Edgar Filing: CULLEN/FROST BANKERS, INC.

Large accelerated filer

Accelerated filer

Non-accelerated filer

¨ (Do not check if a smaller reporting company)

Smaller reporting company

Form 10-Q

United States

Securities and Exchange Commission

Washington, D.C. 20549

Form 10-Q

x	Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended: March 31, 2012

¨	Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from to

Commission file number: 001-13221

Cullen/Frost Bankers, Inc.

(Exact name of registrant as specified in its charter)


Texas		74-1751768
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)

100 W. Houston Street, San Antonio, Texas		78205
(Address of principal executive offices)		(Zip code)

(210) 220-4011

(Registrant’s telephone number, including area code)

N/A

(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes ¨ No x

As of April 19, 2012, there were 61,372,763 shares of the registrant’s Common Stock, $.01 par value, outstanding.

Cullen/Frost Bankers, Inc.

Quarterly Report on Form 10-Q

March 31, 2012

Table of Contents


			Page
Part I - Financial Information

	Item 1.	Financial Statements (Unaudited)

		Consolidated Balance Sheets		3

		Consolidated Statements of Income		4

		Consolidated Statements of Comprehensive Income		5

		Consolidated Statements of Changes in Shareholders’ Equity		6

		Consolidated Statements of Cash Flows		7

		Notes to Consolidated Financial Statements		8

	Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		38

	Item 3.	Quantitative and Qualitative Disclosures About Market Risk		59

	Item 4.	Controls and Procedures		60

Part II - Other Information

	Item 1.	Legal Proceedings		61

	Item 1A.	Risk Factors		61

	Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds		61

	Item 3.	Defaults Upon Senior Securities		61

	Item 4.	Mine Safety Disclosures		61

	Item 5.	Other Information		61

	Item 6.	Exhibits		61

Signatures				62

Part I. Financial Information

Item 1. Financial Statements (Unaudited)

Cullen/Frost Bankers, Inc.

Consolidated Balance Sheets

(Dollars in thousands, except per share amounts)


	March 31, 2012			December 31, 2011			March 31, 2011
Assets:
Cash and due from banks	$	623,204		$	574,039		$	587,655
Interest-bearing deposits		1,497,478			2,314,251			2,101,014
Federal funds sold and resell agreements		8,052			19,302			10,002

Total cash and cash equivalents		2,128,734			2,907,592			2,698,671
Securities held to maturity, at amortized cost		365,603			365,996			341,034
Securities available for sale, at estimated fair value		8,568,215			7,789,700			5,662,211
Trading account securities		16,846			13,609			20,746
Loans, net of unearned discounts		8,126,713			7,995,129			8,025,080
Less: Allowance for loan losses		(107,181	)		(110,147	)		(124,321	)

Net loans		8,019,532			7,884,982			7,900,759
Premises and equipment, net		321,681			319,042			313,233
Goodwill		535,560			528,072			527,684
Other intangible assets, net		11,033			10,604			13,215
Cash surrender value of life insurance policies		135,035			133,967			130,910
Accrued interest receivable and other assets		314,942			363,681			333,181

Total assets	$	20,417,181		$	20,317,245		$	17,941,644

Liabilities:
Deposits:
Non-interest-bearing demand deposits	$	6,784,112		$	6,672,555		$	5,413,002
Interest-bearing deposits		10,124,909			10,084,193			9,296,557

Total deposits		16,909,021			16,756,748			14,709,559
Federal funds purchased and repurchase agreements		637,098			722,202			553,571
Junior subordinated deferrable interest debentures		123,712			123,712			123,712
Other long-term borrowings		100,022			100,026			250,040
Accrued interest payable and other liabilities		326,615			331,020			207,411

Total liabilities		18,096,468			18,033,708			15,844,293
Shareholders’ Equity:
Preferred stock, par value $0.01 per share; 10,000,000 shares authorized; none issued		—			—			—
Common stock, par value $0.01 per share; 210,000,000 shares authorized; 61,372,763, shares issued at March 31, 2012, 61,271,603 shares issued at December 31, 2011 and 61,244,157 shares issued at March 31, 2011		614			613			613
Additional paid-in capital		688,150			680,803			668,237
Retained earnings		1,387,553			1,354,759			1,273,826
Accumulated other comprehensive income, net of tax		244,396			247,734			154,818
Treasury stock, 7,640 shares at December 31, 2011 and 2,464 shares at March 31, 2011, at cost		—			(372	)		(143	)

Total shareholders’ equity		2,320,713			2,283,537			2,097,351


Total liabilities and shareholders’ equity	$	20,417,181		$	20,317,245		$	17,941,644

See Notes to Consolidated Financial Statements.

Cullen/Frost Bankers, Inc.

Consolidated Statements of Income

(Dollars in thousands, except per share amounts)


	Three Months Ended March 31,
	2012			2011
Interest income:
Loans, including fees	$	97,351		$	98,488
Securities:
Taxable		36,066			31,185
Tax-exempt		22,503			22,733
Interest-bearing deposits		930			1,171
Federal funds sold and resell agreements		15			16

Total interest income		156,865			153,593

Interest expense:
Deposits		4,572			5,951
Federal funds purchased and repurchase agreements		34			131
Junior subordinated deferrable interest debentures		1,674			1,672
Other long-term borrowings		878			4,080

Total interest expense		7,158			11,834

Net interest income		149,707			141,759
Provision for loan losses		1,100			9,450

Net interest income after provision for loan losses		148,607			132,309

Non-interest income:
Trust and investment management fees		20,652			19,471
Service charges on deposit accounts		20,794			21,250
Insurance commissions and fees		12,377			10,494
Interchange and debit card transaction fees		4,117			8,045
Other charges, commissions and fees		7,350			7,228
Net gain (loss) on securities transactions		(491	)		5
Other		7,180			5,840

Total non-interest income		71,979			72,333
Non-interest expense:
Salaries and wages		63,702			62,430
Employee benefits		16,701			15,311
Net occupancy		11,797			11,652
Furniture and equipment		13,420			12,281
Deposit insurance		2,497			4,760
Intangible amortization		1,011			1,120
Other		32,912			32,507

Total non-interest expense		142,040			140,061


Income before income taxes		78,546			64,581
Income taxes		17,513			12,653

Net income	$	61,033		$	51,928

Earnings per common share:
Basic	$	0.99		$	0.85
Diluted		0.99			0.85

See Notes to Consolidated Financial Statements.

Cullen/Frost Bankers, Inc.

Consolidated Statements of Comprehensive Income

(Dollars in thousands)


	Three Months Ended March 31,
	2012			2011
Net income	$	61,033		$	51,928

Other comprehensive income (loss), before tax:
Securities available for sale:
Change in net unrealized gain/loss during the period		1,882			8,290
Reclassification adjustment for net (gains) losses included in net income		491			(5	)

Total securities available for sale		2,373			8,285
Defined-benefit post-retirement benefit plans:
Change in the net actuarial gain/loss		1,229			783
Derivatives:
Change in the accumulated gain/loss on effective cash flow hedge derivatives		(427	)		65
Reclassification adjustments for (gains) losses included in net income:
Interest rate swaps on variable-rate loans		(9,345	)		(9,345	)
Interest rate swap on junior subordinated deferrable interest debentures		1,033			1,086

Total derivatives		(8,739	)		(8,194	)


Other comprehensive income (loss), before tax		(5,137	)		874
Deferred tax expense (benefit) related to other comprehensive income		(1,799	)		306

Other comprehensive income (loss), net of tax		(3,338	)		568


Comprehensive income	$	57,695		$	52,496

See Notes to Consolidated Financial Statements.

Cullen/Frost Bankers, Inc.

Consolidated Statements of Changes in Shareholders’ Equity

(Dollars in thousands, except per share amounts)


	Three Months Ended March 31,
	2012			2011
Total shareholders’ equity at beginning of period	$	2,283,537		$	2,061,680

Net income		61,033			51,928
Other comprehensive income (loss)		(3,338	)		568
Stock option exercises (108,800 shares in 2012 and 114,293 shares in 2011)		5,542			5,769
Stock compensation expense recognized in earnings		2,555			3,737
Tax benefits (deficiencies) related to stock compensation		(377	)		89
Purchase of treasury stock (3,464 shares in 2011)		—			(201	)
Common stock issued/sold to the 401(k) stock purchase plan (22,680 shares in 2011)		—			1,360
Cash dividends ($0.46 per share in 2012 and $0.45 per share in 2011)		(28,239	)		(27,579	)


Total shareholders’ equity at end of period	$	2,320,713		$	2,097,351

See Notes to Consolidated Financial Statements.

Cullen/Frost Bankers, Inc.

Consolidated Statements of Cash Flows

(Dollars in thousands)


	Three Months Ended March 31,
	2012			2011
Operating Activities:
Net income	$	61,033		$	51,928
Adjustments to reconcile net income to net cash from operating activities:
Provision for loan losses		1,100			9,450
Deferred tax expense (benefit)		(2,539	)		(139	)
Accretion of loan discounts		(2,962	)		(2,366	)
Securities premium amortization (discount accretion), net		4,539			2,368
Net (gain) loss on securities transactions		491			(5	)
Depreciation and amortization		9,497			9,191
Net loss on sale/write-down of assets/foreclosed assets		477			1,597
Stock-based compensation		2,555			3,737
Net tax benefit (deficiency) from stock-based compensation		(418	)		(65	)
Excess tax benefits from stock-based compensation		(41	)		(154	)
Earnings on life insurance policies		(1,068	)		(988	)
Net change in:
Trading account securities		(3,237	)		(5,645	)
Accrued interest receivable and other assets		41,769			27,621
Accrued interest payable and other liabilities		(9,286	)		(25,293	)

Net cash from operating activities		101,910			71,237

Investing Activities:
Securities held to maturity:
Purchases		—			(57,547	)
Maturities, calls and principal repayments		315			156
Securities available for sale:
Purchases		(10,984,308	)		(6,195,353	)
Sales		9,985,078			5,547,541
Maturities, calls and principal repayments		218,136			148,979
Net change in loans		(133,759	)		75,427
Net cash paid in acquisitions		(7,199	)		—
Proceeds from sales of premises and equipment		214			988
Purchases of premises and equipment		(8,276	)		(3,586	)
Proceeds from sales of repossessed properties		4,522			3,599

Net cash from investing activities		(925,277	)		(479,796	)

Financing Activities:
Net change in deposits		152,273			230,217
Net change in short-term borrowings		(85,104	)		77,898
Principal payments on long-term borrowings		(4	)		(5	)
Proceeds from stock option exercises		5,542			5,769
Excess tax benefits from stock-based compensation		41			154
Purchase of treasury stock		—			(201	)
Cash dividends paid		(28,239	)		(27,579	)

Net cash from financing activities		44,509			286,253


Net change in cash and cash equivalents		(778,858	)		(122,306	)
Cash and equivalents at beginning of period		2,907,592			2,820,977


Cash and equivalents at end of period	$	2,128,734		$	2,698,671

See Notes to Consolidated Financial Statements.

Cullen/Frost Bankers, Inc.

Notes to Consolidated Financial Statements

(Table amounts in thousands, except for share and per share amounts)

Note 1 - Significant Accounting Policies

Nature of Operations. Cullen/Frost Bankers, Inc. (Cullen/Frost) is a financial holding company and a bank holding company headquartered in San Antonio, Texas that provides, through its subsidiaries, a broad array of products and services throughout numerous Texas markets. In addition to general commercial and consumer banking, other products and services offered include trust and investment management, investment banking, insurance, brokerage, leasing, asset-based lending, treasury management and item processing.

Basis of Presentation. The consolidated financial statements in this Quarterly Report on Form 10-Q include the accounts of Cullen/Frost and all other entities in which Cullen/Frost has a controlling financial interest (collectively referred to as the “Corporation”). All significant intercompany balances and transactions have been eliminated in consolidation. The accounting and financial reporting policies the Corporation follows conform, in all material respects, to accounting principles generally accepted in the United States and to general practices within the financial services industry.

The consolidated financial statements in this Quarterly Report on Form 10-Q have not been audited by an independent registered public accounting firm, but in the opinion of management, reflect all adjustments necessary for a fair presentation of the Corporation’s financial position and results of operations. All such adjustments were of a normal and recurring nature. The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and with the instructions to Form 10-Q adopted by the Securities and Exchange Commission (SEC). Accordingly, the financial statements do not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements and should be read in conjunction with the Corporation’s consolidated financial statements, and notes thereto, for the year ended December 31, 2011, included in the Corporation’s Annual Report on Form 10-K filed with the SEC on February 3, 2012 (the “2011 Form 10-K”). Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for a full year or any future period.

Use of Estimates. The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates. The allowance for loan losses, the fair value of stock-based compensation awards, the fair values of financial instruments and the status of contingencies are particularly subject to change.

Cash Flow Reporting. Additional cash flow information was as follows:


	Three Months Ended March 31,
	2012		2011
Cash paid for interest	$	9,377	$	16,634
Cash paid for income tax		—		—

Significant non-cash transactions:
Loans foreclosed and transferred to other real estate owned and foreclosed assets		1,071		7,434
Common stock/treasury stock issued to the Corporation’s 401(k) stock purchase plan		—		1,360

Reclassifications. Certain items in prior financial statements have been reclassified to conform to the current presentation. Mutual fund investment management fees previously reported as a component of other charges, commissions and fees are now included with trust fees and reported as trust and investment management fees in the consolidated statements of income. Additionally, interchange and debit card transaction fees (including automated teller machine fees) previously reported as components of service charges on deposit accounts; other charges, commissions and fees; or other non-interest income are now reported as interchange and debit card transaction fees in the consolidated statements of income.

Note 2 - Securities

A summary of the amortized cost and estimated fair value of securities, excluding trading securities, is presented below.


	March 31, 2012								December 31, 2011
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Held to Maturity
U. S. Treasury	$	247,893	$	29,275	$	—	$	277,168	$	247,797	$	31,715	$	—	$	279,512
Residential mortgage-backed securities		11,547		178		—		11,725		11,874		153		—		12,027
States and political subdivisions		105,163		7,773		—		112,936		105,325		6,597		—		111,922
Other		1,000		—		—		1,000		1,000		—		—		1,000

Total	$	365,603	$	37,226	$	—	$	402,829	$	365,996	$	38,465	$	—	$	404,461

Available for Sale:
U. S. Treasury	$	3,018,660	$	29,607	$	219	$	3,048,048	$	2,020,621	$	36,111	$	—	$	2,056,732
U.S. government agencies/corporations		250,000		782		—		250,782		250,000		884		—		250,884
Residential mortgage-backed securities		2,967,744		156,222		1		3,123,965		3,135,064		154,386		180		3,289,270
States and political subdivisions		1,942,118		165,320		27		2,107,411		1,996,703		158,133		23		2,154,813
Other		38,009		—		—		38,009		38,001		—		—		38,001

Total	$	8,216,531	$	351,931	$	247	$	8,568,215	$	7,440,389	$	349,514	$	203	$	7,789,700

All mortgage-backed securities included in the above table were issued by U.S. government agencies and corporations. Securities with limited marketability, such as stock in the Federal Reserve Bank and the Federal Home Loan Bank, are carried at cost and are reported as other available for sale securities in the above table. The carrying value of securities pledged to secure public funds, trust deposits, repurchase agreements and for other purposes, as required or permitted by law was $2.2 billion at March 31, 2012 and $2.4 billion and December 31, 2011.

As of March 31, 2012, securities, with unrealized losses segregated by length of impairment, were as follows:


	Less than 12 Months				More than 12 Months				Total
	Estimated		Unrealized		Estimated		Unrealized		Estimated		Unrealized
	Fair Value		Losses		Fair Value		Losses		Fair Value		Losses
Available for Sale
U.S. Treasury	$	250,332	$	219	$	—	$	—	$	250,332	$	219
Residential mortgage-backed securities		16		—		49		1		65		1
States and political subdivisions		2,225		27		—		—		2,225		27

Total	$	252,573	$	246	$	49	$	1	$	252,622	$	247

Declines in the fair value of held-to-maturity and available-for-sale securities below their cost that are deemed to be other than temporary are reflected in earnings as realized losses to the extent the impairment is related to credit losses. The amount of the impairment related to other factors is recognized in other comprehensive income. In estimating other-than-temporary impairment losses, management considers, among other things, (i) the length of time and the extent to which the fair value has been less than cost, (ii) the financial condition and near-term prospects of the issuer, and (iii) the intent and ability of the Corporation to retain its investment in the issuer for a period of time sufficient to allow for any anticipated recovery in cost.

Management has the ability and intent to hold the securities classified as held to maturity in the table above until they mature, at which time the Corporation will receive full value for the securities. Furthermore, as of March 31, 2012, management does not have the intent to sell any of the securities classified as available for sale in the table above and believes that it is more likely than not that the Corporation will not have to sell any such securities before a recovery of cost. Any unrealized losses are largely due to increases in market interest rates over the yields available at the time the underlying securities were purchased. The fair value is expected to recover as the bonds approach their maturity date or repricing date or if market yields for such investments decline. Management does not believe any of the securities are impaired due to reasons of credit quality. Accordingly, as of March 31, 2012, management believes the impairments detailed in the table above are temporary and no impairment loss has been realized in the Corporation’s consolidated income statement.

The amortized cost and estimated fair value of securities, excluding trading securities, at March 31, 2012 are presented below by contractual maturity. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Residential mortgage-backed securities and equity securities are shown separately since they are not due at a single maturity date.

		$0,000,000		$0,000,000		$0,000,000		$0,000,000
	Held to Maturity				Available for Sale
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due in one year or less	$	1,000	$	1,000	$	14,850	$	15,125
Due after one year through five years		247,893		277,168		3,360,602		3,396,548
Due after five years through ten years		3,320		3,623		208,835		224,491
Due after ten years		101,843		109,313		1,626,491		1,770,077
Residential mortgage-backed securities		11,547		11,725		2,967,744		3,123,965
Equity securities		—		—		38,009		38,009

Total	$	365,603	$	402,829	$	8,216,531	$	8,568,215

Sales of securities available for sale were as follows:

		$0,000,000			$0,000,000
	Three Months Ended March 31,
	2012			2011
Proceeds from sales	$	9,985,078		$	5,547,541
Gross realized gains		2,137			9
Gross realized losses		(2,628	)		(4	)
Tax (expense) benefit of securities gains/losses		172			(2	)

Trading account securities, at estimated fair value, were as follows:

		$0,000,000		$0,000,000
	March 31,		December 31,
	2012		2011
U.S. Treasury	$	13,409	$	13,609
States and political subdivisions		3,437		—

Total	$	16,846	$	13,609

Net gains and losses on trading account securities were as follows:

		$0,000,000			$0,000,000
	Three Months Ended March 31,
	2012			2011
Net gain on sales transactions	$	323		$	308
Net mark-to-market gains (losses)		(60	)		—

Net gain on trading account securities	$	263		$	308

Note 3 - Loans

Loans were as follows:


	March 31,			Percentage			December 31,			Percentage			March 31,			Percentage
	2012			of Total			2011			of Total			2011			of Total
Commercial and industrial:
Commercial	$	3,709,450			45.7	%	$	3,553,989			44.5	%	$	3,393,769			42.3	%
Leases		193,162			2.4			193,412			2.4			194,692			2.4
Asset-based		140,240			1.7			169,466			2.1			134,783			1.7

Total commercial and industrial		4,042,852			49.8			3,916,867			49.0			3,723,244			46.4
Commercial real estate:
Commercial mortgages		2,357,206			29.0			2,383,479			29.8			2,410,760			30.0
Construction		493,600			6.1			434,870			5.5			574,637			7.2
Land		184,078			2.2			202,478			2.5			227,297			2.8

Total commercial real estate		3,034,884			37.3			3,020,827			37.8			3,212,694			40.0
Consumer real estate:
Home equity loans		288,961			3.6			282,244			3.5			274,952			3.4
Home equity lines of credit		190,371			2.4			191,960			2.4			187,573			2.3
1-4 family residential mortgages		43,284			0.5			45,943			0.6			53,587			0.7
Construction		18,910			0.2			17,544			0.2			23,504			0.3
Other		219,760			2.7			225,118			2.8			244,752			3.1

Total consumer real estate		761,286			9.4			762,809			9.5			784,368			9.8

Total real estate		3,796,170			46.7			3,783,636			47.3			3,997,062			49.8
Consumer and other:
Consumer installment		296,057			3.6			301,518			3.8			307,812			3.9
Other		8,415			0.1			11,018			0.1			17,310			0.2

Total consumer and other		304,472			3.7			312,536			3.9			325,122			4.1
Unearned discounts		(16,781	)		(0.2	)		(17,910	)		(0.2	)		(20,348	)		(0.3	)

Total loans	$	8,126,713			100.0	%	$	7,995,129			100.0	%	$	8,025,080			100.0	%

Loan Origination/Risk Management. The Corporation has certain lending policies and procedures in place that are designed to maximize loan income within an acceptable level of risk. Management reviews and approves these policies and procedures on a regular basis. A reporting system supplements the review process by providing management with frequent reports related to loan production, loan quality, concentrations of credit, loan delinquencies and non-performing and potential problem loans. Diversification in the loan portfolio is a means of managing risk associated with fluctuations in economic conditions.

Commercial and industrial loans are underwritten after evaluating and understanding the borrower’s ability to operate profitably and prudently expand its business. Underwriting standards are designed to promote relationship banking rather than transactional banking. Once it is determined that the borrower’s management possesses sound ethics and solid business acumen, the Corporation’s management examines current and projected cash flows to determine the ability of the borrower to repay their obligations as agreed. Commercial and industrial loans are primarily made based on the identified cash flows of the borrower and secondarily on the underlying collateral provided by the borrower. The cash flows of borrowers, however, may not be as expected and the collateral securing these loans may fluctuate in value. Most commercial and industrial loans are secured by the assets being financed or other business assets such as accounts receivable or inventory and may incorporate a personal guarantee; however, some short-term loans may be made on an unsecured basis. In the case of loans secured by accounts receivable, the availability of funds for the repayment of these loans may be substantially dependent on the ability of the borrower to collect amounts due from its customers.

Commercial real estate loans are subject to underwriting standards and processes similar to commercial and industrial loans, in addition to those of real estate loans. These loans are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Commercial real estate lending typically involves higher loan principal amounts and the repayment of these loans is generally largely dependent on the successful operation of the property securing the loan or the business conducted on the property securing the loan. Commercial real estate loans may be more adversely affected by conditions in the real estate markets or in the general economy. The properties securing the Corporation’s commercial real estate portfolio are diverse in terms of type and geographic location. This diversity helps reduce the Corporation’s exposure to adverse economic events that affect any single market or industry. Management monitors and evaluates commercial real estate loans based on collateral, geography and risk grade criteria. As a general rule, the Corporation avoids financing single-purpose

projects unless other underwriting factors are present to help mitigate risk. The Corporation also utilizes third-party experts to provide insight and guidance about economic conditions and trends affecting market areas it serves. In addition, management tracks the level of owner-occupied commercial real estate loans versus non-owner occupied loans. At March 31, 2012, approximately 58% of the outstanding principal balance of the Corporation’s commercial real estate loans were secured by owner-occupied properties.

With respect to loans to developers and builders that are secured by non-owner occupied properties that the Corporation may originate from time to time, the Corporation generally requires the borrower to have had an existing relationship with the Corporation and have a proven record of success. Construction loans are underwritten utilizing feasibility studies, independent appraisal reviews, sensitivity analysis of absorption and lease rates and financial analysis of the developers and property owners. Construction loans are generally based upon estimates of costs and value associated with the complete project. These estimates may be inaccurate. Construction loans often involve the disbursement of substantial funds with repayment substantially dependent on the success of the ultimate project. Sources of repayment for these types of loans may be pre-committed permanent loans from approved long-term lenders, sales of developed property or an interim loan commitment from the Corporation until permanent financing is obtained. These loans are closely monitored by on-site inspections and are considered to have higher risks than other real estate loans due to their ultimate repayment being sensitive to interest rate changes, governmental regulation of real property, general economic conditions and the availability of long-term financing.

