Form 8-K

8-K — WINTRUST FINANCIAL CORP

Accession: 0001015328-26-000019

Filed: 2026-07-20

Period: 2026-07-20

CIK: 0001015328

SIC: 6022 (STATE COMMERCIAL BANKS)

Item: Results of Operations and Financial Condition

Item: Financial Statements and Exhibits

Documents

8-K — wtfc-20260720.htm (Primary)

EX-99.1 (exhibit9912026-q2.htm)

EX-99.2 (earningsrelease2026-q2fi.htm)

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8-K

8-K (Primary)

Filename: wtfc-20260720.htm · Sequence: 1

wtfc-20260720

0001015328false00010153282026-07-202026-07-200001015328us-gaap:CommonStockMember2026-07-202026-07-200001015328wtfc:DepositorySharesSeriesFPreferredStockMember2026-07-202026-07-20

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): July 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 July 20, 2026, Wintrust Financial Corporation (the “Company”) announced earnings for the second quarter of 2026 and posted on its website the Second 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 33 through 35 of Exhibit 99.1 and pages 29 through 32 of Exhibit 99.2.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits

Exhibit

99.1

Second Quarter 2026 Earnings Release dated July 20, 2026

99.2

Second Quarter 2026 Earnings Release Presentation dated July 20, 2026

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: July 20, 2026

INDEX TO EXHIBITS

Exhibit

99.1

Second Quarter 2026 Earnings Release dated July 20, 2026

99.2

Second Quarter 2026 Earnings Release Presentation dated July 20, 2026

EX-99.1

Filename: exhibit9912026-q2.htm · Sequence: 2

Document

Exhibit 99.1

Wintrust Financial Corporation

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

News Release

FOR IMMEDIATE RELEASE July 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 Net Income

ROSEMONT, ILLINOIS – Wintrust Financial Corporation (“Wintrust”, “the Company”, “we” or “our”) (Nasdaq: WTFC) announced record net income of $461.1 million, or $6.52 per diluted common share, for the first six months of 2026 compared to net income of $384.6 million, or $5.47 per diluted common share, for the same period of 2025. This represents a year-to-date net income increase of 20% compared to the same period of 2025. Pre-tax, pre-provision income (non-GAAP) for the first six months of the year totaled a record $671.6 million, compared to $566.3 million for the first six months of 2025.

The Company reported record quarterly net income of $233.7 million, or $3.30 per diluted common share, for the second quarter of 2026, compared to net income of $227.4 million, or $3.22 per diluted common share, for the first quarter of 2026. Pre-tax, pre-provision income (non-GAAP) for the second quarter of 2026 totaled a record $341.1 million, as compared to $330.5 million for the first quarter of 2026.

Timothy S. Crane, President and Chief Executive Officer, commented, “We are pleased to deliver record results for the first six months of the year. Second quarter 2026 represents the sixth consecutive quarter of record net income for the Company. Strong diversified loan growth funded by robust organic deposit growth highlights the underlying strength of our business model. We continue to leverage our customer relationships and unique market positioning to grow the balance sheet and create long term franchise value.”

Additionally, Mr. Crane noted, “Net interest margin in the second quarter remained within our expected range at 3.52% and we generated record net interest income attributable to strong average earning asset growth. Building on our momentum, we believe consistent balance sheet growth, coupled with a stable net interest margin, should result in net interest income expansion in future quarters.”

Highlights of the second quarter of 2026:

Comparative information to the first quarter of 2026, unless otherwise noted

•Total loans increased by $1.6 billion, or 12% annualized.

•Total deposits increased by $2.2 billion, or 15% annualized.

•Total assets increased by $2.5 billion, or 14% annualized.

•Net interest income increased to $597.4 million in the second quarter of 2026, compared to $579.0 million in the first quarter of 2026, driven by robust average earning asset growth.

◦Net interest margin decreased to 3.50% (3.52% on a fully taxable-equivalent basis, non-GAAP) during the second quarter of 2026 primarily due to lower loan yields.

•Non-interest expense was impacted by the following:

◦A $5.2 million reversal of an FDIC special assessment accrued in the first quarter of 2024. The special assessments were in response to certain bank failures in 2023 and the reversal is based on the FDIC's final determination of losses to its Deposit Insurance Fund.

•Provision for credit losses totaled $23.1 million in the second quarter of 2026, compared to a provision for credit losses of $29.6 million in the first quarter of 2026.

•Net charge-offs totaled $13.4 million, or 10 basis points of average total loans on an annualized basis, in the second quarter of 2026 down from $18.4 million, or 14 basis points of average total loans on an annualized basis, in the first quarter of 2026.

•Non-performing loans totaled $179.3 million and comprised 0.32% of total loans at June 30, 2026, as compared to $182.7 million and 0.34% of total loans at March 31, 2026.

“Looking ahead, our pipelines remain strong and we believe we are well-positioned to generate consistent balance sheet growth while maintaining our disciplined underwriting standards. We remain committed to growing net interest income and exercising prudent expense management, which position us to deliver positive operating leverage for 2026”, Mr. Crane said.

* * *

The graphs shown on pages 3-7 illustrate certain financial highlights of the second quarter of 2026 as well as historical financial performance. See “Supplemental Non-GAAP Financial Measures/Ratios” at Table 18 for additional information with respect to non-GAAP financial measures/ratios, including the reconciliations to the corresponding GAAP financial measures/ratios.

*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.

SUMMARY OF RESULTS:

BALANCE SHEET

Total assets increased $2.5 billion in the second quarter of 2026 compared to the first quarter of 2026, driven by a $1.6 billion increase in total loans. The strong loan growth was diversified across all major loan categories, including seasonally higher growth in our Premium Finance Receivables - Property and Casualty portfolio.

Total liabilities increased by $2.4 billion in the second quarter of 2026 compared to the first quarter of 2026, driven by a $2.2 billion increase in total deposits. Robust organic deposit growth in the second quarter of 2026 was driven by our diverse customer base and product offerings. Non-interest bearing deposit balances represented 19% 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 91.0%.

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 second quarter of 2026, net interest income totaled $597.4 million, compared to $579.0 million in the first quarter of 2026. The increase in net interest income in the second quarter of 2026 was driven by robust average earning asset growth of $2.1 billion.

Net interest margin was 3.50% (3.52% on a fully taxable-equivalent basis, non-GAAP) during the second quarter of 2026, down four basis points compared to the first quarter of 2026. The yield on earning assets declined four basis points during the second quarter of 2026 primarily due to a seven basis point decrease in loan yields. Funding cost on interest-bearing deposits remained unchanged compared to the first quarter of 2026. The net free funds contribution in the second quarter of 2026 was flat compared to the first quarter of 2026.

For more information regarding net interest income, see Table 4 through Table 8 in this report.

ASSET QUALITY

The allowance for credit losses totaled $481.2 million as of June 30, 2026, an increase from $471.6 million as of March 31, 2026. A provision for credit losses totaling $23.1 million was recorded for the second quarter of 2026 compared to $29.6 million recorded in the first quarter of 2026. The provision for credit losses recognized in the second quarter of 2026 reflects stable credit quality and a mostly stable macroeconomic forecast. However, given future economic performance remains uncertain, allowance results capture uncertainty related to credit spreads, equity market valuations, consumer & business sentiment, and the job market. For more information regarding the allowance for credit losses and provision for credit losses, see Table 11 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 June 30, 2026, March 31, 2026, and December 31, 2025 is shown on Table 12 of this report.

Net charge-offs totaled $13.4 million in the second quarter of 2026, a decrease of $5.0 million compared to $18.4 million of net charge-offs in the first quarter of 2026. Net charge-offs as a percentage of average total loans were 10 basis points in the second quarter of 2026 on an annualized basis compared to 14 basis points on an annualized basis in the first quarter of 2026. For more information regarding net charge-offs, see Table 10 in this report.

The Company’s loan portfolio delinquency rates remain low. For more information regarding past due loans, see Table 13 in this report.

Non-performing assets and non-performing loans were stable compared to prior quarter. Non-performing assets totaled $195.2 million and comprised 0.26% of total assets as of June 30, 2026, as compared to $200.2 million, or 0.28% of total assets, as of March 31, 2026. Non-performing loans totaled $179.3 million and comprised 0.32% of total loans at June 30, 2026, as

compared to $182.7 million and 0.34% of total loans at March 31, 2026. For more information regarding non-performing assets, see Table 14 in this report.

NON-INTEREST INCOME

Non-interest income totaled $141.3 million in the second quarter of 2026, compared to $134.1 million in the first quarter of 2026.

Wealth management revenue decreased by approximately $2.2 million in the second quarter of 2026, compared to the first quarter of 2026. The decrease in the second quarter of 2026 was primarily driven by performance based revenues on certain customer relationships which positively impacted results in the first quarter of 2026. 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 $27.4 million in the second quarter of 2026, compared to $23.4 million in the first quarter of 2026. The increase in the second quarter of 2026 was primarily attributed to higher operational revenue. For more information regarding mortgage banking revenue, see Table 16 in this report.

The Company recognized approximately $1.8 million in net gains on investment securities in the second quarter of 2026 compared to approximately $31,000 in net losses in the first quarter of 2026. The net gains in the second quarter of 2026 were primarily the result of fair value adjustments on the Company’s equity investment securities with a readily determinable fair value.

For more information regarding non-interest income, see Table 15 in this report.

NON-INTEREST EXPENSE

Non-interest expense totaled $397.5 million in the second quarter of 2026, increasing $14.9 million, compared to $382.6 million in the first quarter of 2026. Non-interest expense, as a percent of average assets, remained stable at 2.21% in the second quarter of 2026.

Salaries and employee benefits expense increased by approximately $5.6 million in the second quarter of 2026, compared to the first quarter of 2026. This was primarily driven by higher commissions and incentives expense attributable to an increase in mortgage originations and a full quarter impact of the annual merit increases reflected in base salaries.

Advertising and marketing expense in the second quarter of 2026 totaled $20.4 million, which was a $7.2 million increase as compared to the first quarter of 2026. The increase in the second quarter was primarily driven by summer sports sponsorships and other community sponsorship events. 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.

FDIC insurance totaled $6.6 million in the second quarter of 2026, a $4.4 million decrease from the first quarter of 2026. This was primarily the result of a reversal of the $5.2 million FDIC special assessment recorded in the first quarter of 2024. The special assessments were in response to certain bank failures in 2023 and the reversal is based on the FDIC's final determination of losses to its Deposit Insurance Fund.

For more information regarding non-interest expense, see Table 17 in this report.

INCOME TAXES

The Company recorded income tax expense of $84.3 million in the second quarter of 2026 compared to $73.6 million in the first quarter of 2026. The effective tax rates were 26.5% in the second quarter of 2026 compared to 24.4% in the first quarter of 2026. 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 $140,000 in the second quarter of 2026, compared to net excess tax benefits of $6.6 million in the first quarter of 2026 related to share-based compensation.

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 second quarter of 2026, community banking increased its commercial, commercial real estate and residential real estate loan portfolios.

Mortgage banking revenue was $27.4 million for the second quarter of 2026, an increase of $4.0 million compared to the first quarter of 2026. See Table 16 for more detail. Service charges on deposit accounts totaled $21.2 million in the second quarter of 2026 as compared to $21.0 million in the first quarter of 2026. The Company’s gross commercial and commercial real estate loan pipelines remained solid as of June 30, 2026 indicating momentum for expected continued loan growth in the third 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 approximately $5.8 billion during the second quarter of 2026. Average balances increased by $361.6 million, as compared to the first quarter of 2026. The Company’s leasing divisions’ portfolio balances increased in the second quarter of 2026, with capital leases, loans, and equipment on operating leases of $3.1 billion, $1.2 billion, and $363.7 million as of June 30, 2026, respectively, compared to $3.0 billion, $1.2 billion, and $362.8 million as of March 31, 2026, respectively. Revenues from the Company’s out-sourced administrative services business were $1.3 million in the second quarter of 2026, which was relatively stable compared to the first quarter of 2026.

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 $39.9 million in the second quarter of 2026, a decrease as compared to the first quarter of 2026. At June 30, 2026, the Company’s wealth management subsidiaries had approximately $49.7 billion of assets under administration, which excludes assets owned by the Company and its subsidiary banks.

WINTRUST FINANCIAL CORPORATION

Key Operating Measures

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

% or (1)

basis point (bp) change from

1st Quarter

2026

% or

basis point (bp) change from

2nd Quarter

2025

Three Months Ended

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

Net income $ 233,693 $ 227,388 $ 195,527 3 % 20 %

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

341,098 330,534 289,322 3 18

Net income per common share – Diluted 3.30 3.22 2.78 2 19

Cash dividends declared per common share 0.55 0.55 0.50 — 10

Net revenue (3)

738,635 713,166 670,783 4 10

Net interest income 597,366 579,024 546,694 3 9

Net interest margin 3.50 % 3.54 % 3.52 % (4) bps (2) bps

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

3.52 3.56 3.54 (4) (2)

Net overhead ratio (4)

1.42 1.44 1.57 (2) (15)

Return on average assets 1.30 1.32 1.19 (2) 11

Return on average common equity 12.82 12.76 12.07 6 75

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

14.91 14.89 14.44 2 47

At end of period

Total assets $ 74,668,135 $ 72,157,433 $ 68,983,318 14 % 8 %

Total loans (5)

55,654,947 54,071,292 51,041,679 12 9

Total deposits 61,141,275 58,914,382 55,816,811 15 10

Total shareholders’ equity 7,525,116 7,378,100 7,225,696 8 4

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

(2)See Table 18: 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.

