wintrust to service customers’ trust and investment needs at each banking location.

•Wintrust Asset Finance offers direct leasing opportunities.

•CDEC provides Qualified Intermediary services (as defined by U.S. Treasury regulations) for taxpayers seeking to structure tax-deferred like-kind exchanges under Internal Revenue Code Section 1031.

FORWARD-LOOKING STATEMENTS

This document contains forward-looking statements within the meaning of federal securities laws. Forward-looking information can be identified through the use of words such as “intend,” “plan,” “project,” “expect,” “anticipate,” “believe,” “estimate,” “contemplate,” “possible,” “will,” “may,” “should,” “would” and “could.” Forward-looking statements and information are not historical facts, are premised on many factors and assumptions, and represent only management’s expectations, estimates and projections regarding future events. Similarly, these statements are not guarantees of future performance and involve certain risks and uncertainties that are difficult to predict, and which may include, but are not limited to, those listed below and the Risk Factors discussed under Item 1A of the Company’s 2025 Annual Report on Form 10-K and in any of the Company’s subsequent SEC filings. The Company intends such forward-looking statements to be covered by the safe harbor provisions for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995, and is including this statement for purposes of invoking these safe harbor provisions. Such forward-looking statements may be deemed to include, among other things, statements relating to the Company’s future financial performance, the performance of its loan portfolio, the expected amount of future credit reserves and charge-offs, delinquency trends, growth plans, regulatory developments, securities that the Company may offer from time to time, and management’s long-term performance goals, as well as statements relating to the anticipated effects on the Company’s financial condition and results of operations from expected developments or events, the Company’s business and growth strategies, including future acquisitions of banks, specialty finance or wealth management businesses, internal growth and plans to form additional de novo banks or branch offices. Actual results could differ materially from those addressed in the forward-looking statements as a result of numerous factors, including the following:

•economic conditions and events that affect the economy, housing prices, the job market and other factors that may adversely affect the Company’s liquidity and the performance of its loan portfolios, including an actual or threatened U.S. government shutdown, debt default or rating downgrade, particularly in the markets in which it operates;

•negative effects suffered by us or our customers resulting from changes in U.S. or international trade policies;

•the extent of defaults and losses on the Company’s loan portfolio, which may require further increases in its allowance for credit losses;

•estimates of fair value of certain of the Company’s assets and liabilities, which could change in value significantly from period to period;

•the financial success and economic viability of the borrowers of our commercial loans;

34

•commercial real estate market conditions in the Chicago metropolitan area, southern Wisconsin and west Michigan;

•the extent of commercial and consumer delinquencies and declines in real estate values, which may require further increases in the Company’s allowance for credit losses;

•inaccurate assumptions in our analytical and forecasting models used to manage our loan portfolio;

•changes in the level and volatility of interest rates, the capital markets and other market indices that may affect, among other things, the Company’s liquidity and the value of its assets and liabilities;

•the interest rate environment, including a prolonged period of low interest rates or rising interest rates, either broadly or for some types of instruments, which may affect the Company’s net interest income and net interest margin, and which could materially adversely affect the Company’s profitability;

•competitive pressures in the financial services business which may affect the pricing of the Company’s loan and deposit products as well as its services (including wealth management services), which may result in loss of market share and reduced income from deposits, loans, advisory fees and income from other products;

•failure to identify and complete favorable acquisitions in the future or unexpected losses, difficulties or developments related to the Company’s recent or future acquisitions;

•unexpected difficulties and losses related to FDIC-assisted acquisitions;

•harm to the Company’s reputation;

•any negative perception of the Company’s financial strength;

•ability of the Company to raise additional capital on acceptable terms when needed;

•disruption in capital markets, which may lower fair values for the Company’s investment portfolio;

•ability of the Company to use technology to provide products and services that will satisfy customer demands and create efficiencies in operations and to manage risks associated therewith;

•failure or breaches of our security systems or infrastructure, or those of third parties;

•security breaches, including denial of service attacks, hacking, social engineering attacks, malware intrusion and similar events or data corruption attempts and identity theft;

•adverse effects on our information technology systems, or those of third parties, resulting from failures, human error or cyberattacks (including ransomware);

•adverse effects of failures by our vendors to provide agreed upon services in the manner and at the cost agreed, particularly our information technology vendors;

•increased costs as a result of protecting our customers from the impact of stolen debit card information;

•accuracy and completeness of information the Company receives about customers and counterparties to make credit decisions;

•ability of the Company to attract and retain senior management experienced in the banking and financial services industries;

•environmental liability risk associated with lending activities;

•the impact of any claims or legal actions to which the Company is subject, including any effect on our reputation;

•losses incurred in connection with repurchases and indemnification payments related to mortgages and increases in reserves associated therewith;

•the loss of customers as a result of technological changes allowing consumers to complete their financial transactions without the use of a bank;

•the soundness of other financial institutions and the impact of recent failures of financial institutions, including broader financial institution liquidity risk and concerns;

•the expenses and delayed returns inherent in opening new branches and de novo banks;

•liabilities, potential customer loss or reputational harm related to closings of existing branches;

•examinations and challenges by tax authorities, and any unanticipated impact of tax legislation;

•changes in accounting standards, rules and interpretations, and the impact on the Company’s financial statements;

•the ability of the Company to receive dividends from its subsidiaries;

•a decrease in the Company’s capital ratios, including as a result of declines in the value of its loan portfolios, or otherwise;

•legislative or regulatory changes, particularly changes in regulation of financial services companies and/or the products and services offered by financial services companies;

•changes in laws, regulations, rules, standards and contractual obligations regarding data privacy and cybersecurity;

•a lowering of our credit rating;

•changes in U.S. monetary policy and changes to the Federal Reserve’s balance sheet, including changes in response to persistent inflation or otherwise;

•regulatory restrictions upon our ability to market our products to consumers and limitations on our ability to profitably operate our mortgage business;

•increased costs of compliance, heightened regulatory capital requirements and other risks associated with changes in regulation and the regulatory environment;

•the impact of heightened capital requirements;

•increases in the Company’s FDIC insurance premiums, or the collection of special assessments by the FDIC;

35

•delinquencies or fraud with respect to the Company’s premium finance business;

•credit downgrades among commercial and life insurance providers that could negatively affect the value of collateral securing the Company’s premium finance loans;

•the Company’s ability to comply with covenants under its credit facility;

•fluctuations in the stock market, which may have an adverse impact on the Company’s wealth management business and brokerage operation; and

•widespread outages of operational, communication, or other systems, whether internal or provided by third parties, natural or other disasters (including acts of terrorism, armed hostilities and pandemics), and the effects of climate change.

Therefore, there can be no assurances that future actual results will correspond to these forward-looking statements. The reader is cautioned not to place undue reliance on any forward-looking statement made by the Company. Any such statement speaks only as of the date the statement was made or as of such date that may be referenced within the statement. The Company undertakes no obligation to update any forward-looking statement to reflect the impact of circumstances or events after the date of the press release. Persons are advised, however, to consult further disclosures management makes on related subjects in its reports filed with the Securities and Exchange Commission and in its press releases.

CONFERENCE CALL, WEBCAST AND REPLAY

The Company will hold a conference call on Tuesday, April 21, 2026 at 10:00 a.m. (CDT) regarding first quarter 2026 earnings results. Individuals interested in participating in the call by addressing questions to management should register for the call to receive the dial-in numbers and unique PIN at the Conference Call Link included within the Company’s press release dated March 18, 2026 available at the Investor Relations, Investor News and Events, Press Releases link on its website at https://www.wintrust.com. A separate simultaneous audio-only webcast link is included within the press release referenced above. Registration for and a replay of the audio-only webcast with an accompanying slide presentation will be available at https://www.wintrust.com, Investor Relations, Investor News and Events, Presentations & Conference Calls. The text of the first quarter 2026 earnings press release will also be available on the home page of the Company’s website at https://www.wintrust.com and at the Investor Relations, Investor News and Events, Press Releases link on its website.

