Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION 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 ___________________________ ...

[Executive Summary](index=1&type=section&id=Executive%20Summary) [Overall Performance](index=1&type=section&id=Overall%20Performance) Wintrust Financial Corporation reported record net income and pre-tax, pre-provision income for both the first nine months and the third quarter of 2025, demonstrating strong financial momentum driven by net interest income expansion and balance sheet growth Key Financial Performance Metrics | Metric | First Nine Months 2025 | First Nine Months 2024 | Change | Q3 2025 | Q2 2025 | Change | | :-------------------------------- | :--------------------- | :--------------------- | :----- | :------ | :------ | :----- | | Net Income | $600.8 million | $509.7 million | +17.9% | $216.3 million | $195.5 million | +10.6% | | Diluted EPS | $8.25 | $7.67 | +7.6% | $2.78 | $2.78 | 0% | | Pre-tax, Pre-provision Income (non-GAAP) | $884.1 million | $778.1 million | +13.6% | $317.8 million | $289.3 million | +9.8% | - Timothy S. Crane, President and CEO, highlighted continued momentum with **record net income**, **net interest income**, **strong balance sheet growth**, and **prudent net interest margin management**[4](index=4&type=chunk) [Q3 2025 Highlights](index=1&type=section&id=Q3%202025%20Highlights) The third quarter of 2025 saw significant growth in total loans, deposits, and assets, alongside an increase in net interest income. Earnings per diluted common share were impacted by one-time preferred stock related costs Q3 2025 Key Financial Changes | Metric | Q3 2025 vs Q2 2025 Change | | :-------------------------------- | :-------------------------- | | Total loans | +$1.0 billion (8% annualized) | | Total deposits | +$894.6 million (6% annualized) | | Total assets | +$646.3 million (4% annualized) | | Net interest income | +$20.3 million to $567.0 million | | Net interest margin (FTE, non-GAAP) | 3.50% (within expected range) | | Net gains on investment securities | $3.0 million (vs $650,000 in Q2 2025) | - Diluted EPS of **$2.78** was impacted by one-time recognition of prior issuance costs related to Preferred Stock Series D and E (**$14.0 million**, or **$0.21 per diluted common share**) and excess dividend for Preferred Stock Series F (**$4.9 million**, or **$0.07 per diluted common share**)[5](index=5&type=chunk) - Strong loan growth was diversified across all major portfolios, funded by deposit growth, resulting in a loans-to-deposits ratio of **91.8%**[6](index=6&type=chunk) - Credit quality remained strong with low net charge-offs and non-performing loans, and a core loan allowance for credit losses of **1.34%**[6](index=6&type=chunk) [Financial Performance Overview](index=9&type=section&id=Financial%20Performance%20Overview) [Key Operating Measures](index=13&type=section&id=Key%20Operating%20Measures) Wintrust's key operating measures for Q3 2025 showed strong sequential and year-over-year growth in net income, net revenue, and balance sheet items, while maintaining a stable net interest margin and improving efficiency Key Operating Measures (in thousands) | Metric | Sep 30, 2025 | Jun 30, 2025 | Sep 30, 2024 | % Change from Q2 2025 | % Change from Q3 2024 | | :----------------------------------- | :----------- | :----------- | :----------- | :-------------------- | :-------------------- | | Net income | $216,254 | $195,527 | $170,001 | 11% | 27% | | Net income per common share – Diluted | $2.78 | $2.78 | $2.47 | — | 13% | | Net revenue | $697,837 | $670,783 | $615,730 | 4% | 13% | | Net interest income | $567,010 | $546,694 | $502,583 | 4% | 13% | | Net interest margin | 3.48% | 3.52% | 3.49% | (4) bps | (1) bps | | Total assets | $69,629,638 | $68,983,318 | $63,788,424 | 4% (annualized) | 9% (annualized) | | Total loans | $52,063,482 | $51,041,679 | $47,067,447 | 8% (annualized) | 11% (annualized) | | Total deposits | $56,711,381 | $55,816,811 | $51,404,966 | 6% (annualized) | 10% (annualized) | - The net overhead ratio improved, decreasing by **12 basis points** sequentially and **17 basis points** year-over-year, indicating