Exhibit 99.1

Wintrust Financial Corporation

727 North Bank Lane, Lake Forest, Illinois 60045

News Release

FOR IMMEDIATE RELEASE April 18, 2012

FOR MORE INFORMATION CONTACT:

Edward J. Wehmer, President & Chief Executive Officer

David A. Dykstra, Senior Executive Vice President & Chief Operating Officer

(847) 615-4096

Web site address: www.wintrust.com

WINTRUST FINANCIAL CORPORATION REPORTS FIRST QUARTER 2012 NET INCOME OF $23.2 MILLION,

AN INCREASE OF 42% FROM THE 2011 FIRST QUARTER AND 21% FROM THE 2011 FOURTH QUARTER, HIGHLIGHTED BY NET INTEREST MARGIN EXPANSION, CREDIT QUALITY IMPROVEMENT AND

OPERATING EXPENSE CONTROL

LAKE FOREST, ILLINOIS – Wintrust Financial Corporation (“Wintrust” or “the Company”) (Nasdaq WTFC) announced net income of $23.2 million or $0.50 per diluted common share for the first quarter of 2012 compared to net income of $19.2 million or $0.41 per diluted common share for the fourth quarter of 2011 and $16.4 million or $0.36 per diluted common share for the first quarter of 2011.

Highlights Compared with the 2011 Fourth Quarter:

• 3.55% net interest margin, up ten basis points

• 7% annualized growth in average total loans, excluding covered loans

• 5% decline in non-performing loans to 1.06% of total loans, excluding covered loans, down from 1.14%

• 42% decline in net charge-offs to an annualized 0.53% of average total loans, excluding covered loans, down from 0.93%

• Improvement in allowance for loan losses to 97.7% of total non-performing loans, excluding covered loans, up from 91.9%

• 3% increase in tangible common book value per share to $27.57, up from $26.72

• Increase in tangible common equity ratio, assuming conversion of preferred stock, to 8.6%, up from 7.8%

• 4 basis point decline in net overhead ratio to 1.58%, based on pre-tax adjusted earnings, down from 1.62%

• 62.31% efficiency ratio, based on pre-tax adjusted earnings, an improvement from 64.76%

• Completed two acquisitions and a convertible preferred stock issuance

• Debt defeasance of approximately one-third of the secured borrowings owed to securitization investors

• Debt defeasance costs in the first quarter of approximately $848,000 were effectively offset by $816,000 of net gains on available for sale securities

The Company’s total assets of $16.2 billion at March 31, 2012 increased $2.1 billion from March 31, 2011. Total deposits as of March 31, 2012 were $12.7 billion, an increase of $1.8 billion from March 31, 2011. Noninterest bearing deposits increased by $622 million or 49% since March 31, 2011, while NOW, wealth management, money market and savings deposits increased $1.2 billion or 24% during the same time period. Total time certificates of deposit remained essentially unchanged at March 31, 2012 compared to March 31, 2011. Total loans, including loans held for sale but excluding covered loans, were $11.1 billion as of March 31, 2012, an increase of $1.4 billion over March 31, 2011.

Edward J. Wehmer, President and Chief Executive Officer, commented, “Our reported first quarter net income of $23.2 million represents a 21% increase over the $19.2 million of net income reported in the fourth quarter of 2011 and a 42% increase over the $16.4 million of net income reported in the first quarter of 2011. The first quarter of 2012 was highlighted by continued solid loan growth, favorable shifting in the mix of the deposit funding base, improvement in net interest margin, credit quality and expense management. Other highlights included a successful convertible preferred stock issuance, franchise expansion and a favorable environment for both wealth management and mortgage banking revenue.”

Mr. Wehmer continued, “Total loans outstanding at March 31, 2012, including loans held for sale but excluding covered loans, increased $226 million from December 31, 2011. This growth was primarily comprised of $118 million of commercial and commercial real-estate and $100 million of commercial premium finance receivables. Loan growth funding was supported by continued growth in the deposit base, as total deposits increased $359 million since December 31, 2011. Our mix of deposits continued to improve as certificates of deposit at March 31, 2012 make up only 38% of total deposits, down from 40% at December 31, 2011 and 44% at March 31, 2011. Additionally, non-interest bearing demand deposits now comprise 15% of total deposits, up from 14% at December 31, 2011 and 12% at March 31, 2011.”

Mr. Wehmer further commented, “Net interest income increased in the first quarter by $1 million over the fourth quarter of 2011 and $16 million over the first quarter of 2011. The Company’s net interest margin improved to 3.55% for the first quarter of 2012, compared to 3.45% in the previous quarter and 3.48% in the first quarter of 2011. The growth in net interest income in the first quarter of 2012 contributed to an improvement in pre-tax adjusted earnings, one of our principal internal measurements of profitability. Also contributing to the improvement in pre-tax adjusted earnings were expense management and a solid quarter for both wealth management and mortgage banking revenue. Excluding the seasonal employment tax expense increase, costs related to other real estate owned, the collection of covered loans and debt defeasance, total non-interest expense decreased by $3.9 million or 3.5% from the fourth quarter of 2011. Wealth management revenue benefited from improved market conditions throughout the first quarter while our mortgage banking division continued to experience heavy demand as mortgage interest rates remained low.”

Commenting on credit quality, Mr. Wehmer noted, “The Company’s credit quality metrics improved during the quarter as non-performing loans as a percent of total loans decreased to 1.06%, down from 1.14% at December 31, 2011 and 1.63% at March 31, 2011. Total non-performing loans decreased to $114 million at March 31, 2012,

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down from $120 million at December 31, 2011 and down from $155 million at March 31, 2011. Non-performing loan inflows during the first quarter of 2012 declined to $18 million, the lowest amount in the past nine quarters and down from $25 million in the fourth quarter of 2011 and $56 million in the first quarter of 2011. Total allowance for loan losses as a percentage of non-performing loans rose to 98% at March 31, 2012, up from 92% at December 31, 2011 and 74% at March 31, 2011, the highest level since September 30, 2007. Total non-performing assets, which includes other real estate owned, declined to $190 million, down from $207 million at December 31, 2011 and $241 million at March 31, 2011. During the first quarter of 2012, excluding the provision for covered loan losses, the Company recorded a provision for loan losses of $15 million, net charge-offs of $14 million and other real-estate owned operating charges of $7 million.”

Turning to franchise expansion, Mr. Wehmer noted, “During the first quarter of 2012 we completed and announced four separate transactions that we believe will have a positive impact on our franchise. We announced plans to expand our premium finance business into the Canadian marketplace by entering into an agreement to acquire Macquarie Premium Funding Inc. We expect this transaction to close in the second quarter of 2012 and add approximately $230 million of outstanding receivables to the Company’s balance sheet. We completed our seventh FDIC-assisted transaction in February, acquiring the banking operations of Charter National Bank and Trust, adding two new locations. As part of two separate agreements with Suburban Bank and Trust, in late March, we completed the acquisition of their trust business, and in early April, completed the acquisition of their Orland Park, Illinois banking location. These two transactions added $160 million in assets under administration, additional land trust accounts and approximately $52 million in deposits and $3 million in performing loans. We also filed an application with Illinois banking regulators to open a retail banking office at 70 W. Madison St. in downtown Chicago. If approved, this location would be our first-ever downtown Chicago retail branch.”

In closing, Mr. Wehmer added, “We are pleased with the results of the first quarter and believe we are well positioned to continue the growth in earnings and the growth in the franchise value. Strong earning asset growth at the end of the first quarter should bode well for higher average earning assets and net interest income in the second quarter of the year. Additionally, our loan pipelines remain strong and we are optimistic about our ability to execute on closing a substantial portion of the existing pipeline. We also expect to close on the acquisition of the previously announced pending acquisition of the Canadian insurance premium finance company in the second quarter which should further boost our earning assets and net income potential. We will continue to be disciplined in our approach

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to growth but we believe we are back to an asset driven mode of operation which should allow us to be more aggressive in growing deposits in our markets and increasing the franchise value of our Company.”

The graphs below depict changes in the level of non-performing loans, excluding covered loans (“NPLs”), over the last five quarters. The following metrics, for the last five quarters, are diagrammed below: total non-performing loans, non-performing loans as a percent of total loans, non-performing loan inflows and allowance for loan losses (“ALL”) as a percent of total non-performing loans.

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The graph below displays the trend of period-end and quarterly average balances of total earning assets and trade date securities receivables. During the quarter ended March 31, 2012, average total earning assets and trade date securities receivables were lower than period-end balances as the Company experienced most of the increase in the period-end balance near the end of the quarter. Average earning assets and trade date securities receivables in the second quarter of 2012 are expected to be positively impacted based on the higher beginning balances at the start of the quarter.

Total Earning Assets and Trade Date Securities Receivable (Dollars in billions)

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Wintrust’s key operating measures and growth rates for the first quarter of 2012, as compared to the sequential and linked quarters are shown in the table below:

	Three Months Ended									% or (4) basis point (bp) change from			% or basis point (bp) change from
	March 31, 2012			December 31, 2011			March 31, 2011			4th Quarter 2011			1st Quarter 2011
Net income	$	23,210		$	19,221		$	16,402			21	%		42	%
Net income per common share – diluted	$	0.50		$	0.41		$	0.36			22	%		39	%
Pre-tax adjusted earnings (2)	$	63,688		$	59,362		$	51,032			7	%		25	%
Net revenue (1)	$	172,918		$	169,559		$	150,501			2	%		15	%
Net interest income	$	125,895		$	124,647		$	109,614			1	%		15	%
Net interest margin (2)		3.55	%		3.45	%		3.48	%		10	bp		7	bp
Net overhead ratio (2) (3)		1.80	%		1.83	%		1.66	%		(3)	bp		14	bp
Net overhead ratio, based on pre-tax adjusted earnings (2) (3)		1.58	%		1.62	%		1.69	%		(4)	bp		(11)	bp
Return on average assets		0.59	%		0.48	%		0.47	%		11	bp		12	bp
Return on average common equity		5.90	%		4.87	%		4.49	%		103	bp		141	bp
At end of period
Total assets	$	16,172,018		$	15,893,808		$	14,094,294			7	%		15	%
Total loans, excluding loans held-for-sale, excluding covered loans	$	10,717,384		$	10,521,377		$	9,561,802			7	%		12	%
Total loans, including loans held-for-sale, excluding covered loans	$	11,067,712		$	10,841,901		$	9,656,288			8	%		15	%
Total deposits	$	12,665,853		$	12,307,267		$	10,915,169			12	%		16	%
Total shareholders’ equity	$	1,687,921		$	1,543,533		$	1,453,253			38	%		16	%

⁽¹⁾ Net revenue is net interest income plus non-interest income.

⁽²⁾  See “Supplemental Financial Measures/Ratios” for additional information on this performance measure/ratio.

⁽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 average total assets. A lower ratio indicates a higher degree of efficiency.

⁽⁴⁾  Period-end balance sheet percentage changes are annualized.

Certain returns, yields, performance ratios, or quarterly growth rates are “annualized” in this presentation to represent an annual time period. This is done for analytical purposes to better discern for decision-making purposes underlying performance trends when compared to full-year or year-over-year amounts. For example, a 5% growth rate for a quarter would represent an annualized 20% growth rate. Additional supplemental financial information showing quarterly trends can be found on the Company’s web site at www.wintrust.com by choosing “Financial Reports” under the “Investor Relations” heading, and then choosing “Supplemental Financial Info.”

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Items Impacting Comparative Financial Results: Acquisitions and Capital

Acquisitions – Completed Acquisitions

On March 30, 2012, the Company’s wholly-owned subsidiary, The Chicago Trust Company, N.A. (“CTC”), completed its previously announced acquisition of the trust operations of Suburban Bank & Trust Company (“Suburban”). Through this transaction, CTC acquired trust accounts having assets under administration of approximately $160 million, in addition to land trust accounts and various other assets. The Company recorded goodwill of $1.8 million on the acquisition.

On February 10, 2012, the Company announced that its wholly-owned subsidiary bank, Barrington Bank and Trust Company, N.A. (“Barrington”), acquired certain assets and liabilities and the banking operations of Charter National Bank and Trust (“Charter National”) in an FDIC-assisted transaction. Charter National operated two locations: one in Hoffman Estates and one in Hanover Park.

On September 30, 2011, the Company completed its acquisition of Elgin State Bancorp, Inc. (“ESBI”). ESBI was the parent company of Elgin State Bank, which operated three banking locations in Elgin, Illinois. As part of the transaction, Elgin State Bank merged into the Company’s wholly-owned subsidiary bank, St. Charles Bank & Trust Company (“St. Charles”), and the three acquired banking locations are operating as branches of St. Charles under the brand name Elgin State Bank. Elgin State Bank had approximately $262 million in assets and $240 million in deposits as of the acquisition date, prior to purchase accounting adjustments. The Company recorded goodwill of approximately $5.0 million on the acquisition.

On July 8, 2011, the Company announced that its wholly-owned subsidiary bank, Northbrook Bank & Trust Company (“Northbrook”), acquired certain assets and liabilities and the banking operations of First Chicago Bank & Trust (“First Chicago”) in an FDIC-assisted transaction. First Chicago operated seven locations in Illinois: three in Chicago and one each in Bloomingdale, Itasca, Norridge and Park Ridge.

On July 1, 2011, the Company completed its acquisition of Great Lakes Advisors, Inc. (“Great Lakes Advisors”), a Chicago-based investment manager with approximately $2.4 billion in assets under management. The Company recorded goodwill of $15.7 million on the acquisition. Great Lakes Advisors merged with Wintrust’s existing asset management business, Wintrust Capital Management, LLC and operates as “Great Lakes Advisors, LLC, a Wintrust Wealth Management Company”.

On April 13, 2011, the Company announced the acquisition of certain assets and the assumption of certain liabilities of the mortgage banking business of River City Mortgage, LLC (“River City”) of Bloomington,

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Minnesota. With offices in Minnesota, Nebraska and North Dakota, River City originated nearly $500 million in mortgage loans in 2010.

On March 25, 2011, the Company announced that its wholly-owned subsidiary bank, Advantage National Bank Group (“Advantage”) acquired certain assets and liabilities and the banking operations of The Bank of Commerce (“TBOC”) in an FDIC-assisted transaction. TBOC operated one location in Wood Dale, Illinois. Advantage subsequently changed its name to Schaumburg Bank and Trust Company, N.A. (“Schaumburg”).

On February 4, 2011, the Company announced that its wholly-owned subsidiary bank, Northbrook, acquired certain assets and liabilities and the banking operations of Community First Bank-Chicago (“CFBC”) in an FDIC-assisted transaction. CFBC operated one location in Chicago, Illinois.

On February 3, 2011, the Company announced the acquisition of certain assets and the assumption of certain liabilities of the mortgage banking business of Woodfield Planning Corporation (“Woodfield”) of Rolling Meadows, Illinois. With offices in Rolling Meadows, Illinois and Crystal Lake, Illinois, Woodfield originated approximately $180 million in mortgage loans in 2010.

Summary of FDIC-assisted Transactions

• Barrington assumed approximately $89 million of the outstanding deposits and approximately $94 million of assets of Charter National on February 10, 2012, prior to purchase accounting adjustments. A bargain purchase gain of $840,000 was recognized on this transaction.

• Northbrook assumed approximately $887 million of the outstanding deposits and approximately $959 million of assets of First Chicago on July 8, 2011, prior to purchase accounting adjustments. A bargain purchase gain of $27.4 million was recognized on this transaction.

• Schaumburg assumed approximately $161 million of the outstanding deposits and approximately $163 million of assets of TBOC on March 25, 2011, prior to purchase accounting adjustments. A bargain purchase gain of $8.6 million was recognized on this transaction.

• Northbrook assumed approximately $50 million of the outstanding deposits and approximately $51 million of assets of CFBC on February 4, 2011, prior to purchase accounting adjustments. A bargain purchase gain of $2.0 million was recognized on this transaction.

Loans comprise the majority of the assets acquired in the FDIC-assisted transactions and are subject to loss sharing agreements with the FDIC where the FDIC has agreed to reimburse the Company for 80% of losses incurred on the purchased loans. Additionally, the loss share agreements with the FDIC require the Company to reimburse

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the FDIC in the event that actual losses on covered assets are lower than the original loss estimates agreed upon with the FDIC with respect to such assets in the loss share agreements. We refer to the loans subject to these loss-sharing agreements as “covered loans.” We use the term “covered assets” to refer to the total of covered loans, covered OREO and certain other covered assets. The agreements with the FDIC require that the Company follow certain servicing procedures or risk losing FDIC reimbursement of losses related to covered assets.

Acquisitions – Announced Acquisitions

On February 14, 2012, the Company announced plans to expand its premium finance business into the Canadian marketplace by entering into an agreement, through its wholly-owned subsidiary Lake Forest Bank and Trust Company, to purchase Macquarie Premium Funding Inc., the Canadian insurance premium funding unit of Macquarie Group. The business to be acquired had approximately $230 million of premium finance receivables outstanding as of December 31, 2011. The transaction is expected to be completed in the second quarter of 2012, subject to regulatory approval and certain closing conditions.

