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Washington, D.C. 20549  _________________________________________ FORM 10-Q _________________________________________ ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from              to Commission File Number 001-35077 _____________________________________  WINTRUST FINANCIAL CORP ORATION (Exact name of registrant as specified in its charter)   Illinois 36-3873352 (State of incorporation or organization) (I.R.S. Employer Identification No.) 9700 W. Higgins Road, Suite 800 Rosemont , Illinois 60018 (Address of principal executive offices) ( 847 )  939-9000 (Registrant’s telephone number, including area code) 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 1/1,000 th 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 (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.     Yes    ☑     No   ☐ Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).     Yes    ☑     No   ☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one): Large accelerated filer ☑ Accelerated filer ☐ Non-accelerated filer ☐ (Do not check if a smaller reporting company) Smaller reporting company ☐ 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.    ☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes   ☐    No   ☑ Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date. Common Stock — no par value, 66,971,158 shares, as of October 31, 2025 Table of Contents TABLE OF CONTENTS   Page PART I. — FINANCIAL INFORMATION ITEM 1. Financial Statements 1 ITEM 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations 49 ITEM 3. Quantitative and Qualitative Disclosures About Market Risk 78 ITEM 4. Controls and Procedures 79 PART II. — OTHER INFORMATION ITEM 1. Legal Proceedings 80 ITEM 1A. Risk Factors 80 ITEM 2. Unregistered Sales of Equity Securities, Use of Proceeds and Issuer Purchases of Equity Securities 80 ITEM 3. Defaults Upon Senior Securities NA ITEM 4. Mine Safety Disclosures NA ITEM 5. Other Information 81 ITEM 6. Exhibits 81 Signatures 82 Table of Contents PART I ITEM 1. FINANCIAL STATEMENTS WINTRUST FINANCIAL CORPORATION AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF CONDITION (Unaudited) (Unaudited) (Dollars in thousands, except per share data) September 30, 2025 December 31, 2024 September 30, 2024 Assets Cash and due from banks $ 565,406   $ 452,017   $ 725,465   Federal funds sold and securities purchased under resale agreements 63   6,519   5,663   Interest-bearing deposits with banks 3,422,452   4,409,753   3,648,117   Available-for-sale securities, at fair value 5,274,124   4,141,482   3,912,232   Held-to-maturity securities, at amortized cost, net of allowance for credit losses of $ 395 , $ 457 and $ 479 at September 30, 2025, December 31, 2024 and September 30, 2024, respectively ($ 2.9 billion, $ 2.9 billion and $ 3.1 billion fair value at September 30, 2025, December 31, 2024 and September 30, 2024, respectively) 3,438,406   3,613,263   3,677,420   Trading account securities —   4,072   3,472   Equity securities with readily determinable fair value 63,445   215,412   125,310   Federal Home Loan Bank and Federal Reserve Bank stock 282,755   281,407   266,908   Brokerage customer receivables —   18,102   16,662   Mortgage loans held-for-sale, at fair value 333,883   331,261   461,067   Loans, net of unearned income 52,063,482   48,055,037   47,067,447   Allowance for loan losses ( 386,622 ) ( 364,017 ) ( 360,279 ) Net loans 51,676,860   47,691,020   46,707,168   Premises, software and equipment, net 775,425   779,130   772,002   Lease investments, net 301,000   278,264   270,171   Accrued interest receivable and other assets 1,614,674   1,739,334   1,721,090   Receivable on unsettled securities sales 978,209   —   551,031   Goodwill 797,639   796,942   800,780   Other acquisition-related intangible assets 105,297   121,690   123,866   Total assets $ 69,629,638   $ 64,879,668   $ 63,788,424   Liabilities and Shareholders’ Equity Deposits: Non-interest-bearing $ 10,952,146   $ 11,410,018   $ 10,739,132   Interest-bearing 45,759,235   41,102,331   40,665,834   Total deposits 56,711,381   52,512,349   51,404,966   Federal Home Loan Bank advances 3,151,309   3,151,309   3,171,309   Other borrowings 579,328   534,803   647,043   Subordinated notes 298,536   298,283   298,188   Junior subordinated debentures 253,566   253,566   253,566   Accrued interest payable and other liabilities 1,589,761   1,785,061   1,613,638   Total liabilities 62,583,881   58,535,371   57,388,710   Shareholders’ Equity: Preferred stock, no par value; 20,000,000 shares authorized: Series D - $ 25 liquidation value; no shares issued and outstanding at September 30, 2025, and 5,000,000 shares issued and outstanding at December 31, 2024 and September 30, 2024 —   125,000   125,000   Series E - $ 25,000 liquidation value; no shares issued and outstanding at September 30, 2025, and 11,500 shares issued and outstanding at December 31, 2024 and September 30, 2024 —   287,500   287,500   Series F - $ 25,000 liquidation value; 17,000 shares issued and outstanding at September 30, 2025 and no shares issued and outstanding at December 31, 2024 and September 30, 2024 425,000   —   —   Common stock, no par value; $ 1.00 stated value; 100,000,000 shares authorized at September 30, 2025, December 31, 2024 and September 30, 2024; 67,042,228 shares issued at September 30, 2025, 66,560,182 shares issued at December 31, 2024 and 66,546,351 shares issued at September 30, 2024 67,042   66,560   66,546   Surplus 2,521,306   2,482,561   2,470,228   Treasury stock, at cost, 81,019 shares at September 30, 2025, 64,955 shares at December 31, 2024, and 64,808 shares at September 30, 2024 ( 9,150 ) ( 6,153 ) ( 6,098 ) Retained earnings 4,356,367   3,897,164   3,748,715   Accumulated other comprehensive loss ( 314,808 ) ( 508,335 ) ( 292,177 ) Total shareholders’ equity 7,045,757   6,344,297   6,399,714   Total liabilities and shareholders’ equity $ 69,629,638   $ 64,879,668   $ 63,788,424   See accompanying notes to unaudited consolidated financial statements. 1 Table of Contents WINTRUST FINANCIAL CORPORATION AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) Three Months Ended Nine Months Ended (Dollars in thousands, except per share data) September 30, 2025 September 30, 2024 September 30, 2025 September 30, 2024 Interest income Interest and fees on loans $ 832,140   $ 794,163   $ 2,398,499   $ 2,254,316   Mortgage loans held-for-sale 4,757   6,233   13,875   15,813   Interest-bearing deposits with banks 34,992   32,608   106,075   68,997   Federal funds sold and securities purchased under resale agreements 75   277   530   313   Investment securities 86,426   69,592   236,495   209,049   Trading account securities —   11   11   42   Federal Home Loan Bank and Federal Reserve Bank stock 5,444   5,451   16,144   14,903   Brokerage customer receivables —   269   78   663   Total interest income 963,834   908,604   2,771,707   2,564,096   Interest expense Interest on deposits 355,846   362,019   1,009,549   997,254   Interest on Federal Home Loan Bank advances 26,007   26,254   77,172   73,099   Interest on other borrowings 6,887   9,013   20,636   26,961   Interest on subordinated notes 3,717   3,712   11,166   14,384   Interest on junior subordinated debentures 4,367   5,023   13,006   15,011   Total interest expense 396,824   406,021   1,131,529   1,126,709   Net interest income 567,010   502,583   1,640,178   1,437,387   Provision for credit losses 21,768   22,334   67,965   84,068   Net interest income after provision for credit losses 545,242   480,249   1,572,213   1,353,319   Non-interest income Wealth management 37,188   37,224   108,051   107,452   Mortgage banking 24,451   15,974   68,150   72,761   Service charges on deposit accounts 19,825   16,430   58,689   46,787   Gains on investment securities, net 2,972   3,189   6,818   233   Fees from covered call options 5,619   988   14,689   7,891   Trading gains (losses), net 172   ( 130 ) 259   617   Operating lease income, net 15,466   15,335   45,919   43,383   Other 25,134   24,137   68,975   95,750   Total non-interest income 130,827   113,147   371,550   374,874   Non-interest expense Salaries and employee benefits 219,668   211,261   650,735   604,975   Software and equipment 35,027   31,574   106,266   88,536   Operating lease equipment 10,409   10,518   31,637   32,035   Occupancy, net 20,809   19,945   61,815   58,616   Data processing 11,329   9,984   34,713   28,779   Advertising and marketing 19,027   18,239   50,060   48,715   Professional fees 7,465   9,783   25,752   29,303   Amortization of other acquisition-related intangible assets 5,196   4,042   16,394   6,322   FDIC insurance 11,418   10,512   33,315   35,478   Other real estate owned expense, net 262   ( 938 ) 1,410   ( 805 ) Other 39,418   35,767   115,482   102,231   Total non-interest expense 380,028   360,687   1,127,579   1,034,185   Income before taxes 296,041   232,709   816,184   694,008   Income tax expense 79,787   62,708   215,364   184,325   Net income $ 216,254   $ 170,001   $ 600,820   $ 509,683   Preferred stock dividends 13,295   6,991   27,277   20,973   Preferred stock redemption 14,046   —   14,046   —   Net income applicable to common shares $ 188,913   $ 163,010   $ 559,497   $ 488,710   Net income per common share—Basic $ 2.82   $ 2.51   $ 8.37   $ 7.79   Net income per common share—Diluted $ 2.78   $ 2.47   $ 8.25   $ 7.67   Cash dividends declared per common share $ 0.50   $ 0.45   $ 1.50   $ 1.35   Weighted average common shares outstanding 66,952   64,888   66,871   62,743   Dilutive potential common shares 1,028   1,053   945   934   Average common shares and dilutive common shares 67,980   65,941   67,816   63,677   See accompanying notes to unaudited consolidated financial statements. 2 Table of Contents WINTRUST FINANCIAL CORPORATION AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)   Three Months Ended Nine Months Ended (In thousands) September 30, 2025 September 30, 2024 September 30, 2025 September 30, 2024 Net income $ 216,254   $ 170,001   $ 600,820   $ 509,683   Unrealized gains on available-for-sale securities Before tax 75,521   168,166   155,712   69,510   Tax effect ( 19,635 ) ( 43,688 ) ( 40,485 ) ( 17,594 ) Net of tax 55,886   124,478   115,227   51,916   Reclassification of net gains (losses) on available-for-sale securities included in net income Before tax 269   45   ( 119 ) 1,223   Tax effect ( 70 ) ( 6 ) 31   ( 318 ) Net of tax 199   39   ( 88 ) 905   Reclassification of amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale Before tax 10   14   31   78   Tax effect ( 3 ) ( 4 ) ( 8 ) ( 21 ) Net of tax 7   10   23   57   Net unrealized gains on available-for-sale securities 55,680   124,429   115,292   50,954   Unrealized gains on derivative instruments Before tax 4,280   124,848   92,317   31,914   Tax effect ( 1,112 ) ( 32,460 ) ( 24,002 ) ( 7,879 ) Net unrealized gains on derivative instruments 3,168   92,388   68,315   24,035   Foreign currency adjustment Before tax ( 8,997 ) 3,884   12,123   ( 7,323 ) Tax effect 1,574   ( 680 ) ( 2,203 ) 1,388   Net foreign currency adjustment ( 7,423 ) 3,204   9,920   ( 5,935 ) Total other comprehensive income 51,425   220,021   193,527   69,054   Comprehensive income $ 267,679   $ 390,022   $ 794,347   $ 578,737   See accompanying notes to unaudited consolidated financial statements. 3 Table of Contents WINTRUST FINANCIAL CORPORATION AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY (UNAUDITED) (Dollars in thousands, except per share data) Preferred stock Common stock Surplus Treasury stock Retained earnings Accumulated other comprehensive loss Total shareholders’ equity Balance at June 30, 2024 $ 412,500   $ 61,825   $ 1,964,645   $ ( 5,760 ) $ 3,615,616   $ ( 512,198 ) $ 5,536,628   Net income —  —  —  —  170,001   —  170,001   Other comprehensive income, net of tax —  —  —  —  —  220,021   220,021   Cash dividends declared on common stock, $ 0.45 per share —  —  —  —  ( 29,911 ) —  ( 29,911 ) Dividends on Series D preferred stock, $ 0.41 per share and Series E preferred stock, $ 429.69 per share —  —  —  —  ( 6,991 ) —  ( 6,991 ) Stock-based compensation —  —  9,461   —  —  —  9,461   Common stock issued for: Acquisition of Macatawa Bank Corporation —  4,702   494,537   —  —  —  499,239   Restricted stock awards —  10   ( 10 ) ( 338 ) —  —  ( 338 ) Employee stock purchase plan —  9   788   —  —  —  797   Director compensation plan —  —  807   —  —  —  807   Balance at September 30, 2024 $ 412,500   $ 66,546   $ 2,470,228   $ ( 6,098 ) $ 3,748,715   $ ( 292,177 ) $ 6,399,714   Balance at January 1, 2024 $ 412,500   $ 61,269   $ 1,943,806   $ ( 2,217 ) $ 3,345,399   $ ( 361,231 ) $ 5,399,526   Net income —  —  —  —  509,683   —  509,683   Other comprehensive income, net of tax —  —  —  —  —  69,054   69,054   Cash dividends declared on common stock, $ 1.35 per share —  —  —  —  ( 85,394 ) —  ( 85,394 ) Dividends on Series D preferred stock, $ 1.23 per share and Series E preferred stock, $ 1,289.07 per share —  —  —  —  ( 20,973 ) —  ( 20,973 ) Stock-based compensation —  —  27,568   —  —  —  27,568   Common stock issued for: Acquisition of Macatawa Bank Corporation —  4,702   494,537   —  —  —  499,239   Exercise of stock options —  1   24   —  —  —  25   Restricted stock awards —  533   ( 529 ) ( 3,881 ) —  —  ( 3,877 ) Employee stock purchase plan —  26   2,414   —  —  —  2,440   Director compensation plan —  15   2,408   —  —  —  2,423   Balance at September 30, 2024 $ 412,500   $ 66,546   $ 2,470,228   $ ( 6,098 ) $ 3,748,715   $ ( 292,177 ) $ 6,399,714   Balance at June 30, 2025 $ 837,500   $ 67,025   $ 2,495,637   $ ( 9,156 ) $ 4,200,923   $ ( 366,233 ) $ 7,225,696   Net income —   —   —   —   216,254   —   216,254   Other comprehensive income, net of tax —   —   —   —   —   51,425   51,425   Cash dividends declared on common stock, $ 0.50 per share —   —   —   —   ( 33,469 ) —   ( 33,469 ) Dividends on Series F preferred stock, $ 782.03 per share —   —   —   —   ( 13,295 ) —   ( 13,295 ) Redemption of Series D and Series E preferred stock ( 412,500 ) —   14,046   —   ( 14,046 ) —   ( 412,500 ) Stock-based compensation —   —   10,071   —   —   —   10,071   Issuance of Series F Preferred Stock —   —   ( 64 ) —   —   —   ( 64 ) Common stock issued for: Restricted stock awards —   10   ( 16 ) 6   —   —   —   Employee stock purchase plan —   7   839   —   —   —   846   Director compensation plan —   —   793   —   —   —   793   Balance at September 30, 2025 $ 425,000   $ 67,042   $ 2,521,306   $ ( 9,150 ) $ 4,356,367   $ ( 314,808 ) $ 7,045,757   Balance at January 1, 2025 $ 412,500   $ 66,560   $ 2,482,561   $ ( 6,153 ) $ 3,897,164   $ ( 508,335 ) $ 6,344,297   Net income —   —   —   —   600,820   —   600,820   Other comprehensive income, net of tax —   —   —   —   —   193,527   193,527   Cash dividends declared on common stock, $ 1.50 per share —   —   —   —   ( 100,294 ) —   ( 100,294 ) Dividends on Series D preferred stock, $ 0.82 per share, Series E preferred stock, $ 859.38 per share and Series F preferred stock, $ 782.03 per share —   —   —   —   ( 27,277 ) —   ( 27,277 ) Redemption of Series D and Series E preferred stock ( 412,500 ) —   14,046   —   ( 14,046 ) —   ( 412,500 ) Stock-based compensation —   —   30,646   —   —   —   30,646   Issuance of Series F Preferred Stock 425,000   —   ( 10,852 ) —   —   —   414,148   Common stock issued for: Exercise of stock options —   5   215   —   —   —   220   Restricted stock awards —   435   ( 441 ) ( 2,997 ) —   —   ( 3,003 ) Employee stock purchase plan —   23   2,588   —   —   —   2,611   Director compensation plan —   19   2,543   —   —   —   2,562   Balance at September 30, 2025 $ 425,000   $ 67,042   $ 2,521,306   $ ( 9,150 ) $ 4,356,367   $ ( 314,808 ) $ 7,045,757   See accompanying notes to unaudited consolidated financial statements. 4 Table of Contents WINTRUST FINANCIAL CORPORATION AND SUBSIDIARIES CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) Nine Months Ended (In thousands) September 30, 2025 September 30, 2024 Operating Activities: Net income $ 600,820   $ 509,683   Adjustments to reconcile net income to net cash provided by operating activities Provision for credit losses 67,965   84,068   Depreciation, amortization and accretion, net 88,905   70,884   Stock-based compensation expense 30,646   27,568   Accretion of discount on securities, net ( 4,412 ) ( 1,380 ) Accretion of discount and deferred fees on loans, net ( 15,092 ) ( 11,876 ) Mortgage servicing rights fair value changes 29,684   26,106   Non-designated derivatives fair value changes, net ( 9,065 ) 54,507   Originations and purchases of mortgage loans held-for-sale ( 1,785,392 ) ( 1,964,576 ) Early buy-out exercises of mortgage loans held-for-sale guaranteed by U.S. government agencies, net of subsequent paydowns or payoffs ( 15,773 ) ( 22,558 ) Proceeds from sales of mortgage loans held-for-sale 1,785,096   1,824,513   Bank owned life insurance (“BOLI”) gains ( 4,644 ) ( 4,519 ) Decrease in trading securities, net 4,072   1,235   Decrease (increase) in brokerage customer receivables, net 18,102   ( 6,070 ) Gains on mortgage loans sold ( 49,990 ) ( 47,978 ) Gains on premium financing receivables sold —   ( 4,575 ) Gains on investment securities, net, and dividend reinvestment on equity securities ( 6,818 ) ( 233 ) Losses (gains) on sales of premises and equipment, net 418   ( 93 ) Losses (gains) on sales and fair value adjustments of other real estate owned, net 816   ( 1,234 ) Decrease (increase) in accrued interest receivable and other assets, net 59,739   ( 46,711 ) Decrease in accrued interest payable and other liabilities, net ( 136,388 ) ( 256,022 ) Net Cash Provided by Operating Activities 658,689   230,739   Investing Activities: Proceeds from calls and sales of available-for-sale securities 705,703   1,218,695   Proceeds from payments and maturities of available-for-sale securities 402,735   360,773   Proceeds from payments, maturities and calls of held-to-maturity securities 174,383   178,553   Proceeds from sales of equity securities with readily determinable fair value 226,542   51,792   Proceeds from sales and capital distributions of equity securities without readily determinable fair value —   2,226   Purchases of available-for-sale securities ( 3,040,628 ) ( 1,116,875 ) Purchases of equity securities with readily determinable fair value ( 63,413 ) ( 33,322 ) Purchases of equity securities without readily determinable fair value ( 1,682 ) ( 6,933 ) Purchases of Federal Home Loan Bank and Federal Reserve Bank stock, net ( 1,348 ) ( 61,905 ) (Contributions to) distributions from investments in partnerships, net ( 13,422 ) 2,586   Net cash received in business combinations —   531,308   Proceeds from sales of premium financing receivables, net —   627,450   Proceeds from sales of other real estate owned —   11,481   Decrease (increase) in interest-bearing deposits with banks, net 994,409   ( 1,566,241 ) Increase in loans, net ( 4,017,366 ) ( 4,361,365 ) Redemption of BOLI —   304   Purchases of premises and equipment, net ( 26,921 ) ( 66,457 ) Net Cash Used for Investing Activities ( 4,661,008 ) ( 4,227,930 ) Financing Activities: Increase in deposit accounts, net 4,199,032   3,697,621   Increase in other borrowings, net 33,753   7,352   Increase in Federal Home Loan Bank advances, net —   845,238   Proceeds from the issuance of preferred stock, net 414,148   —   Redemption of preferred stock ( 412,500 ) —   Repayment of subordinated notes —   ( 140,000 ) Issuance of common shares resulting from the exercise of stock options, employee stock purchase plan and director compensation plan 5,387   4,892   Common stock repurchases for tax withholdings related to stock-based compensation ( 2,997 ) ( 3,881 ) Dividends paid ( 127,571 ) ( 106,367 ) Net Cash Provided by Financing Activities 4,109,252   4,304,855   Net Increase in Cash and Cash Equivalents 106,933   307,664   Cash and Cash Equivalents at Beginning of Period 458,536   423,464   Cash and Cash Equivalents at End of Period $ 565,469   $ 731,128   See accompanying notes to unaudited consolidated financial statements. 5 Table of Contents WINTRUST FINANCIAL CORPORATION AND SUBSIDIARIES NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS (1) Basis of Presentation The interim consolidated financial statements of Wintrust Financial Corporation and its subsidiaries (collectively, “Wintrust” or the “Company”) presented herein are unaudited, but in the opinion of management, reflect all necessary adjustments of a normal or recurring nature for a fair presentation of results as of the dates and for the periods covered by the interim consolidated financial statements. The accompanying interim consolidated financial statements are unaudited and do not include information or footnotes necessary for a complete presentation of financial condition, results of operations or cash flows in accordance with U.S. generally accepted accounting principles (“GAAP”). The interim unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024 (“2024 Form 10-K”). Operating results reported for the period are not necessarily indicative of the results which may be expected for the entire year. Reclassifications of certain prior period amounts have been made to conform to the current period presentation. The preparation of the financial statements requires management to make estimates, assumptions and judgments that affect the reported amounts of assets and liabilities. Management believes that the estimates made are reasonable; however, changes in estimates may be required if economic or other conditions develop differently from management’s expectations. Certain policies and accounting principles inherently have a greater reliance on the use of estimates, assumptions and judgments and as such have a greater possibility of producing results that could be materially different than originally reported. Management views critical accounting policies to be those which are highly dependent on subjective or complex judgments, estimates and assumptions, and where changes in those estimates and assumptions could have a significant impact on the financial statements. Management currently views the determination of the allowance for credit losses, including the allowance for loan losses, the allowance for unfunded commitment losses and the allowance for held-to-maturity securities losses, estimations of fair value, the valuations required for impairment testing of goodwill, the valuation and accounting for derivative instruments and income taxes as the accounting areas that require the most subjective and complex judgments, and as such could be the most subject to revision as new information becomes available. Descriptions of the Company’s significant accounting policies are included in Note (1) “Summary of Significant Accounting Policies” of the 2024 Form 10-K. In preparation of these financial statements, subsequent events were evaluated through the time the financial statements were issued. Financial statements are considered issued when they are widely distributed to all shareholders and other financial statement users or filed with the SEC. (2) Recent Accounting Developments Income Tax Disclosures In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” to enhance the transparency and decision usefulness of income tax disclosures. This ASU requires annually that all entities disclose increasingly disaggregated information on amount of income taxes paid. Further, this ASU requires annually that all public entities must disclose specific categories in the rate reconciliation and provide additional information for reconciling items that meet a specific quantitative threshold. This guidance is effective for fiscal years beginning after December 15, 2024, and is to be applied either on a prospective basis or retrospective basis. Early adoption is permitted. The Company expects adoption of this standard will expand income tax disclosures within the consolidated financial statements. Compensation – Scope Application of Profits Interest and Similar Awards In March 2024, the FASB issued ASU No. 2024-01, “Compensation – Stock Compensation (Topic 718): Scope Application of Profits Interest and Similar Awards” which clarifies the guidance by providing an illustrative example to demonstrate how an entity should apply the scope guidance in Topic 718 when determining whether profits interest and similar awards should be accounted for in accordance with Topic 718. For public business entities, this guidance is effective for fiscal years beginning after December 15, 2024, including interim periods therein, and is to be applied either on a prospective basis or retrospective basis. Early adoption is permitted. Adoption of this standard did not impact the Company’s consolidated financial statements. 6 Table of Contents Disaggregation of Income Statement Expenses In November 2024, the FASB issued ASU No. 2024-03, “Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses,” which requires public business entities to disclose additional information about specific expense categories including employee compensation, depreciation, intangible asset amortization, etc., as well as qualitative descriptions of certain expenses, in the notes to the financial statements. This guidance is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027. The guidance is to be applied either prospectively or retrospectively. Early adoption is permitted. The Company is currently evaluating the impact of adopting this new guidance on the consolidated financial statements. Induced Conversions of Convertible Debt Instruments In November 2024, the FASB issued ASU No. 2024-04, “Debt – Debt with Conversion and Other Options (Subtopic 470-20): Induced Conversions of Convertible Debt Instruments” to clarify the requirements for determining whether certain settlements of convertible debt instruments should be accounted for as an induced conversion. This guidance is effective for fiscal years beginning after December 15, 2025, including interim periods therein, and is to be applied either on a prospective basis or retrospective basis. Early adoption is permitted. Adoption of this standard is expected to have no impact on the Company’s consolidated financial statements. Determining the Accounting Acquirer in the Acquisition of a Variable Interest Entity In May 2025, the FASB issued ASU No. 2025-03, “Business Combinations (Topic 805) and Consolidation (Topic 810): Determining the Accounting Acquirer in the Acquisition of a Variable Interest Entity” which requires an entity involved in an acquisition transaction affected by primarily exchanging equity interests when the legal acquirer is a variable interest entity that meets the definition of a business, to consider specific factors when determining which entity is the accounting acquirer. This guidance is effective for fiscal years beginning after December 15, 2026, including interim periods therein, and is to be applied on a prospective basis to any acquisition transaction that occurs after the initial application date. Early adoption is permitted. The Company is currently evaluating the impact of adopting this new guidance on the consolidated financial statements. Measurement of Credit Losses for Accounts Receivable and Contract Assets In July 2025, the FASB issued ASU No. 2025-05, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets” which provides public business entities with a practical expedient—and private companies an accounting policy election—when estimating expected credit losses for current accounts receivable and current contract assets arising from transactions accounted for under Topic Accounting Standards Codification (“ASC”) 606. In developing reasonable and supportable forecasts—if an entity elects the practical expedient—it assumes that current conditions as of the balance sheet date do not change for the remaining life of the assets in scope. This guidance is effective for fiscal years beginning after December 15, 2025, including interim periods therein, and is to be applied prospectively for all entities that elect either the practical expedient or accounting policy election. Early adoption is permitted. Adoption of this standard will not impact the Company’s consolidated financial statements as the Company has decided not to elect the practical expedient. Targeted Improvements to the Accounting for Internal-Use Software In September 2025, the FASB issued ASU No. 2025-06, “Intangibles – Goodwill and Other Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software” which removes all references to prescriptive and sequential software development stages, instead requiring capitalization of software costs when Management has authorized and committed to funding the software project, and it is probable that the project will be completed and the software will be used to perform the function needed. This guidance is effective for fiscal years beginning after December 15, 2027, including interim periods therein, and can be applied either prospectively, retrospectively, or through a modified transition approach. Early adoption is permitted at the beginning of an annual reporting period. The Company is currently evaluating the impact of adopting this new guidance on the consolidated financial statements. Derivatives Scope Refinements & Scope Clarification for Share-Based Noncash Consideration In September 2025, the FASB issued ASU No. 2025-07, “Derivatives and Hedging (Topic 815) and Revenue from Contracts with Customers (Topic 606): Derivatives Scope Refinements and Scope Clarification for Share-Based Noncash Consideration from a Customer in a Revenue Contract” which covers two separate issues. Issue 1 adds a scope exception to exclude from derivative accounting non-exchange-traded contracts with underlyings linked to the occurrence or nonoccurrence of an event. Issue 2 clarifies that entities should apply the guidance in ASC 606—on noncash consideration—to a contract with share-based noncash consideration from a customer for the transfer of goods or services. This guidance is effective for fiscal years beginning after December 15, 2026, including interim periods therein, and can be applied either on a prospective or modified 7 Table of Contents retrospective basis. Early adoption is permitted. The Company is currently evaluating the impact of adopting this new guidance on the consolidated financial statements. (3) Business Combinations On August 1, 2024, the Company completed its previously announced acquisition of Macatawa Bank Corporation (“Macatawa”), the parent company of Macatawa Bank. Pursuant to the terms of the merger, each common share of Macatawa outstanding at the time of merger was converted into the right to receive 0.137 shares of Wintrust common stock, with cash paid in lieu of fractional shares. As a result, the Company issued approximately 4.7 million shares of common stock, the fair value of consideration paid was $ 499.3 million. Macatawa operates 26 full-service branches located throughout communities in Kent, Ottawa and northern Allegan counties in the state of Michigan. Macatawa offers a full range of banking, retail and commercial lending, wealth management and ecommerce services to individuals, businesses and governmental entities. As of August 1, 2024, Macatawa had fair values of approximately $ 2.9 billion in assets, $ 2.3 billion in deposits and $ 1.3 billion in loans. In conjunction with the acquisition, the Company recorded $ 53.7 million discount on acquired loans, $ 33.5 million discount on securities and recorded total intangibles of $ 253.0 million. As of the first quarter of 2025, the purchase accounting was finalized and is no longer subject to change. (4) Cash and Cash Equivalents For purposes of the Consolidated Statements of Cash Flows, the Company considers cash and cash equivalents to include cash on hand, cash items in the process of collection, non-interest bearing amounts due from correspondent banks, federal funds sold and securities purchased under resale agreements with original maturities of three months or less. These items are included within the Company’s Consolidated Statements of Condition as cash and due from banks, and federal funds sold and securities purchased under resale agreements. 8 Table of Contents (5) Investment Securities The following tables are a summary of the investment securities portfolios as of the dates shown: September 30, 2025 (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-sale securities U.S. Treasury $ 7,997   $ 39   $ —   $ 8,036   U.S. government agencies 50,000   —   ( 3,489 ) 46,511   Municipal 194,723   1,673   ( 2,152 ) 194,244   Corporate notes: Financial issuers 82,000   —   ( 2,628 ) 79,372   Other 1,000   —   —   1,000   Mortgage-backed: (1) Residential mortgage-backed securities 4,761,918   17,519   ( 419,975 ) 4,359,462   Commercial (multi-family) mortgage-backed securities 233,127   347   ( 5,136 ) 228,338   Collateralized mortgage obligations 371,584   2,373   ( 16,796 ) 357,161   Total available-for-sale securities $ 5,702,349   $ 21,951   $ ( 450,176 ) $ 5,274,124   Held-to-maturity securities U.S. government agencies $ 313,540   $ —   $ ( 59,178 ) $ 254,362   Municipal 155,770   458   ( 2,283 ) 153,945   Mortgage-backed: (1) Residential mortgage-backed securities 2,724,442   5,421   ( 505,165 ) 2,224,698   Commercial (multi-family) mortgage-backed securities 6,315   65   ( 102 ) 6,278   Collateralized mortgage obligations 188,223   980   ( 17,400 ) 171,803   Corporate notes 50,511   26   ( 653 ) 49,884   Total held-to-maturity securities $ 3,438,801   $ 6,950   $ ( 584,781 ) $ 2,860,970   Less: Allowance for credit losses ( 395 ) Held-to-maturity securities, net of allowance for credit losses $ 3,438,406   Equity securities with readily determinable fair value $ 60,843   $ 6,520   $ ( 3,918 ) $ 63,445   (1) None of our mortgage-backed securities are subprime. 9 Table of Contents December 31, 2024 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Available-for-sale securities U.S. Treasury $ 37,858   $ 49   $ —   $ 37,907   U.S. government agencies 50,000   —   ( 5,055 ) 44,945   Municipal 188,405   528   ( 4,340 ) 184,593   Corporate notes: Financial issuers 83,997   —   ( 3,828 ) 80,169   Other 1,000   —   ( 7 ) 993   Mortgage-backed: (1) Residential mortgage-backed securities 4,106,641   284   ( 553,287 ) 3,553,638   Commercial (multi-family) mortgage-backed securities 19,064   23   ( 755 ) 18,332   Collateralized mortgage obligations 238,574   1,187   ( 18,856 ) 220,905   Total available-for-sale securities $ 4,725,539   $ 2,071   $ ( 586,128 ) $ 4,141,482   Held-to-maturity securities U.S. government agencies $ 313,539   $ —   $ ( 69,127 ) $ 244,412   Municipal 161,016   243   ( 5,290 ) 155,969   Mortgage-backed: (1) Residential Mortgage-backed securities 2,864,927   —   ( 605,014 ) 2,259,913   Commercial (multi-family) mortgage-backed securities 6,364   —   ( 252 ) 6,112   Collateralized mortgage obligations 211,023   815   ( 22,683 ) 189,155   Corporate notes 56,851   8   ( 1,870 ) 54,989   Total held-to-maturity securities $ 3,613,720   $ 1,066   $ ( 704,236 ) $ 2,910,550   Less: Allowance for credit losses ( 457 ) Held-to-maturity securities, net of allowance for credit losses $ 3,613,263   Equity securities with readily determinable fair value $ 220,758   $ 2,905   $ ( 8,251 ) $ 215,412   (1) None of our mortgage-backed securities are subprime. 