higher efficiency[42](index=42&type=chunk)[43](index=43&type=chunk) [Selected Financial Highlights](index=14&type=section&id=Selected%20Financial%20Highlights) A detailed look at Wintrust's financial condition and income statement data over several quarters and nine-month periods reveals consistent growth in assets, loans, and deposits, alongside improving profitability ratios Selected Financial Highlights (in thousands) | Metric | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | | :----------------------------------- | :----------- | :----------- | :----------- | :----------- | :----------- | | Total assets | $69,629,638 | $68,983,318 | $65,870,066 | $64,879,668 | $63,788,424 | | Total loans | $52,063,482 | $51,041,679 | $48,708,390 | $48,055,037 | $47,067,447 | | Total deposits | $56,711,381 | $55,816,811 | $53,570,038 | $52,512,349 | $51,404,966 | | Net interest income (9M YTD) | $1,640,178 (2025) | - | - | - | $1,437,387 (2024) | | Net income (9M YTD) | $600,820 (2025) | - | - | - | $509,683 (2024) | | Return on average assets | 1.26% | 1.19% | 1.20% | 1.16% | 1.11% | | Return on average common equity | 11.58% | 12.07% | 12.21% | 11.82% | 11.63% | | Period-end loans to deposits ratio | 91.8% | 91.4% | 90.9% | 91.5% | 91.6% | | Common equity to assets ratio | 9.5% | 9.3% | 9.4% | 9.1% | 9.4% | [Detailed Financial Analysis](index=9&type=section&id=Detailed%20Financial%20Analysis) [Balance Sheet](index=9&type=section&id=Balance%20Sheet) Wintrust's balance sheet grew in Q3 2025, with total assets increasing by $646.3 million and total loans by $1.0 billion, driven by diversified growth across all major loan portfolios. Total liabilities increased due to strong organic deposit growth, maintaining a healthy loans-to-deposits ratio Balance Sheet Highlights (in millions) | Metric | Q3 2025 | Q2 2025 | Change (QoQ) | | :---------------- | :----------- | :----------- | :----------- | | Total assets | $69,629.6 | $68,983.3 | +$646.3 million | | Total loans | $52,063.5 | $51,041.7 | +$1.0 billion | | Total liabilities | $62,583.9 | $61,757.6 | +$826.3 million | | Total deposits | $56,711.4 | $55,816.8 | +$894.6 million | | Loans-to-deposits ratio | 91.8% | - | - | - The increase in loans was driven by growth across all major loan portfolios, and strong organic deposit growth was supported by diverse product offerings[16](index=16&type=chunk)[17](index=17&type=chunk) [Net Interest Income](index=9&type=section&id=Net%20Interest%20Income) Net interest income increased in Q3 2025, primarily due to significant average earning asset growth. However, the net interest margin experienced a slight decline, influenced by a decrease in loan yields and a minor increase in funding costs Net Interest Income and Margin Trends | Metric | Q3 2025 | Q2 2025 | Change (QoQ) | | :-------------------------------- | :----------- | :----------- | :----------- | | Net interest income | $567.0 million | $546.7 million | +$20.3 million | | Average earning asset growth | $2.4 billion (15% annualized) | - | - | | Net interest margin (GAAP) | 3.48% | 3.52% | (4) bps | | Net interest margin (FTE, non-GAAP) | 3.50% | 3.54% | (4) bps | | Yield on earning assets | 5.93% | 5.96% | (3) bps | | Loan yields | 6.44% | 6.48% | (4) bps | | Funding cost on interest-bearing deposits | 3.15% | 3.14% | +1 bp | [Asset Quality](index=9&type=section&id=Asset%20Quality) Asset quality remained stable in Q3 2025, with a slight decrease in the allowance for credit losses and a stable provision for credit losses. While net charge-offs increased, non-performing assets and loans improved, reflecting disciplined credit management and appropriate reserves Asset Quality Metrics (in millions) | Metric | Sep 30, 2025 | Jun 30, 2025 | Change (QoQ) | | :------------------------------------------------ | :----------- | :----------- | :----------- | | Allowance for credit losses | $454.6 million | $457.5 million | -$2.9 million | | Provision for credit losses | $21.8 million | $22.2 million | -$0.4 million | | Net charge-offs | $24.6 million | $13.3 million | +$11.3 million | | Net charge-offs as % of average total loans (annualized) | 19 bps | 11 bps | +8 bps | | Non-performing assets | $187.5 million | $212.5 million | -$25.0 million | | Non-performing assets as % of total assets | 0.27% | 0.31% | -0.04% | | Non-performing loans | $162.6 million | $188.8 million | -$26.2 million | | Non-performing loans as % of total loans | 0.31% | 0.37% | -0.06% | - Management believes the allowance for credit losses is appropriate, reflecting stable credit quality and an improved macroeconomic forecast, with qualitative additions for credit spreads due to future economic uncertainty[22](index=22&type=chunk)[23](index=23&type=chunk) [Non-Interest Income](index=11&type=section&id=Non-Interest%20Income) Non-interest income increased in Q3 2025, primarily driven by higher wealth management revenue, increased mortgage banking production, and significant net gains on investment securities Non-Interest Income Components (in millions) | Metric | Q3 2025 | Q2 2025 | Change (QoQ) | | :-------------------------------- | :----------- | :----------- | :----------- | | Total non-interest income | $130.8 million | $124.1 million | +$6.7 million | | Wealth management revenue | +$367,000 | - | - | | Mortgage banking revenue | $24.5 million | $23.2 million | +$1.3 million | | Net gains on investment securities | $3.0 million | $650,000 | +$2.35 million | - Wealth management revenue growth was driven by increased asset valuations and higher transactional brokerage business[28](index=28&type=chunk) - Mortgage banking revenue increased due to higher production revenue[29](index=29&type=chunk) - Net gains on investment securities were primarily from unrealized gains on equity investment securities[30](index=30&type=chunk) [Non-Interest Expense](index=11&type=section&id=Non-Interest%20Expense) Non-interest expense slightly decreased in Q3 2025, primarily due to lower professional fees and reduced acquisition-related costs, leading to an improved expense-to-asset ratio Non-Interest Expense Components (in millions) | Metric | Q3 2025 | Q2 2025 | Change (QoQ) | | :-------------------------------- | :----------- | :----------- | :----------- | | Total non-interest expense | $380.0 million | $381.5 million | -$1.5 million | | Non-interest expense as % of average assets | 2.21% | - | - | | Professional fees expense | $7.5 million | $9.2 million | -$1.8 million | | Macatawa Bank acquisition-related costs | $471,000 | $2.9 million | -$2.4 million | - The decrease in professional fees was primarily due to lower consulting services[33](index=33&type=chunk) [Income Taxes](index=11&type=section&id=Income%20Taxes) Income tax expense increased in Q3 2025, resulting in a slightly higher effective tax rate compared to the previous quarter Income Tax Metrics | Metric | Q3 2025 | Q2 2025 | Change (QoQ) | | :---------------- | :----------- | :----------- | :----------- | | Income tax expense | $79.8 million | $71.6 million | +$8.2 million | | Effective tax rate | 27.0% | 26.8% | +0.2% | [Business Segment Review](index=11&type=section&id=Business%20Segment%20Review) [Community Banking](index=11&type=section&id=Community%20Banking) The Community Banking segment expanded its commercial, commercial real estate, and residential real estate loan portfolios in Q3 2025, supported by solid loan pipelines and increased mortgage banking and service charges on deposit accounts - Community banking increased its commercial, commercial real estate, and residential real estate loan portfolios in the third quarter of 2025[37](index=37&type=chunk) Community Banking Revenue (in millions) | Metric | Q3 2025 | Q2 2025 | Change (QoQ) | | :-------------------------------- | :----------- | :----------- | :----------- | | Mortgage banking revenue | $24.5 million | $23.2 million | +$1.3 million | | Service charges on deposit accounts | $19.8 million | $19.5 million | +$0.3 million | - Gross commercial and commercial real estate loan pipelines remained solid, indicating expected continued loan growth in Q4 2025[38](index=38&type=chunk) [Specialty Finance](index=12&type=section&id=Specialty%20Finance) The Specialty Finance segment saw strong originations in insurance premium financing and increased leasing