36

EX-99.2

EX-99.2

Filename: earningsrelease2026-q1pr.htm · Sequence: 3

earningsrelease2026-q1pr

Earnings Release Presentation Q1 2026

ORGANIZATION NAME 2 Forward Looking Statements This document contains forward-looking statements within the meaning of federal securities laws. Forward-looking information can be identified through the use of words such as “intend,” “plan,” “project,” “expect,” “anticipate,” “believe,” “estimate,” “contemplate,” “possible,” “will,” “may,” “should,” “would” and “could.” Forward-looking statements and information are not historical facts, are premised on many factors and assumptions, and represent only management’s expectations, estimates and projections regarding future events. Similarly, these statements are not guarantees of future performance and involve certain risks and uncertainties that are difficult to predict, and which may include, but are not limited to, those listed below and the Risk Factors discussed under Item 1A of the Company’s 2025 Annual Report on Form 10-K and in any of the Company’s subsequent SEC filings. The Company intends such forward- looking statements to be covered by the safe harbor provisions for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995, and is including this statement for purposes of invoking these safe harbor provisions. Such forward-looking statements may be deemed to include, among other things, statements relating to the Company’s future financial performance, the performance of its loan portfolio, the expected amount of future credit reserves and charge-offs, delinquency trends, growth plans, regulatory developments, securities that the Company may offer from time to time,the Company’s business and growth strategies, including future acquisitions of banks, specialty finance or wealth management businesses, internal growth and plans to form additional de novo banks or branch offices, and management’s long-term performance goals, as well as statements relating to the anticipated effects on the Company's financial condition and results of operations from expected developments or events. Actual results could differ materially from those addressed in the forward-looking statements as a result of numerous factors, including the following: • economic conditions and events that affect the economy, housing prices, the job market and other factors that may adversely affect the Company’s liquidity and the performance of its loan portfolios, including an actual or threatened U.S. government shutdown, debt default or rating downgrade, particularly in the markets in which it operates; • negative effects suffered by us or our customers resulting from changes in U.S. or international trade policies; • the extent of defaults and losses on the Company’s loan portfolio, which may require further increases in its allowance for credit losses; • estimates of fair value of certain of the Company’s assets and liabilities, which could change in value significantly from period to period; • the financial success and economic viability of the borrowers of our commercial loans; • commercial real estate market conditions in the Chicago metropolitan area and southern Wisconsin; • the extent of commercial and consumer delinquencies and declines in real estate values, which may require further increases in the Company’s allowance for credit losses; • inaccurate assumptions in our analytical and forecasting models used to manage our loan portfolio; • changes in the level and volatility of interest rates, the capital markets and other market indices that may affect, among other things, the Company’s liquidity and the value of its assets and liabilities; • the interest rate environment, including a prolonged period of low interest rates or rising interest rates, either broadly or for some types of instruments, which may affect the Company’s net interest income and net interest margin, and which could materially adversely affect the Company’s profitability; • competitive pressures in the financial services business which may affect the pricing of the Company’s loan and deposit products as well as its services (including wealth management services), which may result in loss of market share and reduced income from deposits, loans, advisory fees and income from other products; • failure to identify and complete favorable acquisitions in the future or unexpected losses, difficulties or developments related to the Company’s recent or future acquisitions; • unexpected difficulties and losses related to FDIC-assisted acquisitions; • harm to the Company’s reputation; • any negative perception of the Company’s financial strength; • ability of the Company to raise additional capital on acceptable terms when needed; • disruption in capital markets, which may lower fair values for the Company’s investment portfolio; • ability of the Company to use technology to provide products and services that will satisfy customer demands and create efficiencies in operations and to manage risks associated therewith; • failure or breaches of our security systems or infrastructure, or those of third parties; • security breaches, including denial of service attacks, hacking, social engineering attacks, malware intrusion and similar events or data corruption attempts and identity theft; • adverse effects on our information technology systems, or those of third parties, resulting from failures, human error or cyberattacks (including ransomware);

ORGANIZATION NAME 3 Forward Looking Statements • adverse effects of failures by our vendors to provide agreed upon services in the manner and at the cost agreed, particularly our information technology vendors; • increased costs as a result of protecting our customers from the impact of stolen debit card information; • accuracy and completeness of information the Company receives about customers and counterparties to make credit decisions; • ability of the Company to attract and retain senior management experienced in the banking and financial services industries; • environmental liability risk associated with lending activities; • the impact of any claims or legal actions to which the Company is subject, including any effect on our reputation; • losses incurred in connection with repurchases and indemnification payments related to mortgages and increases in reserves associated therewith; • the loss of customers as a result of technological changes allowing consumers to complete their financial transactions without the use of a bank; • the soundness of other financial institutions and the impact of recent failures of financial institutions, including broader financial institution liquidity risk and concerns; • the expenses and delayed returns inherent in opening new branches and de novo banks; • liabilities, potential customer loss or reputational harm related to closings of existing branches; • examinations and challenges by tax authorities, and any unanticipated impact of tax legislation; • changes in accounting standards, rules and interpretations, and the impact on the Company’s financial statements; • the ability of the Company to receive dividends from its subsidiaries; • the impact of the Company's transition from LIBOR to an alternative benchmark rate for current and future transactions; • a decrease in the Company’s capital ratios, including as a result of declines in the value of its loan portfolios, or otherwise; • legislative or regulatory changes, particularly changes in regulation of financial services companies and/or the products and services offered by financial services companies; • changes in laws, regulations, rules, standards and contractual obligations regarding data privacy and cybersecurity; • a lowering of our credit rating; • changes in U.S. monetary policy and changes to the Federal Reserve’s balance sheet, including changes in response to persistent inflation or otherwise; • regulatory restrictions upon our ability to market our products to consumers and limitations on our ability to profitably operate our mortgage business; • increased costs of compliance, heightened regulatory capital requirements and other risks associated with changes in regulation and the regulatory environment; • the impact of heightened capital requirements; • increases in the Company’s FDIC insurance premiums, or the collection of special assessments by the FDIC; • delinquencies or fraud with respect to the Company’s premium finance business; • credit downgrades among commercial and life insurance providers that could negatively affect the value of collateral securing the Company’s premium finance loans; • the Company’s ability to comply with covenants under its credit facility; • fluctuations in the stock market, which may have an adverse impact on the Company’s wealth management business and brokerage operation; and • widespread outages of operational, communication, or other systems, whether internal or provided by third parties, natural or other disasters (including acts of terrorism, armed hostilities and pandemics), and the effects of climate change could have an adverse effect on the Company’s financial condition and results of operations, lead to material disruption of the Company’s operations or the ability or willingness of clients to access the Company’s products and services. Therefore, there can be no assurances that future actual results will correspond to these forward-looking statements. The reader is cautioned not to place undue reliance on any forward-looking statement made by the Company. Any such statement speaks only as of the date the statement was made or as of such date that may be referenced within the statement. The Company undertakes no obligation to update any forward-looking statement to reflect the impact of circumstances or events after the date of the press release and this presentation. Persons are advised, however, to consult further disclosures management makes on related subjects in its reports filed with the Securities and Exchange Commission and in its press releases and presentations.

