Comerica (CMA) 8-K Up Eight Percent from Fourth Quarter 2010

Exhibit 99.1

COMERICA REPORTS FIRST QUARTER 2011 NET INCOME OF $103 MILLION,

UP EIGHT PERCENT FROM FOURTH QUARTER 2010

Loan Growth in Global Corporate Banking, Energy and Middle Market

Loan Growth Accelerates in Texas

Pending Acquisition of Sterling Bancshares on Track

DALLAS/April 19, 2011 -- Comerica Incorporated (NYSE: CMA) today reported first quarter 2011 net income of $103 million, an increase of $7 million compared to $96 million for the fourth quarter 2010.

(dollar amounts in millions, except per share data)	1st Qtr ‘11			4th Qtr ‘10			1st Qtr ‘10
Net interest income	$	395		$	405		$	415
Provision for loan losses	49			57			175
Noninterest income	207			215			194
Noninterest expenses	415			437			404
Income from continuing operations, net of tax	103			96			35
Income from discontinued operations, net of tax	—			—			17
Net income	103			96			52
Net income (loss) attributable to common shares	102			95			(71		)(a)
Diluted income (loss) per common share	0.57			0.53			(0.46		)
Tier 1 capital ratio	10.37		% (b)	10.13		%	10.38		%
Tangible common equity ratio (c)	10.43			10.54			9.68
Net interest margin	3.25			3.29			3.18

(a) After preferred stock dividends to U.S. Treasury of $123 million.

(b) March 31, 2011 ratio is estimated.

(c) See Reconciliation of Non-GAAP Financial Measures.

“We had an eight percent increase in net income in the first quarter of 2011, when compared to the fourth quarter of 2010, which was primarily driven by reduced credit costs and good control of expenses,” said Ralph W. Babb Jr., chairman and chief executive officer.  “Among the many positive and encouraging signs we saw in the first quarter were loan growth in the Global Corporate Banking, Energy and Middle Market lines of business, and an acceleration of loan growth in Texas.  These were more than offset by the continued and planned reductions in Commercial Real Estate, and a decrease in Mortgage Banker Finance.  First quarter revenue was down three percent from the fourth quarter, primarily driven by lower total average loans.

“Key credit metrics continued to move in the right direction in the first quarter.  In addition, deposit growth remained strong and our solid capital continued to position us well for future growth. We believe we are in the right markets with the right people and products to build upon this momentum going forward.

“We continue to be on track to close our pending acquisition of Sterling Bancshares in the second quarter, subject to customary closing conditions, including regulatory and Sterling shareholder approvals.  Preparations for the integration of Sterling are moving forward, as planned. We expect to complete the systems conversions in the fourth quarter, and anticipate a smooth and seamless transition. Sterling also reported first quarter 2011 earnings today, and they were consistent with our expectations. The more work we do and the better we get to know Sterling, the more confident we are in the fit of our two organizations.”

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First Quarter 2011 Highlights Compared to Fourth Quarter 2010

·Net income of $103 million, or $0.57 per fully diluted share, increased eight percent compared to the fourth quarter 2010.

·Average loans increased in the Global Corporate Banking business line ($276 million; six percent), in Energy Lending in the Specialty Businesses business line ($154 million; 12 percent) and in the Middle Market business line ($94 million; one percent).  These increases were more than offset by decreases in Mortgage Banker Finance in the Specialty Businesses business line ($535 million; 49 percent) and in the Commercial Real Estate business line ($324 million; seven percent), resulting in a decrease in average total loans of $448 million, or one percent.

·Average loans in the Texas market increased $389 million, or six percent, with increases in all major business lines other than Commercial Real Estate.

·Average core deposits increased $290 million in the first quarter 2011.

·The net interest margin of 3.25 percent decreased four basis points, primarily resulting from an increase in excess liquidity, represented by average balances deposited with the Federal Reserve Bank, and the maturity of interest rate swaps at positive spreads.

·Average earning assets increased $245 million in the first quarter 2011.

·Credit quality improvement continued in the first quarter 2011.  Net credit-related charge-offs decreased $12 million to $101 million. Internal watch list loans declined $376 million to $5.2 billion and nonaccrual loans decreased $84 million.  As a result, the provision for loan losses decreased $8 million to $49 million.

·Noninterest expenses totaled $415 million in the first quarter 2011, a decrease of $22 million from the fourth quarter 2010, primarily the result of a decrease in salaries expense of $17 million.

·The estimated Tier 1 ratio increased 24 basis points, to 10.37 percent at March 31, 2011, from December 31, 2010.

Net Interest Income and Net Interest Margin

(dollar amounts in millions)	1st Qtr ‘11			4th Qtr ‘10			1st Qtr ‘10
Net interest income	$	395		$	405		$	415
Net interest margin	3.25		%	3.29		%	3.18		%
Selected average balances:
Total earning assets	$	49,347		$	49,102		$	52,941
Total investment securities	7,311			7,112			7,382
Federal Reserve Bank deposits (excess liquidity) (a)	2,297			1,793			4,092
Total loans	39,551			39,999			41,313
Total core deposits (b)	40,186			39,896			37,236
Total noninterest-bearing deposits	15,459			15,607			14,624

(a) See Reconciliation of Non-GAAP Financial Measures.

(b) Core deposits exclude other time deposits and foreign office time deposits.

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·The $10 million decrease in net interest income in the first quarter 2011, when compared to the fourth quarter 2010, resulted primarily from two less days in the quarter and the maturity of interest rate swaps at positive spreads.

·The net interest margin of 3.25 percent declined four basis points compared to the fourth quarter 2010.  The decline in the net interest margin reflected the impact of an increase in excess liquidity and the maturity of interest rate swaps at positive spreads.

·Average earning assets increased $245 million, primarily due to increases of $504 million in Federal Reserve Bank deposits (excess liquidity) and $199 million in average investment securities available-for-sale, partially offset by a $448 million decrease in average loans.

·First quarter 2011 average core deposits increased $290 million compared to fourth quarter 2010, primarily reflecting increases in money market and NOW deposits ($495 million), partially offset by decreases in noninterest-bearing deposits ($148 million) and customer certificates of deposit ($93 million).

Noninterest Income

Noninterest income was $207 million for the first quarter 2011, compared to $215 million for the fourth quarter 2010.  The $8 million decline reflected increases in net income from principal investing and warrants ($4 million) and service charges on deposit accounts ($3 million), which were more than offset by decreases in commercial lending fees ($8 million) and bank-owned life insurance ($6 million).

Noninterest Expenses

Noninterest expenses totaled $415 million in the first quarter 2011, a decrease of $22 million from the fourth quarter 2010. The $22 million decrease in noninterest expenses was primarily due to a decrease in salaries expense ($17 million) and a one-time charge recognized in the fourth quarter 2010 related to the redemption of subordinated notes ($5 million), partially offset by an increase in employee benefits expense ($7 million).  The decrease in salaries expense primarily reflected a decrease in executive and business unit incentive expense ($8 million), a reduction in severance expense ($6 million) and the impact of two less days in the first quarter ($3 million), partially offset by an increase in share-based compensation expense ($5 million), resulting from annual share-based grants for retirement-eligible employees in the first quarter.

Credit Quality

“Overall, the first quarter results displayed a continuation of the steady improvement we have seen in our credit metrics over the last six quarters,” Babb said.  “First quarter net credit-related charge-offs decreased $12 million, with a significant decline in Commercial Real Estate, partially offset by an increase in Middle Market net charge-offs. The increase in Middle Market net charge-offs was primarily the result of several previously identified problem loans that are working their way through the collection process.  Based on our analysis of Middle Market default rates, risk rating migration patterns as well as the watch list and nonaccruals, which were stable, we believe that the increase in charge-offs this quarter is not a trend. Our credit culture has served us well.  It is one of our key strengths and has resulted in some of the best credit metrics among our peers.”

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·Net credit-related charge-offs decreased $12 million to $101 million in the first quarter 2011, from $113 million in the fourth quarter 2010. The decrease in net credit-related charge-offs primarily reflected decreases of $29 million in the Commercial Real Estate business line, $13 million in the Private Banking business line and $7 million in the Specialty Businesses business line, partially offset by an increase of $36 million in the Middle Market business line.

·Internal watch list loans declined $376 million to $5.2 billion from December 31, 2010 to March 31, 2011.

·During the first quarter 2011, $166 million of loan relationships greater than $2 million were transferred to nonaccrual status, a decrease of $14 million from the fourth quarter 2010, primarily due to a $35 million decrease in transfers from the Commercial Real Estate business line and a $10 million decrease in transfers from the Private Banking business line, partially offset by a $30 million increase in transfers from the Middle Market business line.  Of the transfers of loan relationships greater than $2 million to nonaccrual in the first quarter 2011, $101 million were from the Middle Market business line, primarily in the Midwest and Other markets, and $37 million were from the Commercial Real Estate business line in the Midwest market.

·Nonperforming assets decreased $131 million to $1.1 billion, or 2.81 percent of total loans and foreclosed property, at March 31, 2011.

·Nonaccrual loans were charged down 46 percent at March 31, 2011.

·Foreclosed property decreased $38 million to $74 million at March 31, 2011, from $112 million at December 31, 2010.

·Loans past due 90 days or more and still accruing were $72 million at March 31, 2011, an increase of $10 million compared to December 31, 2010.