The Corporation originates consumer loans utilizing a computer-based credit scoring analysis to supplement the underwriting process. To monitor and manage consumer loan risk, policies and procedures are developed and modified, as needed, jointly by line and staff personnel. This activity, coupled with relatively small loan amounts that are spread across many individual borrowers, minimizes risk. Additionally, trend and outlook reports are reviewed by management on a regular basis. Underwriting standards for home equity loans are heavily influenced by statutory requirements, which include, but are not limited to, a maximum loan-to-value percentage of 80%, collection remedies, the number of such loans a borrower can have at one time and documentation requirements.

The Corporation maintains an independent loan review department that reviews and validates the credit risk program on a periodic basis. Results of these reviews are presented to management. The loan review process complements and reinforces the risk identification and assessment decisions made by lenders and credit personnel, as well as the Corporation’s policies and procedures.

Concentrations of Credit. Most of the Corporation’s lending activity occurs within the State of Texas, including the four largest metropolitan areas of Austin, Dallas/Ft. Worth, Houston and San Antonio, as well as other markets. The majority of the Corporation’s loan portfolio consists of commercial and industrial and commercial real estate loans. Other than energy loans, as of March 31, 2012 there were no concentrations of loans related to any single industry in excess of 10% of total loans.

Foreign Loans. The Corporation has U.S. dollar denominated loans and commitments to borrowers in Mexico. The outstanding balance of these loans and the unfunded amounts available under these commitments were not significant at March 31, 2012 or December 31, 2011.

Non-Accrual and Past Due Loans. Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. Loans are placed on non-accrual status when, in management’s opinion, the borrower may be unable to meet payment obligations as they become due, as well as when required by regulatory provisions. In determining whether or not a borrower may be unable to meet payment obligations for each class of loans, the Corporation considers the borrower’s debt service capacity through the analysis of current financial information, if available, and/or current information with regards to the Corporation’s collateral position. Regulatory provisions would typically require the placement of a loan on non-accrual status if (i) principal or interest has been in default for a period of 90 days or more unless the loan is both well secured and in the process of collection or (ii) full payment of principal and interest is not expected. Loans may be placed on non-accrual status regardless of whether or not such loans are considered past due. When interest accrual is discontinued, all unpaid accrued interest is reversed. Interest income on non-accrual loans is recognized only to the extent that cash payments are received in excess of principal due. A loan may be returned to accrual status when all the principal and interest amounts contractually due are brought current and future principal and interest amounts contractually due are reasonably assured, which is typically evidenced by a sustained period (at least six months) of repayment performance by the borrower.

Non-accrual loans, segregated by class of loans, were as follows:


	March 31,		December 31,		March 31,
	2012		2011		2011
Commercial and industrial:
Energy	$	—	$	—	$	—
Other commercial		49,588		43,874		58,681
Commercial real estate:
Buildings, land and other		41,892		43,820		53,920
Construction		1,285		1,329		6,888
Consumer real estate		4,322		4,587		3,741
Consumer and other		783		728		581

Total	$	97,870	$	94,338	$	123,811

Had non-accrual loans performed in accordance with their original contract terms, the Corporation would have recognized additional interest income, net of tax, of approximately $642 thousand for the three months ended March 31, 2012, compared to $1.3 million for the same period in 2011.

An age analysis of past due loans (including both accruing and non-accruing loans), segregated by class of loans, as of March 31, 2012 was as follows:


	Loans 30-89 Days Past Due		Loans 90 or More Days Past Due		Total Past Due Loans		Current Loans			Total Loans			Accruing Loans 90 or More Days Past Due
Commercial and industrial:
Energy	$	—	$	—	$	—	$	994,979		$	994,979		$	—
Other commercial		13,297		21,651		34,948		3,012,925			3,047,873			6,805
Commercial real estate:
Buildings, land and other		23,678		24,308		47,986		2,493,298			2,541,284			9,473
Construction		1,247		1,791		3,038		490,562			493,600			1,743
Consumer real estate		5,565		4,504		10,069		751,217			761,286			2,408
Consumer and other		3,547		288		3,835		300,637			304,472			189
Unearned discounts		—		—		—		(16,781	)		(16,781	)		—

Total	$	47,334	$	52,542	$	99,876	$	8,026,837		$	8,126,713		$	20,618

Impaired Loans. Loans are considered impaired when, based on current information and events, it is probable the Corporation will be unable to collect all amounts due in accordance with the original contractual terms of the loan agreement, including scheduled principal and interest payments. Impairment is evaluated in total for smaller-balance loans of a similar nature and on an individual loan basis for other loans. If a loan is impaired, a specific valuation allowance is allocated, if necessary, so that the loan is reported net, at the present value of estimated future cash flows using the loan’s existing rate or at the fair value of collateral if repayment is expected solely from the collateral. Interest payments on impaired loans are typically applied to principal unless collectibility of the principal amount is reasonably assured, in which case interest is recognized on a cash basis. Impaired loans, or portions thereof, are charged off when deemed uncollectible.

Regulatory guidelines require the Corporation to reevaluate the fair value of collateral supporting impaired collateral dependent loans on at least an annual basis. While the Corporation’s policy is to comply with the regulatory guidelines, the Corporation’s general practice is to reevaluate the fair value of collateral supporting impaired collateral dependent loans on a quarterly basis. Thus, appraisals are never considered to be outdated, and the Corporation does not need to make any adjustments to the appraised values. The fair value of collateral supporting impaired collateral dependent loans is evaluated by the Corporation’s internal appraisal services using a methodology that is consistent with the Uniform Standards of Professional Appraisal Practice. The fair value of collateral supporting impaired collateral dependent construction loans is based on an “as is” valuation.

Impaired loans are set forth in the following table. No interest income was recognized on impaired loans subsequent to their classification as impaired.


	Unpaid		Recorded		Recorded						Average Recorded
	Contractual		Investment		Investment		Total				Investment
	Principal		With No		With		Recorded		Related		Quarter		Year
	Balance		Allowance		Allowance		Investment		Allowance		To Date		To Date
March 31, 2012
Commercial and industrial:
Energy	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other commercial		55,632		28,932		15,804		44,736		5,356		42,034		42,034
Commercial real estate:
Buildings, land and other		47,077		36,821		2,243		39,064		1,113		39,996		39,996
Construction		1,551		1,237		—		1,237		—		1,259		1,259
Consumer real estate		2,623		1,826		751		2,577		95		2,524		2,524
Consumer and other		547		535		—		535		—		544		544

Total	$	107,430	$	69,351	$	18,798	$	88,149	$	6,564	$	86,357	$	86,357

December 31, 2011
Commercial and industrial:
Energy	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other commercial		57,723		34,712		4,619		39,331		2,696		46,151		53,830
Commercial real estate:
Buildings, land and other		51,163		38,686		2,243		40,929		1,113		41,522		48,635
Construction		1,568		1,281		—		1,281		—		1,527		4,339
Consumer real estate		2,499		1,719		751		2,470		95		2,484		1,845
Consumer and other		562		554		—		554		—		561		265

Total	$	113,515	$	76,952	$	7,613	$	84,565	$	3,904	$	92,245	$	108,914

March 31, 2011
Commercial and industrial:
Energy	$	—	$	—	$	—	$	—	$	—	$	—	$	—
Other commercial		70,411		27,742		25,245		52,987		13,066		54,215		54,215
Commercial real estate:
Buildings, land and other		62,993		42,021		9,515		51,536		3,626		56,671		56,671
Construction		7,124		6,587		—		6,587		—		7,944		7,944
Consumer real estate		1,786		1,786		—		1,786		—		1,152		1,152
Consumer and other		102		101		—		101		—		51		51

Total	$	142,416	$	78,237	$	34,760	$	112,997	$	16,692	$	120,033	$	120,033

Troubled Debt Restructurings. The restructuring of a loan is considered a “troubled debt restructuring” if both (i) the borrower is experiencing financial difficulties and (ii) the creditor has granted a concession. Concessions may include interest rate reductions or below market interest rates, principal forgiveness, restructuring amortization schedules and other actions intended to minimize potential losses.

There were no troubled debt restructurings during the three months ended March 31, 2012. During the three months ended March 31, 2011, the Corporation had troubled debt restructurings of commercial real estate loans with an aggregate restructuring date balance of $4.2 million. All of the loans identified as troubled debt restructurings by the Corporation during the three months ended March 31, 2011 were previously on non-accrual status and reported as impaired loans prior to restructuring. The modifications primarily related to extending the amortization periods of the loans. The Corporation did not grant interest-rate concessions on any restructured loan. All loans restructured during the reported periods were on non-accrual status as of the end of those periods. Because the loans were classified and on non-accrual status both before and after restructuring, the modifications did not impact the Corporation’s determination of the allowance for loan losses. During the three months ended March 31, 2012, defaults on loans restructured during 2011 were not significant and such defaults did not significantly impact the Corporation’s determination of the allowance for loan losses.

Credit Quality Indicators. As part of the on-going monitoring of the credit quality of the Corporation’s loan portfolio, management tracks certain credit quality indicators including trends related to (i) the weighted-average risk grade of commercial loans, (ii) the level of classified commercial loans, (iii) the delinquency status of consumer loans (see details above) (iv) net charge-offs, (v) non-performing loans (see details above) and (vi) the general economic conditions in the State of Texas.

The Corporation utilizes a risk grading matrix to assign a risk grade to each of its commercial loans. Loans are graded on a scale of 1 to 14. A description of the general characteristics of the 14 risk grades is as follows:

•

Grades 1, 2 and 3 - These grades include loans to very high credit quality borrowers of investment or near investment grade. These borrowers are generally publicly traded (grades 1 and 2), have significant capital strength, moderate leverage, stable earnings and growth, and readily available financing alternatives. Smaller entities, regardless of strength, would generally not fit in these grades.

•

Grades 4 and 5 - These grades include loans to borrowers of solid credit quality with moderate risk. Borrowers in these grades are differentiated from higher grades on the basis of size (capital and/or revenue), leverage, asset quality and the stability of the industry or market area.

•

Grades 6, 7 and 8 - These grades include “pass grade” loans to borrowers of acceptable credit quality and risk. Such borrowers are differentiated from Grades 4 and 5 in terms of size, secondary sources of repayment or they are of lesser stature in other key credit metrics in that they may be over-leveraged, under capitalized, inconsistent in performance or in an industry or an economic area that is known to have a higher level of risk, volatility, or susceptibility to weaknesses in the economy.

•

Grade 9 - This grade includes loans on management’s “watch list” and is intended to be utilized on a temporary basis for pass grade borrowers where a significant risk-modifying action is anticipated in the near term.

•

Grade 10 – This grade is for “Other Assets Especially Mentioned” in accordance with regulatory guidelines. This grade is intended to be temporary and includes loans to borrowers whose credit quality has clearly deteriorated and are at risk of further decline unless active measures are taken to correct the situation.

•

Grade 11 - This grade includes “Substandard” loans, in accordance with regulatory guidelines, for which the accrual of interest has not been stopped. By definition under regulatory guidelines, a “Substandard” loan has defined weaknesses which make payment default or principal exposure likely, but not yet certain. Such loans are apt to be dependent upon collateral liquidation, a secondary source of repayment or an event outside of the normal course of business.

•

Grade 12 - This grade includes “Substandard” loans, in accordance with regulatory guidelines, for which the accrual of interest has been stopped. This grade includes loans where interest is more than 120 days past due and not fully secured and loans where a specific valuation allowance may be necessary, but generally does not exceed 30% of the principal balance.

•

Grade 13 - This grade includes “Doubtful” loans in accordance with regulatory guidelines. Such loans are placed on non-accrual status and may be dependent upon collateral having a value that is difficult to determine or upon some near-term event which lacks certainty. Additionally, these loans generally have a specific valuation allowance in excess of 30% of the principal balance.

•

Grade 14 - This grade includes “Loss” loans in accordance with regulatory guidelines. Such loans are to be charged-off or charged-down when payment is acknowledged to be uncertain or when the timing or value of payments cannot be determined. “Loss” is not intended to imply that the loan or some portion of it will never be paid, nor does it in any way imply that there has been a forgiveness of debt.

In monitoring credit quality trends in the context of assessing the appropriate level of the allowance for loan losses, the Corporation monitors portfolio credit quality by the weighted-average risk grade of each class of commercial loan. Individual relationship managers review updated financial information for all pass grade loans to recalculate the risk grade on at least an annual basis. When a loan has a calculated risk grade of 9, it is still considered a pass grade loan; however, it is considered to be on management’s “watch list,” where a significant risk-modifying action is anticipated in the near term. When a loan has a calculated risk grade of 10 or higher, a special assets officer monitors the loan on an on-going basis. The following table presents weighted average risk grades for all commercial loans by class.


	March 31, 2012				December 31, 2011				March 31, 2011
	Weighted				Weighted				Weighted
	Average				Average				Average
	Risk Grade		Loans		Risk Grade		Loans		Risk Grade		Loans
Commercial and industrial:
Energy
Risk grades 1-8		5.37	$	992,463		5.21	$	868,561		5.35	$	760,093
Risk grade 9		9.00		2,516		9.00		2,025		9.00		1,477
Risk grade 10		10.00		—		10.00		—		10.00		—
Risk grade 11		11.00		—		11.00		—		11.00		—
Risk grade 12		12.00		—		12.00		—		12.00		—
Risk grade 13		13.00		—		13.00		—		13.00		—

Total energy		5.38	$	994,979		5.22	$	870,586		5.36	$	761,570

Other commercial
Risk grades 1-8		6.20	$	2,803,976		6.20	$	2,802,037		6.22	$	2,590,198
Risk grade 9		9.00		65,376		9.00		55,105		9.00		101,576
Risk grade 10		10.00		35,504		10.00		49,982		10.00		98,865
Risk grade 11		11.00		93,415		11.00		96,046		11.00		111,514
Risk grade 12		12.00		44,520		12.00		39,826		12.00		35,636
Risk grade 13		13.00		5,082		13.00		3,285		13.00		23,885

Total other commercial		6.55	$	3,047,873		6.55	$	3,046,281		6.75	$	2,961,674

Commercial real estate:
Buildings, land and other
Risk grades 1-8		6.67	$	2,233,155		6.69	$	2,266,576		6.71	$	2,253,835
Risk grade 9		9.00		104,727		9.00		103,894		9.00		138,117
Risk grade 10		10.00		33,641		10.00		45,278		10.00		79,306
Risk grade 11		11.00		127,869		11.00		126,594		11.00		101,357
Risk grade 12		12.00		40,486		12.00		41,747		12.00		58,064
Risk grade 13		13.00		1,406		13.00		1,868		13.00		7,378

Total commercial real estate		7.12	$	2,541,284		7.14	$	2,585,957		7.23	$	2,638,057

Construction
Risk grades 1-8		6.97	$	454,674		6.95	$	378,530		7.15	$	497,355
Risk grade 9		9.00		16,062		9.00		30,376		9.00		28,173
Risk grade 10		10.00		15,442		10.00		16,186		10.00		30,128
Risk grade 11		11.00		6,137		11.00		8,449		11.00		12,170
Risk grade 12		12.00		1,285		12.00		1,329		12.00		6,587
Risk grade 13		13.00		—		13.00		—		13.00		—
Risk grade 14		14.00		—		14.00		—		14.00		224

Total construction		7.19	$	493,600		7.30	$	434,870		7.53	$	574,637

The Corporation has established maximum loan to value standards to be applied during the origination process of commercial and consumer real estate loans. The Corporation does not subsequently monitor loan-to-value ratios (either individually or on a weighted-average basis) for loans that are subsequently considered to be of a pass grade (grades 9 or better) and/or current with respect to principal and interest payments. As stated above, when an individual commercial real estate loan has a calculated risk grade of 10 or higher, a special assets officer analyzes the loan to determine whether the loan is impaired. At that time, the Corporation reassesses the loan to value position in the loan. If the loan is determined to be collateral dependent, specific allocations of the allowance for loan losses are made for the amount of any collateral deficiency. If a collateral deficiency is ultimately deemed to be uncollectible, the amount is charged-off. These loans and related assessments of collateral position are monitored on an individual, case-by-case basis. The Corporation does not monitor loan-to-value ratios on a weighted-average basis for commercial real estate loans having a calculated risk grade of 10 or higher. Nonetheless, there were five commercial real estate loans having a calculated risk grade of 10 or higher in excess

of $5 million as of March 31, 2012. Four of the loans totaled $42.1million and had a weighted-average loan-to-value ratio of 73.3%. The fifth loan, totaling $6.0 million, is structured as a borrowing base facility secured by numerous rotating lots and single family residences that generally have a loan-to-value of 80% or less. When an individual consumer real estate loan becomes past due by more than 10 days, the assigned relationship manager will begin collection efforts. The Corporation only reassesses the loan to value position in a consumer real estate loan if, during the course of the collections process, it is determined that the loan has become collateral dependent, and any collateral deficiency is recognized as a charge-off to the allowance for loan losses. Accordingly, the Corporation does not monitor loan-to-value ratios on a weighted-average basis for collateral dependent consumer real estate loans.

Generally, a commercial loan, or a portion thereof, is charged-off immediately when it is determined, through the analysis of any available current financial information with regards to the borrower, that the borrower is incapable of servicing unsecured debt, there is little or no prospect for near term improvement and no realistic strengthening action of significance is pending or, in the case of secured debt, when it is determined, through analysis of current information with regards to the Corporation’s collateral position, that amounts due from the borrower are in excess of the calculated current fair value of the collateral. Notwithstanding the foregoing, generally, commercial loans that become past due 180 cumulative days are classified as a loss and charged-off. Generally, a consumer loan, or a portion thereof, is charged-off in accordance with regulatory guidelines which provide that such loans be charged-off when the Corporation becomes aware of the loss, such as from a triggering event that may include new information about a borrower’s intent/ability to repay the loan, bankruptcy, fraud or death, among other things, but in no case should the charge-off exceed specified delinquency timeframes. Such delinquency timeframes state that closed-end retail loans (loans with pre-defined maturity dates, such as real estate mortgages, home equity loans and consumer installment loans) that become past due 120 cumulative days and open-end retail loans (loans that roll-over at the end of each term, such as home equity lines of credit) that become past due 180 cumulative days should be classified as a loss and charged-off.

Net (charge-offs)/recoveries, segregated by class of loans, were as follows:


	Three Months Ended March 31,
	2012			2011
Commercial and industrial:
Energy	$	4		$	—
Other commercial		(1,675	)		(6,830	)
Commercial real estate:
Buildings, land and other		(2,360	)		(3,165	)
Construction		10			(156	)
Consumer real estate		234			(530	)
Consumer and other		(279	)		(764	)

Total	$	(4,066	)	$	(11,445	)

In assessing the general economic conditions in the State of Texas, management monitors and tracks the Texas Leading Index (“TLI”), which is produced by the Federal Reserve Bank of Dallas. The TLI is a single summary statistic that is designed to signal the likelihood of the Texas economy’s transition from expansion to recession and vice versa. Management believes this index provides a reliable indication of the direction of overall credit quality. The TLI is a composite of the following eight leading indicators: (i) Texas Value of the Dollar, (ii) U.S. Leading Index, (iii) real oil prices (iv) well permits, (v) initial claims for unemployment insurance, (vi) Texas Stock Index, (vii) Help-Wanted Index and (viii) average weekly hours worked in manufacturing. The TLI totaled 122.8 at February 28, 2012 (most recent date available), 120.4 at December 31, 2011 and 122.0 at March 31, 2011. A higher TLI value implies more favorable economic conditions.

Allowance for Loan Losses. The allowance for loan losses is a reserve established through a provision for loan losses charged to expense, which represents management’s best estimate of probable losses that have been incurred within the existing portfolio of loans. The allowance, in the judgment of management, is necessary to reserve for estimated loan losses and risks inherent in the loan portfolio. The Corporation’s allowance for loan loss methodology follows the accounting guidance set forth in U.S. generally accepted accounting principles and the Interagency Policy Statement on the Allowance for Loan and Lease Losses, which was jointly issued by the Corporation’s regulatory agencies. In that regard, the Corporation’s allowance for loan losses includes allowance allocations calculated in accordance with ASC Topic 310, “Receivables” and allowance allocations calculated in accordance with ASC Topic 450, “Contingencies.” Accordingly, the methodology is based on historical loss experience by type of credit and internal risk grade, specific homogeneous risk pools and specific loss allocations, with adjustments for current events and conditions. The Corporation’s process for determining the appropriate level of the allowance for loan losses is designed to account for credit deterioration as it occurs. The provision for loan losses reflects loan quality trends, including the levels of and trends related to non-accrual loans, past due loans, potential problem loans, criticized loans and net charge-offs or recoveries, among other factors. The provision for loan losses

also reflects the totality of actions taken on all loans for a particular period. In other words, the amount of the provision reflects not only the necessary increases in the allowance for loan losses related to newly identified criticized loans, but it also reflects actions taken related to other loans including, among other things, any necessary increases or decreases in required allowances for specific loans or loan pools.

The level of the allowance reflects management’s continuing evaluation of industry concentrations, specific credit risks, loan loss and recovery experience, current loan portfolio quality, present economic, political and regulatory conditions and unidentified losses inherent in the current loan portfolio. Portions of the allowance may be allocated for specific credits; however, the entire allowance is available for any credit that, in management’s judgment, should be charged off. While management utilizes its best judgment and information available, the ultimate determination of the appropriate level of the allowance is dependent upon a variety of factors beyond the Corporation’s control, including, among other things, the performance of the Corporation’s loan portfolio, the economy, changes in interest rates and the view of the regulatory authorities toward loan classifications. The Corporation monitors whether or not the allowance for loan loss allocation model, as a whole, calculates an appropriate level of allowance for loan losses that moves in direct correlation to the general macroeconomic and loan portfolio conditions the Corporation experiences over time.

The Corporation’s allowance for loan losses consists of three elements: (i) specific valuation allowances determined in accordance with ASC Topic 310 based on probable losses on specific loans; (ii) historical valuation allowances determined in accordance with ASC Topic 450 based on historical loan loss experience for similar loans with similar characteristics and trends, adjusted, as necessary, to reflect the impact of current conditions; and (iii) general valuation allowances determined in accordance with ASC Topic 450 based on general economic conditions and other risk factors both internal and external to the Corporation.

The allowances established for probable losses on specific loans are based on a regular analysis and evaluation of problem loans. Loans are classified based on an internal credit risk grading process that evaluates, among other things: (i) the obligor’s ability to repay; (ii) the underlying collateral, if any; and (iii) the economic environment and industry in which the borrower operates. This analysis is performed at the relationship manager level for all commercial loans. When a loan has a calculated grade of 10 or higher, a special assets officer analyzes the loan to determine whether the loan is impaired and, if impaired, the need to specifically allocate a portion of the allowance for loan losses to the loan. Specific valuation allowances are determined by analyzing the borrower’s ability to repay amounts owed, collateral deficiencies, the relative risk grade of the loan and economic conditions affecting the borrower’s industry, among other things.

Historical valuation allowances are calculated based on the historical gross loss experience of specific types of loans and the internal risk grade of such loans at the time they were charged-off. The Corporation calculates historical gross loss ratios for pools of similar loans with similar characteristics based on the proportion of actual charge-offs experienced to the total population of loans in the pool. The historical gross loss ratios are periodically updated based on actual charge-off experience. A historical valuation allowance is established for each pool of similar loans based upon the product of the historical gross loss ratio and the total dollar amount of the loans in the pool. The Corporation’s pools of similar loans include similarly risk-graded groups of commercial and industrial loans, commercial real estate loans, consumer real estate loans and consumer and other loans.

The components of the general valuation allowance include (i) the additional reserves allocated to specific loan portfolio segments as a result of applying an environmental risk adjustment factor to the base historical loss allocation, (ii) the additional reserves allocated to specific loan portfolio segments for loans to borrowers in distressed industries and (iii) the additional reserves that are not allocated to specific loan portfolio segments including allocations for groups of similar loans with risk characteristics that exceed certain concentration limits established by management.