ORGANIZATION NAME 4 Q1 2026 Highlights (Comparative to Q4 2025) • Record quarterly net income of $227.4 million • Q1 2026 net interest margin (non-GAAP) of 3.56% was two basis points better than the prior quarter and within our expected range • Total loans increased by approximately $1.0 billion, or 7% annualized, and was driven by growth across most loan categories • Total deposits increased by approximately $1.2 billion, or 8% annualized, and was driven by our diversified product offerings Pre-Tax, Pre-Provision1 Diversified Balance Sheet Total DepositsTotal Assets Total Loans Net Income $72.2 billion +$1.0 billion $54.1 billion +$1.0 billion $58.9 billion +$1.2 billion $227.4 million +$4.4 million Strong Credit Quality • Non-performing loans totaled $182.7 million and comprised 0.34% of total loans at March 31, 2026 • Allowance for credit losses on total core loans was 1.27% at March 31, 2026 • Net charge-offs of 14 basis points in the first quarter of 2026 Efficiency RatioReturn on Assets ROE / ROTCE 1.32% +5 bp (GAAP) 53.65% -29 bps $330.5 million +$0.7 million Diluted EPS $3.22 +$0.07 Stable Margin Supports Earnings (non-GAAP) 53.45% -28 bps (GAAP) 12.76% +13 bps (non-GAAP) 14.89% +6 bps 1 Pre-tax income, excluding provision for credit losses (non-GAAP) – See non-GAAP reconciliation in the Appendix

ORGANIZATION NAME 5 $189.0 $223.0 $227.4 1.20% 1.27% 1.32% Net Income ROA Q1 2025 Q4 2025 Q1 2026 Diluted EPS Quarterly Trend Record Quarterly Net Income $2.69 $3.15 $3.22 Diluted EPS Q1 2025 Q4 2025 Q1 2026 $277.0 $329.8 $330.5 Pre-Tax Income, excluding Provision for Credit Losses (non-GAAP) Q1 2025 Q4 2025 Q1 2026 ($ in Millions) Q1 2026 Highlights Earnings Summary Differentiated, highly diversified and sustainable business model • Record quarterly net income of $227.4 million supported by strong loan and deposit growth and a stable net interest margin • Q1 2026 pre-tax income, excluding provision for credit losses (non- GAAP) totaled $330.5 million as compared to $329.8 million in the fourth quarter of 2025, a record for the Company Record Quarterly Pre-Tax Income, Excluding Provision for Credit Losses ($ in Millions)

ORGANIZATION NAME 6 • Loan growth during the first quarter totaled $1.0 billion, or 7% on an annualized basis • Loan growth was broad based across all major categories, except PFR - Property and Casualty Insurance • Year-over-year loan growth of $5.4 billion, or 11%, driven by robust organic growth 33% 26% 15% 17% 8% 1% Commercial Commercial Real Estate PFR - Property and Casualty Insurance PFR - Life Insurance Residential Real Estate All Other Loans $53,105 $719 $222 $148 $(293) $173 $(3) $54,071 12/31/2025 Commercial Commercial Real Estate Residential Real Estate PFR - Property and Casualty Insurance PFR - Life Insurance All Other Loans 3/31/2026 $48.7 $53.1 $54.1 6.53% 6.27% 6.14% Total Loans Average Total Loan Yield 3/31/2025 12/31/2025 3/31/2026 Loan Growth Across Most Major Loan Categories ($ in Millions) Diversified Loan Mix (as of 3/31/2026) Robust Organic Loan Growth in the First Quarter ($ in Billions) Loan Portfolio Diversified loan portfolio drives consistent growth Highlights

ORGANIZATION NAME 7 $53.6 $57.7 $58.9 3.16% 2.90% 2.74% Total Deposits Rate Paid on Average Total Interest-Bearing Deposits 3/31/2025 12/31/2025 3/31/2026 $57,717 $689 $345 $609 $(246) $(200) $58,914 12/31/2025 Non- Interest- Bearing Money Market CDs NOW Other Interest- Bearing 3/31/2026 Deposit Portfolio Enviable core deposit franchise in Chicago, Milwaukee and Grand Rapids market areas Strong Deposit Growth in the First Quarter • First quarter deposit growth totaling $1.2 billion or 8% annualized • Year-over-year deposit growth of $5.3 billion, or 10%, was supported by strong organic growth and market share gains in our key markets • Growth across a wide range of deposit products highlights our strong deposits franchise Highlights ($ in Millions) ($ in Billions) Diversified Growth in Deposits 1 Includes: Savings and deposit balances of the Company’s subsidiary banks from brokerage customers of Wintrust Investments, Chicago Deferred Exchange Company, LLC, trust and asset management customers of the Company 1 Deposit Beta Chart Pending 5.00% 4.50% 4.25% 3.75%3.72% 3.39% 3.15% 2.90% 2.93% 2.68% 2.54% 2.33% Fed Funds Upper Target Interest-Bearing Deposit Rate Total Deposit Rate 9/30/2024 12/31/2024 9/30/2025 12/31/2025 5.50% 5.00% 4.50% 4.50% 4.50% 4.25% 3.75% 3.75%3.73% 3.72% 3.39% 3.16% 3.14% 3.15% 2.90% 2.74% 2.93% 2.94% 2.68% 2.51% 2.51% 2.54% 2.33% 2.21% Ending Fed Funds Rate Upper Bound Average Interest-Bearing Deposit Rate Average Total Deposit Rate 6/30/2024 9/30/2024 12/31/2024 3/31/2025 6/30/2025 9/30/2025 12/31/2025 3/31/2026 Deposit Betas Interest-Bearing Deposit Beta: 57% Total Deposit Beta: 41% Strategically Repriced Deposits Throughout the Fed Easing Cycle

ORGANIZATION NAME 8 $7.2 $3.3 $0.1 Available-for-Sale Held-to-Maturity Other Year-over-Year Growth in CET1Robust Capital Levels Strategically Balanced Investment Portfolio (as of 3/31/2026) ($ in Billions) Capital/Liquidity Capital levels are well in excess of regulatory thresholds 10.1% 10.3% 10.4% 3/31/2025 12/31/2025 3/31/2026 10.1% 10.3% 10.4% 10.8% 11.0% 11.1% 12.5% 12.4% 12.5% 9.6% 9.6% 9.8% CET1 Ratio Tier 1 Capital Ratio Total Capital Ratio Tier 1 Leverage Ratio 3/31/2025 12/31/2025 3/31/2026 Total Investment Portfolio Yield (Q1 '26): 3.85% Duration: 5.7 Years $10.6 Highlights 1 Ratios for Q1 2026 are estimated 1 1 • The Company's capital levels are well in excess of regulatory thresholds and improving despite strong loan growth • Investment portfolio at 15% of total assets as of March 31, 2026

ORGANIZATION NAME 9 $4.11 $5.50 $6.03 $6.19 $7.08 $9.03 $11.65 $14.84 $16.07 $17.28 $18.97 $19.02 $20.78 $23.22 $25.80 $26.72 $29.28 $29.93 $32.45 $33.17 $37.08 $41.68 $44.67 $49.70 $53.23 $59.64 $61.00 $70.33 $75.39 $88.66 $89.90 Tangible Book Value Per Common Share (non-GAAP) 19 96 19 97 19 98 19 99 20 00 20 01 20 02 20 03 20 04 20 05 20 06 20 07 20 08 20 09 20 10 20 11 20 12 20 13 20 14 20 15 20 16 20 17 20 18 20 19 20 20 20 21 20 22 20 23 20 24 20 25 3/ 31/ 20 26 Tangible Book Value Per Common Share (non-GAAP) Wintrust has grown TBV Per Common Share every year since going public in 1996, and increased TBV Per Common Share to $89.90 as of March 31, 2026