·The provision for loan losses decreased $8 million, primarily due to reductions in the Commercial Real Estate, Global Corporate Banking, Private Banking and Specialty Businesses business lines, partially offset by an increase in the Middle Market business line.

·The allowance for loan losses to total loans ratio was 2.17 percent and 2.24 percent at March 31, 2011 and December 31, 2010, respectively.

(dollar amounts in millions)	1st Qtr ‘11			4th Qtr ‘10			1st Qtr ‘10
Net credit-related charge-offs	$	101		$	113		$	173
Net credit-related charge-offs/Average total loans	1.03		%	1.13		%	1.68		%
Provision for loan losses	$	49		$	57		$	175
Provision for credit losses on lending-related commitments	(3		)	(3		)	7
Total provision for credit losses	46			54			182
Nonperforming loans	1,030			1,123			1,162
Nonperforming assets (NPAs)	1,104			1,235			1,251
NPAs/Total loans and foreclosed property	2.81		%	3.06		%	3.06		%
Loans past due 90 days or more and still accruing	$	72		$	62		$	83
Allowance for loan losses	849			901			987
Allowance for credit losses on lending-related commitments (a)	32			35			44
Total allowance for credit losses	881			936			1,031
Allowance for loan losses/Total loans	2.17		%	2.24		%	2.42		%
Allowance for loan losses/Nonperforming loans	82			80			85

(a) Included in “Accrued expenses and other liabilities” on the consolidated balance sheets.

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Balance Sheet and Capital Management

Total assets and common shareholders’ equity were $55.0 billion and $5.9 billion, respectively, at March 31, 2011, compared to $53.7 billion and $5.8 billion, respectively, at December 31, 2010. There were approximately 177 million common shares outstanding at March 31, 2011.  Comerica repurchased 400,000 shares of common stock in the open market in the first quarter 2011 under the share repurchase program.

Comerica’s tangible common equity ratio was 10.43 percent at March 31, 2011, a decrease of 11 basis points from December 31, 2010. The estimated Tier 1 ratio increased 24 basis points, to 10.37 percent at March 31, 2011, from December 31, 2010.

Full-Year 2011 Outlook Compared to Full-Year 2010

For full-year 2011, management expects the following, compared to full-year 2010, based on a continuation of modest growth in the economy.  This outlook does not include any impact from the pending acquisition of Sterling Bancshares, Inc.

·A low single-digit decrease in average loans. Excluding the Commercial Real Estate business line, a low single-digit increase in average loans.

·Average earning assets of approximately $48.5 billion, reflecting lower excess liquidity in addition to a decrease in average loans.

·An average net interest margin of 3.25 percent to 3.30 percent, based on no increase in the Federal Funds rate.

·Net credit-related charge-offs between $350 million and $400 million for full-year 2011. The provision for credit losses is expected to be between $150 million and $200 million for full-year 2011.

·A low single-digit decline in noninterest income compared to 2010, primarily due to the impact of regulatory changes.

·A low single-digit increase in noninterest expenses compared to 2010, primarily due to an increase in employee benefits expense.

·Income tax expense to approximate 36 percent of income before income taxes less approximately $60 million of permanent differences related to low-income housing and bank-owned life insurance.

·Continue share repurchase program that, combined with dividend payments, results in a payout up to 50 percent of full-year earnings.

5

Business Segments

Comerica’s continuing operations are strategically aligned into three major business segments: the Business Bank, the Retail Bank, and Wealth & Institutional Management.  The Finance Division also is included as a segment. The financial results below are based on the internal business unit structure of the Corporation and methodologies in effect at March 31, 2011 and are presented on a fully taxable equivalent (FTE) basis. The accompanying narrative addresses first quarter 2011 results compared to fourth quarter 2010.

The following table presents net income (loss) by business segment.

(dollar amounts in millions)	1st Qtr ‘11					4th Qtr ‘10					1st Qtr ‘10
Business Bank	$	167		93	%	$	174		117	%	$	89		96	%
Retail Bank	(2		)	(1	)	(14		)	(10	)	(7		)	(8	)
Wealth & Institutional Management	14			8		(10		)	(7	)	11			12
	179			100	%	150			100	%	93			100	%
Finance	(76		)			(60		)			(59		)
Other (a)	—					6					18
Total	$	103				$	96				$	52

(a) Includes discontinued operations and items not directly associated with the three major business segments or the Finance Division.

Business Bank

(dollar amounts in millions)	1st Qtr ‘11			4th Qtr ‘10			1st Qtr ‘10
Net interest income (FTE)	$	341		$	341		$	341
Provision for loan losses	18			8			137
Noninterest income	77			81			76
Noninterest expenses	160			158			162
Net income	167			174			89
Net credit-related charge-offs	73			73			137
Selected average balances:
Assets	30,091			30,489			31,293
Loans	29,609			29,947			30,918
Deposits	20,084			19,892			17,750
Net interest margin	4.66		%	4.51		%	4.48		%

·Average loans decreased $338 million, reflecting increases in Global Corporate Banking, Energy Lending and Middle Market more than offset by decreases in Mortgage Banker Finance and Commercial Real Estate.

·Average deposits increased $192 million, primarily due to increases in Global Corporate Banking, Technology and Life Sciences and Mortgage Banker Finance partially offset by decreases in Middle Market, the Financial Services Division and Commercial Real Estate.

·The net interest margin of 4.66 percent increased 15 basis points, primarily due to an increase in deposit spreads and deposit balances.

·The provision for loan losses increased $10 million, primarily due to an increase in Middle Market, partially offset by decreases in Commercial Real Estate and Global Corporate Banking.

·Noninterest income decreased $4 million, primarily due to a decrease in commercial lending fees, partially offset by an increase in service charges on deposit accounts.

·Noninterest expenses increased $2 million, primarily due to an increase in other real estate expenses, partially offset by a decrease in corporate overhead expenses.

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Retail Bank

(dollar amounts in millions)	1st Qtr ‘11			4th Qtr ‘10			1st Qtr ‘10
Net interest income (FTE)	$	139		$	134		$	130
Provision for loan losses	23			29			31
Noninterest income	42			43			44
Noninterest expenses	162			169			154
Net loss	(2		)	(14		)	(7		)
Net credit-related charge-offs	23			22			26
Selected average balances:
Assets	5,558			5,647			6,106
Loans	5,106			5,192			5,599
Deposits	17,360			17,271			16,718
Net interest margin	3.25		%	3.07		%	3.18		%

·Average loans decreased $86 million, primarily reflecting declines in all business lines in the Midwest market.

·Average deposits increased $89 million, primarily due to increases in transaction and money market deposits, partially offset by a decline in customer certificates of deposit.

·The net interest margin of 3.25 percent increased 18 basis points, primarily due to increases in deposit spreads, partially offset by a decrease in loan balances.

·The provision for loan losses decreased $6 million, primarily reflecting decreases in all business lines in the Midwest and Texas markets, partially offset by increases in all business lines in the Western market.

·Noninterest expenses decreased $7 million, primarily due to a decrease in corporate overhead and nominal decreases in other expense categories.

Wealth and Institutional Management

(dollar amounts in millions)	1st Qtr ‘11			4th Qtr ‘10			1st Qtr ‘10
Net interest income (FTE)	$	44		$	42		$	42
Provision for loan losses	8			23			12
Noninterest income	64			59			60
Noninterest expenses	78			93			73
Net income (loss)	14			(10		)	11
Net credit-related charge-offs	5			18			10
Selected average balances:
Assets	4,809			4,834			4,862
Loans	4,807			4,820			4,789
Deposits	2,800			2,730			2,791
Net interest margin	3.76		%	3.43		%	3.53		%

·Average loans decreased $13 million.

·Average deposits increased $70 million, primarily due to increases in transaction and money market deposits.

·The net interest margin of 3.76 percent increased 33 basis points, primarily due to an increase in deposit spreads, partially offset by a decrease in loan balances.

·The provision for loan losses decreased $15 million, primarily reflecting decreases in the Western and Midwest markets.

·Noninterest income increased $5 million, primarily due to increases in gains on the redemption of auction-rate securities and investment banking fees.

·Noninterest expenses decreased $15 million, primarily due to decreases in salaries expense, outside processing fees and corporate overhead expenses.

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Geographic Market Segments

Comerica also provides market segment results for four primary geographic markets: Midwest, Western, Texas and Florida.  In addition to the four primary geographic markets, Other Markets and International are also reported as market segments.  The financial results below are based on methodologies in effect at March 31, 2011 and are presented on a fully taxable equivalent (FTE) basis. The accompanying narrative addresses first quarter 2011 results compared to fourth quarter 2010.

The following table presents net income (loss) by market segment.

(dollar amounts in millions)	1st Qtr ‘11					4th Qtr ‘10					1st Qtr ‘10
Midwest	$	53		30	%	$	35		23	%	$	26		28	%
Western	51			28		41			28		22			23
Texas	29			16		16			11		14			16
Florida	(4		)	(2	)	1			—		1			1
Other Markets	38			21		48			32		16			17
International	12			7		9			6		14			15
	179			100	%	150			100	%	93			100	%
Finance & Other Businesses (a)	(76		)			(54		)			(41		)
Total	$	103				$	96				$	52

(a) Includes discontinued operations and items not directly associated with the geographic markets.