The environmental adjustment factor is based upon a more qualitative analysis of risk and is calculated through a survey of senior officers who are involved in credit making decisions at a corporate-wide and/or regional level. On a quarterly basis, survey participants rate the degree of various risks utilizing a numeric scale that translates to varying grades of high, moderate or low levels of risk. The results are then input into a risk-weighting matrix to determine an appropriate environmental risk adjustment factor. The various risks that may be considered in the determination of the environmental adjustment factor include, among other things, (i) the experience, ability and effectiveness of the bank’s lending management and staff; (ii) the effectiveness of the Corporation’s loan policies, procedures and internal controls; (iii) changes in asset quality; (iv) the impact of legislative and governmental influences affecting industry sectors; (v) the effectiveness of the internal loan review function; (vi) the impact of competition on loan structuring and pricing; and (vii) the impact of rising interest rates on portfolio risk. In periods where the surveyed risks are perceived to be higher, the risk-weighting matrix will generally result in a higher environmental adjustment factor, which, in turn will result in higher levels of general valuation allowance allocations. The opposite holds true in periods where the surveyed risks are perceived to be lower. The environmental adjustment factor resulted in additional general valuation allowance allocations to the various loan portfolio segments totaling $10.8 million at March 31, 2012, $12.8 million at December 31, 2011 and $12.7 million at March 31, 2011.

During the fourth quarter of 2011, the Corporation refined its methodology for the determination of reserves allocated to specific loan portfolio segments to provide reserves for loans to borrowers in distressed industries. To determine the amount of the allocation for each loan portfolio segment, management calculates the weighted-average risk grade for all loans to borrowers in distressed industries by loan portfolio segment. A multiple is then applied to the amount by which the weighted-average risk grade for loans to borrowers in distressed industries exceeds the weighted-average risk grade for all pass-grade loans within the loan portfolio segment to derive an allocation factor for loans to borrowers in distressed industries. The amount of the allocation for each loan portfolio segment is the product of this allocation factor and the outstanding balance of pass-grade loans within the identified distressed industries that have a risk grade of 6 or higher. Reserves allocated for distressed industries totaled $5.7 million ($4.7 million related to commercial and industrial loans and $972 thousand related to commercial real estate loans) at March 31, 2012 and $5.0 million ($4.1 million related to commercial and industrial loans and $922 thousand related to commercial real estate loans) at December 31, 2011. This change in the Corporation’s methodology for the determination of reserves allocated to specific loan portfolio segments did not significantly impact the provision for loan losses recorded during 2011. Management identifies potential distressed industries by analyzing industry trends related to delinquencies, classifications and charge-offs. At March 31, 2012 and December 31, 2011, contractors were considered to be a distressed industry based on elevated levels of delinquencies, classifications and charge-offs relative to other industries within the Corporation’s loan portfolio. Furthermore, the Corporation determined, through a review of borrower financial information that, as a whole, contractors have experienced, among other things, decreased revenues, reduced backlog of work, compressed margins and little, if any, net income.

Certain general valuation allowances are not allocated to specific loan portfolio segments and are reported as the unallocated portion of the allowance for loan losses. Included in these general valuation allowances are allocations for groups of similar loans with risk characteristics that exceed certain concentration limits established by management and/or the Corporation’s board of directors. Concentration risk limits have been established, among other things, for certain industry concentrations, large balance and highly leveraged credit relationships that exceed specified risk grades, and loans originated with policy, credit and/or collateral exceptions that exceed specified risk grades. Additionally, general valuation allowances are provided for loans that did not undergo a separate, independent concurrence review during the underwriting process (generally those loans under $1.0 million at origination). The Corporation’s allowance methodology for general valuation allowances also includes a reduction factor for recoveries of prior charge-offs to compensate for the fact that historical loss allocations are based upon gross charge-offs rather than net.

The following table presents details of the unallocated portion of the allowance for loan losses.


	March 31,			December 31,			March 31,
	2012			2011			2011
Excessive industry concentrations	$	7,820		$	6,995		$	2,476
Large relationship concentrations		1,885			2,232			2,108
Highly-leveraged credit relationships		4,133			3,530			3,798
Policy exceptions		2,107			2,121			2,220
Credit and collateral exceptions		2,198			1,603			1,921
Loans not reviewed by concurrence		8,098			9,030			9,323
Adjustment for recoveries		(13,982	)		(13,071	)		(11,676	)
General macroeconomic risk		16,636			17,846			20,374

	$	28,895		$	30,286		$	30,544

The Corporation monitors whether or not the allowance for loan loss allocation model, as a whole, calculates an appropriate level of allowance for loan losses that moves in direct correlation to the general macroeconomic and loan portfolio conditions the Corporation experiences over time. In assessing the general macroeconomic trends/conditions, the Corporation analyzes trends in the components of the TLI, as well as any available information related to regional, national and international economic conditions and events and the impact such conditions and events may have on the Corporation and its customers. With regard to assessing loan portfolio conditions, the Corporation analyzes trends in weighted-average portfolio risk-grades, classified and non-performing loans and charge-off activity. In periods where general macroeconomic and loan portfolio conditions are in a deteriorating trend or remain at deteriorated levels, based on historical trends, the Corporation would expect to see the allowance for loan loss allocation model, as a whole, calculate higher levels of required allowances than in periods where general macroeconomic and loan portfolio conditions are in an improving trend or remain at an elevated level, based on historical trends.

The following table details activity in the allowance for loan losses by portfolio segment for the three months ended March 31, 2012 and 2011. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories.


	Commercial and Industrial			Commercial Real Estate			Consumer Real Estate			Consumer and Other			Unallocated			Total
March 31, 2012
Beginning balance	$	42,774		$	20,912		$	3,540		$	12,635		$	30,286		$	110,147
Provision for loan losses		4,766			1,441			(75	)		(3,641	)		(1,391	)		1,100
Charge-offs		(3,012	)		(2,842	)		(289	)		(1,985	)		—			(8,128	)
Recoveries		1,341			492			523			1,706			—			4,062

Net charge-offs		(1,671	)		(2,350	)		234			(279	)		—			(4,066	)

Ending balance	$	45,869		$	20,003		$	3,699		$	8,715		$	28,895		$	107,181

Period-end amount allocated to:
Loans individually evaluated for impairment	$	17,842		$	2,879		$	95		$	—		$	—		$	20,816
Loans collectively evaluated for impairment		28,027			17,124			3,604			8,715			28,895			86,365

Ending balance	$	45,869		$	20,003		$	3,699		$	8,715		$	28,895		$	107,181

March 31, 2011
Beginning balance	$	57,789		$	28,534		$	3,223		$	11,974		$	24,796		$	126,316
Provision for loan losses		1,841			(662	)		792			1,731			5,748			9,450
Charge-offs		(7,597	)		(3,877	)		(820	)		(2,302	)		—			(14,596	)
Recoveries		767			556			290			1,538			—			3,151

Net charge-offs		(6,830	)		(3,321	)		(530	)		(764	)		—			(11,445	)

Ending balance	$	52,800		$	24,551		$	3,485		$	12,941		$	30,544		$	124,321

Period-end amount allocated to:
Loans individually evaluated for impairment	$	31,065		$	7,640		$	—		$	—		$	—		$	38,705
Loans collectively evaluated for impairment		21,735			16,911			3,485			12,941			30,544			85,616

Ending balance	$	52,800		$	24,551		$	3,485		$	12,941		$	30,544		$	124,321

The Corporation’s recorded investment in loans as of March 31, 2012, December 31, 2011 and March 31, 2011 related to each balance in the allowance for loan losses by portfolio segment and disaggregated on the basis of the Corporation’s impairment methodology was as follows:


	Commercial and Industrial		Commercial Real Estate		Consumer Real Estate		Consumer and Other		Unearned Discounts			Total
March 31, 2012
Loans individually evaluated for impairment	$	178,521	$	226,266	$	2,577	$	535	$	—		$	407,899
Loans collectively evaluated for impairment		3,864,331		2,808,618		758,709		303,937		(16,781	)		7,718,814

Ending balance	$	4,042,852	$	3,034,884	$	761,286	$	304,472	$	(16,781	)	$	8,126,713

December 31, 2011
Loans individually evaluated for impairment	$	189,139	$	241,451	$	2,470	$	554	$	—		$	433,614
Loans collectively evaluated for impairment		3,727,728		2,779,376		760,339		311,982		(17,910	)		7,561,515

Ending balance	$	3,916,867	$	3,020,827	$	762,809	$	312,536	$	(17,910	)	$	7,995,129

March 31, 2011
Loans individually evaluated for impairment	$	269,900	$	295,214	$	—	$	—	$	—		$	565,114
Loans collectively evaluated for impairment		3,453,344		2,917,480		784,368		325,122		(20,348	)		7,459,966

Ending balance	$	3,723,244	$	3,212,694	$	784,368	$	325,122	$	(20,348	)	$	8,025,080

Note 4 - Goodwill and Other Intangible Assets

Goodwill and other intangible assets are presented in the table below. The increases in goodwill and certain other intangible assets were related to the acquisition of Stone Partners Inc. (“Stone”), a human resource consulting firm that specializes in compensation, benefits and outsourcing services, on January 1, 2012. Stone was based in Houston with additional offices in Dallas and Austin. Stone was fully integrated into Frost Insurance Agency subsequent to acquisition. The acquisition of Stone did not significantly impact the Corporation’s financial statements.


	March 31,		December 31,
	2012		2011
Goodwill	$	535,560	$	528,072

Other intangible assets:
Core deposits	$	7,469	$	8,234
Customer relationship		2,798		2,113
Non-compete agreements		766		257

	$	11,033	$	10,604

The estimated aggregate future amortization expense for intangible assets remaining as of March 31, 2012 is as follows:


Remainder of 2012	$	2,886
2013		3,115
2014		2,270
2015		1,490
2016		777
Thereafter		495

	$	11,033

Note 5 - Deposits

Deposits were as follows:


	March 31,		Percentage			December 31,		Percentage			March 31,		Percentage
	2012		of Total			2011		of Total			2011		of Total
Non-interest-bearing demand deposits:
Commercial and individual	$	6,006,806		35.5	%	$	5,848,840		34.9	%	$	4,903,053		33.3	%
Correspondent banks		331,114		2.0			370,275		2.2			290,099		2.0
Public funds		446,192		2.6			453,440		2.7			219,850		1.5

Total non-interest-bearing demand deposits		6,784,112		40.1			6,672,555		39.8			5,413,002		36.8
Interest-bearing deposits:
Private accounts:
Savings and interest checking		2,950,197		17.4			2,912,937		17.4			2,484,668		16.9
Money market accounts		5,750,104		34.0			5,664,780		33.8			5,243,830		35.6
Time accounts of $100,000 or more		532,544		3.2			533,682		3.2			609,166		4.2
Time accounts under $100,000		500,623		3.0			522,887		3.1			546,167		3.7

Total private accounts		9,733,468		57.6			9,634,286		57.5			8,883,831		60.4
Public funds:
Savings and interest checking		208,760		1.2			265,747		1.6			183,752		1.3
Money market accounts		42,488		0.3			44,590		0.3			85,745		0.6
Time accounts of $100,000 or more		136,817		0.8			136,422		0.8			139,221		0.9
Time accounts under $100,000		3,376		—			3,148		—			4,008		—

Total public funds		391,441		2.3			449,907		2.7			412,726		2.8

Total interest-bearing deposits		10,124,909		59.9			10,084,193		60.2			9,296,557		63.2

Total deposits	$	16,909,021		100.0	%	$	16,756,748		100.0	%	$	14,709,559		100.0	%

The following table presents additional information about the Corporation’s deposits:


	March 31,		December 31,		March 31,
	2012		2011		2011
Money market deposits obtained through brokers	$	—	$	24,500	$	24,852
Deposits from the Certificate of Deposit Account Registry Service (CDARS) deposits		25,541		45,005		48,005
Deposits from foreign sources (primarily Mexico)		830,685		744,669		759,297

Note 6 - Commitments and Contingencies

Financial Instruments with Off-Balance-Sheet Risk. In the normal course of business, the Corporation enters into various transactions, which, in accordance with generally accepted accounting principles are not included in its consolidated balance sheets. The Corporation enters into these transactions to meet the financing needs of its customers. These transactions include commitments to extend credit and standby letters of credit, which involve, to varying degrees, elements of credit risk and interest rate risk in excess of the amounts recognized in the consolidated balance sheets. The Corporation minimizes its exposure to loss under these commitments by subjecting them to credit approval and monitoring procedures.

The Corporation enters into contractual commitments to extend credit, normally with fixed expiration dates or termination clauses, at specified rates and for specific purposes. Substantially all of the Corporation’s commitments to extend credit are contingent upon customers maintaining specific credit standards at the time of loan funding. Standby letters of credit are written conditional commitments issued by the Corporation to guarantee the performance of a customer to a third party. In the event the customer does not perform in accordance with the terms of the agreement with the third party, the Corporation would be required to fund the commitment. The maximum potential amount of future payments the Corporation could be required to make is represented by the contractual amount of the commitment. If the commitment were funded, the Corporation would be entitled to seek recovery from the customer. The Corporation’s policies generally require that standby letter of credit arrangements contain security and debt covenants similar to those contained in loan agreements.

The Corporation considers the fees collected in connection with the issuance of standby letters of credit to be representative of the fair value of its obligation undertaken in issuing the guarantee. In accordance with applicable accounting standards related to guarantees, the Corporation defers fees collected in connection with the issuance of standby letters of credit. The fees are then recognized in income proportionately over the life of the standby letter of credit agreement. The deferred standby letter of credit fees represent the fair value of the Corporation’s potential obligations under the standby letter of credit guarantees.

Financial instruments with off-balance-sheet risk were as follows:


	March 31,		December 31,
	2012		2011
Commitments to extend credit	$	5,386,634	$	5,147,363
Standby letters of credit		205,692		235,903
Deferred standby letter of credit fees		1,379		1,488

Lease Commitments. The Corporation leases certain office facilities and office equipment under operating leases. Rent expense for all operating leases totaled $5.5 million during both the three months ended March 31, 2012 and 2011. There has been no significant change in the future minimum lease payments payable by the Corporation since December 31, 2011. See the 2011 Form 10-K for information regarding these commitments.

Litigation. The Corporation is subject to various claims and legal actions that have arisen in the course of conducting business. Management does not expect the ultimate disposition of these matters to have a material adverse impact on the Corporation’s financial statements.

Note 7 - Regulatory Matters

Regulatory Capital Requirements. Banks and bank holding companies are subject to various regulatory capital requirements administered by state and federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off-balance-sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators about components, risk weighting and other factors.

Quantitative measures established by regulations to ensure capital adequacy require the maintenance of minimum amounts and ratios (set forth in the table below) of total and Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined), and of Tier 1 capital to adjusted quarterly average assets (as defined).

Cullen/Frost’s and Frost Bank’s Tier 1 capital consists of shareholders’ equity excluding unrealized gains and losses on securities available for sale, the accumulated gain or loss on effective cash flow hedging derivatives, the net actuarial gain/loss on the Corporation’s defined benefit post-retirement benefit plans, goodwill and other intangible assets. Tier 1 capital for Cullen/Frost also includes $120 million of trust preferred securities issued by its unconsolidated subsidiary trust. Cullen/Frost’s and Frost Bank’s total capital is comprised of Tier 1 capital for each entity plus a permissible portion of the allowance for loan losses. The Corporation’s aggregate $100 million of floating rate subordinated notes are not included in Tier 1 capital but are included in total capital of Cullen/Frost.

The Tier 1 and total capital ratios are calculated by dividing the respective capital amounts by risk-weighted assets. Risk-weighted assets are calculated based on regulatory requirements and include total assets, excluding goodwill and other intangible assets, allocated by risk weight category, and certain off-balance-sheet items (primarily loan commitments). The leverage ratio is calculated by dividing Tier 1 capital by adjusted quarterly average total assets, which exclude goodwill and other intangible assets.

Actual and required capital ratios for Cullen/Frost and Frost Bank were as follows:


	Actual					Minimum Required for Capital Adequacy Purposes					Required to be Considered Well Capitalized
	Capital Amount		Ratio			Capital Amount		Ratio			Capital Amount		Ratio
March 31, 2012
Total Capital to Risk-Weighted Assets
Cullen/Frost	$	1,844,944		16.10	%	$	916,676		8.00	%	$	1,145,845		10.00	%
Frost Bank		1,657,936		14.48			916,245		8.00			1,145,307		10.00
Tier 1 Capital to Risk-Weighted Assets
Cullen/Frost		1,657,763		14.47			458,338		4.00			687,507		6.00
Frost Bank		1,550,755		13.54			458,123		4.00			687,184		6.00
Leverage Ratio
Cullen/Frost		1,657,763		8.68			764,255		4.00			955,319		5.00
Frost Bank		1,550,755		8.12			763,906		4.00			954,882		5.00
December 31, 2011
Total Capital to Risk-Weighted Assets
Cullen/Frost	$	1,835,428		16.24	%	$	903,970		8.00	%	$	1,129,962		10.00	%
Frost Bank		1,641,921		14.54			903,427		8.00			1,129,284		10.00
Tier 1 Capital to Risk-Weighted Assets
Cullen/Frost		1,625,281		14.38			451,985		4.00			677,977		6.00
Frost Bank		1,531,774		13.56			451,713		4.00			677,570		6.00
Leverage Ratio
Cullen/Frost		1,625,281		8.66			750,643		4.00			938,304		5.00
Frost Bank		1,531,774		8.17			750,249		4.00			937,811		5.00

Management believes that, as of March 31, 2012, Cullen/Frost and its bank subsidiary, Frost Bank, were “well capitalized” based on the ratios presented above.

Cullen/Frost is subject to the regulatory capital requirements administered by the Federal Reserve, while Frost Bank is subject to the regulatory capital requirements administered by the Office of the Comptroller of the Currency (“OCC”) (see the section captioned “Charter Conversion” below) and the Federal Deposit Insurance Corporation (“FDIC”). Regulatory authorities can initiate certain mandatory actions if Cullen/Frost or Frost Bank fail to meet the minimum capital requirements, which could have a direct material effect on the Corporation’s financial statements. Management believes, as of March 31, 2012, that Cullen/Frost and Frost Bank meet all capital adequacy requirements to which they are subject.

Dividend Restrictions. In the ordinary course of business, Cullen/Frost is dependent upon dividends from Frost Bank to provide funds for the payment of dividends to shareholders and to provide for other cash requirements. Banking regulations may limit the amount of dividends that may be paid. Approval by regulatory authorities is required if the effect of dividends declared would cause the regulatory capital of Frost Bank to fall below specified minimum levels. Approval is also required if dividends declared exceed the net profits for that year combined with the retained net profits for the preceding two years. Under the foregoing dividend restrictions and while maintaining its “well capitalized” status, at March 31, 2012, Frost Bank could pay aggregate dividends of up to $233.8 million to Cullen/Frost without prior regulatory approval.

Trust Preferred Securities. In accordance with the applicable accounting standard related to variable interest entities, the accounts of the Corporation’s wholly owned subsidiary trust, Cullen/Frost Capital Trust II, have not been included in the Corporation’s consolidated financial statements. However, the $120.0 million in trust preferred securities issued by this subsidiary trust have been included in the Tier 1 capital of Cullen/Frost for regulatory capital purposes pursuant to guidance from the Federal Reserve. On July 21, 2010, financial regulatory reform legislation entitled the “Dodd-Frank Wall Street Reform and Consumer Protection Act” (the “Dodd-Frank Act”) was signed into law. Certain provisions of the Dodd-Frank Act will require the Corporation to deduct, over three years beginning on January 1, 2013, all trust preferred securities from the Corporation’s Tier 1 capital. Nonetheless, excluding trust preferred securities from Tier 1 capital at March 31, 2012 would not affect the Corporation’s ability to meet all capital adequacy requirements to which it is subject.

Charter Conversion. On February 3, 2012, Frost Bank, the sole banking subsidiary of the Corporation, applied to the Texas Department of Banking to become a Texas state chartered bank and notified the Federal Reserve Bank of Dallas of its intention to become a state chartered bank and a member of the Federal Reserve System. If the applications are approved, the Texas Department of Banking and the Federal Reserve Bank of Dallas will become the primary regulators of Frost Bank, and Frost Bank will no longer be regulated by the OCC. Deposits at Frost Bank that are currently insured by the FDIC will continue to be so insured up to applicable limits.

Note 8 - Derivative Financial Instruments

The fair value of derivative positions outstanding is included in accrued interest receivable and other assets and accrued interest payable and other liabilities in the accompanying consolidated balance sheets and in the net change in each of these financial statement line items in the accompanying consolidated statements of cash flows.

Interest Rate Derivatives. The Corporation utilizes interest rate swaps, caps and floors to mitigate exposure to interest rate risk and to facilitate the needs of its customers. The Corporation’s objectives for utilizing these derivative instruments is described below:

The Corporation has entered into certain interest rate swap contracts that are matched to specific fixed-rate commercial loans or leases that the Corporation has entered into with its customers. These contracts have been designated as hedging instruments to hedge the risk of changes in the fair value of the underlying commercial loan/lease due to changes in interest rates. The related contracts are structured so that the notional amounts reduce over time to generally match the expected amortization of the underlying loan/lease.

In October 2007, the Corporation entered into three interest rate swap contracts on variable-rate loans with a total notional amount of $1.2 billion. The interest rate swap contracts were designated as hedging instruments in cash flow hedges with the objective of protecting the overall cash flows from the Corporation’s monthly interest receipts on a rolling portfolio of $1.2 billion of variable-rate loans outstanding throughout the 84-month period beginning in October 2007 and ending in October 2014 from the risk of variability of those cash flows such that the yield on the underlying loans would remain constant. As more fully discussed in the 2011 Form 10-K, the Corporation terminated portions of the hedges and settled portions of the interest rate swap contracts during November 2009 and terminated the remaining portions of the hedges and settled the remaining portions of the interest rate swap contracts during November 2010. The deferred accumulated after-tax gain applicable to the settled interest rate swap contracts included in accumulated other comprehensive income totaled $62.4 million at March 31, 2012. The deferred gain will be reclassified into earnings through October 2014.

In October 2008, the Corporation entered into an interest rate swap contract on junior subordinated deferrable interest debentures with a total notional amount of $120.0 million. The interest rate swap contract was designated as a hedging instrument in a cash flow hedge with the objective of protecting the quarterly interest payments on the Corporation’s $120.0 million of junior subordinated deferrable interest debentures issued to Cullen/Frost Capital Trust II throughout the five-year period beginning in December 2008 and ending in December 2013 from the risk of variability of those payments resulting from changes in the three-month LIBOR interest rate. Under the swap, the Corporation will pay a fixed interest rate of 5.47% and receive a variable interest rate of three-month LIBOR plus a margin of 1.55% on a total notional amount of $120.0 million, with quarterly settlements.

The Corporation has entered into certain interest rate swap, cap and floor contracts that are not designated as hedging instruments. These derivative contracts relate to transactions in which the Corporation enters into an interest rate swap, cap and/or floor with a customer while at the same time entering into an offsetting interest rate swap, cap and/or floor with another financial institution. In connection with each swap transaction, the Corporation agrees to pay interest to the customer on a notional amount at a variable interest rate and receive interest from the customer on a similar notional amount at a fixed interest rate. At the same time, the Corporation agrees to pay another financial institution the same fixed interest rate on the same notional amount and receive the same variable interest rate on the same notional amount. The transaction allows the Corporation’s customer to effectively convert a variable rate loan to a fixed rate. Because the Corporation acts as an intermediary for its customer, changes in the fair value of the underlying derivative contracts for the most part offset each other and do not significantly impact the Corporation’s results of operations.

The notional amounts and estimated fair values of interest rate derivative contracts outstanding at March 31, 2012 and December 31, 2011 are presented in the following table. The Corporation obtains dealer quotations to value its interest rate derivative contracts designated as hedges of cash flows, while the fair values of other interest rate derivative contracts are estimated utilizing internal valuation models with observable market data inputs.