ORGANIZATION NAME 10 Total Shareholder Return Wintrust's commitment to growing shareholder value is exemplified by consistently outperforming the KBW Nasdaq Regional Banking Total Return Index (KRXTR) Total Shareholder Return of WTFC Compared to KRXTR (1-Year) 100% 125% 116% WTFC KRXTR 03/ 31/ 25 03/ 31/ 26 80% 100% 120% 140% Total Shareholder Return of WTFC Compared to KRXTR (3-Year) 100% 145% 159% 198% 114% 130% 150% WTFC KRXTR 03/ 31/ 23 03/ 31/ 24 03/ 31/ 25 03/ 31/ 26 50% 100% 150% 200% 250% Total Shareholder Return of WTFC Compared to KRXTR (5-Year) 100% 124% 100% 143% 156% 194% 103% 80% 92% 104% 121% WTFC KRXTR 03/ 31/ 21 03/ 31/ 22 03/ 31/ 23 03/ 31/ 24 03/ 31/ 25 03/ 31/ 26 0% 50% 100% 150% 200% 250% 300% Total Shareholder Return of WTFC Compared to KRXTR (10-Year) 100% 157% 196% 156% 80% 180% 221% 179% 254% 276% 340% 141% 151% 134% 90% 185% 145% 165% 188% 217% WTFC KRXTR 03/ 31/ 16 03/ 31/ 17 03/ 31/ 18 03/ 31/ 19 03/ 31/ 20 03/ 31/ 21 03/ 31/ 22 03/ 31/ 23 03/ 31/ 24 03/ 31/ 25 03/ 31/ 26 50% 100% 150% 200% 250% 300% 350% * Data Source: S&P Capital IQ

ORGANIZATION NAME 11 As of March 31, 2026 • Collars Weighted Average Cap Rate: 3.70% • Collars Weighted Average Floor Rate: 2.21% • Receive Fixed Swaps Weighted Average Rate: 3.83% • Interest Rate Floor Weighted Average Strike Rate: 2.50% $5.90 $6.15 $5.90 $5.10 $3.70 $3.95 $3.70 $3.40 $1.75 $1.75 $1.75 $1.25 $0.45 $0.45 $0.45 $0.45 Received Fixed Swaps Costless Collars Interest Rate Floor 3/31/2026 6/30/2026 9/30/2026 12/31/2026 $526.5 $583.9 $579.0 3.56% 3.54% 3.56% Net Interest Income NIM, fully taxable-equivalent (non-GAAP) 3/31/2025 12/31/2025 3/31/2026 Net Interest Margin/Income Stable net interest margin, within projected range; coupled with earning asset growth supported strong net interest income levels Strong Q1 2026 NII Despite Two Fewer Calendar Days Derivatives Held by the Company as of March 31, 2026 that Hedge the Cash Flows of Variable Rate Loans1 ($ in Billions) ($ in Millions) Highlights 1 Balances shown represent the notional amount of cash flow hedging derivatives that are effective as of the dates presented. Reference the Appendix slide 23 for the complete derivative schedule As of December 31, 2025 Collars Weighted Average Cap Rate: 3.70% Collars Weighted Average Floor Rate: 2.21% Receive Fixed Swaps Weighted Average Rate: 3.82% Interest Rate Floor Weighted Average Strike Rate: 2.50% • We are well-positioned for strong financial performance as we expect the combination of a stable net interest margin and balance sheet growth to result in strong net interest income growth through 2026 • Hedging activities help manage our interest rate risk. We anticipate that the repricing of variable rate loans and cash is substantially offset by the impact of hedges and deposit rate changes • We are well-positioned for strong financial performance as we expect the combination of a stable net interest margin and balance sheet growth to result in strong net interest income growth through 2026 • Hedging activities help manage our interest rate risk. We anticipate that the repricing of variable rate loans and cash is substantially offset by the impact of hedges and deposit rate changes

ORGANIZATION NAME 12 $34.0 $39.4 $42.1 $42.7 $46.5 $45.9 Total Wealth Management Revenue Client Assets Under Administration ($ in billions) Q1 2025 Q4 2025 Q1 2026 Non-Interest Income Diversified fee businesses supported growth in non-interest income levels despite challenging mortgage environment Consistent Wealth Management Revenue Growth $116.6 $130.4 $134.1 $34.0 $39.4 $42.1 $15.3 $16.4 $19.2 $19.4 $20.4 $21.0 $27.4 $31.6 $28.4 $20.5 $22.6 $23.4 Wealth Management Operating Lease Income, net Service Charges on Deposits Other ; incl. Call Option Income Mortgage Banking Q1 2025 Q4 2025 Q1 2026 $460.5 $797.2 $594.0 $348.5 $589.1 $441.7 $112.0 $208.1 $152.3 Retail Originations Veterans First Originations Q1 2025 Q4 2025 Q1 2026 Mortgage Originations For Sale Reflect Current Market Conditions MSRs Effectively Hedged to Moderate Impact to Fair Value Non-Interest Income Increased Year-over-Year Across All Major Categories 1 ($ in Millions) ($ in Millions) % of MSRs to Loans Serviced for Others Q1 2025 Q4 2025 Q1 2026 1.58% 1.55% 1.56% $196.3 $195.0 $195.3 $12,402 $12,609 $12,535 MSRs, at fair value Loans Serviced for Others Q1 2025 Q4 2025 Q1 2026 ($ in Millions) ($ in Millions) 1 Other - includes Interest Rate Swap Fees, BOLI, Administrative Services, FX Remeasurement Gains/(Losses), Early Pay-Offs of Capital Leases, Gains/(losses) on investment securities, net, Fees from covered call options, Trading gains/(losses), net and Miscellaneous Pending

ORGANIZATION NAME 13 • Non-interest expense totaled $382.6 million in the first quarter of 2026, decreasing $1.9 million, compared to $384.5 million in the fourth quarter of 2025 • The decrease was primarily due to lower travel and entertainment expenses, along with decreased advertising and marketing, reflecting typical first-quarter seasonality Non-Interest Expense We continue to manage our expenses in line with company growth Increase Driven by Base Salaries as Annual Merit Increases Go Into Effect in the First Quarter Efficiency Ratio Improved as Revenue Growth Outpaced Expense Growth Strong Asset Growth Coupled With Prudent Expense Management $211.5 $222.6 $228.5 $123.9 $124.9 $129.1 $52.5 $57.1 $57.4 $35.1 $40.6 $42.0 Salaries Commissions and Incentive Compensation Benefits Q1 2025 Q4 2025 Q1 2026 56.95% 53.73% 53.45% Efficiency Ratio (non-GAAP) Q1 2025 Q4 2025 Q1 2026 $45.1 $50.1 $52.9 $56.3 $64.9 $71.1 $72.2 2.51% 2.42% 2.33% 2.45% 2.36% 2.26% 2.21% Total Assets Non-Interest Expense as a % of Average Assets FY 2020 FY 2021 FY 2022 FY 2023 FY 2024 FY 2025 3/31/2026 ($ in Millions) ($ in Billions) Highlights • The Non-interest expense totaled $382.6 million in the first quarter of 2026, decreasing $1.9 million, compared to $384.5 million in the fourth quarter of 2025 • The decrease was attributable to lower travel and entertainment expenses, reflecting typical first-quarter seasonality, as well as lower OREO losses

