8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC  20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): January19, 2016

SOUTHWEST BANCORP, INC.

(Exact name of registrant as specified in its charter)

Oklahoma	001-34110	73-1136584
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

608 South Main Street, Stillwater, Oklahoma	74074
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (405) 742-1800

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

[X]Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

[   ]Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

[   ]Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

[   ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 2.02. Results of Operations and Financial Condition.

On January19, 2016,  Southwest Bancorp, Inc. (the “Company”) issued a press release reporting its results of operations and its financial condition for the quarter ended December31, 2015.  The text of the press release is included as Exhibit 99.1 to this Current Report on Form 8-K.

Item 8.01.  Other Events.

On Wednesday,  January20, 2016, at 10:00 a.m. Central Time, the Company will host an investor conference call and webcast to review its fourthquarter 2015 financial results. The webcast will include a slide presentation which consists of information regarding the Company's operating and growth strategies and financial performance. The presentation materials will be posted on the Company's website on January20, 2016.The presentation materials are attached hereto as Exhibit 99.2.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits:

99.1:Press Release dated January19,  2016

99.2:Presentation materials

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 hereunto duly authorized.

January19, 2016

SOUTHWEST BANCORP, INC.

By:  /s/ Mark W. Funke
Name:Mark W. Funke
Title:   President and CEO

Exhibit Index

Exhibit No.	Description	Method of Filing
99.1	Press Release dated January19, 2016	Filed herewith electronically
99.2	Presentation materials	Filed herewith electronically

EX-99.1

For additional information:
           Mark W. Funke
           President & CEO
           Joe T. Shockley, Jr.
           EVP & CFO
           (405) 372-2230

For Immediate Release

Southwest Bancorp, Inc. Reports Another Quarter of Solid Results forFourthQuarter 2015

and Announces Increased Quarterly Dividend

January19, 2016, Stillwater, Oklahoma . . . . Southwest Bancorp, Inc. (NASDAQ Global Select Market - OKSB), (“Southwest”), today reported net income for the fourth quarter of 2015  of  $4.6 million, or $0.23 per diluted share, compared to $5.9 million, or $0.30per diluted share, for the fourth quarter of 2014. Included in the prior year’s fourth quarter results was a negative (credit) provision for loan losses of $2.4 million versus a negative (credit) provision of $0.6 million for the quarter ended December 31, 2015. Net income for the year ended December 31, 2015 totaled $17.4 million, or $0.90 per diluted share, compared to $21.0 million, or $1.07 per diluted share, for the year ended December 31, 2014. Included in the prior year’s results wasa pre-tax net gain on sale of bank branches of $4.4 million and a negative (credit) provision for loan losses of $6.6 million, versus a negative (credit) provision for loan losses of $3.6 million for the year ended December 31, 2015.

Southwestannouncedthat its board of directors has approved an increase in the quarterly cash dividend from $0.06 per share to $0.08 per share payableFebruary  12, 2016to shareholders of record as of January29, 2016.

Mark Funke, President and CEO, stated, “The fourth quarter was apositive growth and expansion quarter for Bank SNB.  We successfully completed the acquisition and integration of First Commercial Bancshares, Inc.We hired a market president and two commercial bankers to lead our newly established Denver banking efforts.  The acquisitionexpands our presence in the Oklahoma City metro area with five additional branches, increasing our total to ten. It also adds Colorado to our geographic footprint with three branches in Denver and one in Colorado Springs.

“The financial results for the fourth quarter reflect solid earnings and strong loan growth. Our efforts produced several highlights:

· Closed the acquisition of Edmond-based First Commercial Bancshares, Inc. (“FCBI”) October 9, 2015.

· Total loan growth was $231.3 million, including $194.0 million of FCBI acquired loans, or 15%, for the fourthquarter and$379.4 million, or 27%, for the year.We have had eight consecutive quarters of loan growth.

· Core loan growth (excluding the FCBI acquisition) for the year was $185.4 million, or 13%.

· The quarterly net interest margin improved to 3.48%  atDecember  31, 2015 compared to 3.34% at September 30, 2015. 

“Our financial results and the solid loan growth for the fourth quarter and the full year reflect the excellent work of our banking associates. We will continue to focus our company on producing consistent, conservative, and sustainable earnings through the expansion of our revenue base while prudently managing risk and expenses.”

On February 24, 2015, Southwest’s board of directors authorized its secondconsecutive sharerepurchase program of up to 5.0% of its outstanding common stock, or approximately 950,000 shares,  which became effective on August 14, 2015.The first share repurchase program, in August 2014, authorized up to 990,000 shares. Since August 2014, Southwest has repurchased 1,121,558 shares for a total of $18.8 million.  During the fourth quarter of 2015, 254,248 shares for a total of $4.4 million were repurchased.

Financial Overview

Condition:As of December  31, 2015, total assets were $2.4 billion, an increase of $297.1 million, including FCBI acquired assets,when compared toSeptember 30, 2015.At the date of acquisition, FCBI assets were $291.9 million.As of December  31, 2015, total loans were $1.8 billion, an increaseof $231.3 million from the prior quarter end, including $194.0 million in acquired loans.As of December 31, 2015, investment securitieswere $412.1 million,  an increaseof $23.6 million from the prior quarter end, including $34.8 million in acquired investments.Cash and cash equivalents at December  31, 2015  were $78.1million,  up  $9.5 million from September30, 2015. 

At December  31, 2015, the allowance for loan losses was $26.1 million,a  decrease of  $0.5 million when compared to September 30, 2015 and a decrease of  $2.3 million when compared to December  31, 2014.  The allowance for loan losses to portfolio loans was 1.47%as of December  31, 2015, compared to 1.73% as of September 30, 2015 and 2.03% as of December  31, 2014.  The allowance for loan losses to nonperforming loans was 128.49%  as of December31, 2015, compared to 176.38% as of September 30, 2015 and 302.26% as of December  31, 2014.The total allowance for loan losses combined with the purchase discount on acquired loans represents 1.96% of gross loans.

Nonperforming loans were  $20.3  million at December  31, 2015,  anincrease of $5.2 million from September 30, 2015, including $4.1 million of acquired  nonperforming loans, and an increase of $10.9 millionfrom December  31, 2014.  Other real estate at

December  31, 2015 was $2.3 million, which is flat from September 30, 2015,  anda decrease of $0.8million when compared toDecember  31, 2014.  Nonperforming assets were $22.6 million, or 1.27% of portfolio loans and other real estate, as of December  31, 2015, compared to $17.4 million, or 1.12% of portfolio loans and other real estate, as of September 30, 2015, and $12.5 million, or 0.89% of portfolio loans and other real estate, as of December  31, 2014.  