WINTRUST FINANCIAL CORPORATION

Selected Financial Highlights

Three Months Ended Six Months Ended

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

Selected Financial Condition Data (at end of period):

Total assets $ 74,668,135 $ 72,157,433 $ 71,142,046 $ 69,629,638 $ 68,983,318

Total loans (1)

55,654,947 54,071,292 53,105,101 52,063,482 51,041,679

Total deposits 61,141,275 58,914,382 57,717,191 56,711,381 55,816,811

Total shareholders’ equity 7,525,116 7,378,100 7,258,715 7,045,757 7,225,696

Selected Statements of Income Data:

Net interest income $ 597,366 $ 579,024 $ 583,874 $ 567,010 $ 546,694 $ 1,176,390 $ 1,073,168

Net revenue (2)

738,635 713,166 714,264 697,837 670,783 1,451,801 1,313,891

Net income 233,693 227,388 223,024 216,254 195,527 461,081 384,566

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

341,098 330,534 329,811 317,809 289,322 671,632 566,340

Net income per common share – Basic 3.34 3.26 3.21 2.82 2.82 6.60 5.55

Net income per common share – Diluted 3.30 3.22 3.15 2.78 2.78 6.52 5.47

Cash dividends declared per common share 0.55 0.55 0.50 0.50 0.50 1.10 1.00

Selected Financial Ratios and Other Data:

Performance Ratios:

Net interest margin 3.50 % 3.54 % 3.52 % 3.48 % 3.52 % 3.52 % 3.53 %

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

3.52 3.56 3.54 3.50 3.54 3.54 3.55

Non-interest income to average assets 0.79 0.78 0.74 0.76 0.76 0.78 0.75

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

Net overhead ratio (4)

1.42 1.44 1.45 1.45 1.57 1.43 1.57

Return on average assets 1.30 1.32 1.27 1.26 1.19 1.31 1.19

Return on average common equity 12.82 12.76 12.63 11.58 12.07 12.79 12.14

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

14.91 14.89 14.83 13.74 14.44 14.90 14.57

Average total assets $ 72,161,723 $ 70,089,123 $ 69,492,268 $ 68,303,036 $ 65,840,345 $ 71,131,148 $ 64,978,481

Average total shareholders’ equity 7,474,449 7,387,713 7,166,608 6,955,543 6,862,040 7,431,321 6,662,598

Average loans to average deposits ratio 92.6 % 93.1 % 92.4 % 92.5 % 93.0 % 92.8 % 92.7 %

Period-end loans to deposits ratio 91.0 91.8 92.0 91.8 91.4

Common Share Data at end of period:

Market price per common share $ 160.72 $ 138.94 $ 139.82 $ 132.44 $ 123.98

Book value per common share 105.26 103.10 102.03 98.87 95.43

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

92.13 89.90 88.66 85.39 81.86

Common shares outstanding 67,455,414 67,437,300 66,974,913 66,961,209 66,937,732

Other Data at end of period:

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

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

8.4 8.5 8.5 8.3 8.0

Tier 1 leverage ratio (5)

9.8 9.8 9.6 9.5 10.2

Risk-based capital ratios:

Tier 1 capital ratio (5)

11.1 11.1 11.0 10.9 11.5

Common equity tier 1 capital ratio (5)

10.4 10.4 10.3 10.2 10.0

Total capital ratio (5)

12.4 12.6 12.4 12.4 13.0

Allowance for credit losses (6)

$ 481,189 $ 471,591 $ 460,465 $ 454,586 $ 457,461

Allowance for loan and unfunded lending-related commitment losses to total loans 0.86 % 0.87 % 0.87 % 0.87 % 0.90 %

Number of:

Bank subsidiaries 16 16 16 16 16

Banking offices 210 209 209 208 208

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

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

(3)See Table 18: Supplemental Non-GAAP Financial Measures/Ratios for additional information on this performance measure/ratio.

(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.

WINTRUST FINANCIAL CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CONDITION

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

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

(In thousands) 2026 2026 2025 2025 2025

Assets

Cash and due from banks $ 595,790 $ 543,654 $ 467,874 $ 565,406 $ 695,501

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

Interest-bearing deposits with banks 3,573,915 3,051,665 3,180,553 3,422,452 4,569,618

Available-for-sale securities, at fair value 7,587,545 7,244,282 6,236,263 5,274,124 4,885,715

Held-to-maturity securities, at amortized cost 3,196,452 3,270,207 3,343,905 3,438,406 3,502,186

Equity securities with readily determinable fair value 65,815 63,786 63,770 63,445 273,722

Federal Home Loan Bank and Federal Reserve Bank stock 294,629 292,044 291,881 282,755 282,087

Mortgage loans held-for-sale, at fair value 407,495 383,405 340,745 333,883 299,606

Loans, net of unearned income 55,654,947 54,071,292 53,105,101 52,063,482 51,041,679

Allowance for loan losses (402,952) (390,651) (379,283) (386,622) (391,654)

Net loans 55,251,995 53,680,641 52,725,818 51,676,860 50,650,025

Premises, software and equipment, net 778,958 777,603 781,611 775,425 776,324

Lease investments, net 363,664 362,766 360,646 301,000 289,768

Accrued interest receivable and other assets 1,666,474 1,596,617 1,617,682 1,614,674 1,610,025

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

Goodwill 797,219 797,658 797,960 797,639 798,144

Other acquisition-related intangible assets 88,119 93,040 97,999 105,297 110,495

Total assets $ 74,668,135 $ 72,157,433 $ 71,142,046 $ 69,629,638 $ 68,983,318

Liabilities and Shareholders’ Equity

Deposits:

Non-interest-bearing $ 11,796,736 $ 12,112,891 $ 11,423,701 $ 10,952,146 $ 10,877,166

Interest-bearing 49,344,539 46,801,491 46,293,490 45,759,235 44,939,645

Total deposits 61,141,275 58,914,382 57,717,191 56,711,381 55,816,811

Federal Home Loan Bank advances 3,450,680 3,451,309 3,451,309 3,151,309 3,151,309

Other borrowings 370,736 340,647 477,966 579,328 625,392

Subordinated notes 298,820 298,717 298,636 298,536 298,458

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 1,627,942 1,520,712 1,684,663 1,589,761 1,572,981

Total liabilities 67,143,019 64,779,333 63,883,331 62,583,881 61,757,622

Shareholders’ Equity:

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

Common stock 67,581 67,563 67,062 67,042 67,025

Surplus 2,560,427 2,546,754 2,534,024 2,521,306 2,495,637

Treasury stock (14,882) (13,970) (9,156) (9,150) (9,156)

Retained earnings 4,907,788 4,719,561 4,537,539 4,356,367 4,200,923

Accumulated other comprehensive loss (420,798) (366,808) (295,754) (314,808) (366,233)

Total shareholders’ equity 7,525,116 7,378,100 7,258,715 7,045,757 7,225,696

Total liabilities and shareholders’ equity $ 74,668,135 $ 72,157,433 $ 71,142,046 $ 69,629,638 $ 68,983,318

WINTRUST FINANCIAL CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

Three Months Ended Six Months Ended

(Dollars in thousands, except per share data) Jun 30,

2026 Mar 31,

2026 Dec 31,

2025 Sep 30,

2025 Jun 30,

2025 Jun 30, 2026 Jun 30, 2025

Interest income

Interest and fees on loans $ 822,981 $ 797,889 $ 822,494 $ 832,140 $ 797,997 $ 1,620,870 $ 1,566,359

Mortgage loans held-for-sale 6,169 4,615 5,607 4,757 4,872 10,784 9,118

Interest-bearing deposits with banks 20,916 19,150 27,190 34,992 34,317 40,066 71,083

Federal funds sold and securities purchased under resale agreements 5 64 77 75 276 69 455

Investment securities 105,716 100,278 95,461 86,426 78,053 205,994 150,069

Trading account securities — — — — — — 11

Federal Home Loan Bank and Federal Reserve Bank stock 5,625 5,564 5,497 5,444 5,393 11,189 10,700

Brokerage customer receivables — — — — — — 78

Total interest income 961,412 927,560 956,326 963,834 920,908 1,888,972 1,807,873

Interest expense

Interest on deposits 325,033 309,187 332,178 355,846 333,470 634,220 653,703

Interest on Federal Home Loan Bank advances 28,218 27,701 26,408 26,007 25,724 55,919 51,165

Interest on other borrowings 3,121 4,026 5,956 6,887 6,957 7,147 13,749

Interest on subordinated notes 3,739 3,719 3,737 3,717 3,735 7,458 7,449

Interest on junior subordinated debentures 3,935 3,903 4,173 4,367 4,328 7,838 8,639

Total interest expense 364,046 348,536 372,452 396,824 374,214 712,582 734,705

Net interest income 597,366 579,024 583,874 567,010 546,694 1,176,390 1,073,168

Provision for credit losses 23,134 29,594 27,588 21,768 22,234 52,728 46,197

Net interest income after provision for credit losses 574,232 549,430 556,286 545,242 524,460 1,123,662 1,026,971

Non-interest income

Wealth management 39,883 42,059 39,365 37,188 36,821 81,942 70,863

Mortgage banking 27,438 23,396 22,625 24,451 23,170 50,834 43,699

Service charges on deposit accounts 21,240 20,970 20,402 19,825 19,502 42,210 38,864

Gains (losses) on investment securities, net 1,845 (31) 1,505 2,972 650 1,814 3,846

Fees from covered call options 4,793 4,669 5,992 5,619 5,624 9,462 9,070

Trading gains (losses), net 70 10 (257) 172 151 80 87

Operating lease income, net 18,804 19,154 16,365 15,466 15,166 37,958 30,453

Other 27,196 23,915 24,393 25,134 23,005 51,111 43,841

Total non-interest income 141,269 134,142 130,390 130,827 124,089 275,411 240,723

Non-interest expense

Salaries and employee benefits 234,089 228,447 222,557 219,668 219,541 462,536 431,067

Software and equipment 39,288 35,654 36,096 35,027 36,522 74,942 71,239

Operating lease equipment 11,187 10,987 11,034 10,409 10,757 22,174 21,228

Occupancy, net 21,153 20,566 20,105 20,809 20,228 41,719 41,006

Data processing 10,659 11,266 11,809 11,329 12,110 21,925 23,384

Advertising and marketing 20,432 13,218 13,792 19,027 18,761 33,650 31,033

Professional fees 9,342 7,375 8,280 7,465 9,243 16,717 18,287

Amortization of other acquisition-related intangible assets 4,921 4,958 4,999 5,196 5,580 9,879 11,198

FDIC insurance 6,640 10,990 10,562 11,418 10,971 17,630 21,897

Other real estate owned (“OREO”) expenses, net 786 207 2,162 262 505 993 1,148

Other 39,040 38,964 43,057 39,418 37,243 78,004 76,064

Total non-interest expense 397,537 382,632 384,453 380,028 381,461 780,169 747,551

Income before taxes 317,964 300,940 302,223 296,041 267,088 618,904 520,143

Income tax expense 84,271 73,552 79,199 79,787 71,561 157,823 135,577

Net income $ 233,693 $ 227,388 $ 223,024 $ 216,254 $ 195,527 $ 461,081 $ 384,566

Preferred stock dividends 8,367 8,367 8,367 13,295 6,991 16,734 13,982

Preferred stock redemption — — — 14,046 — — —

Net income applicable to common shares $ 225,326 $ 219,021 $ 214,657 $ 188,913 $ 188,536 $ 444,347 $ 370,584

Net income per common share - Basic $ 3.34 $ 3.26 $ 3.21 $ 2.82 $ 2.82 $ 6.60 $ 5.55

Net income per common share - Diluted $ 3.30 $ 3.22 $ 3.15 $ 2.78 $ 2.78 $ 6.52 $ 5.47

Cash dividends declared per common share $ 0.55 $ 0.55 $ 0.50 $ 0.50 $ 0.50 $ 1.10 $ 1.00

Weighted average common shares outstanding 67,434 67,246 66,970 66,952 66,931 67,341 66,829

Dilutive potential common shares 852 851 1,143 1,028 888 852 903

Average common shares and dilutive common shares 68,286 68,097 68,113 67,980 67,819 68,193 67,732

TABLE 1: LOAN PORTFOLIO MIX AND GROWTH RATES

% Growth From (1)

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

2025 Jun 30, 2025

Mar 31,

2026 (2)

Jun 30, 2025

Balance:

Mortgage loans held-for-sale, excluding early buy-out exercised loans guaranteed by U.S. government agencies $ 265,203 $ 249,350 $ 217,136 $ 211,360 $ 192,633 26 % 38 %

Mortgage loans held-for-sale, early buy-out exercised loans guaranteed by U.S. government agencies 142,292 134,055 123,609 122,523 106,973 25 33

Total mortgage loans held-for-sale $ 407,495 $ 383,405 $ 340,745 $ 333,883 $ 299,606 25 % 36 %

Core loans:

Commercial

Commercial and industrial $ 7,802,625 $ 7,620,239 $ 7,267,505 $ 7,135,083 $ 7,028,247 10 % 11 %

Asset-based lending 1,628,319 1,558,089 1,512,888 1,588,522 1,663,693 18 (2)

Municipal 866,012 839,633 868,958 804,986 771,785 13 12

Leases 3,114,901 3,002,014 2,921,366 2,834,563 2,757,331 15 13

Commercial real estate

Residential construction 52,590 53,097 54,753 60,923 59,027 (4) (11)

Commercial construction 2,294,566 1,959,375 2,013,244 2,273,545 2,165,263 69 6

Land 308,509 311,470 341,585 323,685 304,827 (4) 1

Office 1,607,275 1,652,482 1,688,614 1,578,208 1,601,208 (11) —

Industrial 3,405,641 3,323,977 3,167,768 2,912,547 2,824,889 10 21

Retail 1,475,949 1,469,658 1,436,252 1,478,861 1,452,351 2 2

Multi-family 3,299,607 3,565,419 3,445,507 3,306,597 3,200,578 (30) 3

Mixed use and other 1,826,470 1,826,808 1,793,013 1,684,841 1,683,867 (0) 8

Home equity 491,782 471,264 480,525 484,202 466,815 17 5

Residential real estate

Residential real estate loans for investment 4,411,357 4,319,941 4,171,439 4,019,046 3,814,715 8 16

Residential mortgage loans, early buy-out eligible loans guaranteed by U.S. government agencies 76,334 83,036 84,706 75,088 80,800 (32) (6)

Residential mortgage loans, early buy-out exercised loans guaranteed by U.S. government agencies 55,001 62,189 61,087 49,736 53,267 (46) 3

Total core loans $ 32,716,938 $ 32,118,691 $ 31,309,210 $ 30,610,433 $ 29,928,663 7 % 9 %

Niche loans:

Commercial

Franchise $ 1,300,935 $ 1,293,639 $ 1,298,493 $ 1,298,140 $ 1,286,265 2 % 1 %

Mortgage warehouse lines of credit 1,897,762 1,800,972 1,515,003 1,204,661 1,232,530 22 54

Community Advantage - homeowners association 516,782 526,274 532,027 537,696 526,595 (7) (2)

Insurance agency lending 1,153,975 1,122,361 1,128,446 1,140,691 1,120,985 11 3

Premium Finance receivables

U.S. property & casualty insurance 7,744,361 7,127,234 7,308,054 7,502,901 7,378,340 35 5

Canada property & casualty insurance 867,662 763,097 875,362 863,391 944,836 55 (8)

Life insurance 9,312,521 9,196,382 9,023,642 8,758,553 8,506,960 5 9

Consumer and other 144,011 122,642 114,864 147,016 116,505 70 24

Total niche loans $ 22,938,009 $ 21,952,601 $ 21,795,891 $ 21,453,049 $ 21,113,016 18 % 9 %

Total loans, net of unearned income $ 55,654,947 $ 54,071,292 $ 53,105,101 $ 52,063,482 $ 51,041,679 12 % 9 %

(1)NM - Not Meaningful.