ORGANIZATION NAME 14 $460.5 $27.0 $(15.9) $471.6 12/31/2025 Portfolio Changes Macroeconomic Factors 3/31/2026 $12.6 $21.8 $18.4 $24.0 $27.6 $29.6 0.11% 0.17% 0.14% NCOs Provision for Credit Losses Annualized NCOs as a % of Average Total Loans Q1 2025 Q4 2025 Q1 2026 $172.4 $185.8 $182.7 $121.5 $137.3 $133.0 $50.9 $48.5 $49.7 0.35% 0.35% 0.34% NPLs as a % of Total Loans PFR - Life and Commercial NPLs Commercial, CRE and Other NPLs 3/31/2025 12/31/2025 3/31/2026 $51,727 $52,479 Q4 2025 Q1 2026 $787 $959 Q4 2025 Q1 2026 $591 $633 Q4 2025 Q1 2026 Pass and Loans Guaranteed1 Special Mention Substandard2 1 Pass and Loans Guaranteed: Includes early buy-out loans guaranteed by U.S. government agencies 2 Substandard: Substandard includes Substandard Accrual and Substandard Nonaccrual/Doubtful 97% 97% 2% 2% 1% 1% Credit Quality Diversified business lines and strong credit management support stable credit quality Low and Consistent Levels of Non-Performing Loans ($ in Millions) ($ in Millions) Special Mention and Substandard Percentages Remained Unchanged Quarter over Quarter ($ in Millions) Allowance For Credit Losses Quarter over Quarter ($ in Millions) 3 Portfolio Changes: Includes new volume and run-off, changes in credit quality, aging of existing portfolio, shifts in segmentation mix and changes in net charge-offs 3 Provision Remained Relatively Stable

ORGANIZATION NAME 15 0.25% 0.40% 0.45% 0.41% 0.46% 0.48% 0.34% 0.51% 0.29% 0.34% 0.39% 0.81% 1.58% 1.74% 1.52% 1.30% 1.03% 0.85% 0.62% 0.56% 0.50% 0.47% 0.44% 0.36% 0.32% 0.16% 0.21% 0.27% 0.30% 0.29% 0.28% NPA/TA 19 96 19 97 19 98 19 99 20 00 20 01 20 02 20 03 20 04 20 05 20 06 20 07 20 08 20 09 20 10 20 11 20 12 20 13 20 14 20 15 20 16 20 17 20 18 20 19 20 20 20 21 20 22 20 23 20 24 20 25 3/ 31/ 20 26 1Q2 2024 is a Preliminary Number Non-Performing Assets to Total Assets NPAs continue to remain historically low

ORGANIZATION NAME 16 $48.7 $53.1 $54.1 0.92% 0.87% 0.87% Total Loan Period End Balance Allowance as a % of Total Loans 3/31/2025 12/31/2025 3/31/2026 $29.1 $31.3 $32.1 1.37% 1.32% 1.27% Core Loan Period End Balance Allowance as a % of Category 3/31/2025 12/31/2025 3/31/2026 $19.6 $21.8 $22.0 0.26% 0.22% 0.28% Niche Loan Period End Balance Allowance as a % of Category 3/31/2025 12/31/2025 3/31/2026 Credit Quality - Allowance for Credit Losses The Company remains well-reserved Consistently Well-Reserved Across Our Core1 Loan PortfolioAppropriate Allowance Coverage on Total Loan Portfolio ($ in Billions) ($ in Billions) Allowance Provides Proper Coverage due to Minimal Historic Losses in Niche1 Portfolio ($ in Billions) 1 Niche Loans consists of: Franchise, Mortgage warehouse lines of credit, Community Advantage - homeowners association, Insurance agency lending, Premium Finance receivables, and Consumer and other. All other loans are considered Core 1 1 Manual Input - All Data comes from Mike Reiser Q1 2026 Highlights • Increase in allowance for credit losses driven by portfolio changes, primarily from impact of new volume and minimal changes in credit quality • Coverage across all portfolios remains stable to protect against downside risks in an uncertain macroeconomic environment

ORGANIZATION NAME 17 $201.2 $178.5 $211.0 1.26% 1.05% 1.19% Calculated Allowance Allowance as a % of Category 3/31/2025 12/31/2025 3/31/2026 $70.6 $78.1 $87.8 0.44% 0.46% 0.49% NPLs NPL as a % of Category 3/31/2025 12/31/2025 3/31/2026 $15,931 $17,045 $17,763 0.23% 0.29% 0.17% Period End Balance Net Charge-Off Ratio (Annualized) 3/31/2025 12/31/2025 3/31/2026 43% 9% 5% 17% 7% 10% 3% 6% Commercial and industrial Asset-based lending Municipal Leases Franchise Mortgage warehouse lines of credit Community Advantage - HOA Insurance agency lending Credit Quality - Commercial Loans Diversified portfolio with low net charge-offs Low Levels of Non-Performing Commercial LoansStrong Loan Growth Coupled with Proactive Credit Management ($ in Millions) ($ in Millions) Allowance Provides Appropriate Coverage Commercial Loan Composition (as of 3/31/2026) ($ in Millions)

ORGANIZATION NAME 18 $210.0 $246.9 $224.9 1.63% 1.77% 1.59% Calculated Allowance Allowance as a % of Category 3/31/2025 12/31/2025 3/31/2026 $12,915 $13,941 $14,162 0.01% 0.16% 0.21% Period End Balance Net Charge-Off Ratio (Annualized) 3/31/2025 12/31/2025 3/31/2026 $26.2 $25.1 $16.8 0.20% 0.18% 0.12% NPLs NPL as a % of Category 3/31/2025 12/31/2025 3/31/2026 25% 24% 14% 13% 12% 10% 2% Multi-family Industrial Commercial and Residential construction Mixed use and other Office Retail Land Credit Quality - Commercial Real Estate Loans Well-diversified portfolio with a majority of its exposure in stabilized, income producing properties Continued Low Levels of NPLs in Q1 2026 Strong Growth in Portfolio with Modest Levels of Net Charge-offs ($ in Millions) ($ in Millions) Commercial Real Estate Loan Composition (as of 3/31/2026) ($ in Millions) Allowance Continues to Provide Strong Coverage

ORGANIZATION NAME 19 $3.0 $0.0 $0.0 0.04% 0.00% 0.00% NPLs NPL as a % of Category 3/31/2025 12/31/2025 3/31/2026 $9,037 $2,133 Cash Surrender Value Other $8,365 $9,024 $9,196 0.00% 0.00% 0.00% Period End Balance Net Charge-Off Ratio (Annualized) 3/31/2025 12/31/2025 3/31/2026 1 Loan Collateral reported at actual values versus credit advance rate 2 Collateral Coverage is calculated by dividing Total Loan Collateral (Undiscounted) by Total Loan Portfolio Balance 5% 72% 6% 17% Annuity Brokerage Account Certificate of Deposit Letters of Credit OtherCollateral Coverage2 of 121% Credit Quality Premium Finance Receivables - Life Insurance Life insurance portfolio remains steady and has continued to demonstrate exceptional credit quality Non-Performing Loans Remain LowStrong Growth with Pristine Credit Quality ($ in Millions) ($ in Millions) Total Loan Collateral1 by Type (as of 3/31/2026) "Other" Loan Collateral1 by Type (as of 3/31/2026) ($ in Millions) Credit Quality Premium Finance Receivable - Life Insurance Life insurance portfolio remains steady and has continued to demonstrate exceptional credit quality and no charge-offs

