Exhibit 99

	For additional information:
		Rick Green
		President & CEO
		Kerby E. Crowell
		EVP & CFO
For Immediate Release		(405) 372-2230

Southwest Bancorp 1Q Results: One-Time Cash Receivable Write-Off Reduces Net Income; Effect on Assets and Capital Not Material; Portfolio Loans Grow 20%

     April 24, 2007, Stillwater, Oklahoma . . . . Southwest Bancorp, Inc. (Nasdaq National Market—OKSB), (“Southwest”), today reported net income for the first quarter of 2007 of $4.5 million, a 28% decrease from the $6.3 million reported for the first quarter of 2006. Diluted earnings per share were $0.31 compared to $0.44 per share for the 2006 period, a decrease of 30%. The first quarter results reflect a one-time write-off of the $2.5 million receivable for cash that was in the custody of an armored transportation company. This is the estimated maximum loss related to the receivable, and does not reflect potential recoveries, insurance coverage, or additional expenses of pursuing recoveries. The after tax effect of this write-off was $1.5 million or $0.10 per share. With related legal costs of approximately $300,000, this matter was responsible for a reduction in net income of $1.7 million or $0.12 per share. See “Cash Receivable” discussion below. The write off did not have a material effect on the assets or capital of Southwest or Stillwater National Bank and Trust (“Stillwater National”).

     Rick Green, President and Chief Executive Officer, stated, “The receivable write-off adversely affected the bottom line for the quarter. But we also had good news. At quarter end, portfolio loans were almost $1.7 billion, up by 20% over first quarter 2006, and 4% over last year-end. The increases in portfolio loans are the direct result of our geographic growth strategy. At March 31, 2007, our Texas and Kansas operations accounted for $777 million, almost half of total portfolio loans.”

Highlights

•   Portfolio loans:	$1.7 billion, a 4% increase from year-end 2006 and a 20% increase from first quarter 2006
•   First quarter net income:	$4.5 million, a 28% decrease from first quarter 2006
•   Return on average equity:	9.04% for the first quarter 2007

(Please see Financial Tables 1 through 6 for additional financial information.)

Results of Operations

     The $1.8 million, or 28%, decrease in quarterly net income from the first quarter 2006 was the result of a $3.6 million (28%) increase in other expense and a $628,000 (16%) decrease in other income, offset in part by a $472,000 (2%) increase in net interest income, an $815,000 (30%) decrease in provision for loan losses, and a $1.2 million (30%) decrease in income taxes. Net income for the quarter included the effects of the $2.5 million write-off, approximately $300,000 in related legal expenses, and a $450,000 investment impairment charge reflected in securities losses.

     The $472,000 increase in net interest income for the quarter was primarily the result of increased loan yields. Although the provision for loan losses decreased, the allowance for loan losses increased to 1.56% of total loans at quarter end, up from 1.52% at December 31, 2006. The decrease in other income was mainly the result of a

Southwest Bancorp 1Q Results

$569,000 decrease in service charges mainly due to the decrease in the number of ATMs owned by Cash Source, Inc. (“CSI”), a subsidiary of Stillwater National, a $185,000 increase in net securities losses, mostly due to the $450,000 investment impairment charge, and a $207,000 decline in other noninterest income, offset in part by a $303,000 increase in gains on sales of loans. The decline in ATM charges related to reduced operations of CSI. (See “Cash Receivable,” below.) Although CSI’s ATM fees decreased in the first quarter, CSI did not produce a significant contribution to net income in the first quarter 2006 or the year ended December 31, 2006, and the reduction in its owned ATMs will not have a significant effect on future net income.

Financial Condition

     At March 31, 2007, total assets were $2.2 billion, a $23.6 million, or 1% increase from year-end 2006. Shareholders’ equity at March 31, 2007 totaled $201.8 million, a $4.3 million, or 2%, increase from December 31, 2006. Core deposits grew by $39.6 million, or 4%, since year end 2006. Consistent with our previous disclosures, student lending balances have decreased by $79.6 million from year-end 2006 and are expected to continue to decrease.