	March 31, 2012					December 31, 2011
	Notional Amount		Estimated Fair Value			Notional Amount		Estimated Fair Value
Interest rate derivatives designated as hedges of fair value:
Commercial loan/lease interest rate swaps	$	67,517	$	(7,736	)	$	71,181	$	(8,376	)

Interest rate derivatives designated as hedges of cash flows:
Interest rate swap on junior subordinated deferrable interest debentures		120,000		(7,205	)		120,000		(7,807	)

Non-hedging interest rate derivatives:
Commercial loan/lease interest rate swaps		637,356		57,105			613,883		61,137
Commercial loan/lease interest rate swaps		637,356		(57,314	)		613,883		(61,393	)
Commercial loan/lease interest rate caps		20,000		28			20,000		50
Commercial loan/lease interest rate caps		20,000		(28	)		20,000		(50	)

The weighted-average rates paid and received for interest rate swaps outstanding at March 31, 2012 were as follows:


	Weighted-Average
	Interest Rate Paid			Interest Rate Received
Interest rate swaps:
Fair value hedge commercial loan/lease interest rate swaps		4.30	%		0.24	%
Cash flow hedge interest rate swaps on junior subordinated deferrable interest debentures		5.47			1.86
Non-hedging interest rate swaps		1.81			4.89
Non-hedging interest rate swaps		4.89			1.81

The weighted-average strike rate for outstanding interest rate caps was 3.10% at March 31, 2012.

Commodity Derivatives. The Corporation enters into commodity swaps and option contracts that are not designated as hedging instruments primarily to accommodate the business needs of its customers. Upon the origination of a commodity swap or option contract with a customer, the Corporation simultaneously enters into an offsetting contract with a third party to mitigate the exposure to fluctuations in commodity prices.

The notional amounts and estimated fair values of commodity derivative positions outstanding are presented in the following table. The Corporation obtains dealer quotations to value its commodity derivative positions.


			March 31, 2012					December 31, 2011
	Notional Units		Notional Amount		Estimated Fair Value			Notional Amount		Estimated Fair Value
Non-hedging commodity swaps:
Oil		Barrels		521	$	2,505			459	$	1,068
Oil		Barrels		521		(2,387	)		459		(963	)
Natural gas		MMBTUs		990		2,321			1,905		3,540
Natural gas		MMBTUs		990		(2,289	)		1,905		(3,480	)
Non-hedging commodity options:
Oil		Barrels		2,610		12,327			2,920		18,206
Oil		Barrels		2,610		(12,327	)		2,920		(18,206	)
Natural gas		MMBTUs		600		581			480		490
Natural gas		MMBTUs		600		(581	)		480		(490	)

Foreign Currency Derivatives. The Corporation enters into foreign currency forward contracts that are not designated as hedging instruments primarily to accommodate the business needs of its customers. Upon the origination of a foreign currency denominated transaction with a customer, the Corporation simultaneously enters into an offsetting contract with a third party to negate the exposure to fluctuations in foreign currency exchange rates. The Corporation also utilizes foreign currency forward contracts that are not designated as hedging instruments to mitigate the economic effect of fluctuations in foreign currency exchange rates on certain short-term, non-U.S. dollar denominated loans. The notional amounts and fair values of open foreign currency forward contracts were not significant at March 31, 2012 and December 31, 2011.

Gains, Losses and Derivative Cash Flows. For fair value hedges, the changes in the fair value of both the derivative hedging instrument and the hedged item are included in other non-interest income or other non-interest expense. The extent that such changes in fair value do not offset represents hedge ineffectiveness. Net cash flows from interest rate swaps on commercial loans/leases designated as hedging instruments in effective hedges of fair value are included in interest income on loans. For cash flow hedges, the effective portion of the gain or loss due to changes in the fair value of the derivative hedging instrument is included in other comprehensive income, while the ineffective portion (indicated by the excess of the cumulative change in the fair value of the derivative over that which is necessary to offset the cumulative change in expected future cash flows on the hedge transaction) is included in other non-interest income or other non-interest expense. Net cash flows from interest rate swaps on variable-rate loans designated as hedging instruments in effective hedges of cash flows and the reclassification from other comprehensive income of deferred gains associated with the termination of those hedges are included in interest income on loans. Net cash flows from the interest rate swap on junior subordinated deferrable interest debentures designated as a hedging instrument in an effective hedge of cash flows are included in interest expense on junior subordinated deferrable interest debentures. For non-hedging derivative instruments, gains and losses due to changes in fair value and all cash flows are included in other non-interest income and other non-interest expense.

Amounts included in the consolidated statements of income related to interest rate derivatives designated as hedges of fair value were as follows:


	Three Months Ended March 31,
	2012			2011
Commercial loan/lease interest rate swaps:
Amount of gain (loss) included in interest income on loans	$	(667	)	$	(1,005	)
Amount of (gain) loss included in other non-interest expense		(12	)		(9	)

Amounts included in the consolidated statements of income and in other comprehensive income for the period related to interest rate derivatives designated as hedges of cash flows were as follows:


	Three Months Ended March 31,
	2012			2011
Interest rate swaps on variable-rate loans:
Amount reclassified from accumulated other comprehensive income to interest income on loans	$	9,345		$	9,345
Interest rate swaps on junior subordinated deferrable interest debentures:
Amount reclassified from accumulated other comprehensive income to interest expense on junior subordinated deferrable interest debentures		1,033			1,086
Amount of gain (loss) recognized in other comprehensive income		(427	)		65

No ineffectiveness related to interest rate derivatives designated as hedges of cash flows was recognized in the consolidated statements of income during the reported periods. The accumulated net after-tax gain related to effective cash flow hedges included in accumulated other comprehensive income totaled $58.0 million at March 31, 2012 and $63.6 million at December 31, 2011. The Corporation currently expects approximately $16.1 million of the net after-tax gain related to effective cash flow hedges included in accumulated other comprehensive income at March 31, 2012 will be reclassified into earnings during the remainder of 2012. This amount represents management’s best estimate given current expectations about market interest rates and volumes related to loan pools underlying the terminated cash flow hedges. Because actual market interest rates and volumes related to loan pools underlying the terminated cash flow hedges may differ from management’s expectations, there can be no assurance as to the ultimate amount that will be reclassified into earnings during 2012.

As stated above, the Corporation enters into non-hedge related derivative positions primarily to accommodate the business needs of its customers. Upon the origination of a derivative contract with a customer, the Corporation simultaneously enters into an offsetting derivative contract with a third party. The Corporation recognizes immediate income based upon the difference in the bid/ask spread of the underlying transactions with its customers and the third party. Because the Corporation acts only as an intermediary for its customer, subsequent changes in the fair value of the underlying derivative contracts for the most part offset each other and do not significantly impact the Corporation’s results of operations.

Amounts included in the consolidated statements of income related to non-hedging interest rate and commodity derivative instruments are presented in the table below. Amounts included in the consolidated statements of income related to foreign currency derivatives during the reported periods were not significant.


	Three Months Ended March 31,
	2012			2011
Non-hedging interest rate derivatives:
Other non-interest income	$	782		$	274
Other non-interest expense		(47	)		(39	)
Non-hedging commodity derivatives:
Other non-interest income		37			383

Counterparty Credit Risk. Derivative contracts involve the risk of dealing with both bank customers and institutional derivative counterparties and their ability to meet contractual terms. Institutional counterparties must have an investment grade credit rating and be approved by the Corporation’s Asset/Liability Management Committee. The Corporation’s credit exposure on interest rate swaps is limited to the net favorable value and interest payments of all swaps by each counterparty, while the Corporation’s credit exposure on commodity swaps/options is limited to the net favorable value of all swaps/options by each counterparty. Credit exposure may be reduced by the amount of collateral pledged by the counterparty. There are no credit-risk-related contingent features associated with any of the Corporation’s derivative contracts. Certain derivative contracts with upstream financial institution counterparties may be terminated with respect to a party in the transaction, if such party does not have at least a minimum level rating assigned to either its senior unsecured long-term debt or its deposit obligations by certain third-party rating agencies.

The Corporation’s credit exposure relating to interest rate swaps and commodity swaps/options with bank customers was approximately $63.7 million at March 31, 2012. This credit exposure is partly mitigated as transactions with customers are generally secured by the collateral, if any, securing the underlying transaction being hedged. The Corporation had no credit exposure, net of collateral pledged, relating to interest rate swaps and commodity swaps/options with upstream financial institution counterparties at March 31, 2012. Collateral levels for upstream financial institution counterparties are monitored and adjusted as necessary.

The aggregate fair value of securities posted as collateral by the Corporation related to derivative contracts totaled $71.9 million at March 31, 2012. At such date, the Corporation also had $6.3 million in cash collateral on deposit with other financial institution counterparties.

Note 9 - Earnings Per Common Share

Earnings per common share is computed using the two-class method. Basic earnings per common share is computed by dividing net earnings allocated to common stock by the weighted-average number of common shares outstanding during the applicable period, excluding outstanding participating securities. Participating securities include non-vested stock awards/stock units and deferred stock units, though no actual shares of common stock related to non-vested stock units and deferred stock units have been issued. Non-vested stock awards/stock units and deferred stock units are considered participating securities because holders of these securities receive non-forfeitable dividends at the same rate as holders of the Corporation’s common stock. Diluted earnings per common share is computed using the weighted-average number of shares determined for the basic earnings per common share computation plus the dilutive effect of stock compensation using the treasury stock method.

The following table presents a reconciliation of the number of shares used in the calculation of basic and diluted earnings per common share.


	Three Months Ended March 31,
	2012		2011
Distributed earnings allocated to common stock	$	28,152	$	27,470
Undistributed earnings allocated to common stock		32,691		24,252

Net earnings allocated to common stock	$	60,843	$	51,722

Weighted-average shares outstanding for basic earnings per common share		61,200,627		61,018,169
Dilutive effect of stock compensation		332,674		316,295

Weighted-average shares outstanding for diluted earnings per common share		61,533,301		61,334,464

Note 10 - Stock-Based Compensation

A combined summary of activity in the Corporation’s active stock plans is presented in the following table.


						Non-Vested Stock Awards/Stock Units Outstanding				Stock Options Outstanding
	Shares Available for Grant			Director Deferred Stock Units Outstanding		Number of Shares		Weighted- Average Grant-Date Fair Value		Number of Shares			Weighted- Average Exercise Price
Balance, January 1, 2012		1,963,455			22,092		169,530	$	50.33		4,968,822		$	51.49
Granted		—			—		—		—		—			—
Stock options exercised		—			—		—		—		(108,800	)		50.94
Stock awards vested		—			—		—		—		—			—
Forfeited		1,875			—		—		—		(1,875	)		51.81
Cancelled/expired		(125	)		—		—		—		—

Balance, March 31, 2012		1,965,205			22,092		169,530	$	50.33		4,858,147		$	51.50

During the three months ended March 31, 2012 and 2011, proceeds from stock option exercises totaled $5.5 million and $5.8 million. During the three months ended March 31, 2012, 101,160 shares issued in connection with stock option exercises were new shares issued from available authorized shares, while 7,640 shares were issued from available treasury stock.

Stock-based compensation expense is recognized ratably over the requisite service period for all awards. Stock-based compensation expense was as follows:


	Three Months Ended March 31,
	2012		2011
Stock options	$	2,201	$	2,310
Non-vested stock awards/stock units		354		1,427

Total	$	2,555	$	3,737

Unrecognized stock-based compensation expense at March 31, 2012 was as follows:


Stock options	$	16,811
Non-vested stock awards/stock units		2,742

Total	$	19,553

Note 11 - Defined Benefit Plans

The components of the combined net periodic cost (benefit) for the Corporation’s defined benefit pension plans were as follows:


	Three Months Ended March 31,
	2012			2011
Expected return on plan assets, net of expenses	$	(2,603	)	$	(2,859	)
Interest cost on projected benefit obligation		1,950			1,973
Net amortization and deferral		1,229			783

Net periodic cost (benefit)	$	576		$	(103	)

The Corporation’s non-qualified defined benefit pension plan is not funded. No contributions to the qualified defined benefit pension plan were made during the three months ended March 31, 2012. The Corporation does not expect to make any contributions to the qualified defined benefit plan during the remainder of 2012.

Note 12 - Income Taxes

Income tax expense was as follows:


	Three Months Ended March 31,
	2012			2011
Current income tax expense	$	20,052		$	12,792
Deferred income tax benefit		(2,539	)		(139	)

Income tax expense, as reported	$	17,513		$	12,653

Effective tax rate		22.3	%		19.6	%

Net deferred tax liabilities totaled $119.3 million at March 31, 2012 and $123.7 million at December 31, 2011. No valuation allowance was recorded against deferred tax assets at March 31, 2012 as management believes that it is more likely than not that all of the deferred tax assets will be realized because they were supported by recoverable taxes paid in prior years. There were no unrecognized tax benefits during any of the reported periods. Interest and/or penalties related to income taxes are reported as a component of income tax expense. Such amounts were not significant during the reported periods.

The Corporation files income tax returns in the U.S. federal jurisdiction. The Company is no longer subject to U.S. federal income tax examinations by tax authorities for years before 2008.

Note 13 - Other Comprehensive Income (Loss)

The tax effects allocated to each component of other comprehensive income (loss) were as follows:


	Before Tax Amount			Tax Expense (Benefit)			Net of Tax Amount
Three months ended March 31, 2012:
Securities available for sale:
Change in net unrealized gain/loss during the period	$	1,882		$	658		$	1,224
Reclassification adjustment for net (gains) losses included in net income		491			172			319

Total securities available for sale		2,373			830			1,543
Defined-benefit post-retirement benefit plans:
Change in the net actuarial gain/loss		1,229			430			799
Derivatives:
Change in the accumulated gain/loss on effective cash flow hedge derivatives		(427	)		(150	)		(277	)
Reclassification adjustments for (gains) losses included in net income:
Interest rate swaps on variable-rate loans		(9,345	)		(3,271	)		(6,074	)
Interest rate swap on junior subordinated deferrable interest debentures		1,033			362			671

Total derivatives		(8,739	)		(3,059	)		(5,680	)

Total other comprehensive income	$	(5,137	)	$	(1,799	)	$	(3,338	)

Three months ended March 31, 2011:
Securities available for sale:
Change in net unrealized gain/loss during the period	$	8,290		$	2,902		$	5,388
Reclassification adjustment for net (gains) losses included in net income		(5	)		(2	)		(3	)

Total securities available for sale		8,285			2,900			5,385
Defined-benefit post-retirement benefit plans:
Change in the net actuarial gain/loss		783			274			509
Derivatives:
Change in the accumulated gain/loss on effective cash flow hedge derivatives		65			23			42
Reclassification adjustments for (gains) losses included in net income:
Interest rate swaps on variable-rate loans		(9,345	)		(3,271	)		(6,074	)
Interest rate swap on junior subordinated deferrable interest debentures		1,086			380			706

Total derivatives		(8,194	)		(2,868	)		(5,326	)

Total other comprehensive income	$	874		$	306		$	568

Activity in accumulated other comprehensive income, net of tax, was as follows:


									Accumulated
	Securities		Defined						Other
	Available		Benefit						Comprehensive
	For Sale		Plans			Derivatives			Income
Balance January 1, 2012	$	227,052	$	(42,958	)	$	63,640		$	247,734
Other comprehensive income (loss)		1,543		799			(5,680	)		(3,338	)

Balance March 31, 2012	$	228,595	$	(42,159	)	$	57,960		$	244,396

Balance January 1, 2011	$	96,012	$	(28,357	)	$	86,595		$	154,250
Other comprehensive income		5,385		509			(5,326	)		568

Balance March 31, 2011	$	101,397	$	(27,848	)	$	81,269		$	154,818

Note 14 - Operating Segments

The Corporation is managed under a matrix organizational structure whereby significant lines of business, including Banking and Frost Wealth Advisors (formerly Financial Management Group or “FMG”), overlap a regional reporting structure. The regions are primarily based upon geographic location and include Austin, Corpus Christi, Dallas, Fort Worth, Houston, Rio Grande Valley, San Antonio and Statewide. The Corporation is primarily managed based on the line of business structure. In that regard, all regions have the same lines of business, which have the same product and service offerings, have similar types and classes of customers and utilize similar service delivery methods. Pricing guidelines for products and services are the same across all regions. The regional reporting structure is primarily a means to scale the lines of business to provide a local, community focus for customer relations and business development.

The Corporation has two primary operating segments, Banking and Frost Wealth Advisors, that are delineated by the products and services that each segment offers. The Banking operating segment includes both commercial and consumer banking services, Frost Securities, Inc. and Frost Insurance Agency. Commercial banking services are provided to corporations and other business clients and include a wide array of lending and cash management products. Consumer banking services include direct lending and depository services. Frost Insurance Agency provides insurance brokerage services to individuals and businesses covering corporate and personal property and casualty products, as well as group health and life insurance products. Frost Securities, Inc. provides advisory and private equity services to middle market companies. The Frost Wealth Advisors operating segment includes fee-based services within private trust, retirement services, and financial management services, including personal wealth management and brokerage services. The third operating segment, Non-Banks, is for the most part the parent holding company, as well as certain other insignificant non-bank subsidiaries of the parent that, for the most part, have little or no activity. The parent company’s principal activities include the direct and indirect ownership of the Corporation’s banking and non-banking subsidiaries and the issuance of debt and equity. Its principal source of revenue is dividends from its subsidiaries.

The accounting policies of each reportable segment are the same as those of the Corporation except for the following items, which impact the Banking and Frost Wealth Advisors segments: (i) expenses for consolidated back-office operations and general overhead-type expenses such as executive administration, accounting and internal audit are allocated to operating segments based on estimated uses of those services, (ii) income tax expense for the individual segments is calculated essentially at the statutory rate, and (iii) the parent company records the tax expense or benefit necessary to reconcile to the consolidated total.

The Corporation uses a match-funded transfer pricing process to assess operating segment performance. The process helps the Corporation to (i) identify the cost or opportunity value of funds within each business segment, (ii) measure the profitability of a particular business segment by relating appropriate costs to revenues, (iii) evaluate each business segment in a manner consistent with its economic impact on consolidated earnings, and (iv) enhance asset and liability pricing decisions.

Summarized operating results by segment were as follows:


	Banking		Frost Wealth Advisors		Non-Banks			Consolidated
Revenues from (expenses to) external customers:
Three months ended:
March 31, 2012	$	196,273	$	25,997	$	(584	)	$	221,686
March 31, 2011		192,265		24,434		(2,607	)		214,092
Net income (loss):
Three months ended:
March 31, 2012	$	58,290	$	3,391	$	(648	)	$	61,033
March 31, 2011		51,853		1,670		(1,595	)		51,928

Note 15 - Fair Value Measurements

The fair value of an asset or liability is the price that would be received to sell that asset or paid to transfer that liability in an orderly transaction occurring in the principal market (or most advantageous market in the absence of a principal market) for such asset or liability. In estimating fair value, the Corporation utilizes valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. Such valuation techniques are consistently applied. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability. ASC Topic 820 establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows:

•

Level 1 Inputs - Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

•

Level 2 Inputs - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risks, etc.) or inputs that are derived principally from or corroborated by market data by correlation or other means.

•

Level 3 Inputs - Unobservable inputs for determining the fair values of assets or liabilities that reflect an entity’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities.

In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and the Corporation’s creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. The Corporation’s valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While management believes the Corporation’s valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Furthermore, the reported fair value amounts have not been comprehensively revalued since the presentation dates, and therefore, estimates of fair value after the balance sheet date may differ significantly from the amounts presented herein. A more detailed description of the valuation methodologies used for assets and liabilities measured at fair value is set forth below. Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally coincides with the Corporation’s monthly and/or quarterly valuation process.

Financial Assets and Financial Liabilities: Financial assets and financial liabilities measured at fair value on a recurring basis include the following:

Securities Available for Sale. U.S. Treasury securities are reported at fair value utilizing Level 1 inputs. Other securities classified as available for sale are reported at fair value utilizing Level 2 inputs. For these securities, the Corporation obtains fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things.

The Corporation reviews the prices supplied by the independent pricing service, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. In general, the Corporation does not purchase investment portfolio securities that are esoteric or that have a complicated structure. The Corporation’s entire portfolio consists of traditional investments, nearly all of which are U.S. Treasury obligations, federal agency bullet or mortgage pass-through securities, or general obligation or revenue based municipal bonds. Pricing for such instruments is fairly generic and is easily obtained. From time to time, the Corporation will validate, on a sample basis, prices supplied by the independent pricing service by comparison to prices obtained from third-party sources or derived using internal models.

Trading Securities. U.S. Treasury securities and exchange-listed common stock are reported at fair value utilizing Level 1 inputs. Other securities classified as trading are reported at fair value utilizing Level 2 inputs in the same manner as described above for securities available for sale.

Derivatives. Derivatives are generally reported at fair value utilizing Level 2 inputs, except for foreign currency contracts, which are reported at fair value utilizing Level 1 inputs. The Corporation obtains dealer quotations to value its prime-rate loan swaps, the swap related to its junior subordinated deferrable interest debentures and commodity swaps/options. The

Corporation utilizes internally developed valuation models and/or third-party models with observable market data inputs to validate the valuations provided by the dealers. Though there has never been a significant discrepancy in the valuations, should such a significant discrepancy arise, the Corporation would obtain price verification from a third-party dealer. The Corporation utilizes internal valuation models with observable market data inputs to estimate fair values of customer interest rate swaps, caps and floors. The Corporation also obtains dealer quotations for these derivatives for comparative purposes to assess the reasonableness of the model valuations. In cases where significant credit valuation adjustments are incorporated into the estimation of fair value, reported amounts are considered to have been derived utilizing Level 3 inputs.

For purposes of potential valuation adjustments to its derivative positions, the Corporation evaluates the credit risk of its counterparties as well as that of the Corporation. Accordingly, the Corporation has considered factors such as the likelihood of default by the Corporation and its counterparties, its net exposures, and remaining contractual life, among other things, in determining if any fair value adjustments related to credit risk are required. Counterparty exposure is evaluated by netting positions that are subject to master netting arrangements, as well as considering the amount of collateral securing the position. The Corporation reviews its counterparty exposure on a regular basis, and, when necessary, appropriate business actions are taken to adjust the exposure. The Corporation also utilizes this approach to estimate its own credit risk on derivative liability positions. To date, the Corporation has not realized any significant losses due to a counterparty’s inability to pay any net uncollateralized position. The change in value of derivative assets and derivative liabilities attributable to credit risk was not significant during the reported periods.