Midwest Market

(dollar amounts in millions)	1st Qtr ‘11			4th Qtr ‘10			1st Qtr ‘10
Net interest income (FTE)	$	203		$	202		$	204
Provision for loan losses	34			46			80
Noninterest income	100			99			102
Noninterest expenses	188			201			186
Net income	53			35			26
Net credit-related charge-offs	46			52			55
Selected average balances:
Assets	14,307			14,506			15,208
Loans	14,104			14,219			14,964
Deposits	18,230			17,959			17,056
Net interest margin	4.49		%	4.45		%	4.84		%

·Average loans decreased $115 million, with declines in most business lines, partially offset by increases in National Dealer Services, Global Corporate Banking and Middle Market.

·Average deposits increased $271 million, primarily due to increases in Global Corporate Banking, Personal Banking, the Financial Services Division and Private Banking, partially offset by decreases in Middle Market and Small Business Banking.

·The net interest margin of 4.49 percent increased four basis points, primarily due to increases in deposit spreads and deposit balances, partially offset by a decrease in loan balances and loan spreads.

·The provision for loan losses decreased $12 million, primarily due to decreases in Global Corporate Banking, Commercial Real Estate, Private Banking and Small Business Banking, partially offset by an increase in Middle Market.

·Noninterest expenses decreased $13 million, primarily due to decreases in corporate overhead expense, litigation and operational losses and outside processing fees, partially offset by an increase in other real estate expenses.

8

Western Market

(dollar amounts in millions)	1st Qtr ‘11			4th Qtr ‘10			1st Qtr ‘10
Net interest income (FTE)	$	164		$	158		$	161
Provision for loan losses	11			11			59
Noninterest income	37			35			36
Noninterest expenses	109			109			105
Net income	51			41			22
Net credit-related charge-offs	26			43			64
Selected average balances:
Assets	12,590			12,698			13,175
Loans	12,383			12,497			12,980
Deposits	12,235			12,448			11,927
Net interest margin	5.37		%	5.01		%	5.04		%

·Average loans decreased $114 million, primarily due to decreases in Commercial Real Estate and National Dealer Services, partially offset by increases in Middle Market and Global Corporate Banking.

·Average deposits decreased $213 million, primarily due to decreases in the Financial Services Division, Middle Market and Commercial Real Estate, partially offset by increases in Technology and Life Sciences and Global Corporate Banking.

·The net interest margin of 5.37 percent increased 36 basis points, primarily due to increases in loan and deposit spreads, partially offset by a decrease in deposit balances.

·Noninterest income increased $2 million, primarily due to an increase in warrant income.

Texas Market

(dollar amounts in millions)	1st Qtr ‘11			4th Qtr ‘10			1st Qtr ‘10
Net interest income (FTE)	$	87		$	80		$	79
Provision for loan losses	4			15			17
Noninterest income	23			27			20
Noninterest expenses	61			67			60
Net income	29			16			14
Total net credit-related charge-offs	8			9			25
Selected average balances:
Assets	7,031			6,653			6,892
Loans	6,824			6,435			6,704
Deposits	5,786			5,557			4,957
Net interest margin	5.17		%	4.91		%	4.79		%

·Average loans increased $389 million, primarily due to increases in Energy Lending, Middle Market and Global Corporate Banking, partially offset by a decrease in Commercial Real Estate.

·Average deposits increased $229 million, primarily due to increases in Global Corporate Banking, Technology and Life Sciences and Energy Lending, partially offset by a decrease in Middle Market.

·The net interest margin of 5.17 percent increased 26 basis points, primarily due to increases in loan and deposit spreads and deposit balances.

·The provision for loan losses decreased $11 million, with decreases across all lines of business.

·Noninterest income decreased $4 million, primarily due to decreases in commercial lending fees and warrant income.

·Noninterest expenses decreased $6 million, primarily due to decreases in salaries expense and other real estate expenses.

9

Florida Market

(dollar amounts in millions)	1st Qtr ‘11			4th Qtr ‘10			1st Qtr ‘10
Net interest income (FTE)	$	11		$	11		$	10
Provision for loan losses	8			4			3
Noninterest income	4			3			3
Noninterest expenses	12			9			9
Net income (loss)	(4		)	1			1
Net credit-related charge-offs	8			7			10
Selected average balances:
Assets	1,553			1,587			1,576
Loans	1,580			1,612			1,576
Deposits	367			375			361
Net interest margin	2.82		%	2.64		%	2.54		%

·Average loans decreased $32 million, primarily due to decreases in Commercial Real Estate and Global Corporate Banking.

·Average deposits decreased $8 million, primarily due to a decrease in Global Corporate Banking.

·The net interest margin of 2.82 percent increased 18 basis points, primarily due to an increase in loan and deposit spreads.

·The provision for loan losses increased $4 million, primarily due to increases in Middle Market and Private Banking.

·Noninterest expenses increased $3 million, primarily due to an increase in other real estate expenses.

Conference Call and Webcast

Comerica will host a conference call to review first quarter 2011 financial results at 7 a.m. CT Tuesday, April 19, 2011. Interested parties may access the conference call by calling (800) 309-2262 or (706) 679-5261 (event ID No. 51888978). The call and supplemental financial information can also be accessed on the Internet at www.comerica.com.  A telephone replay will be available approximately two hours following the conference call through April 30, 2011. The conference call replay can be accessed by calling (800) 642-1687 or (706) 645-9291 (event ID No. 51888978). A replay of the Webcast can also be accessed via Comerica’s “Investor Relations” page at www.comerica.com.

Comerica Incorporated is a financial services company headquartered in Dallas, Texas, and strategically aligned by three major business segments: the Business Bank, the Retail Bank, and Wealth & Institutional Management. Comerica focuses on relationships and helping people and businesses be successful. In addition to Texas, Comerica Bank locations can be found in Arizona, California, Florida and Michigan, with select businesses operating in several other states, as well as in Canada and Mexico.

This press release contains both financial measures based on accounting principles generally accepted in the United States (GAAP) and non-GAAP based financial measures, which are used where management believes it to be helpful in understanding Comerica’s results of operations or financial position.  Where non-GAAP financial measures are used, the comparable GAAP financial measure, as well as the reconcilement to the comparable GAAP financial measure, can be found in this press release.  These disclosures should not be viewed as a substitute for operating results determined in accordance with GAAP, nor are they necessarily comparable to non-GAAP performance measures that may be presented by other companies.

10

Forward-looking Statements

Any statements in this news release that are not historical facts are forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. Words such as “anticipates,” “believes,” “feels,” “expects,” “estimates,” “seeks,” “strives,” “plans,” “intends,” “outlook,” “forecast,” “position,” “target,” “mission,” “assume,” “achievable,” “potential,” “strategy,” “goal,” “aspiration,” “opportunity,” “initiative,” “outcome,” “continue,” “remain,” “maintain,” “trend,” “objective,” “looks forward” and variations of such words and similar expressions, or future or conditional verbs such as “will,” “would,” “should,” “could,” “might,” “can,” “may” or similar expressions, as they relate to Comerica or its management, are intended to identify forward-looking statements. These forward-looking statements are predicated on the beliefs and assumptions of Comerica’s management based on information known to Comerica’s management as of the date of this news release and do not purport to speak as of any other date. Forward-looking statements may include descriptions of plans and objectives of Comerica’s management for future or past operations, products or services, and forecasts of Comerica’s revenue, earnings or other measures of economic performance, including statements of profitability, business segments and subsidiaries, estimates of credit trends and global stability. Such statements reflect the view of Comerica’s management as of this date with respect to future events and are subject to risks and uncertainties. Should one or more of these risks materialize or should underlying beliefs or assumptions prove incorrect, Comerica’s actual results could differ materially from those discussed.  Factors that could cause or contribute to such differences are changes in general economic, political or industry conditions and related credit and market conditions; changes in trade, monetary and fiscal policies, including the interest rate policies of the Federal Reserve Board; adverse conditions in the capital markets; the interdependence of financial service companies; changes in regulation or oversight, including the effects of recently enacted legislation, actions taken by or proposed by the U.S. Treasury, the Board of Governors of the Federal Reserve System, the Texas Department of Banking and the Federal Deposit Insurance Corporation, legislation or regulations enacted in the future, and the impact and expiration of such legislation and regulatory actions; unfavorable developments concerning credit quality; the proposed acquisition of Sterling Bancshares, Inc. (“Sterling”), or any future acquisitions; the effects of more stringent capital or liquidity requirements; declines or other changes in the businesses or industries in which Comerica has a concentration of loans, including, but not limited to, the automotive production industry and the real estate business lines; the implementation of Comerica’s strategies and business models, including the anticipated performance of any new banking centers; Comerica’s ability to utilize technology to efficiently and effectively develop, market and deliver new products and services; operational difficulties or information security problems; changes in the financial markets, including fluctuations in interest rates and their impact on deposit pricing; the entry of new competitors in Comerica’s markets; changes in customer borrowing, repayment, investment and deposit practices; management’s ability to maintain and expand customer relationships; management’s ability to retain key officers and employees; the impact of legal and regulatory proceedings; the effectiveness of methods of reducing risk exposures; the effects of war and other armed conflicts or acts of terrorism and the effects of catastrophic events including, but not limited to, hurricanes, tornadoes, earthquakes, fires, droughts and floods. Comerica cautions that the foregoing list of factors is not exclusive. For discussion of factors that may cause actual results to differ from expectations, please refer to our filings with the Securities and Exchange Commission. In particular, please refer to “Item 1A. Risk Factors” beginning on page 16 of Comerica’s Annual Report on Form 10-K for the year ended December 31, 2010. Forward-looking statements speak only as of the date they are made. Comerica does not undertake to update forward-looking statements to reflect facts, circumstances, assumptions or events that occur after the date the forward-looking statements are made. For any forward-looking statements made in this news release or in any documents, Comerica claims the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995.