     Portfolio loans increased by $64.5 million, or 4%, during the first three months of 2007. Portfolio loans increased by $275.4 million, or 20%, from the first quarter 2006. Portfolio loans exclude loans held for sale, almost of all of which are student loans. Southwest’s growth in portfolio loans more than offset the expected reduction in loans held for sale.

     Southwest’s Texas and Kansas offices were responsible for an $86.8 million increase in total portfolio loans for the first quarter of 2007. At March 31, 2007, Southwest’s seven Texas and two Kansas offices accounted for $776.7 million in loans, or 47% of total portfolio loans, up from 43% at year-end 2006. Southwest added two experienced lenders in the first quarter to support the Texas growth strategy.

     Southwest’s Oklahoma offices were responsible for a $22.4 million decrease in total portfolio loans for the first quarter of 2007. Texas and Kansas offices more than offset this decrease, driving the increase in total portfolio loans.

     At March 31, 2007, the allowance for loan losses was $27.7 million, an increase of $435,000, or 2%, from the allowance for loan losses at December 31, 2006. This change is a result of growth in performing commercial and commercial real estate loans and an increase in the historical loss rate on performing secured commercial loans, offset in part by a decrease in the allowances on impaired loans and reductions in the allowance related to potential problem loans. At March 31, 2007, the allowance for loan losses was 1.56% of total loans, compared to 1.52% at year-end 2006. The unallocated allowance at March 31, 2007 was $2.3 million, or 8% of the total allowance. Management believes the amount of the allowance is appropriate, given its systematic methodology of calculation. Changes in the amount of the allowance resulted from the application of that methodology, which is designed to estimate inherent losses on total loans in the portfolio, including those on nonperforming loans.

     The reserve for unfunded loan commitments was $1.9 million at March 31, 2007 and at December 31, 2006.

     Other real estate at March 31, 2007 was $1.9 million, approximately the same balance as year-end 2006. Total nonperforming assets at March 31, 2007 were $31.3 million compared to $31.2 million at December 31, 2006.

     Nonaccrual loans totaled $27.0 million at March 31, 2007 compared to $26.7 million at December 31, 2006. Total nonperforming loans of $29.4 million increased $83,000 from year-end 2006 and represented 1.66% of total loans, compared to 1.64% at year-end 2006. At March 31, 2007, $1.4 million, or 5%, of loans classified as nonperforming were guaranteed by United States agencies or U.S. government sponsored entities.

     Performing loans considered potential problem loans, loans which are not included in the past due, nonaccrual, or restructured categories, but for which known information about possible credit problems cause management to be uncertain as to the ability of the borrowers to comply with the present loan repayment terms, amounted to approximately $52.3 million at March 31, 2007, compared to $50.6 million at December 31, 2006, a 3% increase.

Cash Receivable

     As previously disclosed, in December 2006, an armored transportation company failed to deliver to Stillwater National approximately $1.3 million in cash then due to it from certain ATMs owned by CSI. CSI discovered other cash shortages arising from the same company and Stillwater National has removed all cash from the other CSI

2

Southwest Bancorp 1Q Results

ATMs for which that company provided cash transportation. Earlier this year, Southwest estimated the maximum total potential loss from these cash shortages as $2.5 million, but was unable to reasonably estimate the actual loss.

     Stillwater National and CSI have filed legal action for the recovery of their funds, have notified law enforcement and bank regulatory authorities and their insurers, and continue to investigate the possible locations of the missing cash and other means of recovery, including the extent of insurance coverage. As a result of its continuing investigations including a continuing analysis of the custodian’s records, which were first obtained in March 2007, Southwest has estimated the loss as the total amount of the receivable, and has recorded a complete write-off of that amount as reflected in the financial statements for the first quarter of 2007. The financial statements also reflect related legal expenses incurred by Southwest in the first quarter of approximately $300,000. Southwest continues to vigorously pursue its investigation and efforts to recover the missing cash or otherwise mitigate its damages. Southwest is in the process of preparing its claim for insurance, which it intends to file in the second or early third quarter of 2007.