portfolio balances in Q3 2025, while outsourced administrative services revenue remained stable - Originations within the insurance premium financing receivables portfolios totaled **$5.5 billion** during Q3 2025, with average balances increasing by **$945.4 million** compared to Q2 2025[39](index=39&type=chunk) Leasing Division Portfolio Balances (in millions) | Leasing Division Portfolio Balances | Sep 30, 2025 | Jun 30, 2025 | | :-------------------------------- | :----------- | :----------- | | Capital leases | $2.8 billion | $2.8 billion | | Loans | $1.2 billion | $1.2 billion | | Equipment on operating leases | $301.0 million | $289.8 million | - Revenues from outsourced administrative services business were **$1.2 million** in Q3 2025, remaining relatively stable[39](index=39&type=chunk) [Wealth Management](index=12&type=section&id=Wealth%20Management) The Wealth Management segment experienced an increase in revenue in Q3 2025, with assets under administration reaching approximately $55.1 billion Wealth Management Metrics | Metric | Q3 2025 | | :-------------------------------- | :----------- | | Wealth management revenue | $37.2 million | | Assets under administration (Sep 30, 2025) | ~$55.1 billion | | Assets owned by Company and subsidiary banks | $8.8 billion (included in AUA) | - Wealth management revenue increased compared to Q2 2025[40](index=40&type=chunk) [Supplemental Financial Data](index=16&type=section&id=Supplemental%20Financial%20Data) [Consolidated Statements of Condition](index=16&type=section&id=Consolidated%20Statements%20of%20Condition) The consolidated statements of condition provide a detailed breakdown of Wintrust's assets, liabilities, and shareholders' equity over several quarters, illustrating the growth in total assets, loans, and deposits, and changes in equity components Consolidated Statements of Condition (in thousands) | (In thousands) | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | | :----------------------------------- | :----------- | :----------- | :----------- | :----------- | :----------- | | **Assets:** | | | | | | | Total assets | $69,629,638 | $68,983,318 | $65,870,066 | $64,879,668 | $63,788,424 | | Net loans | $51,676,860 | $50,650,025 | $48,330,183 | $47,691,020 | $46,707,168 | | Available-for-sale securities | $5,274,124 | $4,885,715 | $4,220,305 | $4,141,482 | $3,912,232 | | **Liabilities:** | | | | | | | Total deposits | $56,711,381 | $55,816,811 | $53,570,038 | $52,512,349 | $51,404,966 | | Non-interest-bearing deposits | $10,952,146 | $10,877,166 | $11,201,859 | $11,410,018 | $10,739,132 | | Interest-bearing deposits | $45,759,235 | $44,939,645 | $42,368,179 | $41,102,331 | $40,665,834 | | **Shareholders' Equity:** | | | | | | | Total shareholders' equity | $7,045,757 | $7,225,696 | $6,600,537 | $6,344,297 | $6,399,714 | | Preferred stock | $425,000 | $837,500 | $412,500 | $412,500 | $412,500 | | Retained earnings | $4,356,367 | $4,200,923 | $4,045,854 | $3,897,164 | $3,748,715 | [Consolidated Statements of Income](index=17&type=section&id=Consolidated%20Statements%20of%20Income) The consolidated statements of income detail Wintrust's revenue and expense components, showing growth in net interest income and non-interest income, leading to increased net income for both the quarter and year-to-date periods Consolidated Statements of Income (in thousands) | (Dollars in thousands) | Q3 2025 | Q2 2025 | Q3 2024 | 9M 2025 | 9M 2024 | | :----------------------------------- | :----------- | :----------- | :----------- | :----------- | :----------- | | Total interest income | $963,834 | $920,908 | $908,604 | $2,771,707 | $2,564,096 | | Total interest expense | $396,824 | $374,214 | $406,021 | $1,131,529 | $1,126,709 | | Net interest income | $567,010 | $546,694 | $502,583 | $1,640,178 | $1,437,387 | | Provision for credit losses | $21,768 | $22,234 | $22,334 | $67,965 | $84,068 | | Total non-interest income | $130,827 | $124,089 | $113,147 | $371,550 | $374,874 | | Total non-interest expense | $380,028 | $381,461 | $360,687 | $1,127,579 | $1,034,185 | | Income before taxes | $296,041 | $267,088 | $232,709 | $816,184 | $694,008 | | Income