The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of March 31, 2012 and December 31, 2011, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value:


	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
March 31, 2012
Securities available for sale:
U.S. Treasury	$	3,048,048	$	—	$	—	$	3,048,048
U.S. government agencies/corporations		—		250,782		—		250,782
Residential mortgage-backed securities		—		3,123,965		—		3,123,965
States and political subdivisions		—		2,107,411		—		2,107,411
Other		—		38,009		—		38,009
Trading account securities:
U.S. Treasury		13,409		—		—		13,409
States and political subdivisions		—		3,437		—		3,437
Derivative assets:
Interest rate swaps, caps and floors		—		56,523		610		57,133
Commodity and foreign exchange derivatives		—		17,734		—		17,734
Derivative liabilities:
Interest rate swaps, caps and floors		—		72,283		—		72,283
Commodity and foreign exchange derivatives		6		17,584		—		17,590
December 31, 2011
Securities available for sale:
U.S. Treasury	$	2,056,732	$	—	$	—	$	2,056,732
U.S. government agencies/corporations		—		250,884		—		250,884
Residential mortgage-backed securities		—		3,289,270		—		3,289,270
States and political subdivisions		—		2,154,813		—		2,154,813
Other		—		38,001		—		38,001
Trading account securities:
U.S. Treasury		13,609		—		—		13,609
Derivative assets:
Interest rate swaps, caps and floors		—		60,498		689		61,187
Commodity and foreign exchange derivatives		7		23,304		—		23,311
Derivative liabilities:
Interest rate swaps, caps and floors		—		77,626		—		77,626
Commodity and foreign exchange derivatives		—		23,139		—		23,139

The following table reconciles the beginning and ending balances of derivative assets, which consist of interest rate swaps sold to loan customers, measured at fair value on a recurring basis using significant unobservable (Level 3) inputs during the three months ended March 31, 2012 and 2011:


	Three Months Ended March 31,
	2012			2011
Balance, beginning of period	$	689		$	1,090
Cash settlements		(97	)		(112	)
Realized gains (losses) included in other non-interest income		(22	)		(35	)
Realized gains (losses) included in other non-interest expense		40			39

Balance, end of period	$	610		$	982

The significant unobservable (Level 3) inputs used in the fair value measurement of the Corporation’s interest rate swaps sold to loan customers included in the above table primarily relate to the probability of default and loss severity in the event of default. The probability of default is determined by the underlying risk grade of the loan (see Note 3 – Loans) underlying the interest rate swap in that the probability of default increases as a loan’s risk grade deteriorates, while the loss severity is estimated through an analysis of the collateral supporting both the underlying loan and interest rate swap. Generally, a change in the assumption used for the probability of default is accompanied by a directionally similar change in the assumption used for the loss severity. As March 31, 2012, the weighted-average risk grade of loans underlying interest rate swaps measured at fair value using significant unobservable (Level 3) inputs was 11.2. The loss severity in the event of default on the interest rate swaps ranged from 10.0% to 50.0%, with the weighted-average loss severity being 22.5%.

Certain financial assets and financial liabilities are measured at fair value on a nonrecurring basis; that is, the instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). Financial assets measured at fair value on a non-recurring basis during the reported periods include certain impaired loans reported at the fair value of the underlying collateral if repayment is expected solely from the collateral. Collateral values are estimated using Level 2 inputs based on observable market data, typically in the case of real estate collateral, or Level 3 inputs based on customized discounting criteria, typically in the case of non-real estate collateral such as inventory, accounts receivable, equipment or other business assets.

The following table presents impaired loans that were remeasured and reported at fair value through a specific valuation allowance allocation of the allowance for loan losses based upon the fair value of the underlying collateral during the three months ended March 31, 2012 and 2011.


	Three Months Ended March 31, 2012					Three Months Ended March 31, 2011
	Level 2			Level 3		Level 2			Level 3
Carrying value of impaired loans before allocations	$	10,943		$	—	$	11,787		$	2,633
Specific valuation allowance allocations		(2,497	)		—		(3,205	)		(752	)

Fair value	$	8,446		$	—	$	8,582		$	1,881

The significant unobservable (Level 3) inputs used in the fair value measurement of collateral for collateral-dependent impaired loans included in the above table primarily relate to customized discounting criteria applied to the customer’s reported amount of collateral. The amount of the collateral discount depends upon the marketability of the underlying collateral. As the Corporation’s primary objective in the event of default would be to monetize the collateral to settle the outstanding balance of the loan, less marketable collateral would receive a larger discount. During the reported periods, collateral discounts ranged from 20% in the case of accounts receivable collateral to 50% in the case of inventory collateral.

Non-Financial Assets and Non-Financial Liabilities: The Corporation has no non-financial assets or non-financial liabilities measured at fair value on a recurring basis. Certain non-financial assets measured at fair value on a non-recurring basis include foreclosed assets (upon initial recognition or subsequent impairment), non-financial assets and non-financial liabilities measured at fair value in the second step of a goodwill impairment test, and intangible assets and other non-financial long-lived assets measured at fair value for impairment assessment. Non-financial assets measured at fair value on a non-recurring basis during the reported periods include certain foreclosed assets which, upon initial recognition, were remeasured and reported at fair value through a charge-off to the allowance for loan losses and certain foreclosed assets which, subsequent to their initial recognition, were remeasured at fair value through a write-down included in other non-interest expense. The fair value of a foreclosed asset is estimated using Level 2 inputs based on observable market data or Level 3 inputs based on customized discounting criteria. During the reported periods, all fair value measurements for foreclosed assets utilized Level 2 inputs.

The following table presents foreclosed assets that were remeasured and reported at fair value during the three months ended March 31, 2012 and 2011:


	Three Months Ended March 31,
	2012			2011
Foreclosed assets remeasured at initial recognition:
Carrying value of foreclosed assets prior to remeasurement	$	1,386		$	8,804
Charge-offs recognized in the allowance for loan losses		(315	)		(1,370	)

Fair value	$	1,071		$	7,434

Foreclosed assets remeasured subsequent to initial recognition:
Carrying value of foreclosed assets prior to remeasurement	$	372		$	936
Write-downs included in other non-interest expense		(75	)		(241	)

Fair value	$	297		$	695

Charge-offs recognized upon loan foreclosures are generally offset by general or specific allocations of the allowance for loan losses and generally do not, and did not during the reported periods, significantly impact the Corporation’s provision for loan losses. Regulatory guidelines require the Corporation to reevaluate the fair value of other real estate owned on at least an annual basis. While the Corporation’s policy is to comply with the regulatory guidelines, the Corporation’s general practice is to reevaluate the fair value of other real estate owned on a quarterly basis. Thus, appraisals are never considered to be outdated, and the Corporation does not make any adjustments to the appraised values. The fair value of other real estate owned is monitored/evaluated by a third-party service and reviewed with management on a quarterly basis.

FASB ASC Topic 825 requires disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis. A detailed description of the valuation methodologies used in estimating the fair value of financial instruments is set forth in the 2011 Form 10-K.

The estimated fair values of financial instruments that are reported at amortized cost in the Corporation’s consolidated balance sheets, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value, were as follows:


	March 31, 2012				December 31, 2011
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Financial assets:
Level 2 inputs:
Cash and cash equivalents	$	2,128,734	$	2,128,734	$	2,907,592	$	2,907,592
Securities held to maturity		365,603		402,829		365,996		404,461
Cash surrender value of life insurance policies		135,035		135,035		133,967		133,967
Accrued interest receivable		61,833		61,833		78,869		78,869
Level 3 inputs:
Loans, net		8,019,532		8,119,248		7,884,982		7,951,742
Financial liabilities:
Level 2 inputs:
Deposits		16,909,021		16,909,615		16,756,748		16,757,708
Federal funds purchased and repurchase agreements		637,098		637,098		722,202		722,202
Junior subordinated deferrable interest debentures		123,712		123,712		123,712		123,712
Subordinated notes payable and other borrowings		100,022		86,094		100,026		100,101
Accrued interest payable		2,212		2,212		4,431		4,431

Under ASC Topic 825, entities may choose to measure eligible financial instruments at fair value at specified election dates. The fair value measurement option (i) may be applied instrument by instrument, with certain exceptions, (ii) is generally irrevocable and (iii) is applied only to entire instruments and not to portions of instruments. Unrealized gains and losses on items for which the fair value measurement option has been elected must be reported in earnings at each subsequent reporting date. During the reported periods, the Corporation had no financial instruments measured at fair value under the fair value measurement option.

Note 16 - Accounting Standards Updates

ASU No. 2011-03, “Transfers and Servicing (Topic 860) - Reconsideration of Effective Control for Repurchase Agreements.” ASU 2011-03 is intended to improve financial reporting of repurchase agreements and other agreements that both entitle and obligate a transferor to repurchase or redeem financial assets before their maturity. ASU 2011-03 removes from the assessment of effective control (i) the criterion requiring the transferor to have the ability to repurchase or redeem the financial assets on substantially the agreed terms, even in the event of default by the transferee, and (ii) the collateral maintenance guidance related to that criterion. ASU 2011-03 became effective for the Corporation on January 1, 2012 and did not have a significant impact on the Corporation’s financial statements.

ASU 2011-04, “Fair Value Measurement (Topic 820) - Amendments to Achieve Common Fair Value Measurements and Disclosure Requirements in U.S. GAAP and IFRSs.” ASU 2011-04 amends Topic 820, “Fair Value Measurements and Disclosures,” to converge the fair value measurement guidance in U.S. generally accepted accounting principles and International Financial Reporting Standards. ASU 2011-04 clarifies the application of existing fair value measurement requirements, changes certain principles in Topic 820 and requires additional fair value disclosures. ASU 2011-04 became effective for the Corporation on January 1, 2012 and, aside from new disclosures included in Note 15 – Fair Value Measurements, did not have a significant impact on the Corporation’s financial statements.

ASU 2011-05, “Comprehensive Income (Topic 220) - Presentation of Comprehensive Income.” ASU 2011-05 amends Topic 220, “Comprehensive Income,” to require that all non-owner changes in stockholders’ equity be presented in either a single continuous statement of comprehensive income or in two separate but consecutive statements. Additionally, ASU 2011-05 requires entities to present, on the face of the financial statements, reclassification adjustments for items that are reclassified from other comprehensive income to net income in the statement or statements where the components of net income and the components of other comprehensive income are presented. The option to present components of other comprehensive income as part of the statement of changes in stockholders’ equity was eliminated. ASU 2011-05 became effective for the Corporation on January 1, 2012; however, certain provisions related to the presentation of reclassification adjustments have been deferred by ASU 2011-12 “Comprehensive Income (Topic 220) – Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05,” as further discussed below. In connection with the application of ASU 2011-05, the Corporation’s financial statements now include separate statements of comprehensive income and additional footnote disclosures (see Note 13 - Other Comprehensive Income).

ASU 2011-08, “Intangibles – Goodwill and Other (Topic 350) - Testing Goodwill for Impairment.” ASU 2011-08 amends Topic 350, “Intangibles – Goodwill and Other,” to give entities the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, an entity determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then performing the two-step impairment test is unnecessary. However, if an entity concludes otherwise, then it is required to perform the first step of the two-step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit. ASU 2011-08 became effective for the Corporation on January 1, 2012 and did not have a significant impact on the Corporation’s financial statements.

ASU 2011-11, “Balance Sheet (Topic 210) - “Disclosures about Offsetting Assets and Liabilities.” ASU 2011-11 amends Topic 210, “Balance Sheet,” to require an entity to disclose both gross and net information about financial instruments, such as sales and repurchase agreements and reverse sale and repurchase agreements and securities borrowing/lending arrangements, and derivative instruments that are eligible for offset in the statement of financial position and/or subject to a master netting arrangement or similar agreement. ASU 2011-11 is effective for annual and interim periods beginning on January 1, 2013, and is not expected to have a significant impact on the Corporation’s financial statements.

ASU 2011-12 “Comprehensive Income (Topic 220) - Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards Update No. 2011-05.” ASU 2011-12 defers changes in ASU No. 2011-05 that relate to the presentation of reclassification adjustments to allow the FASB time to redeliberate whether to require presentation of such adjustments on the face of the financial statements to show the effects of reclassifications out of accumulated other comprehensive income on the components of net income and other comprehensive income. ASU 2011-12 allows entities to continue to report reclassifications out of accumulated other comprehensive income consistent with the presentation requirements in effect before ASU No. 2011-05. All other requirements in ASU No. 2011-05 are not affected by ASU No. 2011-12. ASU 2011-12 became effective for the Corporation on January 1, 2012 and did not have a significant impact on the Corporation’s financial statements.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Financial Review

Cullen/Frost Bankers, Inc.

The following discussion should be read in conjunction with the Corporation’s consolidated financial statements, and notes thereto, for the year ended December 31, 2011, included in the 2011 Form 10-K. Operating results for the three months ended March 31, 2012 are not necessarily indicative of the results for the year ending December 31, 2012 or any future period.

Dollar amounts in tables are stated in thousands, except for per share amounts.

Forward-Looking Statements and Factors that Could Affect Future Results

Certain statements contained in this Quarterly Report on Form 10-Q that are not statements of historical fact constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 (the “Act”), notwithstanding that such statements are not specifically identified as such. In addition, certain statements may be contained in the Corporation’s future filings with the SEC, in press releases, and in oral and written statements made by or with the approval of the Corporation that are not statements of historical fact and constitute forward-looking statements within the meaning of the Act. Examples of forward-looking statements include, but are not limited to: (i) projections of revenues, expenses, income or loss, earnings or loss per share, the payment or nonpayment of dividends, capital structure and other financial items; (ii) statements of plans, objectives and expectations of Cullen/Frost or its management or Board of Directors, including those relating to products or services; (iii) statements of future economic performance; and (iv) statements of assumptions underlying such statements. Words such as “believes”, “anticipates”, “expects”, “intends”, “targeted”, “continue”, “remain”, “will”, “should”, “may” and other similar expressions are intended to identify forward-looking statements but are not the exclusive means of identifying such statements.

Forward-looking statements involve risks and uncertainties that may cause actual results to differ materially from those in such statements. Factors that could cause actual results to differ from those discussed in the forward-looking statements include, but are not limited to:

•

Local, regional, national and international economic conditions and the impact they may have on the Corporation and its customers and the Corporation’s assessment of that impact.

•

Volatility and disruption in national and international financial markets.

•

Government intervention in the U.S. financial system.

•

Changes in the mix of loan geographies, sectors and types or the level of non-performing assets and charge-offs.

•

Changes in estimates of future reserve requirements based upon the periodic review thereof under relevant regulatory and accounting requirements.

•

The effects of and changes in trade and monetary and fiscal policies and laws, including the interest rate policies of the Federal Reserve Board.

•

Inflation, interest rate, securities market and monetary fluctuations.

•

The effect of changes in laws and regulations (including laws and regulations concerning taxes, banking, securities and insurance) with which the Corporation and its subsidiaries must comply.

•

The soundness of other financial institutions.

•

Political instability.

•

Impairment of the Corporation’s goodwill or other intangible assets.

•

Acts of God or of war or terrorism.

•

The timely development and acceptance of new products and services and perceived overall value of these products and services by users.

•

Changes in consumer spending, borrowings and savings habits.

•

Changes in the financial performance and/or condition of the Corporation’s borrowers.

•

Technological changes.

•

Acquisitions and integration of acquired businesses.

•

The ability to increase market share and control expenses.

•

The Corporation’s ability to attract and retain qualified employees.

•

Changes in the competitive environment in the Corporation’s markets and among banking organizations and other financial service providers.

•

The effect of changes in accounting policies and practices, as may be adopted by the regulatory agencies, as well as the Public Company Accounting Oversight Board, the Financial Accounting Standards Board and other accounting standard setters.

•

Changes in the reliability of the Corporation’s vendors, internal control systems or information systems.

•

Changes in the Corporation’s liquidity position.

•

Changes in the Corporation’s organization, compensation and benefit plans.

•

The costs and effects of legal and regulatory developments including the resolution of legal proceedings or regulatory or other governmental inquiries and the results of regulatory examinations or reviews.

•

Greater than expected costs or difficulties related to the integration of new products and lines of business.

•

The Corporation’s success at managing the risks involved in the foregoing items.

Forward-looking statements speak only as of the date on which such statements are made. The Corporation undertakes no obligation to update any forward-looking statement to reflect events or circumstances after the date on which such statement is made, or to reflect the occurrence of unanticipated events.

Application of Critical Accounting Policies and Accounting Estimates

The accounting and reporting policies followed by the Corporation conform, in all material respects, to accounting principles generally accepted in the United States and to general practices within the financial services industry. The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. While the Corporation bases estimates on historical experience, current information and other factors deemed to be relevant, actual results could differ from those estimates.

The Corporation considers accounting estimates to be critical to reported financial results if (i) the accounting estimate requires management to make assumptions about matters that are highly uncertain and (ii) different estimates that management reasonably could have used for the accounting estimate in the current period, or changes in the accounting estimate that are reasonably likely to occur from period to period, could have a material impact on the Corporation’s financial statements. Accounting policies related to the allowance for loan losses are considered to be critical, as these policies involve considerable subjective judgment and estimation by management.

For additional information regarding critical accounting policies, refer to Note 1 - Summary of Significant Accounting Policies in the notes to consolidated financial statements and the sections captioned “Application of Critical Accounting Policies” and “Allowance for Loan Losses” in Management’s Discussion and Analysis of Financial Condition and Results of Operations included in the 2011 Form 10-K. There have been no significant changes in the Corporation’s application of critical accounting policies related to the allowance for loan losses since December 31, 2011.

Overview

A discussion of the Corporation’s results of operations is presented below. Certain reclassifications have been made to make prior periods comparable. Taxable-equivalent adjustments are the result of increasing income from tax-free loans and securities by an amount equal to the taxes that would be paid if the income were fully taxable based on a 35% federal income tax rate, thus making tax-exempt asset yields comparable to taxable asset yields.

Results of Operations

Net income totaled $61.0 million, or $0.99 diluted per common share, for the three months ended March 31, 2012 compared to $51.9 million, or $0.85 diluted per common share, for the three months ended March 31, 2011 and $55.4 million, or $0.90 diluted per common share, for the three months ended December 31, 2011.

Selected income statement data and other selected data for the comparable periods was as follows:


	Three Months Ended
	March 31,			December 31,			March 31,
	2012			2011			2011
Taxable-equivalent net interest income	$	164,707		$	165,340		$	156,638
Taxable-equivalent adjustment		15,000			15,017			14,879

Net interest income		149,707			150,323			141,759
Provision for loan losses		1,100			—			9,450

Net interest income after provision for loan losses		148,607			150,323			132,309
Non-interest income		71,979			67,660			72,333
Non-interest expense		142,040			143,833			140,061

Income before income taxes		78,546			74,150			64,581
Income taxes		17,513			18,736			12,653

Net income	$	61,033		$	55,414		$	51,928


Earnings per common share - basic	$	0.99		$	0.90		$	0.85
Earnings per common share - diluted		0.99			0.90			0.85
Dividends per common share		0.46			0.46			0.45

Return on average assets		1.23	%		1.12	%		1.19	%
Return on average equity		10.59			9.74			10.11
Average shareholders’ equity to average total assets		11.63			11.53			11.78

Net income for the three months ended March 31, 2012 increased $9.1 million, or 17.5%, compared to the same period in 2011. The increase was primarily the result of a $8.4 million decrease in the provision for loan losses and a $7.9 million increase in net interest income partly offset by a $4.9 million increase in income tax expense, a $2.0 million increase in non-interest expense and a $354 thousand decrease in non-interest income.

Net income for the first quarter of 2012 increased $5.6 million, or 10.1%, from the fourth quarter of 2011. The increase was primarily the result of a $4.3 million increase in non-interest income, a $1.8 million decrease in non-interest expense and a $1.2 million decrease in income tax expense partly offset by a $1.1 million increase in the provision for loan losses and a $616 thousand decrease in net interest income.

Details of the changes in the various components of net income are further discussed below.

Net Interest Income

Net interest income is the difference between interest income on earning assets, such as loans and securities, and interest expense on liabilities, such as deposits and borrowings, which are used to fund those assets. Net interest income is the Corporation’s largest source of revenue, representing 67.5% of total revenue during the first three months of 2012. Net interest margin is the ratio of taxable-equivalent net interest income to average earning assets for the period. The level of interest rates and the volume and mix of earning assets and interest-bearing liabilities impact net interest income and net interest margin.

The Federal Reserve influences the general market rates of interest, including the deposit and loan rates offered by many financial institutions. The Corporation’s loan portfolio is significantly affected by changes in the prime interest rate. The prime interest rate, which is the rate offered on loans to borrowers with strong credit, remained at 3.25% for the entire year in 2011 and through the first quarter of 2012. The Corporation’s loan portfolio is also impacted, to a lesser extent, by changes in the London Interbank Offered Rate (LIBOR). At March 31, 2012, the one-month and three-month U.S. dollar LIBOR rates were 0.24% and 0.47%, respectively, while at March 31, 2011, the one-month and three-month U.S. dollar LIBOR rates were 0.24% and 0.31%, respectively. The intended federal funds rate, which is the cost of immediately available overnight funds, remained at zero to 0.25% for the entire year in 2011 and through the first quarter of 2012.

The Corporation’s balance sheet has historically been asset sensitive, meaning that earning assets generally reprice more quickly than interest-bearing liabilities. Therefore, the Corporation’s net interest margin was likely to increase in sustained periods of rising interest rates and decrease in sustained periods of declining interest rates. During the fourth quarter of 2007, in an effort to make the Corporation’s balance sheet less sensitive to changes in interest rates, the Corporation entered into various interest rate swaps which effectively converted certain variable-rate loans into fixed-rate instruments for a period of time. During the fourth quarter of 2008, the Corporation also entered into an interest rate swap which effectively converted variable-rate debt into fixed-rate debt for a period of time. As a result of these actions, the Corporation’s balance sheet was more interest-rate neutral and changes in interest rates had a less significant impact on the Corporation’s net interest margin than would have otherwise been the case. During the fourth quarter of 2009, a portion of the interest rate swaps on variable-rate loans were terminated, while the remaining interest rate swaps on variable-rate loans were terminated during the fourth quarter of 2010. These actions increased the asset sensitivity of the Corporation’s balance sheet. The deferred accumulated after-tax gain applicable to the settled interest rate contracts included in accumulated other comprehensive income totaled $62.4 million at March 31, 2012. The deferred gain will be reclassified into earnings through October 2014. See Note 8 - Derivative Financial Instruments in the accompanying notes to consolidated financial statements included elsewhere in this report for additional information related to these interest rate swaps.

The Corporation is primarily funded by core deposits, with non-interest-bearing demand deposits historically being a significant source of funds. This lower-cost funding base is expected to have a positive impact on the Corporation’s net interest income and net interest margin in a rising interest rate environment. As discussed in the section captioned “Supervision and Regulation” included in Item 1. Business, of the 2011 Form 10-K, the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) repealed the federal prohibitions on the payment of interest on demand deposits, thereby permitting depository institutions to pay interest on business transaction and other accounts beginning July 21, 2011. Although the ultimate impact of this legislation on the Corporation has not yet been determined, the Corporation may begin to incur interest costs associated with demand deposits in the future as market conditions warrant. See Item 3. Quantitative and Qualitative Disclosures About Market Risk elsewhere in this report for information about the expected impact of this legislation on the Corporation’s sensitivity to interest rates. Further analysis of the components of the Corporation’s net interest margin is presented below.

The following table presents the changes in taxable-equivalent net interest income and identifies the changes due to differences in the average volume of earning assets and interest-bearing liabilities and the changes due to changes in the average interest rate on those assets and liabilities. The changes in net interest income due to changes in both average volume and average interest rate have been allocated to the average volume change or the average interest rate change in proportion to the absolute amounts of the change in each. The comparisons between the quarters include an additional change factor that shows the effect of the difference in the number of days in each period, as further discussed below.


	First Quarter			First Quarter
	2012 vs.			2012 vs.
	Fourth Quarter			First Quarter
	2011			2011
Due to changes in average volume	$	2,291		$	18,940
Due to changes in average interest rates		(1,127	)		(12,681	)
Due to difference in the number of days in each of the comparable periods		(1,797	)		1,810

Total change	$	(633	)	$	8,069

Taxable-equivalent net interest income for the three months ended March 31, 2012 increased $8.1 million, or 5.2%, compared to the same period in 2011. Taxable-equivalent net interest income for the first quarter of 2012 included 91 days compared to 90 days for the first quarter of 2011 as a result of leap year. The additional day added approximately $1.8 million to taxable-equivalent net interest income during the first quarter of 2012. Excluding the impact of the additional day during the first quarter of 2012 results in an effective increase in taxable-equivalent net interest income of approximately $6.3 million during the first quarter of 2012, which was primarily related to an increase in the average volume of interest-earning assets partly offset by a decrease in the net interest margin. The average volume of interest-earning assets for the first quarter of 2012 increased $2.3 billion compared to the same period in 2011. Over the same time frame, the net interest margin decreased 30 basis points from 4.03% in 2011 to 3.73% in 2012. The decrease in the net interest margin was partly due to an increase in the relative proportion of average interest-earning assets invested in lower-yielding, taxable securities during 2012 compared to 2011 while the relative proportion of average interest-earning assets invested in higher-yielding loans decreased. The impact of this shift was partly mitigated by a decrease in the relative proportion of average interest-earning assets invested in lower-yielding interest-bearing deposits. The net interest margin was also negatively impacted by a decrease in the average yield on securities, as further discussed below. The average yield on interest-earning assets decreased 45 basis points from 4.34% in the first quarter of 2011 to 3.89% in the first quarter of 2012 while the average cost of funds decreased 21 basis points from 0.47% in the first quarter of 2011 to 0.26% in the first quarter of 2012. The average yield on

interest-earning assets is primarily impacted by changes in market interest rates as well as changes in the volume and relative mix of interest-earning assets. As stated above, market interest rates have remained at historically low levels during the reported periods. The effect of lower average market interest rates during the reported periods on the average yield on average interest-earning assets was partly limited by the aforementioned interest rate swaps on variable-rate loans.