Southwest Bancorp and Subsidiaries

     Southwest Bancorp is the financial holding company for Stillwater National, SNB Bank of Wichita,, Healthcare Strategic Support, Inc., and Business Consulting Group, Inc. Through its subsidiaries, Southwest offers commercial and consumer lending, deposit, and investment services, and specialized cash management, consulting, and other financial services from offices in Oklahoma City, Stillwater, Tulsa, and Chickasha, Oklahoma; Austin, Dallas, Houston and San Antonio, Texas; and Kansas City and Wichita, Kansas, and on the Internet, through SNB DirectBanker^®.

     Southwest focuses on converting its strategic vision into long-term shareholder value. This vision includes long-term goals for increasing earnings and banking assets from operations in Oklahoma, Texas, and Kansas that specialize in serving medical, professional, business, and commercial real estate customers and from more traditional banking operations, including community banking and student lending. Southwest’s strategic growth goals include growth from existing and additional offices in carefully selected markets in Texas and other states with concentrations of healthcare and health professionals, businesses, and their managers and owners, and commercial and commercial real estate borrowers, and careful expansion of community banking operations.

     Southwest was organized in 1981 as the holding company for Stillwater National, which was chartered in 1894. At March 31, 2007, Southwest had total assets of $2.2 billion, deposits of $1.8 billion, and shareholders’ equity of $201.8 million. Southwest became a public company in late 1993 with assets of approximately $434.0 million. Southwest’s growth to date has been accomplished without significant banking acquisitions.

     Southwest’s banking philosophy is to provide a high level of customer service, a wide range of financial services, and products responsive to customer needs with a focus on serving healthcare and health professionals, businesses and their managers and owners, and commercial and commercial real estate borrowers. This philosophy has led to the development of a line of deposit, lending, and other financial products that respond to professional and commercial customer needs for speed, efficiency, and information, and which complement more traditional banking products. Southwest seeks to build close relationships with businesses, professionals and their principals, and to service their evolving banking needs throughout their business development and professional lives.

     Southwest has developed a highly automated lockbox, imaging, and information service for commercial customers called “SNB Digital Lockbox,” and deposit products that automatically sweep excess funds from commercial demand deposit accounts and invest them in interest bearing funds. Other specialized financial services include integrated document imaging and cash management services designed to help our customers in the healthcare industry and other record-intensive enterprises operate more efficiently.

     Southwest’s two management consulting subsidiaries complement its banking services and help differentiate Southwest from competitors. Healthcare Strategic Support, Inc. provides management consulting services for physicians, hospitals, and healthcare groups. Business Consulting Group, Inc. provides marketing, strategic, logistics, and operations consulting for both small and large commercial enterprises.

     Southwest’s common stock is traded on the NASDAQ National Market under the symbol OKSB.

Forward-Looking Statements

     This Press Release includes forward-looking statements, such as: statements of Southwest’s goals, intentions, and expectations; estimates of risks and of future costs and benefits; assessments of the amount and timing of

3

Southwest Bancorp 1Q Results

problem loan payoffs and loan losses; off-balance sheet risk and market risk; and statements of Southwest’s ability to achieve financial and other goals. These forward-looking statements are subject to significant uncertainties because they are based upon: future interest rates, market behavior, and other economic conditions; future laws and regulations; and a variety of other matters. Because of these uncertainties, the actual future results may be materially different from the results indicated by these forward-looking statements. In addition, Southwest’s past growth and performance do not necessarily indicate its future results.