On January 13, 2012, the Company’s wholly-owned subsidiary bank, Old Plank Trail Community Bank, N.A. (“Old Plank Trail Bank”), entered into a definitive agreement to acquire a branch of Suburban that is located in Orland Park, Illinois. Through this transaction, subject to final adjustments, Old Plank Trail Bank acquired approximately $52 million of deposits, approximately $3 million of performing loans, the property, bank facility and various other assets on April 13, 2012.

Stock Offerings

On March 14, 2012, the Company announced the pricing of 110,000 shares, or $110,000,000 aggregate liquidation preference, of Non-Cumulative Perpetual Convertible Preferred Stock, Series C (“Preferred Stock”). On March 15, 2012, the Company’s underwriters exercised their option to purchase 16,500, or $16,500,000 aggregate liquidation preference, of Preferred Stock. After giving effect to the exercise of the overallotment option, the underwriters purchased an aggregate of 126,500 shares or $126,500,000 aggregate liquidation preference, of Preferred Stock in the offering.

Wintrust intends to use the net proceeds for general corporate purposes, which may include, without limitation, investments at the holding company level, providing capital to support our growth, acquisitions or other business combinations, including FDIC-assisted acquisitions, and reducing or refinancing existing debt.

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Dividends will be payable on the Preferred Stock when, as, and if, declared by Wintrust’s Board of Directors on a non-cumulative basis quarterly in arrears on January 15, April 15, July 15 and October 15 of each year, beginning on April 15, 2012 at a rate of 5.00% per year on the liquidation preference of $1,000 per share.

The holders of the Preferred Stock will have the right at any time to convert each share of Preferred Stock into 24.3132 shares of the Wintrust common stock, which represents an initial conversion price of $41.13 per share of Wintrust common stock, plus cash in lieu of fractional shares. The initial conversion price represents a 17.5% conversion premium to the volume-weighted average price of Wintrust common stock on March 13, 2012 of approximately $35.00 per share. The conversion rate, and thus the conversion price, will be subject to adjustment under certain circumstances. On or after April 15, 2017, Wintrust will have the right under certain circumstances to cause the Preferred Stock to be converted into shares of Wintrust common stock, plus cash in lieu of fractional shares.

Capital Ratios

As of March 31, 2012, the Company’s estimated capital ratios were 14.2% for total risk-based capital, 13.0% for tier 1 risk-based capital and 10.5% for leverage, above the well capitalized guidelines. Additionally, the Company’s tangible common equity ratio was 7.5% at March 31, 2012. Assuming conversion of preferred stock, the tangible common equity ratio was 8.6% at March 31, 2012.

Financial Performance Overview – First Quarter 2012

For the first quarter of 2012, net interest income totaled $125.9 million, an increase of $1.2 million as compared to the fourth quarter of 2011 and $16.3 million as compared to the first quarter of 2011. The increases in net interest income on both a sequential and linked quarter basis are the result of:

• The change in deposit mix, growth of higher yielding loans and a decrease in liquidity management assets, positively impacted net interest income in the first quarter of 2012 as compared to the first quarter of 2011. During the first quarter of 2012, the Company repurchased $172 million of the $600 million outstanding Class A notes issued in the third quarter of 2009 as part of its loan securitization. This defeasance of debt effectively reduced the outstanding “secured borrowings – owed to securitization investors” shown on the Company’s balance sheet by $85.1 million, based on average balance, in the first quarter of 2012. Additionally, growth in average loans was due to a $95.7 million increase in commercial and commercial real estate loans and a $94.7 million increase in life insurance and commercial premium finance loans.

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• Average earning assets for the first quarter of 2012 increased by $1.5 billion compared to the first quarter of 2011. Average earning asset growth over the past 12 months was primarily a result of the $998.7 million increase in average loans, $340.7 million of average covered loan growth from the FDIC-assisted bank acquisitions and a $127.6 million increase in average liquidity management and other earning assets. The $998.7 million increase in average loans was, in turn, comprised of a $430.9 million increase in commercial loans, a $179.7 million increase in commercial real estate loans, a $147.4 million increase in life insurance premium finance loans and a $145.1 million increase in commercial insurance premium finance loans, an increase in mortgage warehouse lending of $62.1 million and an increase in mortgages held for sale of $48.3 million, partially offset by a net decrease in all other loans of $14.8 million. The decrease in all other loans was primarily related to home equity loans. The shift in growth over the past 12 months toward commercial and industrial loans is a reflection of the commercial initiatives the Company has implemented. The average earning asset growth of $1.5 billion over the past 12 months was primarily funded by a $939.2 million increase in the average balances of interest-bearing deposits, an increase in the average balance of net free funds of $334.1 million and an increase in wholesale funding of $193.7 million.

The net interest margin for the first quarter of 2012 was 3.55% compared to 3.45% in the fourth quarter of 2011 and 3.48% in the first quarter of 2011. The changes in net interest margin on both a linked and sequential quarter basis are the result of:

• The ten basis point increase in net interest margin in the first quarter of 2012 compared to the fourth quarter of 2011 resulted from positive re-pricing of retail interest-bearing deposits along with a more favorable deposit mix, higher yields on our premium finance loans and the positive impact from the debt defeasance.

• The seven basis point increase in the first quarter of 2012 compared to the first quarter of 2011 was primarily attributable to a 33 basis point decline in the cost of interest-bearing deposits and an 80 basis point decline in the cost of wholesale borrowings over the last 12 months. Offsetting this was the negative impact of both competitive and economic pricing pressures on the commercial and industrial and commercial premium finance portfolios during the past 12 months and a decrease in accretable discount recognized as interest income on the purchased life insurance premium portfolio as prepayments declined, causing the yield on total loans to decline by 57 basis points.

Non-interest income totaled $47.0 million in the first quarter of 2012, increasing $2.1 million, or 5%, compared to the fourth quarter of 2011 and increasing $6.1 million, or 15%, compared to the first quarter of 2011.

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The increase in the first quarter of 2012 compared to the fourth quarter of 2011 is primarily attributable to higher wealth management revenues, bargain purchase gains recorded during the first quarter of 2012 as a result of the Charter National FDIC-assisted transaction and higher swap fee revenue, partially offset by lower fees from covered call options. The increase in the first quarter of 2012 compared to the first quarter of 2011 was primarily attributable to higher mortgage banking revenues, wealth management revenues and swap fee revenues, partially offset by a decrease in bargain purchase gains. Mortgage banking revenue increased $510,000 when compared to the fourth quarter of 2011 and increased $6.9 million when compared to the first quarter of 2011. The increase in the current quarter as compared to the first quarter of 2011 resulted primarily from an increase in gains on sales of loans, which was driven by higher origination volumes in the current quarter due to a favorable mortgage interest rate environment. Loans sold to the secondary market were $714.7 million in the first quarter of 2012 compared to $883.0 million in the fourth quarter of 2011 and $562.1 million in the first quarter of 2011 (see “Non-Interest Income” section later in this document for further detail).

Non-interest expense totaled $117.8 million in the first quarter of 2012, decreasing $1.0 million compared to the fourth quarter of 2011 and increasing $19.6 million, or 20%, compared to the first quarter of 2011. The increase compared to the first quarter of 2011 was primarily attributable to a $12.9 million increase in salaries and employee benefits. Salaries and employee benefits expense increased primarily as a result of a $4.8 million increase in salaries caused by the addition of employees from the various acquisitions and larger staffing as the Company grows, a $6.1 million increase in bonus and commissions primarily attributable to the increase in variable pay based revenue and the Company’s long-term incentive program approved by the Compensation Committee of the Board of Directors in August 2011 and a $2.0 million increase from employee benefits (primarily health plan and payroll taxes related). In addition, the Company incurred debt defeasance costs of approximately $848,000 in the first quarter of 2012.

Financial Performance Overview – Credit Quality

Non-performing loans, excluding covered loans, totaled $113.6 million, or 1.06% of total loans, at March 31, 2012, compared to $120.1 million, or 1.14% of total loans, at December 31, 2011 and $155.4 million, or 1.63% of total loans, at March 31, 2011. OREO, excluding covered OREO, of $76.2 million at March 31, 2012, decreased $10.3 million compared to $86.5 million at December 31, 2011 and decreased $9.1 million compared to $85.3 million at March 31, 2011.

The provision for credit losses, excluding the provision for covered loan losses, totaled $15.2 million for the first quarter of 2012 compared to $16.6 million for the fourth quarter of 2011 and $24.4 million in the first quarter of

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2011. Net charge-offs as a percentage of loans, excluding covered loans, for the first quarter of 2012 totaled 53 basis points on an annualized basis compared to 93 basis points on an annualized basis in the fourth quarter of 2011 and 104 basis points on an annualized basis in the first quarter of 2011.

Excluding the allowance for covered loan losses, the allowance for credit losses at March 31, 2012 totaled $124.1 million, or 1.16% of total loans, compared to $123.6 million, or 1.17% of total loans, at December 31, 2011 and $117.1 million, or 1.22% of total loans, at March 31, 2011.

The lower level of provision for credit losses, reflects the improvements in credit quality metrics for the first quarter of 2012. The graphs on pages four and five highlight the level of total non-performing loans, the improvement seen in the reduced levels of inflows to non-performing loans and the improvement in the allowance for loan loss coverage of non-performing loans.

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WINTRUST FINANCIAL CORPORATION

Selected Financial Highlights

	Three Months Ended March 31,
	2012			2011
Selected Financial Condition Data (at end of period):
Total assets	$	16,172,018		$	14,094,294
Total loans, excluding covered loans		10,717,384			9,561,802
Total deposits		12,665,853			10,915,169
Junior subordinated debentures		249,493			249,493
Total shareholders’ equity		1,687,921			1,453,253
Selected Statements of Income Data:
Net interest income	$	125,895		$	109,614
Net revenue (1)		172,918			150,501
Pre-tax adjusted earnings (2)		63,688			51,032
Net income		23,210			16,402
Net income per common share – Basic	$	0.61		$	0.44
Net income per common share – Diluted	$	0.50		$	0.36
Selected Financial Ratios and Other Data:
Performance Ratios:
Net interest margin (2)		3.55	%		3.48	%
Non-interest income to average assets		1.19	%		1.18	%
Non-interest expense to average assets		2.99	%		2.84	%
Net overhead ratio (2)(3)		1.80	%		1.66	%
Net overhead ratio, based on pre-tax adjusted earnings (2) (3)		1.58	%		1.69	%
Efficiency ratio (2) (4)		68.24	%		65.05	%
Efficiency ratio, based on pre-tax adjusted earnings (2) (4)		62.31	%		63.56	%
Return on average assets		0.59	%		0.47	%
Return on average common equity		5.90	%		4.49	%
Average total assets	$	15,835,350		$	14,018,525
Average total shareholders’ equity		1,564,662			1,437,869
Average loans to average deposits ratio (excluding covered loans)		88.1	%		91.2	%
Average loans to average deposits ratio (including covered loans)		93.5	%		94.2	%
Common Share Data at end of period:
Market price per common share	$	35.79		$	36.75
Book value per common share (2)	$	35.25		$	33.70
Tangible common book value per share (2)	$	27.57		$	26.65
Common shares outstanding		36,289,380			34,947,251
Other Data at end of period:(8)
Leverage Ratio (5)		10.5	%		10.3	%
Tier 1 capital to risk-weighted assets (5)		13.0	%		12.7	%
Total capital to risk-weighted assets (5)		14.2	%		14.1	%
Tangible common equity ratio (TCE) (2)(7)		7.5	%		8.0	%
Tangible common equity ratio, assuming full conversion of preferred stock (2) (7)		8.6	%		8.4	%
Allowance for credit losses (6)	$	124,101		$	117,067
Non-performing loans	$	113,621		$	155,387
Allowance for credit losses to total loans (6)		1.16	%		1.22	%
Non-performing loans to total loans		1.06	%		1.63	%
Number of:
Bank subsidiaries		15			15
Non-bank subsidiaries		7			8
Banking offices		98			88

⁽¹⁾  Net revenue includes net interest income and non-interest income

⁽²⁾  See “Supplemental Financial Measures/Ratios” for additional information on this performance measure/ratio.

⁽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.

⁽⁴⁾ The efficiency ratio is calculated by dividing total non-interest expense by tax-equivalent net revenue (less securities gains or losses). A lower ratio indicates more efficient revenue generation.

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

⁽⁶⁾  The allowance for credit losses includes both the allowance for loan losses and the allowance for unfunded lending-related commitments, but excludes the allowance for covered loan losses.

⁽⁷⁾  Total shareholders’ equity minus preferred stock and total intangible assets divided by total assets minus total intangible assets.

⁽⁸⁾  Asset quality ratios exclude covered loans.

14

WINTRUST FINANCIAL CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CONDITION

(In thousands)	(Unaudited) March 31, 2012			December 31, 2011			(Unaudited) March 31, 2011
Assets
Cash and due from banks	$	146,014		$	148,012		$	140,919
Federal funds sold and securities purchased under resale agreements		14,588			21,692			33,575
Interest-bearing deposits with other banks		900,755			749,287			946,193
Available-for-sale securities, at fair value		1,869,344			1,291,797			1,710,321
Trading account securities		1,140			2,490			2,229
Federal Home Loan Bank and Federal Reserve Bank stock, at cost		88,216			100,434			85,144
Brokerage customer receivables		31,085			27,925			25,361
Mortgage loans held-for-sale, at fair value		339,600			306,838			92,151
Mortgage loans held-for-sale, at lower of cost or market		10,728			13,686			2,335
Loans, net of unearned income, excluding covered loans		10,717,384			10,521,377			9,561,802
Covered loans		691,220			651,368			431,299
Total loans		11,408,604			11,172,745			9,993,101
Less: Allowance for loan losses		111,023			110,381			115,049
Less: Allowance for covered loan losses		17,735			12,977			4,844
Net loans		11,279,846			11,049,387			9,873,208
Premises and equipment, net		434,700			431,512			369,785
FDIC indemnification asset		263,212			344,251			124,785
Accrued interest receivable and other assets		463,394			444,912			394,292
Trade date securities receivable		—			634,047			—
Goodwill		307,295			305,468			281,940
Other intangible assets		22,101			22,070			12,056
Total assets	$	16,172,018		$	15,893,808		$	14,094,294
Liabilities and Shareholders’ Equity
Deposits:
Non-interest bearing	$	1,901,753		$	1,785,433			1,279,256
Interest bearing		10,764,100			10,521,834			9,635,913
Total deposits		12,665,853			12,307,267			10,915,169
Notes payable		52,639			52,822			1,000
Federal Home Loan Bank advances		466,391			474,481			423,500
Other borrowings		411,037			443,753			250,032
Secured borrowings - owed to securitization investors		428,000			600,000			600,000
Subordinated notes		35,000			35,000			50,000
Junior subordinated debentures		249,493			249,493			249,493
Trade date securities payable		—			47			10,000
Accrued interest payable and other liabilities		175,684			187,412			141,847
Total liabilities		14,484,097			14,350,275			12,641,041
Shareholders’ Equity:
Preferred stock		176,302			49,768			49,672
Common stock		36,522			35,982			34,947
Surplus		1,008,326			1,001,316			967,587
Treasury stock		(6,559	)		(112	)		(74	)
Retained earnings		478,160			459,457			404,580
Accumulated other comprehensive loss		(4,830	)		(2,878	)		(3,459	)
Total shareholders’ equity		1,687,921			1,543,533			1,453,253
Total liabilities and shareholders’ equity	$	16,172,018		$	15,893,808		$	14,094,294

15

WINTRUST FINANCIAL CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

	Three Months Ended March 31,
(In thousands, except per share data)	2012		2011
Interest income
Interest and fees on loans	$	143,555	$	136,543
Interest bearing deposits with banks		248		936
Federal funds sold and securities purchased under resale agreements		12		32
Securities		11,847		9,540
Trading account securities		9		13
Federal Home Loan Bank and Federal Reserve Bank stock		604		550
Brokerage customer receivables		211		166
Total interest income		156,486		147,780
Interest expense
Interest on deposits		18,030		23,956
Interest on Federal Home Loan Bank advances		3,584		3,958
Interest on notes payable and other borrowings		3,102		2,630
Interest on secured borrowings - owed to securitization investors		2,549		3,040
Interest on subordinated notes		169		212
Interest on junior subordinated debentures		3,157		4,370
Total interest expense		30,591		38,166
Net interest income		125,895		109,614
Provision for credit losses		17,400		25,344
Net interest income after provision for credit losses		108,495		84,270
Non-interest income
Wealth management		12,401		10,236
Mortgage banking		18,534		11,631
Service charges on deposit accounts		4,208		3,311
Gains on available-for-sale securities, net		816		106
Gain on bargain purchases		840		9,838
Trading gains (losses)		146		(440	)
Other		10,078		6,205
Total non-interest income		47,023		40,887
Non-interest expense
Salaries and employee benefits		69,030		56,099
Equipment		5,400		4,264
Occupancy, net		8,062		6,505
Data processing		3,618		3,523
Advertising and marketing		2,006		1,614
Professional fees		3,604		3,546
Amortization of other intangible assets		1,049		689
FDIC insurance		3,357		4,518
OREO expenses, net		7,178		5,808
Other		14,455		11,543
Total non-interest expense		117,759		98,109
Income before taxes		37,759		27,048
Income tax expense		14,549		10,646
Net income	$	23,210	$	16,402
Preferred stock dividends and discount accretion	$	1,246	$	1,031
Net income applicable to common shares	$	21,964	$	15,371
Net income per common share - Basic	$	0.61	$	0.44
Net income per common share - Diluted	$	0.50	$	0.36
Cash dividends declared per common share	$	0.09	$	0.09
Weighted average common shares outstanding		36,207		34,928
Dilutive potential common shares		7,530		7,794
Average common shares and dilutive common shares		43,737		42,722

16

SUPPLEMENTAL 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), net interest margin (including its individual components), the efficiency ratio, tangible common equity ratio, tangible common book value per share and pre-tax adjusted earnings. Management believes that these measures and ratios provide users of the Company’s financial information a more meaningful view of the performance of the 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. 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. Pre-tax adjusted earnings is a significant metric in assessing the Company’s operating performance. Pre-tax adjusted earnings is calculated by adjusting income before taxes to exclude the provision for credit losses and certain significant items.