Taxable-equivalent net interest income for the first quarter of 2012 decreased $633 thousand, or 0.4%, from the fourth quarter of 2011. Taxable-equivalent net interest income for the first quarter of 2012 was impacted by a decrease in the number of days compared to the fourth quarter of 2011. Taxable-equivalent net interest income for the fourth quarter of 2011 included 92 days compared to 91 days for the first quarter of 2012. The additional day added approximately $1.8 million to taxable-equivalent net interest income during the fourth quarter of 2011. Excluding the impact of the additional day during the fourth quarter of 2011 results in an effective increase in taxable-equivalent net interest income of approximately $1.2 million during the first quarter of 2012. This effective increase was primarily related to an increase in the average volume of interest-earning assets combined with a shift in the relative mix of average interest-earning assets as lower-yielding interest bearing deposits were reinvested into higher-yielding taxable securities partly offset by a decrease in the net interest margin. The average volume of funds invested in interest-bearing deposits decreased $1.4 billion from $2.5 billion during the fourth quarter of 2011 to $1.1 billion during first quarter of 2012. The average volume of funds invested in taxable securities increased $1.6 billion from $5.1 billion during the fourth quarter of 2011 to $6.7 billion during first quarter of 2012. The net interest margin decreased 3 basis points from 3.76% in the fourth quarter of 2011 to 3.73% in the first quarter of 2012. The average yield on interest-earning assets decreased 6 basis points from 3.95% in the fourth quarter of 2011 to 3.89% in the first quarter of 2012 primarily due to decreases in the average yields on taxable securities (down 55 basis points) and loans (down 10 basis points). The majority of the growth in taxable securities was in lower-yielding U.S. Treasury securities, which had a dampening effect on the overall yield on taxable securities. Taxable-equivalent net interest income for the first quarter of 2012 was favorably impacted by a 5 basis point decrease in the average cost of funds from 0.31% in the fourth quarter of 2011 to 0.26% in the first quarter of 2012.

The average volume of loans during the first quarter of 2012 decreased $31.4 million compared to the first quarter of 2011 and increased $74.8 million compared to the fourth quarter of 2011. Loans made up approximately 44.5% of average interest-earning assets during the first quarter of 2012 compared to 51.1% during the first quarter of 2011 and 44.8% during the fourth quarter of 2011. The average yield on loans was 4.94% during the first quarter of 2012 compared to 5.01% during the first quarter of 2011 and 5.04% during the fourth quarter of 2011. Loans generally have significantly higher yields compared to securities, interest-bearing deposits and federal funds sold and resell agreements and, as such, have a more positive effect on the net interest margin.

The average volume of securities increased $3.1 billion and $1.6 billion during the first quarter of 2012 compared to the first and fourth quarters of 2011, respectively. Securities made up approximately 49.3% of average interest-earning assets during the first quarter of 2012 compared to 37.0% during the first quarter of 2011 and 41.0% during the fourth quarter of 2011. The average yield on securities was 3.37% in the first quarter of 2012 compared to 4.73% in the first quarter of 2011 and 4.02% in the fourth quarter of 2011. The decrease in the average yield on securities was partly due to a decrease in the yield on taxable securities as proceeds from principal repayments were reinvested at lower market rates. Furthermore, a large portion of the growth in taxable securities was in lower-yielding U.S. Treasury securities. The decrease in the average yield on securities was also partly related to a decrease in the relative proportion of higher-yielding, tax-exempt municipal securities in the first quarter of 2012 compared to the prior periods. The relative proportion of higher-yielding, tax-exempt municipal securities totaled 25.3% of average securities during the first quarter of 2012 compared to 35.3% during in the first quarter of 2011 and 30.4% during the fourth quarter of 2011. The average yield on taxable securities was 2.23% in the first quarter of 2012 compared to 3.39% in first quarter of 2011 and 2.78% in the fourth quarter of 2011, while the average taxable-equivalent yield on tax-exempt securities was 6.94% in the first quarter of 2012 compared to 7.15% in first quarter of 2011 and 6.94% in the fourth quarter of 2011.

Average federal funds sold, resell agreements and interest-bearing deposits during the first quarter of 2012 decreased $769.5 million compared to the first quarter of 2011 and decreased $1.4 billion compared to the fourth quarter of 2011. Federal funds sold, resell agreements and interest-bearing deposits made up approximately 6.2% of average interest-earning assets during the first quarter of 2012 compared to 11.9% during the first quarter of 2011 and 14.2% during the fourth quarter of 2011. The combined average yield on federal funds sold, resell agreements and interest-bearing deposits was 0.34% during the first quarter of 2012 compared to 0.26% during the first quarter of 2011 and 0.30% during the fourth quarter of 2011. The decrease in average federal funds sold, resell agreements and interest-bearing deposits compared to the first and fourth quarters of 2011 was due to the reinvestment of funds into higher-yielding securities.

Average deposits increased $1.9 billion during the first quarter of 2012 compared to the first quarter of 2011 and increased $268.0 million compared to the fourth quarter of 2011. Average interest-bearing deposits for the first quarter of 2012 increased $777.1 million and $194.4 million compared to the first and fourth quarters of 2011, respectively, while average non-interest-bearing deposits increased $1.2 billion and $73.6 million compared to the first and fourth quarters of 2011, respectively. The ratio of average interest-bearing deposits to total average deposits was 61.0% during the first quarter of

2012 compared to 63.7% during the first quarter of 2011 and 60.8% during the fourth quarter of 2011. The average cost of deposits is primarily impacted by changes in market interest rates as well as changes in the volume and relative mix of interest-bearing deposits. The average cost of interest-bearing deposits and total deposits was 0.18% and 0.11% during the first quarter of 2012 compared to 0.26% and 0.17% during the first quarter of 2011 and 0.20% and 0.12% during the fourth quarter of 2011. The decrease in the average cost of interest-bearing deposits during the comparable periods was primarily the result of decreases in interest rates offered on certain deposit products due to decreases in average market interest rates and decreases in renewal interest rates on maturing certificates of deposit given the current low interest rate environment. Additionally, the relative proportion of higher-cost certificates of deposit to total average interest-bearing deposits decreased from 12.6% and 11.1% during the first and fourth quarters of 2011, respectively, to 10.5% during the first quarter of 2012.

The Corporation’s net interest spread, which represents the difference between the average rate earned on earning assets and the average rate paid on interest-bearing liabilities, was 3.63% during the first quarter of 2012 compared to 3.87% and 3.64% during the first and fourth quarters of 2011, respectively. The net interest spread, as well as the net interest margin, will be impacted by future changes in short-term and long-term interest rate levels, as well as the impact from the competitive environment. A discussion of the effects of changing interest rates on net interest income is set forth in Item 3. Quantitative and Qualitative Disclosures About Market Risk included elsewhere in this report.

The Corporation’s hedging policies permit the use of various derivative financial instruments, including interest rate swaps, swaptions, caps and floors, to manage exposure to changes in interest rates. Details of the Corporation’s derivatives and hedging activities are set forth in Note 8 - Derivative Financial Instruments in the accompanying notes to consolidated financial statements included elsewhere in this report. Information regarding the impact of fluctuations in interest rates on the Corporation’s derivative financial instruments is set forth in Item 3. Quantitative and Qualitative Disclosures About Market Risk included elsewhere in this report.

Provision for Loan Losses

The provision for loan losses is determined by management as the amount to be added to the allowance for loan losses after net charge-offs have been deducted to bring the allowance to a level which, in management’s best estimate, is necessary to absorb probable losses within the existing loan portfolio. The provision for loan losses totaled $1.1 million for the first quarter of 2012 compared $9.5 million for the first quarter of 2011. No provision for loan losses was recognized during the fourth quarter of 2011. See the section captioned “Allowance for Loan Losses” elsewhere in this discussion for further analysis of the provision for loan losses.

Non-Interest Income

The components of non-interest income were as follows:


	Three Months Ended
	March 31,			December 31,		March 31,
	2012			2011		2011
Trust and investment management fees	$	20,652		$	18,861	$	19,471
Service charges on deposit accounts		20,794			21,475		21,250
Insurance commissions and fees		12,377			7,450		10,494
Interchange and debit card transaction fees		4,117			4,166		8,045
Other charges, commissions and fees		7,350			7,125		7,228
Net gain (loss) on securities transactions		(491	)		—		5
Other		7,180			8,583		5,840

Total	$	71,979		$	67,660	$	72,333

Total non-interest income for the three months ended March 31, 2012 decreased $354 thousand, or 0.5%, compared to the same period in 2011 and increased $4.3 million, or 6.4%, compared to the fourth quarter of 2011. Changes in the components of non-interest income are discussed below.

Trust and Investment Management Fees. Trust and investment management fees for the three months ended March 31, 2012 increased $1.2 million, or 6.1%, compared to the same period in 2011. Trust investment fees are the most significant component of trust and investment management fees, making up approximately 67% of total trust and investment management fees for the first three months of 2012. Investment and other custodial account fees are generally based on the market value of assets within a trust account. Volatility in the equity and bond markets impacts the market value of trust assets and the related trust investment fees.

The $1.2 million increase in trust and investment management fee income during the three months ended March 31, 2012 compared to the same period in 2011 was primarily the result of an increase in estate fees (up $422 thousand), trust investment fees (up $404 thousand), mutual fund management fees (up $180 thousand) and oil and gas trust management fees (up $147 thousand). Trust and investment management fee income for the first quarter of 2012 increased $1.8 million, or 9.5%, from the fourth quarter of 2011. The increase was primarily due to increases in estate fees (up $773 thousand), trust investment fees (up $550 thousand), custody fees (up $193 thousand) and mutual fund management fees (up $179 thousand). Estate fees are transactional in nature and can vary from quarter to quarter. The increase in trust investment fees was partly due to improvements in equity valuations during the first quarter of 2012

At March 31, 2012, trust assets, including both managed assets and custody assets, were primarily composed of equity securities (43.2% of trust assets), fixed income securities (41.0% of trust assets) and cash equivalents (10.2% of trust assets). The estimated fair value of trust assets was $26.3 billion (including managed assets of $10.8 billion and custody assets of $15.5 billion) at March 31, 2012, compared to $25.2 billion (including managed assets of $10.3 billion and custody assets of $14.9 billion) at December 31, 2011 and $25.5 billion (including managed assets of $10.1 billion and custody assets of $15.4 billion) at March 31, 2011.

Service Charges on Deposit Accounts. Service charges on deposit accounts for the three months ended March 31, 2012 decreased $456 thousand, or 2.1%, compared to the same period in 2011. The decrease was primarily due to decreases in overdraft/insufficient funds charges on both consumer and commercial accounts (down $400 thousand on a combined basis). Overdraft/insufficient funds charges totaled $8.2 million ($6.5 million consumer and $1.7 million commercial) during the first quarter of 2012 compared to $8.6 million ($6.6 million consumer and $2.0 million commercial) during the first quarter of 2011.

Service charges on deposit accounts for the first quarter of 2012 decreased $681 thousand, or 3.2%, compared to the fourth quarter of 2011. The decrease was primarily due to decreases in overdraft/insufficient funds charges on both consumer and commercial accounts, down $711 thousand on a combined basis, from $8.9 million ($7.1 million consumer and $1.8 million commercial) during the fourth quarter of 2011. Overdraft/insufficient funds charges are generally seasonally higher in the fourth quarter.

Insurance Commissions and Fees. Insurance commissions and fees for the three months ended March 31, 2012 increased $1.9 million, or 17.9%, compared to the same period in 2011. The increase is related to an increase in commission income (up $2.1 million). The increase in commission income was primarily related to an increase in employee benefit commissions and fees, which was partly related to the acquisitions of Clark Benefits Group during the second quarter of 2011 and Stone Partners, Inc. during the first quarter of 2012. The increase in commission income was also partly related to an increase in property and casualty commissions resulting from normal variation in the market demand for insurance products.

Insurance commissions and fees include contingent commissions totaling $2.3 million during the three months ended March 31, 2012 and $2.6 million during the three months ended March 31, 2011. Contingent commissions primarily consist of amounts received from various property and casualty insurance carriers related to the loss performance of insurance policies previously placed. Such commissions are seasonal in nature and are generally received during the first quarter of each year. These commissions totaled $1.9 million and $2.2 million during the three months ended March 31, 2012 and 2011. Contingent commissions also include amounts received from various benefit plan insurance companies related to the volume of business generated and/or the subsequent retention of such business. These commissions totaled $385 thousand and $387 thousand during the three months ended March 31, 2012 and 2011.

Insurance commissions and fees for the first quarter of 2012 increased $4.9 million, or 66.1%, compared to the fourth quarter of 2011. Commission income for the first quarter of 2012 increased $2.9 million compared to the fourth quarter of 2011 partly due to an increase in benefit plan commissions and fees, which was related to the normal variation in the timing of renewals as well as the additional revenues related to the acquisition of Stone Partners, Inc. during the first quarter of 2012. The increase in insurance commissions and fees was also partly due to the seasonal increase in contingent commissions (up $2.0 million) received from various insurance carriers related to the performance of insurance policies previously placed.

Interchange and Debit Card Transaction Fees. Interchange and debit card transaction fees consist of income from Visa check card usage, point of sale income from PIN-based debit card transactions and ATM service fees. Interchange and debit card transaction fees for the three months ended March 31, 2012 decreased $3.9 million, or 48.8%, compared to the same period in 2011. Income from Visa check card usage decreased $3.3 million, or 60.6% from $5.5 million during the first quarter of 2011 to $2.2 million during the first quarter of 2012, while point of sale income from PIN-based debit card transactions decreased $536 thousand, or 30.8%, from $1.7 million during the first quarter of 2011 to $1.2 million during the first quarter of 2012. These decreases were primarily related to new rules that significantly impacted the level of interchange fees that may be charged, as further discussed below. Interchange and debit card transaction fees for the first quarter of 2012 did not significantly fluctuate compared to the fourth quarter of 2011.

As discussed in the section captioned “Supervision and Regulation” included in Item 1. Business, of the 2011 Form 10-K, the Dodd-Frank Act amended the Electronic Fund Transfer Act (“EFTA”) which, among other things, gave the Federal Reserve the authority to establish rules regarding interchange fees charged for electronic debit transactions by payment card issuers, such as Frost Bank. In June 2011, the Federal Reserve issued a final rule that, among other things, established standards for determining whether an interchange fee received or charged by an issuer with respect to an electronic debit transaction is reasonable and proportional to the cost incurred by the issuer with respect to the transaction. These new standards took effect on October 1, 2011 and apply to issuers, such as the Corporation, that, together with their affiliates, have assets of $10 billion or more. Under the rule, the maximum permissible interchange fee for an electronic debit transaction will be the sum of 21 cents per transaction and 5 basis points multiplied by the value of the transaction. The Federal Reserve also issued an interim final rule that allows for an upward adjustment of no more than 1 cent to an issuer’s debit card interchange fee if the issuer develops and implements policies and procedures reasonably designed to achieve the fraud-prevention standards set out in the interim final rule. The fraud-prevention adjustment was effective on October 1, 2011, concurrent with the debit card interchange fee limits.

Other Charges, Commissions and Fees. Other charges, commissions and fees for the three months ended March 31, 2012 increased $122 thousand, or 1.7%, compared to the same period in 2011. The increase in other charges, commissions and fees included increases in early termination fees on lines of credit held by Frost Capital, (up $476 thousand); consulting revenues, primarily related the acquisition of Stone Partners, Inc., (up $385 thousand); an increase in unused balance fees on loan commitments (up $187 thousand) and an increase in service charges on funds transfers (up $139 thousand), among other things. These increases were partly offset by decreases in investment banking fees related to corporate advisory services (down $614 thousand), income related to sale of annuities (down $282 thousand) and receivables factoring income (down $233 thousand). Investment banking fees related to corporate advisory services are transaction based and can vary significantly from quarter to quarter.

Other charges, commissions and fees for the first quarter of 2012 increased $225 thousand, or 3.2%, compared to the fourth quarter of 2011. The increase was primarily due to an increase in consulting revenues, primarily related the acquisition of Stone Partners, Inc., (up $385 thousand); other service charges (up $372 thousand) and income from the sale of mutual funds (up $218 thousand), among other things. These increases were partly offset by decreases in investment banking fees related to corporate advisory services (down $729 thousand) and loan processing fees (down $188 thousand).

Net Gain/Loss on Securities Transactions. During the first quarter of 2012, the Corporation realized a net loss of $491 thousand on the sale of available-for-sale securities. During January 2012, the Corporation purchased $996.4 million of U.S. Treasury securities utilizing excess liquidity as a defensive strategy to lock in the yield on those funds in case the Federal Reserve lowered the rate paid on funds deposited in the Federal Reserve account. Shortly thereafter, U.S. Treasury prices rallied and the Corporation sold the securities, realizing a $2.1 million gain, and concurrently purchased $998.4 million of U.S. Treasury securities having a shorter term to maturity. In March 2012, U.S. Treasury yields increased and the Corporation sold the aforementioned position in U.S. Treasury securities and recognized a $2.6 million loss The proceeds were concurrently reinvested in U.S. Treasury securities that had a similar yield to the original, longer-term position purchased in January 2012, but with a shorter term to maturity. During the first quarter of 2012, the Corporation also sold available-for-sale securities with an amortized cost totaling $8.0 billion and realized a net loss of $2 thousand on those sales. These securities were primarily purchased during 2012 and subsequently sold in connection with the Corporation’s tax planning strategies related to the Texas franchise tax. The gross proceeds from the sales of these securities outside of Texas are included in total revenues/receipts from all sources reported for Texas franchise tax purposes, which results in a reduction in the overall percentage of revenues/receipts apportioned to Texas and subjected to taxation under the Texas franchise tax. During the first quarter of 2011, the Corporation sold available-for-sale securities with an amortized cost totaling $5.5 billion and realized a net gain of $5 thousand on those sales. These securities were purchased and subsequently sold during the first quarter of 2011 in connection with the aforementioned tax planning strategies related to the Texas franchise tax.

Other Non-Interest Income. Other non-interest income increased $1.3 million, or 22.9%, for the three months ended March 31, 2012 compared to the same period in 2011. The increase was primarily related to an increase in mineral interest income related to bonus, rental and shut-in payments and oil and gas royalties received from severed mineral interests on property owned by Main Plaza Corporation, a wholly owned non-banking subsidiary of the Corporation (up $1.5 million). This increase was partly offset by decreases in sundry income from various miscellaneous items (down $275 thousand) and gains on the sale of assets/foreclosed assets (down $168 thousand).

Other non-interest income for the first quarter of 2012 decreased $1.4 million, or 16.3%, compared to the fourth quarter of 2011. The decrease was primarily related to decreases in income from securities trading and customer derivative activities (down $1.3 million), sundry income from various miscellaneous items (down $938 thousand) and gains on the sale of assets/foreclosed assets (down $701 thousand). These decreases were partly offset by an increase mineral interest income (up $1.6 million).

Non-Interest Expense

The components of non-interest expense were as follows:


	Three Months Ended
	March 31,		December 31,		March 31,
	2012		2011		2011
Salaries and wages	$	63,702	$	66,126	$	62,430
Employee benefits		16,701		12,574		15,311
Net occupancy		11,797		11,413		11,652
Furniture and equipment		13,420		13,454		12,281
Deposit insurance		2,497		2,773		4,760
Intangible amortization		1,011		1,052		1,120
Other		32,912		36,441		32,507

Total	$	142,040	$	143,833	$	140,061

Total non-interest expense for the three months ended March 31, 2012 increased $2.0 million, or 1.4%, and decreased $1.8 million, or 1.3%, compared to the first and fourth quarters of 2011, respectively. Changes in the components of non-interest expense are discussed below.

Salaries and Wages. Salaries and wages for the three months ended March 31, 2012 increased $1.3 million, or 2.0%, compared to the same period in 2011 and decreased $2.4 million, or 3.7%, compared to the fourth quarter of 2011. The increase from the first quarter of 2011 was primarily related to normal annual merit and market increases and increased commissions related to higher insurance revenues partly offset by a decrease in stock-based compensation expense, a decrease in incentive compensation and an increase in cost deferrals related to lending activity. The decrease from the fourth quarter of 2011 was primarily related a decrease in stock-based compensation expense partly offset by normal annual merit and market increases and an increase in cost deferrals related to lending activity. Stock-based compensation expense was higher in the fourth quarter of 2011 as the total expense related to certain option and restricted stock unit awards was recognized as of the grant date in October 2011.

Employee Benefits. Employee benefits for the three months ended March 31, 2012 increased $1.4 million, or 9.1%, compared to the same period in 2011. The increase was primarily related to increases in expenses related to the Corporation’s defined benefit retirement plans (up $877 thousand) and medical insurance expense (up $685 thousand) partly offset by a decrease in expense related to the Corporation’s 401(k) and profit sharing plans (down $508 thousand).

Employee benefits for the first quarter of 2012 increased $4.1 million, or 32.8%, compared to the fourth quarter of 2011 primarily due to increases in payroll taxes (up $2.5 million), expenses related to the Corporation’s defined benefit retirement plans (up $877 thousand) and medical insurance expense (up $524 thousand). The Corporation generally experiences a decline in payroll taxes during the fourth quarter of each year as certain employees reach maximum taxable salary levels earlier in the year and higher levels of payroll taxes and 401(k) plan matching contributions during the first quarter each year due to annual incentive compensation payments.

The Corporation’s defined benefit retirement and restoration plans were frozen effective as of December 31, 2001 and were replaced by a profit sharing plan. Management believes these actions helped to reduce the volatility in retirement plan expense. However, the Corporation still has funding obligations related to the defined benefit and restoration plans and could recognize retirement expense related to these plans in future years, which would be dependent on the return earned on plan assets, the level of interest rates and employee turnover.

Net Occupancy. Net occupancy expense for the three months ended March 31, 2012 increased $145 thousand, or 1.2%, compared to the same period in 2011. The increase was primarily related to an increase in repairs expense (up $111 thousand) as well as increases in depreciation on leasehold improvements, property taxes and building maintenance expense, among other things. These increases were partly offset by decreases in lease expense and utilities expense, among other things. Net occupancy expense for the first quarter of 2012 increased $384 thousand, or 3.4%, compared to the fourth quarter of 2011. The increase was primarily related to an increase in property taxes (up $666 thousand) partly offset by a decrease in service contracts expense (down $144 thousand).

Furniture and Equipment. Furniture and equipment expense for the three months ended March 31, 2012 increased $1.1 million, or 9.3%, compared to the same period in 2011. The increase was primarily related to increases in software maintenance (up $475 thousand), software amortization (up $371 thousand) and service contract expenses (up $314 thousand). Furniture and equipment expense for the first quarter of 2012 did not significantly fluctuate compared to the fourth quarter of 2011 as a decrease in software maintenance expense (down $232 thousand) was offset by an increase service contract expenses (up $223 thousand).

Deposit Insurance. Deposit insurance expense totaled $2.5 million for the three months ended March 31, 2012, compared to $4.8 million for the three months ended March 31, 2011 and $2.8 million for the three months ended December 31, 2011. The decrease in deposit insurance expense during the first quarter of 2012 compared to the same period in 2011 was primarily related to a change in the deposit insurance assessment base and a change in the method by which the assessment rate is determined for large financial institutions, as more fully discussed in the 2011 Form 10-K. The decrease in deposit insurance expense during the first quarter of 2012 compared to the fourth quarter of 2011 was primarily related to a decrease in the assessment rate.