11

Additional Information for Shareholders

In connection with the proposed merger transaction, Comerica has filed with the SEC a Registration Statement on Form S-4 that includes a Proxy Statement of Sterling and a Prospectus of Comerica, and Sterling mailed the definitive Proxy Statement/Prospectus to its shareholders on or about April 6, 2011. Each of Comerica and Sterling may file other relevant documents concerning the proposed transaction. SHAREHOLDERS ARE URGED TO READ THE REGISTRATION STATEMENT AND THE DEFINITIVE PROXY STATEMENT/PROSPECTUS REGARDING THE MERGER AND ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION.

A free copy of the definitive Proxy Statement/Prospectus, as well as other filings containing information about Comerica and Sterling, may be obtained at the SEC’s Internet site (http://www.sec.gov). You may be able to obtain these documents, free of charge, from Comerica at www.comerica.com under the tab “Investor Relations” and then under the heading “SEC Filings” or from Sterling by accessing Sterling’s website at www.banksterling.com under the tab “Investor Relations” and then under the heading “SEC Filings.”

Comerica and Sterling and certain of their directors and executive officers may be deemed to be participants in the solicitation of proxies from the shareholders of Sterling in connection with the proposed merger. Information about the directors and executive officers of Comerica is set forth in the proxy statement for Comerica’s 2011 annual meeting of shareholders, as filed with the SEC on a Schedule 14A on March 18, 2011. Information about the directors and executive officers of Sterling is set forth in Sterling’s Form 10-K/A filed with the SEC on April 8, 2011. Additional information regarding the interests of those participants and other persons who may be deemed participants in the transaction may be obtained by reading the above-referenced definitive Proxy Statement/Prospectus and other relevant materials filed with the SEC. Free copies of these documents may be obtained as described in the preceding paragraph.

Media Contact:	Investor Contacts:
Wayne J. Mielke	Darlene P. Persons
(214) 462-4463	(214) 462-6831
	Tracy Fralick
	(214) 462-6834

12

CONSOLIDATED FINANCIAL HIGHLIGHTS (unaudited)

Comerica Incorporated and Subsidiaries

	Three Months Ended
	March 31,			December 31,			March 31,
(in millions, except per share data)	2011			2010			2010
PER COMMON SHARE AND COMMON STOCK DATA
Diluted net income (loss)	$	0.57		$	0.53		$	(0.46	)
Cash dividends declared	0.10			0.10			0.05
Common shareholders’ equity (at period end)	33.25			32.82			32.15
Average diluted shares (in thousands)	178,425			178,266			155,155
KEY RATIOS
Return on average common shareholders’ equity	7.08		%	6.53		%	(5.61		)%
Return on average assets	0.77			0.71			0.36
Tier 1 common capital ratio (a) (b)	10.37			10.13			9.57
Tier 1 risk-based capital ratio (b)	10.37			10.13			10.38
Total risk-based capital ratio (b)	14.83			14.54			14.91
Leverage ratio (b)	11.37			11.26			11.00
Tangible common equity ratio (a)	10.43			10.54			9.68
AVERAGE BALANCES
Commercial loans	$	21,496		$	21,464		$	21,015
Real estate construction loans:
Commercial Real Estate business line (c)	1,754			1,944			2,931
Other business lines (d)	425			427			455
Commercial mortgage loans:
Commercial Real Estate business line (c)	1,978			2,016			1,908
Other business lines (d)	7,812			7,949			8,479
Residential mortgage loans	1,599			1,600			1,632
Consumer loans	2,281			2,367			2,481
Lease financing	987			1,044			1,130
International loans	1,219			1,188			1,282
Total loans	39,551			39,999			41,313
Earning assets	49,347			49,102			52,941
Total assets	53,775			53,756			57,519
Noninterest-bearing deposits	15,459			15,607			14,624
Interest-bearing core deposits	24,727			24,289			22,612
Total core deposits	40,186			39,896			37,236
Common shareholders’ equity	5,835			5,870			5,070
Total shareholders’ equity	5,835			5,870			6,864
NET INTEREST INCOME
Net interest income (fully taxable equivalent basis)	$	396		$	406		$	416
Fully taxable equivalent adjustment	1			1			1
Net interest margin (fully taxable equivalent basis)	3.25		%	3.29		%	3.18		%
CREDIT QUALITY
Nonaccrual loans	$	996		$	1,080		$	1,145
Reduced-rate loans	34			43			17
Total nonperforming loans	1,030			1,123			1,162
Foreclosed property	74			112			89
Total nonperforming assets	1,104			1,235			1,251
Loans past due 90 days or more and still accruing	72			62			83
Gross loan charge-offs	123			140			184
Loan recoveries	22			27			11
Net loan charge-offs	101			113			173
Lending-related commitment charge-offs	—			—			—
Total net credit-related charge-offs	101			113			173
Allowance for loan losses	849			901			987
Allowance for credit losses on lending-related commitments	32			35			44
Total allowance for credit losses	881			936			1,031
Allowance for loan losses as a percentage of total loans	2.17		%	2.24		%	2.42		%
Net loan charge-offs as a percentage of average total loans	1.03			1.13			1.68
Net credit-related charge-offs as a percentage of average total loans	1.03			1.13			1.68
Nonperforming assets as a percentage of total loans and foreclosed property	2.81			3.06			3.06
Allowance for loan losses as a percentage of total nonperforming loans	82			80			85

(a) See Reconciliation of Non-GAAP Financial Measures.

(b) March 31, 2011 ratios are estimated.

(c) Primarily loans to real estate investors and developers.

(d) Primarily loans secured by owner-occupied real estate.

13

CONSOLIDATED BALANCE SHEETS

Comerica Incorporated and Subsidiaries

	March 31,			December 31,			March 31,
(in millions, except share data)	2011			2010			2010
	(unaudited)						(unaudited)
ASSETS
Cash and due from banks	$	875		$	668		$	769
Interest-bearing deposits with banks	3,570			1,415			3,860
Other short-term investments	154			141			165
Investment securities available-for-sale	7,406			7,560			7,346
Commercial loans	21,360			22,145			20,756
Real estate construction loans	2,023			2,253			3,202
Commercial mortgage loans	9,697			9,767			10,358
Residential mortgage loans	1,550			1,619			1,631
Consumer loans	2,262			2,311			2,472
Lease financing	958			1,009			1,120
International loans	1,326			1,132			1,306
Total loans	39,176			40,236			40,845
Less allowance for loan losses	(849		)	(901		)	(987		)
Net loans	38,327			39,335			39,858
Premises and equipment	637			630			637
Customers’ liability on acceptances outstanding	14			9			21
Accrued income and other assets	4,034			3,909			4,450
Total assets	$	55,017		$	53,667		$	57,106
LIABILITIES AND SHAREHOLDERS’ EQUITY
Noninterest-bearing deposits	$	16,357		$	15,538		$	15,290
Money market and NOW deposits	17,888			17,622			16,009
Savings deposits	1,457			1,397			1,462
Customer certificates of deposit	5,672			5,482			5,979
Other time deposits	—			—			814
Foreign office time deposits	499			432			412
Total interest-bearing deposits	25,516			24,933			24,676
Total deposits	41,873			40,471			39,966
Short-term borrowings	61			130			489
Acceptances outstanding	14			9			21
Accrued expenses and other liabilities	1,076			1,126			1,047
Medium- and long-term debt	6,116			6,138			9,915
Total liabilities	49,140			47,874			51,438
Common stock - $5 par value:
Authorized - 325,000,000 shares
Issued - 203,878,110 shares	1,019			1,019			1,019
Capital surplus	1,464			1,481			1,468
Accumulated other comprehensive loss	(382		)	(389		)	(303		)
Retained earnings	5,317			5,247			5,064
Less cost of common stock in treasury - 27,103,941 shares at 3/31/11, 27,342,518 shares at 12/31/10, and 27,575,283 shares at 3/31/10	(1,541		)	(1,565		)	(1,580		)
Total shareholders’ equity	5,877			5,793			5,668
Total liabilities and shareholders’ equity	$	55,017		$	53,667		$	57,106

14

CONSOLIDATED STATEMENTS OF INCOME (unaudited)