4

Southwest Bancorp 1Q Results

Financial Tables

Financial Highlights	Table 1
Consolidated Statements of Financial Condition	Table 2
Consolidated Statements of Operations	Table 3
Average Balances, Yields, and Rates-Quarterly	Table 4
Summary Financial Data by Quarter-2007 and 2006	Table 5
Supplemental Analytical Data by Quarter-2007 and 2006	Table 6

5

SOUTHWEST BANCORP, INC.	Table 1
UNAUDITED FINANCIAL HIGHLIGHTS
(Dollars in thousands except per share)

	First Quarter									Fourth Quarter
QUARTERLY HIGHLIGHTS							%						%
	2007			2006			Change			2006			Change
Operations
Net interest income	$	22,714		$	22,242			2	%	$	24,039			(6	)%
Provision for loan losses		1,861			2,676			(30	)		2,567			(28	)
Other income		3,340			3,968			(16	)		4,344			(23	)
Other expense		16,831			13,190			28			15,691			7
Income before taxes		7,362			10,344			(29	)		10,125			(27	)
Taxes on income		2,862			4,065			(30	)		3,672			(22	)
Net income		4,500			6,279			(28	)		6,453			(30	)
Diluted earnings per share		0.31			0.44			(30	)		0.44			(30	)
Balance Sheet
Total assets		2,194,179			2,145,839			2			2,170,628			1
Loans held for sale		108,025			383,164			(72	)		188,464			(43	)
Portfolio loans		1,667,195			1,391,817			20			1,602,726			4
Total deposits		1,803,181			1,699,212			6			1,765,611			2
Total shareholders’ equity		201,777			176,945			14			197,510			2
Book value per share		14.14			12.52			13			13.87			2
Key Ratios
Net interest margin		4.34	%		4.34	%					4.47	%
Efficiency ratio (GAAP-based)		64.60			50.32						55.28
Allowance to total loans		1.56			1.39						1.52
Nonperforming loans to total loans		1.66			1.43						1.64
Shareholders’ equity to total assets		9.20			8.25						9.10
Return on average assets		0.83			1.17						1.15
Return on average equity		9.04			14.48						13.06

SOUTHWEST BANCORP, INC.	Table 2
UNAUDITED CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION
(Dollars in thousands, except per share)

	March 31,			December 31,			March 31,
	2007			2006			2006
Assets
Cash and due from banks	$	29,542		$	46,618		$	44,335
Federal funds sold		69,700			11,000			8,000
Cash and cash equivalents		99,242			57,618			52,335
Investment securities:
Held to maturity. Fair value: $4,286 $1,621 $1,528		4,332			1,630			1,534
Available for sale. Amortized cost: $258,678 $258,742 $264,669		257,329			255,904			258,409
Federal Reserve and FHLB Stock, at cost		12,445			12,315			11,915
Loans held for sale		108,025			188,464			383,164
Loans receivable		1,667,195			1,602,726			1,391,817
Less: Allowance for loan losses		(27,728	)		(27,293	)		(24,760	)
Net loans receivable		1,639,467			1,575,433			1,367,057
Accrued interest receivable		21,774			24,269			15,173
Premises and equipment, net		21,945			21,818			20,862
Other real estate owned		1,869			1,873			7,124
Goodwill		1,213			1,213			194
Other intangible assets, net		2,981			3,069			1,396
Other assets		23,557			27,022			26,676
Total assets	$	2,194,179		$	2,170,628		$	2,145,839
Liabilities and shareholders’ equity
Deposits:
Noninterest-bearing demand	$	251,777		$	254,415		$	229,979
Interest-bearing demand		63,741			55,396			58,188
Money market accounts		394,668			371,912			389,688
Savings accounts		11,196			11,273			9,233
Time deposits of $100,000 or more		646,668			648,664			637,574
Other time deposits		435,131			423,951			374,550
Total deposits		1,803,181			1,765,611			1,699,212
Accrued interest payable		11,764			13,260			8,906
Income tax payable		—			1,136			3,022
Other liabilities		7,852			8,624			7,745
Other borrowings		123,212			138,094			203,616
Subordinated debentures		46,393			46,393			46,393
Total liabilities		1,992,402			1,973,118			1,968,894
Shareholders’ equity
Common stock — $1 par value; 20,000,000 shares authorized; 14,658,042 shares issued		14,658			14,658			14,658
Paid in capital		46,314			45,901			45,563
Retained earnings		148,574			146,197			129,996
Accumulated other comprehensive loss		(826	)		(1,738	)		(3,832	)
Treasury stock, at cost, 385,632 417,535 524,867 shares		(6,943	)		(7,508	)		(9,440	)
Total shareholders’ equity		201,777			197,510			176,945
Total liabilities and shareholders’ equity	$	2,194,179		$	2,170,628		$	2,145,839