10 Table of Contents September 30, 2024 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Available-for-sale securities U.S. Treasury $ 98,151   $ 172   $ —   $ 98,323   U.S. government agencies 50,000   —   ( 2,346 ) 47,654   Municipal 201,701   1,392   ( 2,881 ) 200,212   Corporate notes: Financial issuers 83,997   —   ( 4,880 ) 79,117   Other 1,000   —   —   1,000   Mortgage-backed: (1) Residential mortgage-backed securities 3,694,382   8,143   ( 394,844 ) 3,307,681   Commercial (multi-family) mortgage-backed securities 19,088   308   ( 255 ) 19,141   Collateralized mortgage obligations 172,524   1,537   ( 14,957 ) 159,104   Total available-for-sale securities $ 4,320,843   $ 11,552   $ ( 420,163 ) $ 3,912,232   Held-to-maturity securities U.S. government agencies $ 314,578   $ —   $ ( 56,198 ) $ 258,380   Municipal 165,141   488   ( 2,910 ) 162,719   Mortgage-backed: (1) Residential mortgage-backed securities 2,915,018   5,541   ( 485,115 ) 2,435,444   Commercial (multi-family) mortgage-backed securities 6,379   40   ( 126 ) 6,293   Collateralized mortgage obligations 219,758   1,457   ( 17,303 ) 203,912   Corporate notes 57,025   —   ( 1,953 ) 55,072   Total held-to-maturity securities $ 3,677,899   $ 7,526   $ ( 563,605 ) $ 3,121,820   Less: Allowance for credit losses ( 479 ) Held-to-maturity securities, net of allowance for credit losses $ 3,677,420   Equity securities with readily determinable fair value $ 127,700   $ 4,313   $ ( 6,703 ) $ 125,310   (1) None of our mortgage-backed securities are subprime. Equity securities without readily determinable fair values totaled $ 67.8 million as of September 30, 2025. Equity securities without readily determinable fair values are included as part of accrued interest receivable and other assets in the Company’s Consolidated Statements of Condition. The Company monitors its equity investments without readily determinable fair values to identify potential transactions that may indicate an observable price change in orderly transactions for the identical or a similar investment of the same issuer, requiring adjustment to its carrying amount. During the three months ended September 30, 2025, the Company recorded no adjustment related to such observable price changes. During the nine months ended September 30, 2025, the Company recorded no upward adjustment and a downward adjustment of $ 20,000 related to such observable price changes. During the three and nine months ended September 30, 2024, the Company recorded no upward or downward adjustments related to such observable price changes. The Company conducts a quarterly assessment of its equity securities without readily determinable fair values to determine whether impairment exists in such securities, considering, among other factors, the nature of the securities, financial condition of the issuer and expected future cash flows. During the three and nine months ended September 30, 2025, the Company recorded $ 570,000 and $ 1.6  million impairment of equity securities without readily determinable fair values. During the three months ended September 30, 2024, the Company recorded no impairment of equity securities without readily determinable fair values. During the nine months ended September 30, 2024, the Company recorded $ 3.7 million impairment of equity securities without readily determinable fair values. 11 Table of Contents The following table presents the portion of the Company’s available-for-sale investment securities portfolios that have gross unrealized losses, reflecting the length of time that individual securities have been in a continuous unrealized loss position at September 30, 2025: Continuous unrealized losses existing for less than 12 months Continuous unrealized losses existing for greater than 12 months Total (In thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Available-for-sale securities U.S. Treasury $ —   $ —   $ —   $ —   $ —   $ —   U.S. government agencies —   —   46,511   ( 3,489 ) 46,511   ( 3,489 ) Municipal 27,180   ( 276 ) 45,372   ( 1,876 ) 72,552   ( 2,152 ) Corporate notes: Financial issuers —   —   79,372   ( 2,628 ) 79,372   ( 2,628 ) Other —   —   1,000   ( 0 ) 1,000   ( 0 ) Mortgage-backed: (1) Residential mortgage-backed securities 746,985   ( 3,625 ) 2,174,994   ( 416,350 ) 2,921,979   ( 419,975 ) Commercial (multi-family) mortgage-backed securities 179,691   ( 4,574 ) 7,594   ( 562 ) 187,285   ( 5,136 ) Collateralized mortgage obligations 31,196   ( 102 ) 63,054   ( 16,694 ) 94,250   ( 16,796 ) Total available-for-sale securities $ 985,052   $ ( 8,577 ) $ 2,417,897   $ ( 441,599 ) $ 3,402,949   $ ( 450,176 ) (1) None of our mortgage-backed securities are subprime. The Company conducts a regular assessment of its investment securities to determine whether securities are experiencing credit losses. Factors for consideration include the nature of the securities, credit ratings or financial condition of the issuer, the extent of the unrealized loss, expected cash flows, market conditions and the Company’s ability to hold the securities through the anticipated recovery period. The Company does not consider available-for-sale securities with unrealized losses at September 30, 2025 to be experiencing credit losses and recognized no resulting allowance for credit losses for such individually assessed credit losses. The Company does not intend to sell these investments and it is more likely than not that the Company will not be required to sell these investments before recovery of the amortized cost bases, which may be the maturity dates of the securities. The unrealized losses within each category have occurred as a result of changes in interest rates, market spreads and market conditions subsequent to purchase. Available-for-sale securities with continuous unrealized losses existing for more than twelve months at September 30, 2025 were primarily mortgage-backed securities with unrealized losses due to increased market rates subsequent to the date the securities were purchased. See Note (7) “Allowance for Credit Losses” in Item 1 of this report for further discussion regarding any credit losses associated with held-to-maturity securities at September 30, 2025. 12 Table of Contents The following table provides information as to the amount of gross gains and losses, adjustments and impairment on investment securities recognized in earnings and proceeds received through the sale or call of investment securities: Three months ended September 30, Nine months ended September 30, (In thousands) 2025 2024 2025 2024 Realized gains on investment securities $ 3,563   $ 222   $ 3,846   $ 2,582   Realized losses on investment securities ( 2,689 ) ( 144 ) ( 3,313 ) ( 273 ) Net realized gains on investment securities 874   78   533   2,309   Unrealized gains on equity securities with readily determinable fair value 3,352   3,126   8,689   4,234   Unrealized losses on equity securities with readily determinable fair value ( 684 ) ( 15 ) ( 741 ) ( 2,579 ) Net unrealized gains on equity securities with readily determinable fair value 2,668   3,111   7,948   1,655   Downward adjustments of equity securities without readily determinable fair values —   —   ( 20 ) —   Impairment of equity securities without readily determinable fair values ( 570 ) —   ( 1,643 ) ( 3,731 ) Adjustment and impairment, net, of equity securities without readily determinable fair values ( 570 ) —   ( 1,663 ) ( 3,731 ) Gains on investment securities, net $ 2,972   $ 3,189   $ 6,818   $ 233   The amortized cost and fair value of available-for-sale and held-to-maturity investment securities as of September 30, 2025, December 31, 2024 and September 30, 2024, by contractual maturity, are shown in the following table. Contractual maturities may differ from actual maturities as borrowers may have the right to call or repay obligations with or without call or prepayment penalties. Mortgage-backed securities are not included in the maturity categories in the following maturity summary as actual maturities may differ from contractual maturities because the underlying mortgages may be called or prepaid without penalties: September 30, 2025 December 31, 2024 September 30, 2024 (In thousands) Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Available-for-sale securities Due in one year or less $ 58,284   $ 58,315   $ 89,578   $ 89,392   $ 150,539   $ 150,627   Due in one to five years 160,939   159,081   157,883   153,325   168,856   164,650   Due in five to ten years 89,505   87,359   89,125   84,240   91,620   89,220   Due after ten years 26,992   24,408   24,674   21,650   23,834   21,809   Mortgage-backed 5,366,629   4,944,961   4,364,279   3,792,875   3,885,994   3,485,926   Total available-for-sale securities $ 5,702,349   $ 5,274,124   $ 4,725,539   $ 4,141,482   $ 4,320,843   $ 3,912,232   Held-to-maturity securities Due in one year or less $ 44,853   $ 44,288   $ 18,929   $ 18,658   $ 12,026   $ 11,883   Due in one to five years 81,277   81,174   110,897   108,056   110,330   108,416   Due in five to ten years 91,067   87,541   71,846   70,277   84,580   83,918   Due after ten years 302,624   245,188   329,734   258,379   329,808   271,954   Mortgage-backed 2,918,980   2,402,779   3,082,314   2,455,180   3,141,155   2,645,649   Total held-to-maturity securities $ 3,438,801   $ 2,860,970   $ 3,613,720   $ 2,910,550   $ 3,677,899   $ 3,121,820   Less: Allowance for credit losses ( 395 ) ( 457 ) ( 479 ) Held-to-maturity securities, net of allowance for credit losses $ 3,438,406   $ 3,613,263   $ 3,677,420   Securities having a carrying value of $ 8.0 billion at September 30, 2025 as well as securities having a carrying value of $ 6.9 billion and $ 7.2 billion at December 31, 2024 and September 30, 2024, respectively, were pledged as collateral for public deposits, trust deposits, Federal Home Loan Bank (“FHLB”) advances, Federal Reserve Bank (“FRB”) discount window, securities sold under repurchase agreements and derivatives. At September 30, 2025, there were no securities of a single issuer, other than U.S. government-sponsored agency securities, which exceeded 10% of shareholders’ equity. 13 Table of Contents (6) Loans The following table shows the Company’s loan portfolio by category as of the dates shown: September 30, December 31, September 30, (Dollars in thousands) 2025 2024 2024 Balance: Commercial $ 16,544,342   $ 15,574,551   $ 15,247,693   Commercial real estate 13,619,207   12,903,944   12,793,417   Home equity 484,202   445,028   427,043   Residential real estate 4,143,870   3,612,765   3,388,038   Premium finance receivables—property & casualty 8,366,292   7,272,042   7,131,681   Premium finance receivables—life insurance 8,758,553   8,147,145   7,996,899   Consumer and other 147,016   99,562   82,676       Total loans, net of unearned income $ 52,063,482   $ 48,055,037   $ 47,067,447   Mix: Commercial 32   % 32   % 33   % Commercial real estate 26   27   27   Home equity 1   1   1   Residential real estate 8   8   7   Premium finance receivables—property & casualty 16   15   15   Premium finance receivables—life insurance 17   17   17   Consumer and other 0   0   0   Total loans, net of unearned income 100   % 100   % 100   % The Company’s loan portfolio is generally comprised of loans to consumers and small to medium-sized businesses, which, for the commercial and commercial real estate portfolios, are located primarily within the geographic market areas that the banks serve. Various niche lending businesses, including franchise lending and insurance agency lending, operate on a national level. The premium finance receivables portfolios are made to customers throughout the United States and Canada. The Company strives to maintain a loan portfolio that is diverse in terms of loan type, industry, borrower, and geographic concentrations. Such diversification reduces the exposure to economic downturns that may occur in different segments of the economy or in different industries. Certain premium finance receivables are recorded net of unearned income. The unearned income portions of such premium finance receivables were $ 272.0  million at September 30, 2025, $ 267.7 million at December 31, 2024 and $ 266.1 million at September 30, 2024. Total loans, excluding purchased credit deteriorated (“PCD”) loans, include net deferred loan fees and costs and fair value purchase accounting adjustments totaling $ 76.5 million at September 30, 2025, $ 78.2 million at December 31, 2024 and $ 79.4 million at September 30, 2024. It is the policy of the Company to review each prospective credit in order to determine the appropriateness and, when required, the adequacy of security or collateral necessary to obtain when making a loan. The type of collateral, when required, will vary from liquid assets to real estate. The Company seeks to ensure access to collateral, in the event of default, through adherence to state lending laws and the Company’s credit monitoring procedures. (7) Allowance for Credit Losses In accordance with ASC 326, the Company is required to measure the allowance for credit losses of financial assets with similar risk characteristics on a collective or pooled basis. In considering the segmentation of financial assets measured at amortized cost into pools, the Company considered various risk characteristics in its analysis. Generally, the segmentation utilized represents the level at which the Company develops and documents its systematic methodology to determine the allowance for credit losses for the financial assets held at amortized cost, specifically the Company's loan portfolio and debt securities classified as held-to-maturity. Descriptions of the Company’s loan portfolio segments and major debt security types are included in Note (5) “Allowance for Credit Losses” of the 2024 Form 10-K. 14 Table of Contents In accordance with ASC 326, the Company elected to not measure an allowance for credit losses on accrued interest. As such accrued interest is written off in a timely manner when deemed uncollectible. Any such write-off of accrued interest will reverse previously recognized interest income. In addition, the Company elected to not include accrued interest within presentation and disclosures of the carrying amount of financial assets held at amortized cost. This election is applicable to the various disclosures included within the Company's financial statements. Accrued interest related to financial assets held at amortized cost is included within accrued interest receivable and other assets within the Company's Consolidated Statements of Condition and totaled $ 342.4 million at September 30, 2025, $ 332.8 million at December 31, 2024, and $ 351.5 million at September 30, 2024. The tables below show the aging of the Company’s loan portfolio by the segmentation noted above at September 30, 2025, December 31, 2024 and September 30, 2024: As of September 30, 2025 90+ days and still accruing 60-89 days past due 30-59 days past due (In thousands) Nonaccrual Current Total Loans Loan Balances (includes PCD): Commercial $ 66,577   $ —   $ 12,190   $ 36,136   $ 16,429,439   $ 16,544,342   Commercial real estate Construction and development 3,227   —   630   40,276   2,614,020   2,658,153   Non-construction 24,975   —   13,489   42,779   10,879,811   10,961,054   Home equity 1,295   —   246   2,294   480,367   484,202   Residential real estate, excluding early buy-out loans 28,942   —   8,829   95   3,981,180   4,019,046   Premium finance receivables—property & casualty 24,512   13,006   23,527   38,133   8,267,114   8,366,292   Premium finance receivables—life insurance —   —   34,016   34,506   8,690,031   8,758,553   Consumer and other 38   60   49   159   146,710   147,016   Total loans, net of unearned income, excluding early buy-out loans $ 149,566   $ 13,066   $ 92,976   $ 194,378   $ 51,488,672   $ 51,938,658   Early buy-out loans guaranteed by U.S. government agencies (1) —   47,374   —   —   77,450   124,824   Total loans, net of unearned income $ 149,566   $ 60,440   $ 92,976   $ 194,378   $ 51,566,122   $ 52,063,482   As of December 31, 2024 90+ days and still accruing 60-89 days past due 30-59 days past due (In thousands) Nonaccrual Current Total Loans Loan Balances (includes PCD): Commercial $ 73,490   $ 104   $ 54,844   $ 92,551   $ 15,353,562   $ 15,574,551   Commercial real estate Construction and development 2,282   —   1,339   4,634   2,425,826   2,434,081   Non-construction 18,760   —   9,182   26,132   10,415,789   10,469,863   Home equity 1,117   —   1,233   2,148   440,530   445,028   Residential real estate, excluding early buy-out loans 23,762   —   5,708   18,917   3,407,622   3,456,009   Premium finance receivables—property & casualty 28,797   16,031   19,042   68,219   7,139,953   7,272,042   Premium finance receivables—life insurance 6,431   —   72,963   36,405   8,031,346   8,147,145   Consumer and other 2   47   59   882   98,572   99,562   Total loans, net of unearned income, excluding early buy-out loans $ 154,641   $ 16,182   $ 164,370   $ 249,888   $ 47,313,200   $ 47,898,281   Early buy-out loans guaranteed by U.S. government agencies (1) —   33,952   618   2,335   119,851   156,756   Total loans, net of unearned income $ 154,641   $ 50,134   $ 164,988   $ 252,223   $ 47,433,051   $ 48,055,037   (1) Early buy-out loans are insured or guaranteed by the Federal Housing Administration (FHA) or the U.S. Department of Veterans Affairs, subject to indemnifications and insurance limits for certain loans. 15 Table of Contents As of September 30, 2024 90+ days and still accruing 60-89 days past due 30-59 days past due (In thousands) Nonaccrual Current Total Loans Loan Balances (includes PCD): Commercial $ 63,826   $ 20   $ 32,560   $ 46,057   $ 15,105,230   $ 15,247,693   Commercial real estate Construction and development 2,284   —   757   1,798   2,398,851   2,403,690   Non-construction 39,787   225   12,682   46,548   10,290,485   10,389,727   Home equity 1,122   —   1,035   2,580   422,306   427,043   Residential real estate, excluding early buy-out loans 17,959   —   6,364   2,160   3,226,166   3,252,649   Premium finance receivables—property & casualty 36,079   18,235   18,740   30,204   7,028,423   7,131,681   Premium finance receivables—life insurance —   —   10,902   74,432   7,911,565   7,996,899   Consumer and other 2   148   22   264   82,240   82,676   Total loans, net of unearned income, excluding early buy-out loans $ 161,059   $ 18,628   $ 83,062   $ 204,043   $ 46,465,266   $ 46,932,058   Early buy-out loans guaranteed by U.S. government agencies (1) —   43,358   150   —   91,881   135,389   Total loans, net of unearned income $ 161,059   $ 61,986   $ 83,212   $ 204,043   $ 46,557,147   $ 47,067,447   (1) Early buy-out loans are insured or guaranteed by the Federal Housing Administration (FHA) or the U.S. Department of Veterans Affairs, subject to indemnifications and insurance limits for certain loans. Credit Quality Indicators Credit quality indicators, specifically the Company's internal risk rating systems, reflect how the Company monitors credit losses and represents factors used by the Company when measuring the allowance for credit losses. Descriptions of the Company’s credit quality indicators by financial asset are included in Note (5) “Allowance for Credit Losses” of the 2024 Form 10-K. The table below shows the Company’s loan portfolio by credit quality indicator and year of origination at September 30, 2025: Year of Origination Revolving Total (In thousands) 2025 2024 2023 2022 2021 Prior Revolving to Term Loans Loan Balances: Commercial Pass $ 2,829,487   $ 2,846,915   $ 1,744,488   $ 1,266,672   $ 831,328   $ 1,108,613   $ 5,310,722   $ 40,053   $ 15,978,278   Special mention 11,668   41,624   46,403   18,943   31,703   38,400   128,153   360   317,254   Substandard accrual 2,436   16,847   26,199   39,289   35,639   22,204   38,008   1,611   182,233   Substandard nonaccrual/doubtful 951   4,454   7,778   36,977   10,359   3,906   900   1,252   66,577   Total commercial, industrial and other $ 2,844,542   $ 2,909,840   $ 1,824,868   $ 1,361,881   $ 909,029   $ 1,173,123   $ 5,477,783   $ 43,276   $ 16,544,342   Construction and development Pass $ 207,055   $ 736,531   $ 619,287   $ 604,281   $ 73,736   $ 107,992   $ 15,039   $ 894   $ 2,364,815   Special mention —   —   29,645   194,759   17,908   15,800   —   —   258,112   Substandard accrual —   —   12,656   —   —   15,445   3,898   —   31,999   Substandard nonaccrual/doubtful —   —   1,001   1,321   —   905   —   —   3,227   Total construction and development $ 207,055   $ 736,531   $ 662,589   $ 800,361   $ 91,644   $ 140,142   $ 18,937   $ 894   $ 2,658,153   Non-construction Pass $ 1,436,193   $ 1,313,159   $ 1,314,216   $ 1,748,779   $ 1,290,468   $ 3,262,179   $ 225,790   $ 1,692   $ 10,592,476   Special mention 2,080   1,189   63,480   17,694   29,072   35,492   1,414   —   150,421   Substandard accrual —   18,799   1,256   68,472   51,608   52,211   836   —   193,182   Substandard nonaccrual/doubtful —   —   1,605   305   —   23,065   —   —   24,975   Total non-construction $ 1,438,273   $ 1,333,147   $ 1,380,557   $ 1,835,250   $ 1,371,148   $ 3,372,947   $ 228,040   $ 1,692   $ 10,961,054   Home equity Pass $ —   $ 236   $ 68   $ 353   $ 291   $ 13,067   $ 446,524   $ 8,237   $ 468,776   Special mention —   42   —   402   —   2,303   6,187   —   8,934   Substandard accrual —   —   15   19   98   2,979   2,086   —   5,197   Substandard nonaccrual/doubtful —   —   —   88   132   1,075   —   —   1,295   Total home equity $ —   $ 278   $ 83   $ 862   $ 521   $ 19,424   $ 454,797   $ 8,237   $ 484,202   Residential real estate Early buy-out loans guaranteed by U.S. government agencies $ 192   $ 4,551   $ 7,545   $ 5,280   $ 6,229   $ 101,027   $ —   $ —   $ 124,824   Pass 833,494   795,118   427,935   762,583   719,435   420,044   —   —   3,958,609   Special mention —   2,027   5,793   4,745   1,808   6,822   —   —   21,195   16 Table of Contents Substandard accrual 60   136   913   3,799   1,833   3,559   —   —   10,300   Substandard nonaccrual/doubtful —   1,214   5,463   7,772   6,475   8,018   —   —   28,942   Total residential real estate $ 833,746   $ 803,046   $ 447,649   $ 784,179   $ 735,780   $ 539,470   $ —   $ —   $ 4,143,870   Premium finance receivables - property and casualty Pass $ 8,030,161   $ 180,763   $ 3,906   $ 1,113   $ 1,268   $ —   $ —   $ —   $ 8,217,211   Special mention 102,653   4,466   9   —   —   —   —   —   107,128   Substandard accrual 15,393   2,044   —   3   1   —   —   —   17,441   Substandard nonaccrual/doubtful 13,542   10,941   25   3   1   —   —   —   24,512   Total premium finance receivables - property and casualty $ 8,161,749   $ 198,214   $ 3,940   $ 1,119   $ 1,270   $ —   $ —   $ —   $ 8,366,292   Premium finance receivables - life (1) Pass $ 437,422   $ 720,916   $ 541,345   $ 711,083   $ 1,057,431   $ 5,290,356   $ —   $ —   $ 8,758,553   Special mention —   —   —   —   —   —   —   —   —   Substandard accrual —   —   —   —   —   —   —   —   —   Substandard nonaccrual/doubtful —   —   —   —   —   —   —   —   —   Total premium finance receivables - life $ 437,422   $ 720,916   $ 541,345   $ 711,083   $ 1,057,431   $ 5,290,356   $ —   $ —   $ 8,758,553   Consumer and other Pass $ 5,180   $ 2,524   $ 1,858   $ 330   $ 622   $ 63,148   $ 72,998   $ —   $ 146,660   Special mention 25   38   32   81   —   109   12   —   297   Substandard accrual —   2   —   —   —   14   5   —   21   Substandard nonaccrual/doubtful —   2   —   —   —   36   —   —   38   Total consumer and other $ 5,205   $ 2,566   $ 1,890   $ 411   $ 622   $ 63,307   $ 73,015   $ —   $ 147,016   Total loans Early buy-out loans guaranteed by U.S. government agencies $ 192   $ 4,551   $ 7,545   $ 5,280   $ 6,229   $ 101,027   $ —   $ —   $ 124,824   Pass 13,778,992   6,596,162   4,653,103   5,095,194   3,974,579   10,265,399   6,071,073   50,876   50,485,378   Special mention 116,426   49,386   145,362   236,624   80,491   98,926   135,766   360   863,341   Substandard accrual 17,889   37,828   41,039   111,582   89,179   96,412   44,833   1,611   440,373   Substandard nonaccrual/doubtful 14,493   16,611   15,872   46,466   16,967   37,005   900   1,252   149,566   Total loans $ 13,927,992   $ 6,704,538   $ 4,862,921   $ 5,495,146   $ 4,167,445   $ 10,598,769   $ 6,252,572   $ 54,099   $ 52,063,482   Gross write offs Three months ended September 30, 2025 $ 7,305   $ 494   $ 1,457   $ 4,748   $ 12,046   $ 2,796   $ —   $ —   $ 28,846   Nine months ended September 30, 2025 $ 8,709   $ 15,297   $ 5,246   $ 8,129   $ 14,193   $ 13,216   $ —   $ —   $ 64,790   (1) For premium finance receivables - life, the year of origination represents when the borrower’s master loan agreement was initially established. Held-to-maturity debt securities The Company conducts an assessment of its investment securities, including those classified as held-to-maturity, at the time of purchase and on at least an annual basis to ensure such investment securities remain within appropriate levels of risk and continue to perform satisfactorily in fulfilling its obligations. The Company considers, among other factors, the nature of the securities and credit ratings or financial condition of the issuer. If available, the Company obtains a credit rating for issuers from a Nationally Recognized Statistical Rating Organization (“NRSRO”) for consideration. If no such rating is available for an issuer, the Company performs an internal rating based on the scale utilized within the loan portfolio. For purposes of the table below, the Company has converted any issuer rating from an NRSRO into the Company’s internal ratings based on Investment Policy and review by the Company’s management. 17 Table of Contents As of September 30, 2025 Year of Origination Total (In thousands) 2025 2024 2023 2022 2021 Prior Balance Amortized Cost Balances: U.S. government agencies 1-4 internal grade $ —   $ —   $ —   $ 135,000   $ 147,827   $ 30,713   $ 313,540   5-7 internal grade —   —   —   —   —   —   —   8-10 internal grade —   —   —   —   —   —   —   Total U.S. government agencies $ —   $ —   $ —   $ 135,000   $ 147,827   $ 30,713   $ 313,540   Municipal 1-4 internal grade $ —   $ —   $ 4,092   $ 1,028   $ 6,742   $ 141,784   $ 153,646   5-7 internal grade —   —   —   —   —   2,124   2,124   8-10 internal grade —   —   —   —   —   —   —   Total municipal $ —   $ —   $ 4,092   $ 1,028   $ 6,742   $ 143,908   $ 155,770   Mortgage-backed securities 1-4 internal grade $ —   $ —   $ 296,804   $ 496,580   $ 2,125,596   $ —   $ 2,918,980   5-7 internal grade —   —   —   —   —   —   —   8-10 internal grade —   —   —   —   —   —   —   Total mortgage-backed securities $ —   $ —   $ 296,804   $ 496,580   $ 2,125,596   $ —   $ 2,918,980   Corporate notes 1-4 internal grade $ —   $ —   $ —   $ 14,972   $ —   $ 35,539   $ 50,511   5-7 internal grade —   —   —   —   —   —   —   8-10 internal grade —   —   —   —   —   —   —   Total corporate notes $ —   $ —   $ —   $ 14,972   $ —   $ 35,539   $ 50,511   Total held-to-maturity securities $ 3,438,801   Less: Allowance for credit losses ( 395 ) Held-to-maturity securities, net of allowance for credit losses $ 3,438,406   Measurement of Allowance for Credit Losses The Company's allowance for credit losses consists of the allowance for loan losses, the allowance for unfunded commitment losses and the allowance for held-to-maturity debt security losses. In accordance with ASC 326, the Company measures the allowance for credit losses at the time of origination or purchase of a financial asset, representing an estimate of lifetime expected credit losses on the related asset. When developing its estimate, the Company considers available information relevant to assessing the collectability of cash flows, from both internal and external sources. Historical credit loss experience is one input in the estimation process as well as inputs relevant to current conditions and reasonable and supportable forecasts. In considering past events, the Company considers the relevance, or lack thereof, of historical information due to changes in such things as financial asset underwriting or collection practices, and changes in portfolio mix due to changing business plans and strategies. In considering current conditions and forecasts, the Company considers both the current economic environment and the forecasted direction of the economic environment with emphasis on those factors deemed relevant to or driving changes in expected credit losses. As significant judgment is required, the review of the appropriateness of the allowance for credit losses is performed quarterly by various committees with participation by the Company's executive management. September 30, December 31, September 30, (In thousands) 2025 2024 2024 Allowance for loan losses $ 386,622   $ 364,017   $ 360,279   Allowance for unfunded lending-related commitments losses 67,569   72,586   75,435   Allowance for loan losses and unfunded lending-related commitments losses 454,191   436,603   435,714   Allowance for held-to-maturity securities losses 395   457   479   Allowance for credit losses $ 454,586   $ 437,060   $ 436,193   The allowance for credit losses is measured on a collective or pooled basis when similar risk characteristics exist, based upon the segmentation discussed above. The Company utilizes modeling methodologies that estimate lifetime credit loss rates on each pool. These methodologies include estimating the probability of default and loss given default on the commercial and commercial real estate segments, using the weighted-average remaining maturity methodology for the residential real estate, home equity, and consumer segments, and utilizing an assumption-based approach focusing on historical loss rates for the premium finance receivables segments. Historical credit loss history is adjusted for reasonable and supportable forecasts developed by the Company on a quantitative or qualitative basis and incorporates third party economic forecasts. Reasonable 18 Table of Contents and supportable forecasts consider the macroeconomic factors that are most relevant to evaluating and predicting expected credit losses in the Company's financial assets. Currently, the Company utilizes an eight quarter forecast period using a single macroeconomic scenario provided by a third party and reviewed within the Company's governance structure. For periods beyond the ability to develop reasonable and supportable forecasts, the Company reverts to historical loss rates at an input level, straight-line over a four quarter reversion period. Expected credit losses are measured over the contractual term of the financial asset with consideration of expected prepayments. Expected extensions, renewals or modifications of the financial asset are considered when the expected extension, renewal or modification is contained within the existing agreement and is not unconditionally cancelable. The methodologies discussed above are applied to both current asset balances on the Company's Consolidated Statements of Condition and off-balance sheet commitments (i.e. unfunded lending-related commitments). Assets that do not share similar risk characteristics with a pool are assessed for the allowance for credit losses on an individual basis. These typically include assets experiencing financial difficulties, including assets rated as substandard nonaccrual and doubtful. If foreclosure is probable or the asset is considered collateral-dependent, expected credit losses are measured based upon the fair value of the underlying collateral adjusted for selling costs, if appropriate. Underlying collateral across the Company's segments consist primarily of real estate, land and construction assets as well as general business assets of the borrower. As of September 30, 2025, excluding loans carried at fair value, substandard nonaccrual loans totaling $ 66.4 million in carrying balance had no related allowance for credit losses. The Company does not measure an allowance for credit losses on accrued interest receivable balances because these balances are written off in a timely manner as a reduction to interest income when assets are placed on nonaccrual status. Loan portfolios A summary of activity in the allowance for credit losses, specifically for the loan portfolio (i.e. allowance for loan losses and allowance for unfunded commitment losses), for the three and nine months ended September 30, 2025 and September 30, 2024 is as follows: Three months ended September 30, 2025 Commercial Real Estate Home  Equity Residential Real Estate Premium Finance Receivables Consumer and Other Total Loans (In thousands) Commercial Allowance for credit losses at beginning of period $ 194,568   $ 224,358   $ 9,221   $ 11,455   $ 16,612   $ 849   $ 457,063   Other adjustments —   —   —   —   ( 88 ) —   ( 88 ) Charge-offs ( 21,597 ) ( 144 ) ( 27 ) ( 26 ) ( 6,878 ) ( 174 ) ( 28,846 ) Recoveries 1,449   241   104   1   2,459   37   4,291   Provision for credit losses - Other 15,056   6,022   ( 69 ) 583   ( 156 ) 335   21,771   Allowance for credit losses at period end $ 189,476   $ 230,477   $ 9,229   $ 12,013   $ 11,949   $ 1,047   $ 454,191   By measurement method: Individually measured $ 29,747   $ 9,688   $ —   $ 60   $ —   $ 3   $ 39,498   Collectively measured 159,729   220,789   9,229   11,953   11,949   1,044   414,693   Loans at period end Individually measured $ 66,576   $ 28,203   $ 1,295   $ 28,854   $ —   $ 38   $ 124,966   Collectively measured 16,477,766   13,591,004   482,907   3,985,423   17,124,845   146,978   51,808,923   Loans held at fair value —   —   —   129,593   —   129,593   19 Table of Contents Three months ended September 30, 2024 Commercial Commercial Real Estate Home  Equity Residential Real Estate Premium Finance Receivables Consumer and Other Total Loans (In thousands) Allowance for credit losses at beginning of period $ 181,991   $ 223,728   $ 7,242   $ 8,773   $ 14,746   $ 589   $ 437,069   Other adjustments —   —   —   —   30   —   30   Charge-offs ( 22,975 ) ( 95 ) —   —   ( 7,794 ) ( 154 ) ( 31,018 ) Recoveries 649   30   101   5   3,477   21   4,283   Provision for credit losses - Other 7,128   ( 4,162 ) 134   268   3,284   147   6,799   Provision for credit losses - Day 1 on non-PCD assets acquired during the period 2,967   10,540   1,344   638   —   58   15,547   Initial allowance for credit losses recognized on PCD assets acquired during the period 1,838   1,103   2   61   —   —   3,004   Allowance for credit losses at period end $ 171,598   $ 231,144   $ 8,823   $ 9,745   $ 13,743   $ 661   $ 435,714   By measurement method: Individually measured $ 21,573   $ 5,958   $ 50   $ 48   $ —   $ 1   $ 27,630   Collectively measured 150,025   225,186   8,773   9,697   13,743   660   408,084   Loans at period end Individually measured $ 63,826   $ 42,071   $ 1,122   $ 17,565   $ —   $ 2   $ 124,586   Collectively measured 15,183,867   12,751,346   425,921   3,232,435   15,128,580   82,674   46,804,823   Loans held at fair value —   —   —   138,038   —   —   138,038   Nine months ended September 30, 2025 Commercial Real Estate Home  Equity Residential Real Estate Premium Finance Receivables Consumer and Other Total Loans (In thousands) Commercial Allowance for credit losses at beginning of period $ 175,837   $ 222,856   $ 8,943   $ 10,335   $ 17,820   $ 812   $ 436,603   Other adjustments —   —   —   —   96   —   96   Charge-offs ( 37,467 ) ( 6,309 ) ( 138 ) ( 26 ) ( 20,350 ) ( 500 ) ( 64,790 ) Recoveries 4,124   263   350   139   9,281   98   14,255   Provision for credit losses - Other 46,982   13,667   74   1,565   5,102   637   68,027   Allowance for credit losses at period end $ 189,476   $ 230,477   $ 9,229   $ 12,013   $ 11,949   $ 1,047   $ 454,191   Nine months ended September 30, 2024 Commercial Real Estate Home  Equity Residential Real Estate Premium Finance Receivables Consumer and Other Total Loans (In thousands) Commercial Allowance for credit losses at beginning of period $ 169,604   $ 223,853   $ 7,116   $ 13,133   $ 13,069   $ 490   $ 427,265   Other adjustments —   —   —   —   ( 20 ) —   ( 20 ) Charge-offs ( 43,774 ) ( 21,090 ) ( 74 ) ( 61 ) ( 24,218 ) ( 398 ) ( 89,615 ) Recoveries 2,078   151   165   15   8,667   68   11,144   Provision for credit losses - Other 38,885   16,587   270   ( 4,041 ) 16,245   443   68,389   Provision for credit losses - Day 1 on non-PCD assets acquired during the period 2,967   10,540   1,344   638   —   58   15,547   Initial allowance for credit losses recognized on PCD assets acquired during the period 1,838   1,103   2   61   —   —   3,004   Allowance for credit losses at period end $ 171,598   $ 231,144   $ 8,823   $ 9,745   $ 13,743   $ 661   $ 435,714   For the three and nine months ended September 30, 2025, the Company recognized approximately $ 21.8 million and $ 68.0 million of provision for credit losses, respectively, related to loans and lending agreements. The provision for each period was primarily the result of losses experienced in the Commercial and Premium Finance Receivables portfolios along with growth across various segments, which was offset by improved macroeconomic forecasts related to Baa credit spread. However, uncertainties remain regarding future