Comerica Incorporated and Subsidiaries

	Three Months Ended
	March 31,
(in millions, except per share data)	2011			2010
INTEREST INCOME
Interest and fees on loans	$	375		$	412
Interest on investment securities	57			61
Interest on short-term investments	2			3
Total interest income	434			476
INTEREST EXPENSE
Interest on deposits	22			35
Interest on short-term borrowings	—			—
Interest on medium- and long-term debt	17			26
Total interest expense	39			61
Net interest income	395			415
Provision for loan losses	49			175
Net interest income after provision for loan losses	346			240
NONINTEREST INCOME
Service charges on deposit accounts	52			56
Fiduciary income	39			39
Commercial lending fees	21			22
Letter of credit fees	18			18
Card fees	15			13
Foreign exchange income	9			10
Bank-owned life insurance	8			8
Brokerage fees	6			6
Net securities gains	2			2
Other noninterest income	37			20
Total noninterest income	207			194
NONINTEREST EXPENSES
Salaries	188			169
Employee benefits	50			44
Total salaries and employee benefits	238			213
Net occupancy expense	40			41
Equipment expense	15			17
Outside processing fee expense	24			23
Software expense	23			22
FDIC insurance expense	15			17
Legal fees	9			8
Advertising expense	7			8
Other real estate expense	8			12
Litigation and operational losses	3			1
Provision for credit losses on lending-related commitments	(3		)	7
Other noninterest expenses	36			35
Total noninterest expenses	415			404
Income from continuing operations before income taxes	138			30
Provision (benefit) for income taxes	35			(5		)
Income from continuing operations	103			35
Income from discontinued operations, net of tax	—			17
NET INCOME	103			52
Less:
Preferred stock dividends	—			123
Income allocated to participating securities	1			—
Net income (loss) attributable to common shares	$	102		$	(71	)
Basic earnings per common share:
Income (loss) from continuing operations	$	0.58		$	(0.57	)
Net income (loss)	0.58			(0.46		)
Diluted earnings per common share:
Income (loss) from continuing operations	0.57			(0.57		)
Net income (loss)	0.57			(0.46		)
Cash dividends declared on common stock	18			9
Cash dividends declared per common share	0.10			0.05

15

CONSOLIDATED QUARTERLY STATEMENTS OF INCOME (unaudited)

Comerica Incorporated and Subsidiaries

	First			Fourth			Third			Second		First			First Quarter 2011 Compared To:
	Quarter			Quarter			Quarter			Quarter		Quarter			Fourth Quarter 2010					First Quarter 2010
(in millions, except per share data)	2011			2010			2010			2010		2010			Amount			Percent		Amount			Percent
INTEREST INCOME
Interest and fees on loans	$	375		$	394		$	399		$	412	$	412		$	(19	)	(5	)%	$	(37	)	(9	)%
Interest on investment securities	57			49			55			61		61			8			16		(4		)	(7	)
Interest on short-term investments	2			2			2			3		3			—			44		(1		)	(25	)
Total interest income	434			445			456			476		476			(11		)	(2	)	(42		)	(9	)
INTEREST EXPENSE
Interest on deposits	22			24			27			29		35			(2		)	(8	)	(13		)	(36	)
Interest on short-term borrowings	—			1			—			—		—			(1		)	(39	)	—			8
Interest on medium- and long-term debt	17			15			25			25		26			2			5		(9		)	(35	)
Total interest expense	39			40			52			54		61			(1		)	(3	)	(22		)	(35	)
Net interest income	395			405			404			422		415			(10		)	(2	)	(20		)	(5	)
Provision for loan losses	49			57			122			126		175			(8		)	(14	)	(126		)	(72	)
Net interest income after provision for loan losses	346			348			282			296		240			(2		)	—		106			44
NONINTEREST INCOME
Service charges on deposit accounts	52			49			51			52		56			3			6		(4		)	(7	)
Fiduciary income	39			39			38			38		39			—			—		—			—
Commercial lending fees	21			29			22			22		22			(8		)	(29	)	(1		)	(3	)
Letter of credit fees	18			20			19			19		18			(2		)	(6	)	—			1
Card fees	15			15			15			15		13			—			(5	)	2			10
Foreign exchange income	9			11			8			10		10			(2		)	(16	)	(1		)	(7	)
Bank-owned life insurance	8			14			9			9		8			(6		)	(41	)	—			1
Brokerage fees	6			7			6			6		6			(1		)	(8	)	—			7
Net securities gains	2			—			—			1		2			2			N/M		—			14
Other noninterest income	37			31			18			22		20			6			18		17			82
Total noninterest income	207			215			186			194		194			(8		)	(4	)	13			7
NONINTEREST EXPENSES
Salaries	188			205			187			179		169			(17		)	(8	)	19			11
Employee benefits	50			43			47			45		44			7			16		6			15
Total salaries and employee benefits	238			248			234			224		213			(10		)	(4	)	25			12
Net occupancy expense	40			42			40			39		41			(2		)	(3	)	(1		)	(5	)
Equipment expense	15			16			15			15		17			(1		)	(4	)	(2		)	(6	)
Outside processing fee expense	24			27			23			23		23			(3		)	(13	)	1			4
Software expense	23			23			22			22		22			—			(7	)	1			2
FDIC insurance expense	15			15			14			16		17			—			3		(2		)	(11	)
Legal fees	9			9			9			9		8			—			(1	)	1			—
Advertising expense	7			8			7			7		8			(1		)	(8	)	(1		)	(5	)
Other real estate expense	8			5			7			5		12			3			91		(4		)	(28	)
Litigation and operational losses	3			6			2			2		1			(3		)	(51	)	2			N/M
Provision for credit losses on lending-related commitments	(3		)	(3		)	(6		)	—		7			—			34		(10		)	N/M
Other noninterest expenses	36			41			35			35		35			(5		)	(14	)	1			1
Total noninterest expenses	415			437			402			397		404			(22		)	(5	)	11			3
Income from continuing operations before income taxes	138			126			66			93		30			12			10		108			N/M
Provision (benefit) for income taxes	35			30			7			23		(5		)	5			17		40			N/M
Income from continuing operations	103			96			59			70		35			7			8		68			N/M
Income from discontinued operations, net of tax	—			—			—			—		17			—			—		(17		)	N/M
NET INCOME	103			96			59			70		52			7			8		51			99
Less:
Preferred stock dividends	—			—			—			—		123			—			—		(123		)	N/M
Income allocated to participating securities	1			1			—			1		—			—			25		1			N/M
Net income (loss) attributable to common shares	$	102		$	95		$	59		$	69	$	(71	)	$	7		8	%	$	173		N/M	%
Basic earnings per common share:
Income (loss) from continuing operations	$	0.58		$	0.54		$	0.34		$	0.40	$	(0.57	)	$	0.04		7	%	$	1.15		N/M	%
Net income (loss)	0.58			0.54			0.34			0.40		(0.46		)	0.04			7		1.04			N/M
Diluted earnings per common share:
Income (loss) from continuing operations	0.57			0.53			0.33			0.39		(0.57		)	0.04			8		1.14			N/M
Net income (loss)	0.57			0.53			0.33			0.39		(0.46		)	0.04			8		1.03			N/M
Cash dividends declared on common stock	18			18			9			8		9			—			—		9			N/M
Cash dividends declared per common share	0.10			0.10			0.05			0.05		0.05			—			—		0.05			N/M

N/M - Not meaningful

16

ANALYSIS OF THE ALLOWANCE FOR LOAN LOSSES (unaudited)

Comerica Incorporated and Subsidiaries

	2011			2010
(in millions)	1st Qtr			4th Qtr			3rd Qtr			2nd Qtr			1st Qtr
Balance at beginning of period	$	901		$	957		$	967		$	987		$	985
Loan charge-offs:
Commercial	65			43			38			65			49
Real estate construction:
Commercial Real Estate business line (a)	8			34			40			30			71
Other business lines (b)	1			—			1			—			3
Total real estate construction	9			34			41			30			74
Commercial mortgage:
Commercial Real Estate business line (a)	9			9			16			12			16
Other business lines (b)	25			34			40			36			28
Total commercial mortgage	34			43			56			48			44
Residential mortgage	2			5			2			5			2
Consumer	8			15			7			9			8
Lease financing	—			—			—			1			—
International	5			—			1			—			7
Total loan charge-offs	123			140			145			158			184
Recoveries on loans previously charged-off:
Commercial	4			7			7			4			7
Real estate construction	2			3			1			6			1
Commercial mortgage	9			10			2			1			3
Residential mortgage	—			1			—			—			—
Consumer	1			2			1			1			—
Lease financing	5			4			1			—			—
International	1			—			1			—			—
Total recoveries	22			27			13			12			11
Net loan charge-offs	101			113			132			146			173
Provision for loan losses	49			57			122			126			175
Balance at end of period	$	849		$	901		$	957		$	967		$	987
Allowance for loan losses as a percentage of total loans	2.17		%	2.24		%	2.38		%	2.38		%	2.42		%
Net loan charge-offs as a percentage of average total loans	1.03			1.13			1.32			1.44			1.68
Net credit-related charge-offs as a percentage of average total loans	1.03			1.13			1.32			1.44			1.68

(a)Primarily charge-offs of loans to real estate investors and developers.

(b)Primarily charge-offs of loans secured by owner-occupied real estate.