(2)Annualized.

TABLE 2: DEPOSIT PORTFOLIO MIX AND GROWTH RATES

% Growth From

(Dollars in thousands) Jun 30,

2026 Mar 31,

2026 Dec 31,

2025 Sep 30,

2025 Jun 30,

2025

Mar 31,

2026 (1)

Jun 30, 2025

Balance:

Non-interest-bearing $ 11,796,736 $ 12,112,891 $ 11,423,701 $ 10,952,146 $ 10,877,166 (10) % 8 %

NOW and interest-bearing demand deposits 6,742,269 5,987,258 6,233,753 6,710,919 6,795,725 51 (1)

Wealth management deposits (2)

1,349,949 1,670,620 1,907,647 1,600,735 1,595,764 (77) (15)

Money market 23,083,225 21,714,267 21,368,924 20,270,382 19,556,041 25 18

Savings 6,597,516 6,942,565 6,905,216 6,758,743 6,659,419 (20) (1)

Time certificates of deposit 11,571,580 10,486,781 9,877,950 10,418,456 10,332,696 41 12

Total deposits $ 61,141,275 $ 58,914,382 $ 57,717,191 $ 56,711,381 $ 55,816,811 15 % 10 %

Mix:

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

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

Wealth management deposits (2)

2 3 3 3 3

Money market 38 37 37 36 35

Savings 11 12 12 12 12

Time certificates of deposit 19 18 17 18 19

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 June 30, 2026

(Dollars in thousands) Total Time

Certificates of

Deposit Weighted-Average

Rate of Maturing

Time Certificates

of Deposit

1-3 months $ 5,548,778 3.57 %

4-6 months 3,389,412 3.49

7-9 months 1,458,932 3.43

10-12 months 604,775 3.38

13-18 months 413,060 3.50

19-24 months 72,439 2.84

24+ months 84,184 2.61

Total $ 11,571,580 3.51 %

TABLE 4: QUARTERLY AVERAGE BALANCES

Average Balance for three months ended,

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

(In thousands) 2026 2026 2025 2025 2025

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

$ 2,412,081 $ 2,247,083 $ 2,842,829 $ 3,276,683 $ 3,308,199

Investment securities (2)

10,832,538 10,616,617 10,084,138 9,377,930 8,801,560

FHLB and FRB stock (3)

292,325 291,972 284,643 282,338 282,001

Liquidity management assets (4)

$ 13,536,944 $ 13,155,672 $ 13,211,610 $ 12,936,951 $ 12,391,760

Mortgage loans held-for-sale 402,175 317,047 357,672 295,365 310,534

Loans, net of unearned income (4) (5)

54,491,469 52,845,685 52,193,637 51,403,566 49,517,635

Total earning assets (4)

$ 68,430,588 $ 66,318,404 $ 65,762,919 $ 64,635,882 $ 62,219,929

Allowance for loan and investment security losses (405,743) (391,810) (404,075) (410,681) (398,685)

Cash and due from banks 519,586 534,189 517,616 495,292 478,707

Other assets 3,617,292 3,628,340 3,615,808 3,582,543 3,540,394

Total assets

$ 72,161,723 $ 70,089,123 $ 69,492,268 $ 68,303,036 $ 65,840,345

NOW and interest-bearing demand deposits $ 6,453,420 $ 6,081,218 $ 6,133,333 $ 6,687,292 $ 6,423,050

Wealth management deposits 1,485,347 1,858,560 1,925,808 1,604,142 1,552,989

Money market accounts 22,000,942 21,156,125 20,475,659 19,431,021 18,184,754

Savings accounts 6,707,916 6,921,251 6,814,263 6,723,325 6,578,698

Time deposits 10,938,312 9,782,112 10,045,136 10,319,719 9,841,702

Interest-bearing deposits $ 47,585,937 $ 45,799,266 $ 45,394,199 $ 44,765,499 $ 42,581,193

FHLB advances (3)

3,450,773 3,451,312 3,203,483 3,151,310 3,151,310

Other borrowings 358,511 442,200 547,507 614,892 593,657

Subordinated notes 298,757 298,661 298,576 298,481 298,398

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

Total interest-bearing liabilities

$ 51,947,544 $ 50,245,005 $ 49,697,331 $ 49,083,748 $ 46,878,124

Non-interest-bearing deposits 11,273,344 10,963,887 11,080,254 10,791,709 10,643,798

Other liabilities 1,466,386 1,492,518 1,548,075 1,472,036 1,456,383

Equity 7,474,449 7,387,713 7,166,608 6,955,543 6,862,040

Total liabilities and shareholders’ equity

$ 72,161,723 $ 70,089,123 $ 69,492,268 $ 68,303,036 $ 65,840,345

Net free funds/contribution (6)

$ 16,483,044 $ 16,073,399 $ 16,065,588 $ 15,552,134 $ 15,341,805

(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 18: Supplemental Non-GAAP Financial Measures/Ratios for additional information on this performance measure/ratio.

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

(6)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.

TABLE 5: QUARTERLY NET INTEREST INCOME

Net Interest Income for three months ended,

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

(In thousands) 2026 2026 2025 2025 2025

Interest income:

Interest-bearing deposits with banks, securities purchased under resale agreements and cash equivalents $ 20,921 $ 19,214 $ 27,267 $ 35,067 $ 34,593

Investment securities 106,346 100,864 96,122 87,101 78,733

FHLB and FRB stock (1)

5,625 5,564 5,497 5,444 5,393

Liquidity management assets (2)

$ 132,892 $ 125,642 $ 128,886 $ 127,612 $ 118,719

Mortgage loans held-for-sale 6,169 4,615 5,607 4,757 4,872

Loans, net of unearned income (2)

825,092 799,915 824,628 834,294 800,197

Total interest income $ 964,153 $ 930,172 $ 959,121 $ 966,663 $ 923,788

Interest expense:

NOW and interest-bearing demand deposits $ 32,318 $ 29,666 $ 31,681 $ 40,448 $ 37,517

Wealth management deposits 6,823 8,941 10,011 8,415 8,182

Money market accounts 165,035 155,299 163,585 169,831 155,890

Savings accounts 25,729 30,672 34,371 38,844 37,637

Time deposits 95,128 84,609 92,530 98,308 94,244

Interest-bearing deposits $ 325,033 $ 309,187 $ 332,178 $ 355,846 $ 333,470

FHLB advances (1)

28,218 27,701 26,408 26,007 25,724

Other borrowings 3,121 4,026 5,956 6,887 6,957

Subordinated notes 3,739 3,719 3,737 3,717 3,735

Junior subordinated debentures 3,935 3,903 4,173 4,367 4,328

Total interest expense $ 364,046 $ 348,536 $ 372,452 $ 396,824 $ 374,214

Less: Fully taxable-equivalent adjustment (2,741) (2,612) (2,795) (2,829) (2,880)

Net interest income (GAAP) (3)

597,366 579,024 583,874 567,010 546,694

Fully taxable-equivalent adjustment 2,741 2,612 2,795 2,829 2,880

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

$ 600,107 $ 581,636 $ 586,669 $ 569,839 $ 549,574

(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 18: Supplemental Non-GAAP Financial Measures/Ratios for additional information on this performance measure/ratio.

TABLE 6: QUARTERLY NET INTEREST MARGIN

Net Interest Margin for three months ended,

Jun 30, 2026 Mar 31, 2026 Dec 31,

2025 Sep 30, 2025 Jun 30,

2025

Yield earned on:

Interest-bearing deposits with banks, securities purchased under resale agreements and cash equivalents 3.48 % 3.47 % 3.81 % 4.25 % 4.19 %

Investment securities 3.94 3.85 3.78 3.68 3.59

FHLB and FRB stock (1)

7.72 7.73 7.66 7.65 7.67

Liquidity management assets 3.94 % 3.87 % 3.87 % 3.91 % 3.84 %

Mortgage loans held-for-sale 6.15 5.90 6.22 6.39 6.29

Loans, net of unearned income 6.07 6.14 6.27 6.44 6.48

Total earning assets 5.65 % 5.69 % 5.79 % 5.93 % 5.96 %

Rate paid on:

NOW and interest-bearing demand deposits 2.01 % 1.98 % 2.05 % 2.40 % 2.34 %

Wealth management deposits 1.84 1.95 2.06 2.08 2.11

Money market accounts 3.01 2.98 3.17 3.47 3.44

Savings accounts 1.54 1.80 2.00 2.29 2.29

Time deposits 3.49 3.51 3.65 3.78 3.84

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

FHLB advances 3.28 3.26 3.27 3.27 3.27

Other borrowings 3.49 3.69 4.32 4.44 4.70

Subordinated notes 5.02 5.05 4.97 4.94 5.02

Junior subordinated debentures 6.22 6.24 6.53 6.83 6.85

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

Interest rate spread (2) (3)

2.84 % 2.88 % 2.82 % 2.72 % 2.76 %

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

Net free funds/contribution (4)

0.68 0.68 0.72 0.78 0.78

Net interest margin (GAAP) (3)

3.50 % 3.54 % 3.52 % 3.48 % 3.52 %

Fully taxable-equivalent adjustment 0.02 0.02 0.02 0.02 0.02

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

3.52 % 3.56 % 3.54 % 3.50 % 3.54 %

(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 18: 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.

TABLE 7: YEAR-TO-DATE AVERAGE BALANCES, AND NET INTEREST INCOME AND MARGIN

Average Balance

for six months ended,

Interest

for six months ended,

Yield/Rate

for six months ended,

(Dollars in thousands) Jun 30, 2026 Jun 30,

2025 Jun 30, 2026 Jun 30, 2025 Jun 30, 2026 Jun 30, 2025

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

$ 2,330,038 $ 3,413,538 $ 40,135 $ 71,538 3.47 % 4.23 %

Investment securities (2)

10,725,174 8,606,730 207,210 151,439 3.90 3.55

FHLB and FRB stock (3)

292,149 281,853 11,189 10,700 7.72 7.66

Liquidity management assets (4) (5)

$ 13,347,361 $ 12,302,121 $ 258,534 $ 233,677 3.91 % 3.83 %

Other earning assets (4) (5) (6)

— 6,533 — 92 — 2.84

Mortgage loans held-for-sale 359,846 298,688 10,784 9,118 6.04 6.16

Loans, net of unearned income (4) (5) (7)

53,673,123 48,680,160 1,625,007 1,570,765 6.11 6.51

Total earning assets (5)

$ 67,380,330 $ 61,287,502 $ 1,894,325 $ 1,813,652 5.67 % 5.97 %

Allowance for loan and investment security losses (398,815) (387,092)

Cash and due from banks 526,847 477,571

Other assets 3,622,786 3,600,500

Total assets

$ 71,131,148 $ 64,978,481

NOW and interest-bearing demand deposits $ 6,268,347 $ 6,235,661 $ 61,985 $ 71,117 1.99 % 2.30 %

Wealth management deposits 1,670,923 1,563,675 15,764 16,788 1.90 2.17

Money market accounts 21,580,867 17,884,615 320,334 302,264 2.99 3.41

Savings accounts 6,813,994 6,529,345 56,401 73,560 1.67 2.27

Time deposits 10,363,406 9,625,117 179,736 189,974 3.50 3.98

Interest-bearing deposits $ 46,697,537 $ 41,838,413 $ 634,220 $ 653,703 2.74 % 3.15 %

FHLB advances (3)

3,451,041 3,151,310 55,919 51,165 3.27 3.27

Other borrowings 400,124 587,930 7,147 13,749 3.60 4.72

Subordinated notes 298,709 298,353 7,458 7,449 5.04 5.04

Junior subordinated debentures 253,566 253,566 7,838 8,639 6.23 6.87

Total interest-bearing liabilities

$ 51,100,977 $ 46,129,572 $ 712,582 $ 734,705 2.81 % 3.21 %

Non-interest-bearing deposits 11,119,470 10,687,733

Other liabilities 1,479,380 1,498,578

Equity 7,431,321 6,662,598

Total liabilities and shareholders’ equity

$ 71,131,148 $ 64,978,481

Interest rate spread (5) (8)

2.86 % 2.76 %

Less: Fully taxable-equivalent adjustment (5,353) (5,779) (0.02) (0.02)

Net free funds/contribution (9)

$ 16,279,353 $ 15,157,930 0.68 0.79

Net interest income/margin (GAAP) (5)

$ 1,176,390 $ 1,073,168 3.52 % 3.53 %

Fully taxable-equivalent adjustment 5,353 5,779 0.02 0.02

Net interest income/margin, fully taxable-equivalent (non-GAAP) (5)

$ 1,181,743 $ 1,078,947 3.54 % 3.55 %

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

(4)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.

(5)See Table 18: Supplemental Non-GAAP Financial Measures/Ratios for additional information on this performance measure/ratio.

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

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

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

(9)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.

TABLE 8: 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

Jun 30, 2026 (2.4) % (1.1) % (0.1) % (0.1) %

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)

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

Jun 30, 2026 (0.2) % (0.1) % (0.2) % (0.4) %

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)

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.