economic performance and macroeconomic forecasts utilized in the measurement of the allowance for credit losses as of September 30, 2025, thus a macroeconomic uncertainty qualitative overlay continued to be applied in the third quarter of 2025. Net charge-offs in the three and nine month periods ended September 30, 2025, totaled $ 24.6 million and $ 50.5 million, respectively. Held-to-maturity debt securities 20 Table of Contents The allowance for credit losses on the Company’s held-to-maturity debt securities is presented as a reduction to the amortized cost basis of held-to-maturity securities on the Company's Consolidated Statements of Condition. For the three and nine month periods ended September 30, 2025, the Company recognized approximately $( 2,000 ) and $( 61,000 ), respectively, of provision for credit losses related to held-to-maturity securities. At September 30, 2025, the Company did not identify any held-to-maturity debt securities within its portfolio that would require a charge-off. Loan Modifications to Borrowers Experiencing Financial Difficulties The Company’s approach to restructuring or modifying loans is built on its credit risk rating system, which requires credit management personnel to assign a credit risk rating to each loan. In each case, the loan officer is responsible for recommending a credit risk rating for each loan and ensuring the credit risk ratings are appropriate. These credit risk ratings are then reviewed and approved by the bank’s chief credit officer and/or concurrence credit officer. Credit risk ratings are determined by evaluating a number of factors, including a borrower’s financial strength, cash flow coverage, collateral protection and guarantees. The Company’s credit risk rating scale is one through ten with higher scores indicating higher risk. In the case of loans rated six or worse following modification, the Company’s Managed Assets Division evaluates the loan and the credit risk rating and determines that the loan has been restructured to be reasonably assured of repayment and of performance according to the modified terms and is supported by a current, well-documented credit assessment of the borrower’s financial condition and prospects for repayment under the revised terms. Based on the Company’s credit risk rating system, it considers that borrowers whose credit risk rating is 5 or better are not experiencing financial difficulties. Restructurings may arise when, due to financial difficulties experienced by the borrower, the Company obtains through physical possession one or more collateral assets in satisfaction of all or part of an existing credit. Once possession is obtained, the Company reclassifies the appropriate portion of the remaining balance of the credit from loans to other real estate owned (“OREO”), which is included within other assets in the Consolidated Statements of Condition. For any residential real estate property collateralizing a consumer mortgage loan, the Company is considered to possess the related collateral only if legal title is obtained upon completion of foreclosure, or the borrower conveys all interest in the residential real estate property to the Company through completion of a deed in lieu of foreclosure or similar legal agreement. At September 30, 2025, the Company had no foreclosed residential real estate properties included within OREO. Further, the recorded investment in residential mortgage loans secured by residential real estate properties for which foreclosure proceedings are in process totaled $ 67.0 million and $ 40.4 million at September 30, 2025 and 2024, respectively. The tables below presents a summary of the period-end balance of loans to borrowers experiencing financial difficulties during the three and nine months ended September 30, 2025 and 2024: Three Months Ended September 30, 2025 (Dollars in thousands) Total Percentage of Total Class of Loan Extension of Term Reduction of  Interest Rate Interest Only Payments Delay in Contractual Payments Extension of Term and Reduction of Interest Rate Commercial $ 4,791 0.1   % $ 4,464   $ —   $ —   $ —   $ 327   Commercial real estate Construction and development — —   —   —   —   —   —   Non-construction 196 0.0   196   —   —   —   —   Home equity — —   —   —   —   —   —   Residential real estate 392 0.0   287   —   —   —   105   Premium finance receivables—property & casualty — —   —   —   —   —   —   Total loans $ 5,379 0.0   % $ 4,947   $ —   $ —   $ —   $ 432   21 Table of Contents Weighted Average Magnitude of Modifications:  Three Months Ended September 30, 2025  (Dollars in thousands) Total Duration of Extension of Term (months) Reduction of  Interest Rate (bps) Duration of Delay in Contractual Payments (months) Commercial $ 4,791   6 190   —   Commercial real estate Construction and development —   —   —   —   Non-construction 196   6 —   —   Home equity —   —   —   —   Residential real estate 392   11 90   —   Premium finance receivables—property & casualty —   —   —   —   Total loans $ 5,379   7 166   —   Three Months Ended September 30, 2024 (Dollars in thousands) Total Percentage of Total Class of Loan Extension of Term Reduction of  Interest Rate Interest Only Payments Delay in Contractual Payments Extension of Term and Reduction of Interest Rate Commercial $ 1,469 0.0   % $ 1,240   $ 42   $ 17   $ —   $ 170   Commercial real estate - Non-construction 192 0.0   192   —   —   —   —   Residential real estate — —   —   —   —   —   —   Premium finance receivables—property & casualty 1,548 0.0   30   1,457   —   —   61   Total loans $ 3,209 0.0   % $ 1,462   $ 1,499   $ 17   $ —   $ 231   Weighted Average Magnitude of Modifications: Three Months Ended September 30, 2024 (Dollars in thousands) Total Duration of Extension of Term (months) Reduction of  Interest Rate (bps) Duration of Delay in Contractual Payments (months) Commercial $ 1,469   27 —   —  Commercial real estate - Non-construction 192   6 —   —  Residential real estate —   —  —   — Premium finance receivables—property & casualty 1,548   4 —   — Total loans $ 3,209   9 —   —  Nine Months Ended September 30, 2025 (Dollars in thousands) Total Percentage of Total Class of Loan Extension of Term Reduction of  Interest Rate Interest Only Payments Delay in Contractual Payments Extension of Term and Reduction of Interest Rate Commercial $ 15,370   0.2   % $ 14,917   $ 9   $ —   $ —   $ 444   Commercial real estate Construction and development —   —   —   —   —   —   —   Non-construction 196   0.0   196   —   —   —   —   Home equity —   —   —   —   —   —   —   Residential real estate 1,524   0.0   447   276   —   —   801   Premium finance receivables—property & casualty 865   0.0   865   —   —   —   —   Total loans $ 17,955   0.0   $ 16,425   $ 285   $ —   $ —   $ 1,245   22 Table of Contents Weighted Average Magnitude of Modifications: Nine Months Ended September 30, 2025 (Dollars in thousands) Total Duration of Extension of Term (months) Reduction of  Interest Rate (bps) Duration of Delay in Contractual Payments (months) Commercial $ 15,370   7 155   —   Commercial real estate Construction and development —   —   —   —   Non-construction 196   6 —   —   Home equity —   —   —   —   Residential real estate 1,524   11 148   — Premium finance receivables—property & casualty 865   12 —   —   Total loans $ 17,955   8 150   —   Nine Months Ended September 30, 2024 (Dollars in thousands) Total Percentage of Total Class of Loan Extension of Term Reduction of  Interest Rate Interest Only Payments Delay in Contractual Payments Extension of Term and Reduction of Interest Rate Commercial $ 4,687   0.0   % $ 4,195   $ 42   $ 17   $ 97   $ 336   Commercial real estate - Non-construction 1,662   0.0   486   —   319   857   —   Home equity 89   0.0   89   —   —   —   —   Residential real estate 282   0.0   114   168   —   —   —   Premium finance receivables—property & casualty 1,554   0.0   33   1,460   —   —   61   Total loans $ 8,274   0.0   % $ 4,917   $ 1,670   $ 336   $ 954   $ 397   Weighted Average Magnitude of Modifications: Nine months ended September 30, 2024 (Dollars in thousands) Total Duration of Extension of Term (months) Reduction of  Interest Rate (bps) Duration of Delay in Contractual Payments (months) Commercial $ 4,687   35 113 34 Commercial real estate - Non-construction 1,662   29 —   16 Home equity 89   12 —   —  Residential real estate 282   19 201 —  Premium finance receivables—property & casualty $ 1,554   6 86 $ —  Total loans $ 8,274   9 $ 156   18 The Company had commitments of $ 23.9 million and $ 8.6 million as of September 30, 2025 and September 30, 2024, respectively, to lend additional funds to borrowers experiencing financial difficulty and for whom the Company has modified the terms of loans in the form of principal forgiveness, an interest rate reduction, an other-than insignificant payment delay or a term extension during the periods presented. 23 Table of Contents The following table presents a summary of all modified loans for borrowers experiencing financial difficulties and such loans that were in payment default under the restructured terms during the respective periods below: (Dollars in thousands) For the Twelve Months Ended September 30, 2025 Three Months Ended September 30, 2025 Nine Months Ended September 30, 2025 For the Twelve Months Ended September 30, 2024 Three Months Ended September 30, 2024 Nine Months Ended September 30, 2024 Total Payments in Default   (1) Payments in  Default   (1) Total Payments in  Default   (1) Payments in  Default   (1) Commercial $ 20,725   $ 28   $ 142   $ 6,757   $ 42   $ 1,826   Commercial real estate Construction and development —   —   —   2,504   —   —   Non-construction 243   196   196   2,933   —   923   Home equity —   —   —   588   —   203   Residential real estate 1,524   224   920   282   —   541   Premium finance receivables—property & casualty 865   —   865   1,632   47   61   Total loans $ 23,357   $ 448   $ 2,123   $ 14,696   $ 89   $ 3,554   (1) Modified loans considered to be in payment default are over 30 days past due subsequent to the restructuring. (8) Goodwill and Other Acquisition-Related Intangible Assets A summary of the Company’s goodwill assets by reporting unit is presented in the following table: (In thousands) December 31, 2024 Goodwill Acquired Impairment Loss Goodwill Adjustments September 30, 2025 Community banking $ 687,754   $ —   $ —   $ —   $ 687,754   Specialty finance 37,193   —   —   697   37,890   Wealth management 71,995   —   —   —   71,995       Total $ 796,942   $ —   $ —   $ 697   $ 797,639   The specialty finance unit’s goodwill increased $ 697,000 in the first nine months of 2025 as a result of foreign currency translation adjustments related to the prior Canadian acquisitions. The Company assesses each reporting unit’s goodwill for impairment on at least an annual basis and considers potential indicators of impairment at each reporting date between annual goodwill impairment tests. At October 1, 2024, the Company utilized a quantitative approach for its annual goodwill impairment tests of the community banking, specialty finance and wealth management reporting units and determined that no impairment existed at that time. At each reporting date between annual goodwill impairment tests, the Company considers potential indicators of impairment. The Company assessed whether events and circumstances resulted in it being more likely than not that the fair value of any reporting unit was less than its carrying value. Potential impairment indicators considered include the condition of the economy and banking industry; government intervention and regulatory updates; the impact of recent events to financial performance and cost factors of the reporting units; performance of the Company’s stock and other relevant events. At the conclusion of this assessment of all reporting units, the Company determined that as of September 30, 2025, it was more likely than not that the fair value of all reporting units exceeded the respective carrying value of such reporting unit. 24 Table of Contents A summary of acquisition-related intangible assets as of the dates shown and the expected amortization of finite-lived acquisition-related intangible assets as of September 30, 2025 is as follows: (In thousands) September 30, 2025 December 31, 2024 September 30, 2024 Community banking segment: Core deposit intangibles with finite lives: Gross carrying amount $ 158,106   $ 158,106   $ 154,506   Accumulated amortization ( 72,179 ) ( 56,784 ) ( 51,358 )     Net carrying amount $ 85,927   $ 101,322   $ 103,148   Trademark with indefinite lives: Carrying amount 13,800   13,800   13,800   Total net carrying amount $ 99,727   $ 115,122   $ 116,948   Specialty finance segment: Customer list intangibles with finite lives: Gross carrying amount $ 1,960   $ 1,959   $ 1,962   Accumulated amortization ( 1,924 ) ( 1,881 ) ( 1,871 )     Net carrying amount $ 36   $ 78   $ 91   Wealth management segment: Customer list and other intangibles with finite lives: Gross carrying amount $ 26,630   $ 26,630   $ 26,630   Accumulated amortization ( 21,096 ) ( 20,140 ) ( 19,803 )     Net carrying amount $ 5,534   $ 6,490   $ 6,827   Total acquisition-related intangible assets: Gross carrying amount $ 200,496   $ 200,495   $ 196,898   Accumulated amortization ( 95,199 ) ( 78,805 ) ( 73,032 ) Total other acquisition-related intangible assets, net $ 105,297   $ 121,690   $ 123,866   Estimated amortization Actual in nine months ended September 30, 2025 $ 16,394   Estimated remaining in 2025 5,003   Estimated—2026 18,830   Estimated—2027 16,333   Estimated—2028 13,908   Estimated—2029 11,536   The core deposit intangibles recognized in connection with the Company’s bank acquisitions are amortized over a ten-year period on an accelerated basis. The customer list intangibles recognized in connection with the purchase of life insurance premium finance assets in 2009 are being amortized over an 18-year period on an accelerated basis. The customer list and other intangibles recognized in connection with prior acquisitions within the wealth management segment are being amortized over a period of up to ten years on a straight-line or accelerated basis. Indefinite-lived intangible assets consist of certain trade and domain names recognized in connection with prior acquisitions. As indefinite-lived intangible assets are not amortized, the Company assesses impairment on at least an annual basis. Total amortization expense associated with finite-lived acquisition-related intangibles totaled approximately $ 16.4 million and $ 6.3 million for the nine months ended September 30, 2025 and 2024, respectively. 25 Table of Contents (9) Mortgage Servicing Rights (“MSRs”) The following is a summary of the changes in the carrying value of MSRs, accounted for at fair value, for the periods indicated: Three Months Ended Nine Months Ended September 30, September 30, September 30, September 30, (In thousands) 2025 2024 2025 2024 Fair value at beginning of the period $ 193,061   $ 204,610   $ 203,788   $ 192,456   Additions from loans sold with servicing retained 5,829   6,357   16,834   19,959   Estimate of changes in fair value due to: Payoffs, paydowns and repurchases ( 5,604 ) ( 7,328 ) ( 15,856 ) ( 17,248 ) Changes in valuation inputs or assumptions ( 2,348 ) ( 17,331 ) ( 13,828 ) ( 8,859 ) Fair value at end of the period $ 190,938   $ 186,308   $ 190,938   $ 186,308   Unpaid principal balance of mortgage loans serviced for others $ 12,524,131   $ 12,253,361   The Company recognizes MSR assets upon the sale of residential real estate loans to external third parties when it retains the obligation to service the loans and the servicing fee is more than adequate compensation. MSRs are included in other assets in the Consolidated Statements of Condition. The initial recognition of MSR assets from loans sold with servicing retained and subsequent changes in fair value of all MSRs are recognized in mortgage banking revenue . MSRs are subject to changes in value from actual and expected prepayment of the underlying loans. The estimation of fair value related to MSRs is partly impacted by the Company exercising its early buyout options (“EBO”) on eligible loans previously sold to the Government National Mortgage Association (“GNMA”). Under such optional repurchase program, financial institutions acting as servicers are allowed to buy back from the securitized loan pool individual delinquent mortgage loans meeting certain criteria for which the institution was the original transferor of such loans. At the option of the servicer and without prior authorization from GNMA, the servicer may repurchase such delinquent loans for an amount equal to the remaining principal balance of the loan. At the time of such repurchase, any MSR value related to such loans is derecognized. The MSR asset fair value is determined by using a discounted cash flow model that incorporates the objective characteristics of the portfolio as well as subjective valuation parameters that purchasers of servicing would apply to such portfolios sold into the secondary market. The subjective factors include loan prepayment speeds, discount rates, servicing costs and other economic factors. The Company uses a third party to assist in the valuation of MSRs. Periodically, the Company will purchase options for the right to purchase securities not currently held within the banks’ investment portfolios or enter into interest rate swaps in which the Company elects not to designate such derivatives as hedging instruments. These option and swap transactions are designed primarily to economically hedge a portion of the fair value adjustments related to the Company’s MSRs. The gain or loss associated with these derivative contracts is included in mortgage banking revenue. For more information regarding these hedges outstanding as of September 30, 2025 and September 30, 2024, see Note (14) “Derivative Financial Instruments” in Item 1 of this report. 26 Table of Contents (10) Deposits The following table is a summary of deposits as of the dates shown:   (Dollars in thousands) September 30, 2025 December 31, 2024 September 30, 2024 Balance: Non-interest-bearing $ 10,952,146   $ 11,410,018   $ 10,739,132   NOW and interest-bearing demand deposits 6,710,919   5,865,546   5,466,932   Wealth management deposits 1,600,735   1,469,064   1,303,354   Money market 20,270,382   17,975,191   17,713,726   Savings 6,758,743   6,372,499   6,183,249   Time certificates of deposit 10,418,456   9,420,031   9,998,573   Total deposits $ 56,711,381   $ 52,512,349   $ 51,404,966   Mix: Non-interest-bearing 19   % 22   % 21   % NOW and interest-bearing demand deposits 12   11   11   Wealth management deposits 3   3   3   Money market 36   34   34   Savings 12   12   12   Time certificates of deposit 18   18   19   Total deposits 100   % 100   % 100   % Wealth management deposits represent deposit balances (primarily money market accounts) at the Company’s subsidiary banks from brokerage customers of Wintrust Investments, LLC (“Wintrust Investments”), Chicago Deferred Exchange Company (“CDEC”) and trust and asset management customers of the Company. (11) FHLB Advances, Other Borrowings and Subordinated Notes The following table is a summary of FHLB advances, other borrowings and subordinated notes as of the dates shown: (In thousands) September 30, 2025 December 31, 2024 September 30, 2024 FHLB advances $ 3,151,309   $ 3,151,309   $ 3,171,309   Other borrowings: Notes payable 121,368   142,763   149,894   Secured borrowings 401,863   334,934   439,513   Other 56,097   57,106   57,636   Total other borrowings 579,328   534,803   647,043   Subordinated notes 298,536   298,283   298,188   Total FHLB advances, other borrowings and subordinated notes $ 4,029,173   $ 3,984,395   $ 4,116,540   Descriptions of the Company’s FHLB advances, other borrowings, and subordinated notes are included in Note (11) “Federal Home Loan Bank Advances,” Note (12) “Subordinated Notes” and Note (13) “Other Borrowings” of the 2024 Form 10-K. Notes Payable Notes payable balances represent the balances on the Company’s credit agreement with certain unaffiliated banks. At September 30, 2025, the outstanding principal balance under the term loan facility was $ 121.4 million and there was no outstanding balance under the revolving credit facility. Borrowings under notes payable are secured by pledges of and first priority perfected security interests in the Company’s equity interest in its bank subsidiaries and contain several restrictive covenants, including the maintenance of various capital adequacy levels, asset quality and profitability ratios, and certain restrictions on dividends and other indebtedness. At September 30, 2025, the Company was in compliance with all such covenants. 27 Table of Contents Secured Borrowings The balance of secured borrowings primarily represents a third party Canadian transaction (“Canadian Secured Borrowing”). Under the Canadian Secured Borrowing, the Company, through its subsidiary, First Insurance Funding of Canada (“FIFC Canada”), sells an undivided co-ownership interest in all receivables owed to FIFC Canada to an unrelated third party in exchange for cash payments pursuant to a receivables purchase agreement (“Receivables Purchase Agreement”). On August 29, 2024, the Company entered into the Twelfth Amending Agreement to the Receivables Purchase Agreement dated as of December 16, 2014. The amended Receivables Purchase Agreement provides for, among other things, an extension of the maturity date to December 15, 2025 and an increase to the facility limit from C$ 520  million to C$ 650  million. At September 30, 2025, the translated balance of the secured borrowings totaled $ 387.9 million compared to $ 323.2 million at December 31, 2024 and $ 428.6 million at September 30, 2024. The interest rate under the Receivables Purchase Agreement is the Canadian Commercial Paper Rate plus fee rate of 0.825 %. The remaining $ 14.0 million, $ 11.7  million and $ 10.9 million within secured borrowings at September 30, 2025, December 31, 2024 and September 30, 2024, respectively, represent other sold interests in certain loans by the Company that were not considered sales and, as such, related proceeds received are reflected on the Company’s Consolidated Statements of Condition as a secured borrowing owed to the various unrelated third parties. Other Borrowings Other borrowings represent a promissory note (“Promissory Note”) issued by the Company in June 2017. Subsequent amendments to the Promissory Note since issuance increased the principal amount to $ 66.4  million, changed the interest rate to a floating rate equal to 1-month CME Term SOFR plus a spread of 1.40 % and extended the maturity date to March 31, 2028. The Promissory Note contains several restrictive covenants, including the maintenance of various capital adequacy levels, asset quality and profitability ratios, and certain restrictions on dividends and indebtedness. At September 30, 2025, the Company was in compliance with all such covenants. Subordinated Notes At September 30, 2025, the Company had outstanding subordinated notes totaling $ 298.5  million compared to $ 298.3  million and $ 298.2  million at December 31, 2024 and September 30, 2024, respectively. The notes issued in 2019 have a stated interest rate of 4.85 % and mature in June 2029. In the second quarter of 2024, the Company repaid the $ 140.0  million of subordinated notes issued in 2014. The notes had a stated interest rate of 5.00 % and matured in June 2024. (12) Junior Subordinated Debentures The following table provides a summary of the Company’s junior subordinated debentures as of September 30, 2025. The junior subordinated debentures represent the par value of the obligations owed to the Trusts. 28 Table of Contents (Dollars in thousands) Common Securities Trust  Preferred Securities Junior Subordinated Debentures Rate Structure (1) Contractual Rate at 9/30/2025 Issue Date Maturity Date Earliest Redemption Date Wintrust Capital Trust III $ 774   $ 25,000   $ 25,774   S+ 0.26161 + 3.25 7.83   % 04/2003 04/2033 04/2008 Wintrust Statutory Trust IV 619   20,000   20,619   S+ 0.26161 + 2.80 7.06   % 12/2003 12/2033 12/2008 Wintrust Statutory Trust V 1,238   40,000   41,238   S+ 0.26161 + 2.60 6.86   % 05/2004 05/2034 06/2009 Wintrust Capital Trust VII 1,550   50,000   51,550   S+ 0.26161 + 1.95 6.25   % 12/2004 03/2035 03/2010 Wintrust Capital Trust VIII 1,238   25,000   26,238   S+ 0.26161 + 1.45 5.71   % 08/2005 09/2035 09/2010 Wintrust Capital Trust IX 1,547   50,000   51,547   S+ 0.26161 + 1.63 5.93   % 09/2006 09/2036 09/2011 Northview Capital Trust I 186   6,000   6,186   S+ 0.26161 + 3.00 7.56   % 08/2003 11/2033 08/2008 Town Bankshares Capital Trust I 186   6,000   6,186   S+ 0.26161 + 3.00 7.56   % 08/2003 11/2033 08/2008 First Northwest Capital Trust I 155   5,000   5,155   S+ 0.26161 + 3.00 7.26   % 05/2004 05/2034 05/2009 Suburban Illinois Capital Trust II 464   15,000   15,464   S+ 0.26161 + 1.75 6.05   % 12/2006 12/2036 12/2011 Community Financial Shares Statutory Trust II 109   3,500   3,609   S+ 0.26161 + 1.62 5.92   % 06/2007 09/2037 06/2012 Total $ 253,566   6.52   % (1) The interest rates on the variable rate junior subordinated debentures are based on the three-month Chicago Mercantile Exchange (“CME”) Term Secured Overnight Financing Rate (“SOFR”) and reset on a quarterly basis. The junior subordinated debentures totaled $ 253.6 million at September 30, 2025, December 31, 2024 and September 30, 2024. At September 30, 2025, the weighted average contractual interest rate on the junior subordinated debentures was 6.52 %. (13) Segment Information The Company’s operations consist of three primary segments: community banking, specialty finance and wealth management. The three reportable segments are strategic business units that are separately managed as they offer different products and services and have different marketing strategies. In addition, each segment’s customer base has varying characteristics and each segment has a different regulatory environment. While the Company’s management monitors each of the sixteen bank subsidiaries’ operations and profitability separately, these subsidiaries have been aggregated into one reportable operating segment due to the similarities in products and services, customer base, operations, profitability measures, and economic characteristics. For purposes of internal segment profitability, management allocates certain intersegment and parent company balances. Management allocates a portion of revenues to the specialty finance segment related to loans and leases originated by the specialty finance segment and sold or assigned to the community banking segment. Similarly, for purposes of analyzing the contribution from the wealth management segment, management allocates a portion of the net interest income earned by the community banking segment on deposit balances of customers of the wealth management segment to the wealth management segment. See Note (10) “Deposits” in Item 1 of this report for more information on these deposits. Finally, expenses incurred at the Wintrust parent company are allocated to each segment based on each segment’s risk-weighted assets. The segment financial information provided in the following table has been derived from the internal profitability reporting system used by management to monitor and manage the financial performance of the Company. The accounting policies of the segments are substantially similar to those described in Note (1) “Summary of Significant Accounting Policies” in the 2024 Form 10-K. Our Chief Executive Officer is our chief operating decision maker (“CODM”). The CODM uses income before taxes to review segment performance and allocate resources for each reportable segment. Financial information regarding each significant segment expense outlined below is regularly provided (at least monthly) to the CODM. For community banking and specialty finance segments, ‘Interest expense’ is a significant segment expense. Additionally, for each of the three reportable segments, ‘Salaries’, ‘Commissions and incentive compensation’ and ‘Benefits’ are significant segment expenses. 29 Table of Contents The following is a summary of certain operating information for reportable segments: (In thousands) Community Banking Specialty Finance Wealth Management Total Operating Segments Intersegment Eliminations Consolidated Three Months Ended September 30, 2025: Interest income $ 838,871   $ 107,840   $ 5,697   $ 952,408   $ 11,426   $ 963,834   Interest expense 386,326   10,410   88   396,824   —   396,824   Net interest income 452,545   97,430   5,609   555,584   11,426   567,010   Provision for credit losses 20,059   1,709   —   21,768   —   21,768   Non-interest income 82,507   32,221   39,663   154,391   ( 23,564 ) 130,827   Non-interest expense: Salaries 97,900   16,464   9,761   124,125   498   124,623   Commissions and incentive compensation 33,175   10,445   12,624   56,244   —   56,244   Benefits 30,577   5,775   2,449   38,801   —   38,801   Other segment expenses (1) 140,977   23,702   8,317   172,996   ( 12,636 ) 160,360   Total non-interest expense 302,629   56,386   33,151   392,166   ( 12,138 ) 380,028   Income before taxes 212,364   71,556   12,121   296,041   —   296,041   Income tax expense 57,753   18,990   3,044   79,787   —   79,787   Net income $ 154,611   $ 52,566   $ 9,077   $ 216,254   $ —   $ 216,254   Total assets at period end $ 56,437,776   $ 12,187,079   $ 1,004,783   $ 69,629,638   $ —   $ 69,629,638   Three Months Ended September 30, 2024: Interest income $ 790,247   $ 100,952   $ 7,096   $ 898,295   $ 10,309   $ 908,604   Interest expense 393,353   12,504   164   406,021   —   406,021   Net interest income 396,894   88,448   6,932   492,274   10,309   502,583   Provision for credit losses 20,475   1,859   —   22,334   —   22,334   Non-interest income 66,323   29,587   37,431   133,341   ( 20,194 ) 113,147   Non-interest expense: Salaries 93,169   15,155   10,202   118,526   445   118,971   Commissions and incentive compensation 35,427   9,206   12,942   57,575   —   57,575   Benefits 27,448   4,888   2,379   34,715   —   34,715   Other segment expenses (1) 129,134   22,366   8,256   159,756   ( 10,330 ) 149,426   Total non-interest expense 285,178   51,615   33,779   370,572   ( 9,885 ) 360,687   Income before taxes 157,564   64,561   10,584   232,709   —   232,709   Income tax expense 42,351   17,758   2,599   62,708   —   62,708   Net income $ 115,213   $ 46,803   $ 7,985   $ 170,001   $ —   $ 170,001   Total assets at period end $ 51,598,626   $ 11,047,585   $ 1,142,213   $ 63,788,424   $ —   $ 63,788,424   (1) Other segment items include non-interest expense categories such as ‘Software & Equipment’, ‘Data processing’, ‘Advertising and Marketing’, ‘FDIC Insurance’, and ‘Occupancy’. See “Non-Interest Expense” under Management’s Discussion and Analysis of Financial Condition and Results of Operations in Item 2 of this Form 10-Q for further discussion on non-interest expense. 30 Table of Contents (In thousands) Community Banking Specialty Finance Wealth Management Total Operating Segments Intersegment Eliminations Consolidated Nine Months Ended September 30, 2025: Interest income $ 2,408,155   $ 312,275   $ 16,192   $ 2,736,622   $ 35,085   $ 2,771,707   Interest expense 1,099,943   31,228   358   1,131,529   —   1,131,529   Net interest income 1,308,212   281,047   15,834   1,605,093   35,085   1,640,178   Provision for credit losses 62,965   5,000   —   67,965   —   67,965   Non-interest income 231,498   96,784   112,991   441,273   ( 69,723 ) 371,550   Non-interest expense: Salaries 293,388   47,864   28,968   370,220   1,494   371,714   Commissions and incentive compensation 98,637   29,462   36,552   164,651   —   164,651   Benefits 90,058   16,399   7,913   114,370   —   114,370   Other segment expenses (1) 413,177   72,237   27,562   512,976   ( 36,132 ) 476,844   Total non-interest expense 895,260   165,962   100,995   1,162,217   ( 34,638 ) 1,127,579   Income before taxes 581,485   206,869   27,830   816,184   —   816,184   Income tax expense 153,471   55,214   6,679   215,364   —   215,364   Net income $ 428,014   $ 151,655   $ 21,151   $ 600,820   $ —   $ 600,820   Nine Months Ended September 30, 2024: Interest income $ 2,207,658   $ 303,746   $ 23,255   $ 2,534,659   $ 29,437   $ 2,564,096   Interest expense 1,088,247   37,825   637   1,126,709   —   1,126,709   Net interest income 1,119,411   265,921   22,618   1,407,950   29,437   1,437,387   Provision for credit losses 77,192   6,876   —   84,068   —   84,068   Non-interest income 212,578   89,221   131,521   433,320   ( 58,446 ) 374,874   Non-interest expense: Salaries 268,145   45,439   30,076   343,660   1,343   345,003   Commissions and incentive compensation 96,459   26,426   37,842   160,727   —   160,727   Benefits 77,670   13,804   7,771   99,245   —   99,245   Other segment expenses (1) 366,858   67,460   25,244   459,562   ( 30,352 ) 429,210   Total non-interest expense 809,132   153,129   100,933   1,063,194   ( 29,009 ) 1,034,185   Income before taxes 445,665   195,137   53,206   694,008   —   694,008   Income tax expense 119,170   52,720   12,435   184,325   —   184,325   Net income $ 326,495   $ 142,417   $ 40,771   $ 509,683   $ —   $ 509,683   (1) Other segment items include non-interest expense categories such as ‘Software & Equipment’, ‘Data processing’, ‘Advertising and Marketing’, ‘FDIC Insurance’, and ‘Occupancy’. See “Non-Interest Expense” under Management’s Discussion and Analysis of Financial Condition and Results of Operations in Item 2 of this Form 10-Q for further discussion on non-interest expense. (14) Derivative Financial Instruments The Company primarily enters into derivative financial instruments as part of its strategy to manage its exposure to changes in interest rates. Derivative instruments represent contracts between parties that result in one party delivering cash to the other party based on a notional amount and an underlying term (such as a rate, security price or price index or commodity price) as specified in the contract. The amount of cash delivered from one party to the other is determined based on the interaction of the notional amount of the contract with the underlying term. Derivatives are also implicit in certain contracts and commitments. The derivative financial instruments currently used by the Company to manage its exposure to interest rate risk include: (1) interest rate swaps, collars and floors to manage the interest rate risk of certain fixed and variable rate assets and variable rate liabilities; (2) interest rate lock commitments provided to customers to fund certain mortgage loans to be sold into the secondary market; (3) forward commitments for the future delivery of such mortgage loans to protect the Company from adverse changes in interest rates and corresponding changes in the value of mortgage loans held-for-sale; (4) covered call options to economically hedge specific investment securities and receive fee income, effectively enhancing the overall yield on such securities to compensate for net interest margin compression; and (5) options and swaps to economically hedge a portion 31 Table of Contents of the fair value adjustments related to the Company’s mortgage servicing rights portfolio. The Company also enters into derivatives (typically interest rate swaps and commodity forward contracts) with certain qualified borrowers to facilitate the borrowers’ risk management strategies and concurrently enters into mirror-image derivatives with a third party counterparty, effectively making a market in the derivatives for such borrowers. Additionally, the Company enters into foreign currency contracts to manage foreign exchange risk associated with certain foreign currency denominated assets. The Company recognizes derivative financial instruments in the consolidated financial statements at fair value regardless of the purpose or intent for holding the instrument. The Company records derivative assets and derivative liabilities on the Consolidated Statements of Condition within accrued interest receivable and other assets and accrued interest payable and other liabilities, respectively. Changes in the fair value of derivative financial instruments are either recognized in income or in shareholders’ equity as a component of accumulated other comprehensive income or loss depending on whether the derivative financial instrument qualifies for hedge accounting and, if so, whether it qualifies as a fair value hedge or cash flow hedge. Changes in fair values of derivatives accounted for as fair value hedges are recorded in income in the same period and in the same income statement line as changes in the fair values of the hedged items that relate to the hedged risk(s). Changes in fair values of derivative financial instruments accounted for as cash flow hedges are recorded as a component of accumulated other comprehensive income or loss, net of deferred taxes, and reclassified to earnings when the hedged transaction affects earnings. Changes in fair values of derivative financial instruments not designated in a hedging relationship pursuant to ASC 815 are reported in non-interest income during the period of the change. Derivative financial instruments are valued by a third party and are corroborated by comparison with valuations provided by the respective counterparties. Fair values of certain mortgage banking derivatives (interest rate lock commitments and forward commitments to sell mortgage loans) are estimated based on changes in mortgage interest rates from the date of the loan commitment. The fair value of foreign currency derivatives is computed based on changes in foreign currency rates stated in the contract compared to those prevailing at the measurement date. Commodity derivative fair values are computed based on changes in the price per unit stated in the contract compared to those prevailing at the measurement date. The table below presents the fair value of the Company’s derivative financial instruments as of September 30, 2025, December 31, 2024 and September 30, 2024: Derivative Assets Derivative Liabilities (In thousands) September 30, 2025 December 31, 2024 September 30, 2024 September 30, 2025 December 31, 2024 September 30, 2024 Derivatives designated as hedging instruments under ASC 815: Interest rate derivatives designated as Cash Flow Hedges $ 59,667   $ 7,329   $ 53,402   $ 4,950   $ 56,084   $ 14,522   Interest rate derivatives designated as Fair Value Hedges 5,633   10,001   8,069   560   87   351   Total derivatives designated as hedging instruments under ASC 815 $ 65,300   $ 17,330   $ 61,471   $ 5,510   $ 56,171   $ 14,873   Derivatives not designated as hedging instruments under ASC 815: Interest rate derivatives $ 136,018   $ 177,553   $ 185,456   $ 133,279   $ 183,799   $ 180,160   Interest rate lock commitments 7,149   1,950   5,143   —   18   6   Forward commitments to sell mortgage loans 47   1,297   31   2,654   88   1,055   Commodity forward contracts 233   766   1,647   67   583   1,365   Foreign exchange contracts 210   1,131   1,914   195   1,091   1,880   Total derivatives not designated as hedging instruments under ASC 815 $ 143,657   $ 182,697   $ 194,191   $ 136,195   $ 185,579   $ 184,466   Total Derivatives $ 208,957   $ 200,027   $ 255,662   $ 141,705   $ 241,750   $ 199,339   Cash Flow Hedges of Interest Rate Risk The Company’s objectives in using interest rate derivatives are to add stability to net interest income and to manage its exposure to interest rate movements. To accomplish these objectives, the Company uses interest rate swaps, collars and floors as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts to or from a counterparty in exchange for the Company receiving or paying fixed-rate payments over the life of the agreements without the exchange of the underlying notional amount. Interest rate collars designated as cash flow hedges involve the settlement of amounts in which the interest rate specified in the contract exceeds the agreed upon cap strike rate or in which the interest rate specified in the contract is below the agreed upon floor strike rate at the end of each period. 