The net overhead ratio and the efficiency ratio are primarily reviewed by the Company based on pre-tax adjusted earnings. The Company believes that these measures provide a more meaningful view of the Company’s operating efficiency and expense management. The net overhead ratio, based on pre-tax adjusted earnings, is calculated by netting total adjusted non-interest expense and total adjusted non-interest income, annualizing this amount, and dividing it by total average assets. Adjusted non-interest expense is calculated by subtracting OREO expenses, covered loan collection expense, defeasance cost and seasonal payroll tax fluctuation. Adjusted non-interest income is calculated by adding back the recourse obligation on loans previously sold and subtracting gains on investment partnerships, gain on bargain purchases, trading gains and gains on available-for-sale securities.

The efficiency ratio, based on pre-tax adjusted earnings, is calculated by dividing adjusted non-interest expense by adjusted taxable-equivalent net revenue. Adjusted taxable-equivalent net revenue is comprised of fully taxable equivalent net interest income and adjusted non-interest income.

17

The following table presents 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 for the last 5 quarters:

	Three Months Ended
	March 31,			December 31,			September 30,			June 30,			March 31,
(Dollars and shares in thousands)	2012			2011			2011			2011			2011
Calculation of Net Interest Margin and Efficiency Ratio
(A) Interest Income (GAAP)	$	156,486		$	157,617		$	154,951		$	145,445		$	147,780
Taxable-equivalent adjustment:
- Loans		134			132			100			110			116
- Liquidity management assets		329			320			313			296			295
- Other earning assets		3			2			6			2			3
Interest Income - FTE	$	156,952		$	158,071		$	155,370		$	145,853		$	148,194
(B) Interest Expense (GAAP)		30,591			32,970			36,541			36,739			38,166
Net interest income - FTE	$	126,361		$	125,101		$	118,829		$	109,114		$	110,028
(C) Net Interest Income (GAAP) (A minus B)	$	125,895		$	124,647		$	118,410		$	108,706		$	109,614
(D) Net interest margin (GAAP)		3.54	%		3.44	%		3.36	%		3.38	%		3.46	%
Net interest margin - FTE		3.55	%		3.45	%		3.37	%		3.40	%		3.48	%
(E) Efficiency ratio (GAAP)		68.42	%		70.17	%		57.34	%		67.41	%		65.23	%
Efficiency ratio - FTE		68.24	%		69.99	%		57.21	%		67.22	%		65.05	%
Efficiency ratio - Based on pre-tax adjusted earnings		62.31	%		64.76	%		63.69	%		62.81	%		63.56	%
(F) Net Overhead Ratio (GAAP)		1.80	%		1.83	%		1.00	%		1.72	%		1.66	%
Net Overhead ratio - Based on pre-tax adjusted earnings		1.58	%		1.62	%		1.56	%		1.59	%		1.69	%
Calculation of Tangible Common Equity ratio (at period end)
Total shareholders’ equity	$	1,687,921		$	1,543,533		$	1,528,187		$	1,473,386		$	1,453,253
(G) Less: Preferred stock		(176,302	)		(49,768	)		(49,736	)		(49,704	)		(49,672	)
Less: Intangible assets		(329,396	)		(327,538	)		(324,782	)		(294,833	)		(293,996	)
(H) Total tangible common shareholders’ equity	$	1,182,223		$	1,166,227		$	1,153,669		$	1,128,849		$	1,109,585
Total assets	$	16,172,018		$	15,893,808		$	15,914,804		$	14,615,897		$	14,094,294
Less: Intangible assets		(329,396	)		(327,538	)		(324,782	)		(294,833	)		(293,996	)
(I) Total tangible assets	$	15,842,622		$	15,566,270		$	15,590,022		$	14,321,064		$	13,800,298
Tangible common equity ratio (H/I)		7.5	%		7.5	%		7.4	%		7.9	%		8.0	%
Tangible common equity ratio, assuming full conversion of prefered stock ((H-G)/I)		8.6	%		7.8	%		7.7	%		8.2	%		8.4	%
Calculation of Pre-Tax Adjusted Earnings
Income before taxes	$	37,759		$	31,974		$	50,046		$	18,965		$	27,048
Add: Provision for credit losses		17,400			18,817			29,290			29,187			25,344
Add: OREO expenses, net		7,178			8,821			5,134			6,577			5,808
Add: Recourse obligation on loans previously sold		36			986			266			(916	)		103
Add: Covered loan collection expense		1,399			944			336			806			745
Add: Defeasance cost		848			—			—			—			—
Add: Seasonal payroll tax fluctuation		2,265			(932	)		(781	)		(131	)		1,844
Less: (Gain) loss from investment partnerships		(1,395	)		(723	)		1,439			240			(356	)
Less: Gain on bargain purchases		(840	)		—			(27,390	)		(746	)		(9,838	)
Less: Trading (gains) losses		(146	)		(216	)		(591	)		30			440
Less: Gains on available-for-sale securities, net		(816	)		(309	)		(225	)		(1,152	)		(106	)
Pre-tax adjusted earnings	$	63,688		$	59,362		$	57,524		$	52,860		$	51,032
Calculation of book value per share
Total shareholders’ equity	$	1,687,921		$	1,543,533		$	1,528,187		$	1,473,386		$	1,453,253
Less: Preferred stock		(176,302	)		(49,768	)		(49,736	)		(49,704	)		(49,672	)
(J) Total common equity	$	1,511,619		$	1,493,765		$	1,478,451		$	1,423,682		$	1,403,581
Actual common shares outstanding		36,289			35,978			35,924			34,988			34,947
Add: TEU conversion shares		6,593			7,666			7,666			7,342			6,696
(K) Common shares used for book value calculation		42,882			43,644			43,590			42,330			41,643
Book value per share (J/K)	$	35.25		$	34.23		$	33.92		$	33.63		$	33.70
Tangible common book value per share (H/K)	$	27.57		$	26.72		$	26.47		$	26.67		$	26.65

18

LOANS

Loan Portfolio Mix and Growth Rates

										% Growth
										From (1)			From
	March 31,			December 31,			March 31,			December 31,			March 31,
(Dollars in thousands)	2012			2011			2011			2011			2011
Balance:
Commercial	$	2,544,456		$	2,498,313		$	1,937,561			7	%		31	%
Commercial real-estate		3,585,760			3,514,261			3,356,562			8			7
Home equity		840,364			862,345			891,332			(10	)		(6	)
Residential real-estate		361,327			350,289			344,909			13			5
Premium finance receivables - commercial		1,512,630			1,412,454			1,337,851			29			13
Premium finance receivables - life insurance		1,693,763			1,695,225			1,539,521			—			10
Indirect consumer (2)		67,445			64,545			52,379			18			29
Consumer and other		111,639			123,945			101,687			(40	)		10
Total loans, net of unearned income, excluding covered loans	$	10,717,384		$	10,521,377		$	9,561,802			7	%		12	%
Covered loans		691,220			651,368			431,299			25			60
Total loans, net of unearned income	$	11,408,604		$	11,172,745		$	9,993,101			8	%		14	%
Mix:
Commercial		22	%		22	%		19	%
Commercial real-estate		32			31			34
Home equity		7			8			9
Residential real-estate		3			3			4
Premium finance receivables - commercial		13			13			13
Premium finance receivables - life insurance		15			15			15
Indirect consumer (2)		1			1			1
Consumer and other		1			1			1
Total loans, net of unearned income, excluding covered loans		94	%		94	%		96	%
Covered loans		6			6			4
Total loans, net of unearned income		100	%		100	%		100	%

⁽¹⁾  Annualized

⁽²⁾  Includes autos, boats, snowmobiles and other indirect consumer loans.

19

As of March 31, 2012

(Dollars in thousands)	Balance		% of Total Balance			Nonaccrual		> 90 Days Past Due and Still Accruing		Allowance For Loan Losses Allocation
Commercial:
Commercial and industrial	$	1,506,019		24.6	%	$	17,392	$	—	$	20,849
Franchise		169,277		2.8			1,792		—		1,876
Mortgage warehouse lines of credit		136,438		2.2			—		—		1,146
Community Advantage - homeowner associations		75,786		1.2			—		—		190
Aircraft		19,891		0.3			260		—		103
Asset-based lending		474,811		7.7			391		—		7,704
Municipal		76,885		1.3			—		—		1,031
Leases		77,671		1.3			—		—		306
Other		1,733		—			—		—		14
Purchased non-covered commercial loans (1)		5,945		0.1			—		424		—
Total commercial	$	2,544,456		41.5	%	$	19,835	$	424	$	33,219
Commercial Real-Estate:
Residential construction	$	56,111		0.9	%	$	1,807	$	—	$	1,744
Commercial construction		164,719		2.7			2,389		—		4,167
Land		184,042		3.0			25,306		—		10,606
Office		560,708		9.1			8,534		—		6,418
Industrial		590,903		9.6			1,864		—		5,475
Retail		528,077		8.6			7,323		73		4,561
Multi-family		324,938		5.3			3,708		—		8,400
Mixed use and other		1,123,940		18.4			11,773		—		12,581
Purchased non-covered commercial real-estate (1)		52,322		0.9			—		2,959		—
Total commercial real-estate	$	3,585,760		58.5	%	$	62,704	$	3,032	$	53,952
Total commercial and commercial real-estate	$	6,130,216		100.0	%	$	82,539	$	3,456	$	87,171
Commercial real-estate - collateral location by state:
Illinois	$	2,990,714		83.4	%
Wisconsin		331,901		9.3
Total primary markets	$	3,322,615		92.7	%
Florida		56,969		1.6
Arizona		39,329		1.1
Indiana		41,222		1.1
Other (no individual state greater than 0.5%)		125,625		3.5
Total	$	3,585,760		100.0	%

(1) Purchased loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. Loan agings are based upon contractually required payments.

20

DEPOSITS

Deposit Portfolio Mix and Growth Rates

										% Growth
										From (1)			From
	March 31,			December 31,			March 31,			December 31,			March 31,
(Dollars in thousands)	2012			2011			2011			2011			2011
Balance:
Non-interest bearing	$	1,901,753		$	1,785,433		$	1,279,256			26	%		49	%
NOW		1,756,313			1,698,778			1,526,955			14			15
Wealth Management deposits (2)		933,609			788,311			659,194			74			42
Money Market		2,306,726			2,263,253			1,844,416			8			25
Savings		943,066			888,592			749,681			25			26
Time certificates of deposit		4,824,386			4,882,900			4,855,667			(5	)		(1	)
Total deposits	$	12,665,853		$	12,307,267		$	10,915,169			12	%		16	%
Mix:
Non-interest bearing		15	%		15	%		12	%
NOW		14			14			14
Wealth Management deposits (2)		7			6			6
Money Market		18			18			17
Savings		8			7			7
Time certificates of deposit		38			40			44
Total deposits		100	%		100	%		100	%

⁽¹⁾  Annualized

⁽²⁾  Represents deposit balances of the Company’s subsidiary banks from brokerage customers of Wayne Hummer Investments, trust and asset management customers of The Chicago Trust Company and brokerage customers from unaffiliated companies which have been placed into deposit accounts of the Banks.

Time Certificates of Deposit Maturity/Re-pricing Analysis As of March 31, 2012

(Dollars in thousands)	CDARs & Brokered Certificates of Deposit (1)		MaxSafe Certificates of Deposit (1)		Variable Rate Certificates of Deposit (2)		Other Fixed Rate Certificates of Deposit (1)		Total Time Certificates of Deposits		Weighted-Average Rate of Maturing Time Certificates of Deposit (3)
1-3 months	$	106,166	$	51,535	$	175,188	$	780,101	$	1,112,990		0.93	%
4-6 months		46,150		53,920		1,814		742,678		844,562		1.23	%
7-9 months		4,794		23,235		1,164		625,928		655,121		0.96	%
10-12 months		117,446		23,750		375		489,450		631,021		0.97	%
13-18 months		176,879		22,279		—		456,366		655,524		1.24	%
19-24 months		41,209		30,142		—		233,208		304,559		1.35	%
24+ months		111,874		23,450		—		485,285		620,609		2.13	%
Total	$	604,518	$	228,311	$	178,541	$	3,813,016	$	4,824,386		1.22	%

⁽¹⁾  This category of certificates of deposit is shown by contractual maturity date.

⁽²⁾  This category includes variable rate certificates of deposit and savings certificates with the majority repricing on at least a monthly basis.

⁽³⁾  Weighted-average rate excludes the impact of purchase accounting fair value adjustments.

21

NET INTEREST INCOME

The following table presents a summary of Wintrust’s average balances, net interest income and related net interest margins, calculated on a fully tax-equivalent basis, for the first quarter of 2012 compared to the first quarter of 2011 (linked quarters):

	For the Three Months Ended								For the Three Months Ended
	March 31, 2012								March 31, 2011
(Dollars in thousands)	Average			Interest		Rate			Average			Interest		Rate
Liquidity management assets (1) (2) (7)	$	2,756,833		$	13,040		1.90	%	$	2,632,012		$	11,354		1.75	%
Other earning assets (2) (3) (7)		30,499			224		2.96			27,718			181		2.65
Loans, net of unearned income (2) (4) (7)		10,848,016			128,784		4.77			9,849,309			129,587		5.34
Covered loans		667,242			14,904		8.98			326,571			7,072		8.78
Total earning assets (7)	$	14,302,590		$	156,952		4.41	%	$	12,835,610		$	148,194		4.68	%
Allowance for loan losses		(131,769	)							(118,610	)
Cash and due from banks		143,869								152,264
Other assets		1,520,660								1,149,261
Total assets	$	15,835,350							$	14,018,525
Interest-bearing deposits	$	10,481,822		$	18,030		0.69	%	$	9,542,637		$	23,956		1.02	%
Federal Home Loan Bank advances		470,345			3,584		3.06			416,021			3,958		3.86
Notes payable and other borrowings		505,814			3,102		2.47			266,379			2,630		4.00
Secured borrowings - owed to securitization investors		514,923			2,549		1.99			600,000			3,040		2.05
Subordinated notes		35,000			169		1.91			50,000			212		1.69
Junior subordinated notes		249,493			3,157		5.01			249,493			4,370		7.01
Total interest-bearing liabilities	$	12,257,397		$	30,591		1.00	%	$	11,124,530		$	38,166		1.39	%
Non-interest bearing deposits		1,832,627								1,261,374
Other liabilities		180,664								194,752
Equity		1,564,662								1,437,869
Total liabilities and shareholders’ equity	$	15,835,350							$	14,018,525
Interest rate spread (5) (7)							3.41	%							3.29	%
Net free funds/contribution (6)	$	2,045,193					0.14	%	$	1,711,080					0.19	%
Net interest income/Net interest margin (7)				$	126,361		3.55	%				$	110,028		3.48	%

⁽¹⁾  Liquidity management assets include available-for-sale securities, interest earning deposits with banks, federal funds sold and securities purchased under resale agreements.

⁽²⁾  Interest income on tax-advantaged loans, trading securities and securities reflects a tax-equivalent adjustment based on a marginal federal corporate tax rate of 35%. The total adjustments for the three months ended March 31, 2012 and 2011 were $466,000 and $414,000, respectively.

⁽³⁾  Other earning assets include brokerage customer receivables and trading account securities.

⁽⁴⁾  Loans, net of unearned income, include loans held-for-sale and non-accrual loans.

⁽⁵⁾  Interest rate spread is the difference between the yield earned on earning assets and the rate paid on interest-bearing liabilities.

⁽⁶⁾  Net free funds are the difference between total average earning assets and total average interest-bearing liabilities. The estimated contribution to net interest margin from net free funds is calculated using the rate paid for total interest-bearing liabilities.

⁽⁷⁾  See “Supplemental Financial Measures/Ratios” for additional information on this performance ratio.