SOUTHWEST BANCORP, INC.	Table 3
UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS
(Dollars in thousands except per share)

	For the three months
	ended March 31,
	2007			2006
Interest income
Loans	$	40,286		$	36,718
Investment securities		2,679			2,670
Other interest-earning assets		65			20
Total interest income		43,030			39,408
Interest expense
Interest-bearing deposits		17,223			13,405
Other borrowings		2,131			2,889
Subordinated debentures		962			872
Total interest expense		20,316			17,166
Net interest income		22,714			22,242
Provision for loan losses		1,861			2,676
Other income
Service charges and fees		2,235			2,774
Gain on sales of loans		1,208			905
Gain (loss) on investment securities		(448	)		(263	)
Other noninterest income		345			552
Total other income		3,340			3,968
Other expense
Salaries and employee benefits		8,125			7,240
Occupancy		2,403			2,567
FDIC and other insurance		123			127
Other real estate, net		(69	)		108
General and administrative		6,249			3,148
Total other expenses		16,831			13,190
Income before taxes		7,362			10,344
Taxes on income		2,862			4,065
Net income	$	4,500		$	6,279
Basic earnings per common share	$	0.32		$	0.45
Diluted earnings per common share		0.31			0.44
Cash dividends declared per share		0.0925			0.0825

SOUTHWEST BANCORP, INC.	Table 4
UNAUDITED AVERAGE BALANCES, YIELDS, AND RATES
(Dollars in thousands)

	For the three months ended March 31,
	2007								2006
	Average					Average			Average					Average
	Balance			Interest		Yield/Rate			Balance			Interest		Yield/Rate
Assets
Loans	$	1,846,844		$	40,286		8.85	%	$	1,806,159		$	36,718		8.24	%
Investment securities		272,139			2,679		3.99			272,088			2,670		3.98
Other interest-earning assets		5,210			65		5.06			1,918			20		4.23
Total interest-earning assets		2,124,193			43,030		8.22			2,080,165			39,408		7.68
Other assets		81,727								96,913
Total assets	$	2,205,920							$	2,177,078
Liabilities and Shareholders’ Equity
Interest-bearing demand deposits	$	60,462		$	81		0.54	%	$	55,455		$	63		0.46	%
Money market accounts		371,496			3,962		4.33			397,990			3,748		3.82
Savings accounts		11,106			20		0.73			8,890			5		0.23
Time deposits		1,078,439			13,160		4.95			987,972			9,589		3.94
Total interest-bearing deposits		1,521,503			17,223		4.59			1,450,307			13,405		3.75
Other borrowings		175,514			2,131		4.92			268,112			2,889		4.37
Subordinated debentures		46,393			962		8.29			46,393			872		7.52
Total interest-bearing liabilities		1,743,410			20,316		4.73			1,764,812			17,166		3.94
Noninterest-bearing demand deposits		238,532								219,108
Other liabilities		22,080								17,266
Shareholders’ equity		201,898								175,892
Total liabilities and shareholders’ equity	$	2,205,920							$	2,177,078
Net interest income and spread				$	22,714		3.49	%				$	22,242		3.74	%
Net interest margin (1)							4.34	%							4.34	%
Average interest-earning assets to average interest-bearing liabilities		121.84	%							117.87	%