32 Table of Contents Interest rate floors designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty if interest rates fall below the strike rate on the contract in exchange for an upfront premium. As of September 30, 2025, the Company had various interest rate collar, swap and floor derivatives designated as cash flow hedges of variable rate loans. When the relationship between the hedged item and hedging instrument is highly effective at achieving offsetting changes in cash flows attributable to the hedged risk, changes in the fair value of these cash flow hedges are recorded in accumulated other comprehensive income or loss and are subsequently reclassified to interest income as interest payments are made on such variable rate loans. The changes in fair value (net of tax) are separately disclosed in the Consolidated Statements of Comprehensive Income. The table below provides details on these cash flow hedges, summarized by derivative type and maturity, as of September 30, 2025: September 30, 2025 Notional Fair Value (In thousands) Amount Asset (Liability) Floor at 1-month CME term SOFR: Buy 2.500 %; matures September 2028 $ 200,000   $ 896   Interest Rate Collars at 1-month CME term SOFR: Buy 2.750 % floor, sell 4.320 % cap; matures October 2026 500,000   172   Buy 2.000 % floor, sell 3.450 % cap; matures September 2027 1,250,000   ( 4,432 ) Interest Rate Swaps at 1-month CME term SOFR: Fixed 3.748 %; matures December 2025 250,000   ( 144 ) Fixed 3.759 %; matures December 2025 250,000   ( 137 ) Fixed 3.680 %; matures February 2026 250,000   ( 194 ) Fixed 4.176 %; matures March 2026 250,000   328   Fixed 3.915 %; matures March 2026 250,000   58   Fixed 4.450 %; matures July 2026 250,000   1,407   Fixed 3.515 %, matures December 2026 250,000   60   Fixed 3.512 %; matures December 2026 250,000   51   Fixed 3.453 %; matures February 2027 250,000   ( 42 ) Fixed 4.150 %; matures July 2027 250,000   3,329   Fixed 3.748 %; matures March 2028 250,000   2,574   Fixed 3.526 %; matures March 2028 250,000   1,271   Fixed 3.993 %; matures October 2029 350,000   9,228   Fixed 4.245 %; matures November 2029 350,000   12,803   Fixed 3.300 %; matures November 2029 (1) 250,000   183   Fixed 3.816 %; matures November 2030 (1) 250,000   5,787   Fixed 3.551 %; matures November 2030 (1) 250,000   2,716   Fixed 3.950 %; matures February 2031 (2) 250,000   7,469   Fixed 4.250 %; matures February 2031 (2) 250,000   10,924   Fixed 3.378 %; matures October 2031 (3) 200,000   410   Total Cash Flow Hedges $ 7,100,000   $ 54,717   (1) Represents interest rate swaps that have effective starting dates of November 1, 2025. (2) Represents interest rate swaps that have effective starting dates of February 1, 2026. (3) Represents interest rate swaps that have effective starting dates of October 1, 2026 In the first quarter of 2022, the Company terminated interest rate swap derivative contracts designated as cash flow hedges of variable rate deposits with a total notional value of $ 1.0  billion and a five-year term effective July 2022. At the time of termination, the fair value of the derivative contracts totaled an asset of $ 66.5  million, with such adjustments to fair value recorded in accumulated other comprehensive income or loss. In the second quarter of 2022, the Company terminated one additional interest rate swap derivative contract designated as a cash flow hedge of variable rate deposits with a total notional value of $ 500.0  million effective since April 2020. The remaining term of such derivative contract was through April 2024 and, at the time of termination, the fair value of the derivative contract totaled assets of $ 10.7  million, with such adjustments to fair value recorded in accumulated other comprehensive income or loss. 33 Table of Contents For all such terminations, as the hedged forecasted transactions (interest payments on variable rate deposits) are still expected to occur over the remaining term of such terminated derivatives, such adjustments will remain in accumulated other comprehensive income or loss and be reclassified as a reduction to interest expense on a straight-line basis over the original term of the terminated derivative contracts. A rollforward of the amounts in accumulated other comprehensive income or loss related to interest rate derivatives designated as cash flow hedges, including such derivative contracts terminated during the period, follows: Three Months Ended Nine Months Ended (In thousands) September 30, 2025 September 30, 2024 September 30, 2025 September 30, 2024 Unrealized gain (loss) at beginning of period $ 72,529   $ ( 49,396 ) $ ( 15,508 ) $ 43,538   Amount reclassified from accumulated other comprehensive income or loss to interest income or expense on deposits, loans, and other borrowings 5,300   20,378   15,936   60,720   Amount of (loss) gain recognized in other comprehensive income or loss ( 1,020 ) 104,470   76,381   ( 28,806 ) Unrealized gain at end of period $ 76,809   $ 75,452   $ 76,809   $ 75,452   As of September 30, 2025, the Company estimated that during the next 12 months $ 22.8 million will be reclassified from accumulated other comprehensive income or loss as an increase to net interest income. Such estimate consists of $ 13.3 million reclassified as a reduction to interest expense on the terminated cash flow hedges discussed above and $ 9.5 million reclassified as an increase to interest income related to the interest rate collars, floors and swaps noted above that remain outstanding. Fair Value Hedges of Interest Rate Risk Interest rate swaps designated as fair value hedges involve the payment of fixed amounts to a counterparty in exchange for the Company receiving variable payments over the life of the agreements without the exchange of the underlying notional amount. As of September 30, 2025, the Company had 13 interest rate swaps with an aggregate notional amount of $ 119.2 million that were designated as fair value hedges primarily associated with fixed rate commercial and industrial and commercial real estate loans as well as life insurance premium finance receivables. For derivatives designated and that qualify as fair value hedges, the net gain or loss from the entire change in the fair value of the derivative instrument is recognized in the same income statement line item as the earnings effect, including the net gain or loss, of the hedged item (interest income earned on fixed rate loans) when the hedged item affects earnings. The following table presents the carrying amount of the hedged assets/(liabilities) and the cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged assets/(liabilities) that are designated as a fair value hedge accounting relationship as of September 30, 2025: (In thousands) September 30, 2025 Derivatives in Fair Value Hedging Relationships Location in the Statement of Condition Carrying Amount of the Hedged Assets/(Liabilities) Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities) Cumulative Amount of Fair Value Hedging Adjustment Remaining for any Hedged Assets/(Liabilities) for which Hedge Accounting has been Discontinued Interest rate swaps Loans, net of unearned income $ 113,650   $ ( 5,031 ) $ ( 38 ) Available-for-sale debt securities 494   ( 3 ) —   The following table presents the loss or gain recognized related to derivative instruments that are designated as fair value hedges for the respective period: (In thousands) Derivatives in Fair Value Hedging Relationships Location of (Loss)/Gain Recognized in Income on Derivative Three Months Ended Nine Months Ended September 30, 2025 September 30, 2025 Interest rate swaps Interest and fees on loans $ ( 4 ) $ ( 10 ) 34 Table of Contents Non-Designated Hedges The Company does not use derivatives for speculative purposes. Derivatives not designated as accounting hedges are used to manage the Company’s economic exposure to interest rate movements and other identified risks but do not meet the strict hedge accounting requirements of ASC 815. Changes in the fair value of derivatives not designated in hedging relationships are recorded directly in earnings. The Company has interest rate derivatives, including swaps and option products, resulting from a service the Company provides to certain qualified borrowers. The Company’s banking subsidiaries execute certain derivative products (typically interest rate swaps) directly with qualified commercial borrowers to facilitate their respective risk management strategies. For example, these arrangements allow the Company’s commercial borrowers to effectively convert a variable rate loan to a fixed rate. In order to minimize the Company’s exposure on these transactions, the Company simultaneously executes offsetting derivatives with third parties. In most cases, the offsetting derivatives have mirror-image terms, which result in the positions’ changes in fair value substantially offsetting through earnings each period. However, to the extent that the derivatives are not a mirror-image and because of differences in counterparty credit risk, changes in fair value will not completely offset resulting in some earnings impact each period. Changes in the fair value of these derivatives are included in other non-interest income. At September 30, 2025 and December 31, 2024, the Company had interest rate derivative transactions with an aggregate notional amount of approximately $ 14.8 billion and $ 13.3 billion, respectively, (all interest rate swaps and caps with customers and third parties) related to this program. At September 30, 2025 these interest rate derivatives had maturity dates ranging from October 2025 to August 2037. Mortgage Banking Derivatives— These derivatives include interest rate lock commitments provided to customers to fund certain mortgage loans to be sold into the secondary market and forward commitments for the future delivery of such loans. It is the Company’s practice to enter into forward commitments for the future delivery of a portion of its residential mortgage loan production when interest rate lock commitments are entered into in order to economically hedge the effect of future changes in interest rates on its commitments to fund the loans as well as on its portfolio of mortgage loans held-for-sale. The Company’s mortgage banking derivatives have not been designated as being in hedge relationships. At September 30, 2025 and December 31, 2024, the Company had interest rate lock commitments with an aggregate notional amount of approximately $ 379.1 million and $ 120.7 million, and forward commitments to sell mortgage loans with an aggregate notional amount of approximately $ 495.5 million and $ 377.5 million, respectively. The fair values of these derivatives were estimated based on changes in mortgage rates from the dates of the commitments. Changes in the fair value of these mortgage banking derivatives are included in mortgage banking revenue. Commodity Derivatives— The Company has commodity forward contracts resulting from a service the Company provides to certain qualified borrowers. The Company’s banking subsidiaries execute certain derivative products directly with qualified commercial borrowers to facilitate their respective risk management strategies. For example, these arrangements allow the Company’s commercial borrowers to effectively purchase or sell a given commodity at an agreed-upon price on an agreed-upon settlement date. In order to minimize the Company’s exposure on these transactions, the Company simultaneously executes offsetting derivatives with third parties. In most cases, the offsetting derivatives have mirror-image terms, which result in the positions’ changes in fair value substantially offsetting through earnings each period. However, to the extent that the derivatives are not a mirror-image and because of differences in counterparty credit risk, changes in fair value will not completely offset resulting in some earnings impact each period. Changes in the fair value of these derivatives are included in other non-interest income. At September 30, 2025 and December 31, 2024, the Company had commodity derivative transactions with an aggregate notional amount of approximately $ 4.6 million and $ 5.2 million, respectively, (all forward contracts with customers and third parties) related to this program. At September 30, 2025, these commodity derivatives had maturity dates ranging from October 2025 to October 2027. Foreign Currency Derivatives— The Company has foreign currency derivative contracts resulting from a service the Company provides to certain qualified customers. The Company’s banking subsidiaries execute certain derivative products directly with qualified customers to facilitate their respective risk management strategies related to foreign currency fluctuations. For example, these arrangements allow the Company’s customers to effectively exchange the currency of one country for the currency of another country at an agreed-upon price on an agreed-upon settlement date. In order to minimize the Company’s exposure on these transactions, the Company simultaneously executes offsetting derivatives with third parties. In most cases, the offsetting derivatives have mirror-image terms, which result in the positions’ changes in fair value substantially offsetting through earnings each period. However, to the extent that the derivatives are not a mirror-image and because of differences in counterparty credit risk, changes in fair value will not completely offset resulting in some earnings impact each period. Changes in the fair value of these derivatives are included in other non-interest income. As of September 30, 2025 and December 31, 2024, the Company held foreign currency derivatives with an aggregate notional amount of approximately $ 50.5 million and $ 97.1 million, respectively. 35 Table of Contents Other Derivatives— Periodically, the Company will sell options to a bank or dealer for the right to purchase certain securities held within the banks’ investment portfolios (covered call options). These option transactions are designed to increase the total return associated with the investment securities portfolio. These options do not qualify as accounting hedges pursuant to ASC 815 and, accordingly, changes in the fair value of these contracts are recognized as other non-interest income. There were no covered call options outstanding as of September 30, 2025, December 31, 2024 or September 30, 2024. Periodically, the Company will purchase options for the right to purchase securities not currently held within the banks’ investment portfolios or enter into interest rate swaps in which the Company elects to not designate such derivatives as hedging instruments. These option and swap transactions are designed primarily to economically hedge a portion of the fair value adjustments related to the Company’s mortgage servicing rights portfolio. The gain or loss associated with these derivative contracts are included in mortgage banking revenue. The Company held ten interest rate derivatives with an aggregate notional value of $ 362.0 million at September 30, 2025 and ten interest rate derivatives with an aggregate notional value of and $ 295.0 million at December 31, 2024, for such purpose of economically hedging a portion of the fair value adjustment related to its mortgage servicing rights portfolio. Amounts included in the Consolidated Statements of Income related to derivative instruments not designated in hedge relationships were as follows: (In thousands) Three Months Ended Nine Months Ended Derivative Location in income statement September 30, 2025 September 30, 2024 September 30, 2025 September 30, 2024 Interest rate swaps and caps Trading gains (losses), net $ 92   $ ( 245 ) $ 60   $ 248   Mortgage banking derivatives Mortgage banking ( 584 ) ( 1,692 ) 2,733   2,014   Commodity contracts Trading gains (losses), net 89   ( 116 ) 166   282   Foreign exchange contracts Trading gains (losses), net 79   ( 171 ) 152   ( 152 ) Covered call options Fees from covered call options 5,619   988   14,689   7,891   Derivative contract held as economic hedge on MSRs Mortgage banking 265   6,892   7,697   3,543   Credit Risk Derivative instruments have inherent risks, primarily market risk and credit risk. Market risk is associated with changes in the value of an underlying asset. Credit risk relates to the risk that the counterparty will fail to perform according to the terms of the agreement. The Company is exposed to the credit risk of its commercial borrowers and third party financial institutions who are counterparties to interest rate derivatives with the Company. The counterparty credit risk associated with the mirror-image swaps executed with third party financial institutions is monitored and managed as part of the Company’s overall asset-liability management process, except that the counterparty credit risk related to derivatives entered into with certain qualified borrowers is managed through the Company’s standard loan underwriting process for commercial borrowers since these derivatives typically share in the collateral provided by the loan agreements. When deemed necessary, appropriate types and amounts of collateral are obtained to minimize credit exposure. The Company hedges the market risk of derivatives transactions with commercial borrowers by entering into offsetting transactions with large, highly rated financial institutions. These exposures are generally secured by cash under bilateral Credit Support Annexes, which are a component of the International Swaps and Derivatives Association (“ISDA”) Master Agreements executed with counterparties. Aggregate counterparty exposures are monitored against various types of credit limits established to contain risk within parameters. Counterparty credit risk is managed by the Counterparty Credit Risk Management team in accordance with SR 11-10, Interagency Counterparty Credit Risk Management Guidance , which was issued in 2011 in response to the financial crisis of 2008. The guidance addresses counterparty credit risk governance, measurement, management, and systems. Specifically, counterparty risk is managed through the establishment and regular review of exposure limits, formalization of limits in policy and procedure, ongoing review of models, and having a single platform to allow for the timely aggregation of exposures. The Counterparty Credit Risk Management team uses a variety of approaches to monitor counterparty financial performance, including monitoring of credit exposure versus limits, use of early warning reports, and daily and intraday monitoring of financial developments. 36 Table of Contents The Company has agreements with certain of its interest rate derivative counterparties that contain cross-default provisions, which provide that if the Company defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Company could also be declared in default on its derivative obligations. The Company also has agreements with certain of its derivative counterparties that contain a provision allowing the counterparty to terminate the derivative positions if the Company fails to maintain its status as a well or adequately capitalized institution, which would require the Company to settle its obligations under the agreements. If the Company were to breach any of these provisions, at a time when the derivatives subject to such agreements are in a liability position, and the derivatives were to be terminated as a result, the Company would be required to settle its obligations under the agreements at the termination value and would be required to pay any additional amounts due in excess of amounts previously posted as collateral with the respective counterparty. As of September 30, 2025, there were $ 1.6 million of derivatives that were subject to such agreements in a net liability position. The Company records interest rate derivatives subject to master netting agreements at their gross value and does not offset derivative assets and liabilities on the Consolidated Statements of Condition. The table below summarizes the Company’s interest rate derivatives and offsetting positions as of the dates shown. Derivative Assets Derivative Liabilities Fair Value Fair Value (In thousands) September 30, 2025 December 31, 2024 September 30, 2024 September 30, 2025 December 31, 2024 September 30, 2024 Gross Amounts Recognized $ 201,318   $ 194,883   $ 246,927   $ 138,789   $ 239,970   $ 195,033   Gross amounts not offset in the Statements of Condition Offsetting Derivative Positions ( 65,969 ) ( 74,656 ) ( 82,819 ) ( 65,969 ) ( 74,656 ) ( 82,819 ) Collateral Posted ( 59,598 ) ( 78,550 ) ( 59,791 ) ( 1,686 ) —   ( 420 ) Net Credit Exposure $ 75,751   $ 41,677   $ 104,317   $ 71,134   $ 165,314   $ 111,794   (15) Fair Value of Assets and Liabilities The Company measures, monitors and discloses certain of its assets and liabilities on a fair value basis. These financial assets and financial liabilities are measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the observability of the inputs used to determine fair value. These levels are: • Level 1—unadjusted quoted prices in active markets for identical assets or liabilities. • Level 2 — inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability or inputs that are derived principally from or corroborated by observable market data by correlation or other means. • Level 3—significant unobservable inputs that reflect the Company’s own assumptions that market participants would use in pricing the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. A financial instrument’s categorization within the above valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the assets or liabilities. The following is a description of the valuation methodologies used for the Company’s assets and liabilities measured at fair value on a recurring basis. Available-for-sale debt securities, trading account securities and equity securities with readily determinable fair value —Fair values for available-for-sale debt securities, trading account securities and equity securities with readily determinable fair value are typically based on prices obtained from independent pricing vendors. Securities measured with these valuation techniques are generally classified as Level 2 of the fair value hierarchy. Typically, standard inputs such as benchmark yields, reported trades for similar securities, issuer spreads, benchmark securities, bids, offers and reference data including market research publications are used to determine the fair value of these securities. When these inputs are not available, broker/dealer quotes may be obtained by the vendor to determine the fair value of the security. We review the vendor’s pricing methodologies to determine if observable market information is being used, versus unobservable inputs. Fair value measurements using 37 Table of Contents significant inputs that are unobservable in the market due to limited activity or a less liquid market are classified as Level 3 in the fair value hierarchy. The fair value of U.S. Treasury securities and certain equity securities with readily determinable fair value are based on unadjusted quoted prices in active markets for identical securities. As such, these securities are classified as Level 1 in the fair value hierarchy. The Company’s Investment Operations Department is responsible for the valuation of Level 3 available-for-sale debt securities. The methodology and variables used as inputs in pricing Level 3 securities are derived from a combination of observable and unobservable inputs. The unobservable inputs are determined through internal assumptions that may vary from period to period due to external factors, such as market movement and credit rating adjustments. At September 30, 2025, the Company classified $ 129.8 million of municipal securities as Level 3. These municipal securities are bond issuances for various municipal government entities primarily located in the Chicago metropolitan area, southern Wisconsin and west Michigan and are privately placed, non-rated bonds without CUSIP numbers. The Company’s methodology for pricing these securities focuses on three distinct inputs: equivalent rating, yield and other pricing terms. To determine the rating for a given non-rated investment debt security, the Investment Operations Department references a rated, publicly issued bond by the same issuer if available. A reduction is then applied to the rating obtained from the comparable bond, as the Company believes if liquidated, a non-rated bond would be valued less than a similar bond with a verifiable rating. The reduction applied by the Company is one complete rating grade (i.e., a “AA” rating for a comparable bond would be reduced to “A” for the Company’s valuation). For bond issuances without comparable bond proxies, a rating of “BBB” was assigned. In the third quarter of 2025, all of the ratings derived by the Investment Operations Department using the above process were “BBB” or better. The fair value measurement noted above is sensitive to the rating input, as a higher rating typically results in an increased valuation. The remaining pricing inputs used in the bond valuation are observable. Based on the rating determined in the above process, Investment Operations obtains a corresponding current market yield curve available to market participants. Other terms including coupon, maturity date, redemption price, number of coupon payments per year, and accrual method are obtained from the individual bond term sheets. Certain municipal bonds held by the Company at September 30, 2025 are continuously callable. When valuing these bonds, the fair value is capped at par value as the Company assumes a market participant would not pay more than par for a continuously callable bond. Mortgage loans held-for-sale —The fair value of mortgage loans held-for-sale is typically determined by reference to investor price sheets for loan products with similar characteristics. Loans measured with this valuation technique are classified as Level 2 in the fair value hierarchy. At September 30, 2025, the Company classified $ 54.7 million of certain delinquent mortgage loans held-for-sale as Level 3. For such delinquent loans in which investor interest may be limited, the Company estimates fair value by discounting future scheduled cash flows for the specific loan through its life, adjusted for estimated credit losses. The Company uses a discount rate based on prevailing market coupon rates on loans with similar characteristics. The assumed weighted average discount rate used as an input to value these loans at September 30, 2025 was 5.14 %. The higher the rate utilized to discount estimated future cash flows, the lower the fair value measurement. Additionally, the weighted average credit discount used as an input to value the specific loans was 1.29 % with credit loss discount ranging from 0 %- 26 % at September 30, 2025. Loans held-for-investment —The fair value of loans held-for-investment is typically determined by reference to investor price sheets for loan products with similar characteristics. Loans measured with this valuation technique are classified as Level 2 in the fair value hierarchy. The fair value for certain loans in which the Company previously elected the fair value option is estimated by discounting future scheduled cash flows for the specific loan through maturity, adjusted for estimated credit losses and prepayment or life assumptions. These loans primarily consist of early buyout loans guaranteed by U.S. government agencies that are delinquent and, as a result, investor interest may be limited. The Company uses a discount rate based on the actual coupon rate of the underlying loan. At September 30, 2025, the Company classified $ 49.2 million of loans held-for-investment carried at fair value as Level 3. The assumed weighted average discount rate used as an input to value these loans at September 30, 2025 was 5.14 %. The higher the rate utilized to discount estimated future cash flows, the lower the fair value measurement. As noted above, the fair value estimate also includes assumptions of prepayment speeds and average life as well as credit losses. The weighted average prepayments speed used as an input to value current loans was 9.44 % at September 30, 2025. Prepayment speeds are inversely related to the fair value of these loans as an increase in prepayment speeds results in a decreased valuation. For delinquent loans in which performance is not assumed and there is a higher probability of resolution of the loan ending in foreclosure, the weighted average life of such loans was 5.8 years. Average life is inversely related to the fair value of these loans as an increase in estimated life results in a decreased valuation. Additionally, the weighted average credit discount used as an input to value the specific loans was 1.88 % with credit loss discounts ranging from 0 %- 26 % at September 30, 2025. 38 Table of Contents MSRs —Fair value for MSRs is determined utilizing a valuation model which calculates the fair value of each servicing right based on the present value of estimated future cash flows. The Company uses a discount rate commensurate with the risk associated with each servicing right, given current market conditions. At September 30, 2025, the Company classified $ 190.9 million of MSRs as Level 3. The weighted average discount rate used as an input to value the pool of MSRs at September 30, 2025 was 10.43 % with discount rates applied ranging from 5 %- 20 %. The higher the rate utilized to discount estimated future cash flows, the lower the fair value measurement. The fair value of MSRs was also estimated based on other assumptions including prepayment speeds and the cost to service. Prepayment speeds ranged from 0 %- 86 % or a weighted average prepayment speed of 9.44 %. Further, for current and delinquent loans, the Company assumed a weighted average cost of servicing of $ 76 and $ 386 , respectively, per loan. Prepayment speeds and the cost to service are both inversely related to the fair value of MSRs as an increase in prepayment speeds or the cost to service results in a decreased valuation. See Note (9) “Mortgage Servicing Rights (“MSRs”)” in Item 1 of this report for further discussion of MSRs. Derivative instruments —The Company’s derivative instruments include swaps, collars and purchased options such as caps and floors, commitments to fund mortgages for sale into the secondary market (interest rate locks), forward commitments to end investors for the sale of mortgage loans, commodity future contracts and foreign currency contracts. Swaps, collars and purchased options such as caps and floors and commodity future contracts are valued by a third party, using models that primarily use market observable inputs, such as yield curves and commodity prices prevailing at the measurement date, and are classified as Level 2 in the fair value hierarchy. The credit risk associated with derivative financial instruments that are subject to master netting agreements is measured on a net basis by counterparty portfolio. The fair value for mortgage-related derivatives is based on changes in mortgage rates from the date of the commitments. The fair value of foreign currency derivatives is computed based on change in foreign currency rates stated in the contract compared to those prevailing at the measurement date. At September 30, 2025, the Company classified $ 7.1 million of derivative assets related to interest rate locks as Level 3. The fair value of interest rate locks is based on prices obtained for loans with similar characteristics from third parties, adjusted for the pull-through rate, which represents the Company’s best estimate of the likelihood that a committed loan will ultimately fund. The weighted-average pull-through rate at September 30, 2025 was 84.88 % with pull-through rates applied ranging from 6 % to 100 %. Pull-through rates are directly related to the fair value of interest rate locks as an increase in the pull-through rate results in an increased valuation. Nonqualified deferred compensation assets —The underlying assets relating to the nonqualified deferred compensation plan are included in a trust and primarily consist of non-exchange traded institutional funds which are priced based by an independent third party service. These assets are classified as Level 2 in the fair value hierarchy. 