The 7 basis point increase in net interest margin in the first quarter of 2012 compared to the first quarter of 2011 was primarily attributable to a 33 basis point decline in the cost of interest-bearing deposits, an 80 basis point decline in the cost of wholesale borrowings over the last 12 months and the positive impact from the defeasance of a portion of the secured borrowings owed to securitization investors. Offsetting this was the negative impact of both competitive and economic pricing pressures on the commercial and industrial and commercial premium finance portfolios during the past 12 months and a decrease in accretable discount recognized as interest income on the purchased life insurance premium portfolio as prepayments declined, causing the yield on total loans, excluding covered loans, to decline by 57 basis points.

The majority of covered loans are accounted for in accordance with ASC 310-30. As such, the yield on these loans at the acquisition date represents a fair value loan yield. In periods subsequent to the quarter of acquisition, the Company has experienced cash collections generally better than estimated for the initial valuation. Overall, expected losses have decreased and expected estimated lives have increased, which together have led to generally higher effective yields as estimated cash flows on the pools of loans have improved.

22

The following table presents a summary of Wintrust’s average balances, net interest income and related net interest margins, calculated on a fully tax-equivalent basis, for the first quarter of 2012 compared to the fourth quarter of 2011 (sequential quarters):

	For the Three Months Ended								For the Three Months Ended
	March 31, 2012								December 31, 2011
(Dollars in thousands)	Average			Interest		Rate			Average			Interest		Rate
Liquidity management assets (1) (2) (7)	$	2,756,833		$	13,040		1.90	%	$	3,051,850		$	14,215		1.85	%
Other earning assets (2) (3) (7)		30,499			224		2.96			28,828			210		2.90
Loans, net of unearned income (2) (4) (7)		10,848,016			128,784		4.77			10,662,516			128,518		4.78
Covered loans		667,242			14,904		8.98			652,157			15,128		9.20
Total earning assets (7)	$	14,302,590		$	156,952		4.41	%	$	14,395,351		$	158,071		4.36	%
Allowance for loan losses		(131,769	)							(137,423	)
Cash and due from banks		143,869								130,437
Other assets		1,520,660								1,625,844
Total assets	$	15,835,350							$	16,014,209
Interest-bearing deposits	$	10,481,822		$	18,030		0.69	%	$	10,563,090		$	19,685		0.74	%
Federal Home Loan Bank advances		470,345			3,584		3.06			474,549			4,186		3.50
Notes payable and other borrowings		505,814			3,102		2.47			468,139			2,804		2.38
Secured borrowings - owed to securitization investors		514,923			2,549		1.99			600,000			3,076		2.03
Subordinated notes		35,000			169		1.91			38,370			176		1.79
Junior subordinated notes		249,493			3,157		5.01			249,493			3,043		4.77
Total interest-bearing liabilities	$	12,257,397		$	30,591		1.00	%	$	12,393,641		$	32,970		1.05	%
Non-interest bearing deposits		1,832,627								1,755,446
Other liabilities		180,664								333,186
Equity		1,564,662								1,531,936
Total liabilities and shareholders’ equity	$	15,835,350							$	16,014,209
Interest rate spread (5) (7)							3.41	%							3.31	%
Net free funds/contribution (6)	$	2,045,193					0.14	%	$	2,001,710					0.14	%
Net interest income/Net interest margin (7)				$	126,361		3.55	%				$	125,101		3.45	%

⁽¹⁾  Liquidity management assets include available-for-sale securities, interest earning deposits with banks, federal funds sold and securities purchased under resale agreements.

⁽²⁾  Interest income on tax-advantaged loans, trading securities and securities reflects a tax-equivalent adjustment based on a marginal federal corporate tax rate of 35%. The total adjustments for the three months ended March 31, 2012 was $466,000 and for the three months ended December 31, 2011 was $454,000.

⁽³⁾  Other earning assets include brokerage customer receivables and trading account securities.

⁽⁴⁾  Loans, net of unearned income, include loans held-for-sale and non-accrual loans.

⁽⁵⁾  Interest rate spread is the difference between the yield earned on earning assets and the rate paid on interest-bearing liabilities.

⁽⁶⁾  Net free funds are the difference between total average earning assets and total average interest-bearing liabilities. The estimated contribution to net interest margin from net free funds is calculated using the rate paid for total interest-bearing liabilities.

⁽⁷⁾  See “Supplemental Financial Measures/Ratios” for additional information on this performance ratio.

The 10 basis point increase in net interest margin in the first quarter of 2012 compared to the fourth quarter of 2011 resulted from positive re-pricing of retail interest-bearing deposits along with a more favorable deposit mix, higher yields on our premium finance loans and the positive impact from the defeasance of a portion of the secured borrowings owed to securitization investors.

23

NON-INTEREST INCOME

For the first quarter of 2012, non-interest income totaled $47.0 million, an increase of $6.1 million, or 15%, compared to the first quarter of 2011. The increase was primarily attributable to higher mortgage banking revenues, wealth management revenues and miscellaneous revenue, partially offset by a decrease in bargain purchase gains.

The following table presents non-interest income by category for the periods presented:

	Three Months Ended March 31,					$			%
(Dollars in thousands)	2012		2011			Change			Change
Brokerage	$	6,322	$	6,325		$	(3	)		—
Trust and asset management		6,079		3,911			2,168			55
Total wealth management		12,401		10,236			2,165			21
Mortgage banking		18,534		11,631			6,903			59
Service charges on deposit accounts		4,208		3,311			897			27
Gains on available-for-sale securities		816		106			710			NM
Gain on bargain purchases		840		9,838			(8,998	)		(91	)
Trading gains (losses)		146		(440	)		586			NM
Other:
Fees from covered call options		3,123		2,470			653			26
Bank Owned Life Insurance		919		876			43			5
Administrative services		766		717			49			7
Miscellaneous		5,270		2,142			3,128			146
Total Other		10,078		6,205			3,873			62
Total Non-Interest Income	$	47,023	$	40,887		$	6,136			15

NM - Not Meaningful

The significant changes in non-interest income for the quarter ended March 31, 2012 compared to the quarter ended March 31, 2011 are discussed below.

Wealth management revenue is comprised of the trust and asset management revenue of The Chicago Trust Company and Great Lakes Advisors and the brokerage commissions, money managed fees and insurance product commissions at Wayne Hummer Investments. Wealth management revenue totaled $12.4 million in the first quarter of 2012 and $10.2 million in the first quarter of 2011, an increase of 21%. The increase is mostly attributable to additional revenues resulting from the acquisition of Great Lakes Advisors in the third quarter of 2011.

Mortgage banking revenue includes revenue from activities related to originating, selling and servicing residential real estate loans for the secondary market. For the quarter ended March 31, 2012, this revenue totaled $18.5 million, an increase of $6.9 million when compared to the first quarter of 2011. The increase in mortgage banking revenue in the first quarter of 2012 as compared to the first quarter of 2011 resulted primarily from an increase in gain on sales of loans, which were driven by higher origination volumes and better pricing in the current quarter.

A summary of mortgage banking components is shown below:

Mortgage banking revenue

	Three Months Ended
(Dollars in thousands)	March 31, 2012			December 31, 2011			March 31, 2011
Mortgage loans originated and sold	$	714,655		$	883,017		$	562,088
Mortgage loans serviced for others	$	963,514		$	958,749		$	943,074
Fair value of mortgage servicing rights (MSRs)	$	7,201		$	6,700		$	9,448
MSRs as a percentage of loans serviced		0.75	%		0.70	%		1.00	%

Increased originations in the current quarter as compared to the first quarter of 2011 were primarily the result of originations from River City which was acquired in April 2011, and a favorable mortgage banking interest rate environment.

24

Gain on bargain purchases of $840,000 was recognized in the first quarter of 2012 related to the FDIC-assisted acquisition of Charter National. Gain on bargain purchases in the current quarter decreased compared to the $9.8 million recorded in the first quarter of 2011 as a result of the FDIC-assisted acquisitions of TBOC and CFBC.

Other non-interest income for the first quarter of 2012 totaled $10.1 million, compared to $6.2 million in the first quarter of 2011. Fees from certain covered call option transactions increased by $653,000 in the first quarter of 2012 as compared to the same period in the prior year. Historically, compression in the net interest margin was effectively offset by the Company’s covered call strategy. An illustration of the past effectiveness of this strategy is shown in the Supplemental Financial Information section (see page titled “Net Interest Margin (Including Call Option Income)”). Miscellaneous income is primarily comprised of gains from investment partnerships and revenues from interest rate hedging transactions related to both customer-based trades and the related matched trades with inter-bank dealer counterparties. The Company recorded gains on investment partnerships of $1.4 million in the first quarter of 2012 as compared to $356,000 in the first quarter of 2011. The Company recognized $2.5 million of swap fee revenue in the first quarter of 2012 compared to $951,000 in the first quarter of 2011. The revenue recognized on this customer-based activity is a function of the pace of organic loan growth, the shape of the LIBOR curve and the customers’ expectations of interest rates.

25

NON-INTEREST EXPENSE

Non-interest expense for the first quarter of 2012 totaled $117.8 million and increased approximately $19.6 million, or 20%, compared to the first quarter of 2011.

The following table presents non-interest expense by category for the periods presented:

	Three Months Ended March 31,				$			%
(Dollars in thousands)	2012		2011		Change			Change
Salaries and employee benefits:
Salaries	$	37,933	$	33,135		4,798			14
Commissions and bonus		16,802		10,714		6,088			57
Benefits		14,295		12,250		2,045			17
Total salaries and employee benefits		69,030		56,099		12,931			23
Equipment		5,400		4,264		1,136			27
Occupancy, net		8,062		6,505		1,557			24
Data processing		3,618		3,523		95			3
Advertising and marketing		2,006		1,614		392			24
Professional fees		3,604		3,546		58			2
Amortization of other intangible assets		1,049		689		360			52
FDIC insurance		3,357		4,518		(1,161	)		(26	)
OREO expenses, net		7,178		5,808		1,370			24
Other:
Commissions - 3rd party brokers		1,021		1,030		(9	)		(1	)
Postage		1,423		1,078		345			32
Stationery and supplies		919		840		79			9
Miscellaneous		11,092		8,595		2,497			29
Total other		14,455		11,543		2,912			25
Total Non-Interest Expense	$	117,759	$	98,109	$	19,650			20

The significant changes in non-interest expense for the quarter ended March 31, 2012 compared to the quarter ended March 31, 2011 are discussed below.

Salaries and employee benefits comprised 59% of total non-interest expense in the first quarter of 2012 as compared to 57% in the first quarter of 2011. Salaries and employee benefits expense increased $12.9 million, or 23%, in the first quarter of 2012 compared to the first quarter of 2011 primarily as a result of a $4.8 million increase in salaries caused by the addition of employees from the various acquisitions and larger staffing as the Company grows, a $6.1 million increase in bonus and commissions primarily attributable to the increase in variable pay based revenue and the Company’s long-term incentive program approved by the Compensation Committee of the Board of Directors in August 2011 and a $2.0 million increase from employee benefits (primarily health plan and payroll taxes related).

Equipment expense includes depreciation on equipment, maintenance and repairs, equipment rental and software license fees. Equipment expense totaled $5.4 million for the first quarter of 2012, an increase of $1.1 million compared to the first quarter of 2011. The increase is primarily the result of additional equipment depreciation as well as maintenance and repair costs associated with the increasing number of facilities due to acquisition activity.

Occupancy expense includes depreciation on premises, real estate taxes, utilities and maintenance of premises, as well as net rent expense for leased premises. Occupancy expense for the first quarter of 2012 was $8.1 million, an increase of $1.6 million, or 24%, compared to the same period in 2011. The increase is primarily the result of rent expense on additional leased premises and depreciation and property taxes on owned locations which were obtained in the FDIC-assisted acquisitions.

FDIC insurance expense for the first quarter of 2012 was $3.4 million, a decrease of $1.2 million, or 26%, compared to the same period in 2011. Effective April 1, 2011, standards applied in FDIC assessments set forth in the Federal Deposit Insurance Act were revised by the Dodd-Frank Wall Street Reform and Consumer Protection Act. These revisions modified definitions of a company’s insurance assessment base and assessment rates which led to the Company’s decreased FDIC expense in the first quarter of 2012 as compared to the first quarter of 2011.

26

OREO expenses include all costs related to obtaining, maintaining and selling other real estate owned properties. This expense totaled $7.2 million in the first quarter of 2012, an increase of $1.4 million compared to $5.8 million in the first quarter of 2011. The increase in OREO expenses is primarily related to higher valuation adjustments of properties held in OREO in the first quarter of 2012 as compared to the first quarter of 2011.

Miscellaneous expense includes ATM expenses, correspondent bank charges, directors’ fees, telephone, travel and entertainment, corporate insurance, dues and subscriptions, problem loan expenses and lending origination costs that are not deferred. Miscellaneous expenses in the first quarter of 2012 increased $2.5 million, or 29% compared to the same period in the prior year. The increase in the first quarter of 2012 compared to the same period in the prior year is attributable to increased expenses related to covered loans, general growth in the Company’s business and costs incurred for defeasance of secured borrowings owed to securitization investors in the first quarter of 2012.

As previously discussed in this document, the accounting and reporting policies of Wintrust conform to 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. One significant metric that is used by the Company in assessing operating performance is pre-tax adjusted earnings. Pre-tax adjusted earnings is calculated by adjusting income before taxes to exclude the provision for credit losses and certain significant items. Two ratios the Company uses to measure expense management are the efficiency ratio and the net overhead ratio. The efficiency ratio, which is calculated by dividing non-interest expense by total taxable-equivalent net revenue (less securities gains and losses), measures how much it costs to produce one dollar of revenue. The net overhead ratio is calculated by netting total non-interest expense and total non-interest income and dividing by total average assets. In both cases, a lower ratio indicates a higher degree of efficiency. See “Supplemental Financial Measures/Ratios” section earlier in this document for further detail on these non-GAAP measures/ratios.

The efficiency ratio and net overhead ratio are primarily reviewed by the Company based on pre-tax adjusted earnings. The Company believes that these measures provide a more meaningful view of the Company’s operating efficiency and expense management. The efficiency ratio, based on pre-tax adjusted earnings, was 62.31% for the first quarter of 2012, compared to 63.56% in the first quarter of 2011. The net overhead ratio, based on pre-tax adjusted earnings, was 1.58% in the first quarter of 2012, compared to 1.69% in the first quarter of 2011. These lower ratios indicate a higher degree of efficiency in the first quarter of 2012 as compared to the prior year quarter.

27

ASSET QUALITY

Allowance for Credit Losses, excluding covered loans

	Three Months Ended March 31,
(Dollars in thousands)	2012			2011
Allowance for loan losses at beginning of period	$	110,381		$	113,903
Provision for credit losses		15,154			24,376
Other adjustments		(238	)		—
Reclassification from/(to) allowance for unfunded lending-related commitments		152			2,116
Charge-offs:
Commercial		3,262			9,140
Commercial real estate		8,229			13,342
Home equity		2,590			773
Residential real estate		175			1,275
Premium finance receivables - commercial		837			1,507
Premium finance receivables - life insurance		13			30
Indirect consumer		51			120
Consumer and other		310			160
Total charge-offs		15,467			26,347
Recoveries:
Commercial		257			266
Commercial real estate		131			338
Home equity		162			8
Residential real estate		2			2
Premium finance receivables - commercial		277			268
Premium finance receivables - life insurance		21			—
Indirect consumer		30			66
Consumer and other		161			53
Total recoveries		1,041			1,001
Net charge-offs		(14,426	)		(25,346	)
Allowance for loan losses at period end	$	111,023		$	115,049
Allowance for unfunded lending-related commitments at period end		13,078			2,018
Allowance for credit losses at period end	$	124,101		$	117,067
Annualized net charge-offs by category as a percentage of its own respective category’s average:
Commercial		0.49	%		1.85	%
Commercial real estate		0.92			1.57
Home equity		1.15			0.34
Residential real estate		0.11			0.91
Premium finance receivables - commercial		0.15			0.37
Premium finance receivables - life insurance		—			0.01
Indirect consumer		0.13			0.41
Consumer and other		0.49			0.42
Total loans, net of unearned income, excluding covered loans		0.53	%		1.04	%
Net charge-offs as a percentage of the provision for credit losses		95.20	%		103.98	%
Loans at period-end	$	10,717,384		$	9,561,802
Allowance for loan losses as a percentage of loans at period end		1.04	%		1.20	%
Allowance for credit losses as a percentage of loans at period end		1.16	%		1.22	%

28

The allowance for credit losses, excluding the allowance for covered loan losses, is comprised of the allowance for loan losses and the allowance for unfunded lending-related commitments. The allowance for loan losses is a reserve against loan amounts that are actually funded and outstanding while the allowance for unfunded lending-related commitments (separate liability account) relates to certain amounts that Wintrust is committed to lend but for which funds have not yet been disbursed. The provision for credit losses, excluding the provision for covered loan losses, may contain both a component related to funded loans (provision for loan losses) and a component related to lending-related commitments (provision for unfunded loan commitments and letters of credit). Total credit-related reserves also include the credit discounts on the purchased life insurance premium finance receivables which are netted with the loan balance.