(1) Net interest margin = annualized net interest income / average interest-earning assets

SOUTHWEST BANCORP, INC.	Table 5
UNAUDITED SUMMARY FINANCIAL DATA
(Dollars in thousands except per share)

	2007			2006
	Mar. 31			Dec. 31		Sep. 30		Jun. 30			Mar. 31
OPERATIONS
Interest income:
Loans	$	40,286		$	42,034	$	41,074	$	39,047		$	36,718
Investment securities		2,679			2,661		2,686		2,705			2,670
Other interest-earning assets		65			28		57		60			20
Total interest income		43,030			44,723		43,817		41,812			39,408
Interest expense:
Interest bearing demand deposits		81			62		79		78			63
Money market accounts		3,962			3,979		4,066		4,227			3,748
Savings accounts		20			20		19		6			5
Time deposits of $100,000 or more		8,132			8,121		8,106		7,478			6,182
Other time deposits		5,028			4,935		4,578		3,943			3,407
Total interest-bearing deposits		17,223			17,117		16,848		15,732			13,405
Other borrowings		2,131			2,578		2,281		2,275			2,889
Subordinated debentures		962			989		992		944			872
Total interest expense		20,316			20,684		20,121		18,951			17,166
Net interest income		22,714			24,039		23,696		22,861			22,242
Provision for loan losses		1,861			2,567		3,006		3,316			2,676
Other income:
Service charges and fees		2,235			2,837		2,872		3,009			2,774
Gain on sales of loans		1,208			877		616		1,040			905
Gain (loss) on investment securities		(448	)		525		60		(71	)		(263	)
Other noninterest income		345			105		411		527			552
Total other income		3,340			4,344		3,959		4,505			3,968
Other expense:
Salaries and employee benefits		8,125			8,392		7,477		7,788			7,240
Occupancy		2,403			2,673		2,520		2,430			2,567
FDIC and other insurance		123			132		128		124			127
Other real estate, net		(69	)		30		122		26			108
General and administrative		6,249			4,464		3,663		3,484			3,148
Total other expenses		16,831			15,691		13,910		13,852			13,190
Income before taxes		7,362			10,125		10,739		10,198			10,344
Taxes on income		2,862			3,672		4,100		3,572			4,065
Net income	$	4,500		$	6,453	$	6,639	$	6,626		$	6,279
PER SHARE DATA
Basic earnings per common share	$	0.32		$	0.45	$	0.47	$	0.46		$	0.45
Diluted earnings per common share		0.31			0.44		0.46		0.45			0.44
Cash dividends declared per share		0.0925			0.0825		0.0825		0.0825			0.0825
Book value per share		14.14			13.87		13.44		12.89			12.52
Tangible book value per share		14.05			13.78		13.37		12.88			12.51
Weighted average shares outstanding:
Basic earnings per common share		14,263,698			14,230,015		14,206,947		14,151,442			14,075,998
Diluted		14,642,913			14,562,343		14,533,573		14,470,954			14,406,911
OTHER FINANCIAL DATA
Investment securities	$	274,106		$	269,849	$	269,818	$	269,736		$	271,858
Loans held for sale		108,025			188,464		257,689		318,477			383,164
Portfolio loans		1,667,195			1,602,726		1,541,738		1,457,705			1,391,817
Total loans		1,775,220			1,791,190		1,799,427		1,776,182			1,774,981
Total assets		2,194,179			2,170,628		2,157,738		2,188,102			2,145,839
Total deposits		1,803,181			1,765,611		1,740,564		1,764,774			1,699,212
Other borrowings		123,212			138,094		157,740		170,904			203,616
Subordinated debentures		46,393			46,393		46,393		46,393			46,393
Total shareholders’ equity		201,777			197,510		191,231		182,700			176,945
Mortgage servicing portfolio		134,259			135,904		131,688		134,414			132,825