As of December 31, 2015, total deposits were $1.9 billion, an increase of $257.9 million, including $227.9 million of acquired deposits,when compared toSeptember  30, 2015.Total core funding, which includes all non-brokered deposits and sweep repurchase agreements, comprised88%and 89% of total funding as of December  31, 2015 and September 30, 2015, respectively.  Wholesale funding, including Federal Home Loan Bank borrowings, federal funds purchased, and brokered deposits, accounted for 12%  and 11%  of total funding at December  31, 2015 and September 30, 2015, respectively.  See Table 7  for details on core funding and non-brokered deposits, which are non-GAAP financial measures.

The capital ratios of Southwest and Bank SNB as of December  31, 2015 exceeded the criteria for regulatory classification as “well-capitalized”.  Southwest’s total regulatory capital was $354.3 million, for a total risk-based capital ratio of 16.55%,Common Equity Tier 1 capital was $282.7 million, for a Common Equity Tier 1 ratio of 13.21%, and Tier 1 capital was $327.5million, for a Tier 1 risk-based capital ratio of  15.30%.  Bank SNB had total regulatory capital of  $317.9  million, for a total risk-based capital ratio of 14.90% and Common Equity Tier 1 and Tier 1 capital of $291.1 million, for a Common Equity Tier 1 and Tier 1 ratio of 13.65%.  Designation as a well-capitalized institution under regulations does not constitute a recommendation or endorsement by bank regulators.

FourthQuarter Results:

Summary:  For the fourthquarter of 2015, net income was $4.6 million, compared to $4.1 million for the third quarter of 2015 and $5.9 million for the fourthquarter of 2014.  For the quarter, FCBI contributed $1.1 million of net income, which was substantially offset by deal costs, net of tax, of $1.0 million.

The $0.5 million increase in net income compared to the third quarter of 2015was primarily due to $3.0 million increase in net interest income, a negative provision for loan losses of $0.6 million versusa small loan provision for loan losses in the previous quarter,and a $0.2 million increase in noninterest income, offset in part by a $3.0 million increase in noninterest expense including FCBI acquisition expenses, and an increase in taxes of $0.3 million.

The $1.3 million decrease in our net income compared to the fourth quarter of 2014 was primarily the result of a decrease in the negative provision for loan losses of $1.8 million,a $0.4 million decrease in noninterest income, a

$3.0 million increase in noninterest expense, offset in part by a $2.9 million increase in net interest income and a $1.0 million decrease in taxes.

Net Interest Income:Net interest income totaled $19.5million forthe fourthquarter of 2015, compared to $16.5 million for the third quarter of 2015 and$16.6 million for the fourth quarter of 2014.Net interest margin was 3.48% for the fourthquarter of 2015, compared to 3.34% for the third quarter of 2015 and 3.52% for the fourth quarter of 2014.Included in interest income forthe fourth quarter of 2015 was $0.3 million due to accelerated discount accretion attributable to the acquisition of FCBI.  The net effect of these adjustments on the net interest margin was a 5 basis point increase for the quarter ended 2015.The FCBI acquisition contributed $2.7 million in net interest income including $0.3 million in accelerated discount accretion. Loans (including loans held for sale) for the fourth quarter of 2015 increased $231.3 million, or 15%, including $194.0 million of acquired loans,  when compared to September  30, 2015, and $379.4 million, or 27%, when compared to December  31, 2014.

Provision (Credit) for Loan Losses and Net Charge-offs:  The provision for loan losses is the amount that is required to maintain the allowance for loan losses at an appropriate level based upon the inherent risks in the loan portfolio after the effects of net charge-offs or net recoveries for the period.  The provision for loan losses was a negative provision of $0.6 million for the fourthquarter of 2015, compared to a provision of $0.02 million for the third quarter of 2015, and a  negative provision of $2.4 million for the fourth quarter of 2014.  During the fourthquarter of 2015,  netrecoveries totaled  $0.1 million, or (0.02%)  (annualized) of average portfolio loans, compared to net recoveries of $0.4 million, or (0.09%) (annualized) of average portfolio loans for the third quarter of 2015 and net charge-offsof $0.1 million, or 0.02% (annualized) of average portfolio loans for the fourth quarter of 2014.

Noninterest Income:  Noninterest income totaled $4.2  million for the fourthquarter of 2015, compared to $4.0 million for the third quarter of 2015 and $4.6 million forthe fourth quarter of 2014.

The $0.2 million increase  from the third  quarter of 2015is primarily the result ofa $0.2 million increase in service charges and fees and a $0.1 million increase in the gain on sale of mortgage loans, offset in part by a$0.1  million decrease in other noninterest income,primarily from customer risk management interest rate swap income.

The $0.4 million decrease from the fourth quarter of 2014 is primarily the result of a $1.1 million decrease in gain on investment securities related to the gain on sale of a private equity investment during the fourth quarter of 2014, offset in part by a $0.1 million increase in service charges and fees,a  $0.2 million increase in the gain on sale of mortgage loans, anda$0.4 million increase in other noninterest income, primarily from customer risk management interest rate swap income and income on bank owned life insurance.

Noninterest Expense:Noninterest expense totaled $17.1million for the fourthquarter of 2015, compared to $14.1 million for the third quarter of 2015 and the fourth quarter of 2014. 

The $3.0 million increase in noninterest expense from the third quarter of 2015 was primarily due to a  $1.9 million increase in personnel expense,  a $0.3 million increase in occupancy, a $0.4 million increase in data processing, anda  $0.4 million increase in general and administrative expense. Noninterest expense included $2.6 million of expenses related to the acquisition of FCBI and the associated deal costs.

The $3.0 million increase in  noninterest expense from the fourth quarter of 2014 consisted of a$2.8 million increase in personnel expense,a $0.2 million increase in occupancy, a $0.4 million increase in data processing, and a $0.1 million increase in FDIC and other insurance, offset in part by a $0.2 million decrease in other real estate and a $0.4 million decrease in general and administrative expense, which includes primarilylegal, accounting, and marketing expenses.Noninterest expense included $2.6 million of expenses related to the acquisition of FCBI and the associated deal costs.

Income Tax:  Income tax expense totaled $2.6  million for the fourthquarter of 2015, compared to  $2.3 million for the third quarter of 2015 and$3.5 million for the fourth quarter of 2014.  The income tax expense fluctuates in relation to pre-tax income levels.  The fourthquarter of 2015 effective tax rate was 35.96%,  compared to 35.84% for the third quarter of 2015 and 37.50% for the fourth quarter of 2014. The decline in the effective tax rate includes the impact of an increase in tax exempt income, as a percentage of pre-tax income.