tax expense | $79,787 | $71,561 | $62,708 | $215,364 | $184,325 | | Net income | $216,254 | $195,527 | $170,001 | $600,820 | $509,683 | | Net income per common share - Diluted | $2.78 | $2.78 | $2.47 | $8.25 | $7.67 | [Loan Portfolio Mix and Growth Rates](index=18&type=section&id=Loan%20Portfolio%20Mix%20and%20Growth%20Rates) Wintrust's total loan portfolio grew significantly, with notable annualized increases in both core and niche loan segments, reflecting diversified growth across various categories Loan Portfolio Mix and Growth Rates (in thousands) | Loan Category | Sep 30, 2025 (in thousands) | % Growth from Jun 30, 2025 (annualized) | % Growth from Sep 30, 2024 | | :----------------------------------- | :-------------------------- | :-------------------------------------- | :------------------------- | | Total mortgage loans held-for-sale | $333,883 | 45% | (28)% | | Total core loans | $30,610,433 | 9% | 8% | | Commercial and industrial | $7,135,083 | 6% | 5% | | Leases | $2,834,563 | 11% | 16% | | Residential real estate loans for investment | $4,019,046 | 21% | 24% | | Total niche loans | $21,453,049 | 6% | 15% | | U.S. property & casualty insurance (Premium Finance) | $7,502,901 | 7% | 20% | | Life insurance (Premium Finance) | $8,758,553 | 12% | 10% | | Total loans, net of unearned income | $52,063,482 | 8% | 11% | [Deposit Portfolio Mix and Growth Rates](index=19&type=section&id=Deposit%20Portfolio%20Mix%20and%20Growth%20Rates) Total deposits grew by 6% annualized in Q3 2025, with money market accounts showing the strongest growth. The deposit mix remained relatively stable, with non-interest-bearing deposits comprising 19% of the total Deposit Portfolio Mix and Growth Rates (in thousands) | Deposit Category | Sep 30, 2025 (in thousands) | % Growth from Jun 30, 2025 (annualized) | % Growth from Sep 30, 2024 | Mix (Sep 30, 2025) | | :----------------------------------- | :-------------------------- | :-------------------------------------- | :------------------------- | :----------------- | | Non-interest-bearing | $10,952,146 | 3% | 2% | 19% | | NOW and interest bearing demand deposits | $6,710,919 | (5)% | 23% | 12% | | Wealth management deposits | $1,600,735 | 1% | 23% | 3% | | Money market | $20,270,382 | 14% | 14% | 36% | | Savings | $6,758,743 | 6% | 9% | 12% | | Time certificates of deposit | $10,418,456 | 3% | 4% | 18% | | Total deposits | $56,711,381 | 6% | 10% | 100% | [Interest Rate Sensitivity](index=24&type=section&id=Interest%20Rate%20Sensitivity) Wintrust actively manages its interest rate exposure, with the majority of its variable rate loan portfolio tied to SOFR and CMT indices. The company's net interest income sensitivity to rate changes has remained relatively neutral due to strategic actions like derivative instruments and originating longer-term fixed-rate loans Net Interest Income Sensitivity Analysis | Scenario | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | | :-------------------- | :----------- | :----------- | :----------- | :----------- | :----------- | | **Static Shock Scenario** | | | | | | | +200 Basis Points | (2.3)% | (1.5)% | (1.8)% | (1.6)% | 1.2% | | +100 Basis Points | (0.8)% | (0.4)% | (0.6)% | (0.6)% | 1.1% | | -100 Basis Points | 0.0% | (0.2)% | (0.2)% | (0.3)% | 0.4% | | -200 Basis Points | (0.4)% | (1.2)% | (1.2)% | (1.5)% | (0.9)% | | **Ramp Scenario** | | | | | | | +200 Basis Points | (0.2)% | 0.0% | 0.2% | (0.2)% | 1.6% | | +100 Basis Points | (0.1)% | 0.0% | 0.2% | (0.0)% | 1.2% | | -100 Basis Points | 0.1% | (0.1)% | (0.1)% | 0.0% | 0.7% | | -200 Basis Points | (0.1)% | (0.4)% | (0.5)% | (0.3)% | 0.5% | - The majority of the Company's variable rate loan portfolio (**$17.5 billion**) is tied to one-month SOFR and (**$7.3 billion**) to twelve-month CMT, which do not always mirror Prime rate changes[76](index=76&type=chunk) - Management has used derivative instruments (collars, floors, receive fixed swaps) and originated more longer-term fixed-rate loans to hedge variable rate loan exposures and reposition interest rate sensitivity[70](index=70&type=chunk) [Allowance for Credit Losses](index=27&type=section&id=Allowance%20for%20Credit%20Losses) The