Continued

SOUTHWEST BANCORP, INC.	Table 5
UNAUDITED SUMMARY FINANCIAL DATA	Continued
(Dollars in thousands except per share)

	2007			2006
	Mar. 31			Dec. 31			Sep. 30			Jun. 30			Mar. 31
PERFORMANCE RATIOS
Return on average assets		0.83	%		1.15	%		1.20	%		1.21	%		1.17	%
Return on average equity		9.04			13.06			13.94			14.59			14.48
Net interest margin		4.34			4.47			4.47			4.36			4.34
Dividends declared to net income		29.32			18.20			17.68			17.63			18.54
Effective tax rate		38.88			36.27			38.18			35.03			39.30
Efficiency ratio		64.60			55.28			50.30			50.62			50.32
ASSET QUALITY RATIOS
Nonperforming assets to total loans and other real estate owned		1.76	%		1.74	%		1.83	%		1.61	%		1.82	%
Nonperforming loans to total loans		1.66			1.64			1.72			1.49			1.43
Net loan charge-offs to average total loans		0.31			0.71			0.28			0.38			0.39
Allowance for loan losses to total loans		1.56			1.52			1.56			1.48			1.39
Allowance for loan losses to nonperforming loans		94.18			92.97			90.52			99.67			97.80
CAPITAL RATIOS
Average total shareholders’ equity to average assets		9.15	%		8.84	%		8.62	%		8.31	%		8.08	%
Leverage ratio		11.12			10.91			10.84			10.58			10.37
Tier 1 capital to risk-weighted assets		12.44			12.25			12.53			12.54			12.62
Total capital to risk-weighted assets		13.68			13.50			13.80			13.80			13.87
SEGMENT LOANS
Oklahoma banking	$	890,503		$	912,862		$	889,453		$	844,047		$	846,045
Texas and Kansas banking		776,692			689,864			652,285			613,658			545,825
Subtotal		1,667,195			1,602,726			1,541,738			1,457,705			1,391,870
Secondary market		108,025			188,464			257,689			318,477			383,164
Other operations		—			—			—			—			(53	)
Total loans	$	1,775,220		$	1,791,190		$	1,799,427		$	1,776,182		$	1,774,981
SEGMENT NET INCOME*
Oklahoma banking	$	4,284		$	4,102		$	3,988		$	3,629		$	3,685
Texas and Kansas banking		2,085			1,368			1,479			1,618			1,774
Subtotal		6,369			5,470			5,467			5,247			5,459
Secondary market		753			1,279			1,355			1,739			1,694
Other operations		(2,622	)		(296	)		(183	)		(360	)		(874	)
Total net income	$	4,500		$	6,453		$	6,639		$	6,626		$	6,279
OFFICES AND EMPLOYEES
FTE Employees		443			429			430			409			390
ATM’s		39			125			302			296			297
Branches		15			15			15			13			13
Loan production offices		3			3			3			3			2
Assets per employee	$	4,953		$	5,060		$	5,018		$	5,350		$	5,502

Balance sheet amounts are as of period end unless otherwise noted.
*	In 2007, Southwest revised its methodology for presenting segment net income to reflect capital pricing.
	Segment net income for prior periods above have been restated to reflect this change.