Year-to-date Results:

Summary:  Net income was $17.4 million for the year ended December 31, 2015, compared to $21.0 million for the year ended December 31, 2014.  The $3.6 million decrease in net income from 2014 is the result ofa  $3.1

million decrease in the negative provision for loan losses, a $4.5 million decrease in noninterest income, which is primarily the pre-tax net gain of $4.4 million on the sales of community bank branches in the second quarter of 2014, and a $1.3 million increase in noninterest expense, offset in part by a  $2.4 million increase in net interest incomeand a $2.8 million decrease in income tax.For the year, FCBI contributed $1.1 million of net income, which was offset by,net of tax,deal costs of $1.2 million.

Net Interest Income:Net interest income totaled $67.4 million for 2015, compared to $65.0 million for 2014, anincrease of $2.4 million.  Year-to-date net interest margin was 3.35%, compared to 3.45% for 2014.Included in interest income for 2015 was $0.3 million due to accelerated discount accretion attributable to the acquisition of FCBI.  The net effect of these adjustments on the net interest margin was a 2 basis point increase for the year ended 2015.Included in interest income for 2014 was $0.8 million due to accelerated discount accretion attributable to the sale of loans covered by a loss share agreement and $0.8 million due to the interest recovery on nonaccrual loans.  The net effect of these adjustments on the net interest margin was a8 basis point increase for the year ended2014.  With the rate environment remaining low, earning assets are repricing at lower rates.

Provision (Credit) for Loan Losses and Net Charge-offs:  The provision for loan losses is the amount of expense that is required to maintain the allowance for loan losses at an appropriate level based upon the inherent risks in the loan portfolio after the effects of net charge-offs or net recoveries for the period.  The provision for loan losses was a credit (or negative) of $3.6 million for 2015, compared to a negative provision of $6.6 million for 2014. Net recoveries totaled $1.2 million, or (0.08%) (annualized) of average portfolio loans year-to-date as of 2015, compared to net charge-offs of  $1.6 million, or 0.12% (annualized) of average portfolio loans for 2014.

Noninterest Income:  Noninterest income totaled $14.5 million for 2015, compared to $18.9 million for 2014.  The decrease consists ofa $0.2 million decrease in service charges and fees,  the $4.4 million recognized as the pre-tax net gain on the sales of the community bank branches in the second quarter of 2014,and a  $1.7 million decrease in the gain on sale of investment securities, due to thegain on sale of a private equity investment and the gain on the sale of a stock investment that was acquired in a prior year repossession in 2014,  offset in part by a$0.6 million increase in gain on sales of mortgage loans and a $1.2 million increase in other noninterest income, which includes customer risk management interest rate swap income and income on bank owned life insurance.

Noninterest Expense:Noninterest expense totaled $58.2million for 2015, compared to $56.9 million for 2014.  The increase consists of a$3.0 million increase in salaries and employee benefits, a $0.2 million increase in occupancy expense, and a$0.4 million increase in data processing. These increases areoffset in part by  a $0.4 million decrease in other real estate expense and a  $1.9 million decrease in general and administrative expenses, which primarily includes legal, marketing,and consulting. Noninterest expense included $3.1 million of expenses related to the acquisition of FCBI and the associated deal costs.

Income Tax:  Income tax expense totaled $9.8 million for 2015, compared to $12.6 million for 2014.  The income tax expense fluctuates in relation to pre-tax income levels.  The year-to-date effective tax rate was 36.00% as of December  31, 2015, compared to 37.50% as of December  31, 2014.The decline in the effective tax rate includes the impact of an increase in tax exempt income, as a percentage of pre-tax income.

Conference Call

Southwest will host a conference call to review these results on Wednesday, January  20, 2016 at 11:00 a.m. Eastern Time (10:00 a.m. Central Time).  Investors, news media, and others may pre-register for the call using the following link to receive a special dial-in number and PIN:  http://dpregister.com/10077971.  Telephone participants who are unable to pre-register may access the call by telephone at 866-218-2402 (toll-free) or 412-902-4190 (international).  Participants are encouraged to dial into the call approximately 10 minutes prior to the start time.  The call and corresponding presentation slides will be webcast live on Southwest’s website at www.oksb.com or http://services.choruscall.com/links/oksb160120.html.  An audio replay will be available one hour after the call at 877-344-7529 (toll-free) or 412-317-0088 (international),  conference number 10077971.  Telephone replay access will be available until 9:00 a.m. Eastern Time on February20, 2016.

Southwest Bancorp and Subsidiaries

Southwest is the holding company for Bank SNB, an Oklahoma state banking corporation(“Bank SNB”). Bank SNB offers commercial and consumer lending, deposit and investment services, specialized cash management, and other financial services from offices in Oklahoma, Texas, Kansas, and Colorado.  Bank SNB was chartered in 1894 and Southwest was organized in 1981 as the holding company.  At December31, 2015,  Southwest had total assets of approximately  $2.4  billion, deposits of $1.9  billion, and shareholders’ equity of $296.1 million.

Southwest’s area of expertise focuses on the special financial needs of healthcare and health professionals, businesses and their managers and owners, commercial lending, energy banking, and commercial real estate borrowers.  The strategic focus on healthcare lending was established in 1974.  Southwest and its banking subsidiaryprovide credit and other remittance services, such as deposits, cash management, and document imaging for physicians and other healthcare practitioners to start or develop their practices and finance the development and purchase of medical offices, clinics, surgical care centers, hospitals, and similar facilities.  As of December  31, 2015, approximately $425.7 million, or 24%,  of loans were loans to individuals and businesses in the healthcare industry.  Regular market reviews are conducted of (i) current and potential healthcare lending business,and (ii) the appropriate concentrations within healthcare based upon economic and regulatory conditions.

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

Caution About Forward-Looking Statements

Southwest makes forward-looking statements in this news release that are subject to risks and uncertainties.  These statements are intended to be covered by the safe harbor provision for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995.