The provision for credit losses, excluding the provision for covered loan losses, totaled $15.2 million for the first quarter of 2012, $16.6 million for the fourth quarter of 2011 and $24.4 million for the first quarter of 2011. For the quarter ended March 31, 2012, net charge-offs, excluding covered loans, totaled $14.4 million compared to $25.1 million in the fourth quarter of 2011 and $25.3 million recorded in the first quarter of 2011. Annualized net charge-offs as a percentage of average loans, excluding covered loans, were 0.53% in the first quarter of 2012, 0.93% in the fourth quarter of 2011 and 1.04% in the first quarter of 2011. The lower level of provision for credit losses and the allowance for credit losses, reflect the improvements in credit quality metrics for the first quarter of 2012. The graphs on pages four and five of this press release highlight the level of total non-performing loans, the improvement seen in the reduced levels of inflows to non-performing loans and the improvement in the allowance for loan loss coverage of non-performing loans.

Management believes the allowance for credit losses is appropriate to provide for inherent losses in the portfolio. There can be no assurances however, that future losses will not exceed the amounts provided for, thereby affecting future results of operations. The amount of future additions to the allowance for credit losses will be dependent upon management’s assessment of the appropriateness of the allowance based on its evaluation of economic conditions, changes in real estate values, interest rates, the regulatory environment, the level of past-due and non-performing loans, and other factors. The increase in the allowance for credit losses from the end of the prior quarter reflects the continued changes in real estate values on certain types of credits, specifically credits with residential development collateral valuation exposure and loan growth.

The Company also provides a provision for covered loan losses on covered loans and an allowance for covered loan losses on covered loans. Please see “Covered Assets” later in this document for more detail.

29

The table below shows the aging of the Company’s loan portfolio, excluding covered loans, at March 31, 2012:

As of March 31, 2012

(Dollars in thousands)	Nonaccrual		90+ days and still accruing		60-89 days past due		30-59 days past due		Current		Total Loans
Loan Balances:
Commercial
Commercial and industrial	$	17,392	$	—	$	9,210	$	24,634	$	1,454,783	$	1,506,019
Franchise		1,792		—		—		100		167,385		169,277
Mortgage warehouse lines of credit		—		—		—		—		136,438		136,438
Community Advantage - homeowners association		—		—		—		—		75,786		75,786
Aircraft		260		—		428		1,189		18,014		19,891
Asset-based lending		391		—		926		970		472,524		474,811
Municipal		—		—		—		—		76,885		76,885
Leases		—		—		—		11		77,660		77,671
Other		—		—		—		—		1,733		1,733
Purchased non-covered commercial (1)		—		424		1,063		—		4,458		5,945
Total commercial		19,835		424		11,627		26,904		2,485,666		2,544,456
Commercial real-estate:
Residential construction		1,807		—		—		4,469		49,835		56,111
Commercial construction		2,389		—		3,100		—		159,230		164,719
Land		25,306		—		6,606		6,833		145,297		184,042
Office		8,534		—		4,310		5,471		542,393		560,708
Industrial		1,864		—		6,683		10,101		572,255		590,903
Retail		7,323		73		—		8,797		511,884		528,077
Multi-family		3,708		—		1,496		4,691		315,043		324,938
Mixed use and other		11,773		—		17,745		30,689		1,063,733		1,123,940
Purchased non-covered commercial real-estate (1)		—		2,959		301		1,601		47,461		52,322
Total commercial real-estate		62,704		3,032		40,241		72,652		3,407,131		3,585,760
Home equity		12,881		—		2,049		6,576		818,858		840,364
Residential real estate		5,329		—		453		13,530		341,358		360,670
Purchased non-covered residential real estate (1)		—		—		—		—		657		657
Premium finance receivables
Commercial insurance loans		7,650		4,619		3,360		17,612		1,479,389		1,512,630
Life insurance loans		—		—		—		389		1,132,970		1,133,359
Purchased life insurance loans (1)		—		—		—		—		560,404		560,404
Indirect consumer		152		257		53		317		66,666		67,445
Consumer and other		121		—		20		1,601		109,723		111,465
Purchased non-covered consumer and other (1)		—		—		—		—		174		174
Total loans, net of unearned income, excluding covered loans	$	108,672	$	8,332	$	57,803	$	139,581	$	10,402,996	$	10,717,384
Covered loans		—		182,011		20,254		28,249		460,706		691,220
Total loans, net of unearned income	$	108,672	$	190,343	$	78,057	$	167,830	$	10,863,702	$	11,408,604

(1) Purchased loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. Loan agings are based upon contractually required payments.

30

Aging as a % of Loan Balance:

	Nonaccrual			90+ days and still accruing			60-89 days past due			30-59 days past due			Current			Total Loans
Commercial
Commercial and industrial		1.2	%		—	%		0.6	%		1.6	%		96.6	%		100.0	%
Franchise		1.1			—			—			0.1			98.8			100.0
Mortgage warehouse lines of credit		—			—			—			—			100.0			100.0
Community Advantage - homeowners association		—			—			—			—			100.0			100.0
Aircraft		1.3			—			2.2			6.0			90.5			100.0
Asset-based lending		0.1			—			0.2			0.2			99.5			100.0
Municipal		—			—			—			—			100.0			100.0
Leases		—			—			—			—			100.0			100.0
Other		—			—			—			—			100.0			100.0
Purchased non-covered commercial (1)		—			7.1			17.9			—			75.0			100.0
Total commercial		0.8			—			0.5			1.1			97.6			100.0
Commercial real-estate
Residential construction		3.2			—			—			8.0			88.8			100.0
Commercial construction		1.5			—			1.9			—			96.6			100.0
Land		13.8			—			3.6			3.7			78.9			100.0
Office		1.5			—			0.8			1.0			96.7			100.0
Industrial		0.3			—			1.1			1.7			96.9			100.0
Retail		1.4			—			—			1.7			96.9			100.0
Multi-family		1.1			—			0.5			1.4			97.0			100.0
Mixed use and other		1.0			—			1.6			2.7			94.7			100.0
Purchased non-covered commercial real-estate (1)		—			5.7			0.6			3.1			90.6			100.0
Total commercial real-estate		1.7			0.1			1.1			2.0			95.1			100.0
Home equity		1.5			—			0.2			0.8			97.5			100.0
Residential real estate		1.5			—			0.1			3.8			94.6			100.0
Purchased non-covered residential real estate (1)		—			—			—			—			100.0			100.0
Premium finance receivables
Commercial insurance loans		0.5			0.3			0.2			1.2			97.8			100.0
Life insurance loans		—			—			—			—			100.0			100.0
Purchased life insurance loans (1)		—			—			—			—			100.0			100.0
Indirect consumer		0.2			0.4			0.1			0.5			98.8			100.0
Consumer and other		0.1			—			—			1.4			98.5			100.0
Purchased non-covered consumer and other (1)		—			—			—			—			100.0			100.0
Total loans, net of unearned income, excluding covered loans		1.0	%		0.1	%		0.5	%		1.3	%		97.1	%		100.0	%
Covered loans		—			26.3			2.9			4.1			66.7			100.0
Total loans, net of unearned income		1.0	%		1.7	%		0.7	%		1.5	%		95.1	%		100.0	%

As of March 31, 2012, $57.8 million of all loans, excluding covered loans, or 0.5%, were 60 to 89 days past due and $139.6 million, or 1.3%, were 30 to 59 days (or one payment) past due. As of December 31, 2011, $45.4 million of all loans, excluding covered loans, or 0.4%, were 60 to 89 days past due and $94.1 million, or 0.9%, were 30 to 59 days (or one payment) past due. The majority 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 March 31, 2012 that are current with regard to the contractual terms of the loan agreement represent 97.5% of the total home equity portfolio. Residential real estate loans at March 31, 2012 that are current with regards to the contractual terms of the loan agreements comprise 94.7% of total residential real estate loans outstanding, which includes purchased non-covered residential real-estate.

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The table below shows the aging of the Company’s loan portfolio, excluding covered loans, at December 31, 2011:

As of December 31, 2011

(Dollars in thousands)	Nonaccrual		90+ days and still accruing		60-89 days past due		30-59 days past due		Current		Total Loans
Loan Balances:
Commercial
Commercial and industrial	$	16,154	$	—	$	7,496	$	15,797	$	1,411,004	$	1,450,451
Franchise		1,792		—		—		—		140,983		142,775
Mortgage warehouse lines of credit		—		—		—		—		180,450		180,450
Community Advantage - homeowners association		—		—		—		—		77,504		77,504
Aircraft		—		—		709		170		19,518		20,397
Asset-based lending		1,072		—		749		11,026		452,890		465,737
Municipal		—		—		—		—		78,319		78,319
Leases		—		—		—		431		71,703		72,134
Other		—		—		—		—		2,125		2,125
Purchased non-covered commercial (1)		—		589		74		—		7,758		8,421
Total commercial		19,018		589		9,028		27,424		2,442,254		2,498,313
Commercial real-estate:
Residential construction		1,993		—		4,982		1,721		57,115		65,811
Commercial construction		2,158		—		—		150		167,568		169,876
Land		31,547		—		4,100		6,772		136,112		178,531
Office		10,614		—		2,622		930		540,280		554,446
Industrial		2,002		—		508		4,863		548,429		555,802
Retail		5,366		—		5,268		8,651		517,444		536,729
Multi-family		4,736		—		3,880		347		305,594		314,557
Mixed use and other		8,092		—		7,163		20,814		1,050,585		1,086,654
Purchased non-covered commercial real-estate (1)		—		2,198		—		252		49,405		51,855
Total commercial real-estate		66,508		2,198		28,523		44,500		3,372,532		3,514,261
Home equity		14,164		—		1,351		3,262		843,568		862,345
Residential real estate		6,619		—		2,343		3,112		337,522		349,596
Purchased non-covered residential real estate (1)		—		—		—		—		693		693
Premium finance receivables
Commercial insurance loans		7,755		5,281		3,850		13,787		1,381,781		1,412,454
Life insurance loans		54		—		—		423		1,096,285		1,096,762
Purchased life insurance loans (1)		—		—		—		—		598,463		598,463
Indirect consumer		138		314		113		551		63,429		64,545
Consumer and other		233		—		170		1,070		122,393		123,866
Purchased non-covered consumer and other (1)		—		—		—		2		77		79
Total loans, net of unearned income, excluding covered loans	$	114,489	$	8,382	$	45,378	$	94,131	$	10,258,997	$	10,521,377
Covered loans		—		174,727		25,507		24,799		426,335		651,368
Total loans, net of unearned income	$	114,489	$	183,109	$	70,885	$	118,930	$	10,685,332	$	11,172,745

(1) Purchased loans represent loans acquired with evidence of credit quality deterioration since origination, in accordance with ASC 310-30. Loan agings are based upon contractually required payments.

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Aging as a % of Loan Balance:

	Nonaccrual			90+ days and still accruing			60-89 days past due			30-59 days past due			Current			Total Loans
Commercial
Commercial and industrial		1.1	%		—	%		0.5	%		1.1	%		97.3	%		100.0	%
Franchise		1.3			—			—			—			98.7			100.0
Mortgage warehouse lines of credit		—			—			—			—			100.0			100.0
Community Advantage - homeowners association		—			—			—			—			100.0			100.0
Aircraft		—			—			3.5			0.8			95.7			100.0
Asset-based lending		0.2			—			0.2			2.4			97.2			100.0
Municipal		—			—			—			—			100.0			100.0
Leases		—			—			—			0.6			99.4			100.0
Other		—			—			—			—			100.0			100.0
Purchased non-covered commercial (1)		—			7.0			0.9			—			92.1			100.0
Total commercial		0.8			0.0			0.4			1.1			97.7			100.0
Commercial real-estate
Residential construction		3.0			—			7.6			2.6			86.8			100.0
Commercial construction		1.3			—			—			0.1			98.6			100.0
Land		17.7			—			2.3			3.8			76.2			100.0
Office		1.9			—			0.5			0.2			97.4			100.0
Industrial		0.4			—			0.1			0.9			98.6			100.0
Retail		1.0			—			1.0			1.6			96.4			100.0
Multi-family		1.5			—			1.2			0.1			97.2			100.0
Mixed use and other		0.7			—			0.7			1.9			96.7			100.0
Purchased non-covered commercial real-estate (1)		—			4.2			—			0.5			95.3			100.0
Total commercial real-estate		1.9			0.1			0.8			1.3			95.9			100.0
Home equity		1.6			—			0.2			0.4			97.8			100.0
Residential real estate		1.9			—			0.7			0.9			96.5			100.0
Purchased non-covered residential real estate (1)		—			—			—			—			100.0			100.0
Premium finance receivables
Commercial insurance loans		0.5			0.4			0.3			1.0			97.8			100.0
Life insurance loans		0.0			—			—			0.0			100.0			100.0
Purchased life insurance loans (1)		—			—			—			—			100.0			100.0
Indirect consumer		0.2			0.5			0.2			0.9			98.2			100.0
Consumer and other		0.2			—			0.1			0.9			98.8			100.0
Purchased non-covered consumer and other (1)		—			—			—			2.5			97.5			100.0
Total loans, net of unearned income, excluding covered loans		1.1	%		0.1	%		0.4	%		0.9	%		97.5	%		100.0	%
Covered loans		—			26.8			3.9			3.8			65.5			100.0
Total loans, net of unearned income		1.0	%		1.6	%		0.6	%		1.1	%		95.7	%		100.0	%

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Non-performing Assets

The following table sets forth Wintrust’s non-performing assets, excluding covered assets and purchased non-covered loans acquired with evidence of credit quality deterioration since origination, at the dates indicated.

(Dollars in thousands)	March 31, 2012			December 31, 2011			March 31, 2011
Loans past due greater than 90 days and still accruing:
Commercial	$	—		$	—		$	150
Commercial real-estate		73			—			1,997
Home equity		—			—			—
Residential real-estate		—			—			—
Premium finance receivables - commercial		4,619			5,281			6,319
Premium finance receivables - life insurance		—			—			—
Indirect consumer		257			314			310
Consumer and other		—			—			1
Total loans past due greater than 90 days and still accruing		4,949			5,595			8,777
Non-accrual loans:
Commercial		19,835			19,018			26,157
Commercial real-estate		62,704			66,508			94,001
Home equity		12,881			14,164			11,184
Residential real-estate		5,329			6,619			4,909
Premium finance receivables - commercial		7,650			7,755			9,550
Premium finance receivables - life insurance		—			54			342
Indirect consumer		152			138			320
Consumer and other		121			233			147
Total non-accrual loans		108,672			114,489			146,610
Total non-performing loans:
Commercial		19,835			19,018			26,307
Commercial real-estate		62,777			66,508			95,998
Home equity		12,881			14,164			11,184
Residential real-estate		5,329			6,619			4,909
Premium finance receivables - commercial		12,269			13,036			15,869
Premium finance receivables - life insurance		—			54			342
Indirect consumer		409			452			630
Consumer and other		121			233			148
Total non-performing loans	$	113,621		$	120,084		$	155,387
Other real estate owned		69,575			79,093			85,290
Other real estate owned - obtained in acquisition		6,661			7,430			—
Total non-performing assets	$	189,857		$	206,607		$	240,677
Total non-performing loans by category as a percent of its own respective category’s period-end balance:
Commercial		0.78	%		0.76	%		1.36	%
Commercial real-estate		1.75			1.89			2.86
Home equity		1.53			1.64			1.25
Residential real-estate		1.47			1.89			1.42
Premium finance receivables - commercial		0.81			0.92			1.19
Premium finance receivables - life insurance		—			—			0.02
Indirect consumer		0.61			0.70			1.20
Consumer and other		0.11			0.19			0.15
Total loans, net of unearned income		1.06	%		1.14	%		1.63	%
Total non-performing assets as a percentage of total assets		1.17	%		1.30	%		1.71	%
Allowance for loan losses as a percentage of total non-performing loans		97.71	%		91.92	%		74.04	%

Non-performing Commercial and Commercial Real Estate

Commercial non-performing loans totaled $19.8 million as of March 31, 2012 compared to $19.0 million as of December 31, 2011 and $26.3 million as of March 31, 2011. Commercial real estate non-performing loans totaled $62.8 million as of March 31, 2012 compared to $66.5 million as of December 31, 2011 and $96.0 million as of March 31, 2011.

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Management is pursuing the resolution of all credits in this category. At this time, management believes reserves are appropriate to absorb inherent losses that are expected to occur upon the ultimate resolution of these credits.

Non-performing Residential Real Estate and Home Equity

Non-performing home equity and residential real estate loans totaled $18.2 million as of March 31, 2012. The balance decreased $2.6 million from December 31, 2011 and increased $2.1 million from March 31, 2011. The March 31, 2012 non-performing balance is comprised of $5.3 million of residential real estate (35 individual credits) and $12.9 million of home equity loans (42 individual credits). On average, this is approximately 5 non-performing residential real estate loans and home equity loans per chartered bank within the Company. The Company believes control and collection of these loans is very manageable. At this time, management believes reserves are adequate to absorb inherent losses that may occur upon the ultimate resolution of these credits.