Intangible Amortization. Intangible amortization is primarily related to core deposit intangibles and, to a lesser extent, intangibles related to customer relationships and non-compete agreements. Intangible amortization for the three months ended March 31, 2012 decreased $109 thousand, or 9.7%, compared to the same period in 2011 and $41 thousand, or 3.9%, compared to the fourth quarter of 2011. The decreases in amortization expense are primarily the result of the completion of amortization of certain intangible assets and a reduction in the annual amortization rate of certain intangible assets as the Corporation uses an accelerated amortization approach which results in higher amortization rates during the earlier years of the useful lives of intangible assets. The decreases in amortization were partly offset by the additional amortization related to intangible assets recorded in connection with an acquisition in 2011 and the acquisition of Stone Partners Inc. on January 1, 2012.

Other Non-Interest Expense. Other non-interest expense for the three months ended March 31, 2012 increased $405 thousand, or 1.2%, compared to the same period in 2011. Components of other non-interest expense with significant increases included advertising/promotions expense (up $1.0 million), professional services expense (up $462 thousand), travel expense (up $368 thousand) and web-site maintenance expense (up $337 thousand). The increase in advertising/promotions expense is primarily related to the continuation of the marketing campaign that began during the first quarter of 2011. The Corporation expects advertising/promotions expense for the remainder of 2012 to be at levels comparable to 2011. The increases in the aforementioned items were partly offset by decreases in losses on the sale/write-down of assets/foreclosed assets (down $1.3 million) and sundry losses from various miscellaneous items (down $573 thousand). The decrease in losses on the sale/write-down of assets/foreclosed assets was primarily related to a $900 thousand write-down of a branch facility that was in the process of being sold in 2011.

Other non-interest expense for the first quarter of 2012 decreased $3.5 million, or 9.7%, compared to the fourth quarter of 2011. Components of other non-interest expense with significant decreases included donation expense, due to a $2 million donation to the Frost Charitable Foundation in the fourth quarter of 2011, (down $2.2 million), advertising/promotions expense (down $1.1 million) and losses on the sale/write-down of assets/foreclosed assets (down $657 thousand), among other things. These decreases were partly offset by increases in dues and membership fees expense (up $348 thousand), director fees expense (up $149 thousand) and Visa check card expense (up $145 thousand), among other things.

Results of Segment Operations

The Corporation’s operations are managed along two operating segments: Banking and Frost Wealth Advisors. A description of each business and the methodologies used to measure financial performance is described in Note 14 - Operating Segments in the accompanying notes to consolidated financial statements included elsewhere in this report. Net income (loss) by operating segment is presented below:


	Three Months Ended
	March 31, 2012			December 31, 2011			March 31, 2011
Banking	$	58,290		$	55,631		$	51,853
Frost Wealth Advisors		3,391			1,751			1,670
Non-Banks		(648	)		(1,968	)		(1,595	)

Consolidated net income	$	61,033		$	55,414		$	51,928

Banking

Net income for the three months ended March 31, 2012 increased $6.4 million, or 12.4%, compared to the same period in 2011. The increase was primarily the result of a $6.7 million increase in net interest income and an $8.4 million decrease in the provision for loan losses partly offset by a $3.4 million increase in income tax expense, a $2.7 million decrease in non-interest income and a $2.6 million increase in non-interest expense.

Net interest income for the three months ended March 31, 2012 increased $6.7 million, or 4.7%, compared to the same period in 2011. The increase primarily resulted from an increase in the average volume of interest-earning assets combined with the effect of an additional day in the first quarter of 2012 due to leap year partly offset by a decrease in the net interest margin. See the analysis of net interest income included in the section captioned “Net Interest Income” included elsewhere in this discussion.

The provision for loan losses for the three months ended March 31, 2012 totaled $1.1 million compared to $9.5 million for the same period in 2011. See the analysis of the provision for loan losses included in the section captioned “Allowance for Loan Losses” included elsewhere in this discussion.

Non-interest income for the three months ended March 31, 2012 decreased $2.7 million, or 5.5%, compared to the same period in 2011. The decrease was primarily due to decreases in interchange and debit card transaction fees, an increase in net loss on securities transactions and a decrease in service charges on deposit accounts partly offset by increases in insurance commissions and fees and other charges, commissions and fees. See the analysis of these categories of non-interest income included in the section captioned “Non-Interest Income” included elsewhere in this discussion.

Non-interest expense for the three months ended March 31, 2012 increased $2.6 million, or 2.2%, compared to the same period in 2011. The increase was primarily related to increases in employee benefits, salaries and wages, other non-interest expense and furniture and equipment expense partly offset by a decrease in deposit insurance expense. The increase in employee benefits expense was primarily related to increases in expenses related to the Corporation’s defined benefit retirement plans and medical insurance expense partly offset by a decrease in expense related to the Corporation’s 401(k) and profit sharing plans. The increase in salaries and wages was primarily related to normal annual merit and market increases and increased commissions related to higher insurance revenues partly offset by a decrease in stock-based compensation expense, a decrease in incentive compensation and an increase in cost deferrals related to lending activity. The increase in other non-interest expense was partly related to increases in overhead cost allocations. The increase in furniture and equipment expense was due to increases in software maintenance, software amortization and service contract expenses. See the analysis of these items included in the section captioned “Non-Interest Expense” included elsewhere in this discussion.

Frost Insurance Agency, which is included in the Banking operating segment, had gross commission revenues of $12.5 million during the three months ended March 31, 2012 and $10.6 million during the three months ended March 31, 2011. The increase during the three months ended March 31, 2012 is primarily related to an increase in employee benefit commissions and fees, which was partly related to the acquisitions of Clark Benefits Group during the second quarter of 2011 and Stone Partners, Inc. during the first quarter of 2012. See the analysis of insurance commissions and fees included in the section captioned “Non-Interest Income” included elsewhere in this discussion.

Frost Wealth Advisors

Net income for the three months ended March 31, 2012 increased $1.7 million, or 103.1%, compared to the same period in 2011. The increase was primarily due to a $1.1 million decrease in non-interest expense, a $904 thousand increase in non-interest income and a $659 thousand increase in net interest income partly offset by a $927 thousand increase in income tax expense.

Non-interest income for the three months ended March 31, 2012 increased $904 thousand, or 3.9%, compared to the same period in 2011. The increase was primarily due to an increase in trust and investment management fees (up $1.3 million) partly offset by a decrease in other charges, commissions and fees (down $293 thousand).

Trust and investment management fee income is the most significant income component for Frost Wealth Advisors. Investment fees are the most significant component of trust and investment management fees, making up approximately 67% of total trust and investment management fees for the first three months of 2012. Investment and other custodial account fees are generally based on the market value of assets within a trust account. Volatility in the equity and bond markets impacts the market value of trust assets and the related investment fees. The increase in trust and investment management fee income during the three months ended March 31, 2012 compared to the same period in 2011 was primarily the result of an increase in estate fees, trust investment fees, mutual fund management fees and oil and gas trust management fees. See the analysis of trust and investment management fees included in the section captioned “Non-Interest Income” included elsewhere in this discussion.

The decrease in other charges, commissions and fees during the three months ended March 31, 2012 compared to the same period in 2011 was primarily due to a decrease in income related to sale of annuities.

Non-interest expense for the three months ended March 31, 2012 decreased $1.1 million, or 5.0%, compared to the same period in 2011 primarily due to a decrease in other non-interest expense (down $1.3 million). The decrease in other non-interest expense was related to decreases in various overhead cost allocations as well as decreases in sundry losses from various miscellaneous items, professional services expense and sub-advisor investment management fees related to Frost Investment Advisors, LLC,, among other things.

Non-Banks

The net loss for the Non-Banks operating segment for the three months ended March 31, 2012 decreased $947 thousand, or 59.4%, compared to the same period in 2011. The decrease was primarily due to a $1.4 million increase in non-interest income, which was primarily related to increased mineral interest income related to bonus, rental and shut-in payments and oil and gas royalties received from severed mineral interests on property owned by Main Plaza Corporation, a wholly-owned non-banking subsidiary of the Corporation. The decrease in the net loss for the Non-Banks segment was also due to a $606 thousand decrease in net interest expense partly offset by a $559 thousand decrease in income tax benefits and a $517 thousand increase in non-interest expense.

Income Taxes

The Corporation recognized income tax expense of $17.5 million, for an effective rate of 22.3%, for the three months ended March 31, 2012 compared to $12.7 million, for an effective rate of 19.6%, for the three months ended March 31, 2011. The effective income tax rates differed from the U.S. statutory rate of 35% during the comparable periods primarily due to the effect of tax-exempt income from loans, securities and life insurance policies.

Average Balance Sheet

Average assets totaled $19.9 billion for the three months ended March 31, 2012 representing an increase of $2.2 billion, or 12.7%, compared to average assets for the same period in 2011. The increase was primarily reflected in earning assets, which increased $2.3 billion, or 14.3%, during the first quarter of 2012 compared to the first quarter of 2011. The increase in earning assets was primarily due to a $3.1 billion increase in average securities partly offset by a $767.0 million decrease in average interest-bearing deposits and federal funds sold and resale agreements. The growth in average interest-earning assets was primarily funded by an increase in deposits. Total deposits averaged $16.4 billion for the first three months of 2012, increasing $1.9 billion, or 13.3%, compared to the same period in 2011. Average interest-bearing accounts totaled 61.0% and 63.7% of average total deposits during the first three months of 2012 and 2011, respectively.

Loans

Loans were as follows as of the dates indicated:


	March 31, 2012			Percentage of Total			December 31, 2011			March 31, 2011
Commercial and industrial:
Commercial	$	3,709,450			45.7	%	$	3,553,989		$	3,393,769
Leases		193,162			2.4			193,412			194,692
Asset-based		140,240			1.7			169,466			134,783

Total commercial and industrial		4,042,852			49.8			3,916,867			3,723,244

Commercial real estate:
Commercial mortgages		2,357,206			29.0			2,383,479			2,410,760
Construction		493,600			6.1			434,870			574,637
Land:		184,078			2.2			202,478			227,297

Total commercial real estate		3,034,884			37.3			3,020,827			3,212,694

Consumer real estate:
Home equity loans		288,961			3.6			282,244			274,952
Home equity lines of credit		190,371			2.4			191,960			187,573
1-4 family residential mortgages		43,284			0.5			45,943			53,587
Construction		18,910			0.2			17,544			23,504
Other		219,760			2.7			225,118			244,752

Total consumer real estate		761,286			9.4			762,809			784,368
Total real estate		3,796,170			46.7			3,783,636			3,997,062

Consumer and other:
Consumer installment		296,057			3.6			301,518			307,812
Other		8,415			0.1			11,018			17,310

Total consumer real estate		304,472			3.7			312,536			325,122

Unearned discounts		(16,781	)		(0.2	)		(17,910	)		(20,348	)

Total loans	$	8,126,713			100.0	%	$	7,995,129		$	8,025,080

Loans increased $131.6 million, or 1.6%, compared to December 31, 2011. The majority of the Corporation’s loan portfolio is comprised of commercial and industrial loans and real estate loans. Commercial and industrial loans made up 49.8% and 49.0% of total loans at March 31, 2012 and December 31, 2011, respectively while real estate loans made up 46.7% and 47.3% of total loans, respectively, at those dates. Real estate loans include both commercial and consumer balances.

Commercial and industrial loans increased $126.0 million, or 3.2%, during the first quarter of 2012. The Corporation’s commercial and industrial loans are a diverse group of loans to small, medium and large businesses. The purpose of these loans varies from supporting seasonal working capital needs to term financing of equipment. While some short-term loans may be made on an unsecured basis, most are secured by the assets being financed with collateral margins that are consistent with the Corporation’s loan policy guidelines. The commercial and industrial loan portfolio also includes the commercial lease and asset-based lending portfolios as well as purchased shared national credits (“SNC”s) which are discussed in more detail below.

Purchased shared national credits are participations purchased from upstream financial organizations and tend to be larger in size than the Corporation’s originated portfolio. The Corporation’s purchased SNC portfolio totaled $599.5 million at March 31, 2012, increasing $62.1 million, or 11.5%, from $537.4 million at December 31, 2011. At March 31, 2012, 64.1% of outstanding purchased SNCs was related to the energy industry. The remaining purchased SNCs were diversified throughout various other industries, with no other single industry exceeding 10% of the total purchased SNC portfolio. Additionally, almost all of the outstanding balance of purchased SNCs was included in the commercial and industrial portfolio, with the remainder included in the real estate categories. SNC participations are originated in the normal course of business to meet the needs of the Corporation’s customers. As a matter of policy, the Corporation generally only participates in SNCs for companies headquartered in or which have significant operations within the Corporation’s market areas. In addition, the Corporation must have direct access to the company’s management, an existing banking relationship or the expectation of broadening the relationship with other banking products and services within the following 12 to 24 months. SNCs are reviewed at least quarterly for credit quality and business development successes.

Real estate loans increased $12.5 million, or 0.3%, during the first quarter of 2012. Real estate loans include both commercial and consumer balances. Commercial real estate loans totaled $3.0 billion at March 31, 2012 and represented 79.9% of total real estate loans. The majority of this portfolio consists of commercial real estate mortgages, which includes both permanent and intermediate term loans. The Corporation’s primary focus for its commercial real estate portfolio has been growth in loans secured by owner-occupied properties. These loans are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Consequently, these loans must undergo the analysis and underwriting process of a commercial and industrial loan, as well as that of a real estate loan.

The consumer loan portfolio, including all consumer real estate, decreased $7.0 million, or 0.7%, from December 31, 2011. As the following table illustrates, the consumer loan portfolio has three distinct segments, including consumer real estate (excluding 1-4 family residential mortgages), consumer installment and 1-4 family residential mortgages.


	March 31, 2012		December 31, 2011		March 31, 2011
Consumer real estate:
Home equity loans	$	288,961	$	282,244	$	274,952
Home equity lines of credit		190,371		191,960		187,573
Construction		18,910		17,544		23,504
Other		219,760		225,118		244,752

Total consumer real estate		718,002		716,866		730,781

Consumer installment		296,057		301,518		307,812
1-4 family residential mortgages		43,284		45,943		53,587

Total consumer loans	$	1,057,343	$	1,064,327	$	1,092,180

Consumer real estate loans, increased $1.1 million, or 0.2%, from December 31, 2011. Combined, home equity loans and lines of credit made up 66.8% and 66.1% of the consumer real estate loan total at March 31, 2012 and December 31, 2011, respectively. The Corporation offers home equity loans up to 80% of the estimated value of the personal residence of the borrower, less the value of existing mortgages and home improvement loans. In general, the Corporation no longer originates 1-4 family mortgage loans, however, from time to time, the Corporation may invest in such loans to meet the needs of its customers.

The consumer installment loan portfolio primarily consists of automobile loans, unsecured revolving credit products, personal loans secured by cash and cash equivalents, and other similar types of credit facilities.

Non-Performing Assets

Non-performing assets and accruing past due loans are presented in the table below. All troubled debt restructurings are reported as non-accrual loans.


	March 31, 2012			December 31, 2011			March 31, 2011
Non-accrual loans:
Commercial and industrial	$	49,588		$	43,874		$	58,681
Commercial real estate		43,177			45,149			60,808
Consumer real estate		4,322			4,587			3,741
Consumer and other		783			728			581

Total non-accrual loans		97,870			94,338			123,811
Foreclosed assets:
Real estate		22,671			26,608			30,442
Other		5			—			450

Total foreclosed assets		22,676			26,608			30,892

Total non-performing assets	$	120,546		$	120,946		$	154,703

Ratio of non-performing assets to:
Total loans and foreclosed assets		1.48	%		1.51	%		1.92	%
Total assets		0.59			0.60			0.86
Accruing past due loans:
30 to 89 days past due	$	38,710		$	42,463		$	64,600
90 or more days past due		20,618			17,417			24,499

Total accruing loans past due	$	59,328		$	59,880		$	89,099

Ratio of accruing past due loans to total loans:
30 to 89 days past due		0.48	%		0.53	%		0.80	%
90 or more days past due		0.25			0.22			0.31

Total accruing loans past due		0.73	%		0.75	%		1.11	%

Non-performing assets include non-accrual loans and foreclosed assets. Non-performing assets at March 31, 2012 decreased $400 thousand from December 31, 2011 and $34.2 million from March 31, 2011. While down significantly from a year ago, in general, the level of non-performing assets during the comparable periods is reflective of weaker economic conditions which began in the latter part of 2008, although the Corporation has experienced decreases in the levels of classified assets in recent quarters. Non-accrual commercial loans included three credit relationships in excess of $5 million totaling $24.4 million at March 31, 2012 and two credit relationships in excess of $5 million totaling $17.3 million at December 31, 2011. Non-accrual real estate loans primarily consist of land development, 1-4 family residential construction credit relationships and loans secured by office buildings and religious facilities. Non-accrual commercial real estate loans included one credit relationship in excess of $5 million totaling $5.7 million at March 31, 2012 and one credit relationship in excess of $5 million totaling $5.8 million at December 31, 2011.

Generally, loans are placed on non-accrual status if principal or interest payments become 90 days past due and/or management deems the collectibility of the principal and/or interest to be in question, as well as when required by regulatory requirements. Once interest accruals are discontinued, accrued but uncollected interest is charged to current year operations. Subsequent receipts on non-accrual loans are recorded as a reduction of principal, and interest income is recorded only after principal recovery is reasonably assured. Classification of a loan as non-accrual does not preclude the ultimate collection of loan principal or interest.

Foreclosed assets represent property acquired as the result of borrower defaults on loans. Foreclosed assets are recorded at estimated fair value, less estimated selling costs, at the time of foreclosure. Write-downs occurring at foreclosure are charged against the allowance for loan losses. Subsequent to foreclosure, the fair value of property held is monitored/evaluated by a third-party service and reviewed with management on a quarterly basis. Write-downs are provided for subsequent declines in value and are included in other non-interest expense along with other expenses related to maintaining the properties. During 2011, foreclosed assets, particularly among certain classes of property (primarily land), experienced significant deterioration in fair values as a result of the prevailing weaker economic conditions. Write-downs of foreclosed assets totaled $75 thousand and $241 thousand, during the three months ended March 31, 2012 and 2011, respectively. There were no significant concentrations of any properties, to which the aforementioned write-downs relate, in any single geographic region.

Potential problem loans consist of loans that are performing in accordance with contractual terms but for which management has concerns about the ability of an obligor to continue to comply with repayment terms because of the obligor’s potential operating or financial difficulties. Management monitors these loans closely and reviews their performance on a regular basis. At March 31, 2012 and December 31, 2011, the Corporation had $41.0 million and $42.6 million in loans of this type which are not included in either of the non-accrual or 90 days past due loan categories. At March 31, 2012, potential problem loans consisted of seven credit relationships. Of the total outstanding balance at March 31, 2012, 70.3% related to a customer in the construction industry and 14.7% related to two customers in manufacturing. Weakness in these companies’ operating performance has caused the Corporation to heighten the attention given to these credits.

Allowance for Loan Losses

The allowance for loan losses is a reserve established through a provision for loan losses charged to expense, which represents management’s best estimate of probable losses that have been incurred within the existing portfolio of loans. The allowance, in the judgment of management, is necessary to reserve for estimated loan losses and risks inherent in the loan portfolio. The Corporation’s allowance for loan loss methodology includes allowance allocations calculated in accordance with ASC Topic 310, “Receivables” and allowance allocations calculated in accordance with ASC Topic 450, “Contingencies.” Accordingly, the methodology is based on historical loss experience by type of credit and internal risk grade, specific homogeneous risk pools and specific loss allocations, with adjustments for current events and conditions. The Corporation’s process for determining the appropriate level of the allowance for loan losses is designed to account for credit deterioration as it occurs. The provision for loan losses reflects loan quality trends, including the levels of and trends related to non-accrual loans, past due loans, potential problem loans, classified and criticized loans and net charge-offs or recoveries, among other factors. The provision for loan losses also reflects the totality of actions taken on all loans for a particular period. In other words, the amount of the provision reflects not only the necessary increases in the allowance for loan losses related to newly identified criticized loans, but it also reflects actions taken related to other loans including, among other things, any necessary increases or decreases in required allowances for specific loans or loan pools. See Note 3 - Loans in the accompanying notes to consolidated financial statements included elsewhere in this report for further details regarding the Corporation’s methodology for estimating the appropriate level of the allowance for loan losses.

The table below provides, as of the dates indicated, an allocation of the allowance for loan losses by loan type; however, allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories:


	March 31,		December 31,		March 31,
	2012		2011		2011
Commercial and industrial	$	45,869	$	42,774	$	52,800
Commercial real estate		20,003		20,912		24,551
Consumer real estate		3,699		3,540		3,485
Consumer and other		8,715		12,635		12,941
Unallocated		28,895		30,286		30,544

Total	$	107,181	$	110,147	$	124,321

As of March 31, 2012, the reserve allocated to commercial and industrial loans increased $3.1 million compared to December 31, 2011 and decreased $6.9 million compared to March 31, 2011. The increase from December 31, 2011 was primarily due to an increase in allocations for specific loans, an increase in the allocation for distressed industries, an increase in classified loans and the effect of an increase in the volume of commercial and industrial loans partly offset by a decrease in the environmental adjustment factor. The decrease from March 31, 2011 was primarily related to a decrease in the level of classified loans, a decrease in allocations for specific loans and a decrease in the environmental adjustment factor partly offset by the effect of an increase in the volume of commercial and industrial loans and an increase in the allocation for distressed industries. Classified commercial and industrial loans (loans having a risk grade of 11, 12 or 13) totaled $143.0 million at March 31, 2012 compared to $139.2 million at December 31, 2011 and $171.0 million at March 31, 2011. Specific allocations of the allowance for loan losses related to commercial and industrial loans totaled $5.4 million at March 31, 2012 compared to $2.7 million at December 31, 2011 and $13.1 million at March 31, 2011. The environmental adjustment factor resulted in additional general valuation allowances for commercial and industrial loans totaling $5.1 million at March 31, 2012, $5.6 million at December 31, 2011 and $5.7 million at March 31, 2011. As more fully discussed in Note 3 – Loans in the accompanying notes to consolidated financial statements, the distressed industries allocation was added to the Corporation’s methodology for the determination of reserves allocated to specific loan portfolio segments in the fourth quarter of 2011. The distressed industries allocation related to commercial and industrial loans totaled $4.7 million at March 31, 2012 and $4.1 million at December 31, 2011.

As of March 31, 2012, the reserve allocated to commercial real estate loans decreased $909 thousand compared to December 31, 2011 and $4.5 million compared to March 31, 2011. The decrease from December 31, 2011 was due to a decrease in the level of classified and other high risk grade non-classified loans, a decrease in the historical loss allocation factors applied to certain categories of non-classified and classified commercial real estate loans and a decrease in the environmental adjustment factor partly offset by the effect of an increase in the volume of commercial real estate loans. The decrease from March 31, 2011 was primarily related to a decrease in the level of classified and other high risk grade non-classified loans, a decrease in the historical loss allocation factors applied to certain categories of non-classified and classified commercial real estate loans, a decrease in allocations for specific loans and a decrease in the environmental adjustment factor combined with the effect of a decrease in the volume of commercial real estate loans. The decrease in the reserve allocated to commercial real estate loans as a result of the aforementioned items was partly offset by an increase in the allocation for distressed industries. Classified commercial real estate loans totaled $177.2 million at March 31, 2012 compared to $180.0 million at December 31, 2011 and $185.8 million at March 31, 2011. Specific allocations of the allowance for loan losses related to commercial real estate loans totaled $1.1 million at both March 31, 2012 and December 31, 2011 compared to $3.6 million at March 31, 2011. The environmental adjustment factor resulted in additional general valuation allowances for commercial real estate loans totaling $3.3 million at March 31, 2012 and $3.7 million at both December 31, 2011 and March 31, 2011. The distressed industries allocation related to commercial real estate loans totaled $972 thousand at March 31, 2012 and $922 thousand at December 31, 2011.