allowance for credit losses slightly decreased in Q3 2025, with a stable provision. Net charge-offs increased, primarily in the commercial segment, but overall allowance levels are considered appropriate by management Allowance for Credit Losses Trends (in thousands) | (Dollars in thousands) | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | | :----------------------------------- | :----------- | :----------- | :----------- | :----------- | :----------- | | Allowance for credit losses at period end | $454,586 | $457,461 | $448,387 | $437,060 | $436,193 | | Provision for credit losses | $21,768 | $22,234 | $23,963 | $16,979 | $22,334 | | Total charge-offs | $28,846 | $18,495 | $17,449 | $19,731 | $31,018 | | Total recoveries | $4,291 | $5,155 | $4,809 | $3,806 | $4,283 | | Net charge-offs | ($24,555) | ($13,340) | ($12,640) | ($15,925) | ($26,735) | | Annualized net charge-offs as % of total loans | 0.19% | 0.11% | 0.11% | 0.13% | 0.23% | | Allowance for loan losses as % of loans at period end | 0.74% | 0.77% | 0.78% | 0.76% | 0.77% | Allowance for Credit Losses by Loan Portfolio (Sep 30, 2025) | Allowance by Loan Portfolio (Sep 30, 2025) | Recorded Investment | Calculated Allowance | % of category's balance | | :----------------------------------- | :------------------ | :------------------- | :---------------------- | | Commercial | $16,544,342 | $189,476 | 1.15% | | Commercial real estate | $13,619,207 | $230,477 | 1.69% | | Total core loans | $30,610,433 | $408,780 | 1.34% | | Total niche loans | $21,453,049 | $45,411 | 0.21% | [Non-Performing Assets](index=30&type=section&id=Non-Performing%20Assets) Non-performing assets and loans improved in Q3 2025, with a decrease in both non-accrual loans and total non-performing loans. Other real estate owned (OREO) saw a slight increase Non-Performing Assets Trends (in thousands) | (Dollars in thousands) | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | | :----------------------------------- | :----------- | :----------- | :----------- | :----------- | :----------- | | Total non-performing loans | $162,632 | $188,838 | $172,390 | $170,823 | $179,687 | | Total non-performing assets | $187,464 | $212,453 | $195,015 | $193,939 | $193,369 | | Non-performing loans as % of total loans | 0.31% | 0.37% | 0.35% | 0.36% | 0.38% | | Non-performing assets as % of total assets | 0.27% | 0.31% | 0.30% | 0.30% | 0.30% | | Other real estate owned | $24,832 | $23,615 | $22,625 | $23,116 | $13,682 | | Allowance for loan losses and unfunded lending-related commitments losses as % of non-accrual loans | 303.67% | 262.71% | 296.25% | 282.33% | 270.53% | Non-Performing Loans Rollforward (QoQ) (in thousands) | Non-Performing Loans Rollforward (QoQ) | Sep 30, 2025 | Jun 30, 2025 | | :----------------------------------- | :----------- | :----------- | | Balance at beginning of period | $188,838 | $172,390 | | Additions from becoming non-performing | $34,805 | $48,651 | | Return to performing status | ($3,399) | ($6,896) | | Payments received | ($28,052) | ($5,602) | | Charge-offs, net | ($21,526) | ($11,734) | | Balance at end of period | $162,632 | $188,838 | [Mortgage Banking](index=34&type=section&id=Mortgage%20Banking) Mortgage banking revenue increased in Q3 2025, driven by higher production revenue and an improved production margin. Originations for sale and investment showed mixed trends, while loans serviced for others remained stable Mortgage Banking Performance (in thousands) | Metric | Q3 2025 | Q2 2025 | Change (QoQ) | | :----------------------------------- | :----------- | :----------- | :----------- | | Total mortgage banking revenue | $24,451 | $23,170 | +$1,281 | | Production revenue | $15,388 | $13,380 | +$2,008 | | Production margin | 1.95% | 2.07% | -0.12% | | Total originations for sale | $643,393 | $681,546 | -$38,153 | | Total originations for investment | $351,012 | $422,926 | -$71,914 | | Loans serviced for others | $12,524,131 | $12,470,924 | +$53,207 | | MSRs, at fair value | $190,938 | $193,061 | -$2,123 | Mortgage Banking Performance (Nine Months Ended, in thousands) | Metric (Nine Months Ended) | Sep 30, 