These forward-looking statements include: 

· Statements of Southwest's goals, intentions, and expectations;

· Estimates of risks and of future costs and benefits;

· Expectations regarding Southwest’s future financial performance and the financial performance of its operating segments;

· Expectations regarding regulatory actions;

· Expectations regarding Southwest’s ability to utilize tax loss benefits;

· Expectations regarding Southwest’s stock repurchase program;

· Expectations regarding dividends;

· Expectations regarding acquisitions and divestitures;

· Assessments of loan quality, probable loan losses, and the amount and timing of loan payoffs;

· Estimates of the value of assets held for sale or available for sale; 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: the amount and timing of future changes in interest rates, market behavior, and other economic conditions; future laws, regulations, and accounting principles; changes in regulatory standards and examination policies, and a variety of other matters. These other matters include, among other things, the direct and indirect effects of economic conditions on interest rates, credit quality, loan demand, liquidity, and monetary and supervisory policies of banking regulators.  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 future results.  For other factors, risks, and uncertainties that could cause actual results to differ materially from estimates and projections contained in forward-looking statements, please read Southwest’s reports filed with the Securities and Exchange Commission, including its Annual Report on Form 10-K for the year ended December 31, 2014.  You are urged to carefully review and consider the cautionary statements and other disclosures made in those filings, specifically those under the heading “Risk Factors”.

The cautionary statements in this release also identify important factors and possible events that involve risk and uncertainties that could cause actual results to differ materially from those contained in the forward-looking statements.  These forward-looking statements speak only as of the date on which the statements were made.  Southwest does not intend, and undertakes no obligation, to update or revise any forward-looking statements contained in this release, whether as a result of differences in actual results, changes in assumptions, or changes in other factors affecting such statements, except as required by law.

Southwest is required under generally accepted accounting principles to evaluate subsequent events and their impact, if any, on its financial statements as of December 31, 2015 through the date its financial statements are filed with the Securities and Exchange Commission.  The December31,  2015 financial statements included in this release will be adjusted if necessary to properly reflect the impact of subsequent events on estimates used to prepare those statements. 

The Southwest Bancorp, Inc. logo is available at

http://www.globenewswire.com/newsroom/prs/?pkgid=8074

The Bank SNB logo is available at

http://www.globenewswire.com/newsroom/prs/?pkgid=23106

Financial Tables

Unaudited Financial Highlights	Table 1
Unaudited Consolidated Statements of Financial Condition	Table 2
Unaudited Consolidated Statements of Operations	Table 3
Unaudited Average Balances, Yields, and Rates-Quarterly	Table 4
Unaudited Average Balances, Yields, and Rates-Year-to-date	Table 5
Unaudited Quarterly Summary Loan Data	Table 6
Unaudited Quarterly Summary Financial Data	Table 7
Unaudited Quarterly Supplemental Analytical Data	Table 8

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

	Fourth Quarter		Third Quarter			Fourth Quarter
QUARTERLY HIGHLIGHTS	2015				% Change	2014		% Change
Operations
Net interest income	$	19,520	$	16,496	18%	$	16,592	18%
Provision (credit) for loan losses		(566)		23	(2,561)		(2,386)	(76)
Noninterest income		4,179		4,029	4		4,576	(9)
Noninterest expense		17,099		14,077	21		14,115	21
Income before taxes		7,166		6,425	12		9,439	(24)
Taxes on income		2,577		2,303	12		3,540	(27)
Net income		4,589		4,122	11		5,899	(22)
Diluted earnings per share		0.23		0.22	5		0.30	(23)
Balance Sheet
Total assets		2,357,022		2,059,899	14		1,942,034	21
Loans held for sale		7,453		7,024	6		1,485	402
Portfolio loans		1,771,976		1,541,070	15		1,398,506	27
Total deposits		1,884,105		1,626,250	16		1,533,999	23
Total shareholders' equity		296,098		277,344	7		270,786	9
Book value per common share		14.80		14.57	2		14.11	5
Key Ratios
Net interest margin		3.48%		3.34%			3.52%
Efficiency ratio		71.49		68.25			66.68
Total capital to risk-weighted assets		16.55		18.21			20.96
Nonperforming loans to portfolio loans		1.15		0.98			0.67
Shareholders' equity to total assets		12.56		13.46			13.94
Tangible common equity to tangible assets*		11.95		13.40			13.89
Return on average assets (annualized)		0.78		0.81			1.22
Return on average common equity (annualized)		6.14		5.94			8.62
Return on average tangible common equity (annualized)**		6.46		5.97			8.66
	Year
YEAR-TO-DATE  HIGHLIGHTS	2015		2014		% Change
Operations
Net interest income	$	67,417	$	65,004	4%
Provision (credit) for loan losses		(3,566)		(6,624)	(46)
Noninterest income		14,457		18,931	(24)
Noninterest expense		58,240		56,912	2
Income before taxes		27,200		33,647	(19)
Taxes on income		9,793		12,617	(22)
Net income		17,407		21,030	(17)
Net income available to common shareholders		17,407		21,030	(17)
Diluted earnings per share		0.90		1.07	(16)
Balance Sheet
Total assets		2,357,022		1,942,034	21
Loans held for sale		7,453		1,485	402
Portfolio loans		1,771,976		1,398,506	27
Total deposits		1,884,105		1,533,999	23
Total shareholders' equity		296,098		270,786	9
Book value per common share		14.80		14.11	5
Key Ratios
Net interest margin		3.35%		3.45%
Efficiency ratio		70.67		67.80
Total capital to risk-weighted assets		16.55		20.96
Nonperforming loans to portfolio loans		1.15		0.67
Shareholders' equity to total assets		12.56		13.94
Tangible common equity to tangible assets*		11.95		13.89
Return on average assets (annualized)		0.84		1.09
Return on average common equity (annualized)		6.23		7.82
Return on average tangible common equity (annualized)**		6.35		7.85

Balance sheet amounts and ratios are as of period end unless otherwise noted.
* This is a Non-GAAP financial measure.  Please see Table 8 for a reconciliation to the most directly comparable GAAP based measure.
** This is a Non-GAAP financial measure.
Please see accompanying tables for additional financial information.

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

	December 31,		December 31,
	2015		2014
Assets
Cash and due from banks	$	24,971	$	19,705
Interest-bearing deposits		53,158		121,231
Cash and cash equivalents		78,129		140,936
Securities held to maturity (fair values of $12,282 and $12,880, respectively)		11,797		12,362
Securities available for sale (amortized cost of $401,136 and $352,275, respectively)		400,331		353,231
Loans held for sale		7,453		1,485
Loans receivable		1,771,976		1,398,506
Less: Allowance for loan losses		(26,106)		(28,452)
Net loans receivable		1,745,870		1,370,054
Accrued interest receivable		5,767		4,723
Non-hedge derivative asset		1,793		787
Premises and equipment, net		23,819		18,588
Other real estate		2,274		3,097
Goodwill		13,467		1,214
Other intangible assets, net		6,615		3,927
Other assets		59,707		31,630
Total assets	$	2,357,022	$	1,942,034
Liabilities
Deposits:
Noninterest-bearing demand	$	596,494	$	496,128
Interest-bearing demand		151,015		122,342
Money market accounts		534,357		461,679
Savings accounts		56,333		32,795
Time deposits of $100,000 or more		311,538		198,952
Other time deposits		234,368		222,103
Total deposits		1,884,105		1,533,999
Accrued interest payable		867		769
Non-hedge derivative liability		1,793		787
Other liabilities		11,684		9,920
Other borrowings		110,927		79,380
Subordinated debentures		51,548		46,393
Total liabilities		2,060,924		1,671,248
Shareholders' equity
Common stock - $1 par value; 40,000,000 shares authorized;
21,138,028 and 19,810,877 shares issued, respectively		21,138		19,811
Additional paid-in capital		121,966		101,245
Retained earnings		173,210		160,427
Accumulated other comprehensive income (loss)		(1,290)		(395)
Treasury stock, at cost, 1,131,226 and 617,818 shares, respectively		(18,926)		(10,302)
Total shareholders' equity		296,098		270,786
Total liabilities and shareholders' equity	$	2,357,022	$	1,942,034