TABLE 9: MATURITIES AND SENSITIVITIES TO CHANGES IN INTEREST RATES

Loans repricing or contractual maturity period

As of June 30, 2026 One year or

less From one to

five years From five to fifteen years After fifteen years Total

(In thousands)

Commercial

Fixed rate $ 615,590 $ 4,170,452 $ 2,191,702 $ 53,448 $ 7,031,192

Variable rate 11,248,473 1,646 — — 11,250,119

Total commercial $ 11,864,063 $ 4,172,098 $ 2,191,702 $ 53,448 $ 18,281,311

Commercial real estate

Fixed rate $ 930,512 $ 2,655,051 $ 341,069 $ 70,710 $ 3,997,342

Variable rate 10,262,509 10,692 64 — 10,273,265

Total commercial real estate $ 11,193,021 $ 2,665,743 $ 341,133 $ 70,710 $ 14,270,607

Home equity

Fixed rate $ 8,900 $ 982 $ 29 $ 6 $ 9,917

Variable rate 481,865 — — — 481,865

Total home equity $ 490,765 $ 982 $ 29 $ 6 $ 491,782

Residential real estate

Fixed rate $ 18,332 $ 7,134 $ 63,647 $ 1,042,536 $ 1,131,649

Variable rate 133,698 822,226 2,455,119 — 3,411,043

Total residential real estate $ 152,030 $ 829,360 $ 2,518,766 $ 1,042,536 $ 4,542,692

Premium finance receivables - property & casualty

Fixed rate $ 8,456,306 $ 155,717 $ — $ — $ 8,612,023

Variable rate — — — — —

Total premium finance receivables - property & casualty $ 8,456,306 $ 155,717 $ — $ — $ 8,612,023

Premium finance receivables - life insurance

Fixed rate $ 22,418 $ 82,894 $ — $ — $ 105,312

Variable rate 9,207,209 — — — 9,207,209

Total premium finance receivables - life insurance $ 9,229,627 $ 82,894 $ — $ — $ 9,312,521

Consumer and other

Fixed rate $ 47,737 $ 7,565 $ 1,185 $ 838 $ 57,325

Variable rate 86,686 — — — 86,686

Total consumer and other $ 134,423 $ 7,565 $ 1,185 $ 838 $ 144,011

Total per category

Fixed rate $ 10,099,795 $ 7,079,795 $ 2,597,632 $ 1,167,538 $ 20,944,760

Variable rate 31,420,440 834,564 2,455,183 — 34,710,187

Total loans, net of unearned income $ 41,520,235 $ 7,914,359 $ 5,052,815 $ 1,167,538 $ 55,654,947

Less: Existing cash flow hedging derivatives (1)

(6,900,000)

Total loans repricing or maturing in one year or less, adjusted for cash flow hedging activity $ 34,620,235

Variable Rate Loan Pricing by Index:

SOFR tenors (2)

$ 22,627,412

12- month CMT (3)

8,176,185

Prime 3,125,303

Fed Funds 546,049

Other U.S. Treasury tenors 130,340

Other 104,898

Total variable rate $ 34,710,187

(1)Excludes cash flow hedges with future effective starting dates and those that have matured as of June 30, 2026. The $6.90 billion of cash flow hedging derivatives includes receive fixed swaps, collars and floors of which $5.95 billion were impacting the cash flows of loans indexed to one-month SOFR as of June 30, 2026.

(2)SOFR - Secured Overnight Financing Rate.

(3)CMT - Constant Maturity Treasury Rate.

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 4/30/2026 5/31/2026 6/30/2026

1M SOFR 4.32 4.35 4.27 4.13 4.00 3.86 3.69 3.67 3.67 3.66 3.65 3.62 3.65

12M CMT 3.96 4.10 3.83 3.68 3.70 3.61 3.48 3.48 3.48 3.68 3.72 3.79 3.98

Prime 7.50 7.50 7.50 7.25 7.00 7.00 6.75 6.75 6.75 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 $20.0 billion tied to one-month SOFR and $8.2 billion tied to twelve-month CMT. The above chart shows:

Basis Point (bp) Change in

1-month

SOFR 12- month CMT Prime

Second Quarter 2026 (1) bps 30 bps — bps

First Quarter 2026 (3) 20 —

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

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

Second Quarter 2025 — (7) —

TABLE 10: ALLOWANCE FOR CREDIT LOSSES

Three Months Ended Six Months Ended

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

(Dollars in thousands) 2026 2026 2025 2025 2025 2026 2025

Allowance for credit losses at beginning of period $ 471,591 $ 460,465 $ 454,586 $ 457,461 $ 448,387 $ 460,465 $ 437,060

Provision for credit losses 23,134 29,594 27,588 21,768 22,234 52,728 46,197

Other adjustments (90) (50) 71 (88) 180 (140) 184

Charge-offs:

Commercial 10,837 8,428 12,894 21,597 6,148 19,265 15,870

Commercial real estate 707 7,260 5,625 144 5,711 7,967 6,165

Home equity — — — 27 111 — 111

Residential real estate 163 350 — 26 — 513 —

Premium finance receivables - property & casualty 5,403 7,431 8,354 6,860 6,346 12,834 13,460

Premium finance receivables - life insurance — — — 18 — — 12

Consumer and other 172 180 203 174 179 352 326

Total charge-offs 17,282 23,649 27,076 28,846 18,495 40,931 35,944

Recoveries:

Commercial 1,710 1,419 956 1,449 1,746 3,129 2,675

Commercial real estate 5 6 4 241 10 11 22

Home equity 16 303 28 104 30 319 246

Residential real estate 1 1 1 1 2 2 138

Premium finance receivables - property & casualty 2,076 3,437 4,275 2,459 3,335 5,513 6,822

Premium finance receivables - life insurance — — — — — — —

Consumer and other 28 65 32 37 32 93 61

Total recoveries 3,836 5,231 5,296 4,291 5,155 9,067 9,964

Net charge-offs (13,446) (18,418) (21,780) (24,555) (13,340) (31,864) (25,980)

Allowance for credit losses at period end $ 481,189 $ 471,591 $ 460,465 $ 454,586 $ 457,461 $ 481,189 $ 457,461

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

Commercial 0.20 % 0.17 % 0.29 % 0.49 % 0.11 % 0.19 % 0.17 %

Commercial real estate 0.02 0.21 0.16 (0.00) 0.17 0.11 0.10

Home equity (0.01) (0.26) (0.02) (0.06) 0.07 (0.13) (0.06)

Residential real estate 0.01 0.03 (0.00) 0.00 (0.00) 0.02 (0.01)

Premium finance receivables - property & casualty 0.16 0.20 0.20 0.20 0.16 0.18 0.18

Premium finance receivables - life insurance — — — 0.00 — — 0.00

Consumer and other 0.42 0.35 0.47 0.40 0.44 0.38 0.44

Total loans, net of unearned income 0.10 % 0.14 % 0.17 % 0.19 % 0.11 % 0.12 % 0.11 %

Loans at period end $ 55,654,947 $ 54,071,292 $ 53,105,101 $ 52,063,482 $ 51,041,679

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

Allowance for loan and unfunded lending-related commitment losses as a percentage of loans at period end 0.86 0.87 0.87 0.87 0.90

PCD - Purchase Credit Deteriorated

TABLE 11: ALLOWANCE AND PROVISION FOR CREDIT LOSSES BY COMPONENT

Three Months Ended Six Months Ended

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

(In thousands) 2026 2026 2025 2025 2025 2026 2025

Provision for loan losses - Other $ 25,837 $ 29,836 $ 14,369 $ 19,610 $ 26,607 $ 55,673 $ 53,433

Provision for unfunded lending-related commitments losses - Other (2,666) (239) 13,354 2,160 (4,325) (2,905) (7,177)

Provision for held-to-maturity securities losses (37) (3) (135) (2) (48) (40) (59)

Provision for credit losses $ 23,134 $ 29,594 $ 27,588 $ 21,768 $ 22,234 $ 52,728 $ 46,197

Allowance for loan losses $ 402,952 $ 390,651 $ 379,283 $ 386,622 $ 391,654

Allowance for unfunded lending-related commitments losses 78,017 80,683 80,922 67,569 65,409

Allowance for loan losses and unfunded lending-related commitments losses 480,969 471,334 460,205 454,191 457,063

Allowance for held-to-maturity securities losses 220 257 260 395 398

Allowance for credit losses $ 481,189 $ 471,591 $ 460,465 $ 454,586 $ 457,461

PCD - Purchase Credit Deteriorated

TABLE 12: 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 June 30, 2026, March 31, 2026 and December 31, 2025.

As of Jun 30, 2026 As of Mar 31, 2026 As of Dec 31, 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 $ 18,281,311 $ 234,809 1.28 % $ 17,763,221 $ 210,959 1.19 % $ 17,044,686 $ 178,545 1.05 %

Commercial real estate:

Construction and development 2,655,665 67,343 2.54 2,323,942 74,092 3.19 2,409,582 93,106 3.86

Non-construction 11,614,942 142,605 1.23 11,838,344 150,778 1.27 11,531,154 153,827 1.33

Total commercial real estate $ 14,270,607 $ 209,948 1.47 % $ 14,162,286 $ 224,870 1.59 % $ 13,940,736 $ 246,933 1.77 %

Total commercial and commercial real estate $ 32,551,918 $ 444,757 1.37 % $ 31,925,507 $ 435,829 1.37 % $ 30,985,422 $ 425,478 1.37 %

Home equity 491,782 10,004 2.03 471,264 10,213 2.17 480,525 10,402 2.16

Residential real estate 4,542,692 13,257 0.29 4,465,166 13,081 0.29 4,317,232 12,519 0.29

Premium finance receivables - property & casualty 8,612,023 11,142 0.13 7,890,331 10,591 0.13 8,183,416 10,226 0.12

Premium finance receivables - life insurance 9,312,521 810 0.01 9,196,382 800 0.01 9,023,642 785 0.01

Consumer and other 144,011 999 0.69 122,642 820 0.67 114,864 795 0.69

Total loans, net of unearned income $ 55,654,947 $ 480,969 0.86 % $ 54,071,292 $ 471,334 0.87 % $ 53,105,101 $ 460,205 0.87 %

Total core loans (1)

$ 32,716,938 $ 406,752 1.24 % $ 32,118,691 $ 408,892 1.27 % $ 31,309,210 $ 412,714 1.32 %

Total niche loans (1)

22,938,009 74,217 0.32 21,952,601 62,442 0.28 21,795,891 47,491 0.22

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

TABLE 13: LOAN PORTFOLIO AGING

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

Loan Balances:

Commercial

Nonaccrual $ 90,642 $ 87,750 $ 78,059 $ 66,577 $ 80,877

90+ days and still accruing — — — — —

60-89 days past due 14,851 9,996 22,952 12,190 34,855

30-59 days past due 38,292 90,389 90,205 36,136 45,103

Current 18,137,526 17,575,086 16,853,470 16,429,439 16,226,596

Total commercial $ 18,281,311 $ 17,763,221 $ 17,044,686 $ 16,544,342 $ 16,387,431

Commercial real estate

Nonaccrual $ 17,220 $ 16,757 $ 25,147 $ 28,202 $ 32,828

90+ days and still accruing — — — — —

60-89 days past due 14,879 17,133 19,529 14,119 11,257

30-59 days past due 60,451 54,143 65,601 83,055 51,173

Current 14,178,057 14,074,253 13,830,459 13,493,831 13,196,752

Total commercial real estate $ 14,270,607 $ 14,162,286 $ 13,940,736 $ 13,619,207 $ 13,292,010

Home equity

Nonaccrual $ 1,177 $ 1,142 $ 1,221 $ 1,295 $ 1,780

90+ days and still accruing — — — — —

60-89 days past due 690 463 1,112 246 138

30-59 days past due 878 2,012 2,818 2,294 2,971

Current 489,037 467,647 475,374 480,367 461,926

Total home equity $ 491,782 $ 471,264 $ 480,525 $ 484,202 $ 466,815

Residential real estate

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

$ 131,335 $ 145,225 $ 145,793 $ 124,824 $ 134,067

Nonaccrual 25,910 27,360 32,862 28,942 28,047

90+ days and still accruing — — — — —

60-89 days past due 3,310 129 7,562 8,829 8,954

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

Current 4,382,137 4,261,598 4,106,107 3,981,180 3,777,676

Total residential real estate $ 4,542,692 $ 4,465,166 $ 4,317,232 $ 4,143,870 $ 3,948,782

Premium finance receivables - property & casualty

Nonaccrual $ 28,061 $ 33,891 $ 29,354 $ 24,512 $ 30,404

90+ days and still accruing 16,003 15,823 19,115 13,006 14,350

60-89 days past due 18,198 16,188 29,294 23,527 25,641

30-59 days past due 25,864 47,936 57,685 38,133 29,460

Current 8,523,897 7,776,493 8,047,968 8,267,114 8,223,321

Total Premium finance receivables - property & casualty $ 8,612,023 $ 7,890,331 $ 8,183,416 $ 8,366,292 $ 8,323,176

Premium finance receivables - life insurance

Nonaccrual $ — $ — $ — $ — $ —

90+ days and still accruing — — — — 327

60-89 days past due 2,908 22,690 13,887 34,016 11,202

30-59 days past due 8,606 58,760 22,806 34,506 34,403

Current 9,301,007 9,114,932 8,986,949 8,690,031 8,461,028

Total Premium finance receivables - life insurance $ 9,312,521 $ 9,196,382 $ 9,023,642 $ 8,758,553 $ 8,506,960

Consumer and other

Nonaccrual $ 113 $ 16 $ 8 $ 38 $ 41

90+ days and still accruing 145 10 42 60 184

60-89 days past due 195 130 466 49 61

30-59 days past due 1,253 230 643 159 175

Current 142,305 122,256 113,705 146,710 116,044

Total consumer and other $ 144,011 $ 122,642 $ 114,864 $ 147,016 $ 116,505

Total loans, net of unearned income

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

$ 131,335 $ 145,225 $ 145,793 $ 124,824 $ 134,067

Nonaccrual 163,123 166,916 166,651 149,566 173,977

90+ days and still accruing 16,148 15,833 19,157 13,066 14,861

60-89 days past due 55,031 66,729 94,802 92,976 92,108

30-59 days past due 135,344 284,324 264,666 194,378 163,323

Current 55,153,966 53,392,265 52,414,032 51,488,672 50,463,343

Total loans, net of unearned income $ 55,654,947 $ 54,071,292 $ 53,105,101 $ 52,063,482 $ 51,041,679

(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.