2025 | Sep 30, 2024 | Change (YoY) | | :----------------------------------- | :----------- | :----------- | :----------- | | Total mortgage banking revenue | $68,150 | $72,761 | -$4,611 | | Production revenue | $38,709 | $41,538 | -$2,829 | | Total originations for sale | $1,785,392 | $1,964,576 | -$179,184 | | Total originations for investment | $991,115 | $663,561 | +$327,554 | [Non-GAAP Financial Measures/Ratios](index=37&type=section&id=Non-GAAP%20Financial%20Measures/Ratios) Wintrust provides several non-GAAP financial measures to offer a more meaningful view of its performance, including taxable-equivalent net interest income and margin, efficiency ratio, tangible common equity ratios, and pre-tax income excluding provision for credit losses. These reconciliations highlight adjustments for tax-exempt income and intangible assets - Non-GAAP measures are used by management to evaluate performance and include taxable-equivalent net interest income/margin, 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[94](index=94&type=chunk)[95](index=95&type=chunk) Non-GAAP Financial Metrics (in thousands) | Non-GAAP Metric | Q3 2025 | Q2 2025 | Q3 2024 | 9M 2025 | 9M 2024 | | :----------------------------------- | :----------- | :----------- | :----------- | :----------- | :----------- | | Net interest income (non-GAAP, FTE) | $569,839 | $549,574 | $505,727 | $1,648,786 | $1,446,207 | | Net interest margin (non-GAAP, FTE) | 3.50% | 3.54% | 3.51% | 3.53% | 3.54% | | Efficiency ratio (non-GAAP) | 54.47% | 56.68% | 58.58% | 56.00% | 56.80% | | Total tangible common shareholders' equity (non-GAAP) | $5,717,821 | $5,479,557 | $5,062,568 | - | - | | Tangible common equity ratio (non-GAAP) | 8.3% | 8.0% | 8.1% | - | - | | Tangible book value per common share (non-GAAP) | $85.39 | $81.86 | $76.15 | - | - | | Return on average tangible common equity (non-GAAP) | 13.74% | 14.44% | 13.92% | 14.28% | 14.69% | | Pre-tax income, excluding provision for credit losses (non-GAAP) | $317,809 | $289,322 | $255,043 | $884,149 | $778,076 | | Net income per common share - Diluted (non-GAAP, adjusted for non-recurring preferred stock impact) | $3.06 | $2.78 | $2.47 | $8.53 | $7.67 | [Company Information and Forward-Looking Statements](index=40&type=section&id=Company%20Information%20and%20Forward-Looking%20Statements) [Wintrust Subsidiaries](index=40&type=section&id=Wintrust%20Subsidiaries) Wintrust Financial Corporation operates as a financial holding company with 16 community bank subsidiaries and various non-bank businesses offering specialized financial services across multiple regions - Wintrust operates **16 community bank subsidiaries** in the greater Chicago, southern Wisconsin, west Michigan, northwest Indiana, and southwest Florida market areas[100](index=100&type=chunk) - Non-bank businesses include: - FIRST Insurance Funding and Wintrust Life Finance (commercial and life insurance loans) - First Insurance Funding of Canada (Canadian commercial insurance loans) - Tricom, Inc. (accounts receivable financing and outsourced administrative services for temporary staffing) - Wintrust Mortgage (residential mortgages origination and sale) - Wintrust Investments, LLC (private client and brokerage services) - Great Lakes Advisors LLC (money management and advisory services) - Wintrust Private Trust Company, N.A. (trust and investment services) - Wintrust Asset Finance (direct leasing) - CDEC (Qualified Intermediary services for tax-deferred like-kind exchanges)[102](index=102&type=chunk) [Forward-Looking Statements](index=40&type=section&id=Forward-Looking%20Statements) This section outlines various risks and uncertainties that could cause actual results to differ materially from forward-looking statements, covering economic conditions, credit quality, market volatility, competition, regulatory changes, and operational risks - Forward-looking statements are based on management's expectations and projections but involve risks and uncertainties that are difficult to predict[101](index=101&type=chunk) - Economic conditions (housing prices, job market, government shutdowns) and their impact on liquidity and loan