39 Table of Contents The following tables present the balances of assets and liabilities measured at fair value on a recurring basis for the periods presented: September 30, 2025 (In thousands) Total Level 1 Level 2 Level 3 Available-for-sale securities U.S. Treasury $ 8,036   $ 8,036   $ —   $ —   U.S. government agencies 46,511   —   46,511   —   Municipal 194,244   —   64,450   129,794   Corporate notes 80,372   —   80,372   —   Mortgage-backed 4,944,961   —   4,944,961   —   Trading account securities —   —   —   —   Equity securities with readily determinable fair value 63,445   55,379   8,066   —   Mortgage loans held-for-sale 333,883   —   279,157   54,726   Loans held-for-investment 129,593   —   80,373   49,220   MSRs 190,938   —   —   190,938   Nonqualified deferred compensation assets 17,902   —   17,902   —   Derivative assets 208,957   —   201,808   7,149   Total $ 6,218,842   $ 63,415   $ 5,723,600   $ 431,827   Derivative liabilities $ 141,705   $ —   $ 141,705   $ —   December 31, 2024 (In thousands) Total Level 1 Level 2 Level 3 Available-for-sale securities U.S. Treasury $ 37,907   $ 37,907   $ —   $ —   U.S. government agencies 44,945   —   44,945   —   Municipal 184,593   —   62,986   121,607   Corporate notes 81,162   —   81,162   —   Mortgage-backed 3,792,875   —   3,792,875   —   Trading account securities 4,072   —   4,072   —   Equity securities with readily determinable fair value 215,412   207,346   8,066   —   Mortgage loans held-for-sale 331,261   —   270,862   60,399   Loans held-for-investment 158,795   —   123,899   34,896   MSRs 203,788   —   —   203,788   Nonqualified deferred compensation assets 16,653   —   16,653   —   Derivative assets 200,027   —   198,077   1,950   Total $ 5,271,490   $ 245,253   $ 4,603,597   $ 422,640   Derivative liabilities $ 241,750   $ —   $ 241,750   $ —   September 30, 2024 (In thousands) Total Level 1 Level 2 Level 3 Available-for-sale securities U.S. Treasury $ 98,323   $ 98,323   $ —   $ —   U.S. government agencies 47,654   —   47,654   —   Municipal 200,212   —   64,962   135,250   Corporate notes 80,117   —   80,117   —   Mortgage-backed 3,485,926   —   3,485,926   —   Trading account securities 3,472   —   3,472   —   Equity securities with readily determinable fair value 125,310   117,244   8,066   —   Mortgage loans held-for-sale 461,067   —   402,004   59,063   Loans held-for-investment 138,038   —   93,263   44,775   MSRs 186,308   —   —   186,308   Nonqualified deferred compensation assets 16,756   —   16,756   —   Derivative assets 255,662   —   250,520   5,142   Total $ 5,098,845   $ 215,567   $ 4,452,740   $ 430,538   Derivative liabilities $ 199,339   $ —   $ 199,339   $ —   40 Table of Contents The aggregate remaining contractual principal balance outstanding as of September 30, 2025, December 31, 2024 and September 30, 2024 for mortgage loans held-for-sale measured at fair value under ASC 825 was $ 339.1 million, $ 335.9 million and $ 462.2 million, respectively, while the aggregate fair value of mortgage loans held-for-sale was $ 333.9 million, $ 331.3 million and $ 461.1 million, for the same respective periods, as shown in the above tables. At September 30, 2025, $ 200,000 of mortgage loans held-for-sale were classified as nonaccrual compared to $ 4.0 million as of December 31, 2024 and $ 2.4 million as of September 30, 2024. Additionally, there were $ 53.8 million of loans past due greater than 90 days and still accruing in the mortgage loans held-for-sale portfolio as of September 30, 2025 compared to $ 59.3 million as of December 31, 2024 and $ 58.4 million as of September 30, 2024. All of the nonaccrual loans and loans past due greater than 90 days and still accruing within the mortgage loans held-for-sale portfolio at September 30, 2025, December 31, 2024, and September 30, 2024 were individual delinquent mortgage loans bought back from GNMA at the unconditional option of the Company as servicer for those loans. The aggregate remaining contractual principal balance outstanding as of September 30, 2025, December 31, 2024 and September 30, 2024 for loans held-for-investment measured at fair value under ASC 825 was $ 126.4 million, $ 157.8 million and $ 138.8 million, respectively, while the aggregate fair value of loans held-for-investment was $ 129.6 million, $ 158.8 million and $ 138.0 million, respectively, as shown in the above tables. The changes in Level 3 assets measured at fair value on a recurring basis during the three and nine months ended September 30, 2025 and 2024 are summarized as follows: Mortgage loans held-for-sale Loans held-for- investment Mortgage servicing rights Derivative assets (In thousands) Municipal Balance at July 1, 2025 $ 116,075   $ 27,168   $ 53,037   $ 193,061   $ 5,548   Total net (losses) gains included in: Net income (1) —   82   ( 663 ) ( 2,123 ) 1,601   Other comprehensive income or loss ( 937 ) —   —   —   —   Purchases 14,696   —   —   —   —   Settlements ( 40 ) ( 7,182 ) ( 11,810 ) —   —   Net transfers into Level 3 —   34,658   8,656   —   —   Balance at September 30, 2025 $ 129,794   $ 54,726   $ 49,220   $ 190,938   $ 7,149   Mortgage loans held-for-sale Loans held-for- investment Mortgage servicing rights Derivative assets (In thousands) Municipal Balance at July 1, 2024 $ 95,792   $ 40,545   $ 45,721   $ 204,610   $ 4,795   Total net gains (losses) included in: Net income (1) —   126   381   ( 18,302 ) 347   Other comprehensive income or loss 968   —   —   —   —   Purchases 38,490   —   —   —   —   Settlements —   ( 8,078 ) ( 7,924 ) —   —   Net transfers into Level 3 —   26,470   6,597   —   —   Balance at September 30, 2024 $ 135,250   $ 59,063   $ 44,775   $ 186,308   $ 5,142   (1) Changes in the balance of mortgage loans held-for-sale, MSRs, and derivative assets related to fair value adjustments are recorded as components of mortgage banking revenue. Changes in the balance of loans held-for-investment related to fair value adjustments are recorded as other non-interest income. 41 Table of Contents Mortgage loans held-for-sale Loans held-for- investment Mortgage servicing rights Derivative Assets (In thousands) Municipal Balance at January 1, 2025 $ 121,607   $ 60,399   $ 34,896   $ 203,788   $ 1,950   Total net (losses) gains included in: Net income (1) —   1,534   173   ( 12,850 ) 5,199   Other comprehensive income or loss ( 8,368 ) —   —   —   —   Purchases 29,978   —   —   —   —   Issuances —   —   —   —   —   Sales —   —   —   —   —   Settlements ( 13,423 ) ( 76,602 ) ( 24,535 ) —   —   Net transfers into Level 3 —   69,395   38,686   —   —   Balance at September 30, 2025 $ 129,794   $ 54,726   $ 49,220   $ 190,938   $ 7,149   Mortgage loans held-for-sale Loans held-for- investment Mortgage servicing rights Derivative Assets (In thousands) Municipal Balance at January 1, 2024 $ 86,237   $ 26,835   $ 60,670   $ 192,456   $ 4,510   Total net (losses) gains included in: Net income (1) —   398   130   ( 6,148 ) 632   Other comprehensive income or loss ( 1,700 ) —   —   —   —   Purchases 56,556   —   —   —   —   Sales —   —   —   —   —   Settlements ( 5,843 ) ( 28,687 ) ( 31,436 ) —   —   Net transfers into Level 3 —   60,517   15,411   —   —   Balance at September 30, 2024 $ 135,250   $ 59,063   $ 44,775   $ 186,308   $ 5,142   (1) Changes in the balance of mortgage loans held-for-sale, MSRs and derivative assets related to fair value adjustments are recorded as components of mortgage banking revenue. Changes in the balance of loans held-for-investment related to fair value adjustments are recorded as other non-interest income. Also, the Company may be required, from time to time, to measure certain other assets at fair value on a non-recurring basis in accordance with GAAP. These adjustments to fair value usually result from impairment charges on individual assets. For assets measured at fair value on a non-recurring basis that were still held in the balance sheet at the end of the period, the following table provides the carrying value of the related individual assets or portfolios at September 30, 2025: September 30, 2025 Three Months Ended September 30, 2025 Fair Value Losses Recognized, net Nine Months Ended September 30, 2025 Fair Value Losses Recognized, net (In thousands) Total Level 1 Level 2 Level 3 Individually assessed loans - foreclosure probable and collateral-dependent $ 124,966   $ —   $ —   $ 124,966   $ 21,509   $ 42,664   Other real estate owned (1) 24,832   —   —   24,832   —   816   Total $ 149,798   $ —   $ —   $ 149,798   $ 21,509   $ 43,480   (1) Net fair value losses recognized on other real estate owned include valuation adjustments and charge-offs during the respective period. Individually assessed loans —In accordance with ASC 326, the allowance for credit losses for loans and other financial assets held at amortized cost should be measured on a collective or pooled basis when such assets exhibit similar risk characteristics. In instances in which a financial asset does not exhibit similar risk characteristics to a pool, the Company is required to measure such allowance for credit losses on an individual asset basis. For the Company’s loan portfolio, nonaccrual loans are considered to not exhibit similar risk characteristics as pools and thus are individually assessed. Credit losses are measured by estimating the fair value of the loan based on the present value of expected cash flows, the market price of the loan, or the fair value of the underlying collateral. Individually assessed loans are considered a fair value measurement where an allowance for credit loss is established based on the fair value of collateral. Appraised values on relevant real estate properties, which may require adjustments to market-based valuation inputs, are generally used on foreclosure probable and collateral-dependent loans within the real estate portfolios. 42 Table of Contents The Company’s Managed Assets Division is primarily responsible for the valuation of Level 3 inputs of individually assessed loans. For more information on individually assessed loans refer to Note (7) “Allowance for Credit Losses” in Item 1 of this report. At September 30, 2025, the Company had $ 125.0 million of individually assessed loans classified as Level 3. All of the $ 125.0  million of individually assessed loans were measured at fair value based on the underlying collateral of the loan as shown in the table above. Other real estate owned —Other real estate owned is comprised of real estate acquired in partial or full satisfaction of loans and is included in other assets. Other real estate owned is recorded at its estimated fair value less estimated selling costs at the date of transfer, with any excess of the related loan balance over the fair value less expected selling costs charged to the allowance for loan losses. Subsequent changes in value are reported as adjustments to the carrying amount and are recorded in other non-interest expense. Gains and losses upon sale, if any, are also charged to other non-interest expense. Fair value is generally based on third party appraisals and internal estimates that are adjusted by a discount representing the estimated cost of sale and is therefore considered a Level 3 valuation. The Company’s Managed Assets Division is primarily responsible for the valuation of Level 3 inputs for other real estate owned. At September 30, 2025, the Company had $ 24.8 million of other real estate owned classified as Level 3. The unobservable input applied to other real estate owned relates to the 10 % reduction to the appraisal value representing the estimated cost of sale of the foreclosed property. A higher discount for the estimated cost of sale results in a decreased carrying value. The valuation techniques and significant unobservable inputs used to measure both recurring and non-recurring Level 3 fair value measurements at September 30, 2025 were as follows: (Dollars in thousands) Fair Value Valuation Methodology Significant Unobservable Input Input / Range of Inputs Weighted Average of Inputs Impact to valuation from an increased or higher input value Measured at fair value on a recurring basis: Municipal securities $ 129,794   Bond pricing Equivalent rating BBB-AA+ N/A Increase Mortgage loans held-for-sale 54,726   Discounted cash flows Discount rate 5.14 % 5.14 % Decrease Credit discount 0 % - 26 % 1.29 % Decrease Loans held-for-investment 49,220   Discounted cash flows Discount rate 5.14 % - 6.00 % 5.14 % Decrease Credit discount 0 % - 26 % 1.88 % Decrease Constant prepayment rate (CPR) - current loans 9.44 % 9.44 % Decrease Average life - delinquent loans (in years) 1.6 years - 11.7 years 5.8 years Decrease MSRs 190,938   Discounted cash flows Discount rate 5 % - 20 % 10.43 % Decrease Constant prepayment rate (CPR) 0 % - 86 % 9.44 % Decrease Cost of servicing $ 70 - $ 200 $ 76   Decrease Cost of servicing - delinquent $ 200 - 1,000 $ 386   Decrease Derivatives 7,149   Discounted cash flows Pull-through rate 6 % - 100 % 84.88   % Increase Measured at fair value on a non-recurring basis: Individually assessed loans - foreclosure probable and collateral-dependent 124,966   Appraisal value Appraisal adjustment - cost of sale 10 % 10.00 % Decrease Other real estate owned 24,832   Appraisal value Appraisal adjustment - cost of sale 10 % 10.00 % Decrease 43 Table of Contents The Company is required under applicable accounting guidance to report the fair value of all financial instruments on the Consolidated Statements of Condition, including those financial instruments carried at cost. The table below presents the carrying amounts and estimated fair values of the Company’s financial instruments as of the dates shown: At September 30, 2025 At December 31, 2024 At September 30, 2024 Carrying Fair Carrying Fair Carrying Fair (In thousands) Value Value Value Value Value Value Financial Assets: Cash and cash equivalents $ 565,469   $ 565,469   $ 458,536   $ 458,536   $ 731,128   $ 731,128   Interest-bearing deposits with banks 3,422,452   3,422,452   4,409,753   4,409,753   3,648,117   3,648,117   Available-for-sale securities 5,274,124   5,274,124   4,141,482   4,141,482   3,912,232   3,912,232   Held-to-maturity securities 3,438,406   2,860,970   3,613,263   2,910,550   3,677,420   3,121,820   Trading account securities —   —   4,072   4,072   3,472   3,472   Equity securities with readily determinable fair value 63,445   63,445   215,412   215,412   125,310   125,310   FHLB and FRB stock, at cost 282,755   282,755   281,407   281,407   266,908   266,908   Brokerage customer receivables —   —   18,102   18,102   16,662   16,662   Mortgage loans held-for-sale, at fair value 333,883   333,883   331,261   331,261   461,067   461,067   Loans held-for-investment, at fair value 129,593   129,593   158,795   158,795   138,038   138,038   Loans held-for-investment, at amortized cost 51,933,889   51,255,561   47,896,242   47,070,249   46,929,409   46,081,849   Nonqualified deferred compensation assets 17,902   17,902   16,653   16,653   16,756   16,756   Derivative assets 208,957   208,957   200,027   200,027   255,662   255,662   Accrued interest receivable and other 587,274   587,274   563,625   563,625   588,594   588,594   Total financial assets $ 66,258,149   $ 65,002,385   $ 62,308,630   $ 60,779,924   $ 60,770,775   $ 59,367,615   Financial Liabilities: Non-maturity deposits $ 46,292,925   $ 46,292,925   $ 43,092,318   $ 43,092,318   $ 41,406,393   $ 41,406,393   Deposits with stated maturities 10,418,456   10,424,097   9,420,031   9,423,976   9,998,573   9,985,778   FHLB advances 3,151,309   3,185,090   3,151,309   3,153,524   3,171,309   3,334,183   Other borrowings 579,328   579,479   534,803   534,406   647,043   646,272   Subordinated notes 298,536   295,974   298,283   286,683   298,188   289,260   Junior subordinated debentures 253,566   253,591   253,566   253,588   253,566   253,662   Derivative liabilities 141,705   141,705   241,750   241,750   199,339   199,339   Accrued interest payable 69,453   69,453   48,364   48,364   75,254   75,254   Total financial liabilities $ 61,205,278   $ 61,242,314   $ 57,040,424   $ 57,034,609   $ 56,049,665   $ 56,190,141   Not all the financial instruments listed in the table above are subject to the disclosure provisions of ASC Topic 820, as certain assets and liabilities result in their carrying value approximating fair value. These include cash and cash equivalents, interest-bearing deposits with banks, brokerage customer receivables, FHLB and FRB stock, accrued interest receivable and accrued interest payable and non-maturity deposits. The following methods and assumptions were used by the Company in estimating fair values of financial instruments that were not previously disclosed. Held-to-maturity securities — Held-to-maturity securities include U.S. government-sponsored agency securities, municipal bonds issued by various municipal government entities primarily located in the Chicago metropolitan area, southern Wisconsin, and west Michigan and mortgage-backed securities. Fair values for held-to-maturity securities are typically based on prices obtained from independent pricing vendors. In accordance with ASC 820, the Company has generally categorized these held-to-maturity securities as a Level 2 fair value measurement. Fair values for certain other held-to-maturity securities are based on the bond pricing methodology discussed previously related to certain available-for-sale securities. In accordance with ASC 820, the Company has categorized these held-to-maturity securities as a Level 3 fair value measurement. Loans held-for-investment, at amortized cost — Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are analyzed by type (commercial, residential real estate, etc.) and category within each type (construction, non-construction, franchise lending etc.). Each category is further segmented by interest rate type (fixed and variable). The fair value of both fixed and variable rate loans is estimated by discounting scheduled cash flows through the estimated maturity using estimated market discount rates that reflect credit and interest rate risks inherent in the loan. In accordance with ASC 820, the Company has categorized loans as a Level 3 fair value measurement. 44 Table of Contents Deposits with stated maturities — The fair value of certificates of deposit is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently in effect for deposits of similar remaining maturities. In accordance with ASC 820, the Company has categorized deposits with stated maturities as a Level 3 fair value measurement. FHLB advances — The fair value of FHLB advances is calculated using a discounted cash flow analysis based on current market rates of similar maturity debt securities to discount cash flows. In accordance with ASC 820, the Company has categorized FHLB advances as a Level 3 fair value measurement. Subordinated notes — The fair value of the subordinated notes is based on a market price obtained from an independent pricing vendor. In accordance with ASC 820, the Company has categorized subordinated notes as a Level 2 fair value measurement. Junior subordinated debentures — The fair value of the junior subordinated debentures is based on the discounted value of contractual cash flows. In accordance with ASC 820, the Company has categorized junior subordinated debentures as a Level 3 fair value measurement. (16) Stock-Based Compensation Plans As of September 30, 2025, approximately 2,184,000 shares were available for future grants, assuming the maximum number of shares are issued for the performance awards outstanding, approved under the Company Stock Incentive Plans (“the Plans”). Descriptions of the Plans are included in Note (18) “Stock Compensation Plans and Other Employee Benefit Plans” of the 2024 Form 10-K. Stock-based compensation expense recognized in the Consolidated Statements of Income was $ 10.1 million in the third quarter of 2025 and $ 9.5 million in the third quarter of 2024, and $ 30.6 million and $ 27.6 million in the nine months ended September 30, 2025 and 2024, respectively. A summary of the Plans’ stock option activity for the nine months ended September 30, 2025 and September 30, 2024 is presented below: Stock Options Common Shares Weighted Average Strike Price Remaining Contractual Term   (1) Intrinsic Value  (2) (in thousands) Outstanding at January 1, 2025 10,825   $ 43.76   Granted —   —   Exercised ( 5,150 ) 42.61   Forfeited or canceled —   —   Outstanding at September 30, 2025 5,675   $ 44.81   3.0 $ 497   Exercisable at September 30, 2025 5,675   $ 44.81   3.0 $ 497   Stock Options Common Shares Weighted Average Strike Price Remaining Contractual Term (1) Intrinsic Value  (2) (in thousands) Outstanding at January 1, 2024 13,100   $ 42.76   Granted —   —   Exercised ( 775 ) 32.26   Forfeited or canceled —   —   Outstanding at September 30, 2024 12,325   $ 43.42   3.7 $ 802   Exercisable at September 30, 2024 12,325   $ 43.42   3.7 $ 802   (1) Represents the remaining weighted average contractual life in years. (2) Aggregate intrinsic value represents the total pre-tax intrinsic value (i.e., the difference between the Company’s stock price on the last trading day of the quarter and the option exercise price, multiplied by the number of shares) that would have been received by the option holders if they had exercised their options on the last day of the quarter. Options with exercise prices above the stock price on the last trading day of the quarter are excluded from the calculation of intrinsic value. The intrinsic value will change based on the fair market value of the Company’s stock. The aggregate intrinsic value of options exercised during the nine months ended September 30, 2025 and September 30, 2024, was approximately $ 467,000 and $ 50,000 , respectively. Cash received from option exercises under the Plans for the nine months ended September 30, 2025 and September 30, 2024 was approximately $ 220,000 and $ 25,000 , respectively. 45 Table of Contents A summary of the Plans’ restricted share activity for the nine months ended September 30, 2025 and September 30, 2024 is presented below: Nine months ended September 30, 2025 Nine months ended September 30, 2024 Restricted Shares Common Shares Weighted Average Grant-Date Fair Value Common Shares Weighted Average Grant-Date Fair Value Outstanding at January 1 880,866   $ 90.95   746,123   $ 79.60   Granted 256,762   133.15   405,506   99.78   Vested and issued ( 218,276 ) 94.41   ( 238,002 ) 70.14   Forfeited or canceled ( 24,156 ) 109.48   ( 17,885 ) 92.77   Outstanding at September 30 895,196   $ 101.71   895,742   $ 90.99   Vested, but deferred, at September 30 101,820   $ 55.31   100,281   $ 54.19   A summary of the Plans’ performance-based stock award activity, based on the target level of the awards, for the nine months ended September 30, 2025 and September 30, 2024 is presented below: Nine months ended September 30, 2025 Nine months ended September 30, 2024 Performance-based Stock Common Shares Weighted Average Grant-Date Fair Value Common Shares Weighted Average Grant-Date Fair Value Outstanding at January 1 454,017   $ 93.57   553,026   $ 79.69   Granted 88,257   134.58   111,398   100.44   Added by performance factor at vesting 75,461   96.51   96,952   58.78   Vested and issued ( 230,957 ) 95.26   ( 296,243 ) 58.76   Forfeited or canceled ( 8,218 ) 107.24   ( 5,304 ) 95.77   Outstanding at September 30 378,560   $ 102.35   459,829   $ 93.61   Vested, but deferred, at September 30 13,283   $ 40.87   21,688   $ 44.21   46 Table of Contents (17) Accumulated Other Comprehensive Income or Loss and Earnings Per Share Accumulated Other Comprehensive Income or Loss The following tables summarize the components of other comprehensive income or loss, including the related income tax effects, and the related amount reclassified to net income for the periods presented: (In thousands) Accumulated Unrealized (Losses) Gains on Securities Accumulated Unrealized Gains (Losses) on Derivative Instruments Accumulated Foreign Currency Translation Adjustments Total Accumulated Other Comprehensive (Loss) Income Balance at July 1, 2025 $ ( 369,968 ) $ 53,920   $ ( 50,185 ) $ ( 366,233 ) Other comprehensive income (loss) during the period, net of tax, before reclassifications 55,886   ( 754 ) ( 7,423 ) 47,709   Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax ( 199 ) 3,922   —   3,723   Amount reclassified from accumulated other comprehensive income or loss related to amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale, net of tax ( 7 ) —   —   ( 7 ) Net other comprehensive income (loss) during the period, net of tax $ 55,680   $ 3,168   $ ( 7,423 ) $ 51,425   Balance at September 30, 2025 $ ( 314,288 ) $ 57,088   $ ( 57,608 ) $ ( 314,808 ) Balance at January 1, 2025 $ ( 429,580 ) $ ( 11,227 ) $ ( 67,528 ) $ ( 508,335 ) Other comprehensive income during the period, net of tax, before reclassifications 115,227   56,523   9,920   181,670   Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax 88   11,792   —   11,880   Amount reclassified from accumulated other comprehensive income or loss related to amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale, net of tax ( 23 ) —   —   ( 23 ) Net other comprehensive income during the period, net of tax $ 115,292   $ 68,315   $ 9,920   $ 193,527   Balance at September 30, 2025 $ ( 314,288 ) $ 57,088   $ ( 57,608 ) $ ( 314,808 ) Balance at July 1, 2024 $ ( 424,172 ) $ ( 36,304 ) $ ( 51,722 ) $ ( 512,198 ) Other comprehensive income during the period, net of tax, before reclassifications 124,478   77,308   3,204   204,990   Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax ( 39 ) 15,080   —   15,041   Amount reclassified from accumulated other comprehensive income or loss related to amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale, net of tax ( 10 ) —   —   ( 10 ) Net other comprehensive income during the period, net of tax $ 124,429   $ 92,388   $ 3,204   $ 220,021   Balance at September 30, 2024 $ ( 299,743 ) $ 56,084   $ ( 48,518 ) $ ( 292,177 ) Balance at January 1, 2024 $ ( 350,697 ) $ 32,049   $ ( 42,583 ) $ ( 361,231 ) Other comprehensive income (loss) during the period, net of tax, before reclassifications 51,916   ( 20,715 ) ( 5,935 ) 25,266   Amount reclassified from accumulated other comprehensive income or loss into net income, net of tax ( 905 ) 44,750   —   43,845   Amount reclassified from accumulated other comprehensive income or loss related to amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale, net of tax ( 57 ) —   —   ( 57 ) Net other comprehensive income (loss) during the period, net of tax $ 50,954   $ 24,035   $ ( 5,935 ) $ 69,054   Balance at September 30, 2024 $ ( 299,743 ) $ 56,084   $ ( 48,518 ) $ ( 292,177 ) 47 Table of Contents (In thousands) Amount Reclassified from Accumulated Other Comprehensive Income or Loss for the Details Regarding the Component of Accumulated Other Comprehensive Income or Loss Three Months Ended Nine Months Ended Impacted Line on the Consolidated Statements of Income September 30, September 30, 2025 2024 2025 2024 Accumulated unrealized (losses) gains on securities Gains included in net income $ 269   $ 45   $ ( 119 ) $ 1,223   Gains on investment securities, net 269   45   ( 119 ) 1,223   Income before taxes Tax effect ( 70 ) ( 6 ) 31   ( 318 ) Income tax expense Net of tax $ 199   $ 39   $ ( 88 ) $ 905   Net income Accumulated unrealized gains on derivative instruments Amount reclassified to interest income on loans $ 8,625   $ 23,704   $ 25,911   $ 72,027   Interest on Loans Amount reclassified to interest expense on deposits ( 3,325 ) ( 3,325 ) ( 9,975 ) ( 11,307 ) Interest on deposits ( 5,300 ) ( 20,379 ) ( 15,936 ) ( 60,720 ) Income before taxes Tax effect 1,378   5,299   4,144   15,970   Income tax expense Net of tax $ ( 3,922 ) $ ( 15,080 ) $ ( 11,792 ) $ ( 44,750 ) Net income Earnings per Share The following table shows the computation of basic and diluted earnings per share for the periods indicated: Three Months Ended Nine Months Ended (Dollars in thousands, except per share data) September 30, 2025 September 30, 2024 September 30, 2025 September 30, 2024 Net income $ 216,254   $ 170,001   $ 600,820   $ 509,683   Less: Preferred stock dividends 13,295   6,991   27,277   20,973   Less: Preferred stock redemption 14,046   —   14,046   —   Net income applicable to common shares (A) $ 188,913   $ 163,010   $ 559,497   $ 488,710   Weighted average common shares outstanding (B) 66,952   64,888   66,871   62,743   Effect of dilutive potential common shares Common stock equivalents 1,028   1,053   945   934   Weighted average common shares and effect of dilutive potential common shares (C) 67,980   65,941   67,816   63,677   Net income per common share: Basic (A/B) $ 2.82   $ 2.51   $ 8.37   $ 7.79   Diluted (A/C) $ 2.78   $ 2.47   $ 8.25   $ 7.67   Potentially dilutive common shares can result from stock options, restricted stock unit awards and shares to be issued under the Employee Stock Purchase Plan and the Directors Deferred Fee and Stock Plan, being treated as if they had been either exercised or issued, computed by application of the treasury stock method. While potentially dilutive common shares are typically included in the computation of diluted earnings per share, potentially dilutive common shares are excluded from this computation in periods in which the effect of inclusion would either reduce the loss per share or increase the income per share. At the January 2025 meeting of the Board of Directors of the Company (the “Board of Directors”), a quarterly cash dividend of $ 0.50 per share ($ 2.00 on an annualized basis) was declared. It was paid on February 20, 2025 to shareholders of record as of February 6, 2025. At the April 2025 meeting of the Board of Directors, a quarterly cash dividend of $ 0.50 per share ($ 2.00 on an annualized basis) was declared. It was paid on May 22, 2025 to shareholders of record as of May 8, 2025. At the July 2025 meeting of Board of Directors, a quarterly cash dividend of $ 0.50 ($ 2.00 on annualized basis) per share was declared. It was paid on August 21, 2025, to shareholders of record as of August 7, 2025. 48 Table of Contents ITEM 2 MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS The following discussion and analysis of the financial condition of Wintrust Financial Corporation and its subsidiaries (collectively, “Wintrust” or the “Company”) as of September 30, 2025 compared with December 31, 2024 and September 30, 2024, and the results of operations for the three and nine month periods ended September 30, 2025 and September 30, 2024, should be read in conjunction with the unaudited consolidated financial statements and notes contained in this report and the risk factors discussed under Item 1A of the Company’s Annual Report on Form 10-K for the year ended December 31, 2024 (“2024 Form 10-K”) and in Part II, Item 1A, of this Form 10-Q. This discussion contains forward-looking statements that involve risks and uncertainties and, as such, future results could differ significantly from management’s current expectations. See the last section of this discussion for further information on forward-looking statements. Introduction Wintrust is a financial holding company that provides traditional community and commercial banking services and offers a full array of wealth management services, primarily to customers in the Chicago metropolitan area, southern Wisconsin, northwest Indiana, and west Michigan, and operates other financing businesses on a national basis and in Canada through several non-bank businesses. Overview Third Quarter Highlights The Company recorded net income of $216.3 million for the third quarter of 2025 compared to $170.0 million in the third quarter of 2024. The results for the third quarter of 2025 demonstrate increased net interest income due to growth in earning assets as well as the Company’s ability to navigate disruptions in the current economic environment during the period due to the Company’s strong deposit franchise and balanced business model. Partially offsetting the increase in net interest income was an increase in non-interest expense. The increase in non-interest expense was a result of additional expenses to support growth. Comprehensive income includes 1) net income as presented on the Company’s Consolidated Statements of Income and 2) other comprehensive income or loss from unrealized gains and losses on the Company’s available-for-sale investment securities portfolios and derivative contracts designated as cash flow hedges as well as foreign currency translation adjustments. Comprehensive income totaled $267.7 million for the third quarter of 2025 compared to $390.0 million for the third quarter of 2024. The Company increased its loan portfolio from $47.1 billion at September 30, 2024 and $48.1 billion at December 31, 2024 to $52.1 billion at September 30, 2025. The increase in the current period compared to the prior periods was a result of growth in several portfolios, including the commercial, commercial real estate, residential real estate loans held for investment portfolios, and insurance premium finance receivable portfolios. For more information regarding changes in the Company’s loan portfolio, see Financial Condition – Interest Earning Assets and Note (6) “Loans” of the Consolidated Financial Statements in Item 1 of this report. The Company recorded net interest income of $567.0 million in the third quarter of 2025 compared to $502.6 million in the third quarter of 2024. This increase in net interest income recorded in the third quarter of 2025 compared to the third quarter of 2024 resulted primarily from growth in earning assets, specifically a $5.5 billion increase in average loans. Net interest margin was 3.48% (3.50% on a fully taxable-equivalent basis, non-GAAP) in the third quarter of 2025 compared to 3.49% (3.51% on a fully taxable-equivalent basis, non-GAAP) in the third quarter of 2024. The net interest margin remained essentially the same as declines in yields of most asset classes were substantially offset by reductions in funding costs (see “Net Interest Income” for further detail). Non-interest income totaled $130.8 million in the third quarter of 2025 compared to $113.1 million in the third quarter of 2024. The increase is primarily due to an increase in mortgage banking revenue of $8.5 million, an increase of service charges on deposit accounts of $3.4 million, and an increase in income from fees from covered call options of $4.6 million in the third quarter of 2025 compared to the third quarter of 2024. This was partially offset by a decrease in foreign currency remeasurement losses of $1.1 million compared to the third quarter of 2024 (see “Non-Interest Income” for further detail). Non-interest expense totaled $380.0 million in the third quarter of 2025, an increase of $19.3 million, or 5%, compared to the third quarter of 2024. This increase compared to the third quarter of 2024 was primarily attributable to increased salaries and 49 Table of Contents employee benefits of $8.4 million and increased software and equipment expenses of $3.5 million (see “Non-Interest Expense” for further detail). Management considers the maintenance of adequate liquidity to be important to the management of risk. Accordingly, during the third quarter of 2025, the Company continued its practice of maintaining appropriate funding capacity to provide the Company with adequate liquidity for its ongoing operations. In this regard, the Company benefited from its strong deposit base, a liquid investment portfolio and its access to funding from a variety of external funding sources, including the Company’s issuance of an additional series of preferred stock during the second quarter of 2025. See “Shareholders’ Equity”, “Deposits” and “Other Funding Sources” for additional information regarding liquidity sources. RESULTS OF OPERATIONS Earnings Summary The Company’s key operating measures and growth rates for the three and nine months ended September 30, 2025, as compared to the same period last year, are shown below: Three Months Ended (Dollars in thousands, except per share data) September 30, 2025 September 30, 2024 Percentage (%) or Basis Point (bp) Change Net income $ 216,254   $ 170,001  27  % Pre-tax income, excluding provision for credit losses (non-GAAP) (1) 317,809   255,043  25  Net income per common share—Diluted 2.78   2.47  13  Net revenue (2) 697,837   615,730  13  Net interest income 567,010   502,583  13  Net interest margin 3.48   % 3.49  % (1) bps Net interest margin - fully taxable-equivalent (non-GAAP) (1) 3.50   3.51  (1) Net overhead ratio (3) 1.45   1.62  (17) Return on average assets 1.26   1.11  15  Return on average common equity 11.58   11.63  (5) Return on average tangible common equity (non-GAAP) (1) 13.74   13.92  (18) Nine months ended (Dollars in thousands, except per share data) September 30, 2025 September 30, 2024 Percentage (%) or Basis Point (bp) Change Net income $ 600,820   $ 509,683  18    % Pre-tax income, excluding provision for credit losses (non-GAAP) (1) 884,149   778,076  14  Net income per common share—Diluted 8.25   7.67  7  Net revenue (2) 2,011,728   1,812,261  11  Net interest income 1,640,178   1,437,387  14  Net interest margin 3.51   % 3.52  % (1) bps Net interest margin - fully taxable-equivalent (non-GAAP) (1) 3.53   3.54  (1) Net overhead ratio (3) 1.53   1.52  1  Return on average assets 1.22   1.17  5  Return on average common equity 11.94   12.52  (58) Return on average tangible common equity (non-GAAP) (1) 14.28   14.69  (41) At end of period Total assets $ 69,629,638   $ 63,788,424  9  % Total loans, excluding loans held-for-sale 52,063,482   47,067,447  11  Total loans, including loans held-for-sale 52,397,365   47,528,514  10  Total deposits 56,711,381   51,404,966  10  Total shareholders’ equity 7,045,757   6,399,714  10  Book value per common share (1) 98.87   90.06  10  Tangible common book value per share (1) 85.39   76.15  12  Market price per common share 132.44   108.53  22  Allowance for loan and unfunded lending-related commitment losses to total loans 0.87   % 0.93  % (6)  bps (1) See following section titled “Supplemental Non-GAAP Financial Measures/Ratios” for additional information on this performance measure/ratio. (2) Net revenue is net interest income plus non-interest income. (3) 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 total average assets. A lower ratio indicates a higher degree of efficiency. 