ANALYSIS OF THE ALLOWANCE FOR CREDIT LOSSES ON LENDING-RELATED COMMITMENTS (unaudited)

Comerica Incorporated and Subsidiaries

	2011			2010
(in millions)	1st Qtr			4th Qtr			3rd Qtr			2nd Qtr		1st Qtr
Balance at beginning of period	$	35		$	38		$	44		$	44	$	37
Add: Provision for credit losses on lending-related commitments	(3		)	(3		)	(6		)	—		7
Balance at end of period	$	32		$	35		$	38		$	44	$	44
Unfunded lending-related commitments sold	$	2		$	—		$	—		$	2	$	—

17

NONPERFORMING ASSETS (unaudited)

Comerica Incorporated and Subsidiaries

	2011			2010
(in millions)	1st Qtr			4th Qtr			3rd Qtr			2nd Qtr			1st Qtr
SUMMARY OF NONPERFORMING ASSETS AND PAST DUE LOANS
Nonaccrual loans:
Business loans:
Commercial	$	226		$	252		$	258		$	239		$	209
Real estate construction:
Commercial Real Estate business line (a)	195			259			362			385			516
Other business lines (b)	3			4			4			4			3
Total real estate construction	198			263			366			389			519
Commercial mortgage:
Commercial Real Estate business line (a)	197			181			153			135			105
Other business lines (b)	293			302			304			257			226
Total commercial mortgage	490			483			457			392			331
Lease financing	7			7			10			11			11
International	4			2			2			3			4
Total nonaccrual business loans	925			1,007			1,093			1,034			1,074
Retail loans:
Residential mortgage	58			55			59			53			58
Consumer:
Home equity	6			5			5			7			8
Other consumer	7			13			6			4			5
Total consumer	13			18			11			11			13
Total nonaccrual retail loans	71			73			70			64			71
Total nonaccrual loans	996			1,080			1,163			1,098			1,145
Reduced-rate loans	34			43			28			23			17
Total nonperforming loans	1,030			1,123			1,191			1,121			1,162
Foreclosed property	74			112			120			93			89
Total nonperforming assets	$	1,104		$	1,235		$	1,311		$	1,214		$	1,251
Nonperforming loans as a percentage of total loans	2.63		%	2.79		%	2.96		%	2.76		%	2.85		%
Nonperforming assets as a percentage of total loans and foreclosed property	2.81			3.06			3.24			2.98			3.06
Allowance for loan losses as a percentage of total nonperforming loans	82			80			80			86			85
Loans past due 90 days or more and still accruing	$	72		$	62		$	104		$	115		$	83
ANALYSIS OF NONACCRUAL LOANS
Nonaccrual loans at beginning of period	$	1,080		$	1,163		$	1,098		$	1,145		$	1,165
Loans transferred to nonaccrual (c)	166			180			294			199			245
Nonaccrual business loan gross charge-offs (d)	(111		)	(120		)	(136		)	(143		)	(174		)
Loans transferred to accrual status (c)	(4		)	(4		)	(10		)	—			—
Nonaccrual business loans sold (e)	(60		)	(41		)	(12		)	(47		)	(44		)
Payments/Other (f)	(75		)	(98		)	(71		)	(56		)	(47		)
Nonaccrual loans at end of period	$	996		$	1,080		$	1,163		$	1,098		$	1,145

(a)  Primarily loans to real estate investors and developers.

(b) Primarily loans secured by owner-occupied real estate.

(c)  Based on an analysis of nonaccrual loans with book balances greater than $2 million.

(d) Analysis of gross loan charge-offs:

Nonaccrual business loans	$	111	$	120	$	136	$	143	$	174
Performing watch list loans	2		—		—		1		—
Consumer and residential mortgage loans	10		20		9		14		10
Total gross loan charge-offs	$	123	$	140	$	145	$	158	$	184
(e) Analysis of loans sold:
Nonaccrual business loans	$	60	$	41	$	12	$	47	$	44
Performing watch list loans	35		29		7		15		12
Total loans sold	$	95	$	70	$	19	$	62	$	56

(f)  Includes net changes related to nonaccrual loans with balances less than $2 million, payments on nonaccrual loans with book balances greater than $2 million and transfers of nonaccrual loans to foreclosed property.  Excludes business loan gross charge-offs and business nonaccrual loans sold.

18

ANALYSIS OF NET INTEREST INCOME (FTE) (unaudited)

Comerica Incorporated and Subsidiaries

	Three Months Ended
	March 31, 2011							December 31, 2010							March 31, 2010
	Average					Average		Average					Average		Average					Average
(dollar amounts in millions)	Balance			Interest		Rate		Balance			Interest		Rate		Balance			Interest		Rate
Commercial loans	$	21,496		$	200	3.76	%	$	21,464		$	206	3.80	%	$	21,015		$	205	3.96	%
Real estate construction loans	2,179			19		3.51		2,371			21		3.50		3,386			25		2.95
Commercial mortgage loans	9,790			95		3.95		9,965			100		3.97		10,387			107		4.18
Residential mortgage loans	1,599			21		5.24		1,600			20		5.11		1,632			22		5.41
Consumer loans	2,281			19		3.42		2,367			21		3.50		2,481			22		3.58
Lease financing	987			9		3.62		1,044			11		4.36		1,130			11		3.75
International loans	1,219			12		3.87		1,188			11		3.86		1,282			12		3.93
Business loan swap income	—			1		—		—			4		—		—			8		—
Total loans	39,551			376		3.85		39,999			394		3.92		41,313			412		4.04
Auction-rate securities available-for-sale	554			1		0.88		617			2		0.92		879			2		0.93
Other investment securities available-for-sale	6,757			56		3.37		6,495			48		3.07		6,503			60		3.72
Total investment securities available-for-sale	7,311			57		3.17		7,112			50		2.87		7,382			62		3.38
Federal funds sold and securities purchased under agreements to resell	3			—		0.32		8			—		0.32		—			—		—
Interest-bearing deposits with banks (a)	2,354			1		0.26		1,856			1		0.25		4,122			2		0.25
Other short-term investments	128			1		2.68		127			1		1.40		124			1		1.75
Total earning assets	49,347			435		3.57		49,102			446		3.62		52,941			477		3.65
Cash and due from banks	884							871							788
Allowance for loan losses	(908		)					(979		)					(1,058		)
Accrued income and other assets	4,452							4,762							4,848
Total assets	$	53,775						$	53,756						$	57,519
Money market and NOW deposits	$	17,797		12		0.26		$	17,302		13		0.29		$	15,055		12		0.32
Savings deposits	1,421			—		0.09		1,385			—		0.09		1,384			—		0.07
Customer certificates of deposit	5,509			10		0.76		5,602			11		0.80		6,173			15		1.02
Total interest-bearing core deposits	24,727			22		0.36		24,289			24		0.39		22,612			27		0.50
Other time deposits	—			—		—		—			—		—		877			8		3.53
Foreign office time deposits	412			—		0.49		460			—		0.45		458			—		0.21
Total interest-bearing deposits	25,139			22		0.37		24,749			24		0.40		23,947			35		0.60
Short-term borrowings	94			—		0.31		174			1		0.27		234			—		0.11
Medium- and long-term debt	6,128			17		1.10		6,201			15		1.02		10,775			26		0.95
Total interest-bearing sources	31,361			39		0.51		31,124			40		0.52		34,956			61		0.71
Noninterest-bearing deposits	15,459							15,607							14,624
Accrued expenses and other liabilities	1,120							1,155							1,075
Total shareholders’ equity	5,835							5,870							6,864
Total liabilities and shareholders’ equity	$	53,775						$	53,756						$	57,519
Net interest income/rate spread (FTE)				$	396	3.06					$	406	3.10					$	416	2.94
FTE adjustment				$	1						$	1						$	1
Impact of net noninterest-bearing sources of funds						0.19							0.19							0.24
Net interest margin (as a percentage of average earning assets) (FTE) (a)						3.25	%						3.29	%						3.18	%

(a)Excess liquidity, represented by average balances deposited with the Federal Reserve Bank, reduced the net interest margin by 14 basis points in the first quarter of 2011, and by 12 points and 24 basis points in the fourth and first quarters of 2010, respectively.  Excluding excess liquidity, the net interest margin would have been 3.39%, 3.41% and 3.42% in each respective period.  See Reconciliation of Non-GAAP Financial Measures.