TABLE 14: NON-PERFORMING ASSETS (1)

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

(Dollars in thousands) 2026 2026 2025 2025 2025

Loans past due greater than 90 days and still accruing:

Commercial $ — $ — $ — $ — $ —

Commercial real estate — — — — —

Home equity — — — — —

Residential real estate — — — — —

Premium finance receivables - property & casualty 16,003 15,823 19,115 13,006 14,350

Premium finance receivables - life insurance — — — — 327

Consumer and other 145 10 42 60 184

Total loans past due greater than 90 days and still accruing 16,148 15,833 19,157 13,066 14,861

Non-accrual loans:

Commercial 90,642 87,750 78,059 66,577 80,877

Commercial real estate 17,220 16,757 25,147 28,202 32,828

Home equity 1,177 1,142 1,221 1,295 1,780

Residential real estate 25,910 27,360 32,862 28,942 28,047

Premium finance receivables - property & casualty 28,061 33,891 29,354 24,512 30,404

Premium finance receivables - life insurance — — — — —

Consumer and other 113 16 8 38 41

Total non-accrual loans 163,123 166,916 166,651 149,566 173,977

Total non-performing loans:

Commercial 90,642 87,750 78,059 66,577 80,877

Commercial real estate 17,220 16,757 25,147 28,202 32,828

Home equity 1,177 1,142 1,221 1,295 1,780

Residential real estate 25,910 27,360 32,862 28,942 28,047

Premium finance receivables - property & casualty 44,064 49,714 48,469 37,518 44,754

Premium finance receivables - life insurance — — — — 327

Consumer and other 258 26 50 98 225

Total non-performing loans $ 179,271 $ 182,749 $ 185,808 $ 162,632 $ 188,838

Other real estate owned 15,940 17,439 20,839 24,832 23,615

Total non-performing assets $ 195,211 $ 200,188 $ 206,647 $ 187,464 $ 212,453

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

Commercial 0.50 % 0.49 % 0.46 % 0.40 % 0.49 %

Commercial real estate 0.12 0.12 0.18 0.21 0.25

Home equity 0.24 0.24 0.25 0.27 0.38

Residential real estate 0.57 0.61 0.76 0.70 0.71

Premium finance receivables - property & casualty 0.51 0.63 0.59 0.45 0.54

Premium finance receivables - life insurance — — — — 0.00

Consumer and other 0.18 0.02 0.04 0.07 0.19

Total loans, net of unearned income 0.32 % 0.34 % 0.35 % 0.31 % 0.37 %

Total non-performing assets as a percentage of total assets 0.26 % 0.28 % 0.29 % 0.27 % 0.31 %

Allowance for loan losses and unfunded lending-related commitments losses as a percentage of non-accrual loans 294.85 % 282.38 % 276.15 % 303.67 % 262.71 %

(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.

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

Three Months Ended Six Months Ended

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

(In thousands) 2026 2026 2025 2025 2025 2026 2025

Balance at beginning of period $ 182,749 $ 185,808 $ 162,632 $ 188,838 $ 172,390 $ 185,808 $ 170,823

Additions from becoming non-performing in the respective period 31,070 24,969 46,198 34,805 48,651 56,039 76,372

Return to performing status (1,671) (3,663) (2,937) (3,399) (6,896) (5,334) (8,103)

Payments received (19,503) (13,780) (13,734) (28,052) (5,602) (33,283) (21,567)

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

Charge-offs, net (7,860) (10,930) (16,998) (21,526) (11,734) (18,790) (20,334)

Net change for premium finance receivables (5,514) 1,213 10,933 (7,686) (5,724) (4,301) (6,106)

Balance at end of period $ 179,271 $ 182,749 $ 185,808 $ 162,632 $ 188,838 $ 179,271 $ 188,838

Other Real Estate Owned

Three Months Ended

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

(In thousands) 2026 2026 2025 2025 2025

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

Disposals/resolved (1,499) (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)

Balance at end of period $ 15,940 $ 17,439 $ 20,839 $ 24,832 $ 23,615

Period End

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

Balance by Property Type: 2026 2026 2025 2025 2025

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

Commercial real estate 15,940 17,439 20,839 24,832 23,615

Total $ 15,940 $ 17,439 $ 20,839 $ 24,832 $ 23,615

TABLE 15: NON-INTEREST INCOME

Three Months Ended

Q2 2026 compared to

Q1 2026

Q2 2026 compared to

Q2 2025

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

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

Brokerage $ 4,985 $ 5,301 $ 5,384 $ 4,426 $ 4,212 $ (316) (6) % $ 773 18 %

Trust and asset management 34,898 36,758 33,981 32,762 32,609 (1,860) (5) 2,289 7

Total wealth management 39,883 42,059 39,365 37,188 36,821 (2,176) (5) 3,062 8

Mortgage banking 27,438 23,396 22,625 24,451 23,170 4,042 17 4,268 18

Service charges on deposit accounts 21,240 20,970 20,402 19,825 19,502 270 1 1,738 9

Gains (losses) on investment securities, net 1,845 (31) 1,505 2,972 650 1,876 NM 1,195 NM

Fees from covered call options 4,793 4,669 5,992 5,619 5,624 124 3 (831) (15)

Trading gains (losses), net 70 10 (257) 172 151 60 NM (81) (54)

Operating lease income, net 18,804 19,154 16,365 15,466 15,166 (350) (2) 3,638 24

Other:

Interest rate swap fees 3,117 4,041 4,664 3,909 3,010 (924) (23) 107 4

BOLI 3,216 948 1,915 1,591 2,257 2,268 NM 959 42

Administrative services 1,341 1,243 1,352 1,240 1,315 98 8 26 2

Foreign currency remeasurement gains (losses) 253 (368) 322 (416) 658 621 NM (405) (62)

Changes in fair value on EBOs and loans held-for-investment (373) (287) (1,702) 1,452 172 (86) (30) (545) NM

Early pay-offs of capital leases 1,054 1,198 581 519 400 (144) (12) 654 NM

Miscellaneous 18,588 17,140 17,261 16,839 15,193 1,448 8 3,395 22

Total Other 27,196 23,915 24,393 25,134 23,005 3,281 14 4,191 18

Total Non-Interest Income $ 141,269 $ 134,142 $ 130,390 $ 130,827 $ 124,089 $ 7,127 5 % $ 17,180 14 %

Six Months Ended

2026 compared to 2025

Jun 30, Jun 30,

(Dollars in thousands) 2026 2025 $ Change % Change

Brokerage $ 10,286 $ 8,969 $ 1,317 15 %

Trust and asset management 71,656 61,894 9,762 16

Total wealth management 81,942 70,863 11,079 16

Mortgage banking 50,834 43,699 7,135 16

Service charges on deposit accounts 42,210 38,864 3,346 9

Gains on investment securities, net 1,814 3,846 (2,032) (53)

Fees from covered call options 9,462 9,070 392 4

Trading gains, net 80 87 (7) (8)

Operating lease income, net 37,958 30,453 7,505 25

Other:

Interest rate swap fees 7,158 5,279 1,879 36

BOLI 4,164 3,053 1,111 36

Administrative services 2,584 2,708 (124) (5)

Foreign currency remeasurement (losses) gains (115) 475 (590) NM

Changes in fair value on EBOs and loans held-for-investment (660) 555 (1,215) NM

Early pay-offs of capital leases 2,252 1,168 1,084 93

Miscellaneous 35,728 30,603 5,125 17

Total Other 51,111 43,841 7,270 17

Total Non-Interest Income $ 275,411 $ 240,723 $ 34,688 14 %

NM - Not meaningful.

BOLI - Bank-owned life insurance.

EBO - Early buy-out.

TABLE 16: MORTGAGE BANKING

Three Months Ended

(Dollars in thousands) Jun 30,

2026 Mar 31,

2026 Dec 31,

2025 Sep 30,

2025 Jun 30,

2025

Originations:

Retail originations $ 660,325 $ 441,749 $ 589,139 $ 505,793 $ 523,759

Veterans First originations 174,644 152,244 208,054 137,600 157,787

Total originations for sale (A) $ 834,969 $ 593,993 $ 797,193 $ 643,393 $ 681,546

Originations for investment 315,487 371,540 364,988 351,012 422,926

Total originations $ 1,150,456 $ 965,533 $ 1,162,181 $ 994,405 $ 1,104,472

As a percentage of originations for sale:

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

Veterans First originations 21 26 26 21 23

Purchases 74 % 52 % 52 % 77 % 74 %

Refinances 26 48 48 23 26

Production Margin:

Production revenue (B) (1)

$ 13,150 $ 13,028 $ 10,878 $ 15,388 $ 13,380

Total originations for sale (A) $ 834,969 $ 593,993 $ 797,193 $ 643,393 $ 681,546

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

171,656 218,156 122,804 307,932 163,664

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

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

Total mortgage production volume (C) $ 788,469 $ 689,345 $ 612,065 $ 787,661 $ 647,913

Production margin (B / C) 1.67 % 1.89 % 1.78 % 1.95 % 2.07 %

Mortgage Servicing:

Loans serviced for others (D) $ 12,669,679 $ 12,534,513 $ 12,608,694 $ 12,524,131 $ 12,470,924

Mortgage Servicing Rights (“MSR”), at fair value (E) 201,903 195,276 195,023 190,938 193,061

Percentage of MSRs to loans serviced for others (E / D) 1.59 % 1.56 % 1.55 % 1.52 % 1.55 %

Servicing income $ 10,724 $ 10,353 $ 10,185 $ 10,112 $ 10,520

MSR Fair Value Asset Activity

MSR - FV at Beginning of Period $ 195,276 $ 195,023 $ 190,938 $ 193,061 $ 196,307

MSR - current period capitalization 8,745 6,434 9,150 5,829 6,336

MSR - collection of expected cash flows - paydowns (1,684) (1,620) (1,550) (1,554) (1,516)

MSR - collection of expected cash flows - payoffs and repurchases (4,815) (5,021) (6,250) (4,050) (4,100)

MSR - changes in fair value model assumptions 4,381 460 2,735 (2,348) (3,966)

MSR Fair Value at end of period $ 201,903 $ 195,276 $ 195,023 $ 190,938 $ 193,061

Summary of Mortgage Banking Revenue:

Operational:

Production revenue (1)

$ 13,150 $ 13,028 $ 10,878 $ 15,388 $ 13,380

MSR - Current period capitalization 8,745 6,434 9,150 5,829 6,336

MSR - Collection of expected cash flows - paydowns (1,684) (1,620) (1,550) (1,554) (1,516)

MSR - Collection of expected cash flows - payoffs and repurchases (4,815) (5,021) (6,250) (4,050) (4,100)

Servicing Income 10,724 10,353 10,185 10,112 10,520

Other Revenue 72 (45) (17) (345) (79)

Total operational mortgage banking revenue $ 26,192 $ 23,129 $ 22,396 $ 25,380 $ 24,541

Fair Value:

MSR - changes in fair value model assumptions $ 4,381 $ 460 $ 2,735 $ (2,348) $ (3,966)

(Loss) gain on derivative contract held as an economic hedge, net (3,396) (900) (2,425) 265 2,535

Changes in FV on early buy-out loans guaranteed by US Govt held-for-sale 261 707 (81) 1,154 60

Total fair value mortgage banking revenue $ 1,246 $ 267 $ 229 $ (929) $ (1,371)

Total mortgage banking revenue $ 27,438 $ 23,396 $ 22,625 $ 24,451 $ 23,170

(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.

Six Months Ended

(Dollars in thousands) Jun 30,

2026 Jun 30,

2025

Originations:

Retail originations $ 1,102,074 $ 872,227

Veterans First originations 326,888 269,772

Total originations for sale (A) $ 1,428,962 $ 1,141,999

Originations for investment 687,027 640,103

Total originations $ 2,115,989 $ 1,782,102

As a percentage of originations for sale:

Retail originations 77 % 76 %

Veterans First originations 23 24

Purchases 65 % 75 %

Refinances 35 25

Production Margin:

Production revenue (B) (1)

$ 26,178 $ 23,321

Total originations for sale (A) $ 1,428,962 $ 1,141,999

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

171,656 163,664

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

122,804 103,946

Total mortgage production volume (C) $ 1,477,814 $ 1,201,717

Production margin (B / C) 1.77 % 1.94 %

Mortgage Servicing:

Loans serviced for others (D) $ 12,669,679 $ 12,470,924

MSRs, at fair value (E) 201,903 193,061

Percentage of MSRs to loans serviced for others (E / D) 1.59 % 1.55 %

Servicing income $ 21,077 $ 21,131

MSR Fair Value Asset Activity

MSR - FV at Beginning of Period $ 195,023 $ 203,788

MSR - current period capitalization 15,179 11,005

MSR - collection of expected cash flows - paydowns (3,304) (3,106)

MSR - collection of expected cash flows - payoffs and repurchases (9,836) (7,146)

MSR - changes in fair value model assumptions 4,841 (11,480)

MSR Fair Value at end of period $ 201,903 $ 193,061

Summary of Mortgage Banking Revenue:

Operational:

Production revenue (1)

$ 26,178 $ 23,321

MSR - Current period capitalization 15,179 11,005

MSR - Collection of expected cash flows - paydowns (3,304) (3,106)

MSR - Collection of expected cash flows - payoffs and repurchases (9,836) (7,146)

Servicing Income 21,077 21,131

Other Revenue 27 (251)

Total operational mortgage banking revenue $ 49,321 $ 44,954

Fair Value:

MSR - changes in fair value model assumptions $ 4,841 $ (11,480)

(Loss) gain on derivative contract held as an economic hedge, net (4,296) 7,432

Changes in FV on early buy-out loans guaranteed by US Govt held-for-sale 968 2,793

Total fair value mortgage banking revenue $ 1,513 $ (1,255)

Total mortgage banking revenue $ 50,834 $ 43,699

(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.