50 Table of Contents Certain returns, yields, performance ratios, and quarterly growth rates are “annualized” throughout this report 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, balance sheet growth rates are most often expressed in terms of an annual rate. As such, 5% growth during a quarter would represent an annualized growth rate of 20%. 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 (“FTE”) basis. 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. A reconciliation of certain non-GAAP performance measures and ratios used by the Company to evaluate and measure the Company’s performance to the most directly comparable GAAP financial measures is shown below: 51 Table of Contents Three Months Ended Nine Months Ended   September 30, June 30, September 30, September 30, September 30, (Dollars and shares in thousands) 2025 2025 2024 2025 2024 Reconciliation of Non-GAAP Net Interest Margin and Efficiency Ratio: (A) Interest Income (GAAP) $ 963,834   $ 920,908  $ 908,604  $ 2,771,707   $ 2,564,096  Taxable-equivalent adjustment:  - Loans 2,154   2,200  2,474  6,560   7,025   - Liquidity management assets 675   680  668  2,045   1,785   - Other earning assets —   —  2  3   10  (B) Interest Income (non-GAAP) $ 966,663   $ 923,788  $ 911,748  $ 2,780,315   $ 2,572,916  (C) Interest Expense (GAAP) 396,824   374,214  406,021  1,131,529   1,126,709  (D) Net Interest Income (GAAP) (A minus C) 567,010   546,694  502,583  1,640,178   1,437,387  (E) Net Interest Income, fully taxable-equivalent (non-GAAP) (B minus C) 569,839   549,574  505,727  1,648,786   1,446,207  Net interest margin (GAAP) 3.48   % 3.52  % 3.49  % 3.51   % 3.52  % Net interest margin, fully taxable-equivalent (non-GAAP) 3.50   3.54  3.51  3.53   3.54  (F) Non-interest income $ 130,827   $ 124,089  $ 113,147  $ 371,550   $ 374,874  (G) Gains on investment securities, net 2,972   650  3,189  6,818   233  (H) Non-interest expense 380,028   381,461  360,687  1,127,579   1,034,185  Efficiency ratio (H/(D+F-G)) 54.69   % 56.92  % 58.88  % 56.24   % 57.07  % Efficiency ratio (non-GAAP) (H/(E+F-G)) 54.47   56.68  58.58  56.00   56.80  Reconciliation of Non-GAAP Tangible Common Equity Ratio: Total shareholders’ equity (GAAP) $ 7,045,757   $ 7,225,696  $ 6,399,714  Less: Non-convertible preferred stock (GAAP) (425,000) (837,500) (412,500) Less: Acquisition-related intangible assets (GAAP) (902,936) (908,639) (924,646) (I) Total tangible common shareholders’ equity (non-GAAP) $ 5,717,821   $ 5,479,557  $ 5,062,568  (J) Total assets (GAAP) $ 69,629,638   $ 68,983,318  $ 63,788,424  Less: Acquisition-related intangible assets (GAAP) (902,936) (908,639) (924,646) (K) Total tangible assets (non-GAAP) $ 68,726,702   $ 68,074,679  $ 62,863,778  Common equity to assets ratio (GAAP) (L/J) 9.5   % 9.3  % 9.4  % Tangible common equity ratio (non-GAAP) (I/K) 8.3   8.0  8.1  Reconciliation of Non-GAAP Tangible Book Value per Common Share: Total shareholders’ equity $ 7,045,757   $ 7,225,696  $ 6,399,714  Less: Preferred stock (425,000) (837,500) (412,500) (L) Total common equity $ 6,620,757   $ 6,388,196  $ 5,987,214  (M) Actual common shares outstanding 66,961   66,938  66,482  Book value per common share (L/M) $ 98.87   $ 95.43  $ 90.06  Tangible book value per common share (non-GAAP) (I/M) 85.39   81.86  76.15  Reconciliation of Non-GAAP Return on Average Tangible Common Equity: (N) Net income applicable to common shares $ 188,913   $ 188,536  $ 163,010  $ 559,497   $ 488,710  Add: Acquisition-related intangible asset amortization 5,196   5,580  4,042  16,394   6,322  Less: Tax effect of acquisition-related intangible asset amortization (1,403) (1,495) (1,087) (4,328) (1,682) After-tax acquisition-related intangible asset amortization $ 3,793   $ 4,085  $ 2,955  $ 12,066   $ 4,640  (O) Tangible net income applicable to common shares (non-GAAP) $ 192,706   $ 192,621  $ 165,965  $ 571,563   $ 493,350  Total average shareholders’ equity $ 6,955,543   $ 6,862,040  $ 5,990,429  $ 6,761,319   $ 5,628,346  Less: Average preferred stock (483,288) (599,313) (412,500) (498,626) (412,500) (P) Total average common shareholders’ equity $ 6,472,255   $ 6,262,727  $ 5,577,929  $ 6,262,693   $ 5,215,846  Less: Average acquisition-related intangible assets (906,032) (910,924) (833,574) (910,972) (730,216) (Q) Total average tangible common shareholders’ equity (non-GAAP) $ 5,566,223   $ 5,351,803  $ 4,744,355  $ 5,351,721   $ 4,485,630  Return on average common equity, annualized (N/P) 11.58   % 12.07  % 11.63  % 11.94   % 12.52  % Return on average tangible common equity, annualized (non-GAAP) (O/Q) 13.74   14.44  13.92  14.28   14.69  Reconciliation of Non-GAAP Pre-Tax, Pre-Provision Income: Income before taxes $ 296,041   $ 267,088  $ 232,709  $ 816,184   $ 694,008  Add: Provision for credit losses 21,768   22,234  22,334  67,965   84,068  Pre-tax income, excluding provision for credit losses (non-GAAP) $ 317,809   $ 289,322  $ 255,043  $ 884,149  $ 778,076  52 Table of Contents Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, September 30, (Dollars and shares in thousands, except per share data) 2025 2025 2024 2025 2024 Reconciliation of Non-GAAP Net Income per Common Share: Net income $ 216,254   $ 195,527  $ 170,001  $ 600,820   $ 509,683  Preferred stock dividends 13,295   6,991  6,991  27,277   20,973  Preferred stock redemption 14,046   —  —  14,046   —  (R) Net income applicable to common shares $ 188,913   $ 188,536  $ 163,010  $ 559,497   $ 488,710  (S) Weighted average common shares outstanding 66,952   66,931  64,888  66,871   62,743  Dilutive potential common shares 1,028   888  1,053  945   934  (T) Average common shares and dilutive common shares 67,980   67,819  65,941  67,816   63,677  Net income per common share - Basic (R/S) $ 2.82   $ 2.82  $ 2.51  $ 8.37   $ 7.79  Net income per common share - Diluted (R/T) $ 2.78   $ 2.78  $ 2.47  $ 8.25   $ 7.67  Preferred stock series F excess one-time extended first dividend $ 4,927   $ —  $ —  $ 4,927   $ —  Preferred stock redemption 14,046   —  —  14,046   —  (U) Total non-recurring preferred stock offering impact (non-GAAP) $ 18,973   $ —  $ —  $ 18,973   $ —  Net income per common share - Basic (non-GAAP) (R+U)/S $ 3.11   $ 2.82  $ 2.51  $ 8.65   $ 7.79  Net income per common share - Diluted (non-GAAP) (R+U)/T $ 3.06   $ 2.78  $ 2.47  $ 8.53   $ 7.67  Critical Accounting Estimates The Company’s Consolidated Financial Statements are prepared in accordance with GAAP in the United States, prevailing practices of the banking industry, and the application of accounting policies of which are described in Note (1) “Summary of Significant Accounting Policies” to the Consolidated Financial Statements in Item 8 of the Company’s 2024 Form 10-K. These policies require numerous estimates and strategic or economic assumptions, which may prove inaccurate or subject to variations. Changes in underlying factors, assumptions or estimates could have a material impact on the Company’s future financial condition and results of operations. At September 30, 2025, management views critical accounting estimates to include the determination of the allowance for credit losses, estimations of fair value, the valuations required for impairment testing of goodwill, the valuation and accounting for derivative instruments and income taxes as the accounting areas that require the most subjective and complex judgments, and as such could be most subject to revision as new information becomes available. These estimates were reviewed with the Audit Committee of the Board of Directors. Allowance for Credit Losses, including the Allowance for Loan Losses, Allowance for Losses on Lending-Related Commitments and Allowance for Held-to-Maturity Debt Securities The allowance for credit losses represents management’s estimate of expected credit losses over the life of a financial asset carried at amortized cost. Determining the amount of the allowance for credit losses is considered a critical accounting estimate because it requires significant judgment and the use of estimates related to the fair value of the underlying collateral and amount and timing of expected future cash flows on individually assessed financial assets, estimated credit losses on pools of loans with similar risk characteristics, and consideration of reasonable and supportable forecasts of macroeconomic conditions, all of which are susceptible to significant change. At September 30, 2025, the loan and held-to-maturity debt securities portfolios represent 80% of the total assets on the Company’s consolidated balance sheet. The Company also maintains an allowance for lending-related commitments, specifically unfunded loan commitments and letters of credit, which relates to certain amounts the Company is committed to lend (not unconditionally cancelable) but for which funds have not yet been disbursed. Key macroeconomic variable data points that are significant inputs into our credit loss models for the commercial and commercial real estate portfolios are the Baa corporate credit spread as well as the Dow Jones Total Stock Market Index specifically for the commercial portfolio and the Commercial Real Estate Price Index (“CREPI”) specifically related to the commercial real estate portfolio. Holding all other inputs constant, the table below shows the impact of changes in these key macroeconomic variable data points on the estimate of allowance for credit losses. Impact to estimated allowance for credit losses from an increased or higher input value Baa Credit Spread Increases Dow Jones Total Stock Market Index Decreases CRE Price Index Decreases 53 Table of Contents Holding all other inputs constant, the following table provides a sensitivity analysis for the commercial and commercial real estate portfolios based on a 20 basis point change in Baa credit spreads from the assumption utilized in the estimate of that portfolio’s allowance for credit losses at September 30, 2025: Baa Credit Spread Narrows Widens Commercial Decreases estimate by 10%-15% Increases estimate by 10%-15% Commercial Real Estate: Construction Decreases estimate by 15%-20% Increases estimate by 15%-20% Non-Construction Decreases estimate by 5%-6% Increases estimate by 5%-6% Holding all other inputs constant, the following table provides a sensitivity analysis for the commercial portfolio based on a 10% change in the Dow Jones Total Stock Market Index from the assumption utilized in the estimate of that portfolio’s allowance for credit losses at September 30, 2025: Dow Jones Total Stock Market Index Increases Decreases Commercial Decreases estimate by 5%-10% Increases estimate by 5%-10% Holding all other inputs constant, the following table provides a sensitivity analysis for the commercial real estate construction and non-construction portfolios based on a 10% change in CREPI from the assumption utilized in the estimate of that portfolio’s allowance for credit losses at September 30, 2025: CRE Price Index Increases Decreases Commercial Real Estate: Construction Decreases estimate by 30%-35% Increases estimate by 145%-150% Non-Construction Decreases estimate by 25%-30% Increases estimate by 40%-45% See Note (7) “Allowance for Credit Losses” to the Consolidated Financial Statements in Item 1 of this report and the section titled “Credit Quality” in Item 2 of this report for a description of the methodology used to determine the allowance for credit losses. For a more detailed discussion on these critical accounting estimates, see “Summary of Critical Accounting Estimates” beginning on page 57 of the 2024 Form 10-K. Net Income Net income for the quarter ended September 30, 2025 totaled $216.3 million, an increase of $46.3 million, or 27%, compared to the quarter ended September 30, 2024. On a per share basis, net income for the third quarter of 2025 totaled $2.78 per diluted common share compared to $2.47 for the third quarter of 2024. The increase in net income for the third quarter of 2025 as compared to the same period in the prior year is primarily attributable to increased net interest income and an increase in non-interest income, partially offset by increased non-interest expense primarily due to increased salary and employee benefits expenses, increased software and equipment expenses and amortization of intangible assets and other acquisition-related expenses that were not applicable in the same period in the prior year. See “Net Interest Income,” “Non-interest Income,” “Non-interest Expense” and “Credit Quality” for further detail. 54 Table of Contents Net Interest Income The primary source of the Company’s revenue is net interest income. Net interest income is the difference between interest income and fees on earning assets, such as loans and securities, and interest expense on the liabilities to fund those assets, including interest-bearing deposits and other borrowings. The amount of net interest income is affected by both changes in the level of interest rates, and the amount and composition of earning assets and interest bearing liabilities. Quarter Ended September 30, 2025 compared to the Quarters Ended June 30, 2025 and September 30, 2024 The following table presents a summary of the Company’s average balances, net interest income and related net interest margins, including a calculation on a fully taxable-equivalent basis, for the third quarter of 2025 as compared to the second quarter of 2025 (sequential quarters) and third quarter of 2024 (linked quarters):   Average Balance for three months ended, Interest for three months ended, Yield/Rate for three months ended, (Dollars in thousands) Sep 30, 2025 Jun 30, 2025 Sep 30, 2024 Sep 30, 2025 Jun 30, 2025 Sep 30, 2024 Sep 30, 2025 Jun 30, 2025 Sep 30, 2024 Interest-bearing deposits with banks, securities purchased under resale agreements and cash equivalents (1) $ 3,276,683   $ 3,308,199  $ 2,413,728  $ 35,067   $ 34,593  $ 32,885  4.25   % 4.19  % 5.42  % Investment securities (2) 9,377,930   8,801,560  8,276,576  87,101   78,733  70,260  3.68   3.59  3.38  FHLB and FRB stock 282,338   282,001  263,707  5,444   5,393  5,451  7.65   7.67  8.22  Liquidity management assets (3) (8) $ 12,936,951   $ 12,391,760  $ 10,954,011  $ 127,612   $ 118,719  $ 108,596  3.91   % 3.84  % 3.94  % Other earning assets (3) (4) (8) —   —  17,542  —   —  282  —   —  6.38  Mortgage loans held-for-sale 295,365   310,534  376,251  4,757   4,872  6,233  6.39   6.29  6.59  Loans, net of unearned income (3) (5) (8) 51,403,566   49,517,635  45,920,586  834,294   800,197  796,637  6.44   6.48  6.90  Total earning assets (8) $ 64,635,882   $ 62,219,929  $ 57,268,390  $ 966,663   $ 923,788  $ 911,748  5.93   % 5.96  % 6.33  % Allowance for loan and investment security losses (410,681) (398,685) (383,736) Cash and due from banks 495,292   478,707  467,333  Other assets 3,582,543   3,540,394  3,563,296  Total assets $ 68,303,036   $ 65,840,345  $ 60,915,283  NOW and interest-bearing demand deposits $ 6,687,292   $ 6,423,050  $ 5,174,673  $ 40,448   $ 37,517  $ 30,971  2.40   % 2.34  % 2.38  % Wealth management deposits 1,604,142   1,552,989  1,362,747  8,415   8,182  10,158  2.08   2.11  2.97  Money market accounts 19,431,021   18,184,754  16,436,111  169,831   155,890  167,382  3.47   3.44  4.05  Savings accounts 6,723,325   6,578,698  6,096,746  38,844   37,637  42,892  2.29   2.29  2.80  Time deposits 10,319,719   9,841,702  9,598,109  98,308   94,244  110,616  3.78   3.84  4.58  Interest-bearing deposits $ 44,765,499   $ 42,581,193  $ 38,668,386  $ 355,846   $ 333,470  $ 362,019  3.15   % 3.14  % 3.72  % Federal Home Loan Bank advances 3,151,310   3,151,310  3,178,973  26,007   25,724  26,254  3.27   3.27  3.29  Other borrowings 614,892   593,657  622,792  6,887   6,957  9,013  4.44   4.70  5.76  Subordinated notes 298,481   298,398  298,135  3,717   3,735  3,712  4.94   5.02  4.95  Junior subordinated debentures 253,566   253,566  253,566  4,367   4,328  5,023  6.83   6.85  7.88  Total interest-bearing liabilities $ 49,083,748   $ 46,878,124  $ 43,021,852  $ 396,824   $ 374,214  $ 406,021  3.21   % 3.20  % 3.75  % Non-interest-bearing deposits 10,791,709   10,643,798  10,271,613  Other liabilities 1,472,036   1,456,383  1,631,389  Equity 6,955,543   6,862,040  5,990,429  Total liabilities and shareholders’ equity $ 68,303,036   $ 65,840,345  $ 60,915,283  Interest rate spread (6) (8) 2.72   % 2.76  % 2.58  % Less: Fully taxable-equivalent adjustment (2,829) (2,880) (3,144) (0.02) (0.02) (0.02) Net free funds/contribution (7) $ 15,552,134   $ 15,341,805  $ 14,246,538  0.78   0.78  0.93  Net interest income/margin (GAAP) (8) $ 567,010   $ 546,694  $ 502,583  3.48   % 3.52  % 3.49  % Fully taxable-equivalent adjustment 2,829   2,880  3,144  0.02   0.02  0.02  Net interest income/margin, fully taxable-equivalent (non-GAAP) (8) $ 569,839   $ 549,574  $ 505,727  3.50   % 3.54  % 3.51  % (1) Includes interest-bearing deposits with 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) Interest income on tax-advantaged loans, trading securities and investment securities reflects a tax-equivalent adjustment based on the marginal federal corporate tax rate in effect as of the applicable period. The total adjustments for the three months ended September 30, 2025, June 30, 2025 and September 30, 2024 were $2.8 million, $2.9 million and $3.1 million, respectively. (4) Other earning assets include brokerage customer receivables and trading account securities. (5) Loans, net of unearned income, include nonaccrual loans. (6) Interest rate spread is the difference between the yield earned on earning assets and the rate paid on interest-bearing liabilities. (7) Net free funds are the difference between total average earning assets and total average interest-bearing liabilities. The estimated contribution to net interest margin from net free funds is calculated using the rate paid for total interest-bearing liabilities. (8) See “Supplemental Non-GAAP Financial Measures/Ratios” for additional information on this performance measure/ratio. 55 Table of Contents For the third quarter of 2025, net interest income totaled $567.0 million, an increase of $20.3 million as compared to the second quarter of 2025, and an increase of $64.4 million as compared to the third quarter of 2024. Net interest margin was 3.48% (3.50% on a FTE basis, non-GAAP) during the third quarter of 2025 compared to 3.52% (3.54% on a FTE basis, non-GAAP) during the second quarter of 2025, and 3.49% (3.51% on a FTE basis, non-GAAP) during the third quarter of 2024. The following table presents a summary of the Company’s net interest income and related net interest margin, including a calculation on a fully taxable-equivalent basis, for the nine months ended September 30, 2025 compared to the nine months ended September 30, 2024:   Average Balance for nine months ended, Interest for nine months ended, Yield/Rate for nine months ended, (Dollars in thousands) September 30, 2025 September 30, 2024 September 30, 2025 September 30, 2024 September 30, 2025 September 30, 2024 Interest-bearing deposits with banks, securities purchased under resale agreements and cash equivalents (1) $ 3,367,419   $ 1,720,387  $ 106,605   $ 69,310  4.23   % 5.38  % Investment securities (2) 8,866,621   8,276,711  238,540   210,834  3.60   3.40  FHLB and FRB stock 282,016   249,375  16,144   14,903  7.65   7.98  Liquidity management assets (3) (8) $ 12,516,056   $ 10,246,473  $ 361,289   $ 295,047  3.86   % 3.85  % Other earning assets (3) (4) (8) 4,332   15,966  92   715  2.84   5.98  Mortgage loans held-for-sale 297,568   338,061  13,875   15,813  6.23   6.25  Loans, net of unearned income (3) (5) (8) 49,597,938   43,963,779  2,405,059   2,261,341  6.48   6.87  Total earning assets (8) $ 62,415,894   $ 54,564,279  $ 2,780,315   $ 2,572,916  5.96   % 6.30  % Allowance for loan and investment security losses (395,041) (368,713) Cash and due from banks 483,543   450,899  Other assets 3,594,449   3,367,882  Total assets $ 66,098,845   $ 58,014,347  NOW and interest-bearing demand deposits $ 6,387,859   $ 5,279,697  $ 111,565   $ 98,586  2.34   % 2.49  % Wealth management deposits 1,577,312   1,467,886  25,203   30,913  2.14   2.81  Money market accounts 18,405,748   15,398,045  472,095   460,466  3.43   3.99  Savings accounts 6,594,716   5,923,205  112,404   123,026  2.28   2.77  Time deposits 9,859,196   8,435,172  288,282   284,263  3.91   4.50  Interest-bearing deposits $ 42,824,831   $ 36,504,005  $ 1,009,549   $ 997,254  3.15   % 3.65  % Federal Home Loan Bank advances 3,151,310   3,002,228  77,172   73,099  3.27   3.25  Other borrowings 597,016   612,627  20,636   26,961  4.62   5.88  Subordinated notes 298,396   381,813  11,166   14,384  5.00   5.03  Junior subordinated debentures 253,566   253,566  13,006   15,011  6.86   7.91  Total interest-bearing liabilities $ 47,125,119   $ 40,754,239  $ 1,131,529   $ 1,126,709  3.21   % 3.69  % Non-interest-bearing deposits 10,722,772   10,041,972  Other liabilities 1,489,635   1,589,790  Equity 6,761,319   5,628,346  Total liabilities and shareholders’ equity $ 66,098,845   $ 58,014,347  Interest rate spread (6) (8) 2.75   % 2.61  % Less: Fully taxable-equivalent adjustment (8,608) (8,820) (0.02) (0.02) Net free funds/contribution (7) $ 15,290,775   $ 13,810,040  0.78   0.93  Net interest income/margin (GAAP) (8) $ 1,640,178   $ 1,437,387  3.51   % 3.52  % Fully taxable-equivalent adjustment 8,608   8,820  0.02   0.02  Net interest income/margin, fully taxable-equivalent (non-GAAP) (8) $ 1,648,786   $ 1,446,207  3.53   % 3.54  % (1) Includes interest-bearing deposits with 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) Interest income on tax-advantaged loans, trading securities and investment securities reflects a taxable-equivalent adjustment based on a marginal federal corporate tax rate in effect as of the applicable period. The total adjustments for the nine months ended September 30, 2025 and September 30, 2024 were $8.6 million and $8.8 million, respectively. (4) Other earning assets include brokerage customer receivables and trading account securities. (5) Loans, net of unearned income, include nonaccrual loans. (6) Interest rate spread is the difference between the yield earned on earning assets and the rate paid on interest-bearing liabilities. (7) Net free funds are the difference between total average earning assets and total average interest-bearing liabilities. The estimated contribution to net interest margin from net free funds is calculated using the rate paid for total interest-bearing liabilities. (8) See “Supplemental Non-GAAP Financial Measures/Ratios” for additional information on this performance ratio. 56 Table of Contents Analysis of Changes in Net Interest Income on a FTE basis (non-GAAP) The following table presents an analysis of the changes in the Company’s net interest income on a FTE basis (non-GAAP) comparing the three month ended September 30, 2025 to each of the three month periods ended June 30, 2025 and September 30, 2024 and nine month periods ended September 30, 2025 and 2024. The reconciliations set forth the changes in the net interest income on a FTE basis (non-GAAP) as a result of changes in volumes, changes in rates and differing number of days in each period: Third Quarter of 2025 Compared to Second Quarter of 2025 Third Quarter of 2025 Compared to Third Quarter of 2024 First Nine Months of 2025 Compared to First Nine Months of 2024 (In thousands) Net interest income, FTE basis (non-GAAP) (1) for comparative period $ 549,574   $ 505,727   $ 1,446,207   Change due to mix and growth of earning assets and interest-bearing liabilities (volume) 20,005   60,831   194,709   Change due to interest rate fluctuations (rate) (5,713) 3,281   13,168   Change due to number of days in each period 5,973   —   (5,298) Less: FTE adjustment (2,829) (2,829) (8,608) Net interest income (GAAP) (1) for the period ended September 30, 2025 $ 567,010   $ 567,010   $ 1,640,178   FTE adjustment 2,829   2,829   8,608   Net interest income, FTE basis (non-GAAP) (1) $ 569,839   $ 569,839   $ 1,648,786   (1) See “Supplemental Non-GAAP Financial Measures/Ratios” for additional information on this performance measure/ratio. Non-interest Income The following table presents non-interest income by category for the periods presented: Three Months Ended $ Change % Change (Dollars in thousands) September 30, 2025 September 30, 2024 Brokerage $ 4,426   $ 6,139  $ (1,713) (28) % Trust and asset management 32,762   31,085  1,677  5  Total wealth management (1) 37,188   37,224  (36) 0  Mortgage banking 24,451   15,974  8,477  53  Service charges on deposit accounts 19,825   16,430  3,395  21  Gains on investment securities, net 2,972   3,189  (217) (7) Fees from covered call options 5,619   988  4,631  NM Trading gains (losses), net 172   (130) 302  NM Operating lease income, net 15,466   15,335  131  1  Other: Interest rate swap fees 3,909   2,914  995  34  BOLI 1,591   1,517  74  5  Administrative services 1,240   1,450  (210) (14) Foreign currency remeasurement (losses) gains (416) 696  (1,112) NM Changes in fair value on EBOs and loans held-for-investment 1,452   518  934  NM Early pay-offs of capital leases 519   532  (13) (2) Miscellaneous 16,839   16,510  329  2  Total Other 25,134   24,137  997  4  Total Non-interest Income $ 130,827   $ 113,147  $ 17,680  16  % (1) Wealth management revenue is comprised of the trust and asset management revenue of Wintrust Private Trust Company, N.A. (“WPTC”) 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 CDEC. NM - Not Meaningful. 57 Table of Contents Nine Months Ended $ Change % Change (Dollars in thousands) September 30, 2025 September 30, 2024 Brokerage $ 13,395   $ 17,283  $ (3,888) (22) % Trust and asset management 94,656   90,169  4,487  5  Total wealth management (1) 108,051   107,452  599  1  Mortgage banking 68,150   72,761  (4,611) (6) Service charges on deposit accounts 58,689   46,787  11,902  25  Gains on investment securities, net 6,818   233  6,585  NM Fees from covered call options 14,689   7,891  6,798  86  Trading gains, net 259   617  (358) (58) Operating lease income, net 45,919   43,383  2,536  6  Other: Interest rate swap fees 9,188   9,134  54  1  BOLI 4,644   4,519  125  3  Administrative services 3,948   3,989  (41) (1) Foreign currency remeasurement gains (losses) 59   (620) 679  NM Changes in fair value on EBOs and loans held-for-investment 2,007   683  1,324  NM Early pay-offs of capital leases 1,687   1,355  332  25  Miscellaneous 47,442   76,690  (29,248) (38) Total Other 68,975   95,750  (26,775) (28) Total Non-interest Income $ 371,550   $ 374,874  $ (3,324) (1) % (1) Wealth management revenue is comprised of the trust and asset management revenue of the WPTC 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 CDEC.   NM - Not Meaningful. Notable contributions to the change in non-interest income are as follows: Mortgage banking revenue increased for the three months ended September 30, 2025 as compared to the same period in 2024 due to higher production revenue and improved valuation adjustments in the MSRs. On a year-to-date basis, mortgage banking revenue decreased for the nine months ended September 30, 2025 as compared to the same period in 2024 as a result of lower production volume and net revenue related to lower MSR activity and valuation adjustments. Mortgage banking revenue includes revenue from activities related to originating, selling and servicing residential real estate loans for the secondary market. A main factor in the mortgage banking revenue recognized by the Company is the volume of mortgage loans originated or purchased for sale and the related production margins. Mortgage loans originated for sale totaled $643.4 million in the third quarter of 2025 as compared to $766.8 million in the third quarter of 2024. On a year-to-date basis, mortgage loans originated for sale totaled $1.8 billion for the nine months ended September 30, 2025 as compared to $2.0 billion for nine months ended September 30, 2024. The slight decrease in linked quarter originations was driven by a slight uptick in rates offset by slightly higher inventory levels. The percentage of origination volume from refinancing activities was 23% and 24% for the three and nine months ended September 30, 2025, as compared to 28% and 22%, for the same periods in 2024, respectively. The Company records MSRs at fair value on a recurring basis. For the three months ended September 30, 2025, the fair value of the MSRs portfolio decreased as a result of an unfavorable fair value adjustment of $2.3 million as well as a reduction in value of $5.6 million due to payoffs, paydowns and repurchases of the existing portfolio partially offset by r etained servicing rights led to capitalization of $5.8 million. For the nine months ended September 30, 2025, the fair value of the MSRs portfolio decreased due to an unfavorable fair value adjustment of $13.8 million as well as a reduction in value of $15.9 million due to payoffs and paydowns and repurchases of the existing portfolio partially offset by retained servicing rights led to capitalization of $16.8 million. See Note (9) “Mortgage Servicing Rights (“MSRs”)” to the Consolidated Financial Statements in Item 1 of this report for a summary of the changes in the carrying value of MSRs. Mortgage banking revenue is also impacted by changes in the fair value of derivative contracts held to economically hedge a portion of the fair value adjustments related to the Company’s MSRs portfolio. The change in fair value of the derivative contracts held as an economic hedge was a favorable $265,000 and $7.7 million for the three and nine months ended September 30, 2025 compared to a favorable $6.9 million and $3.5 million for the three and nine months ended September 30, 2024. 58 Table of Contents Service charges on deposits increased for the three and nine months ended September 30, 2025 as compared to the same periods in 2024 primarily as a result of increased commercial account analysis service fees. Service charges on deposit accounts include fees charged to deposit customers for various services, including account analysis services, and are based on factors such as the size and type of customer, type of product and number of transactions. The fees are based on a standard schedule of fees and, depending on the nature of the service performed, the service is performed at a point in time or over a period of a month. The Company recognized net gains on investment securities for the three and nine months ended September 30, 2025 of $3.0 million and $6.8 million, respectively. The Company recognized net gains on investment securities for the three and nine months ended September 30, 2024 of $3.2 million and $233,000, respectively. The net gains for the three and nine months ended September 30, 2025 were primarily due to unrealized gains on the Company’s equity investment securities with a readily determinable fair value recorded in the first and second quarter of 2025. See Note (5) “Investment Securities” to the Consolidated Financial Statements in Item 1 of this report for more information on net gains and losses on investment securities. Fees from covered call options for the three and nine months ended September 30, 2025 increased $4.6 million and $6.8 million, respectively, when compared to the same periods in the prior year. The increased income was primarily because the Company sold more options than in the comparative periods. The Company has typically written call options with terms of less than three months against certain U.S. Treasury and agency securities held in its portfolio for liquidity and other purposes. Management has effectively entered into these transactions with the goal of economically hedging security positions and enhancing its overall return on its investment portfolio. These option transactions are designed to increase the total return associated with holding certain investment securities and do not qualify as hedges pursuant to accounting guidance. There were no outstanding call option contracts at September 30, 2025 and 2024. Miscellaneous non-interest income includes loan servicing fees, income from other investments, and other fees. This category of income increased $329,000 and decreased $29.2 million for the three and nine months ended September 30, 2025, respectively, compared to the same periods in 2024. For the nine months ended September 30, 2025, miscellaneous income decreased compared to the same period in 2024 primarily due to a $20.0 million gain recognized in the first quarter of 2024 related to the sale of the Company’s Retirement Benefits Advisors (“RBA”) division within its wealth management business as well as a $4.6 million gain recognized in the second quarter of 2024 on the sale of premium finance receivables. 