19

CONSOLIDATED STATISTICAL DATA (unaudited)

Comerica Incorporated and Subsidiaries

	March 31,			December 31,			September 30,			June 30,			March 31,
(in millions, except per share data)	2011			2010			2010			2010			2010
Commercial loans:
Floor plan	$	1,893		$	2,017		$	1,693		$	1,586		$	1,351
Other	19,467			20,128			19,739			19,565			19,405
Total commercial loans	21,360			22,145			21,432			21,151			20,756
Real estate construction loans:
Commercial Real Estate business line (a)	1,606			1,826			2,023			2,345			2,754
Other business lines (b)	417			427			421			429			448
Total real estate construction loans	2,023			2,253			2,444			2,774			3,202
Commercial mortgage loans:
Commercial Real Estate business line (a)	1,918			1,937			2,091			2,035			1,944
Other business lines (b)	7,779			7,830			8,089			8,283			8,414
Total commercial mortgage loans	9,697			9,767			10,180			10,318			10,358
Residential mortgage loans	1,550			1,619			1,586			1,606			1,631
Consumer loans:
Home equity	1,661			1,704			1,736			1,761			1,782
Other consumer	601			607			667			682			690
Total consumer loans	2,262			2,311			2,403			2,443			2,472
Lease financing	958			1,009			1,053			1,084			1,120
International loans	1,326			1,132			1,182			1,226			1,306
Total loans	$	39,176		$	40,236		$	40,280		$	40,602		$	40,845
Goodwill	$	150		$	150		$	150		$	150		$	150
Loan servicing rights	4			5			5			6			6
Tier 1 common capital ratio (c) (d)	10.37		%	10.13		%	9.96		%	9.81		%	9.57		%
Tier 1 risk-based capital ratio (d)	10.37			10.13			9.96			10.64			10.38
Total risk-based capital ratio (d)	14.83			14.54			14.37			15.03			14.91
Leverage ratio (d)	11.37			11.26			10.91			11.36			11.00
Tangible common equity ratio (c)	10.43			10.54			10.39			10.11			9.68
Book value per common share	$	33.25		$	32.82		$	33.19		$	32.85		$	32.15
Market value per share for the quarter:
High	43.53			43.44			40.21			45.85			39.36
Low	36.20			34.43			33.11			35.44			29.68
Close	36.72			42.24			37.15			36.83			38.04
Quarterly ratios:
Return on average common shareholders’ equity	7.08		%	6.53		%	4.07		%	4.89		%	(5.61		)%
Return on average assets	0.77			0.71			0.43			0.50			0.36
Efficiency ratio	69.05			70.38			67.88			64.47			66.45
Number of banking centers	445			444			441			437			449
Number of employees - full time equivalent	8,955			9,001			9,075			9,107			9,215

(a)Primarily loans to real estate investors and developers.

(b)Primarily loans secured by owner-occupied real estate.

(c)See Reconciliation of Non-GAAP Financial Measures.

(d)March 31, 2011 ratios are estimated.

20

PARENT COMPANY ONLY BALANCE SHEETS (unaudited)

Comerica Incorporated

	March 31,			December 31,			March 31,
(in millions, except share data)	2011			2010			2010
ASSETS
Cash and due from subsidiary bank	$	7		$	—		$	14
Short-term investments with subsidiary bank	334			327			651
Other short-term investments	90			86			86
Investment in subsidiaries, principally banks	6,033			5,957			5,818
Premises and equipment	3			4			4
Other assets	174			181			206
Total assets	$	6,641		$	6,555		$	6,779
LIABILITIES AND SHAREHOLDERS’ EQUITY
Medium- and long-term debt	$	631		$	635		$	989
Other liabilities	133			127			122
Total liabilities	764			762			1,111
Common stock - $5 par value:
Authorized - 325,000,000 shares
Issued - 203,878,110 shares	1,019			1,019			1,019
Capital surplus	1,464			1,481			1,468
Accumulated other comprehensive loss	(382		)	(389		)	(303		)
Retained earnings	5,317			5,247			5,064
Less cost of common stock in treasury - 27,103,941 shares at 3/31/11, 27,342,518 shares at 12/31/10, and 27,575,283 shares at 3/31/10	(1,541		)	(1,565		)	(1,580		)
Total shareholders’ equity	5,877			5,793			5,668
Total liabilities and shareholders’ equity	$	6,641		$	6,555		$	6,779

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY (unaudited)

Comerica Incorporated and Subsidiaries

											Accumulated
				Common Stock							Other									Total
	Preferred			Shares				Capital			Comprehensive			Retained			Treasury			Shareholders’
(in millions, except per share data)	Stock			Outstanding		Amount		Surplus			Loss			Earnings			Stock			Equity
BALANCE AT DECEMBER 31, 2009	$	2,151		151.2		$	894	$	740		$	(336	)	$	5,161		$	(1,581	)	$	7,029
Net income	—			—		—		—			—			52			—			52
Other comprehensive income, net of tax	—			—		—		—			33			—			—			33
Total comprehensive income																				85
Cash dividends declared on preferred stock	—			—		—		—			—			(38		)	—			(38		)
Cash dividends declared on common stock ($0.05 per share)	—			—		—		—			—			(9		)	—			(9		)
Purchase of common stock	—			—		—		—			—			—			(2		)	(2		)
Issuance of common stock	—			25.1		125		724			—			—			—			849
Redemption of preferred stock	(2,250		)	—		—		—			—			—			—			(2,250		)
Redemption discount accretion on preferred stock	94			—		—		—			—			(94		)	—			—
Accretion of discount on preferred stock	5			—		—		—			—			(5		)	—			—
Net issuance of common stock under employee stock plans	—			—		—		—			—			(3		)	3			—
Share-based compensation	—			—		—		4			—			—			—			4
BALANCE AT MARCH 31, 2010	$	—		176.3		$	1,019	$	1,468		$	(303	)	$	5,064		$	(1,580	)	$	5,668
BALANCE AT DECEMBER 31, 2010	$	—		176.5		$	1,019	$	1,481		$	(389	)	$	5,247		$	(1,565	)	$	5,793
Net income	—			—		—		—			—			103			—			103
Other comprehensive income, net of tax	—			—		—		—			7			—			—			7
Total comprehensive income																				110
Cash dividends declared on common stock ($0.10 per share)	—			—		—		—			—			(18		)	—			(18		)
Purchase of common stock	—			(0.5	)	—		—			—			—			(21		)	(21		)
Net issuance of common stock under employee stock plans	—			0.8		—		(30		)	—			(15		)	45			—
Share-based compensation	—			—		—		13			—			—			—			13
BALANCE AT MARCH 31, 2011	$	—		176.8		$	1,019	$	1,464		$	(382	)	$	5,317		$	(1,541	)	$	5,877

21

BUSINESS SEGMENT FINANCIAL RESULTS (unaudited)

Comerica Incorporated and Subsidiaries

							Wealth &
(dollar amounts in millions)	Business			Retail			Institutional
Three Months Ended March 31, 2011	Bank			Bank			Management			Finance			Other		Total
Earnings summary:
Net interest income (expense) (FTE)	$	341		$	139		$	44		$	(135	)	$	7	$	396
Provision for loan losses	18			23			8			—			—		49
Noninterest income	77			42			64			16			8		207
Noninterest expenses	160			162			78			3			12		415
Provision (benefit) for income taxes (FTE)	73			(2		)	8			(46		)	3		36
Net income (loss)	$	167		$	(2	)	$	14		$	(76	)	$	—	$	103
Net credit-related charge-offs	$	73		$	23		$	5		$	—		$	—	$	101
Selected average balances:
Assets	$	30,091		$	5,558		$	4,809		$	9,314		$	4,003	$	53,775
Loans	29,609			5,106			4,807			22			7		39,551
Deposits	20,084			17,360			2,800			249			105		40,598
Statistical data:
Return on average assets (a)	2.22		%	(0.05		)%	1.14		%	N/M			N/M		0.77		%
Net interest margin (b)	4.66			3.25			3.76			N/M			N/M		3.25
Efficiency ratio	38.14			89.19			74.38			N/M			N/M		69.05

							Wealth &
	Business			Retail			Institutional
Three Months Ended December 31, 2010	Bank			Bank			Management			Finance			Other			Total
Earnings summary:
Net interest income (expense) (FTE)	$	341		$	134		$	42		$	(111	)	$	—		$	406
Provision for loan losses	8			29			23			—			(3		)	57
Noninterest income	81			43			59			23			9			215
Noninterest expenses	158			169			93			12			5			437
Provision (benefit) for income taxes (FTE)	82			(7		)	(5		)	(40		)	1			31
Net income (loss)	$	174		$	(14	)	$	(10	)	$	(60	)	$	6		$	96
Net credit-related charge-offs	$	73		$	22		$	18		$	—		$	—		$	113
Selected average balances:
Assets	$	30,489		$	5,647		$	4,834		$	9,228		$	3,558		$	53,756
Loans	29,947			5,192			4,820			28			12			39,999
Deposits	19,892			17,271			2,730			310			153			40,356
Statistical data:
Return on average assets (a)	2.29		%	(0.32		)%	(0.82		)%	N/M			N/M			0.71		%
Net interest margin (b)	4.51			3.07			3.43			N/M			N/M			3.29
Efficiency ratio	37.25			95.17			92.86			N/M			N/M			70.38

							Wealth &
	Business			Retail			Institutional
Three Months Ended March 31, 2010	Bank			Bank			Management			Finance			Other			Total
Earnings summary:
Net interest income (expense) (FTE)	$	341		$	130		$	42		$	(105	)	$	8		$	416
Provision for loan losses	137			31			12			—			(5		)	175
Noninterest income	76			44			60			12			2			194
Noninterest expenses	162			154			73			2			13			404
Provision (benefit) for income taxes (FTE)	29			(4		)	6			(36		)	1			(4		)
Income from discontinued operations, net of tax	—			—			—			—			17			17
Net income (loss)	$	89		$	(7	)	$	11		$	(59	)	$	18		$	52
Net credit-related charge-offs	$	137		$	26		$	10		$	—		$	—		$	173
Selected average balances:
Assets	$	31,293		$	6,106		$	4,862		$	9,416		$	5,842		$	57,519
Loans	30,918			5,599			4,789			9			(2		)	41,313
Deposits	17,750			16,718			2,791			1,218			94			38,571
Statistical data:
Return on average assets (a)	1.13		%	(0.17		)%	0.92		%	N/M			N/M			0.36		%
Net interest margin (b)	4.48			3.18			3.53			N/M			N/M			3.18
Efficiency ratio	38.78			88.44			73.18			N/M			N/M			66.45

(a) Return on average assets is calculated based on the greater of average assets or average liabilities and attributed equity.