Non-performing Commercial Insurance Premium Finance Receivables

The table below presents the level of non-performing property and casualty premium finance receivables as of March 31, 2012 and 2011, and the amount of net charge-offs for the quarters then ended.

(Dollars in thousands)	March 31, 2012			March 31, 2011
Non-performing premium finance receivables - commercial	$	12,269		$	15,869
- as a percent of premium finance receivables - commercial outstanding		0.81	%		1.19	%
Net charge-offs of premium finance receivables - commercial	$	560		$	1,239
- annualized as a percent of average premium finance receivables - commercial		0.15	%		0.37	%

Fluctuations in this category may occur due to timing and nature of account collections from insurance carriers. The Company’s underwriting standards, regardless of the condition of the economy, have remained consistent. We anticipate that net charge-offs and non-performing asset levels in the near term will continue to be at levels that are within acceptable operating ranges for this category of loans. Management is comfortable with administering the collections at this level of non-performing property and casualty premium finance receivables and believes reserves are adequate to absorb inherent losses that may occur upon the ultimate resolution of these credits.

Due to the nature of collateral for commercial premium finance receivables, it customarily takes 60-150 days to convert the collateral into cash. Accordingly, the level of non-performing commercial premium finance receivables is not necessarily indicative of the loss inherent in the portfolio. In the event of default, Wintrust has the power to cancel the insurance policy and collect the unearned portion of the premium from the insurance carrier. In the event of cancellation, the cash returned in payment of the unearned premium by the insurer should generally be sufficient to cover the receivable balance, the interest and other charges due. Due to notification requirements and processing time by most insurance carriers, many receivables will become delinquent beyond 90 days while the insurer is processing the return of the unearned premium. Management continues to accrue interest until maturity as the unearned premium is ordinarily sufficient to pay-off the outstanding balance and contractual interest due.

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Nonperforming Loans Rollforward

The table below presents a summary of the changes in the balance of non-performing loans, excluding covered loans, for the three month periods ending March 31, 2012 and 2011:

	Three Months Ended
(Dollars in thousands)	March 31, 2012			March 31, 2011
Balance at beginning of period	$	120,084		$	142,132
Additions, net		17,867			56,168
Return to performing status		(922	)		(1,175	)
Payments received		(4,640	)		(1,589	)
Transfer to OREO		(6,601	)		(22,425	)
Charge-offs		(11,307	)		(14,100	)
Net change for niche loans (1)		(860	)		(3,624	)
Balance at end of period	$	113,621		$	155,387

⁽¹⁾  This includes activity for premium finance receivables and indirect consumer loans.

Restructured Loans

The table below presents a summary of restructured loans for the respective period, presented by loan category and accrual status:

(Dollars in thousands)	March 31, 2012		December 31, 2011		March 31, 2011
Accruing:
Commercial	$	9,324	$	9,270	$	12,620
Commercial real estate		134,516		104,864		55,202
Residential real estate and other		7,176		5,786		1,560
Total accrual	$	151,016	$	119,920	$	69,382
Non-accrual: (1)
Commercial	$	1,465	$	1,564	$	5,582
Commercial real estate		11,805		7,932		21,174
Residential real estate and other		760		1,102		431
Total non-accrual	$	14,030	$	10,598	$	27,187
Total restructured loans:
Commercial	$	10,789	$	10,834	$	18,202
Commercial real estate		146,321		112,796		76,376
Residential real estate and other		7,936		6,888		1,991
Total restructured loans	$	165,046	$	130,518	$	96,569

⁽¹⁾  Included in total non-performing loans.

At March 31, 2012, the Company had $165.0 million in loans with modified terms representing 182 credits in which economic concessions were granted to certain borrowers to better align the terms of their loans with their current ability to pay.

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The table below presents a summary of restructured loans as of March 31, 2012 and March 31, 2011, and shows the changes in the balance during those periods:

Quarter Ended March 31, 2012

(Dollars in thousands)	Commercial			Commercial Real-estate			Residential Real-estate and Other			Total
Balance at beginning of period	$	10,834		$	112,796		$	6,888		$	130,518
Additions during the period		118			38,519			1,060			39,697
Reductions:
Charge-offs		—			(1,342	)		—			(1,342	)
Transferred to OREO		—			(2,129	)		—			(2,129	)
Removal of restructured loan status (1)		—			(463	)		—			(463	)
Payments received		(163	)		(1,060	)		(12	)		(1,235	)
Balance at period end	$	10,789		$	146,321		$	7,936		$	165,046

Quarter Ended March 31, 2011

(Dollars in thousands)	Commercial			Commercial Real-estate			Residential Real-estate and Other		Total
Balance at beginning of period	$	18,028		$	81,366		$	1,796	$	101,190
Additions during the period		1,685			7,487			195		9,367
Reductions:
Charge-offs		(1,000	)		(2,198	)		—		(3,198	)
Transferred to OREO		—			(1,791	)		—		(1,791	)
Removal of restructured loan status (1)		(244	)		(4,670	)		—		(4,914	)
Payments received		(267	)		(3,818	)		—		(4,085	)
Balance at period end	$	18,202		$	76,376		$	1,991	$	96,569

(1) Loan was previously classified as a troubled debt restructuring and subsequently performed in compliance with the loan’s modified terms for a period of six months (including over a calendar year-end) at a modified interest rate which represented a market rate at the time of restructuring. Per our TDR policy, the TDR classification is removed.

The Company’s approach to restructuring 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 or the director’s loan committee. 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.

A modification of a loan with an existing credit risk rating of six or worse or a modification of any other credit, which will result in a restructured credit risk rating of six or worse must be reviewed for troubled debt restructuring (“TDR”) classification. In that event, our Managed Assets Division conducts an overall credit and collateral review. A modification of a loan is considered to be a TDR if both (1) the borrower is experiencing financial difficulty and (2) for economic or legal reasons, the bank grants a concession to a borrower that it would not otherwise consider. The modification of a loan where the credit risk rating is five or better both before and after such modification are not reviewed for TDR status. Based on the Company’s credit risk rating system, it considers that borrowers whose credit risk rating is five or better are not experiencing financial difficulties and therefore, are not considered TDRs.

37

TDRs are reviewed at the time of modification and on a quarterly basis to determine if a specific reserve is needed. The carrying amount of the loan is compared to the expected payments to be received, discounted at the loan’s original rate, or for collateral dependent loans, to the fair value of the collateral. Any shortfall is recorded as a specific reserve.

All credits determined to be a TDR will continue to be classified as a TDR in all subsequent periods, unless the borrower has been in compliance with the loan’s modified terms for a period of six months (including over a calendar year-end) and the modified interest rate represented a market rate at the time of a restructuring. The Managed Assets Division, in consultation with the respective loan officer, determines whether the modified interest rate represented a current market rate at the time of restructuring. Using knowledge of current market conditions and rates, competitive pricing on recent loan originations, and an assessment of various characteristics of the modified loan (including collateral position and payment history), an appropriate market rate for a new borrower with similar risk is determined. If the modified interest rate meets or exceeds this market rate for a new borrower with similar risk, the modified interest rate represents a market rate at the time of restructuring. Additionally, before removing a loan from TDR classification, a review of the current or previously measured impairment on the loan and any concerns related to future performance by the borrower is conducted. If concerns exist about the future ability of the borrower to meet its obligations under the loans based on a credit review by the Managed Assets Division, the TDR classification is not removed from the loan.

Each restructured loan was reviewed for impairment at March 31, 2012 and approximately $2.7 million of impairment was present and appropriately reserved for through the Company’s normal reserving methodology in the Company’s allowance for loan losses.

Other Real Estate Owned

The table below presents a summary of other real estate owned, excluding covered other real estate owned, as of March 31, 2012 and shows the activity for the respective period and the balance for each property type:

	Three Months Ended
(Dollars in thousands)	March 31, 2012			December 31, 2011			March 31, 2011
Balance at beginning of period	$	86,523		$	96,924		$	71,214
Disposals/resolved		(11,681	)		(7,722	)		(11,515	)
Transfers in at fair value, less costs to sell		6,876			6,084			28,865
Additions from acquisition		—			—			—
Fair value adjustments		(5,482	)		(8,763	)		(3,274	)
Balance at end of period	$	76,236		$	86,523		$	85,290
	Period End
Balance by Property Type	March 31, 2012			December 31, 2011			March 31, 2011
Residential real estate	$	6,647		$	7,327		$	10,570
Residential real estate development		14,764			19,923			17,808
Commercial real estate		54,825			59,273			56,912
Total	$	76,236		$	86,523		$	85,290

38

Covered Assets

In conjunction with FDIC-assisted transactions, the Company entered into loss share agreements with the FDIC. These agreements cover realized losses on loans, foreclosed real estate and certain other assets. These loss share assets are measured separately from the loan portfolios because they are not contractually embedded in the loans and are not transferable with the loans should the Company choose to dispose of them. Fair values at the acquisition dates were estimated based on projected cash flows available for loss-share based on the credit adjustments estimated for each loan pool and the loss share percentages. The loss share assets are also separately measured from the related loans and foreclosed real estate and recorded separately on the Consolidated Statements of Condition. Subsequent to the acquisition date, reimbursements received from the FDIC for actual incurred losses will reduce the loss share assets. Additional expected losses, to the extent such expected losses result in the recognition of an allowance for loan losses, will increase the loss share assets. The loss share agreements with the FDIC require the Company to reimburse the FDIC in the event that actual losses on covered assets are lower than the original loss estimates agreed upon with the FDIC with respect of such assets in the loss share agreements. The allowance for loan losses for loans acquired in FDIC-assisted transactions is determined without giving consideration to the amounts recoverable through loss share agreements (since the loss share agreements are separately accounted for and thus presented “gross” on the balance sheet). On the Consolidated Statements of Income, the provision for credit losses is reported net of changes in the amount recoverable under the loss share agreements. Reductions to expected losses, to the extent such reductions to expected losses are the result of an improvement to the actual or expected cash flows from the covered assets, will reduce the loss share assets. The increases in cash flows for the purchased loans are recognized as interest income prospectively.

The following table provides a comparative analysis for the period end balances of the covered asset components and any changes in the allowance for covered loan losses.

(Dollars in thousands)	March 31, 2012			December 31, 2011			March 31, 2011
Period End Balances:
Loans	$	691,220		$	651,368		$	431,299
Other real estate owned and other assets		40,851			47,459			36,296
FDIC Indemnification asset		263,212			344,251			124,785
Total covered assets	$	995,283		$	1,043,078		$	592,380
Allowance for Covered Loan Losses Rollforward:
Balance at beginning of quarter	$	12,977		$	12,496		$	—
Provision for covered loan losses before benefit attributable to FDIC loss share agreements		11,229			10,693			4,844
Benefit attributable to FDIC loss share agreements		(8,983	)		(8,554	)		(3,876	)
Net provision for covered loan losses		2,246			2,139			968
Increase in FDIC indemnification asset		8,983			8,554			3,876
Loans charged-off		(6,523	)		(10,212	)		—
Recoveries of loans charged-off		52			—			—
Net charge-offs		(6,471	)		(10,212	)		—
Balance at end of quarter	$	17,735		$	12,977		$	4,844

39

Changes in Accretable Yield

The excess of cash flows expected to be collected over the carrying value of loans accounted for under ASC 310-30 is referred to as the accretable yield and is recognized in interest income using an effective yield method over the remaining life of the loan, or pool of loans. The accretable yield is affected by:

• Changes in interest rate indices for variable rate loans accounted for under ASC 310-30 – Expected future cash flows are based on the variable rates in effect at the time of the regular evaluations of cash flows expected to be collected;

• Changes in prepayment assumptions – Prepayments affect the estimated life of loans accounted for under ASC 310-30 which may change the amount of interest income, and possibly principal, expected to be collected; and

• Changes in the expected principal and interest payments over the estimated life – Updates to expected cash flows are driven by the credit outlook and actions taken with borrowers. Changes in expected future cash flows from loan modifications are included in the regular evaluations of cash flows expected to be collected.

The following table provides activity for the accretable yield of loans accounted for under ASC 310-30.

	Three Months Ended March 31, 2012						Three Months Ended March 31, 2011
(Dollars in thousands)	Bank Acquisitions			Life Insurance Premium Finance Loans			Bank Acquisitions			Life Insurance Premium Finance Loans
Accretable yield, beginning balance	$	173,120		$	18,861		$	39,809		$	33,315
Acquisitions		2,288			—			7,107			—
Accretable yield amortized to interest income		(14,892	)		(3,737	)		(7,072	)		(9,052	)
Accretable yield amortized to indemnification asset(1)		(21,377	)		—			(7,087	)		—
Reclassification from non-accretable difference(2)		41,601			—			48,844			184
Increases in interest cash flows due to payments and changes in interest rates		1,482			724			9,731			1,096
Accretable yield, ending balance	$	182,222		$	15,848		$	91,332		$	25,543

(1) Represents the portion of the current period accreted yield, resulting from lower expected losses, applied to reduce the loss share indemnification asset

(2) Reclassification is the result of subsequent increases in expected principal cash flows.

40

WINTRUST SUBSIDIARIES AND LOCATIONS

Wintrust is a financial holding company whose common stock is traded on the Nasdaq Global Select Market (Nasdaq: WTFC). Its 15 community bank subsidiaries are: Lake Forest Bank & Trust Company, Hinsdale Bank & Trust Company, North Shore Community Bank & Trust Company in Wilmette, Libertyville Bank & Trust Company, Barrington Bank & Trust Company, Crystal Lake Bank & Trust Company, Northbrook Bank & Trust Company, Schaumburg Bank & Trust Company, N.A., Village Bank & Trust in Arlington Heights, Beverly Bank & Trust Company in Chicago, Wheaton Bank & Trust Company, State Bank of The Lakes in Antioch, Old Plank Trail Community Bank, N.A. in New Lenox, St. Charles Bank & Trust Company and Town Bank in Hartland, Wisconsin. The banks also operate facilities in Illinois in Algonquin, Bloomingdale, Buffalo Grove, Cary, Chicago, Clarendon Hills, Deerfield, Downers Grove, Elgin, Frankfort, Geneva, Glencoe, Glen Ellyn, Gurnee, Grayslake, Hanover Park, Highland Park, Highwood, Hoffman Estates, Island Lake, Itasca, Lake Bluff, Lake Villa, Lincoln Park, Lindenhurst, McHenry, Mokena, Mount Prospect, Mundelein, Naperville, North Chicago, Northfield, Norridge, Palatine, Park Ridge, Prospect Heights, Ravenswood, Ravinia, Riverside, Rogers Park, Roselle, Sauganash, Skokie, Spring Grove, Vernon Hills, Wauconda, Western Springs, Willowbrook, Winnetka and Wood Dale and in Delafield, Elm Grove, Madison, Wales, Wisconsin.

Additionally, the Company operates various non-bank subsidiaries. First Insurance Funding Corporation, one of the largest insurance premium finance companies operating in the United States, serves commercial and life insurance loan customers throughout the country. Tricom, Inc. of Milwaukee provides high-yielding, short-term accounts receivable financing and value-added out-sourced administrative services, such as data processing of payrolls, billing and cash management services, to temporary staffing service clients located throughout the United States. Wintrust Mortgage, a division of Barrington Bank & Trust Company, engages primarily in the origination and purchase of residential mortgages for sale into the secondary market through origination offices located throughout the United States. Loans are also originated nationwide through relationships with wholesale and correspondent offices. Wayne Hummer Investments, LLC is a broker-dealer providing a full range of private client and brokerage services to clients and correspondent banks located primarily in the Midwest. Great Lakes Advisors provides money management services and advisory services to individual accounts. Advanced Investment Partners, LLC is an investment management firm specializing in the active management of domestic equity investment strategies. The Chicago Trust Company, a trust subsidiary, allows Wintrust to service customers’ trust and investment needs at each banking location. Wintrust Information Technology Services Company provides information technology support, item capture and statement preparation services to the Wintrust subsidiaries.

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,” “point,” “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, which may include, but are not limited to, those listed below and the Risk Factors discussed under Item 1A of the Company’s 2010 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 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, organic 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:

• negative economic conditions that adversely affect the economy, housing prices, the job market and other factors that may affect the Company’s liquidity and the performance of its loan portfolios, particularly in the markets in which it operates;

41

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

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

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

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

• 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;

• 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);

• failure to identify and complete favorable acquisitions in the future or unexpected difficulties or developments related to the integration of recent or future acquisitions;

• unexpected difficulties and losses related to FDIC-assisted acquisitions, including those resulting from our loss- sharing arrangements with the FDIC;

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

• ability to raise capital on acceptable terms when needed;

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

• ability to use technology to provide products and services that will satisfy customer demands and create efficiencies in operations;

• adverse effects on our information technology systems resulting from failures, human error or tampering;

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

• the 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;

• losses incurred in connection with repurchases and indemnification payments related to mortgages;

• 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;

• the possibility that certain European Union member states will default on their debt obligations, which may affect the Company’s liquidity, financial conditions and results of operations;

• unexpected difficulties or unanticipated developments related to the Company’s strategy of de novo bank formations and openings, which typically require over 13 months of operations before becoming profitable due to the impact of organizational and overhead expenses, startup phase of generating deposits and the time lag typically involved in redeploying deposits into attractively priced loans and other higher yielding earning assets;

42

• examinations and challenges by tax authorities;

• 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 regulatory capital ratios, including as a result of further 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, including those resulting from the Dodd-Frank Act;

• restrictions upon our ability to market our products to consumers and limitations on our ability to profitably operate our mortgage business resulting from the Dodd-Frank Act;

• increased costs of compliance, heightened regulatory capital requirements and other risks associated with changes in regulation and the current regulatory environment, including the Dodd-Frank Act;

• changes in capital requirements resulting from Basel II and III initiatives;

• 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 securitization facility and credit facility;

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

• significant litigation involving the Company.