SOUTHWEST BANCORP, INC.
UNAUDITED CONSOLIDATED STATEMENTS OFOPERATIONS
(Dollars in thousands) Table 3

	For the three months ended						For the year
	December 31,		September 30,		December 31,		ended December 31,
	2015		2015		2014		2015		2014
Interest income
Loans	$	19,725	$	16,510	$	16,423	$	67,644	$	64,224
Investment securities		1,813		1,644		1,737		6,559		7,146
Other interest-earning assets		46		66		56		280		422
Total interest income		21,584		18,220		18,216		74,483		71,792
Interest expense
Interest-bearing deposits		1,196		905		835		3,798		3,655
Other borrowings		261		255		225		984		900
Subordinated debentures		607		564		564		2,284		2,233
Total interest expense		2,064		1,724		1,624		7,066		6,788
Net interest income		19,520		16,496		16,592		67,417		65,004
Provision (credit) for loan losses		(566)		23		(2,386)		(3,566)		(6,624)
Net interest income after provision for loan losses		20,086		16,473		18,978		70,983		71,628
Noninterest income
Service charges and fees		2,676		2,441		2,526		9,995		10,222
Gain on sale of branches, net		-		-		-		-		4,378
Gain on sales of mortgage loans		645		565		480		2,179		1,549
Gain on sale/call of investment securities, net		-		19		1,120		162		1,884
Other noninterest income		858		1,004		450		2,121		898
Total noninterest income		4,179		4,029		4,576		14,457		18,931
Noninterest expense
Salaries and employee benefits		10,273		8,374		7,428		34,850		31,830
Occupancy		2,586		2,288		2,388		9,359		9,193
Data processing		847		475		417		2,178		1,776
FDIC and other insurance		384		341		295		1,353		1,305
Other real estate, net		8		20		235		161		594
General and administrative		3,001		2,579		3,352		10,339		12,214
Total noninterest expense		17,099		14,077		14,115		58,240		56,912
Income before taxes		7,166		6,425		9,439		27,200		33,647
Taxes on income		2,577		2,303		3,540		9,793		12,617
Net income	$	4,589	$	4,122	$	5,899	$	17,407	$	21,030
Basic earnings per common share	$	0.23	$	0.22	$	0.30	$	0.90	$	1.07
Diluted earnings per common share		0.23		0.22		0.30		0.90		1.07
Common dividends declared per share		0.06		0.06		0.04		0.24		0.16

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

	For the three months ended
	December 31, 2015			September 30, 2015			December 31, 2014
	Average		Average	Average		Average	Average		Average
	Balance		Yield/Rate	Balance		Yield/Rate	Balance		Yield/Rate
Assets
Loans	$	1,744,374	4.49%	$	1,473,297	4.45%	$	1,369,852	4.76%
Investment securities		413,701	1.74		387,194	1.68		367,978	1.87
Other interest-earning assets		64,562	0.28		100,011	0.26		132,418	0.17
Total interest-earning assets		2,222,637	3.85		1,960,502	3.69		1,870,248	3.86
Other assets		101,003			65,459			44,268
Total assets	$	2,323,640		$	2,025,961		$	1,914,516
Liabilities and Shareholders' Equity
Interest-bearing demand deposits	$	137,154	0.15%	$	123,829	0.12%	$	114,035	0.11%
Money market accounts		541,976	0.18		497,935	0.17		466,937	0.15
Savings accounts		53,603	0.13		35,982	0.10		32,824	0.10
Time deposits		548,145	0.63		446,464	0.57		427,582	0.57
Total interest-bearing deposits		1,280,878	0.37		1,104,210	0.33		1,041,378	0.32
Other borrowings		80,343	1.29		76,799	1.32		79,932	1.12
Subordinated debentures		51,044	4.76		46,393	4.86		46,393	4.86
Total interest-bearing liabilities		1,412,265	0.58		1,227,402	0.56		1,167,703	0.55
Noninterest-bearing demand deposits		594,537			511,442			465,466
Other liabilities		20,149			11,708			9,765
Shareholders' equity		296,689			275,409			271,582
Total liabilities and shareholders' equity	$	2,323,640		$	2,025,961		$	1,914,516
Net interest income and spread			3.27%			3.13%			3.31%
Net interest margin (1)			3.48%			3.34%			3.52%
Average interest-earning assets
to average interest-bearing liabilities		157.38%			159.73%			160.16%
(1) Net interest margin = annualized net interest income / average interest-earning assets

SOUTHWEST BANCORP, INC.Table 5
UNAUDITED AVERAGE BALANCES, YIELDS, AND RATES – YEAR-TO-DATE
(Dollars in thousands)

	For the year ended December 31,
	2015			2014
	Average		Average	Average		Average
	Balance		Yield/Rate	Balance		Yield/Rate
Assets
Loans	$	1,519,730	4.45%	$	1,334,323	4.81%
Investment securities		384,745	1.70		379,924	1.88
Other interest-earning assets		106,587	0.26		170,563	0.25
Total interest-earning assets		2,011,062	3.70		1,884,810	3.81
Other assets		68,680			46,894
Total assets	$	2,079,742		$	1,931,704
Liabilities and Shareholders' Equity
Interest-bearing demand deposits	$	134,381	0.11%	$	121,976	0.12%
Money market accounts		499,788	0.17		440,658	0.14
Savings accounts		39,456	0.11		38,147	0.10
Time deposits		469,547	0.59		472,820	0.60
Total interest-bearing deposits		1,143,172	0.33		1,073,601	0.34
Other borrowings		72,538	1.36		82,965	1.08
Subordinated debentures		47,565	4.80		46,393	4.81
Total interest-bearing liabilities		1,263,275	0.56		1,202,959	0.56
Noninterest-bearing demand deposits		524,025			449,052
Other liabilities		13,217			10,612
Shareholders' equity		279,225			269,081
Total liabilities and shareholders' equity	$	2,079,742		$	1,931,704
Net interest income and spread			3.14%			3.25%
Net interest margin (1)			3.35%			3.45%
Average interest-earning assets
to average interest-bearing liabilities		159.19%			156.68%
(1) Net interest margin = annualized net interest income / average interest-earning assets