(b) Net interest margin is calculated based on the greater of average earning assets or average deposits and purchased funds.

FTE - Fully Taxable Equivalent

N/M - Not Meaningful

22

MARKET SEGMENT FINANCIAL RESULTS (unaudited)

Comerica Incorporated and Subsidiaries

																			Finance
(dollar amounts in millions)													Other						& Other
Three Months Ended March 31, 2011	Midwest			Western			Texas			Florida			Markets			International			Businesses			Total
Earnings summary:
Net interest income (expense) (FTE)	$	203		$	164		$	87		$	11		$	41		$	18		$	(128	)	$	396
Provision for loan losses	34			11			4			8			(7		)	(1		)	—			49
Noninterest income	100			37			23			4			11			8			24			207
Noninterest expenses	188			109			61			12			21			9			15			415
Provision (benefit) for income taxes (FTE)	28			30			16			(1		)	—			6			(43		)	36
Net income (loss)	$	53		$	51		$	29		$	(4	)	$	38		$	12		$	(76	)	$	103
Net credit-related charge-offs	$	46		$	26		$	8		$	8		$	9		$	4		$	—		$	101
Selected average balances:
Assets	$	14,307		$	12,590		$	7,031		$	1,553		$	3,242		$	1,735		$	13,317		$	53,775
Loans	14,104			12,383			6,824			1,580			2,960			1,671			29			39,551
Deposits	18,230			12,235			5,786			367			2,298			1,328			354			40,598
Statistical data:
Return on average assets (a)	1.08		%	1.54		%	1.65		%	(0.93		)%	4.70		%	2.79		%	N/M			0.77		%
Net interest margin (b)	4.49			5.37			5.17			2.82			5.73			4.34			N/M			3.25
Efficiency ratio	61.99			54.36			55.39			80.08			42.38			34.62			N/M			69.05
																			Finance
													Other						& Other
Three Months Ended December 31, 2010	Midwest			Western			Texas			Florida			Markets			International			Businesses			Total
Earnings summary:
Net interest income (expense) (FTE)	$	202		$	158		$	80		$	11		$	48		$	18		$	(111	)	$	406
Provision for loan losses	46			11			15			4			(19		)	3			(3		)	57
Noninterest income	99			35			27			3			10			9			32			215
Noninterest expenses	201			109			67			9			24			10			17			437
Provision (benefit) for income taxes (FTE)	19			32			9			—			5			5			(39		)	31
Net income (loss)	$	35		$	41		$	16		$	1		$	48		$	9		$	(54	)	$	96
Net credit-related charge-offs	$	52		$	43		$	9		$	7		$	2		$	—		$	—		$	113
Selected average balances:
Assets	$	14,506		$	12,698		$	6,653		$	1,587		$	3,911		$	1,615		$	12,786		$	53,756
Loans	14,219			12,497			6,435			1,612			3,651			1,545			40			39,999
Deposits	17,959			12,448			5,557			375			2,242			1,312			463			40,356
Statistical data:
Return on average assets (a)	0.72		%	1.21		%	0.96		%	0.13		%	4.93		%	2.24		%	N/M			0.71		%
Net interest margin (b)	4.45			5.01			4.91			2.64			5.32			4.38			N/M			3.29
Efficiency ratio	66.63			56.47			62.62			68.68			40.06			36.08			N/M			70.38
																			Finance
													Other						& Other
Three Months Ended March 31, 2010	Midwest			Western			Texas			Florida			Markets			International			Businesses			Total
Earnings summary:
Net interest income (expense) (FTE)	$	204		$	161		$	79		$	10		$	41		$	18		$	(97	)	$	416
Provision for loan losses	80			59			17			3			24			(3		)	(5		)	175
Noninterest income	102			36			20			3			10			9			14			194
Noninterest expenses	186			105			60			9			21			8			15			404
Provision (benefit) for income taxes (FTE)	14			11			8			—			(10		)	8			(35		)	(4		)
Income from discontinued operations, net of tax	—			—			—			—			—			—			17			17
Net income (loss)	$	26		$	22		$	14		$	1		$	16		$	14		$	(41	)	$	52
Net credit-related charge-offs	$	55		$	64		$	25		$	10		$	14		$	5		$	—		$	173
Selected average balances:
Assets	$	15,208		$	13,175		$	6,892		$	1,576		$	3,782		$	1,628		$	15,258		$	57,519
Loans	14,964			12,980			6,704			1,576			3,494			1,588			7			41,313
Deposits	17,056			11,927			4,957			361			1,985			973			1,312			38,571
Statistical data:
Return on average assets (a)	0.57		%	0.65		%	0.84		%	0.17		%	1.63		%	3.50		%	N/M			0.36		%
Net interest margin (b)	4.84			5.04			4.79			2.54			4.84			4.64			N/M			3.18
Efficiency ratio	60.60			53.32			60.46			72.04			43.95			29.12			N/M			66.45

(a) Return on average assets is calculated based on the greater of average assets or average liabilities and attributed equity.

(b) Net interest margin is calculated based on the greater of average earning assets or average deposits and purchased funds.

FTE - Fully Taxable Equivalent

N/M - Not Meaningful

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RECONCILIATION OF NON-GAAP FINANCIAL MEASURES (unaudited)

Comerica Incorporated and Subsidiaries

	2011			2010
	1st Qtr			4th Qtr			3rd Qtr			2nd Qtr			1st Qtr
Impact of Excess Liquidity on Net Interest Margin (FTE):
Net interest income (FTE)	$	396		$	406		$	405		$	424		$	416
Less:
Interest earned on excess liquidity (a)	1			1			2			2			3
Net interest income (FTE), excluding excess liquidity	$	395		$	405		$	403		$	422		$	413
Average earning assets	$	49,347		$	49,102		$	50,189		$	51,835		$	52,941
Less:
Average net unrealized gains on investment securities available-for-sale	22			139			180			80			62
Average earning assets for net interest margin (FTE)	49,325			48,963			50,009			51,755			52,879
Less:
Excess liquidity (a)	2,297			1,793			2,983			3,719			4,092
Average earning assets for net interest margin (FTE), excluding excess liquidity	$	47,028		$	47,170		$	47,026		$	48,036		$	48,787
Net interest margin (FTE)	3.25		%	3.29		%	3.23		%	3.28		%	3.18		%
Net interest margin (FTE), excluding excess liquidity	3.39			3.41			3.42			3.51			3.42
Impact of excess liquidity on net interest margin (FTE)	(0.14		)	(0.12		)	(0.19		)	(0.23		)	(0.24		)

	March 31,			December 31,			September 30,			June 30,			March 31,
	2011			2010			2010			2010			2010
Tier 1 Common Capital Ratio:
Tier 1 capital (b) (c)	$	6,105		$	6,027		$	5,940		$	6,371		$	6,311
Less:
Trust preferred securities	—			—			—			495			495
Tier 1 common capital (c)	$	6,105		$	6,027		$	5,940		$	5,876		$	5,816
Risk-weighted assets (b) (c)	$	58,849		$	59,506		$	59,608		$	59,877		$	60,792
Tier 1 capital ratio (c)	10.37		%	10.13		%	9.96		%	10.64		%	10.38		%
Tier 1 common capital ratio (c)	10.37			10.13			9.96			9.81			9.57
Tangible Common Equity Ratio:
Total common shareholders’ equity	$	5,877		$	5,793		$	5,857		$	5,792		$	5,668
Less:
Goodwill	150			150			150			150			150
Other intangible assets	5			6			6			6			7
Tangible common equity	$	5,722		$	5,637		$	5,701		$	5,636		$	5,511
Total assets	$	55,017		$	53,667		$	55,004		$	55,885		$	57,106
Less:
Goodwill	150			150			150			150			150
Other intangible assets	5			6			6			6			7
Tangible assets	$	54,862		$	53,511		$	54,848		$	55,729		$	56,949
Common equity ratio	10.68		%	10.80		%	10.65		%	10.36		%	9.93		%
Tangible common equity ratio	10.43			10.54			10.39			10.11			9.68

(a) Excess liquidity represented by interest earned on and average balances deposited with the Federal Reserve Bank (FRB).

(b) Tier 1 capital and risk-weighted assets as defined by regulation.

(c) March 31, 2011 Tier 1 capital and risk-weighted assets are estimated.

The net interest margin (FTE), excluding excess liquidity, removes interest earned on balances deposited with the FRB from net interest income (FTE) and average balances deposited with the FRB from average earning assets from the numerator and denominator of the net interest margin (FTE) ratio, respectively. Comerica believes this measurement provides meaningful information to investors, regulators, management and others of the impact on net interest income and net interest margin resulting from Comerica’s short-term investment in low yielding instruments.

The Tier 1 common capital ratio removes preferred stock and qualifying trust preferred securities from Tier 1 capital as defined by and calculated in conformity with bank regulations.  The tangible common equity removes preferred stock and the effect of intangible assets from capital and the effect of intangible assets from total assets.  Comerica believes these measurements are meaningful measures of capital adequacy used by investors, regulators, management and others to evaluate the adequacy of common equity and to compare against other companies in the industry.

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