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 or on behalf of Wintrust. 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 release revisions to these forward-looking statements or reflect events or circumstances after the date of this press release. Persons are advised, however, to consult further disclosures management makes on related subjects in its reports filed with the Securities and Exchange Commission and in its press releases.

CONFERENCE CALL, WEB CAST AND REPLAY

The Company will hold a conference call at 1:00 p.m. (CT) Thursday, April 19, 2012 regarding first quarter 2012 results. Individuals interested in listening should call (877) 363-5049 and enter Conference ID #71502300. A simultaneous audio-only web cast and replay of the conference call may be accessed via the Company’s web site at (http://www.wintrust.com), Investor Relations, Investor News and Events, Presentations & Conference Calls. The text of the first quarter 2012 earnings press release will be available on the home page of the Company’s website at (http://www.wintrust.com) and at the Investor Relations, Investor News and Events, Press Releases link on its website.

43

WINTRUST FINANCIAL CORPORATION

Supplemental Financial Information

5 Quarter Trends

44

WINTRUST FINANCIAL CORPORATION - Supplemental Financial Information

Selected Financial Highlights - 5 Quarter Trends

	Three Months Ended
(Dollars in thousands, except per share data)	March 31, 2012			December 31, 2011			September 30, 2011			June 30, 2011			March 31, 2011
Selected Financial Condition Data (at end of period):
Total assets	$	16,172,018		$	15,893,808		$	15,914,804		$	14,615,897		$	14,094,294
Total loans, excluding covered loans		10,717,384			10,521,377			10,272,711			9,925,077			9,561,802
Total deposits		12,665,853			12,307,267			12,306,008			11,259,260			10,915,169
Junior subordinated debentures		249,493			249,493			249,493			249,493			249,493
Total shareholders’ equity		1,687,921			1,543,533			1,528,187			1,473,386			1,453,253
Selected Statements of Income Data:
Net interest income		125,895			124,647			118,410			108,706			109,614
Net revenue (1)		172,918			169,559			185,657			145,358			150,501
Pre-tax adjusted earnings (2)		63,688			59,362			57,524			52,860			51,032
Net income		23,210			19,221			30,202			11,750			16,402
Net income per common share – Basic	$	0.61		$	0.51		$	0.82		$	0.31		$	0.44
Net income per common share – Diluted	$	0.50		$	0.41		$	0.65		$	0.25		$	0.36
Selected Financial Ratios and Other Data:
Performance Ratios:
Net interest margin (2)		3.55	%		3.45	%		3.37	%		3.40	%		3.48	%
Non-interest income to average assets		1.19	%		1.11	%		1.72	%		1.04	%		1.18	%
Non-interest expense to average assets		2.99	%		2.94	%		2.72	%		2.76	%		2.84	%
Net overhead ratio (2) (3)		1.80	%		1.83	%		1.00	%		1.72	%		1.66	%
Net overhead ratio - pre-tax adjusted earnings (2) (3)		1.58	%		1.62	%		1.56	%		1.59	%		1.69	%
Efficiency ratio - FTE (2) (4)		68.24	%		69.99	%		57.21	%		67.22	%		65.05	%
Efficiency ratio - pre-tax adjusted earnings (2) (4)		62.31	%		64.76	%		63.69	%		62.81	%		63.56	%
Return on average assets		0.59	%		0.48	%		0.77	%		0.33	%		0.47	%
Return on average common equity		5.90	%		4.87	%		7.94	%		3.05	%		4.49	%
Average total assets	$	15,835,350		$	16,014,209		$	15,526,427		$	14,105,136		$	14,018,525
Average total shareholders’ equity		1,564,662			1,531,936			1,507,717			1,460,071			1,437,869
Average loans to average deposits ratio		88.1	%		86.6	%		85.0	%		90.9	%		91.2	%
Average loans to average deposits ratio (including covered loans)		93.5			91.9			90.7			94.8			94.2
Common Share Data at end of period:
Market price per common share	$	35.79		$	28.05		$	25.81		$	32.18		$	36.75
Book value per common share (2)	$	35.25		$	34.23		$	33.92		$	33.63		$	33.70
Tangible common book value per share (2)	$	27.57		$	26.72		$	26.47		$	26.67		$	26.65
Common shares outstanding		36,289,380			35,978,349			35,924,066			34,988,125			34,947,251
Other Data at end of period:(8)
Leverage Ratio (5)		10.5	%		9.4	%		9.6	%		10.3	%		10.3	%
Tier 1 Capital to risk-weighted assets (5)		13.0	%		12.0	%		12.0	%		12.3	%		12.7	%
Total capital to risk-weighted assets (5)		14.2	%		13.2	%		13.3	%		13.5	%		14.1	%
Tangible common equity ratio (TCE) (2) (7)		7.5	%		7.5	%		7.4	%		7.9	%		8.0	%
Tangible common equity ratio, assuming full conversion of preferred stock (2) (7)		8.6	%		7.8	%		7.7	%		8.2	%		8.4	%
Allowance for credit losses (6)	$	124,101		$	123,612		$	132,051		$	119,697		$	117,067
Non-performing loans		113,621			120,084			133,976			156,072			155,387
Allowance for credit losses to total loans (6)		1.16	%		1.17	%		1.29	%		1.21	%		1.22	%
Non-performing loans to total loans		1.06	%		1.14	%		1.30	%		1.57	%		1.63	%
Number of:
Bank subsidiaries		15			15			15			15			15
Non-bank subsidiaries		7			7			7			7			8
Banking offices		98			99			99			88			88

⁽¹⁾  Net revenue includes net interest income and non-interest income

⁽²⁾  See “Supplemental Financial Measures/Ratios” for additional information on this performance measure/ratio.

⁽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.

⁽⁴⁾ The efficiency ratio is calculated by dividing total non-interest expense by tax-equivalent net revenue (less securities gains or losses). A lower ratio indicates more efficient revenue generation.

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

⁽⁶⁾  The allowance for credit losses includes both the allowance for loan losses and the allowance for unfunded lending-related commitments, but excluding the allowance for covered loan losses.

⁽⁷⁾  Total shareholders’ equity minus preferred stock and total intangible assets divided by total assets minus total intangible assets

⁽⁸⁾  Asset quality ratios exclude covered loans.

45

WINTRUST FINANCIAL CORPORATION - SUPPLEMENTAL FINANCIAL INFORMATION

Consolidated Statements of Condition - 5 Quarter Trends

(In thousands)	(Unaudited) March 31, 2012			December 31, 2011			(Unaudited) September 30, 2011			(Unaudited) June 30, 2011			(Unaudited) March 31, 2011
Assets
Cash and due from banks	$	146,014		$	148,012		$	147,270		$	140,434		$	140,919
Federal funds sold and securities purchased under resale agreements		14,588			21,692			13,452			43,634			33,575
Interest-bearing deposits with other banks		900,755			749,287			1,101,353			990,308			946,193
Available-for-sale securities, at fair value		1,869,344			1,291,797			1,267,682			1,456,426			1,710,321
Trading account securities		1,140			2,490			297			509			2,229
Federal Home Loan Bank and Federal Reserve Bank stock, at cost		88,216			100,434			99,749			86,761			85,144
Brokerage customer receivables		31,085			27,925			27,935			29,736			25,361
Mortgage loans held-for-sale, at fair value		339,600			306,838			204,081			133,083			92,151
Mortgage loans held-for-sale, at lower of cost or market		10,728			13,686			8,955			5,881			2,335
Loans, net of unearned income, excluding covered loans		10,717,384			10,521,377			10,272,711			9,925,077			9,561,802
Covered loans		691,220			651,368			680,075			408,669			431,299
Total loans		11,408,604			11,172,745			10,952,786			10,333,746			9,993,101
Less: Allowance for loan losses		111,023			110,381			118,649			117,362			115,049
Less: Allowance for covered loan losses		17,735			12,977			12,496			7,443			4,844
Net loans		11,279,846			11,049,387			10,821,641			10,208,941			9,873,208
Premises and equipment, net		434,700			431,512			412,478			403,577			369,785
FDIC indemnification asset		263,212			344,251			379,306			110,049			124,785
Accrued interest receivable and other assets		463,394			444,912			468,711			389,634			394,292
Trade date securities receivable		—			634,047			637,112			322,091			—
Goodwill		307,295			305,468			302,369			283,301			281,940
Other intangible assets		22,101			22,070			22,413			11,532			12,056
Total assets	$	16,172,018		$	15,893,808		$	15,914,804		$	14,615,897		$	14,094,294
Liabilities and Shareholders’ Equity
Deposits:
Non-interest bearing	$	1,901,753		$	1,785,433		$	1,631,709		$	1,397,433		$	1,279,256
Interest bearing		10,764,100			10,521,834			10,674,299			9,861,827			9,635,913
Total deposits		12,665,853			12,307,267			12,306,008			11,259,260			10,915,169
Notes payable		52,639			52,822			3,004			1,000			1,000
Federal Home Loan Bank advances		466,391			474,481			474,570			423,500			423,500
Other borrowings		411,037			443,753			448,082			432,706			250,032
Secured borrowings - owed to securitization investors		428,000			600,000			600,000			600,000			600,000
Subordinated notes		35,000			35,000			40,000			40,000			50,000
Junior subordinated debentures		249,493			249,493			249,493			249,493			249,493
Trade date securities payable		—			47			73,874			2,243			10,000
Accrued interest payable and other liabilities		175,684			187,412			191,586			134,309			141,847
Total liabilities		14,484,097			14,350,275			14,386,617			13,142,511			12,641,041
Shareholders’ Equity:
Preferred stock		176,302			49,768			49,736			49,704			49,672
Common stock		36,522			35,982			35,926			34,988			34,947
Surplus		1,008,326			1,001,316			997,854			969,315			967,587
Treasury stock		(6,559	)		(112	)		(68	)		(50	)		(74	)
Retained earnings		478,160			459,457			441,268			415,297			404,580
Accumulated other comprehensive (loss) income		(4,830	)		(2,878	)		3,471			4,132			(3,459	)
Total shareholders’ equity		1,687,921			1,543,533			1,528,187			1,473,386			1,453,253
Total liabilities and shareholders’ equity	$	16,172,018		$	15,893,808		$	15,914,804		$	14,615,897		$	14,094,294

46

WINTRUST FINANCIAL CORPORATION - SUPPLEMENTAL FINANCIAL INFORMATION

Consolidated Statements of Income (Unaudited) - 5 Quarter Trends

	Three Months Ended
(In thousands, except per share data)	March 31, 2012		December 31, 2011		September 30, 2011		June 30, 2011			March 31, 2011
Interest income
Interest and fees on loans	$	143,555	$	143,514	$	140,543	$	132,338		$	136,543
Interest bearing deposits with banks		248		696		917		870			936
Federal funds sold and securities purchased under resale agreements		12		33		28		23			32
Securities		11,847		12,574		12,667		11,438			9,540
Trading account securities		9		6		15		10			13
Federal Home Loan Bank and Federal Reserve Bank stock		604		591		584		572			550
Brokerage customer receivables		211		203		197		194			166
Total interest income		156,486		157,617		154,951		145,445			147,780
Interest expense
Interest on deposits		18,030		19,685		21,893		22,404			23,956
Interest on Federal Home Loan Bank advances		3,584		4,186		4,166		4,010			3,958
Interest on notes payable and other borrowings		3,102		2,804		2,874		2,715			2,630
Interest on secured borrowings - owed to securitization investors		2,549		3,076		3,003		2,994			3,040
Interest on subordinated notes		169		176		168		194			212
Interest on junior subordinated debentures		3,157		3,043		4,437		4,422			4,370
Total interest expense		30,591		32,970		36,541		36,739			38,166
Net interest income		125,895		124,647		118,410		108,706			109,614
Provision for credit losses		17,400		18,817		29,290		29,187			25,344
Net interest income after provision for credit losses		108,495		105,830		89,120		79,519			84,270
Non-interest income
Wealth management		12,401		11,686		11,994		10,601			10,236
Mortgage banking		18,534		18,025		14,469		12,817			11,631
Service charges on deposit accounts		4,208		3,973		4,085		3,594			3,311
Gains on available-for-sale securities, net		816		309		225		1,152			106
Gain on bargain purchases		840		—		27,390		746			9,838
Trading gains (losses)		146		216		591		(30	)		(440	)
Other		10,078		10,703		8,493		7,772			6,205
Total non-interest income		47,023		44,912		67,247		36,652			40,887
Non-interest expense
Salaries and employee benefits		69,030		66,744		61,863		53,079			56,099
Equipment		5,400		5,093		4,501		4,409			4,264
Occupancy, net		8,062		7,975		7,512		6,772			6,505
Data processing		3,618		4,062		3,836		3,147			3,523
Advertising and marketing		2,006		3,207		2,119		1,440			1,614
Professional fees		3,604		3,710		5,085		4,533			3,546
Amortization of other intangible assets		1,049		1,062		970		704			689
FDIC insurance		3,357		3,244		3,100		3,281			4,518
OREO expenses, net		7,178		8,821		5,134		6,577			5,808
Other		14,455		14,850		12,201		13,264			11,543
Total non-interest expense		117,759		118,768		106,321		97,206			98,109
Income before taxes		37,759		31,974		50,046		18,965			27,048
Income tax expense		14,549		12,753		19,844		7,215			10,646
Net income	$	23,210	$	19,221	$	30,202	$	11,750		$	16,402
Preferred stock dividends and discount accretion	$	1,246	$	1,032	$	1,032	$	1,033		$	1,031
Net income applicable to common shares	$	21,964	$	18,189	$	29,170	$	10,717		$	15,371
Net income per common share - Basic	$	0.61	$	0.51	$	0.82	$	0.31		$	0.44
Net income per common share - Diluted	$	0.50	$	0.41	$	0.65	$	0.25		$	0.36
Cash dividends declared per common share	$	0.09	$	—	$	0.09	$	—		$	0.09
Weighted average common shares outstanding		36,207		35,958		35,550		34,971			34,928
Dilutive potential common shares		7,530		8,480		10,551		8,438			7,794
Average common shares and dilutive common shares		43,737		44,438		46,101		43,409			42,722

47

WINTRUST FINANCIAL CORPORATION - SUPPLEMENTAL FINANCIAL INFORMATION

Period End Loan Balances - 5 Quarter Trends

(Dollars in thousands)	March 31, 2012			December 31, 2011			September 30, 2011			June 30, 2011			March 31, 2011
Balance:
Commercial	$	2,544,456		$	2,498,313		$	2,337,098		$	2,132,436		$	1,937,561
Commercial real estate		3,585,760			3,514,261			3,465,321			3,374,668			3,356,562
Home equity		840,364			862,345			879,180			880,702			891,332
Residential real-estate		361,327			350,289			326,207			329,381			344,909
Premium finance receivables - commercial		1,512,630			1,412,454			1,417,572			1,429,436			1,337,851
Premium finance receivables - life insurance		1,693,763			1,695,225			1,671,443			1,619,668			1,539,521
Indirect consumer (1)		67,445			64,545			62,452			57,718			52,379
Consumer and other		111,639			123,945			113,438			101,068			101,687
Total loans, net of unearned income, excluding covered loans	$	10,717,384		$	10,521,377		$	10,272,711		$	9,925,077		$	9,561,802
Covered loans		691,220			651,368			680,075			408,669			431,299
Total loans, net of unearned income	$	11,408,604		$	11,172,745		$	10,952,786		$	10,333,746		$	9,993,101
Mix:
Commercial		22	%		22	%		21	%		20	%		19	%
Commercial real estate		32			31			32			33			34
Home equity		7			8			8			8			9
Residential real-estate		3			3			3			3			4
Premium finance receivables - commercial		13			13			13			14			13
Premium finance receivables - life insurance		15			15			15			16			15
Indirect consumer (1)		1			1			1			1			1
Consumer and other		1			1			1			1			1
Total loans, net of unearned income, excluding covered loans		94	%		94	%		94	%		96	%		96	%
Covered loans		6			6			6			4			4
Total loans, net of unearned income		100	%		100	%		100	%		100	%		100	%

⁽¹⁾  Includes autos, boats, snowmobiles and other indirect consumer loans.