SOUTHWEST BANCORP, INC.
UNAUDITED QUARTERLY SUMMARY LOAN DATA
(Dollars in thousands) Table 6

			2015						2014
		Dec. 31		Sep. 30	Jun. 30		Mar. 31		Dec. 31		Sep. 30		Jun. 30		Mar. 31
LOAN COMPOSITION
Real estate mortgage:
Commercial	$	938,462	$	869,250	$	759,406	$	759,676	$	752,971	$	757,878	$	769,021	$	766,178
One-to-four family residential		161,958		95,906		85,338		86,343		77,531		78,985		79,542		84,619
Real estate construction:
Commercial		129,070		126,407		186,140		192,052		186,659		166,379		166,981		166,007
One-to-four family residential		21,337		12,866		13,107		12,586		10,464		11,030		8,359		6,629
Commercial		507,173		423,480		384,788		366,282		350,410		330,738		300,163		266,311
Installment and consumer:
Guaranteed student loans		-		-		-		-		37		127		4,282		4,318
Other		21,429		20,185		20,651		21,306		21,919		22,251		23,352		26,060
Total loans, including held for sale		1,779,429		1,548,094		1,449,430		1,438,245		1,399,991		1,367,388		1,351,700		1,320,122
Less allowance for loan losses		(26,106)		(26,593)		(26,219)		(27,250)		(28,452)		(30,917)		(33,083)		(34,925)
Total loans, net	$	1,753,323	$	1,521,501	$	1,423,211	$	1,410,995	$	1,371,539	$	1,336,471	$	1,318,617	$	1,285,197
LOANS BY SEGMENT
Oklahoma banking****	$	1,048,473	$	832,282	$	810,367	$	814,949	$	793,268	$	800,201	$	798,067	$	777,384
Texas banking		580,476		563,010		493,047		478,005		460,680		424,640		408,385		372,018
Kansas banking		150,480		152,802		146,016		145,291		146,043		142,547		145,248		170,720
Total loans	$	1,779,429	$	1,548,094	$	1,449,430	$	1,438,245	$	1,399,991	$	1,367,388	$	1,351,700	$	1,320,122
NONPERFORMING LOANS BY TYPE
Construction & development	$	1,010	$	391	$	416	$	392	$	73	$	77	$	82	$	80
Commercial real estate		3,992		1,795		2,141		2,247		2,195		7,504		7,613		7,541
Commercial		13,491		11,727		5,114		5,447		6,044		6,149		7,484		7,992
One-to-four family residential		1,777		1,016		1,216		1,065		1,100		1,274		1,180		470
Consumer		88		148		-		-		1		55		119		2
Total nonperforming loans	$	20,358	$	15,077	$	8,887	$	9,151	$	9,413	$	15,059	$	16,478	$	16,085
NONPERFORMING LOANS BY SEGMENT
Oklahoma banking****	$	6,948	$	2,846	$	1,670	$	2,244	$	1,867	$	6,410	$	7,149	$	7,056
Texas banking		12,450		11,025		5,353		5,264		5,699		5,777		5,636		5,793
Kansas banking		960		1,206		1,864		1,643		1,847		2,872		3,693		3,236
Total nonperforming loans	$	20,358	$	15,077	$	8,887	$	9,151	$	9,413	$	15,059	$	16,478	$	16,085
OTHER REAL ESTATE BY TYPE
Construction & development	$	2,060	$	2,025	$	2,035	$	2,035	$	2,035	$	2,130	$	2,130	$	2,130
Commercial real estate		214		249		358		220		1,062		1,318		2,155		2,524
Total other real estate	$	2,274	$	2,274	$	2,393	$	2,255	$	3,097	$	3,448	$	4,285	$	4,654
OTHER REAL ESTATE BY SEGMENT
Oklahoma banking****	$	274	$	200	$	200	$	-	$	-	$	-	$	-	$	-
Texas banking		2,000		2,025		2,000		2,000		2,000		2,000		2,000		2,000
Kansas banking		-		49		193		255		1,097		1,448		2,285		2,654
Total other real estate	$	2,274	$	2,274	$	2,393	$	2,255	$	3,097	$	3,448	$	4,285	$	4,654
****Due to immateriality, Colorado banking is included within Oklahoma banking.
Continued

SOUTHWEST BANCORP, INC.
UNAUDITED QUARTERLY SUMMARY LOAN DATA
(Dollars in thousands) Table 6
Continued

			2015						2014
		Dec. 31		Sep. 30	Jun. 30		Mar. 31		Dec. 31		Sep. 30		Jun. 30		Mar. 31
POTENTIAL PROBLEM LOANS BY TYPE
Construction & development	$	-	$	-	$	-	$	201	$	2,004	$	19,307	$	18,842	$	22,220
Commercial real estate		26,981		22,362		20,375		24,672		26,108		40,623		60,559		64,257
Commercial		9,879		7,366		14,519		14,016		5,842		4,090		4,299		4,807
One-to-four family residential		2,285		79		80		81		83		355		475		481
Consumer		10		-		-		-		-		-		-		-
Total potential problem loans	$	39,155	$	29,807	$	34,974	$	38,970	$	34,037	$	64,375	$	84,175	$	91,765
POTENTIAL PROBLEM LOANS BY SEGMENT
Oklahoma banking****	$	32,970	$	23,597	$	23,231	$	26,713	$	24,950	$	23,895	$	23,887	$	29,208
Texas banking		4,165		4,086		9,180		9,541		6,283		38,586		57,044		58,361
Kansas banking		2,020		2,124		2,563		2,716		2,804		1,894		3,244		4,196
Total potential problem loans	$	39,155	$	29,807	$	34,974	$	38,970	$	34,037	$	64,375	$	84,175	$	91,765
ALLOWANCE ACTIVITY
Balance, beginning of period	$	26,593	$	26,219	$	27,250	$	28,452	$	30,917	$	33,083	$	34,925	$	36,663
Charge offs		569		226		325		230		377		1,156		1,991		3,392
Recoveries		648		577		430		915		298		1,887		504		2,640
Net charge offs (recoveries)		(79)		(351)		(105)		(685)		79		(731)		1,487		752
Provision (credit) for loan losses		(566)		23		(1,136)		(1,887)		(2,386)		(2,897)		(355)		(986)
Balance, end of period	$	26,106	$	26,593	$	26,219	$	27,250	$	28,452	$	30,917	$	33,083	$	34,925
NET CHARGE OFFS BY TYPE
Construction & development	$	-	$	(16)	$	(15)	$	5	$	-	$	-	$	-	$	655
Commercial real estate		219		24		82		(118)		(34)		(640)		583		(2,243)
Commercial		(286)		(325)		(52)		(188)		(45)		22		652		2,267
One-to-four family residential		(48)		(68)		(91)		(331)		84		11		(2)		(18)
Consumer		36		34		(29)		(53)		74		(124)		254		91
Total net charge offs (recoveries) by type	$	(79)	$	(351)	$	(105)	$	(685)	$	79	$	(731)	$	1,487	$	752
NET CHARGE OFFS BY SEGMENT
Oklahoma banking****	$	288	$	(86)	$	25	$	(309)	$	248	$	67	$	763	$	229
Texas banking		(415)		(103)		(72)		(114)		(36)		(611)		244		(1,586)
Kansas banking		48		(162)		(58)		(262)		(133)		(187)		480		2,109
Total net charge offs (recoveries) by segment	$	(79)	$	(351)	$	(105)	$	(685)	$	79	$	(731)	$	1,487	$	752
****Due to immateriality, Colorado banking is included within Oklahoma banking.