59 Table of Contents The table below presents additional selected information regarding mortgage banking for the respective periods. Three Months Ended   Nine Months Ended (Dollars in thousands) September 30, 2025 September 30, 2024 September 30, 2025 September 30, 2024 Originations: Retail originations $ 505,793   $ 527,408  $ 1,378,020   $ 1,403,306  Veterans First originations 137,600   239,369  407,372   561,270  Total originations for sale (A) $ 643,393   $ 766,777  $ 1,785,392   $ 1,964,576  Originations for investment 351,012   218,984  991,115   663,561  Total originations $ 994,405   $ 985,761  $ 2,776,507   $ 2,628,137  As percentage of originations for sale: Retail originations 79   % 69  % 77   % 71  % Veterans First originations 21   31  23   29  Purchases 77   % 72  % 76   % 78  % Refinances 23   28  24   22  Production Margin: Production revenue (B) (1) $ 15,388   $ 13,113  $ 38,709   $ 41,538  Total originations for sale (A) $ 643,393   $ 766,777  $ 1,785,392   $ 1,964,576  Add: Current period end mandatory interest rate lock commitments to fund originations for sale (2) 307,932   272,072  307,932   272,072  Less: Prior period end mandatory interest rate lock commitments to fund originations for sale (2) 163,664   222,738  103,946   119,624  Total mortgage production volume (C) $ 787,661   $ 816,111  $ 1,989,378   $ 2,117,024  Production margin (B/C) 1.95   % 1.61  % 1.95   % 1.96  % Mortgage Servicing: Loans serviced for others (D) $ 12,524,131   $ 12,253,361  MSRs, at fair value (E) 190,938   186,308  Percentage of MSRs to loans serviced for others (E/D) 1.52   % 1.52  % Servicing income $ 10,112   $ 10,809  $ 31,243   $ 31,893  MSR Fair Value Asset Activity MSR - FV at Beginning of Period $ 193,061   $ 204,610  $ 203,788   $ 192,456  MSR - current period capitalization 5,829   6,357  16,834   19,959  MSR - collection of expected cash flows - paydowns (1,554) (1,598) (4,660) (4,546) MSR - collection of expected cash flows - payoffs and repurchases (4,050) (5,730) (11,196) (12,702) MSR - changes in fair value model assumptions (2,348) (17,331) (13,828) (8,859) MSR Fair Value at end of period $ 190,938   $ 186,308  $ 190,938   $ 186,308  Summary of Mortgage Banking Revenue Operational: Production revenue (1) $ 15,388   $ 13,113  $ 38,709   $ 41,538  MSR - Current period capitalization 5,829   6,357  16,834   19,959  MSR - Collection of expected cash flows - paydowns (1,554) (1,598) (4,660) (4,546) MSR - Collection of expected cash flows - pay offs (4,050) (5,730) (11,196) (12,702) Servicing Income 10,112   10,809  31,243   31,893  Other Revenue (345) (67) (596) (46) Total operational mortgage banking revenue $ 25,380   $ 22,884  $ 70,334   $ 76,096  Fair Value: MSR - changes in fair value model assumptions $ (2,348) $ (17,331) $ (13,828) $ (8,859) Gain on derivative contract held as an economic hedge, net 265   6,892  7,697   3,543  Changes in FV on early buy-out loans guaranteed by US Govt (HFS) 1,154   3,529  3,947   1,981  Total fair value mortgage banking revenue $ (929) $ (6,910) $ (2,184) $ (3,335) Total mortgage banking revenue $ 24,451   $ 15,974  $ 68,150   $ 72,761       (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. 60 Table of Contents Non-interest Expense The following table presents non-interest expense by category for the periods presented: Three Months Ended $ Change % Change (Dollars in thousands) September 30, 2025 September 30, 2024 Salaries and employee benefits: Salaries $ 124,623   $ 118,971  $ 5,652  5  % Commissions and incentive compensation 56,244   57,575  (1,331) (2) Benefits 38,801   34,715  4,086  12  Total salaries and employee benefits 219,668   211,261  8,407  4  Software and equipment 35,027   31,574  3,453  11  Operating lease equipment 10,409   10,518  (109) (1) Occupancy, net 20,809   19,945  864  4  Data processing 11,329   9,984  1,345  13  Advertising and marketing 19,027   18,239  788  4  Professional fees 7,465   9,783  (2,318) (24) Amortization of other acquisition-related intangible assets 5,196   4,042  1,154  29 FDIC insurance 11,418   10,512  906  9  OREO expense, net 262   (938) 1,200  NM Other: Lending expenses, net of deferred originations costs 6,169   4,995  1,174  24  Travel and entertainment 6,029   5,364  665  12  Miscellaneous 27,220   25,408  1,812  7  Total other 39,418   35,767  3,651  10  Total Non-interest Expense $ 380,028   $ 360,687  $ 19,341  5  % NM - Not meaningful. Nine Months Ended $ Change % Change (Dollars in thousands) September 30, 2025 September 30, 2024 Salaries and employee benefits: Salaries $ 371,714   $ 345,003  $ 26,711  8  % Commissions and incentive compensation 164,651   160,727  3,924  2  Benefits 114,370   99,245  15,125  15  Total salaries and employee benefits 650,735   604,975  45,760  8  Software and equipment 106,266   88,536  17,730  20  Operating lease equipment 31,637   32,035  (398) (1) Occupancy, net 61,815   58,616  3,199  5  Data processing 34,713   28,779  5,934  21  Advertising and marketing 50,060   48,715  1,345  3  Professional fees 25,752   29,303  (3,551) (12) Amortization of other acquisition-related intangible assets 16,394   6,322  10,072  NM FDIC insurance 33,315   30,322  2,993  10  FDIC insurance - special assessment —   5,156  (5,156) (100) OREO expense, net 1,410   (805) 2,215  NM Other: Lending expenses, net of deferred originations costs 16,904   15,408  1,496  10  Travel and entertainment 17,325   15,301  2,024  13  Miscellaneous 81,253   71,522  9,731  14  Total other 115,482   102,231  13,251  13  Total Non-interest Expense $ 1,127,579   $ 1,034,185  $ 93,394  9  % NM - Not meaningful. 61 Table of Contents Notable contributions to the change in non-interest expense are as follows: Salaries and employee benefits expense increased for the three and nine months ended September 30, 2025 as compared to the same periods in 2024. The increase was primarily due to annual merit increases. Software and equipment expense increased for the three and nine months ended September 30, 2025 as compared to the same periods in 2024 as a result of higher software license fees as well as higher computer and software depreciation expense as the Company invests in enhancements to the digital customer experience, upgrades to infrastructure and enhancements to information security capabilities. Software and equipment expense includes furniture, equipment and computer software, depreciation, and repairs and maintenance costs. Amortization of other acquisition-related intangible assets increased for the three and nine months ended September 30, 2025 compared to the same periods in 2024 as a result of amortization of the core deposit intangible asset associated with the Macatawa acquisition. FDIC insurance expense increased for the three months and decreased for the nine months ended September 30, 2025 compared to the same period in 2024. For the three months ended September 30, 2025, the increase is primarily due to balance sheet growth as compared to the three months ended September 30, 2024. On a year-to-date basis, the decrease is primarily due to $5.2 million recognized in March 31, 2024 related to the FDIC’s special assessment on uninsured deposits in response to certain bank failures that occurred in 2023. Miscellaneous non-interest expense includes ATM expenses, correspondent bank charges, directors’ fees, telephone, postage, corporate insurance, dues and subscriptions, problem loan expenses and other miscellaneous operational losses and costs. During the three and nine months ended September 30, 2025, the company incurred $471,000 and $6.1 million in acquisition-related expenses related to the Macatawa acquisition. Income Taxes The Company recorded income tax expense of $79.8 million in the third quarter of 2025 compared to $62.7 million in the third quarter of 2024. The effective tax rates were 27.0% in the third quarter of 2025 compared to 26.9% in the third quarter of 2024. During the first nine months of 2025, the Company recorded income tax expense of $215.4 million compared to $184.3 million for the first nine months of 2024. The effective tax rates were 26.4% for the first nine months of 2025 and 26.6% for the first nine months of 2024. Operating Segment Results The Company’s operations consist of three primary segments: community banking, specialty finance and wealth management. Refer to Note (13) “Segment Information” to the Consolidated Financial Statements in Item 1 of this report for further information on the Company’s primary segments. The Company’s profitability is primarily dependent on the net interest income, provision for credit losses, non-interest income and operating expenses of its community banking segment. The community banking segment’s net interest income for the quarter ended September 30, 2025 totaled $452.5 million as compared to $396.9 million for the same period in 2024, an increase of $55.7 million, or 14%. On a year-to-date basis, net interest income for the segment increased by $188.8 million from $1.1 billion for the nine months ended September 30, 2024 to $1.3 billion for the nine months ended September 30, 2025. The increase in the three and nine month periods was primarily attributable to growth in average earning assets coupled with a relatively stable net interest margin. The community banking segment’s non-interest income totaled $82.5 million in the third quarter of 2025, an increase of $16.2 million, or 24%, when compared to the third quarter of 2024 total of $66.3 million. On a year-to-date basis, non-interest income totaled $231.5 million for the nine months ended September 30, 2025, an increase of $18.9 million, or 9%, compared to $212.6 million for the nine months ended September 30, 2024. The increase in the three and nine month periods was primarily the result of an increase in gains recognized on investment securities and increased service charges on deposit accounts. The community banking segment recorded provision for credit losses of $20.1 million and $63.0 million, respectively, for the three and nine months ended September 30, 2025, compared to $20.5 million and $77.2 million, respectively, for the same periods in 2024. The decrease in provision for credit losses for the three and nine month periods was primarily the result of improvements in the forecast for the key macroeconomic variable Baa corporate credit spread coupled with lower net charge-offs . Non-interest expenses increased by $17.5 million and $86.1 million, respectively, for the three and nine months ended September 30, 2025 compared to the same periods in 2024, due to higher salaries, commissions, and incentive compensation along with other segment expenses. The community banking segment’s net income for the quarter ended September 30, 2025 totaled $154.6 million, an increase of $39.4 million as compared to net income in the third quarter of 2024 of $115.2 million. On a year-to-date basis, the net income of the community banking segment for the nine months ended September 30, 2025 totaled $428.0 million as compared to $326.5 million for the nine months ended September 30, 2024. 62 Table of Contents The specialty finance segment’s net interest income totaled $97.4 million for the quarter ended September 30, 2025, compared to $88.4 million for the same period in 2024, an increase of $9.0 million, or 10%. The increase for the three and nine month periods was primarily due to higher average balances in premium finance and leasing, and lower funding costs, offset by lower yields on premium finance. On a year-to-date basis, net interest income for the segment increased $15.1 million, or 6%, compared to the same period in 2024. The specialty finance segment’s provision for credit losses totaled $1.7 million and $5.0 million, respectively, for the three and nine months ended September 30, 2025 compared to $1.9 million and $6.9 million, respectively, for the same periods in 2024. The decrease in provision for credit losses for the three and nine month periods was primarily the result of improvement in credit quality within premium finance receivables and improvement in the forecast for the key macroeconomic variable Baa corporate credit spread, impacting lease financing. The specialty finance segment’s non-interest income increased to $32.2 million from $29.6 million for the three months ended September 30, 2025 and 2024, respectively, and stood at $96.8 million and $89.2 million for the nine months ended September 30, 2025 and 2024, respectively. Non-interest expenses increased by $4.8 million and $12.8 million, respectively, for the three and nine months ended September 30, 2025 compared to the same periods in 2024, primarily because of higher employee benefits, commissions, and incentive compensation as well as other segment expenses. Our property and casualty insurance premium finance operations, life insurance finance operations, lease financing operations and accounts receivable finance operations accounted for 47%, 29%, 22% and 2%, respectively, of the net revenues of our specialty finance business for the nine month period ended September 30, 2025. The net income of the specialty finance segment for the quarter ended September 30, 2025 totaled $52.6 million as compared to $46.8 million for the quarter ended September 30, 2024. On a year-to-date basis, the net income of the specialty finance segment for the nine months ended September 30, 2025 totaled $151.7 million as compared to $142.4 million for the nine months ended September 30, 2024. The wealth management segment reported net interest income of $5.6 million for the third quarter of 2025 compared to $6.9 million in the same quarter of 2024, a decrease of $1.3 million. On a year-to-date basis, net interest income totaled $15.8 million for the first nine months of 2025, as compared to $22.6 million for the first nine months of 2024. Net interest income for this segment is primarily comprised of an allocation of the net interest income earned by the community banking segment on non-interest-bearing and interest-bearing wealth management customer account balances on deposit at the banks. Wealth management customer account balances on deposit at the banks averaged $1.1 billion and $1.5 billion in the first nine months of 2025 and 2024, respectively. This segment recorded non-interest income of $39.7 million for the third quarter of 2025 compared to $37.4 million for the third quarter of 2024. The increase in the three month period was primarily due to higher wealth management revenue driven by an increase in asset valuations. On a year-to-date basis, this segment recorded non-interest income of $113.0 million for the first nine months of 2025 as compared to $131.5 million for the first nine months of 2024. The decrease in the nine month period was primarily due a $20.0 million gain recognized in the first quarter of 2024 related to the sale of the Company’s RBA division within its wealth management business. On a quarter-to-date and year-to-date basis, non-interest expense remained relatively stable for the three and nine month periods ended September 30, 2025 compared to the same periods in 2024. Distribution of wealth management services through each bank continues to be a focus of the Company. The Company is committed to growing the wealth management segment in order to better service its customers and create a more diversified revenue stream. The wealth management segment’s net income totaled $9.1 million for the third quarter of 2025 compared to $8.0 million for the third quarter of 2024. On a year-to-date basis, the wealth management segment’s net income totaled $21.2 million and $40.8 million for the nine month period ended September 30, 2025, and 2024, respectively. Financial Condition Total assets were $69.6 billion at September 30, 2025, representing an increase of $5.8 billion, or 9%, when compared to September 30, 2024 and an increase of approximately $646.3 million, or 4% on an annualized basis, when compared to June 30, 2025. Total funding, which includes deposits, all notes and advances, including secured borrowings and the junior subordinated debentures, was $61.0 billion at September 30, 2025, $60.1 billion at June 30, 2025, and $55.8 billion at September 30, 2024. See Notes (5), (6), (10), (11) and (12) of the Consolidated Financial Statements presented under Item 1 of this report for additional period-end detail on the Company’s interest-earning assets and funding liabilities. 63 Table of Contents Interest-Earning Assets The following table sets forth, by category, the composition of average earning asset balances and the relative percentage of total average earning assets for the periods presented: Three Months Ended September 30, 2025 June 30, 2025 September 30, 2024 (Dollars in thousands) Balance Percent Balance Percent Balance Percent Mortgage loans held-for-sale $ 295,365   0   % $ 310,534  0  % $ 376,251  1  % Loans, net of unearned income Commercial $ 16,239,631   25   % $ 15,909,323  26  % $ 14,544,139  25  % Commercial real estate 13,415,933   21   13,095,845  21  12,502,355  22  Home equity 475,046   1   459,033  1  402,868  1  Residential real estate 3,974,900   6   3,700,917  6  3,171,131  6  Premium finance receivables—property & casualty 8,524,414   13   7,762,161  12  7,218,294  13  Premium finance receivables—life insurance 8,638,561   13   8,455,443  14  7,997,721  14  Other loans 135,081   1   134,913  0  84,078  0  Total average loans (1) $ 51,403,566   80   % $ 49,517,635  80  % $ 45,920,586  81  % Liquidity management assets (2) 12,936,951   20   12,391,760  20  10,954,011  18  Other earning assets (3) —   0   —  0  17,542  0  Total average earning assets $ 64,635,882   100   % $ 62,219,929  100  % $ 57,268,390  100  % Total average assets $ 68,303,036   $ 65,840,345  $ 60,915,283  Total average earning assets to total average assets 95   % 95  % 94  % (1) Total average loans includes nonaccrual loans. (2) Liquidity management assets include investment securities, other securities, interest earning deposits with banks, federal funds sold and securities purchased under resale agreements. (3) Other earning assets include brokerage customer receivables and trading account securities. Mortgage loans held-for-sale. Mortgage loans held-for-sale represents such loans awaiting subsequent sale in the secondary market with such sales eliminating the interest-rate risk associated with these loans, as they are predominantly long-term fixed rate loans, and provide a source of non-interest revenue. The decrease in the average balance for the third quarter of 2025 as compared to the sequential period and prior year periods is primarily due to lower mortgage originations for sale. Loans, net of unearned income. Growth realized in the combined commercial and commercial real estate loan categories for the third quarter of 2025 as compared to the sequential and prior year periods is primarily attributable to increased business development efforts. The aggregate balances of these loan categories comprised 58% in the third quarter of 2025, 59% in the second quarter of 2025 and 59% of the average loan portfolio in the third quarter of 2024. Residential real estate loans averaged $4.0 billion in the third quarter of 2025, and increased $803.8 million, or 25%, from the average balance of $3.2 billion in the same period of 2024. Additionally, compared to the quarter ended June 30, 2025, the average balance increased $274.0 million, or 29% on an annualized basis. Growth is due to the Company continuing to originate non-agency mortgages that are held-for-investment. The increase in the premium finance receivables during the third quarter of 2025 compared to the third quarter of 2024 was the result of effective marketing and customer servicing. Approximately $5.5 billion of premium finance receivables were originated in the third quarter of 2025 compared to $4.8 billion during the same period of 2024. Premium finance receivables consist of a property and casualty portfolio and a life portfolio comprising approximately 50% and 50%, respectively, of the average total balance of premium finance receivables for the third quarter of 2025, and 47% and 53%, respectively, for the third quarter of 2024. Other loans represent a wide variety of personal and consumer loans to individuals. Consumer loans generally have shorter terms and higher interest rates than mortgage loans but generally involve more credit risk due to the type and nature of the collateral. 64 Table of Contents Liquidity management assets. Funds that are not utilized for loan originations are used to purchase investment securities and short term money market investments, to sell as federal funds and to maintain in interest bearing deposits with banks. The balances of these assets can fluctuate based on management’s ongoing effort to manage liquidity and for asset liability management purposes. The Company will continue to prudently evaluate and utilize liquidity sources as needed, including the management of availability with the FHLB and FRB and utilization of the revolving credit facility with unaffiliated banks. The following table sets forth, by category, the composition of average earning asset balances and the relative percentage of total average earning assets for the periods presented: Nine Months Ended September 30, 2025 September 30, 2024 (Dollars in thousands) Balance Percent Balance Percent Mortgage loans held-for-sale $ 297,568   0   % $ 338,061  1  % Loans: Commercial $ 15,840,773   25   % $ 13,728,791  25  % Commercial real estate 13,149,369   21   11,942,029  22  Home equity 461,153   1   365,150  1  Residential real estate 3,740,920   6   2,932,839  5  Premium finance receivables—property & casualty 7,831,182   13   7,017,145  13  Premium finance receivables—life insurance 8,448,993   14   7,896,080  14  Other loans 125,548   0   81,745  0  Total average loans (1) $ 49,597,938   80   % $ 43,963,779  80  % Liquidity management assets (2) 12,516,056   20   10,246,473  19  Other earning assets (3) 4,332   0   15,966  0  Total average earning assets $ 62,415,894   100   % $ 54,564,279  100  % Total average assets $ 66,098,845   $ 58,014,347  Total average earning assets to total average assets 94   % 94  % (1) Total average loans includes nonaccrual loans. (2) Liquidity management assets include investment securities, other securities, interest earning deposits with banks, federal funds sold and securities purchased under resale agreements. (3) Other earning assets include brokerage customer receivables and trading account securities. 65 Table of Contents Maturities and Sensitivities of Loans to Changes in Interest Rates The following table classifies the loan portfolio at September 30, 2025 by date at which the loans reprice or mature, and the type of rate exposure: As of September 30, 2025 One year or less From one to five years From five to fifteen years After fifteen years (In thousands) Total Commercial Fixed rate $ 465,635   $ 3,851,843   $ 2,154,642   $ 17,113   $ 6,489,233   Variable rate 10,054,366   743   —   —   10,055,109   Total commercial $ 10,520,001   $ 3,852,586   $ 2,154,642   $ 17,113   $ 16,544,342   Commercial real estate Fixed rate $ 771,993   $ 2,629,379   $ 358,703   $ 68,729   $ 3,828,804   Variable rate 9,779,638   10,700   65   —   9,790,403   Total commercial real estate $ 10,551,631   $ 2,640,079   $ 358,768   $ 68,729   $ 13,619,207   Home equity Fixed rate $ 9,470   $ 464   $ —   $ 13   $ 9,947   Variable rate 474,255   —   —   —   474,255   Total home equity $ 483,725   $ 464   $ —   $ 13   $ 484,202   Residential real estate Fixed rate $ 17,018   $ 4,563   $ 70,142   $ 1,040,869   $ 1,132,592   Variable rate 117,542   736,051   2,157,685   —   3,011,278   Total residential real estate $ 134,560   $ 740,614   $ 2,227,827   $ 1,040,869   $ 4,143,870   Premium finance receivables - property & casualty Fixed rate $ 8,275,798   $ 90,494   $ —   $ —   $ 8,366,292   Variable rate —   —   —   —   —   Total premium finance receivables - property & casualty $ 8,275,798   $ 90,494   $ —   $ —   $ 8,366,292   Premium finance receivables - life insurance Fixed rate $ 255,894   $ 140,954   $ 4,000   $ —   $ 400,848   Variable rate 8,357,705   —   —   —   8,357,705   Total premium finance receivables - life insurance $ 8,613,599   $ 140,954   $ 4,000   $ —   $ 8,758,553   Consumer and other Fixed rate $ 65,657   $ 8,660   $ 1,045   $ 853   $ 76,215   Variable rate 70,801   —   —   —   70,801   Total consumer and other $ 136,458   $ 8,660   $ 1,045   $ 853   $ 147,016   Total per category Fixed rate $ 9,861,465   $ 6,726,357   $ 2,588,532   $ 1,127,577   $ 20,303,931   Variable rate 28,854,307   747,494   2,157,750   —   31,759,551   Total loans, net of unearned income $ 38,715,772   $ 7,473,851   $ 4,746,282   $ 1,127,577   $ 52,063,482   Less: Existing cash flow hedging derivatives (1) (5,650,000) Total loans repricing or maturing in one year or less, adjusted for cash flow hedging activity $ 33,065,772   Variable Rate Loan Pricing by Index: SOFR tenors (2) $ 20,295,819   12- month CMT (3) 7,284,381   Prime 3,083,193   Fed Funds 768,000   Other U.S. Treasury tenors 191,629   Other 136,529   Total variable rate $ 31,759,551   (1) Excludes cash flow hedges with future effective starting dates. (2) SOFR - Secured Overnight Financing Rate. (3) CMT - Constant Maturity Treasury Rate. 66 Table of Contents CREDIT QUALITY Commercial and Commercial Real Estate Loan Portfolios Our commercial and commercial real estate loan portfolios are comprised primarily of lines of credit for working capital purposes and commercial real estate loans. The table below sets forth information regarding the types and amounts of our loans within these portfolios as of September 30, 2025 and 2024: As of September 30, 2025 As of September 30, 2024 Allowance Allowance % of For Credit % of For Credit Total Losses Total Losses (Dollars in thousands) Balance Balance Allocation Balance Balance Allocation Commercial $ 16,544,342   54.8   % $ 189,476   $ 15,247,693  54.4  % $ 171,598  Commercial Real Estate: Construction and development $ 2,658,153   8.8   % $ 78,765   $ 2,403,690  8.6  % $ 97,949  Non-construction 10,961,054   36.4   % 151,712   10,389,727  37.0  133,195  Total commercial real estate $ 13,619,207   45.2   % $ 230,477   $ 12,793,417  45.6  % $ 231,144  Total commercial and commercial real estate $ 30,163,549   100.0   % $ 419,953   $ 28,041,110  100.0  % $ 402,742  Commercial real estate - primary collateral location by state: Illinois $ 7,096,808   52.1   % $ 7,154,012  55.9  % Wisconsin 893,812   6.6   868,844  6.8  Michigan 875,395   6.4   854,189  6.7  Total primary markets $ 8,866,015   65.1   % $ 8,877,045  69.4  % Florida 486,728   3.6   423,517  3.3  Indiana 464,808   3.4   445,417  3.5  Georgia 333,260   2.5   228,613  1.8  Texas 319,292   2.3   281,057  2.2  California 291,088   2.1   259,341  2.0  Colorado 288,412   2.1   251,247  2.0  Tennessee 276,393   2.0   289,989  2.3  Arizona 255,994   1.9   205,835  1.6  Other 2,037,217   15.0   1,531,356  11.9  Total commercial real estate $ 13,619,207   100.0   % $ 12,793,417  100.0  % We make commercial loans for many purposes, including working capital lines, which are generally renewable annually and supported by business assets, personal guarantees and additional collateral. Such loans may vary in size based on customer need. As a result of growth and the macroeconomic uncertainty qualitative overlay in the Company’s commercial loan portfolio, our allowance for credit losses in our commercial loan portfolio increased to $189.5 million as of September 30, 2025 compared to $171.6 million as of September 30, 2024. Our commercial real estate loans are generally secured by a first mortgage lien and assignment of rents on the property. Since most of our bank branches are located in the Chicago metropolitan area, southern Wisconsin and west Michigan, 65.1% of our commercial real estate loan portfolio is located in this region as of September 30, 2025. We have been able to effectively manage our total non-performing commercial real estate loans, aided by our credit management process. As of September 30, 2025, our allowance for credit losses related to this portfolio was $230.5 million compared to $231.1 million as of September 30, 2024 . The decrease in the allowance for credit losses is primarily a result of improvement in the macroeconomic scenario related to Baa credit spread, offset by growth in the portfolio. The table below sets forth the commercial real estate loans by property type and owner vs. non-owner occupied. 67 Table of Contents (In thousands) September 30, 2025 September 30, 2024 Commercial Real Estate: Owner Occupied Non-Owner Occupied Total % of Total Average Size of Loan Owner Occupied Non-Owner Occupied Total % of Total Average Size of Loan Residential construction $ 3,201  $ 57,722  $ 60,923  1  % $ 655  $ 1,508  $ 71,580  $ 73,088  1  % $ 620  Commercial construction 198,522  2,075,023  2,273,545  17  5,766  180,912  1,803,328  1,984,240  15  4,450  Land 6,312  317,373  323,685  2  1,850  6,411  339,951  346,362  3  1,786  Office 277,351  1,300,857  1,578,208  12  1,468  286,821  1,388,465  1,675,286  13  1,508  Industrial 955,660  1,956,887  2,912,547  21  1,938  974,064  1,553,868  2,527,932  20  1,719  Retail 349,754  1,129,107  1,478,861  11  1,275  355,867  1,048,719  1,404,586  11  1,176  Multi-family 94,211  3,212,386  3,306,597  24  1,447  103,166  3,090,173  3,193,339  25  1,336  Mixed use and other 595,637  1,089,204  1,684,841  12  1,219  548,315  1,040,269  1,588,584  12  1,151  Total commercial real estate $ 2,480,648   $ 11,138,559   $ 13,619,207   100   % $ 1,688   $ 2,457,064  $ 10,336,353  $ 12,793,417  100  % $ 1,541  The Company also participates in mortgage warehouse lending, which is included above within commercial, industrial and other, by providing interim funding to unaffiliated mortgage bankers to finance residential mortgages originated by such bankers for sale into the secondary market. The Company’s loans to the mortgage bankers are secured by the business assets of the mortgage companies as well as the specific mortgage loans funded by the Company, after they have been pre-approved for purchase by third party end lenders. The Company may also provide interim financing for packages of mortgage loans on a bulk basis in circumstances where the mortgage bankers desire to competitively bid on a number of mortgages for sale as a package in the secondary market. Past Due Loans and Non-Performing Assets Our ability to manage credit risk depends in large part on our ability to properly identify and manage problem loans. To do so, the Company operates a credit risk rating system under which our credit management personnel assigns a credit risk rating to each loan at the time of origination and review loans on a regular basis to determine each loan’s credit risk rating on a scale of 1 through 10 with higher scores indicating higher risk. Description of the Company’s credit risk rating structure used is included in Item 7 - Management’s Discussion and Analysis of Financial Condition and Results of Operations of the 2024 Form 10-K. If based on current information and events, it is probable that the Company will be unable to collect all amounts due to it according to the contractual terms of the loan agreement, a loan is individually assessed for measuring the allowance for credit losses and, if necessary, a reserve is established. In determining the appropriate reserve for collateral-dependent loans, the Company considers the results of appraisals for the associated collateral. Loan Portfolio Aging As of September 30, 2025, excluding early buy-out loans guaranteed by U.S. government agencies, $93.0 million, or 0.2% of all loans, were 60 to 89 days (or two payments) past due and $194.4 million, or 0.4% of all loans, were 30 to 59 days (or one payment) past due. As of June 30, 2025, excluding early buy-out loans guaranteed by U.S. government agencies, $92.1 million, or 0.2% of all loans, were 60 to 89 days (or two payments) past due and $163.3 million, or 0.3% of all loans, were 30 to 59 days (or one payment) past due. Many of the commercial and commercial real estate loans shown as 60 to 89 days and 30 to 59 days past due are included on the Company’s internal problem loan reporting system. Loans on this system are closely monitored by management on a monthly basis. The Company's home equity and residential loan portfolios continue to exhibit low delinquency ratios. Home equity loans at September 30, 2025 that were current with regard to the contractual terms of the loan agreement represent 99.2% of the total home equity portfolio. Residential real estate loans, excluding early buy-out loans guaranteed by U.S. government agencies, at September 30, 2025 that were current with regards to the contractual terms of the loan agreements comprise 99.1% of total residential real estate loans outstanding. For more information regarding delinquent loans as of September 30, 2025, see Note (7) “Allowance for Credit Losses” in Item 1 of this report. 68 Table of Contents Non-performing Assets (1) The following table sets forth the Company's non-performing assets performing under the contractual terms of the loan agreement as of the dates shown. (Dollars in thousands) September 30, 2025 June 30, 2025 September 30, 2024 Loans past due greater than 90 days and still accruing: Commercial $ —   $ —  $ 20  Commercial real estate —   —  225  Home equity —   —  —  Residential real estate —   —  —  Premium finance receivables—property and casualty 13,006   14,350  18,235  Premium finance receivables—life insurance —   327  —  Consumer and other 60   184  148  Total loans past due greater than 90 days and still accruing 13,066   14,861  18,628  Nonaccrual loans: Commercial 66,577   80,877  63,826  Commercial real estate 28,202   32,828  42,071  Home equity 1,295   1,780  1,122  Residential real estate 28,942   28,047  17,959  Premium finance receivables—property and casualty 24,512   30,404  36,079  Premium finance receivables—life insurance —   —  —  Consumer and other 38   41  2  Total nonaccrual loans 149,566   173,977  161,059  Total non-performing loans: Commercial 66,577   80,877  63,846  Commercial real estate 28,202   32,828  42,296  Home equity 1,295   1,780  1,122  Residential real estate 28,942   28,047  17,959  Premium finance receivables—property and casualty 37,518   44,754  54,314  Premium finance receivables—life insurance —   327  —  Consumer and other 98   225  150  Total non-performing loans $ 162,632   $ 188,838  $ 179,687  Other real estate owned 24,832   23,615  13,682  Total non-performing assets $ 187,464   $ 212,453  $ 193,369  Total non-performing loans by category as a percent of its own respective category’s period-end balance: Commercial 0.40   % 0.49  % 0.42  % Commercial real estate 0.21   0.25  0.33  Home equity 0.27   0.38  0.26  Residential real estate 0.70   0.71  0.53  Premium finance receivables—property and casualty 0.45   0.54  0.76  Premium finance receivables—life insurance —   0.00  —  Consumer and other 0.07   0.19  0.18  Total non-performing loans 0.31   % 0.37  % 0.38  % Total non-performing assets, as a percentage of total assets 0.27   % 0.31  % 0.30  % Total nonaccrual loans as a percentage of total loans 0.29   % 0.34  % 0.34  % Allowance for credit losses as a percentage of nonaccrual loans 303.67   % 262.71  % 270.53  % (1) Excludes early buy-out loans guaranteed by U.S. government agencies. Early buy-out loans are insured or guaranteed by the FHA or the U.S. Department of Veterans Affairs, subject to indemnifications and insurance limits for certain loans. At this time, management believes reserves are appropriate to absorb losses that are expected upon the ultimate resolution of these credits. Significant increases may occur in subsequent periods due to ongoing macroeconomic uncertainty and related impacts on borrowers. Management will continue to actively review and monitor its loan portfolios, in an effort to identify problem credits in a timely manner. 69 Table of Contents Non-performing Loans Rollforward, excluding early buy-out loans guaranteed by U.S. government agencies The table below presents a summary of non-performing loans for the periods presented:      Three Months Ended Nine Months Ended September 30, September 30, September 30, September 30, (In thousands) 2025 2024 2025 2024 Balance at beginning of period $ 188,838   $ 174,251  $ 170,823   $ 139,030  Additions from becoming non-performing in the respective period 34,805   42,335  111,177   119,853  Additions from assets acquired in the respective period —   189  —   189  Return to performing status (3,399) (362) (11,502) (1,764) Payments received (28,052) (10,894) (49,619) (28,841) Transfer to OREO to other assets (348) (3,680) (2,595) (12,006) Charge-offs (21,526) (21,211) (41,860) (43,694) Net change for premium finance receivables (7,686) (941) (13,792) 6,920  Balance at end of period $ 162,632   $ 179,687  $ 162,632   $ 179,687  Allowance for Credit Losses The allowance for credit losses, specifically the allowance for loans losses and the allowance for unfunded commitment losses, represents management’s estimate of lifetime expected credit losses in the loan portfolio. The allowance for credit losses is determined quarterly using a methodology that incorporates important risk characteristics of each loan. A description of how the Company determines the allowance for credit losses is included in Item 7 - Management’s Discussion and Analysis of Financial Condition and Results of Operations of the 2024 Form 10-K. Management determined that the allowance for credit losses was appropriate at September 30, 2025, and that the loan portfolio is well diversified and well secured, without undue concentration in any specific risk area. While this process involves a high degree of management judgment, the allowance for credit losses is based on a comprehensive, well documented, and consistently applied analysis of the Company’s loan portfolio. This analysis takes into consideration all available information existing as of the financial statement date, including environmental factors such as economic, industry, geographical and political factors, when considered applicable. The relative level of allowance for credit losses is reviewed and compared to industry peers. This review encompasses levels of total non-performing loans, portfolio mix, portfolio concentrations and overall levels of net charge-off. Historical trending of both the Company’s results and the industry peers is also reviewed to analyze comparative significance. 