TABLE 17: NON-INTEREST EXPENSE

Three Months Ended

Q2 2026 compared to

Q1 2026

Q2 2026 compared to

Q2 2025

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

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

Salaries and employee benefits:

Salaries $ 129,875 $ 129,086 $ 124,856 $ 124,623 $ 123,174 $ 789 1 % $ 6,701 5 %

Commissions and incentive compensation 62,463 57,407 57,117 56,244 55,871 5,056 9 6,592 12

Benefits 41,751 41,954 40,584 38,801 40,496 (203) — 1,255 3

Total salaries and employee benefits 234,089 228,447 222,557 219,668 219,541 5,642 2 14,548 7

Software and equipment 39,288 35,654 36,096 35,027 36,522 3,634 10 2,766 8

Operating lease equipment 11,187 10,987 11,034 10,409 10,757 200 2 430 4

Occupancy, net 21,153 20,566 20,105 20,809 20,228 587 3 925 5

Data processing 10,659 11,266 11,809 11,329 12,110 (607) (5) (1,451) (12)

Advertising and marketing 20,432 13,218 13,792 19,027 18,761 7,214 55 1,671 9

Professional fees 9,342 7,375 8,280 7,465 9,243 1,967 27 99 1

Amortization of other acquisition-related intangible assets 4,921 4,958 4,999 5,196 5,580 (37) (1) (659) (12)

FDIC insurance 11,796 10,990 11,061 11,418 10,971 806 7 825 8

FDIC insurance - special assessment (5,156) — (499) — — (5,156) (100) (5,156) (100)

OREO expense, net 786 207 2,162 262 505 579 NM 281 56

Other:

Lending expenses, net of deferred origination costs 6,165 6,510 6,367 6,169 4,869 (345) (5) 1,296 27

Travel and entertainment 6,938 5,426 7,965 6,029 6,026 1,512 28 912 15

Miscellaneous 25,937 27,028 28,725 27,220 26,348 (1,091) (4) (411) (2)

Total other 39,040 38,964 43,057 39,418 37,243 76 — 1,797 5

Total Non-Interest Expense $ 397,537 $ 382,632 $ 384,453 $ 380,028 $ 381,461 $ 14,905 4 % $ 16,076 4 %

Six Months Ended

2026 compared to 2025

Jun 30, Jun 30,

(Dollars in thousands) 2026 2025 $ Change % Change

Salaries and employee benefits:

Salaries $ 258,961 $ 247,091 $ 11,870 5 %

Commissions and incentive compensation 119,870 108,407 11,463 11

Benefits 83,705 75,569 8,136 11

Total salaries and employee benefits 462,536 431,067 31,469 7

Software and equipment 74,942 71,239 3,703 5

Operating lease equipment 22,174 21,228 946 4

Occupancy, net 41,719 41,006 713 2

Data processing 21,925 23,384 (1,459) (6)

Advertising and marketing 33,650 31,033 2,617 8

Professional fees 16,717 18,287 (1,570) (9)

Amortization of other acquisition-related intangible assets 9,879 11,198 (1,319) (12)

FDIC insurance 22,786 21,897 889 4

FDIC insurance - special assessment (5,156) — (5,156) (100)

OREO expense, net 993 1,148 (155) (14)

Other:

Lending expenses, net of deferred origination costs 12,675 10,735 1,940 18

Travel and entertainment 12,364 11,296 1,068 9

Miscellaneous 52,965 54,033 (1,068) (2)

Total other 78,004 76,064 1,940 3

Total Non-Interest Expense $ 780,169 $ 747,551 $ 32,618 4 %

NM - Not meaningful.

TABLE 18: 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 Six Months Ended

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

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

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

(A) Interest Income (GAAP) $ 961,412 $ 927,560 $ 956,326 $ 963,834 $ 920,908 $ 1,888,972 $ 1,807,873

Taxable-equivalent adjustment:

- Loans

2,111 2,026 2,134 2,154 2,200 4,137 4,406

- Liquidity Management Assets 630 586 661 675 680 1,216 1,370

- Other Earning Assets — — — — — — 3

(B) Interest Income (non-GAAP) $ 964,153 $ 930,172 $ 959,121 $ 966,663 $ 923,788 $ 1,894,325 $ 1,813,652

(D) Net Interest Income (GAAP) (A minus C) 597,366 579,024 583,874 567,010 546,694 1,176,390 1,073,168

(E) Net Interest Income (non-GAAP) (B minus C) 600,107 581,636 586,669 569,839 549,574 1,181,743 1,078,947

Net interest margin (GAAP) 3.50 % 3.54 % 3.52 % 3.48 % 3.52 % 3.52 % 3.53 %

Net interest margin, fully taxable-equivalent (non-GAAP) 3.52 3.56 3.54 3.50 3.54 3.54 3.55

(F) Non-interest income $ 141,269 $ 134,142 $ 130,390 $ 130,827 $ 124,089 $ 275,411 $ 240,723

(G) Gains (losses) on investment securities, net 1,845 (31) 1,505 2,972 650 1,814 3,846

(H) Non-interest expense 397,537 382,632 384,453 380,028 381,461 780,169 747,551

Efficiency ratio (H/(D+F-G)) 53.96 % 53.65 % 53.94 % 54.69 % 56.92 % 53.81 % 57.06 %

Efficiency ratio (non-GAAP) (H/(E+F-G)) 53.76 53.45 53.73 54.47 56.68 53.61 56.81

Three Months Ended Six Months Ended

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

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

Reconciliation of Non-GAAP Tangible Common Equity Ratio:

Total shareholders’ equity (GAAP) $ 7,525,116 $ 7,378,100 $ 7,258,715 $ 7,045,757 $ 7,225,696

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

Less: Acquisition-related intangible assets (GAAP) (885,338) (890,698) (895,959) (902,936) (908,639)

(I) Total tangible common shareholders’ equity (non-GAAP) $ 6,214,778 $ 6,062,402 $ 5,937,756 $ 5,717,821 $ 5,479,557

(J) Total assets (GAAP) $ 74,668,135 $ 72,157,433 $ 71,142,046 $ 69,629,638 $ 68,983,318

Less: Acquisition-related intangible assets (GAAP) (885,338) (890,698) (895,959) (902,936) (908,639)

(K) Total tangible assets (non-GAAP) $ 73,782,797 $ 71,266,735 $ 70,246,087 $ 68,726,702 $ 68,074,679

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

Tangible common equity ratio (non-GAAP) (I/K) 8.4 8.5 8.5 8.3 8.0

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

Total shareholders’ equity $ 7,525,116 $ 7,378,100 $ 7,258,715 $ 7,045,757 $ 7,225,696

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

(L) Total common equity $ 7,100,116 $ 6,953,100 $ 6,833,715 $ 6,620,757 $ 6,388,196

(M) Actual common shares outstanding 67,455 67,437 66,975 66,961 66,938

Book value per common share (L/M) $ 105.26 $ 103.10 $ 102.03 $ 98.87 $ 95.43

Tangible book value per common share (non-GAAP) (I/M) 92.13 89.90 88.66 85.39 81.86

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

(N) Net income applicable to common shares $ 225,326 $ 219,021 $ 214,657 $ 188,913 $ 188,536 $ 444,347 $ 370,584

Add: Acquisition-related intangible asset amortization 4,921 4,958 4,999 5,196 5,580 9,879 11,198

Less: Tax effect of acquisition-related intangible asset amortization (1,304) (1,210) (1,310) (1,403) (1,495) (2,519) (2,923)

After-tax Acquisition-related intangible asset amortization $ 3,617 $ 3,748 $ 3,689 $ 3,793 $ 4,085 $ 7,360 $ 8,275

(O) Tangible net income applicable to common shares (non-GAAP) $ 228,943 $ 222,769 $ 218,346 $ 192,706 $ 192,621 $ 451,707 $ 378,859

Total average shareholders’ equity $ 7,474,449 $ 7,387,713 $ 7,166,608 $ 6,955,543 $ 6,862,040 $ 7,431,321 $ 6,662,598

Less: Average preferred stock (425,000) (425,000) (425,000) (483,288) (599,313) (425,000) (506,423)

(P) Total average common shareholders’ equity $ 7,049,449 $ 6,962,713 $ 6,741,608 $ 6,472,255 $ 6,262,727 $ 7,006,321 $ 6,156,175

Less: Average acquisition-related intangible assets (889,059) (894,211) (901,022) (906,032) (910,924) (891,620) (913,483)

(Q) Total average tangible common shareholders’ equity (non-GAAP) $ 6,160,390 $ 6,068,502 $ 5,840,586 $ 5,566,223 $ 5,351,803 $ 6,114,701 $ 5,242,692

Return on average common equity, annualized (N/P) 12.82 % 12.76 % 12.63 % 11.58 % 12.07 % 12.79 % 12.14 %

Return on average tangible common equity, annualized (non-GAAP) (O/Q) 14.91 14.89 14.83 13.74 14.44 14.90 14.57

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

Income before taxes $ 317,964 $ 300,940 $ 302,223 $ 296,041 $ 267,088 $ 618,904 $ 520,143

Add: Provision for credit losses 23,134 29,594 27,588 21,768 22,234 52,728 46,197

Pre-tax income, excluding provision for credit losses (non-GAAP) $ 341,098 $ 330,534 $ 329,811 $ 317,809 $ 289,322 $ 671,632 $ 566,340

Three Months Ended Six Months Ended

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

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

Reconciliation of Non-GAAP Net Income per Common Share:

Net income $ 233,693 $ 227,388 $ 223,024 $ 216,254 $ 195,527 $ 461,081 $ 384,566

Preferred stock dividends 8,367 8,367 8,367 13,295 6,991 16,734 13,982

Preferred stock redemption — — — 14,046 — — —

(R) Net income applicable to common shares $ 225,326 $ 219,021 $ 214,657 $ 188,913 $ 188,536 $ 444,347 $ 370,584

(S) Weighted average common shares outstanding 67,434 67,246 66,970 66,952 66,931 67,341 66,829

Dilutive potential common shares 852 851 1,143 1,028 888 852 903

(T) Average common shares and dilutive common shares 68,286 68,097 68,113 67,980 67,819 68,193 67,732

Net income per common share - Basic (R/S) $ 3.34 $ 3.26 $ 3.21 $ 2.82 $ 2.82 $ 6.60 $ 5.55

Net income per common share - Diluted (R/T) $ 3.30 $ 3.22 $ 3.15 $ 2.78 $ 2.78 $ 6.52 $ 5.47

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 $ 3.34 $ 3.26 $ 3.21 $ 3.11 $ 2.82 $ 6.60 $ 5.55

Net income per common share - Diluted (non-GAAP) (R+U)/T $ 3.30 $ 3.22 $ 3.15 $ 3.06 $ 2.78 $ 6.52 $ 5.47

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 Securities and Exchange Commission 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 and uncertainties, 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, 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;

•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 any forward-looking statement. 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, July 21, 2026 at 10:00 a.m. (CDT) regarding second quarter and year-to-date 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 June 30, 2026 available at the Investor Relations, News and Events, News 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, News and Events, Events and Presentations link. The text of the second quarter and year-to-date 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, News and Events, News link on its website.

EX-99.2

Filename: earningsrelease2026-q2fi.htm · Sequence: 3

earningsrelease2026-q2fi

Earnings Release Presentation Q2 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 Securities and Exchange Commission 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 and uncertainties, 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); Pending

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 any 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. Pending

ORGANIZATION NAME 4 • Record net income of $461.1 million or $6.52 per diluted common share, for the first six months of 2026, compared to net income of $384.6 million, or $5.47 per diluted common share for the same period of 2025 • Record June 2026 year-to-date net interest income of $1.2 billion was driven by strong earning asset growth • Wintrust's tangible book value per common share (non-GAAP) increased to $92.13 as of June 30, 2026. Tangible book value per common share (non-GAAP) has increased every year since Wintrust became a public company in 1996 • Total deposits increased by approximately $5.3 billion, or 10% compared to June 30, 2025, and was driven by our diversified deposit product offerings Pre-Tax, Pre-Provision1 June 2026 Year-to-Date Highlights (Comparative to June 2025 Year-to-Date) Total DepositsTotal Assets Total Loans Net Income $74.7 billion +$5.7 billion or 8% $55.7 billion +$4.6 billion or 9% $61.1 billion +$5.3 billion or 10% $461.1 million +$76.5 million or 20% BV / TBV Net Interest Income Net Interest Margin $1.2 billion +$103.2 million or 10% (non-GAAP) $92.13 +$10.27 $671.6 million +$105.3 million or 19% Diluted EPS $6.52 +$1.05 or 19% June 2026 Year-to-Date Takeaways 1 Pre-tax income, excluding provision for credit losses (non-GAAP) – See non-GAAP reconciliation in the Appendix (GAAP) $105.26 +$9.83 (non-GAAP) 3.54% -1 bp (GAAP) 3.52% -1 bp

ORGANIZATION NAME 5 Q2 2026 Highlights (Comparative to Q1 2026) • Record quarterly net income of $233.7 million • Q2 2026 net interest margin (non-GAAP) of 3.52% was four basis points lower than the prior quarter and remains within our expected range • Total loans increased by approximately $1.6 billion, or 12% annualized, and was driven by growth across all major loan categories, including seasonally higher PFR - Property and Casualty Insurance • Total deposits increased by approximately $2.2 billion, or 15% annualized, and was driven by our diversified customer base and product offerings Pre-Tax, Pre-Provision1 Diversified Balance Sheet Total DepositsTotal Assets Total Loans Net Income $74.7 billion +$2.5 billion $55.7 billion +$1.6 billion $61.1 billion +$2.2 billion $233.7 million +$6.3 million Strong Credit Quality • Non-performing loans totaled $179.3 million and comprised 0.32% of total loans at June 30, 2026 • Allowance for credit losses on total core loans was 1.24% at June 30, 2026 • Net charge-offs of 10 basis points in the second quarter of 2026, compared to 14 basis points in the first quarter of 2026 Efficiency RatioReturn on Assets ROE / ROTCE 1.30% -2 bps (GAAP) 53.96% +31 bps $341.1 million +$10.6 million Diluted EPS $3.30 +$0.08 Stable Margin Supports Earnings (non-GAAP) 53.76% +31 bps (GAAP) 12.82% +6 bps (non-GAAP) 14.91% +2 bps 1 Pre-tax income, excluding provision for credit losses (non-GAAP) – See non-GAAP reconciliation in the Appendix