SOUTHWEST BANCORP, INC.	Table 6
UNAUDITED SUPPLEMENTAL ANALYTICAL DATA
(Dollars in thousands except per share)

	2007			2006
	Mar. 31			Dec. 31			Sep. 30			Jun. 30			Mar. 31
LOAN COMPOSITION
Real estate mortgage:
Commercial	$	582,440		$	609,271		$	615,495		$	579,966		$	573,842
One-to-four family residential		83,312			91,441			94,966			97,513			91,007
Real estate construction		517,199			453,750			383,751			366,247			302,698
Commercial		457,838			424,189			421,173			389,525			401,820
Installment and consumer:
Guaranteed student loans		101,905			181,458			252,664			312,888			378,372
Other		32,526			31,081			31,378			30,043			27,242
Total loans, including held for sale		1,775,220			1,791,190			1,799,427			1,776,182			1,774,981
Less allowance for loan losses		(27,728	)		(27,293	)		(28,064	)		(26,341	)		(24,760	)
Total loans, net	$	1,747,492		$	1,763,897		$	1,771,363		$	1,749,841		$	1,750,221
By statement of condition category:
Loans held for sale:
Student loans	$	101,905		$	181,458		$	252,664		$	312,888		$	378,372
One-to-four family residential		4,113			4,654			2,506			2,583			1,718
Other		2,007			2,352			2,519			3,006			3,074
Total loans held for sale		108,025			188,464			257,689			318,477			383,164
Portfolio loans		1,667,195			1,602,726			1,541,738			1,457,705			1,391,817
Total loans before allowance	$	1,775,220		$	1,791,190		$	1,799,427		$	1,776,182		$	1,774,981
DEPOSIT COMPOSITION
Non-interest bearing demand	$	251,777		$	254,415		$	245,335		$	235,649		$	229,979
Interest-bearing demand		63,741			55,396			58,037			62,114			58,188
Money market accounts		394,668			371,912			358,812			383,772			389,688
Savings accounts		11,196			11,273			10,931			8,895			9,233
Time deposits of $100,000 or more		646,668			648,664			646,849			678,660			637,574
Other time deposits		435,131			423,951			420,600			395,684			374,550
Total deposits	$	1,803,181		$	1,765,611		$	1,740,564		$	1,764,774		$	1,699,212
NONPERFORMING ASSETS
Nonaccrual loans	$	26,978		$	26,735		$	23,913		$	23,135		$	23,555
90 days past due and accruing		2,462			2,622			7,090			3,293			1,763
Total nonperforming loans		29,440			29,357			31,003			26,428			25,318
Other real estate loans		1,869			1,873			1,878			2,143			7,124
Total nonperforming assets	$	31,309		$	31,230		$	32,881		$	28,571		$	32,442
ALLOWANCE ACTIVITY
Balance, beginning of period	$	27,293		$	28,064		$	26,341		$	24,760		$	23,812
Charge offs		1,728			3,643			1,630			1,844			1,808
Recoveries		302			305			347			109			80
Net charge offs		1,426			3,338			1,283			1,735			1,728
Provision for loan losses		1,861			2,567			3,006			3,316			2,676
Balance, end of period	$	27,728		$	27,293		$	28,064		$	26,341		$	24,760
REGULATORY CAPITAL DATA
Tier I capital	$	244,862		$	241,399		$	237,421		$	231,721		$	225,595
Total capital		269,513			266,097			261,521			254,894			248,014
Total risk adjusted assets		1,967,001			1,968,119			1,894,750			1,847,635			1,788,001
COMMON STOCK
Issued		14,658,042			14,658,042			14,658,042			14,658,042			14,658,042
Less treasury shares		(385,632	)		(417,535	)		(433,308	)		(484,774	)		(524,867	)
Outstanding shares		14,272,410			14,240,507			14,224,734			14,173,268			14,133,175
INTANGIBLE ASSET DATA
Goodwill	$	1,213		$	1,213		$	1,098		$	194		$	194
Core deposit intangible		1,531			1,595			1,659			—			—
Mortgage servicing rights		1,413			1,436			1,385			1,351			1,343
Nonmortgage servicing rights		37			38			25			48			53
Total intangible assets	$	4,194		$	4,282		$	4,167		$	1,593		$	1,590
Intangible amortization expense	$	162		$	493		$	331		$	188		$	93

Balance sheet amounts are as of period end unless otherwise noted.