portfolios - Extent of defaults and losses on the loan portfolio, requiring increases in allowance for credit losses - Changes in interest rates, capital markets, and other market indices affecting liquidity and asset/liability values - Competitive pressures in financial services affecting pricing and market share - Failure to identify and complete favorable acquisitions or unexpected losses from acquisitions - Security breaches, cyberattacks, and failures of information technology systems or third-party vendors - Legislative or regulatory changes, including heightened capital requirements and increased FDIC insurance premiums - Fluctuations in the stock market impacting wealth management and brokerage operations[103](index=103&type=chunk)[104](index=104&type=chunk)[107](index=107&type=chunk) [Conference Call, Webcast and Replay](index=42&type=section&id=Conference%20Call,%20Webcast%20and%20Replay) Details for accessing the conference call, webcast, and replay for Wintrust's Q3 and year-to-date 2025 earnings results are provided, including registration and website links - A conference call for Q3 and year-to-date 2025 earnings results will be held on Tuesday, October 21, 2025, at **10:00 a.m. (CDT)**[106](index=106&type=chunk) - Registration for the call and access to the audio-only webcast and replay, along with an accompanying slide presentation, are available on the Wintrust website (www.wintrust.com) under Investor Relations[106](index=106&type=chunk)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION 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 June 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 ________________________________ ...

FOR MORE INFORMATION CONTACT: Exhibit 99.1 Wintrust Financial Corporation 9700 W. Higgins Road, Suite 800, Rosemont, Illinois 60018 News Release FOR IMMEDIATE RELEASE July 21, 2025 David A. Dykstra, Vice Chairman & Chief Operating Officer (847) 939-9000 Amy Yuhn, Executive Vice President, Communications (847) 939-9591 Web site address: www.wintrust.com Wintrust Financial Corporation Reports Record Net Income ROSEMONT, ILLINOIS – Wintrust Financial Corporation ("Wintrust", "the Company", "we" or "our") (Nasd ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION 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 March 31, 2025 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ☐ For the transition period from to Indicate by check mark whether the registrant (1) has filed all ...

Exhibit 99.1 Wintrust Financial Corporation 9700 W. Higgins Road, Suite 800, Rosemont, Illinois 60018 News Release FOR IMMEDIATE RELEASE April 21, 2025 FOR MORE INFORMATION CONTACT: Timothy S. Crane, President & Chief Executive Officer David A. Dykstra, Vice Chairman & Chief Operating Officer (847) 939-9000 Web site address: www.wintrust.com Wintrust Financial Corporation Reports Record First Quarter 2025 Net Income ROSEMONT, ILLINOIS – Wintrust Financial Corporation ("Wintrust", "the Company", "we" or "our ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☑ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2024 ☐ 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 Corporation (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organi ...

9700 W. Higgins Road, Suite 800, Rosemont, Illinois 60018 News Release FOR IMMEDIATE RELEASE January 21, 2025 Exhibit 99.1 Wintrust Financial Corporation FOR MORE INFORMATION CONTACT: • Total loans increased by approximately $1.0 billion, or 8% annualized. • Total deposits increased by approximately $1.1 billion, or 9% annualized. • Total assets increased by $1.1 billion, or 7% annualized. • Net interest income increased to $525.1 million in the fourth quarter of 2024 compared to $502.6 million in the third ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION 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, 2024 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 ___________________________ ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION 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 June 30, 2024 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 ________________________________ ...