WINTRUST FINANCIAL CORPORATION - SUPPLEMENTAL FINANCIAL INFORMATION

Period End Deposits Balances - 5 Quarter Trends

(Dollars in thousands)	March 31, 2012			December 31, 2011			September 30, 2011			June 30, 2011			March 31, 2011
Balance:
Non-interest bearing	$	1,901,753		$	1,785,433		$	1,631,709		$	1,397,433		$	1,279,256
NOW		1,756,313			1,698,778			1,633,752			1,530,068			1,526,955
Wealth Management deposits (1)		933,609			788,311			730,315			737,428			659,194
Money Market		2,306,726			2,263,253			2,190,117			1,985,661			1,844,416
Savings		943,066			888,592			867,483			736,974			749,681
Time certificates of deposit		4,824,386			4,882,900			5,252,632			4,871,696			4,855,667
Total deposits	$	12,665,853		$	12,307,267		$	12,306,008		$	11,259,260		$	10,915,169
Mix:
Non-interest bearing		15	%		15	%		13	%		12	%		12	%
NOW		14			14			13			14			14
Wealth Management deposits (1)		7			6			6			6			6
Money Market		18			18			18			18			17
Savings		8			7			7			7			7
Time certificates of deposit		38			40			43			43			44
Total deposits		100	%		100	%		100	%		100	%		100	%

⁽¹⁾  Represents deposit balances of the Company’s subsidiary banks from brokerage customers of Wayne Hummer Investments, trust and asset management customers of The Chicago Trust Company and brokerage customers from unaffiliated companies which have been placed into deposit accounts of the Banks.

48

WINTRUST FINANCIAL CORPORATION - SUPPLEMENTAL FINANCIAL INFORMATION

Net Interest Margin (Including Call Option Income) - 5 Quarter Trends

	Three Months Ended
(Dollars in thousands)	March 31, 2012			December 31, 2011			September 30, 2011			June 30, 2011			March 31, 2011
Net interest income	$	126,361		$	125,101		$	118,828		$	109,114		$	110,028
Call option income		3,123			5,377			3,436			2,287			2,470
Net interest income including call option income	$	129,484		$	130,478		$	122,264		$	111,401		$	112,498
Yield on earning assets		4.41	%		4.36	%		4.41	%		4.54	%		4.68	%
Rate on interest-bearing liabilities		1.00			1.05			1.18			1.32			1.39
Rate spread		3.41	%		3.31	%		3.23	%		3.22	%		3.29	%
Net free funds contribution		0.14			0.14			0.14			0.18			0.19
Net interest margin		3.55			3.45			3.37			3.40			3.48
Call option income		0.09			0.15			0.10			0.07			0.08
Net interest margin including call option income		3.64	%		3.60	%		3.47	%		3.47	%		3.56	%

WINTRUST FINANCIAL CORPORATION - SUPPLEMENTAL FINANCIAL INFORMATION

Net Interest Margin (Including Call Option Income - YTD Trends)

	Three Months Ended March 31,			Years Ended December 31,
(Dollars in thousands)	2012			2011			2010			2009			2008
Net interest income	$	126,361		$	463,071		$	417,564		$	314,096		$	247,054
Call option income		3,123			13,570			2,235			1,998			29,024
Net interest income including call option income	$	129,484		$	476,641		$	419,799		$	316,094		$	276,078
Yield on earning assets		4.41	%		4.49	%		4.80	%		5.07	%		5.88	%
Rate on interest-bearing liabilities		1.00			1.23			1.61			2.29			3.31
Rate spread		3.41	%		3.26	%		3.19	%		2.78	%		2.57	%
Net free funds contribution		0.14			0.16			0.18			0.23			0.24
Net interest margin		3.55			3.42			3.37			3.01			2.81
Call option income		0.09			0.10			0.02			0.02			0.33
Net interest margin including call option income		3.64	%		3.52	%		3.39	%		3.03	%		3.14	%

49

WINTRUST FINANCIAL CORPORATION - SUPPLEMENTAL FINANCIAL INFORMATION

Quarterly Average Balances - 5 Quarter Trends

	Three Months Ended
(In thousands)	March 31, 2012			December 31, 2011			September 30, 2011			June 30, 2011			March 31, 2011
Liquidity management assets	$	2,756,833		$	3,051,850		$	3,083,508		$	2,591,398		$	2,632,012
Other earning assets		30,499			28,828			28,834			28,886			27,718
Loans, net of unearned income		10,848,016			10,662,516			10,200,733			9,859,789			9,849,309
Covered loans		667,242			652,157			680,003			418,129			326,571
Total earning assets	$	14,302,590		$	14,395,351		$	13,993,078		$	12,898,202		$	12,835,610
Allowance for loan losses		(131,769	)		(137,423	)		(128,848	)		(125,537	)		(118,610	)
Cash and due from banks		143,869			130,437			140,010			135,670			152,264
Other assets		1,520,660			1,625,844			1,522,187			1,196,801			1,149,261
Total assets	$	15,835,350		$	16,014,209		$	15,526,427		$	14,105,136		$	14,018,525
Interest-bearing deposits	$	10,481,822		$	10,563,090		$	10,442,886		$	9,491,778		$	9,542,637
Federal Home Loan Bank advances		470,345			474,549			486,379			421,502			416,021
Notes payable and other borrowings		505,814			468,139			461,141			338,304			266,379
Secured borrowings - owed to securitization investors		514,923			600,000			600,000			600,000			600,000
Subordinated notes		35,000			38,370			40,000			45,440			50,000
Junior subordinated notes		249,493			249,493			249,493			249,493			249,493
Total interest-bearing liabilities	$	12,257,397		$	12,393,641		$	12,279,899		$	11,146,517		$	11,124,530
Non-interest bearing deposits		1,832,627			1,755,446			1,553,769			1,349,549			1,261,374
Other liabilities		180,664			333,186			185,042			148,999			194,752
Equity		1,564,662			1,531,936			1,507,717			1,460,071			1,437,869
Total liabilities and shareholders’ equity	$	15,835,350		$	16,014,209		$	15,526,427		$	14,105,136		$	14,018,525

WINTRUST FINANCIAL CORPORATION - SUPPLEMENTAL FINANCIAL INFORMATION

Net Interest Margin - 5 Quarter Trends

	Three Months Ended
	March 31, 2012			December 31, 2011			September 30, 2011			June 30, 2011			March 31, 2011
Yield earned on:
Liquidity management assets		1.90	%		1.85	%		1.87	%		2.04	%		1.75	%
Other earning assets		2.96			2.90			2.98			2.89			2.65
Loans, net of unearned income		4.77			4.78			4.97			5.05			5.34
Covered loans		8.98			9.20			7.54			8.06			8.78
Total earning assets		4.41	%		4.36	%		4.41	%		4.54	%		4.68	%
Rate paid on:
Interest-bearing deposits		0.69	%		0.74	%		0.83	%		0.95	%		1.02	%
Federal Home Loan Bank advances		3.06			3.50			3.40			3.82			3.86
Notes payable and other borrowings		2.47			2.38			2.47			3.22			4.00
Secured borrowings - owed to securitization investors		1.99			2.03			1.99			2.00			2.05
Subordinated notes		1.91			1.79			1.65			1.69			1.69
Junior subordinated notes		5.01			4.77			6.96			7.01			7.01
Total interest-bearing liabilities		1.00	%		1.05	%		1.18	%		1.32	%		1.39	%
Interest rate spread		3.41	%		3.31	%		3.23	%		3.22	%		3.29	%
Net free funds/contribution		0.14			0.14			0.14			0.18			0.19
Net interest income/Net interest margin		3.55	%		3.45	%		3.37	%		3.40	%		3.48	%

50

WINTRUST FINANCIAL CORPORATION - SUPPLEMENTAL FINANCIAL INFORMATION

Non-Interest Income - 5 Quarter Trends

	Three Months Ended
(In thousands)	March 31, 2012		December 31, 2011		September 30, 2011		June 30, 2011			March 31, 2011
Brokerage	$	6,322	$	5,960	$	6,108	$	6,208		$	6,325
Trust and asset management		6,079		5,726		5,886		4,393			3,911
Total wealth management		12,401		11,686		11,994		10,601			10,236
Mortgage banking		18,534		18,025		14,469		12,817			11,631
Service charges on deposit accounts		4,208		3,973		4,085		3,594			3,311
Gains on available-for-sale securities		816		309		225		1,152			106
Gain on bargain purchases		840		—		27,390		746			9,838
Trading gains (losses)		146		216		591		(30	)		(440	)
Other:
Fees from covered call options		3,123		5,377		3,436		2,287			2,470
Bank Owned Life Insurance		919		681		351		661			876
Administrative services		766		789		784		781			717
Miscellaneous		5,270		3,856		3,922		4,043			2,142
Total other income		10,078		10,703		8,493		7,772			6,205
Total Non-Interest Income	$	47,023	$	44,912	$	67,247	$	36,652		$	40,887

WINTRUST FINANCIAL CORPORATION - SUPPLEMENTAL FINANCIAL INFORMATION

Non-Interest Expense - 5 Quarter Trends

	Three Months Ended
(In thousands)	March 31, 2012		December 31, 2011		September 30, 2011		June 30, 2011		March 31, 2011
Salaries and employee benefits:
Salaries	$	37,933	$	36,676	$	36,633	$	32,008	$	33,135
Commissions and bonus		16,802		19,263		14,984		10,760		10,714
Benefits		14,295		10,805		10,246		10,311		12,250
Total salaries and employee benefits		69,030		66,744		61,863		53,079		56,099
Equipment		5,400		5,093		4,501		4,409		4,264
Occupancy, net		8,062		7,975		7,512		6,772		6,505
Data processing		3,618		4,062		3,836		3,147		3,523
Advertising and marketing		2,006		3,207		2,119		1,440		1,614
Professional fees		3,604		3,710		5,085		4,533		3,546
Amortization of other intangible assets		1,049		1,062		970		704		689
FDIC insurance		3,357		3,244		3,100		3,281		4,518
OREO expenses, net		7,178		8,821		5,134		6,577		5,808
Other:
Commissions - 3rd party brokers		1,021		872		936		991		1,030
Postage		1,423		1,322		1,102		1,170		1,078
Stationery and supplies		919		1,186		904		888		840
Miscellaneous		11,092		11,470		9,259		10,215		8,595
Total other expense		14,455		14,850		12,201		13,264		11,543
Total Non-Interest Expense	$	117,759	$	118,768	$	106,321	$	97,206	$	98,109

51

WINTRUST FINANCIAL CORPORATION - SUPPLEMENTAL FINANCIAL INFORMATION

Allowance for Credit Losses, excluding covered loans - 5 Quarter Trends

	Three Months Ended
(Dollars in thousands)	March 31, 2012			December 31, 2011			September 30, 2011			June 30, 2011			March 31, 2011
Allowance for loan losses at beginning of period	$	110,381		$	118,649		$	117,362		$	115,049		$	113,903
Provision for credit losses		15,154			16,615			28,263			28,666			24,376
Other adjustments		(238	)		—			—			—			—
Reclassification from/(to) allowance for unfunded lending-related commitments		152			171			(66	)		(317	)		2,116
Charge-offs:
Commercial		3,262			6,377			8,851			7,583			9,140
Commercial real estate		8,229			13,931			14,734			20,691			13,342
Home equity		2,590			1,876			1,071			1,300			773
Residential real estate		175			1,632			926			282			1,275
Premium finance receivables - commercial		837			1,479			1,738			1,893			1,507
Premium finance receivables - life insurance		13			—			31			214			30
Indirect consumer		51			56			24			44			120
Consumer and other		310			824			282			266			160
Total charge-offs		15,467			26,175			27,657			32,273			26,347
Recoveries:
Commercial		257			541			150			301			266
Commercial real estate		131			286			299			463			338
Home equity		162			5			32			19			8
Residential real estate		2			2			3			3			2
Premium finance receivables - commercial		277			204			159			5,375			268
Premium finance receivables - life insurance		21			—			—			12			—
Indirect consumer		30			37			75			42			66
Consumer and other		161			46			29			22			53
Total recoveries		1,041			1,121			747			6,237			1,001
Net charge-offs		(14,426	)		(25,054	)		(26,910	)		(26,036	)		(25,346	)
Allowance for loan losses at period end	$	111,023		$	110,381		$	118,649		$	117,362		$	115,049
Allowance for unfunded lending-related commitments at period end		13,078			13,231			13,402			2,335			2,018
Allowance for credit losses at period end	$	124,101		$	123,612		$	132,051		$	119,697		$	117,067
Annualized net charge-offs by category as a percentage of its own respective category’s average:
Commercial		0.49	%		0.96	%		1.60	%		1.45	%		1.85	%
Commercial real estate		0.92			1.56			1.69			2.40			1.57
Home equity		1.15			0.85			0.47			0.58			0.34
Residential real estate		0.11			1.07			0.80			0.25			0.91
Premium finance receivables - commercial		0.15			0.35			0.42			(0.99	)		0.37
Premium finance receivables - life insurance		—			—			0.01			0.05			0.01
Indirect consumer		0.13			0.12			(0.33	)		0.02			0.41
Consumer and other		0.49			2.35			0.84			0.98			0.42
Total loans, net of unearned income, excluding covered loans		0.53	%		0.93	%		1.05	%		1.06	%		1.04	%
Net charge-offs as a percentage of the provision for credit losses		95.20	%		150.79	%		95.21	%		90.83	%		103.98	%
Loans at period-end	$	10,717,384		$	10,521,377		$	10,272,711		$	9,925,077		$	9,561,802
Allowance for loan losses as a percentage of loans at period end		1.04	%		1.05	%		1.15	%		1.18	%		1.20	%
Allowance for credit losses as a percentage of loans at period end		1.16	%		1.17	%		1.29	%		1.21	%		1.22	%

52

WINTRUST FINANCIAL CORPORATION - SUPPLEMENTAL FINANCIAL INFORMATION

Non-Performing Assets, excluding covered assets - 5 Quarter Trends

(Dollars in thousands)	March 31, 2012			December 31, 2011			September 30, 2011			June 30, 2011			March 31, 2011
Loans past due greater than 90 days and still accruing:
Commercial	$	—		$	—		$	—		$	—		$	150
Commercial real-estate		73			—			1,105			—			1,997
Home equity		—			—			—			—			—
Residential real-estate		—			—			—			—			—
Premium finance receivables - commercial		4,619			5,281			4,599			4,446			6,319
Premium finance receivables - life insurance		—			—			2,413			324			—
Indirect consumer		257			314			292			284			310
Consumer and other		—			—			—			—			1
Total loans past due greater than 90 days and still accruing		4,949			5,595			8,409			5,054			8,777
Non-accrual loans:
Commercial		19,835			19,018			24,836			26,168			26,157
Commercial real-estate		62,704			66,508			69,669			89,793			94,001
Home equity		12,881			14,164			15,426			15,853			11,184
Residential real-estate		5,329			6,619			7,546			7,379			4,909
Premium finance receivables - commercial		7,650			7,755			6,942			10,309			9,550
Premium finance receivables - life insurance		—			54			349			670			342
Indirect consumer		152			138			146			89			320
Consumer and other		121			233			653			757			147
Total non-accrual loans		108,672			114,489			125,567			151,018			146,610
Total non-performing loans:
Commercial		19,835			19,018			24,836			26,168			26,307
Commercial real-estate		62,777			66,508			70,774			89,793			95,998
Home equity		12,881			14,164			15,426			15,853			11,184
Residential real-estate		5,329			6,619			7,546			7,379			4,909
Premium finance receivables - commercial		12,269			13,036			11,541			14,755			15,869
Premium finance receivables - life insurance		—			54			2,762			994			342
Indirect consumer		409			452			438			373			630
Consumer and other		121			233			653			757			148
Total non-performing loans	$	113,621		$	120,084		$	133,976		$	156,072		$	155,387
Other real estate owned		69,575			79,093			86,622			82,772			85,290
Other real estate owned - obtained in acquisition		6,661			7,430			10,302			—			—
Total non-performing assets	$	189,857		$	206,607		$	230,900		$	238,844		$	240,677
Total non-performing loans by category as a percent of its own respective category’s period-end balance:
Commercial		0.78	%		0.76	%		1.06	%		1.23	%		1.36	%
Commercial real-estate		1.75			1.89			2.04			2.66			2.86
Home equity		1.53			1.64			1.75			1.80			1.25
Residential real-estate		1.47			1.89			2.31			2.24			1.42
Premium finance receivables - commercial		0.81			0.92			0.81			1.03			1.19
Premium finance receivables - life insurance		—			—			0.17			0.06			0.02
Indirect consumer		0.61			0.70			0.70			0.65			1.20
Consumer and other		0.11			0.19			0.58			0.75			0.15
Total loans, net of unearned income		1.06	%		1.14	%		1.30	%		1.57	%		1.63	%
Total non-performing assets as a percentage of total assets		1.17	%		1.30	%		1.45	%		1.63	%		1.71	%
Allowance for loan losses as a percentage of total non-performing loans		97.71	%		91.92	%		88.56	%		75.20	%		74.04	%

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