SOUTHWEST BANCORP, INC.
UNAUDITED QUARTERLY SUMMARY FINANCIAL DATA
(Dollars in thousands, except per share) Table 7

			2015						2014
		Dec. 31		Sep. 30	Jun. 30		Mar. 31		Dec. 31		Sep. 30		Jun. 30		Mar. 31
PER SHARE DATA
Basic earnings per common share	$	0.23	$	0.22	$	0.22	$	0.24	$	0.30	$	0.27	$	0.31	$	0.19
Diluted earnings per common share		0.23		0.22		0.22		0.24		0.30		0.27		0.31		0.19
Common dividends declared per share		0.06		0.06		0.06		0.06		0.04		0.04		0.04		0.04
Book value per common share		14.80		14.57		14.38		14.26		14.11		13.90		13.71		13.37
Tangible book value per share*		13.98		14.49		14.29		14.17		14.02		13.80		13.61		13.21
COMMON STOCK
Shares issued		21,138,028		19,901,336		19,900,855		19,900,350		19,810,877		19,793,623		19,793,123		19,786,206
Less treasury shares		1,131,226		868,617		867,310		867,310		617,818		223,005		-		-
Outstanding shares		20,006,802		19,032,719		19,033,545		19,033,040		19,193,059		19,570,618		19,793,123		19,786,206
OTHER FINANCIAL DATA
Investment securities	$	412,128	$	388,543	$	373,260	$	377,545	$	365,593	$	370,607	$	385,873	$	386,987
Loans held for sale		7,453		7,024		6,687		9,106		1,485		4,368		6,803		5,741
Portfolio loans		1,771,976		1,541,070		1,442,743		1,429,139		1,398,506		1,363,020		1,344,897		1,314,381
Total loans		1,779,429		1,548,094		1,449,430		1,438,245		1,399,991		1,367,388		1,351,700		1,320,122
Total assets		2,357,022		2,059,899		2,031,581		2,003,079		1,942,034		1,900,948		1,885,158		2,012,053
Total deposits		1,884,105		1,626,250		1,624,446		1,616,454		1,533,999		1,494,946		1,463,855		1,605,906
Other borrowings		110,927		96,801		75,839		58,578		79,380		75,884		90,760		85,692
Subordinated debentures		51,548		46,393		46,393		46,393		46,393		46,393		46,393		46,393
Total shareholders' equity		296,098		277,344		273,681		271,444		270,786		271,966		271,351		264,586
Mortgage servicing portfolio		432,318		422,845		415,961		407,903		410,315		401,756		397,339		391,303
INTANGIBLE ASSET DATA
Goodwill	$	13,467	$	1,214	$	1,214	$	1,214	$	1,214	$	1,214	$	1,214	$	1,214
Core deposit intangible		2,894		342		405		467		530		597		667		1,925
Mortgage servicing rights		3,721		3,631		3,518		3,399		3,397		3,269		3,182		3,006
Total intangible assets	$	20,082	$	5,187	$	5,137	$	5,080	$	5,141	$	5,080	$	5,063	$	6,145
Intangible amortization expense	$	330	$	243	$	243	$	168	$	193	$	195	$	210	$	183
DEPOSIT COMPOSITION
Non-interest bearing demand	$	596,494	$	526,159	$	515,156	$	506,952	$	496,128	$	445,148	$	427,431	$	471,568
Interest-bearing demand		151,015		114,877		131,547		140,659		122,342		104,807		124,712		132,622
Money market accounts		534,357		502,028		496,178		488,569		461,679		477,614		430,296		440,875
Savings accounts		56,333		36,163		35,647		34,413		32,795		33,398		31,187		47,532
Time deposits of $100,000 or more		311,538		238,318		233,105		227,426		198,952		203,090		209,059		236,035
Other time deposits		234,368		208,705		212,813		218,435		222,103		230,889		241,170		277,274
Total deposits**	$	1,884,105	$	1,626,250	$	1,624,446	$	1,616,454	$	1,533,999	$	1,494,946	$	1,463,855	$	1,605,906
OFFICES AND EMPLOYEES
FTE Employees		412		358		361		360		359		351		364		397
Branches		32		23		23		22		21		21		21		24
Assets per employee	$	5,721	$	5,754	$	5,628	$	5,564	$	5,410	$	5,416	$	5,179	$	5,068
____________________
*This is a Non-GAAP based financial measure.
**Calculation of Non-brokered Deposits and Core Funding (Non-GAAP Financial Measures)
Total deposits	$	1,884,105	$	1,626,250	$	1,624,446	$	1,616,454	$	1,533,999	$	1,494,946	$	1,463,855	$	1,605,906
Less:
Brokered time deposits		39,797		10,086		7,683		7,694		3,373		2,952		1,348		1,347
Other brokered deposits		135,880		133,025		103,025		83,025		73,425		98,425		48,424		3,424
Non-brokered deposits	$	1,708,428	$	1,483,139	$	1,513,738	$	1,525,735	$	1,457,201	$	1,393,569	$	1,414,083	$	1,601,135
Plus:
Sweep repurchase agreements		37,273		50,801		50,839		33,578		54,380		50,884		65,760		60,692
Core funding	$	1,745,701	$	1,533,940	$	1,564,577	$	1,559,313	$	1,511,581	$	1,444,453	$	1,479,843	$	1,661,827
Balance sheet amounts are as of period end unless otherwise noted.