ORGANIZATION NAME 20 Low, Consistent Level of Non-Performing LoansSlight Seasonal Decline in Q1 2026 $7,240 $8,183 $7,890 0.20% 0.20% 0.20% Period End Balance Net Charge-Off Ratio (Annualized) 3/31/2025 12/31/2025 3/31/2026 $4,392 $4,822 $4,710 Originations Q1 2025 Q4 2025 Q1 2026 $47.9 $48.5 $49.7 0.66% 0.59% 0.63% NPLs NPL as a % of Category 3/31/2025 12/31/2025 3/31/2026 $3,861 $2,540 $1,205 $284 Current Premium Finance Receivables - Property and Casualty Insurance Loan Balances Projected to Mature Based on Modeled Contractual Cash Flows ≤ 3 Months 4-6 Months 7-9 Months > 9 months Premium Finance Receivables - Property and Casualty Insurance Steady year-over-year growth in portfolio with solid credit quality ($ in Millions) ($ in Millions) Projected Repayments Increased Origination Volume Compared to Prior Year ($ in Millions) ($ in Millions) Manual Input - Data comes from Mark B Manual Input - Data comes from Thanos Polyzois and Matt for Canada

ORGANIZATION NAME 21 Mortgage Credit, 57% Business Credit, 14% Private Equity Funds, 11% Other NDFI Loans, 18% • Warehouse lines of credit primarily to large well-capitalized residential mortgage originators • Secured primarily by first mortgages with committed investors • XXXX • XXX Non-Depository Financial Institutions (NDFI) Lending (as of 3/31/2026) NDFI lending represents a conservative 6% of the total loan portfolio in low risk sectors NDFI Loan Portfolio Breakdown ($ in Millions) $341 $445 $572 $1,801 Highlights $3,159 Mortgage Credit • NDFI Loans represent approximately 6% of the total loan portfolio as of March 31, 2026. • The majority of the portfolio consists of Mortgage Credit loans which are warehouse lines of credit secured primarily by first mortgages. Q1 2026 Takeaways Business Credit Private Equity Funds Other NDFI Loans • Comprises mainly loans to well established leasing companies • Loans to private credit lenders limited to less than $50mm • No exposure to Business Development Companies (BDCs) • Subscription lines to private equity, private credit, and CRE investment funds • Short term loans repaid by investor contributions from institutional funds, pension funds, insurance companies, and high net worth individuals • Consists of diverse pool of financial service entities including broker dealers, RIAs, insurance companies, and captive finance companies associated with commercial borrowers 1 NDFI balance is an estimate pending the filing of Wintrust Financial Corporation's FRY-9C. 1

ORGANIZATION NAME Appendix

ORGANIZATION NAME 23 Hedging activities had a one basis point favorable impact to our Q1 2026 NIM as compared to a two basis point unfavorable impact to our Q4 2025 NIM. These derivatives moderate our interest rate sensitivity and serve the purpose of stabilizing net interest income performance across various interest rate scenarios. Hedge Type Effective Date Notional Maturity Date Cap Rate Floor Rate Swap Rate Costless Collar 10/1/2022 $0.50B 10/1/2026 4.32% 2.75% N/A Costless Collar 9/1/2022 $1.25B 9/1/2027 3.45% 2.00% N/A Costless Collar Total $1.75B Interest Rate Floor 9/15/2025 $0.20B 9/15/2028 N/A 2.50% N/A Interest Rate Floor 12/1/2025 $0.25B 12/1/2029 N/A 2.50% N/A Interest Rate Floor Total $0.45B Receive Fixed Swap 4/1/2023 $0.25B 7/1/2026 N/A N/A 4.45% Receive Fixed Swap 1/31/2023 $0.50B 12/31/2026 N/A N/A 3.51% Receive Fixed Swap 2/1/2023 $0.25B 2/1/2027 N/A N/A 3.45% Receive Fixed Swap 4/1/2023 $0.25B 7/1/2027 N/A N/A 4.15% Receive Fixed Swap 3/1/2023 $0.25B 3/1/2028 N/A N/A 3.53% Receive Fixed Swap 3/1/2023 $0.25B 3/1/2028 N/A N/A 3.75% Receive Fixed Swap 10/1/2024 $0.35B 10/1/2029 N/A N/A 3.99% Receive Fixed Swap 11/1/2024 $0.35B 11/1/2029 N/A N/A 4.25% Receive Fixed Swap 11/1/2025 $0.25B 11/1/2029 N/A N/A 3.30% Receive Fixed Swap 11/1/2025 $0.25B 11/1/2030 N/A N/A 3.55% Receive Fixed Swap 11/1/2025 $0.25B 11/1/2030 N/A N/A 3.82% Receive Fixed Swap 2/1/2026 $0.25B 2/1/2031 N/A N/A 3.95% Receive Fixed Swap 2/1/2026 $0.25B 2/1/2031 N/A N/A 4.25% Receive Fixed Swap 4/1/2026 $0.25B 4/1/2031 N/A N/A 3.69% Receive Fixed Swap 10/1/2026 $0.20B 10/1/2031 N/A N/A 3.38% Receive Fixed Swap 3/1/2027 $0.25B 3/1/2032 N/A N/A 3.43% Receive Fixed Swap 3/1/2027 $0.20B 3/1/2032 N/A N/A 3.60% Received Fixed Swap Total $4.60B Below are the details of the derivatives entered by the Company as of March 31, 2026. These derivatives hedge the cash flows of variable rate loans that reprice monthly based on one-month term SOFR. Hedge Strategy Update Use of Hedges to Stabilize NIM and Mitigate Potential Negative Impacts of Falling Rates

ORGANIZATION NAME 24 $377.7 $276.0 $311.8 $268.0 $268.4 $150.5$136.0 $150.3 $189.4 $149.8 $149.2 $45.6 Total CRE Office Non-Medical Non Owner-Occupied <$2M $2M-$5M $5M-$10M $10M-$15M $15M-$20M >=$20M Chicago CBD, 9% Other CBD, 9% Suburban, 82% CRE Office Portfolio Geography CRE Office Portfolio (as of 3/31/2026) CRE office represents a minimal percentage of the total loan portfolio Medical Non Owner- Occupied, 33% Medical Owner Occupied, 2% Non-Medical Owner- Occupied, 15% Non-Medical Non Owner- Occupied, 50% 1Chicago CBD includes the following zip codes: 60601, 60602, 60603, 60604, 60605, 60606, 60607, 60610, 60611, 60654, 60661 2Other CBD includes the following metropolitan areas: Milwaukee, Boulder, Orlando, Saint Paul, Columbus, Cincinnati, San Antonio 1 2 $1,348.9 $155.4 $148.1 $820.3 $246.8 $548.8 267897 87 49 43 25 21 12 9 5 Number of Loans Per Category ($ in Millions) CRE Office Portfolio Composition Granularity of CRE Office Portfolio by Loan Size ($ in Millions) ($ in Millions) Portfolio Characteristics As of 12/31/2025 As of 3/31/2026 Balance ($ in Millions) $1,689 $1,652 CRE office as a % to Total CRE 12.11% 11.67% CRE office as a % to Total Loans 3.18% 3.06% Average Size of Loan ($ in Millions) $1.6 $1.5 Non-Performing Loan (NPL) Ratio 0.81% 0.62% Loans Still Accruing that are 30-89 Days Past Due Ratio 0.39% 0.19% Owner Occupied or Medical % 50% 50% $36.5 Manual Input - Data Comes from Mario's Team Chicago CBD $ 158.8 Other CBD $ 168.9 Suburban $ 1,360.9 Total $ 1,688.6 2 16 Considering Removing This Slide and Adding to Earnings Playbook for Exec Reference