ORGANIZATION NAME 6 $195.5 $227.4 $233.7 1.19% 1.32% 1.30% Net Income ROA Q2 2025 Q1 2026 Q2 2026 Record Quarterly Net Income $2.78 $3.22 $3.30 Diluted EPS Q2 2025 Q1 2026 Q2 2026 $289.3 $330.5 $341.1 Pre-Tax Income, excluding Provision for Credit Losses (non-GAAP) Q2 2025 Q1 2026 Q2 2026 ($ in Millions) Q2 2026 Highlights Earnings Summary Differentiated, highly diversified and sustainable business model • Record quarterly net income of $233.7 million supported by strong loan and deposit growth and a stable net interest margin • Q2 2026 pre-tax income, excluding provision for credit losses (non- GAAP) totaled $341.1 million as compared to $330.5 million in the first quarter of 2026, a record for the Company Record Quarterly Pre-Tax Income, Excluding Provision for Credit Losses ($ in Millions) Consistent Earnings Growth

ORGANIZATION NAME 7 • Loan growth during the second quarter totaled $1.6 billion, or 12% on an annualized basis • Strong loan growth driven by increases across all major categories, including seasonally higher PFR - Property and Casualty Insurance • Year-over-year loan growth of 9% 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 $54,071 $518 $108 $78 $722 $116 $42 $55,655 3/31/2026 Commercial Commercial Real Estate Residential Real Estate PFR - Property and Casualty Insurance PFR - Life Insurance All Other Loans 6/30/2026 $51.0 $54.1 $55.7 6.48% 6.14% 6.07% Total Loans Average Total Loan Yield 6/30/2025 3/31/2026 6/30/2026 Loan Growth Across All Major Loan Categories ($ in Millions) Diversified Loan Mix (as of 6/30/2026) Robust Organic Loan Growth in the Second Quarter ($ in Billions) Loan Portfolio Diversified loan portfolio drives consistent growth Highlights

ORGANIZATION NAME 8 $55.8 $58.9 $61.1 3.14% 2.74% 2.74% Total Deposits Rate Paid on Average Total Interest-Bearing Deposits 6/30/2025 3/31/2026 6/30/2026 $58,914 $(316) $1,369 $1,085 $755 $(666) $61,141 3/31/2026 Non- Interest- Bearing Money Market CDs NOW and Interest- Bearing Demand Deposits Other Interest- Bearing 6/30/2026 Deposit Portfolio Enviable core deposit franchise in Chicago, Milwaukee and Grand Rapids market areas Strong Deposit Growth in the Second Quarter • Second quarter deposit growth totaling $2.2 billion or 15% annualized • Year-over-year deposit growth of $5.3 billion, or 10%, was supported by strong organic growth and market share gains in our key markets • Growth across a wide range of deposit products highlights our strong deposit franchise Highlights ($ in Millions) ($ in Billions) Quarterly Growth Primarily from Money Market Products and CDs 1 Includes Savings and Wealth Management Deposits which represent 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. 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% 3.75%3.73% 3.72% 3.39% 3.16% 3.14% 3.15% 2.90% 2.74% 2.74% 2.93% 2.94% 2.68% 2.51% 2.51% 2.54% 2.33% 2.21% 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 6/30/2026 Deposit Betas Interest-Bearing Deposit Beta: 57% Total Deposit Beta: 41% Strategically Repriced Deposits Throughout the Fed Easing Cycle

ORGANIZATION NAME 9 $7.6 $3.2 $0.1 Available-for-Sale Held-to-Maturity Other Continued Year-over-Year Growth in CET1Stable Capital Levels Strategically Balanced Investment Portfolio (as of 6/30/2026) ($ in Billions) Capital/Liquidity Capital levels are well in excess of regulatory thresholds 10.0% 10.4% 10.4% 6/30/2025 3/31/2026 6/30/2026 10.0% 10.4% 10.4% 11.5% 11.1% 11.1% 13.0% 12.6% 12.4% 10.2% 9.8% 9.8% CET1 Ratio Tier 1 Capital Ratio Total Capital Ratio Tier 1 Leverage Ratio 6/30/2025 3/31/2026 6/30/2026 Total Investment Portfolio Yield (Q2 '26): 3.94% Duration: 5.8 Years $10.9 Highlights 1Ratios for Q2 2026 are estimated 2Q2 2025 capital levels impacted by Preferred Series D and E not redeemed until Q3 2025 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 June 30, 2026 Pending 222

ORGANIZATION NAME 10 $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 $92.13 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 6/30 /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 $92.13 as of June 30, 2026

ORGANIZATION NAME 11 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% 131% 129% WTFC KRXTR 6/30 /20 25 6/30 /20 26 80% 100% 120% 140% Total Shareholder Return of WTFC Compared to KRXTR (3-Year) 100% 138% 176% 229% 118% 143% 185% WTFC KRXTR 6/30 /20 23 6/30 /20 24 6/30 /20 25 6/30 /20 26 50% 100% 150% 200% 250% Total Shareholder Return of WTFC Compared to KRXTR (5-Year) 100% 108% 100% 136% 172% 223% 92% 77% 91% 110% 142% WTFC KRXTR 6/30 /20 21 6/30 /20 22 6/30 /20 23 6/30 /20 24 6/30 /20 25 6/30 /20 26 0% 50% 100% 150% 200% 250% 300% Total Shareholder Return of WTFC Compared to KRXTR (10-Year) 100% 151% 173% 147% 91% 156% 168% 156% 210% 263% 339% 136% 149% 134% 100% 171% 157% 131% 155% 187% 242% WTFC KRXTR 6/30 /20 16 6/30 /20 17 6/30 /20 18 6/30 /20 19 6/30 /20 20 6/30 /20 21 6/30 /20 22 6/30 /20 23 6/30 /20 24 6/30 /20 25 6/30 /20 26 50% 100% 150% 200% 250% 300% 350% * Data Source: S&P Capital IQ

ORGANIZATION NAME 12 As of June 30, 2026 • Collars Weighted Average Cap Rate: 3.70% • Collars Weighted Average Floor Rate: 2.21% • Receive Fixed Swaps Weighted Average Rate: 3.84% • Interest Rate Floor Weighted Average Strike Rate: 2.50% $6.90 $6.65 $5.85 $6.05 $6.05 $4.70 $4.45 $4.15 $4.35 $4.35 $1.75 $1.75 $1.25 $1.25 $1.25 $0.45 $0.45 $0.45 $0.45 $0.45 Received Fixed Swaps Costless Collars Interest Rate Floor 6/30/2026 9/30/2026 12/31/2026 3/31/2027 6/30/2027 $546.7 $579.0 $597.4 3.54% 3.56% 3.52% Net Interest Income NIM, fully taxable-equivalent (non-GAAP) 6/30/2025 3/31/2026 6/30/2026 Net Interest Margin/Income Net interest margin within guidance range; coupled with strong earning asset growth generated net interest income growth Record Net Interest Income in Q2 2026 Derivatives Held by the Company as of June 30, 2026 that Hedge the Cash Flows of Variable Rate Loans1 ($ 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 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 believe 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 Pending

ORGANIZATION NAME 13 $36.8 $42.1 $39.9 $44.3 $45.9 $49.7 Total Wealth Management Revenue Client Assets Under Administration ($ in billions) Q2 2025 Q1 2026 Q2 2026 Non-Interest Income Diversified fee businesses supported growth in non-interest income levels despite challenging mortgage environment Wealth Management Revenue Improvement Year-Over-Year $124.1 $134.1 $141.3 $36.8 $42.1 $39.9 $15.2 $19.2 $18.8 $19.5 $21.0 $21.2 $29.4 $28.4 $34.0 $23.2 $23.4 $27.4 Wealth Management Operating Lease Income, net Service Charges on Deposits Other ; incl. Call Option Income Mortgage Banking Q2 2025 Q1 2026 Q2 2026 $681.5 $594.0 $834.9 $523.8 $441.7 $660.3 $157.7 $152.3 $174.6 Retail Originations Veterans First Originations Q2 2025 Q1 2026 Q2 2026 Increase in Mortgage Originations for Sale Driven by Stronger Production Volume Amid Improved Market Activity MSRs Effectively Hedged to Moderate Impact to Fair Value Year-over-Year Increase Across All Major Categories 1 ($ in Millions) ($ in Millions) % of MSRs to Loans Serviced for Others Q2 2025 Q1 2026 Q2 2026 1.55% 1.56% 1.59% $193.1 $195.3 $201.9 $12,471 $12,535 $12,670 MSRs, at fair value Loans Serviced for Others Q2 2025 Q1 2026 Q2 2026 ($ 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 Pending

ORGANIZATION NAME 14 • The Non-interest expense totaled $397.5 million in the second quarter of 2026, increasing $14.9 million, compared to $382.6 million in the first quarter of 2026 • The increase was attributable to seasonally higher advertising and marketing expenses, and higher commissions and incentives expense, partially offset by the reversal of FDIC special assessment • Non-interest expense totaled $397.5 million in the second quarter of 2026, decreasing $1.9 million, compared to $382.6 million in the first quarter of 2026 • 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 Quarterly Increase Primarily Driven by Commissions and Incentives Efficiency Ratio Remained Consistent Quarter-Over-Quarter Strong Asset Growth Coupled With Prudent Expense Management $219.5 $228.5 $234.1 $123.2 $129.1 $129.9 $55.9 $57.4 $62.4 $40.5 $42.0 $41.8 Salaries Commissions and Incentive Compensation Benefits Q2 2025 Q1 2026 Q2 2026 56.68% 53.45% 53.76% Efficiency Ratio (non-GAAP) Q2 2025 Q1 2026 Q2 2026 $45.1 $50.1 $52.9 $56.3 $64.9 $71.1 $74.7 2.51% 2.42% 2.33% 2.45% 2.36% 2.26% 2.21% Total Assets Non-Interest Expense as a % of Average Assets FY 2020 FY 2021 FY 2022 FY 2023 FY 2024 FY 2025 6/30/2026 ($ in Millions) ($ in Billions) Highlights

ORGANIZATION NAME 15 $471.6 $10.0 $(0.4) $481.2 3/31/2026 Portfolio Changes Macroeconomic Scenario 6/30/2026 $13.3 $18.4 $13.4 $22.2 $29.6 $23.1 0.11% 0.14% 0.10% NCOs Provision for Credit Losses Annualized NCOs as a % of Average Total Loans Q2 2025 Q1 2026 Q2 2026 $188.8 $182.7 $179.3 $143.7 $133.0 $135.2 $45.1 $49.7 $44.1 0.37% 0.34% 0.32% NPLs as a % of Total Loans PFR - Life and Commercial NPLs Commercial, CRE and Other NPLs 6/30/2025 3/31/2026 6/30/2026 $52,479 $53,961 Q1 2026 Q2 2026 $959 $1,034 Q1 2026 Q2 2026 $633 $660 Q1 2026 Q2 2026 Pass and Loans Guaranteed1 Special Mention Substandard2 1 Pass and Loans Guaranteed: Includes early buy-out loans guaranteed by U.S. government agencies 2 Substandard: Substandard includes Substandard Accrual and Substandard Nonaccrual/Doubtful 97% 97% 2% 2% 1% 1% Credit Quality Diversified business lines and strong credit management support stable credit quality Low and Consistent Levels of Non-Performing Loans ($ in Millions) ($ in Millions) Special Mention and Substandard Percentages Remained Stable 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, shifts in segmentation mix, impact of net charge-offs, and changes in qualitative factors 3 Provision Remains Stable Pending Pending

ORGANIZATION NAME 16 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% 0.26% 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 6/30 /20 26 1Q2 2024 is a Preliminary Number Non-Performing Assets to Total Assets NPAs continue to remain historically lowCurrent Quarter is hardcoded due to format

ORGANIZATION NAME 17 • Increase in allowance for credit losses driven by portfolio changes, primarily due to changes in credit quality and new volume • Coverage across all portfolios remains stable to protect against downside risks in an uncertain macroeconomic environment Prior Year is not included in the spreadsheet. The Prior Year for All charts are Hardcoded $51.0 $54.1 $55.7 0.90% 0.87% 0.86% Total Loan Period End Balance Allowance as a % of Total Loans 6/30/2025 3/31/2026 6/30/2026 $29.9 $32.1 $32.7 1.37% 1.27% 1.24% Core Loan Period End Balance Allowance as a % of Category 6/30/2025 3/31/2026 6/30/2026 $21.1 $22.0 $22.9 0.22% 0.28% 0.32% Niche Loan Period End Balance Allowance as a % of Category 6/30/2025 3/31/2026 6/30/2026 Credit Quality - Allowance for Credit Losses The Company remains well-reserved Consistently Well-Reserved Across Our Core1 Loan PortfolioAppropriate Allowance Coverage on Total Loan Portfolio ($ 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 Q2 2026 Highlights Pending

ORGANIZATION NAME 18 $194.6 $211.0 $234.8 1.19% 1.19% 1.28% Calculated Allowance Allowance as a % of Category 6/30/2025 3/31/2026 6/30/2026 $80.9 $87.8 $90.6 0.49% 0.49% 0.50% NPLs NPL as a % of Category 6/30/2025 3/31/2026 6/30/2026 $16,387 $17,763 $18,281 0.11% 0.17% 0.20% Period End Balance Net Charge-Off Ratio (Annualized) 6/30/2025 3/31/2026 6/30/2026 43% 9% 5% 17% 7% 10% 3% 6% Commercial and industrial Asset-based lending Municipal Leases Franchise Mortgage warehouse lines of credit Community Advantage - HOA Insurance agency lending Credit Quality - Commercial Loans Diversified portfolio with low net charge-offs Stable and Manageable Levels of Non-Performing Commercial LoansSteady Loan Growth Coupled with Proactive Credit Management ($ in Millions) ($ in Millions) Allowance Provides Appropriate Coverage Commercial Loan Composition (as of 6/30/2026) ($ in Millions) Prior Year is not included in the spreadsheet. The Prior Year for bottom left chart is Hardcoded