70 Table of Contents Allowance for Credit Losses The following table summarizes the activity in our allowance for credit losses, specifically related to loans and unfunded lending-related commitments, during the periods indicated.   Three Months Ended Nine Months Ended (Dollars in thousands) September 30, 2025 September 30, 2024 September 30, 2025 September 30, 2024 Allowance for credit losses at beginning of period $ 457,063   $ 437,069  $ 436,603   $ 427,265  Provision for credit losses - other 21,771   6,799  68,027   68,389  Provision for credit losses - Day 1 on non-PCD assets acquired during the period —   15,547  —   15,547  Initial allowance for credit losses recognized on PCD assets acquired during the period —   3,004  —   3,004  Other adjustments (88) 30  96   (20) Charge-offs: Commercial 21,597   22,975  37,467   43,774  Commercial real estate 144   95  6,309   21,090  Home equity 27   —  138   74  Residential real estate 26   —  26   61  Premium finance receivables - property & casualty 6,860   7,790  20,320   24,214  Premium finance receivables - life insurance 18   4  30   4  Consumer and other 174   154  500   398  Total charge-offs 28,846   31,018  64,790   89,615  Recoveries: Commercial 1,449   649  4,124   2,078  Commercial real estate 241   30  263   151  Home equity 104   101  350   165  Residential real estate 1   5  139   15  Premium finance receivables - property & casualty 2,459   3,436  9,281   8,613  Premium finance receivables - life insurance —   41  —   54  Consumer and other 37   21  98   68  Total recoveries 4,291   4,283  14,255   11,144  Net charge-offs (24,555) (26,735) (50,535) (78,471) Allowance for credit losses at period end $ 454,191   $ 435,714  $ 454,191   $ 435,714  Annualized net charge-offs (recoveries) by category as a percentage of its own respective category’s average: Commercial 0.49   % 0.61  % 0.28   % 0.41  % Commercial real estate (0.00) 0.00  0.06   0.23  Home equity (0.06) (0.10) (0.06) (0.03) Residential real estate 0.00   0.00  (0.00) 0.00  Premium finance receivables - property & casualty 0.20   0.24  0.19   0.30  Premium finance receivables - life insurance 0.00   0.00  0.00   (0.00) Consumer and other 0.40   0.63  0.43   0.54  Total loans, net of unearned income 0.19   % 0.23  % 0.14   % 0.24  % Loans at period-end $ 52,063,482   $ 47,067,447  Allowance for loan losses as a percentage of loans at period end 0.74   % 0.77  % Allowance for loan and unfunded loan-related commitment losses as a percentage of loans at period end 0.87   0.93  See Note (7) “Allowance for Credit Losses” of the Consolidated Financial Statements presented under Item 1 of this report for further discussion of activity within the allowance for credit losses during the period and the relationship with respective loan balances for each loan category and the total loan portfolio. 71 Table of Contents Other Real Estate Owned In certain circumstances, the Company is required to take action against the real estate collateral of specific loans. The Company uses foreclosure only as a last resort for dealing with borrowers experiencing financial hardships. The Company employs extensive contact and restructuring procedures to attempt to find other solutions for our borrowers. The tables below present a summary of other real estate owned and show the activity for the respective periods and the balance for each property type: Three Months Ended Nine Months Ended (In thousands) September 30, 2025 September 30, 2024 September 30, 2025 September 30, 2024 Balance at beginning of period $ 23,615   $ 19,731  $ 23,116   $ 13,309  Disposal/resolved —   (9,729) —   (11,481) Transfers in at fair value, less costs to sell 1,217   3,680  2,532   12,061  Fair value adjustments —   —  (816) (207) Balance at end of period $ 24,832   $ 13,682  $ 24,832   $ 13,682  Period End (In thousands) September 30, 2025 June 30, 2025 September 30, 2024 Residential real estate $ —   $ —  $ —  Commercial real estate 24,832   23,615  13,682  Total $ 24,832   $ 23,615  $ 13,682  Deposits Total deposits at September 30, 2025 were $56.7 billion, an increase of $5.3 billion, or 10%, compared to total deposits at September 30, 2024. See Note (10) “Deposits” to the Consolidated Financial Statements in Item 1 of this report for a summary of period end deposit balances. The following table sets forth, by category, the maturity of time certificates of deposit as of September 30, 2025: Time Certificates of Deposit Maturity/Re-pricing Analysis As of September 30, 2025 (Dollars in thousands) Total Time Certificates of Deposits Weighted-Average Rate of Maturing Time Certificates of Deposit 1-3 months $ 4,450,481   3.83   % 4-6 months 3,165,121   3.72   7-9 months 1,489,181   3.64   10-12 months 973,156   3.79   13-18 months 196,146   3.13   19-24 months 79,669   3.00   24+ months 64,702   3.00   Total $ 10,418,456   3.74   % 72 Table of Contents The following table sets forth, by category, the composition of average deposit balances and the relative percentage of total average deposits for the periods presented: Three Months Ended September 30, 2025 June 30, 2025 September 30, 2024 (Dollars in thousands) Balance Percent Balance Percent Balance Percent Non-interest-bearing $ 10,791,709   19   % $ 10,643,798  20  % $ 10,271,613  21  % NOW and interest-bearing demand deposits 6,687,292   12   6,423,050  12  5,174,673  11  Wealth management deposits 1,604,142   3   1,552,989  3  1,362,747  3  Money market 19,431,021   35   18,184,754  34  16,436,111  34  Savings 6,723,325   12   6,578,698  12  6,096,746  12  Time certificates of deposit 10,319,719   19   9,841,702  19  9,598,109  19  Total average deposits $ 55,557,208   100   % $ 53,224,991  100  % $ 48,939,999  100  % Total average deposits for the third quarter of 2025 were $55.6 billion, an increase of $6.6 billion, or 14%, from the third quarter of 2024. Total deposits increased in the third quarter of 2025 as compared to the third quarter of 2024 primarily as a result of the Company’s increased marketing efforts to retain and attract deposits to support continued loan growth. Wealth management deposits are funds from the brokerage customers of Wintrust Investments, CDEC and trust and asset management customers of the Company which have been placed into deposit accounts of the banks (“wealth management deposits” in the table above). Wealth Management deposits consist primarily of money market accounts. Consistent with reasonable interest rate risk parameters, these funds have generally been invested in loan production of the banks as well as other investments suitable for banks. Brokered Deposits While the Company obtains a portion of its total deposits through brokered deposits, the Company does so primarily as an asset-liability management tool to assist in the management of interest rate risk, and the Company does not consider brokered deposits to be a vital component of its current liquidity resources. Historically, brokered deposits have represented a small component of the Company’s total deposits outstanding, as set forth in the table below: September 30, December 31, (Dollars in thousands) 2025 2024 2024 2023 2022 Total deposits $ 56,711,381   $ 51,404,966  $ 52,512,349  $ 45,397,170  $ 42,902,544  Brokered deposits 3,914,074   4,080,401  3,598,102  4,216,718  3,174,093  Brokered deposits as a percentage of total deposits 6.9   % 7.9  % 6.9  % 9.3  % 7.4  % Brokered deposits include certificates of deposit obtained through deposit brokers, deposits received through the Certificate of Deposit Account Registry Program, and certain deposits of brokerage customers from unaffiliated companies which have been placed into deposit accounts of the banks. Other Funding Sources Although deposits are the Company’s primary source of funding its interest-earning assets, the Company’s ability to manage the types and terms of deposits is somewhat limited by customer preferences and market competition. As a result, in addition to deposits and the issuance of equity securities and the retention of earnings, the Company uses several other funding sources to support its growth. These sources include FHLB advances, notes payable, short-term borrowings, secured borrowings, subordinated debt and junior subordinated debentures. The Company evaluates the terms and unique characteristics of each source, as well as its asset-liability management position, in determining the use of such funding sources. 73 Table of Contents The following table sets forth, by category, the composition of the average balances of other funding sources for the quarterly periods presented: Three Months Ended September 30, June 30, September 30, (In thousands) 2025 2025 2024 FHLB advances $ 3,151,310   $ 3,151,310  $ 3,178,973  Other borrowings: Notes payable 128,425   135,556  156,949  Short-term borrowings 24   —  37  Secured borrowings 430,265   403,622  407,993  Other 56,178   54,479  57,813  Total other borrowings $ 614,892   $ 593,657  $ 622,792  Subordinated notes 298,481   298,398  298,135  Junior subordinated debentures 253,566   253,566  253,566  Total other funding sources $ 4,318,249   $ 4,296,931  $ 4,353,466  See Note (11) “FHLB Advances, Other Borrowings and Subordinated Notes” and Note (12) “Junior Subordinated Debentures” of the Consolidated Financial Statements presented under Item 1 of this report for details of period end balances and other information for these various funding sources. The Company hereby incorporates by reference Note (11) and Note (12) of the Consolidated Financial Statements presented under Item 1 of this report in its entirety. Shareholders’ Equity The following tables reflect various consolidated measures of capital as of the dates presented and the capital guidelines established for a bank holding company: September 30,    2025 (2) June 30,    2025 (3) September 30, 2024 Tier 1 leverage ratio 9.5   % 10.2  % 9.6  % Risk-based capital ratios: Tier 1 capital ratio 10.9   11.5  10.6  Common equity tier 1 capital ratio 10.2   10.0  9.8  Total capital ratio 12.4   13.0  12.2  Other ratio: Total average equity-to-total average assets (1) 10.2   10.4  9.8  (1) Based on quarterly average balances. (2) September 30, 2025 capital ratios impacted by redemption of Preferred Stock Series D and Preferred Stock Series E. (3) June 30, 2025 capital ratios impacted by issuance of Preferred Stock Series F. Minimum Capital Requirements Minimum Ratio + Capital Conservation Buffer (1) Minimum Well Capitalized (2) Tier 1 leverage ratio 4.0  % N/A N/A Risk-based capital ratios: Tier 1 capital ratio 6.0  8.5  6.0  Common equity tier 1 capital ratio 4.5  7.0  N/A Total capital ratio 8.0  10.5  10.0  (1) Reflects the Capital Conservation Buffer of 2.5%. (2) Reflects the well-capitalized standard applicable to the Company for purposes of the Federal Reserve’s Regulation Y. The Federal Reserve has not yet revised the well-capitalized standard for bank holding companies (“BHCs”) to reflect the higher capital requirements imposed under the U.S. Basel III Rule or to add Common Equity Tier 1 capital ratio and Tier 1 leverage ratio requirements to this standard. As a result, the Common Equity Tier 1 capital ratio and Tier 1 leverage ratio are denoted as “N/A” in this column. If the Federal Reserve were to apply the same or a very similar well-capitalized 74 Table of Contents standard to BHCs as the standard applicable to our subsidiary banks, we believe the Company’s capital ratios as of September 30, 2025 would exceed such revised well-capitalized standard. The Company’s principal sources of funds at the holding company level are dividends from its subsidiaries, borrowings under its loan agreement with unaffiliated banks and proceeds from the issuances of subordinated debt and additional equity. Refer to Notes (11) and (12) of the Consolidated Financial Statements in Item 1 for further information on these various funding sources. See Note (23) “Shareholders’ Equity” of the Consolidated Financial Statements presented under Item 7 of the 2024 Form 10-K for details on the Company’s issuance of Series D Preferred Stock in June 2015, Series E Preferred Stock and associated Depositary Shares in May 2020, and additional common stock offering in June 2022. On July 15, 2025, the Company redeemed all 5,000,000 issued and outstanding shares of the Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series D (the “Series D Preferred Stock”), for a redemption price of $25.00 per share or $125.0 million. Also, the Company redeemed all 11,500 issued and outstanding shares of 6.875% Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series E (the “Series E Preferred Stock”), and all of the related 11,500,000 issued and outstanding depositary shares (the “Depositary Shares”), each representing a 1/1,000 th interest in a share of Series E Preferred Stock, for a redemption price of $25,000 per share of Series E Preferred Stock (or $25.00 per Depositary Share) or $287.5 million. The regular quarterly dividends on the Series D Preferred Stock and the Series E Preferred Stock represented by the Depositary Shares were paid separately on July 15, 2025 to holders of record on July 1, 2025. Accordingly, the redemption price did not include any accrued and unpaid dividends. In May 2025, the Company issued 17,000 shares of fixed-rate reset non-cumulative perpetual preferred stock, Series F, liquidation preference $25,000 per share (the “Series F Preferred Stock”) as part of a $425 million public offering of 17,000,000 depository shares, each representing a 1/1000th interest in a share of Series F Preferred Stock. When, as and if declared, dividends on the Series F Preferred Stock are payable quarterly in arrears at a fixed rate of 7.875% per annum starting October 15, 2025. The redemption of the Series D Preferred Stock and Series E Preferred Stock in July 2025 was funded with a portion of the net proceeds from the issuance of the Series F Preferred Stock. The Board of Directors approves dividends from time to time, however, the ability to declare a dividend is limited by the Company’s financial condition, the terms of the Company’s Preferred Stock, the terms of the Company’s Trust Preferred Securities offerings and under certain financial covenants in the Company’s revolving and term facilities. In January, April and July of 2025, the Company declared a quarterly cash dividend of $0.50 per common share. In January, April, July and October of 2024, the Company declared a quarterly cash dividend of $0.45 per common share. At the October 2025 meeting of the Board of Directors, a quarterly cash dividend of $0.50 per common share ($2.00 on an annualized basis) was declared. It is payable on November 20, 2025 to shareholders of record as of November 6, 2025. Per GAAP, prior issuance costs from Series D Preferred Stock and Series E Preferred Stock were reclassified, upon redemption, from capital surplus and recognized through retained earnings. These amounts do not impact operating net income but are considered as a reduction to net income available to common shareholders and impact earnings per share calculations. The following table represents the Series F Preferred Stock offering and Series D and Series E Preferred Stock redemption impact on diluted EPS: Three Months Ended (Dollars and shares in thousands, except per share data) September 30, 2025 December 31, 2025 Series D and Series E Preferred Stock Quarterly Dividend $ —  $ —  Series F Preferred Stock First Dividend (1) (13,295) —  Series F Preferred Stock Regular Quarterly Dividend (2) —  (8,367) Series D Preferred Stock Issuance Costs (non-recurring) (4,158) —  Series E Preferred Stock Issuance Costs (non-recurring) (9,888) —  Total Impact $ (27,341) $ (8,367) Average diluted common shares (3) 67,980  67,980  Diluted EPS Impact $ (0.40) $ (0.12) (1) Series F Preferred Stock First Dividend covers the time period May 22, 2025 to October 15, 2025 and was declared by the Board of Directors in July 2025. (2) Series F Preferred Stock Quarterly Dividend amount, if declared by the Board of Directors. (3) Average diluted common shares held constant at December 31, 2025 for illustrative purposes. 75 Table of Contents The Company continues to leverage its capital management framework to assess and monitor risk when making capital decisions. Management is committed to maintaining the Company’s capital levels above the “Well Capitalized” levels established by the FRB for bank holding companies. LIQUIDITY The Company manages the liquidity position of its banking operations to ensure that sufficient funds are available to meet customers’ needs for loans and deposit withdrawals. The management process includes the utilization of stress testing processes and other aspects of the Company's liquidity management framework to assess and monitor risk, and inform decision making. The liquidity to meet the demands of customers is provided by maturing assets, liquid assets that can be converted to cash and the ability to attract funds from external sources. Liquid assets refer to money market assets such as Federal funds sold and interest-bearing deposits with banks, as well as available-for-sale debt securities and equity securities with readily determinable fair values which are not pledged to secure public funds. In addition, trade date receivables represent certain sales or calls of available-for-sale securities that await cash settlement, typically in the month following the trade date. We maintain our liquid assets to ensure that we would have the balance sheet strength to serve our clients. As a result, the Company believes that it has sufficient funds and access to funds to effectively meet its working capital and other needs. The Company will continue to prudently evaluate liquidity sources, including the management of availability with the FHLB and FRB and utilization of the revolving credit facility with unaffiliated banks. Please refer to Management’s Discussion and Analysis of Financial Condition and Results of Operation -Interest-Earning Assets, -Deposits, -Other Funding Sources and -Shareholders’ Equity sections of this report for additional information regarding the Company’s liquidity position. INFLATION A banking organization’s assets and liabilities are primarily monetary. Changes in the rate of inflation typically do not have as great an impact on the financial condition of a bank as do changes in interest rates. Moreover, interest rates do not necessarily change at the same percentage as inflation. Accordingly, changes in inflation are not expected to have as material an impact on the Company’s business as entities operating in other industries. An analysis of the Company’s asset and liability structure provides the best indication of how the organization is positioned to respond to changing interest rates. See “Quantitative and Qualitative Disclosures About Market Risk” section of this report for additional information. 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 2024 Annual Report on Form 10-K and in any of the Company’s subsequent SEC filings. The Company intends such forward-looking statements to be covered by the safe harbor provisions for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995, and is including this statement for purposes of invoking these safe harbor provisions. Such forward-looking statements may be deemed to include, among other things, statements relating to the Company’s future financial performance, the performance of its loan portfolio, the expected amount of future credit reserves and charge-offs, delinquency trends, growth plans, regulatory developments, securities that the Company may offer from time to time, and management’s long-term performance goals, as well as statements relating to the anticipated effects on the Company’s financial condition and results of operations from expected developments or events, the Company’s business and growth strategies, including future acquisitions of banks, specialty finance or wealth management businesses, internal growth and plans to form additional de novo banks or branch offices. Actual results could differ materially from those addressed in the forward-looking statements as a result of numerous factors, including the following: • economic conditions and events that affect the economy, housing prices, the job market and other factors that may adversely affect the Company’s liquidity and the performance of its loan portfolios, including an actual or threatened U.S. government shutdown, debt default or rating downgrade, particularly in the markets in which it operates; • negative effects suffered by us or our customers resulting from changes in U.S. or international trade policies; • the extent of defaults and losses on the Company’s loan portfolio, which may require further increases in its allowance for credit losses; • estimates of fair value of certain of the Company’s assets and liabilities, which could change in value significantly from 76 Table of Contents 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; 77 Table of Contents • 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 these forward-looking statements. The reader is cautioned not to place undue reliance on any forward-looking statement made by the Company. Any such statement speaks only as of the date the statement was made or as of such date that may be referenced within the statement. The Company undertakes no obligation to update any forward-looking statement to reflect the impact of circumstances or events after the date of this report. 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. ITEM 3 QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK 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. This effort entails providing a reasonable balance between interest rate risk, credit risk, liquidity risk and maintenance of yield. Asset-liability management policies are established and monitored by management in conjunction with the boards of directors of the banks, subject to general oversight by the Risk Management Committee of the Company’s Board. The policies establish guidelines for acceptable limits on the sensitivity of the market value of assets and liabilities to changes in interest rates. Interest rate risk arises when the maturity or re-pricing periods and interest rate indices of the interest-earning assets, interest-bearing liabilities, and derivative financial instruments are different. It is the risk that changes in the level of market interest rates will result in disproportionate changes in the value of, and the net earnings generated from, the Company’s interest-earning assets, interest-bearing liabilities and derivative financial instruments. The Company continuously monitors not only the organization’s current net interest margin, but also the historical trends of these margins. In addition, management attempts to identify potential adverse changes in net interest income in future years as a result of interest rate fluctuations by performing simulation analysis of various interest rate environments. If a potential adverse change in net interest margin and/or net income is identified, management is prepared to take appropriate action with its asset-liability structure to mitigate these potentially adverse situations. Please refer to Item 2 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” for further discussion of the net interest margin. Since the Company’s primary source of interest-bearing liabilities is from customer deposits, the Company’s ability to manage the types and terms of such deposits is somewhat limited by customer preferences and local competition in the market areas in which the banks operate. The rates, terms and interest rate indices of the Company’s interest-earning assets result primarily from the Company’s strategy of investing in loans and securities that permit the Company to limit its exposure to interest rate risk, together with credit risk, while at the same time achieving an acceptable interest rate spread. The Company’s exposure to interest rate risk is reviewed on a regular basis by management and the Risk Management Committees of the boards of directors of the banks and the Company. The objective of the review is to measure the effect on net income and to adjust balance sheet and derivative financial instruments to minimize the inherent risk while at the same time maximize net interest income. 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 Scenarios at September 30, 2025, June 30, 2025 and September 30, 2024 is as follows: 78 Table of Contents Static Shock Scenarios +200 Basis Points +100 Basis Points -100 Basis Points -200 Basis Points September 30, 2025 (2.3) % (0.8) % 0.0   % (0.4) % June 30, 2025 (1.5) (0.4) (0.2) (1.2) % September 30, 2024 1.2  1.1  0.4  (0.9) % Ramp Scenarios +200 Basis Points +100 Basis Points -100 Basis Points -200 Basis Points September 30, 2025 (0.2) % (0.1) % 0.1   % (0.1) % June 30, 2025 0.0  0.0  (0.1) (0.4) % September 30, 2024 1.6  1.2  0.7  0.5  % One method utilized by financial institutions, including the Company, to manage interest rate risk is to enter into derivative financial instruments. Derivative financial instruments include interest rate swaps, interest rate caps, floors and collars, futures, forwards, option contracts and other financial instruments with similar characteristics. Additionally, the Company enters into commitments to fund certain mortgage loans (interest rate locks) to be sold into the secondary market and forward commitments for the future delivery of mortgage loans to third party investors. See Note (14) “Derivative Financial Instruments” of the Consolidated Financial Statements in Item 1 of this report for further information on the Company’s derivative financial instruments. As shown above, the magnitude of potential changes in net interest income in various interest rate scenarios has continued to remain relatively neutral. As the current interest rate cycle progressed, management took action to reposition its sensitivity to interest rates. 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. Periodically, the Company enters into certain covered call option transactions related to certain securities held by the Company. The Company uses these option transactions (rather than entering into other derivative interest rate contracts, such as interest rate floors) to economically hedge positions and compensate for net interest margin compression by increasing the total return associated with the related securities through fees generated from these options. Although the revenue received from these options is recorded as non-interest income rather than interest income, the increased return attributable to the related securities from these options contributes to the Company’s overall profitability. The Company’s exposure to interest rate risk may be impacted by these transactions. To further mitigate this risk, the Company may acquire fixed rate term debt or use financial derivative instruments. There were no covered call options outstanding as of September 30, 2025 and September 30, 2024. See Note (14) “Derivative Financial Instruments” of the Consolidated Financial Statements in Item 1 of this report for further information on the Company’s fees from covered call options for the nine months ended September 30, 2025 and September 30, 2024. ITEM 4 CONTROLS AND PROCEDURES As of the end of the period covered by this report, management of the Company, under the supervision and with the participation of the Chief Executive Officer and Chief Financial Officer, carried out an evaluation of the effectiveness of the design and operation of the Company’s disclosure controls and procedures as defined under Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended (“Exchange Act”). Based upon, and as of the date of that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the Company’s disclosure controls and procedures were effective, in ensuring the information relating to the Company (and its consolidated subsidiaries) required to be disclosed by the Company in the reports it files or submits under the Exchange Act was recorded, processed, summarized and reported in a timely manner. There were no changes in the Company’s internal control over financial reporting (as defined in Exchange Act Rule 13a-15(f)) during the period that have materially affected, or are reasonably likely to materially affect, our internal controls over financial reporting. 79 Table of Contents PART II — Item 1: Legal Proceedings In accordance with applicable accounting principles, the Company establishes an accrued liability for litigation and threatened litigation actions and proceedings when those actions present loss contingencies, which are both probable and estimable. In actions for which a loss is reasonably possible in future periods, the Company determines whether it can estimate a loss or range of possible loss. To determine whether a possible loss is estimable, the Company reviews and evaluates its material litigation on an ongoing basis, in conjunction with any outside counsel handling the matter, in light of potentially relevant factual and legal developments. This review may include information learned through the discovery process, rulings on substantive or dispositive motions, and settlement discussions. Wintrust Mortgage California PAGA Matter On May 24, 2022, a former Wintrust Mortgage employee filed a California Private Attorney General Act (“PAGA”) suit, not individually, but as representative of all Wintrust Mortgage’s California hourly employees, against Wintrust Mortgage in the Superior Court of San Diego County, California. Plaintiff alleges Wintrust Mortgage failed to provide: (i) accurate sick leave accrual and pay; (ii) overtime wages; (iii) accurately itemized wage statements; (iv) meal breaks and meal premiums; (v) timely payment of earned wages; (vi) payment of all earned wages; and (vii) payment of all vested vacation hours. Wintrust Mortgage disputes the validity of Plaintiff’s claims and believes, to the extent there were defects in complying with California law governing the payment of compensation to Plaintiff, such errors would have been de minimis. Plaintiff also has an arbitration agreement with a collective and class action waiver and on January 19, 2023, Wintrust Mortgage moved to compel arbitration. The court stayed litigation pending mediation, which was held on May 13, 2024. The parties agreed to settle the dispute for an immaterial amount. On October 16, 2024, the court entered an order approving the settlement and on December 31, 2024, the funds were disbursed to the settlement administrator. Wintrust Mortgage Fair Lending Matter On May 25, 2022, a Wintrust Mortgage customer filed a putative class action and asserted individual claims against Wintrust Mortgage and Wintrust Financial Corporation in the District Court for the Northern District of Illinois. Plaintiff alleges that Wintrust Mortgage discriminated against black/African American borrowers and brings class claims under the Equal Credit Opportunity Act, Sections 1981 and 1982 under Chapter 42 of the United States Code; and the Fair Housing Act of 1968. Plaintiff also asserts individual claims under theories of promissory estoppel, fraudulent inducement, and breach of contract. On September 23, 2022, Wintrust filed a motion to dismiss the entire suit and the court granted that motion to dismiss on September 27, 2023 and gave Plaintiff until October 20, 2023 to file an amended complaint. Plaintiff timely filed an amended complaint. Wintrust moved to dismiss the amended complaint on November 21, 2023. Wintrust vigorously disputes these allegations, and Wintrust otherwise lacks sufficient information to estimate the amount of any potential liability. Other Matters In addition, the Company and its subsidiaries, from time to time, are subject to pending and threatened legal action and proceedings arising in the ordinary course of business. Based on information currently available and upon consultation with counsel, management believes that the eventual outcome of any pending or threatened legal actions and proceedings described above, including our ordinary course litigation, will not have a material adverse effect on the operations or financial condition of the Company. However, it is possible that the ultimate resolution of these matters, if unfavorable, may be material to the results of operations or financial condition for a particular period. Item 1A: Risk Factors There have been no material changes from the risk factors set forth under Part I, Item 1A “Risk Factors” in the 2024 Form 10-K. Item 2: Unregistered Sales of Equity Securities, Use of Proceeds and Issuer Purchases of Equity Securities No purchases of the Company’s common shares were made by or on behalf of the Company or any “affiliated purchaser” as defined in Rule 10b-18(a)(3) under the Exchange Act, as amended, during the nine months ended September 30, 2025. 80 Table of Contents Item 5: Other Information Securities Trading Plans of Directors and Officers During the three months ended September 30, 2025 , none of our directors or officers adopted or terminated a Rule 10b5-1 trading plan or adopted or terminated a non-Rule 10b5-1 trading arrangement (as each term is defined in Item 408(a) of Regulation S-K under the Exchange Act). Item 6: Exhibits: (a) Exhibits 3.1 Statement of Resolution of the Board o f Directors of Wintrust Financial Corporation Regarding the Series D Preferred Stock (incorporated by reference to Exhibit 3.1 of the Company's Current Report on Form 8-K, filed with the Securities and Exchange Commission on July 16, 2025). 3.2 Statement of Resolution of the Board o f Directors of Wintrust Financial Corporation Regarding the Series E Preferred Stock (incorporated by reference to Exhibit 3.2 of the Company's Current Report on Form 8-K, filed with the Securities and Exchange Commission on July 16, 2025). 31.1 Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 31.2 Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 32.1 Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. 101.INS The XBRL Instance Document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document (1) 101.SCH XBRL Taxonomy Extension Schema Document 101.CAL XBRL Taxonomy Extension Calculation Linkbase Document 101.LAB XBRL Taxonomy Extension Label Linkbase Document 101.PRE XBRL Taxonomy Extension Presentation Linkbase Document 101.DEF XBRL Taxonomy Extension Definition Linkbase Document 104 Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101) (1) Includes the following financial information included in the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2025, formatted in iXBRL (Inline eXtensible Business Reporting Language): (i) the Consolidated Statements of Condition, (ii) the Consolidated Statements of Income, (iii) the Consolidated Statements of Comprehensive Income, (iv) the Consolidated Statements of Changes in Shareholders’ Equity, (v) the Consolidated Statements of Cash Flows, and (vi) Notes to Consolidated Financial Statements 81 Table of Contents SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. WINTRUST FINANCIAL CORPORATION (Registrant) Date: November 6, 2025 /s/ DAVID L. STOEHR David L. Stoehr Executive Vice President and Chief Financial Officer (Principal Financial Officer and duly authorized officer) Date: November 6, 2025 /s/ JEFFREY D. HAHNFELD Jeffrey D. Hahnfeld Executive Vice President, Controller and Chief Accounting Officer (Principal Accounting Officer and duly authorized officer) 82