251Geographic Diversification: primary business location utilized to estimate geographic diversification, which can mean the following locations types were used: collateral location, customer business location, customer home address and customer billing address States/Jurisdictions that individually comprise 1% or less of the Total Loan Portfolio shaded light blue Loan Portfolio Highly diversified portfolio across U.S Loan Portfolio - Geographic Diversification1 (as of 3/31/2026) 31% 9% 7% 6% 4% 4% 3% 3% 2% 2% 3% 2%Canada: Total Loan Portfolio Primary Geographic Region Commercial: Commercial, industrial and other Midwest Leasing Nationwide Franchise Lending Nationwide Commercial real estate Construction and development Midwest Non-construction Midwest Home equity Midwest Residential Real Estate Midwest Premium finance receivables Commercial insurance loans Nationwide and Canada Life insurance loans Nationwide Consumer and other Midwest 5% 2% 2% New Image Pending

ORGANIZATION NAME 26 Illinois Market1 (Sorted by 2025 Market Share Data) 2023 2024 2025 JPMorgan Chase 22.5% 20.1% 20.1% BMO Bank 17.1% 18.9% 18.3% Wintrust Financial Corporation 7.6% 8.0% 8.6% Bank of America 9.2% 8.3% 7.9% CIBC Bank USA 6.8% 7.3% 7.7% The Northern Trust Company 4.9% 6.0% 6.4% Fifth Third Bank 4.8% 4.8% 4.3% PNC Bank 3.1% 3.2% 3.3% Old National Bank 2.5% 2.5% 2.8% U.S. Bank 2.7% 2.5% 2.5% Deposit Market Share in the Markets We Serve Wintrust serves over 300,000 consumer banking households and 50,000 commercial middle market and small business clients Wisconsin Market3 (Sorted by 2025 Market Share Data) 2023 2024 2025 U.S. Bank 27.5% 24.0% 25.2% BMO Harris Bank 13.8% 14.7% 13.1% Associated Bank 9.3% 9.9% 10.0% JPMorgan Chase 10.1% 9.7% 9.6% Johnson Bank 3.9% 4.0% 4.1% Wintrust Financial Corporation 2.9% 3.4% 3.5% First Business Bank 2.0% 2.4% 2.7% Old National Bank 2.0% 2.3% 2.4% Lake Ridge Bank 1.9% 2.2% 2.2% Wells Fargo 2.3% 2.3% 2.0% Michigan Market2 (Sorted by 2025 Market Share Data) 2023 2024 2025 Huntington 19.6% 19.5% 18.3% Fifth Third Bank 19.5% 19.6% 17.2% Northpointe Bank 10.4% 11.1% 14.2% Wintrust Financial Corporation 8.0% 7.8% 9.3% JPMorgan Chase 10.2% 9.9% 9.0% Mercantile Bank 6.1% 6.3% 6.7% PNC Bank 3.8% 3.1% 3.0% West Michigan Community Bank 2.7% 2.9% 2.9% Independent Bank 3.2% 3.0% 2.9% ChoiceOne Bank 2.6% 2.6% 2.7% 1Illinois market is defined by Cook, DuPage, Kane, Lake, McHenry, Will and Winnebago counties 2Michigan market is defined by Allegan, Kent, and Ottawa counties Wintrust Midwest Branch Locations 4 3Wisconsin market is defined by Dane, Kenosha, Milwaukee, Ozaukee, Racine, Rock, Walworth and Waukesha counties 4Indiana market is defined by Lake county; Wintrust market share approx. 1.43% Data Source: Federal Deposit Insurance Corporation as of June 30th of each year

ORGANIZATION NAME 27 Glossary Abbreviation Definition AUA Assets Under Administration BOLI Bank Owned Life Insurance BP Basis Point BV Book Value per Common Share CBD Central Business District CET1 Ratio Common Equity Tier 1 Capital Ratio CRE Commercial Real Estate Diluted EPS Net Income per Common Share - Diluted FDIC Federal Deposit Insurance Corporation GAAP Generally Accepted Accounting Principles HOA Homeowners Association Interest Bearing Cash Total Interest-Bearing Deposits with Banks, Securities Purchased under Resale Agreements and Cash Equivalents MSA Metropolitan Statistical Area MSR Mortgage Servicing Right NCO Net Charge Off NDFI Non-Depository Financial Institutions NII Net Interest Income NIM Net Interest Margin Non-GAAP For non-GAAP metrics, see the reconciliation in the Appendix NPA Non-Performing Asset NPL Non-Performing Loan OREO Other Real Estate Owned PFR Premium Finance Receivables PTPP Pre-Tax, Pre-Provision Income RBA Retirement Benefits Advisors RIA Registered Investment Adviser ROA Return on Assets ROE Return on Average Common Equity ROTCE Return on Average Tangible Common Equity RWA Risk-Weighted Asset SOFR Secured Overnight Financing Rate TA Total Assets TBV Tangible Book Value TBVPCS Tangible Book Value Per Common Share

ORGANIZATION NAME 28 Three Months Ended Reconciliation of non-GAAP Net Interest Margin and Efficiency Ratio ($ in Thousands): March 31, December 31, September 30, June 30, March 31, 2026 2025 2025 2025 2025 (A) Interest Income (GAAP) $ 927,560 $ 956,326 $ 963,834 $ 920,908 $ 886,965 Taxable-equivalent adjustment: - Loans 2,026 2,134 2,154 2,200 2,206 - Liquidity Management Assets 586 661 675 680 690 - Other Earning Assets — — — — 3 (B) Interest Income (non-GAAP) $ 930,172 $ 959,121 $ 966,663 $ 923,788 $ 889,864 (C) Interest Expense (GAAP) 348,536 372,452 396,824 374,214 360,491 (D) Net Interest Income (GAAP) (A minus C) 579,024 583,874 567,010 546,694 526,474 (E) Net Interest Income (non-GAAP) (B minus C) 581,636 586,669 569,839 549,574 529,373 Net interest margin (GAAP) 3.54 % 3.52 % 3.48 % 3.52 % 3.54 % Net interest margin, fully taxable-equivalent (non-GAAP) 3.56 % 3.54 % 3.50 % 3.54 % 3.56 % (F) Non-interest income $ 134,142 $ 130,390 $ 130,827 $ 124,089 $ 116,634 (G) (Losses) gains on investment securities, net (31) 1,505 2,972 650 3,196 (H) Non-interest expense 382,632 384,453 380,028 381,461 366,090 Efficiency ratio (H/(D+F-G)) 53.65 % 53.94 % 54.69 % 56.92 % 57.21 % Efficiency ratio (non-GAAP) (H/(E+F-G)) 53.45 % 53.73 % 54.47 % 56.68 % 56.95 % The accounting and reporting policies of Wintrust conform to generally accepted accounting principles (“GAAP”) in the United States and prevailing practices in the banking industry. However, certain non-GAAP performance measures and ratios are used by management to evaluate and measure the Company’s performance. Management believes that these measures and ratios provide users of the Company’s financial information a more meaningful view of the performance of the Company's interest-earning assets and interest-bearing liabilities and of the Company’s operating efficiency. Other financial holding companies may define or calculate these measures and ratios differently. Reconciliation of non-GAAP Pre-Tax, Pre-Provision Income ($ in Thousands): Income before taxes $ 300,940 $ 302,223 $ 296,041 $ 267,088 $ 253,055 Add: Provision for credit losses 29,594 27,588 21,768 22,234 23,963 Pre-tax income, excluding provision for credit losses (non- GAAP) $ 330,534 $ 329,811 $ 317,809 $ 289,322 $ 277,018 Non-GAAP Reconciliation