ORGANIZATION NAME 19 $224.4 $224.9 $209.9 1.69% 1.59% 1.47% Calculated Allowance Allowance as a % of Category 6/30/2025 3/31/2026 6/30/2026 $13,292 $14,162 $14,271 0.17% 0.21% 0.02% Period End Balance Net Charge-Off Ratio (Annualized) 6/30/2025 3/31/2026 6/30/2026 $32.8 $16.8 $17.2 0.25% 0.12% 0.12% NPLs NPL as a % of Category 6/30/2025 3/31/2026 6/30/2026 23% 24% 17% 13% 11% 10% 2% Multi-family Industrial Commercial and Residential construction Mixed use and other Office Retail Land Credit Quality - Commercial Real Estate Loans Well-diversified portfolio with a majority of its exposure in stabilized, income producing properties Continued Low Levels of NPLs in Q2 2026 Solid Growth in Portfolio with Modest Levels of Net Charge-offs ($ in Millions) ($ in Millions) Commercial Real Estate Loan Composition (as of 6/30/2026) ($ in Millions) Allowance Continues to Provide Appropriate Coverage Prior Year is not included in the spreadsheet. The Prior Year for bottom left chart is Hardcoded

ORGANIZATION NAME 20 $0.3 $0.0 $0.0 0.00% 0.00% 0.00% NPLs NPL as a % of Category 6/30/2025 3/31/2026 6/30/2026 $9,128 $2,160 Cash Surrender Value Other $8,507 $9,196 $9,313 0.00% 0.00% 0.00% Period End Balance Net Charge-Off Ratio (Annualized) 6/30/2025 3/31/2026 6/30/2026 1 Loan Collateral reported at actual values versus credit advance rate 2 Collateral Coverage is calculated by dividing Total Loan Collateral (Undiscounted) by Total Loan Portfolio Balance 5% 74% 5% 16% Annuity Brokerage Account Certificate of Deposit Letters of Credit OtherCollateral Coverage2 of 121% Pristine Low Levels of Non-Performing LoansConsistent Growth with Stellar Credit Quality ($ in Millions) ($ in Millions) Total Loan Collateral1 by Type (as of 6/30/2026) "Other" Loan Collateral1 by Type (as of 6/30/2026) ($ 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 21 Consistent Low Level of Non-Performing LoansStrong Seasonal Growth in Q2 2026, Consistent with Prior Years $8,323 $7,890 $8,612 0.16% 0.20% 0.16% Period End Balance Net Charge-Off Ratio (Annualized) 6/30/2025 3/31/2026 6/30/2026 $5,397 $4,553 $5,368 Originations Q2 2025 Q1 2026 Q2 2026 $44.8 $49.7 $44.1 0.54% 0.63% 0.51% NPLs NPL as a % of Category 6/30/2025 3/31/2026 6/30/2026 $4,108 $2,752 $1,443 $309 Current Premium Finance Receivables - Property and Casualty Insurance Loan Balances Projected to Mature Based on Modeled Contractual Cash Flows ≤ 3 Months 4-6 Months 7-9 Months > 9 months Premium Finance Receivables - Property and Casualty Insurance Steady year-over-year growth in portfolio with solid credit quality ($ in Millions) ($ in Millions) Projected Repayments Seasonally Higher Origination Volume ($ in Millions) ($ in Millions) Manual Input - Data comes from Mark B Manual Input - Data comes from Thanos Polyzois and Matt for Canada Pending

ORGANIZATION NAME 22 Mortgage Credit, 57% Business Credit, 14% Private Equity Funds, 9% Other NDFI Loans, 20% • 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 6/30/2026) NDFI lending represents a conservative 6% of the total loan portfolio in low risk sectors NDFI Loan Portfolio Breakdown ($ in Millions) $295 $464 $664 $1,898 Highlights $3,321 Mortgage Credit • NDFI Loans represent approximately 6% of the total loan portfolio as of June 30, 2026 • The majority of the portfolio consists of Mortgage Credit loans which are warehouse lines of credit secured primarily by first mortgages Q2 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 Pending

ORGANIZATION NAME Appendix

ORGANIZATION NAME 24 Hedging activities had a one basis point favorable impact to our Q2 2026 NIM, unchanged from the one basis point favorable impact to our Q1 2026 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 6/1/2026 $0.25B 6/1/2031 N/A N/A 3.79% Receive Fixed Swap 6/1/2026 $0.25B 6/1/2031 N/A N/A 3.90% Receive Fixed Swap 10/1/2026 $0.20B 10/1/2031 N/A N/A 3.38% Receive Fixed Swap 6/1/2026 $0.25B 12/1/2031 N/A N/A 4.00% 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 $5.35B Below are the details of the derivatives entered by the Company as of June 30, 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 Pending

ORGANIZATION NAME 25 $377.1 $282.5 $309.5 $270.8 $217.1 $150.3$133.9 $158.8 $192.5 $153.0 $115.5 $45.4 Total CRE Office Non-Medical Non Owner-Occupied <$2M $2M-$5M $5M-$10M $10M-$15M $15M-$20M >=$20M Chicago CBD, 8% Other CBD, 9% Suburban, 83% CRE Office Portfolio Geography CRE Office Portfolio (as of 6/30/2026) 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 $1,334.4 $137.0 $135.9 $799.1 $248.1 $525.5 263898 90 52 43 26 21 12 7 5 Number of Loans Per Category ($ in Millions) CRE Office Portfolio Composition Granularity of CRE Office Portfolio by Loan Size ($ in Millions) ($ in Millions) Portfolio Characteristics As of 3/31/2026 As of 6/30/2026 Balance ($ in Millions) $1,652 $1,607 CRE office as a % to Total CRE 11.67% 11.26% CRE office as a % to Total Loans 3.06% 2.89% Average Size of Loan ($ in Millions) $1.5 $1.5 Non-Performing Loan (NPL) Ratio 0.62% 0.64% Loans Still Accruing that are 30-89 Days Past Due Ratio 0.19% 1.49% Owner Occupied or Medical % 50% 50% $34.6 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 13 Considering Removing This Slide and Adding to Earnings Playbook for Exec Reference Pending

261Geographic 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 6/30/2026) 31% 8% 7% 6% 4% 4% 3% 2% 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 4% 2% 2% New Image Pending Pending 2%

ORGANIZATION NAME 27 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 28 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 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 29 Three Months Ended Six Months Ended Reconciliation of non-GAAP Net Interest Margin and Efficiency Ratio ($ in Thousands): June 30, March 31, December 31, September 30, June 30, June 30, June 30, 2026 2026 2025 2025 2025 2026 2025 (A) Interest Income (GAAP) $ 961,412 $ 927,560 $ 956,326 $ 963,834 $ 920,908 $ 1,888,972 $ 1,807,873 Taxable-equivalent adjustment: - Loans 2,111 2,026 2,134 2,154 2,200 4,137 4,406 - Liquidity Management Assets 630 586 661 675 680 1,216 1,370 - Other Earning Assets — — — — — — 3 (B) Interest Income (non-GAAP) $ 964,153 $ 930,172 $ 959,121 $ 966,663 $ 923,788 $ 1,894,325 $ 1,813,652 (C) Interest Expense (GAAP) 364,046 348,536 372,452 396,824 374,214 712,582 734,705 (D) Net Interest Income (GAAP) (A minus C) 597,366 579,024 583,874 567,010 546,694 1,176,390 1,073,168 (E) Net Interest Income (non-GAAP) (B minus C) 600,107 581,636 586,669 569,839 549,574 1,181,743 1,078,947 Net interest margin (GAAP) 3.50 % 3.54 % 3.52 % 3.48 % 3.52 % 3.52 % 3.53 % Net interest margin, fully taxable-equivalent (non-GAAP) 3.52 % 3.56 % 3.54 % 3.50 % 3.54 % 3.54 % 3.55 % (F) Non-interest income $ 141,269 $ 134,142 $ 130,390 $ 130,827 $ 124,089 $ 275,411 $ 240,723 (G) Gains (losses) on investment securities, net 1,845 (31) 1,505 2,972 650 1,814 3,846 (H) Non-interest expense 397,537 382,632 384,453 380,028 381,461 780,169 747,551 Efficiency ratio (H/(D+F-G)) 53.96 % 53.65 % 53.94 % 54.69 % 56.92 % 53.81 % 57.06 % Efficiency ratio (non-GAAP) (H/(E+F-G)) 53.76 % 53.45 % 53.73 % 54.47 % 56.68 % 53.61 % 56.81 % 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 $ 317,964 $ 300,940 $ 302,223 $ 296,041 $ 267,088 $ 618,904 $ 520,143 Add: Provision for credit losses 23,134 29,594 27,588 21,768 22,234 52,728 46,197 Pre-tax income, excluding provision for credit losses (non- GAAP) $ 341,098 $ 330,534 $ 329,811 $ 317,809 $ 289,322 $ 671,632 $ 566,340 Non-GAAP Reconciliation

ORGANIZATION NAME 30 Non-GAAP Reconciliation Three Months Ended Six Months Ended Reconciliation of non-GAAP Return on Average Tangible Common Equity ($ in Thousands): June 30, March 31, December 31, September 30, June 30, June 30, June 30, 2026 2026 2025 2025 2025 2026 2025 (N) Net income applicable to common shares $ 225,326 $ 219,021 $ 214,657 $ 188,913 $ 188,536 $ 444,347 $ 370,584 Add: Intangible asset amortization 4,921 4,958 4,999 5,196 5,580 9,879 11,198 Less: Tax effect of intangible asset amortization (1,304) (1,210) (1,310) (1,403) (1,495) (2,519) (2,923) After-tax intangible asset amortization $ 3,617 $ 3,748 $ 3,689 $ 3,793 $ 4,085 $ 7,360 $ 8,275 (O) Tangible net income applicable to common shares (non-GAAP) $ 228,943 $ 222,769 $ 218,346 $ 192,706 $ 192,621 $ 451,707 $ 378,859 Total average shareholders’ equity $ 7,474,449 $ 7,387,713 $ 7,166,608 $ 6,955,543 $ 6,862,040 $ 7,431,321 $ 6,662,598 Less: Average preferred stock (425,000) (425,000) (425,000) (483,288) (599,313) (425,000) (506,423) (P) Total average common shareholders’ equity $ 7,049,449 $ 6,962,713 $ 6,741,608 $ 6,472,255 $ 6,262,727 $ 7,006,321 $ 6,156,175 Less: Average intangible assets (889,059) (894,211) (901,022) (906,032) (910,924) (891,620) (913,483) (Q) Total average tangible common shareholders’ equity (non-GAAP) $ 6,160,390 $ 6,068,502 $ 5,840,586 $ 5,566,223 $ 5,351,803 $ 6,114,701 $ 5,242,692 Return on average common equity, annualized (N/P) 12.82 % 12.76 % 12.63 % 11.58 % 12.07 % 12.79 % 12.14 % Return on average tangible common equity, annualized (non-GAAP) (O/ Q) 14.91 % 14.89 % 14.83 % 13.74 % 14.44 % 14.90 % 14.57 % 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 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 Six Months Ended Reconciliation of Non-GAAP Net Income per Common Share: ($ in Thousands): June 30, March 31, December 31, September 30, June 30, June 30, June 30, 2026 2026 2025 2025 2025 2026 2025 Net income $ 233,693 $ 227,388 $ 223,024 $ 216,254 $ 195,527 $ 461,081 $ 384,566 Preferred stock dividends 8,367 8,367 8,367 13,295 6,991 16,734 13,982 Preferred stock redemption — — — 14,046 — — — (R) Net income applicable to common shares $ 225,326 $ 219,021 $ 214,657 $ 188,913 $ 188,536 $ 444,347 $ 370,584 (S) Weighted average common shares outstanding 67,434 67,246 66,970 66,952 66,931 67,341 66,829 Dilutive potential common shares 852 851 1,143 1,028 888 852 903 (T) Average common shares and dilutive common shares 68,286 68,097 68,113 67,980 67,819 68,193 67,732 Net income per common share - Basic (R/S) $3.34 $3.26 $3.21 $2.82 $2.82 $6.60 $5.55 Net income per common share - Diluted (R/T) $3.30 $3.22 $3.15 $2.78 $2.78 $6.52 $5.47 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 $3.34 $3.26 $3.21 $3.11 $2.82 $6.60 $5.55 Net income per common share - Diluted (non-GAAP) (R+U)/T $3.30 $3.22 $3.15 $3.06 $2.78 $6.52 $5.47

ORGANIZATION NAME 32 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): June 30, March 31, December 31, September 30, June 30, 2026 2026 2025 2025 2025 Total shareholders’ equity (GAAP) $ 7,525,116 $ 7,378,100 $ 7,258,715 $ 7,045,757 $ 7,225,696 Less: Non-convertible preferred stock (GAAP) (425,000) (425,000) (425,000) (425,000) (837,500) Less: Acquisition-related intangible assets (GAAP) (885,338) (890,698) (895,959) (902,936) (908,639) (I) Total tangible common shareholders’ equity (non-GAAP) $ 6,214,778 $ 6,062,402 $ 5,937,756 $ 5,717,821 $ 5,479,557 (J) Total assets (GAAP) $ 74,668,135 $ 72,157,433 $ 71,142,046 $ 69,629,638 $ 68,983,318 Less: Acquisition-related intangible assets (GAAP) (885,338) (890,698) (895,959) (902,936) (908,639) (K) Total tangible assets (non-GAAP) $ 73,782,797 $ 71,266,735 $ 70,246,087 $ 68,726,702 $ 68,074,679 Common equity to assets ratio (GAAP) (L/J) 9.5 % 9.6 % 9.6 % 9.5 % 9.3 % Tangible common equity ratio (non-GAAP) (I/K) 8.4 % 8.5 % 8.5 % 8.3 % 8.0 % Reconciliation of non-GAAP Tangible Book Value per Common Share ($'s and Shares in Thousands): Total shareholders’ equity $ 7,525,116 $ 7,378,100 $ 7,258,715 $ 7,045,757 $ 7,225,696 Less: Non-convertible preferred stock (GAAP) (425,000) (425,000) (425,000) (425,000) (837,500) (L) Total common equity $ 7,100,116 $ 6,953,100 $ 6,833,715 $ 6,620,757 $ 6,388,196 (M) Actual common shares outstanding 67,455 67,437 66,975 66,961 66,938 Book value per common share (L/M) $105.26 $103.10 $102.03 $98.87 $95.43 Tangible book value per common share (non-GAAP) (I/M) $92.13 $89.90 $88.66 $85.39 $81.86

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- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

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- Details

Name:

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