The reserve allocated to consumer real estate loans at March 31, 2012 increased $159 thousand compared to December 31, 2011 and $214 thousand compared to March 31, 2011. The increases in the reserve allocated to consumer real estate loans were primarily due to an increase in the historical loss allocation factor applied to consumer real estate loans partly offset by a decrease in the environmental adjustment factor and the effect of a decrease in the volume of consumer real estate loans. The reserve allocated to consumer and other loans at March 31, 2012 decreased $3.9 million compared to December 31, 2011 and decreased $4.2 million compared to March 31, 2011. The decreases were primarily related to a decrease in the historical loss allocation factor applied to consumer and other loans combined with a decrease in the environmental adjustment factor and the effect of a decrease in the volume of consumer and other loans.

The unallocated portion of the allowance for loan losses represents general valuation allowances that are not allocated to specific loan portfolio segments. See Note 3 – Loans in the accompanying notes to consolidated financial statements for information regarding the components of the unallocated portion of the allowance. The unallocated portion of the allowance for loan losses at March 31, 2012 decreased $1.4 million compared to December 31, 2011. This decrease was primarily due to a decrease in the allocation for general macroeconomic risk (down $1.2 million), a decrease in the allocation for loans that did not undergo a separate, independent concurrence review during the underwriting process (down $932 thousand) and an increase in the reduction adjustment for recoveries (up $911 thousand) partly offset by an increase in the allocation for excessive industry concentrations (up $825 thousand), an increase in the allocation for highly-leveraged credit relationships (up $603 thousand) and an increase in the allocation for credit and/or collateral exceptions that exceed specified risk grades (up $595 thousand). The unallocated portion of the allowance for loan losses at March 31, 2012 decreased $1.6 million compared to March 31, 2011. This decrease was primarily due to a decrease in the allocation for general macroeconomic risk (down $3.7 million), an increase in the reduction adjustment for recoveries (up $2.3 million) and a decrease in the allocation for loans that did not undergo a separate, independent concurrence review during the underwriting process (down $1.2 million) partly offset by an increase in the allocation for excessive industry concentrations (up $5.3 million). The increase in allocations related to excessive industry concentrations was primarily related to new industry concentrations that were not considered to be excessive during the first quarter of 2011.

Activity in the allowance for loan losses is presented in the following table.


	Three Months Ended
	March 31, 2012			December 31, 2011			March 31, 2011
Balance at beginning of period	$	110,147		$	115,433		$	126,316

Provision for loan losses		1,100			—			9,450

Charge-offs:
Commercial and industrial		(3,012	)		(5,421	)		(7,597	)
Commercial real estate		(2,842	)		(515	)		(3,877	)
Consumer real estate		(289	)		(677	)		(820	)
Consumer and other		(1,985	)		(2,383	)		(2,302	)

Total charge-offs		(8,128	)		(8,996	)		(14,596	)

Recoveries:
Commercial and industrial		1,341			1,404			767
Commercial real estate		492			243			556
Consumer real estate		523			25			290
Consumer and other		1,706			2,038			1,538

Total recoveries		4,062			3,710			3,151

Net charge-offs		(4,066	)		(5,286	)		(11,445	)

Balance at end of period	$	107,181		$	110,147		$	124,321


Ratio of allowance for loan losses to:
Total loans		1.32	%		1.38	%		1.55	%
Non-accrual loans		109.51			116.76			100.41

Ratio of annualized net charge-offs to average total loans		0.20			0.26			0.57

The provision for loan losses decreased by $8.4 million during the first quarter of 2012 compared to the first quarter of 2011. The decrease in the provision for loan losses during the first quarter of 2012 compared to the same period in 2011 and the fact that no provision was recorded during the fourth quarter of 2011 is reflective of the decreasing trend in classified loans and a decrease in net charge-offs. Management believes the recorded amount of the allowance for loan losses is appropriate based upon management’s best estimate of probable losses that have been incurred within the existing portfolio of loans. Should any of the factors considered by management in evaluating the appropriate level of the allowance for loan losses change, the Corporation’s estimate of probable loan losses could also change, which could affect the level of future provisions for loan losses.

Net charge-offs during the first quarter of 2012 decreased $7.4 million compared to the first quarter of 2011 and decreased $1.2 million compared to the fourth quarter of 2011. Net charge-offs as a percentage of average loans (on an annualized basis) totaled 0.20% during the first quarter of 2012 decreasing 37 basis points compared to 0.57% during the first quarter of 2011 and 6 basis points compared 0.26% during the fourth quarter of 2011. The ratio of the allowance for loan losses to total loans decreased 6 basis points from 1.38% at December 31, 2011 to 1.32% at March 31, 2012. The overall trend in net charge-offs reflects the continued improvement in the level of classified loans. The Corporation expects the level of net charge-offs to continue to trend downward as the overall credit quality of the loan portfolio continues to improve.

Capital and Liquidity

Capital. Shareholders’ equity totaled $2.3 billion at both March 31, 2012 and December 31, 2011 and $2.1 billion at March 31, 2011. In addition to net income of $61.0 million, other changes in shareholders’ equity during the first three months of 2012 included $28.2 million of dividends paid, $5.5 million in proceeds from stock option exercises and the related tax deficiency of $377 thousand, other comprehensive income, net of tax, of $3.3 million and $2.6 million related to stock-based compensation.

The accumulated other comprehensive income/loss component of shareholders’ equity totaled a net, after-tax, unrealized gain of $244.4 million at March 31, 2012 compared to a net, after-tax, unrealized gain of $247.7 million at December 31, 2011. During the first quarter of 2012, a $5.7 million net after-tax decrease in the accumulated net gain on effective cash flow hedges was partly offset by a $1.5 million net after-tax increase in the accumulated net unrealized gain on securities available for sale and a $799 thousand net after-tax decrease in the accumulated net actuarial loss on defined-benefit post-retirement benefit plans.

Under current regulatory requirements, amounts reported as accumulated other comprehensive income/loss related to securities available for sale, effective cash flow hedges and defined benefit post-retirement benefit plans do not increase or reduce regulatory capital and are not included in the calculation of risk-based capital and leverage ratios. Regulatory agencies for banks and bank holding companies utilize capital guidelines designed to measure Tier 1 and total capital and take into consideration the risk inherent in both on-balance sheet and off-balance sheet items. See Note 7 - Regulatory Matters in the accompanying notes to consolidated financial statements included elsewhere in this report.

The Corporation paid quarterly dividends of $0.46 per common share during the first quarter of 2012 and the fourth quarter of 2011 and a quarterly dividend of $0.45 per common share in the first quarter of 2011. This equates to a dividend payout ratio of 46.3%, 50.9% and 53.1% for each of these periods, respectively.

From time to time, the Corporation’s board of directors has authorized stock repurchase plans. Stock repurchase plans allow the Corporation to proactively manage its capital position and return excess capital to shareholders. Shares purchased under such plans also provide the Corporation with shares of common stock necessary to satisfy obligations related to stock compensation awards. No shares were repurchased under stock repurchase plans during any of the reported periods. See Part II, Item 2 - Unregistered Sales of Equity Securities and Use of Proceeds, included elsewhere in this report, for details of stock repurchases during the quarter.

Liquidity. Liquidity measures the ability to meet current and future cash flow needs as they become due. The liquidity of a financial institution reflects its ability to meet loan requests, to accommodate possible outflows in deposits and to take advantage of interest rate market opportunities. The ability of a financial institution to meet its current financial obligations is a function of its balance sheet structure, its ability to liquidate assets, and its access to alternative sources of funds. The Corporation seeks to ensure its funding needs are met by maintaining a level of liquid funds through asset/liability management.

Asset liquidity is provided by liquid assets which are readily marketable or pledgeable or which will mature in the near future. Liquid assets include cash, interest-bearing deposits in banks, securities available for sale, maturities and cash flow from securities held to maturity, and federal funds sold and resell agreements.

Liability liquidity is provided by access to funding sources which include core deposits and correspondent banks in the Corporation’s natural trade area that maintain accounts with and sell federal funds to Frost Bank, as well as federal funds purchased and repurchase agreements from upstream banks and deposits obtained through financial intermediaries.

Since Cullen/Frost is a holding company and does not conduct operations, its primary sources of liquidity are dividends upstreamed from Frost Bank and borrowings from outside sources. Banking regulations may limit the amount of dividends that may be paid by Frost Bank. See Note 7 - Regulatory Matters in the accompanying notes to consolidated financial statements included elsewhere in this report regarding such dividends. At March 31, 2012, Cullen/Frost had liquid assets, including cash and resell agreements, totaling $197.3 million, which included $6.3 million in cash collateral on deposit with other financial institution counterparties to interest rate swap transactions.

The liquidity position of the Corporation is continuously monitored and adjustments are made to the balance between sources and uses of funds as deemed appropriate. Management is not aware of any events that are reasonably likely to have a material adverse effect on the Corporation’s liquidity, capital resources or operations. In addition, management is not aware of any regulatory recommendations regarding liquidity, which if implemented, would have a material adverse effect on the Corporation.

Accounting Standards Updates

See Note 16 - Accounting Standards Updates in the accompanying notes to consolidated financial statements included elsewhere in this report for details of recently issued accounting pronouncements and their expected impact on the Corporation’s financial statements.

Consolidated Average Balance Sheets and Interest Income Analysis-By-Quarter

(Dollars in thousands - taxable-equivalent basis)


	March 31, 2012								December 31, 2011
	Average Balance			Interest Income/ Expense		Yield/ Cost			Average Balance			Interest Income/ Expense		Yield/ Cost
Assets:
Interest-bearing deposits	$	1,100,867		$	930		0.34	%	$	2,515,512		$	1,903		0.30	%
Federal funds sold and resell agreements		14,021			15		0.43			14,055			17		0.48
Securities:
Taxable		6,665,378			36,066		2.23			5,080,515			34,130		2.78
Tax-exempt		2,256,766			36,023		6.94			2,220,231			36,221		6.94

Total securities		8,922,144			72,089		3.37			7,300,746			70,351		4.02
Loans, net of unearned discounts		8,049,968			98,831		4.94			7,975,198			101,258		5.04

Total Earning Assets and Average Rate Earned		18,087,000			171,865		3.89			17,805,511			173,529		3.95
Cash and due from banks		577,936								545,367
Allowance for loan losses		(111,788	)							(117,006	)
Premises and equipment, net		322,831								321,776
Accrued interest and other assets		1,044,067								1,023,297

Total Assets	$	19,920,046							$	19,578,945


Liabilities:
Non-interest-bearing demand deposits:
Commercial and individual	$	5,643,167							$	5,584,493
Correspondent banks		330,440								327,053
Public funds		425,363								413,854

Total non-interest-bearing demand deposits		6,398,970								6,325,400
Interest-bearing deposits:
Private accounts
Savings and interest checking		2,854,493			425		0.06			2,698,273			432		0.06
Money market deposit accounts		5,682,663			2,969		0.21			5,634,846			3,286		0.23
Time accounts		1,045,009			1,026		0.39			1,088,230			1,102		0.40
Public funds		415,959			152		0.15			382,349			156		0.16

Total interest-bearing deposits		9,998,124			4,572		0.18			9,803,698			4,976		0.20

Total deposits		16,397,094								16,129,098
Federal funds purchased and repurchase agreements		633,303			34		0.02			644,662			35		0.02
Junior subordinated deferrable interest debentures		123,712			1,674		5.41			123,712			1,710		5.53
Subordinated notes payable and other notes		100,000			878		3.51			100,000			1,468		5.87
Federal Home Loan Bank advances		23			—		6.00			28			—		6.00

Total Interest-Bearing Funds and Average Rate Paid		10,855,162			7,158		0.26			10,672,100			8,189		0.31

Accrued interest and other liabilities		348,807								323,513

Total Liabilities		17,602,939								17,321,013
Shareholders’ Equity		2,317,107								2,257,932

Total Liabilities and Shareholders’ Equity	$	19,920,046							$	19,578,945

Net interest income				$	164,707							$	165,340


Net interest spread							3.63	%							3.64	%


Net interest income to total average earning assets							3.73	%							3.76	%

For these computations: (i) average balances are presented on a daily average basis, (ii) information is shown on a taxable-equivalent basis assuming a 35% tax rate, (iii) average loans include loans on non-accrual status, and (iv) average securities include unrealized gains and losses on securities available for sale while yields are based on average amortized cost.

Consolidated Average Balance Sheets and Interest Income Analysis-By-Quarter

(Dollars in thousands - taxable-equivalent basis)


	September 30, 2011								June 30, 2011
	Average Balance			Interest Income/ Expense		Yield/ Cost			Average Balance			Interest Income/ Expense		Yield/ Cost
Assets:
Interest-bearing deposits	$	3,243,562		$	1,811		0.22	%	$	2,339,671		$	1,472		0.25	%
Federal funds sold and resell agreements		15,957			15		0.38			11,517			13		0.45
Securities:
Taxable		3,538,329			30,089		3.57			3,739,158			31,668		3.51
Tax-exempt		2,219,092			36,916		6.98			2,185,129			36,955		6.99

Total securities		5,757,421			67,005		4.88			5,924,287			68,623		4.79
Loans, net of unearned discounts		8,036,183			101,166		4.99			8,080,375			101,201		5.02

Total Earning Assets and Average Rate Earned		17,053,123			169,997		4.03			16,355,850			171,309		4.25
Cash and due from banks		582,192								608,521
Allowance for loan losses		(120,908	)							(125,455	)
Premises and equipment, net		318,443								314,758
Accrued interest and other assets		992,153								1,015,939

Total Assets	$	18,825,003							$	18,169,613


Liabilities:
Non-interest-bearing demand deposits:
Commercial and individual	$	5,232,235							$	4,867,999
Correspondent banks		319,471								317,236
Public funds		353,660								278,782

Total non-interest-bearing demand deposits		5,905,366								5,464,017
Interest-bearing deposits:
Private accounts
Savings and interest checking		2,527,855			430		0.07			2,500,098			668		0.11
Money market deposit accounts		5,501,921			3,498		0.25			5,325,824			3,794		0.29
Time accounts		1,122,534			1,211		0.43			1,136,221			1,293		0.46
Public funds		371,440			167		0.18			417,022			191		0.18

Total interest-bearing deposits		9,523,750			5,306		0.22			9,379,165			5,946		0.25

Total deposits		15,429,116								14,843,182
Federal funds purchased and repurchase agreements		645,794			63		0.04			570,552			83		0.06
Junior subordinated deferrable interest debentures		123,712			1,710		5.53			123,712			1,691		5.47
Subordinated notes payable and other notes		150,543			2,338		6.21			250,000			4,080		6.53
Federal Home Loan Bank advances		33			1		6.00			37			—		6.00

Total Interest-Bearing Funds and Average Rate Paid		10,443,832			9,418		0.36			10,323,466			11,800		0.46

Accrued interest and other liabilities		267,016								245,596

Total Liabilities		16,616,214								16,033,079
Shareholders’ Equity		2,208,789								2,136,534

Total Liabilities and Shareholders’ Equity	$	18,825,003							$	18,169,613

Net interest income				$	160,579							$	159,509


Net interest spread							3.67	%							3.79	%


Net interest income to total average earning assets							3.81	%							3.95	%

Consolidated Average Balance Sheets and Interest Income Analysis-By-Quarter

(Dollars in thousands - taxable-equivalent basis)


	March 31, 2011
	Average Balance			Interest Income/ Expense		Yield/ Cost
Assets:
Interest-bearing deposits	$	1,867,858		$	1,171		0.25	%
Federal funds sold and resell agreements		16,517			16		0.39
Securities:
Taxable		3,789,497			31,185		3.39
Tax-exempt		2,067,194			36,246		7.15

Total securities		5,856,691			67,431		4.73
Loans, net of unearned discounts		8,081,356			99,854		5.01

Total Earning Assets and Average Rate Earned		15,822,422			168,472		4.34
Cash and due from banks		652,399
Allowance for loan losses		(127,328	)
Premises and equipment, net		316,036
Accrued interest and other assets		1,014,253

Total Assets	$	17,677,782


Liabilities:
Non-interest-bearing demand deposits:
Commercial and individual	$	4,679,602
Correspondent banks		336,218
Public funds		231,651

Total non-interest-bearing demand deposits		5,247,471
Interest-bearing deposits:
Private accounts
Savings and interest checking		2,437,774			585		0.10
Money market deposit accounts		5,159,976			3,753		0.29
Time accounts		1,164,835			1,409		0.49
Public funds		458,489			204		0.18

Total interest-bearing deposits		9,221,074			5,951		0.26

Total deposits		14,468,545
Federal funds purchased and repurchase agreements		521,731			131		0.10
Junior subordinated deferrable interest debentures		123,712			1,672		5.41
Subordinated notes payable and other notes		250,000			4,079		6.53
Federal Home Loan Bank advances		42			1		6.00

Total Interest-Bearing Funds and Average Rate Paid		10,116,559			11,834		0.47

Accrued interest and other liabilities		230,951

Total Liabilities		15,594,981
Shareholders’ Equity		2,082,801

Total Liabilities and Shareholders’ Equity	$	17,677,782

Net interest income				$	156,638


Net interest spread							3.87	%


Net interest income to total average earning assets							4.03	%

Item 3.

Quantitative and Qualitative Disclosures About Market Risk

The disclosures set forth in this item are qualified by the section captioned “Forward-Looking Statements and Factors that Could Affect Future Results” included in Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations of this report and other cautionary statements set forth elsewhere in this report.

Refer to the discussion of market risks included in Item 7A. Quantitative and Qualitative Disclosures About Market Risk in the 2011 Form 10-K. There has been no significant change in the types of market risks faced by the Corporation since December 31, 2011.

The Corporation utilizes an earnings simulation model as the primary quantitative tool in measuring the amount of interest rate risk associated with changing market rates. The model quantifies the effects of various interest rate scenarios on projected net interest income and net income over the next 12 months. The model measures the impact on net interest income relative to a base case scenario of hypothetical fluctuations in interest rates over the next 12 months. These simulations incorporate assumptions regarding balance sheet growth and mix, pricing and the repricing and maturity characteristics of the existing and projected balance sheet. The impact of interest rate derivatives, such as interest rate swaps, caps and floors, is also included in the model. Other interest rate-related risks such as prepayment, basis and option risk are also considered.

For modeling purposes, as of March 31, 2012, the model simulations projected that 100 and 200 basis point increases in interest rates would result in negative variances in net interest income of 1.8% and 2.7%, respectively, relative to the base case over the next 12 months, while a decrease in interest rates of 25 basis points would result in a negative variance in net interest income of 1.5% relative to the base case over the next 12 months. The March 31, 2012 model simulations were impacted by the assumption, for modeling purposes, that the Corporation will begin to pay interest on demand deposits in the second quarter of 2012, as further discussed below. As of March 31, 2011, the model simulations projected that 100 and 200 basis point increases in interest rates would result in negative variances in net interest income of 0.5% and 0.6%, respectively, relative to the base case over the next 12 months, while a decrease in interest rates of 25 basis points would result in a negative variance in net interest income of 0.4% relative to the base case over the next 12 months. The likelihood of a decrease in interest rates beyond 25 basis points as of March 31, 2012 and 2011 was considered remote given prevailing interest rate levels.

The Corporation has experienced significant growth in deposits in 2012 compared to 2011 which funded a significant increase in fixed-rate securities. This increase in fixed-rate securities coupled with the assumption, for modeling purposes, that the Corporation will begin paying interest on demand deposits that were previously non-interest-bearing as a result of recent legislation, as further discussed below, resulted in the model simulations indicating that the Corporation’s balance sheet will become more liability sensitive relative to the base case over the next 12 months.

As mentioned above, financial regulatory reform legislation entitled the “Dodd-Frank Wall Street Reform and Consumer Protection Act” (the “Dodd-Frank Act”) repealed the federal prohibition on the payment of interest on demand deposits, thereby permitting depository institutions to pay interest on business transaction and other accounts beginning July 21, 2011. Although the ultimate impact of this legislation on the Corporation has not yet been determined, the Corporation may begin to incur interest costs associated with demand deposits in the future as market conditions warrant. If this were to occur, the Corporation’s balance sheet would likely become more liability sensitive. Because the interest rate that will ultimately be paid on these demand deposits depends upon a variety of factors, some of which are beyond the Corporation’s control, the Corporation assumed an aggressive pricing structure for the purposes of the model simulations discussed above with interest payments beginning in the second quarter of 2012. Should the actual interest rate paid on demand deposits be less than the rate assumed in the model simulations, or should the interest rate paid for such deposits become an administered rate with less direct correlation to movements in general market interest rates, the Corporation’s balance sheet could be less liability sensitive than the model simulations currently indicate.

As of March 31, 2012, the effects of a 200 basis point increase and a 25 basis point decrease in interest rates on the Corporation’s derivative holdings would not result in a significant variance in the Corporation’s net interest income.

The effects of hypothetical fluctuations in interest rates on the Corporation’s securities classified as “trading” under ASC Topic 320, “Investments—Debt and Equity Securities,” are not significant, and, as such, separate quantitative disclosure is not presented.

Item 4.

Controls and Procedures

As of the end of the period covered by this Quarterly Report on Form 10-Q, an evaluation was carried out by the Corporation’s management, with the participation of its Chief Executive Officer and Chief Financial Officer, of the effectiveness of the Corporation’s disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934). Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the disclosure controls and procedures were effective as of the end of the period covered by this report. No change in the Corporation’s internal control over financial reporting (as defined in Rule 13a-15(f) under the Securities Exchange Act of 1934) occurred during the last fiscal quarter that materially affected, or is reasonably likely to materially affect, the Corporation’s internal control over financial reporting.

Part II. Other Information

Item 1.

Legal Proceedings

The Corporation and its subsidiaries are subject to various claims and legal actions that have arisen in the course of conducting business. Management does not expect the ultimate disposition of these matters to have a material adverse impact on the Corporation’s financial statements.

Item 1A.

Risk Factors

There has been no material change in the risk factors previously disclosed under Item 1A. of the Corporation’s 2011 Form 10-K.

Item 2.

Unregistered Sales of Equity Securities and Use of Proceeds

The following table provides information with respect to purchases made by or on behalf of the Corporation or any “affiliated purchaser” (as defined in Rule 10b-18(a)(3) under the Securities Exchange Act of 1934), of the Corporation’s common stock during the three months ended March 31, 2012.

Period

Total Number of
Shares Purchased

Average Price
Paid Per Share

Total Number of
Shares Purchased
as Part of Publicly
Announced Plan

Maximum
Number of Shares
That May Yet Be
Purchased Under
the Plan at the
End of the Period

January 1, 2012 to January 31, 2012

—

February 1, 2012 to February 29, 2012

—

March 1, 2012 to March 31, 2012

—

Total

—

Item 3.

Defaults Upon Senior Securities

None.

Item 4.

Mine Safety Disclosures

None.

Item 5.

Other Information

None.

Item 6.

Exhibits

(a) Exhibits


Exhibit Number		Description

31.1		Rule 13a-14(a) Certification of the Corporation’s Chief Executive Officer

31.2		Rule 13a-14(a) Certification of the Corporation’s Chief Financial Officer

32.1+		Section 1350 Certification of the Corporation’s Chief Executive Officer

32.2+		Section 1350 Certification of the Corporation’s Chief Financial Officer

101++		Interactive Data File

This exhibit shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, or otherwise subject to the liability of that section, and shall not be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934.

++	As provided in Rule 406T of Regulation S-T, this information is furnished and not filed for purposes of Sections 11 and 12 of the Securities Act of 1933 and Section 18 of the Securities Exchange Act of 1934

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.


	Cullen/Frost Bankers, Inc.
	(Registrant)

Date: April 25, 2012	By:	/s/ Phillip D. Green
	Phillip D. Green
	Group Executive Vice President
	and Chief Financial Officer
	(Duly Authorized Officer, Principal Financial
	Officer and Principal Accounting Officer)