ORGANIZATION NAME 29 Non-GAAP Reconciliation Three Months Ended Reconciliation of non-GAAP Return on Average Tangible Common Equity ($ in Thousands): March 31, December 31, September 30, June 30, March 31, 2026 2025 2025 2025 2025 (N) Net income applicable to common shares $ 219,021 $ 214,657 $ 188,913 $ 188,536 $ 182,048 Add: Intangible asset amortization 4,958 4,999 5,196 5,580 5,618 Less: Tax effect of intangible asset amortization (1,210) (1,310) (1,403) (1,495) (1,421) After-tax intangible asset amortization $ 3,748 $ 3,689 $ 3,793 $ 4,085 $ 4,197 (O) Tangible net income applicable to common shares (non-GAAP) $ 222,769 $ 218,346 $ 192,706 $ 192,621 $ 186,245 Total average shareholders’ equity $ 7,387,713 $ 7,166,608 $ 6,955,543 $ 6,862,040 $ 6,460,941 Less: Average preferred stock (425,000) (425,000) (483,288) (599,313) (412,500) (P) Total average common shareholders’ equity $ 6,962,713 $ 6,741,608 $ 6,472,255 $ 6,262,727 $ 6,048,441 Less: Average intangible assets (894,211) (901,022) (906,032) (910,924) (916,069) (Q) Total average tangible common shareholders’ equity (non-GAAP) $ 6,068,502 $ 5,840,586 $ 5,566,223 $ 5,351,803 $ 5,132,372 Return on average common equity, annualized (N/P) 12.76 % 12.63 % 11.58 % 12.07 % 12.21 % Return on average tangible common equity, annualized (non-GAAP) (O/Q) 14.89 % 14.83 % 13.74 % 14.44 % 14.72 % The accounting and reporting policies of Wintrust conform to generally accepted accounting principles (“GAAP”) in the United States and prevailing practices in the banking industry. However, certain non-GAAP performance measures and ratios are used by management to evaluate and measure the Company’s performance. Management believes that these measures and ratios provide users of the Company’s financial information a more meaningful view of the performance of the Company's interest-earning assets and interest-bearing liabilities and of the Company’s operating efficiency. Other financial holding companies may define or calculate these measures and ratios differently.

ORGANIZATION NAME 30 Non-GAAP Reconciliation The accounting and reporting policies of Wintrust conform to generally accepted accounting principles (“GAAP”) in the United States and prevailing practices in the banking industry. However, certain non-GAAP performance measures and ratios are used by management to evaluate and measure the Company’s performance. Management believes that these measures and ratios provide users of the Company’s financial information a more meaningful view of the performance of the Company's interest-earning assets and interest-bearing liabilities and of the Company’s operating efficiency. Other financial holding companies may define or calculate these measures and ratios differently. Three Months Ended Reconciliation of Non-GAAP Net Income per Common Share: ($ in Thousands): March 31, December 31, September 30, June 30, March 31, 2026 2025 2025 2025 2025 Net income $ 227,388 $ 223,024 $ 216,254 $ 195,527 $ 189,039 Preferred stock dividends 8,367 8,367 13,295 6,991 6,991 Preferred stock redemption — — 14,046 — — (R) Net income applicable to common shares $ 219,021 $ 214,657 $ 188,913 $ 188,536 $ 182,048 (S) Weighted average common shares outstanding 67,246 66,970 66,952 66,931 66,726 Dilutive potential common shares 851 1,143 1,028 888 923 (T) Average common shares and dilutive common shares 68,097 68,113 67,980 67,819 67,649 Net income per common share - Basic (R/S) $3.26 $3.21 $2.82 $2.82 $2.73 Net income per common share - Diluted (R/T) $3.22 $3.15 $2.78 $2.78 $2.69 Preferred stock series F excess one-time extended first dividend — $ — 4,927 — — Preferred stock redemption — — 14,046 — — (U) Total non-recurring preferred stock offering impact (non-GAAP) — $ — 18,973 — — Net income per common share - Basic (non-GAAP) (R+U)/S $3.26 $3.21 $3.11 $2.82 $2.73 Net income per common share - Diluted (non-GAAP) (R+U)/T $3.22 $3.15 $3.06 $2.78 $2.69

ORGANIZATION NAME 31 Non-GAAP Reconciliation The accounting and reporting policies of Wintrust conform to generally accepted accounting principles (“GAAP”) in the United States and prevailing practices in the banking industry. However, certain non-GAAP performance measures and ratios are used by management to evaluate and measure the Company’s performance. Management believes that these measures and ratios provide users of the Company’s financial information a more meaningful view of the performance of the Company's interest-earning assets and interest-bearing liabilities and of the Company’s operating efficiency. Other financial holding companies may define or calculate these measures and ratios differently. Three Months Ended Reconciliation of non-GAAP Tangible Common Equity ($'s and Shares in Thousands): March 31, December 31, September 30, June 30, March 31, 2026 2025 2025 2025 2025 Total shareholders’ equity (GAAP) $ 7,378,100 $ 7,258,715 $ 7,045,757 $ 7,225,696 $ 6,600,537 Less: Non-convertible preferred stock (GAAP) (425,000) (425,000) (425,000) (837,500) (412,500) Less: Acquisition-related intangible assets (GAAP) (890,698) (895,959) (902,936) (908,639) (913,004) (I) Total tangible common shareholders’ equity (non-GAAP) $ 6,062,402 $ 5,937,756 $ 5,717,821 $ 5,479,557 $ 5,275,033 (J) Total assets (GAAP) $ 72,157,433 $ 71,142,046 $ 69,629,638 $ 68,983,318 $ 65,870,066 Less: Acquisition-related intangible assets (GAAP) (890,698) (895,959) (902,936) (908,639) (913,004) (K) Total tangible assets (non-GAAP) $ 71,266,735 $ 70,246,087 $ 68,726,702 $ 68,074,679 $ 64,957,062 Common equity to assets ratio (GAAP) (L/J) 9.6 % 9.6 % 9.5 % 9.3 % 9.4 % Tangible common equity ratio (non-GAAP) (I/K) 8.5 % 8.5 % 8.3 % 8.0 % 8.1 % Reconciliation of non-GAAP Tangible Book Value per Common Share ($'s and Shares in Thousands): Total shareholders’ equity $ 7,378,100 $ 7,258,715 $ 7,045,757 $ 7,225,696 $ 6,600,537 Less: Non-convertible preferred stock (GAAP) (425,000) (425,000) (425,000) (837,500) (412,500) (L) Total common equity $ 6,953,100 $ 6,833,715 $ 6,620,757 $ 6,388,196 $ 6,188,037 (M) Actual common shares outstanding 67,437 66,975 66,961 66,938 66,919 Book value per common share (L/M) $103.10 $102.03 $98.87 $95.43 $92.47 Tangible book value per common share (non-GAAP) (I/M) $89.90 $88.66 $85.39 $81.86 $78.83

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Document and Entity Information Document

Apr. 20, 2026

Entity Information [Line Items]

Document Type

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Document Period End Date

Apr. 20, 2026

Entity Registrant Name

WINTRUST FINANCIAL CORP

Entity Incorporation, State or Country Code

IL

Entity File Number

001-35077

Entity Tax Identification Number

36-3873352

Entity Address, Address Line One

9700 W. Higgins Road

Entity Address, Address Line Two

Suite 800

Entity Address, City or Town

Rosemont

Entity Address, State or Province

IL

Entity Address, Postal Zip Code

60018

City Area Code

847

Local Phone Number

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Common Stock, no par value

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Trading Symbol

WTFC

Security Exchange Name

NASDAQ

7.875% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series F, no par value

Entity Information [Line Items]

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7.875% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series F, no par value

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