SOUTHWEST BANCORP, INC.
UNAUDITED QUARTERLY SUPPLEMENTAL ANALYTICAL DATA
(Dollars in thousands) Table 8

			2015						2014
		Dec. 31		Sep. 30		Jun. 30	Mar. 31		Dec. 31		Sep. 30		Jun. 30		Mar. 31
PERFORMANCE RATIOS
Return on average assets (annualized)		0.78%		0.81%		0.85%		0.92%		1.22%		1.12%		1.27%		0.75%
Return on average common equity (annualized)		6.14		5.94		6.11		6.78		8.62		7.69		9.19		5.68
Return on average tangible common equity
(annualized)*		6.46		5.97		6.14		6.82		8.67		7.74		9.30		5.75
Net interest margin (annualized)		3.48		3.34		3.31		3.25		3.52		3.44		3.50		3.33
Total dividends declared to net income		26.22		27.53		27.45		25.19		12.93		14.88		12.86		21.40
Effective tax rate		35.96		35.84		34.51		37.49		37.50		37.49		37.50		37.49
Efficiency ratio		71.49		68.25		72.43		70.47		68.90		71.39		74.25		73.61
NONPERFORMING ASSETS
Nonaccrual loans	$	19,858	$	15,076	$	8,887	$	9,151	$	9,276	$	15,059	$	16,478	$	16,085
90 days past due and accruing		500		1		-		-		137		-		-		-
Total nonperforming loans		20,358		15,077		8,887		9,151		9,413		15,059		16,478		16,085
Other real estate		2,274		2,274		2,393		2,255		3,097		3,448		4,285		4,654
Total nonperforming assets	$	22,632	$	17,351	$	11,280	$	11,406	$	12,510	$	18,507	$	20,763	$	20,739
Potential problem loans	$	39,155	$	29,807	$	34,974	$	38,970	$	34,037	$	64,375	$	84,175	$	91,765
ASSET QUALITY RATIOS
Nonperforming assets to portfolio loans and
other real estate		1.28%		1.12%		0.78%		0.80%		0.89%		1.36%		1.54%		1.57%
Nonperforming loans to portfolio loans		1.15		0.98		0.62		0.64		0.67		1.10		1.23		1.22
Allowance for loan losses to portfolio loans		1.47		1.73		1.82		1.91		2.03		2.27		2.46		2.66
Allowance for loan losses to
nonperforming loans		128.49		176.38		295.03		297.78		302.26		205.29		200.77		217.13
Net loan charge-offs to average portfolio
loans (annualized)		(0.02)		(0.09)		(0.03)		(0.20)		0.02		(0.21)		0.45		0.24
CAPITAL RATIOS
Average total shareholders' equity to
average assets		12.77%		13.59%		13.87%		13.59%		14.19%		14.61%		13.77%		13.18%
Leverage ratio		14.19		15.84		16.12		15.75		16.45		16.86		15.95		15.09
Common equity tier 1 capital		13.21		14.57		15.30		15.51		n/a		n/a		n/a		n/a
Tier 1 capital to risk-weighted assets		15.30		16.95		17.84		18.10		19.70		20.05		20.13		19.98
Total capital to risk-weighted assets		16.55		18.21		19.09		19.36		20.96		21.34		21.43		21.29
Tangible common equity to tangible assets***		11.95		13.40		13.40		13.48		13.87		14.23		14.31		13.01
REGULATORY CAPITAL DATA
Common equity tier 1 capital	$	282,737	$	275,350	$	272,048	$	269,007	$	n/a	$	n/a	$	n/a	$	n/a
Tier I capital		327,468		320,350		317,048		314,007		314,216		314,120		309,600		299,938
Total capital		354,300		344,095		339,412		335,734		334,348		334,456		329,586		319,516
Total risk adjusted assets		2,140,344		1,889,892		1,777,618		1,734,401		1,595,032		1,566,996		1,537,903		1,500,957
Average total assets		2,307,421		2,022,972		1,966,577		1,993,446		1,910,688		1,863,127		1,941,064		1,987,231
____________________
*This is a Non-GAAP based financial measure.
***Calculation of Tangible Common Equity to Tangible Assets (Non-GAAP Financial Measure)
Total shareholders' equity	$	296,098	$	277,344	$	273,681	$	271,444	$	270,786	$	271,966	$	271,351	$	264,586
Less goodwill and core deposit intangible		16,361		1,556		1,619		1,681		1,744		1,811		1,881		3,139
Tangible common equity	$	279,737	$	275,788	$	272,062	$	269,763	$	269,042	$	270,155	$	269,470	$	261,447
Total assets	$	2,357,022	$	2,059,899	$	2,031,581	$	2,003,079	$	1,942,034	$	1,900,948	$	1,885,158	$	2,012,053
Less goodwill and core deposit intangible		16,361		1,556		1,619		1,681		1,744		1,811		1,881		3,139
Tangible assets	$	2,340,661	$	2,058,343	$	2,029,962	$	2,001,398	$	1,940,290	$	1,899,137	$	1,883,277	$	2,008,914
Total shareholders' equity to total assets		12.56%		13.46%		13.47%		13.55%		13.94%		14.31%		14.39%		13.15%
Tangible common equity to tangible assets		11.95%		13.40%		13.40%		13.48%		13.87%		14.23%		14.31%		13.01%
Balance sheet amounts and ratios are as of period end unless otherwise noted.

EX-99.2

2015 Fourth Quarter Earnings Presentation NASDAQ: OKSB January 20, 2016

Forward Looking Statements We make forward-looking statements in this presentation that are subject to risks and uncertainties. We intend these statements to be covered by the safe harbor provision for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. These forward-looking statements include: • Statements of Southwest's goals, intentions, and expectations; • Estimates of risks and of future costs and benefits; • Expectations regarding our future financial performance and the financial performance of our operating segments; • Expectations regarding regulatory actions; • Expectations regarding our ability to utilize tax loss benefits; • Expectations regarding our stock repurchase program; • Expectations regarding dividends; • Expectations regarding acquisitions and divestitures; • Assessments of loan quality, probable loan losses, and the amount and timing of loan payoffs; • Estimates of the value of assets held for sale or available for sale; and • Statements of our ability to achieve financial and other goals. These forward-looking statements are subject to significant uncertainties because they are based upon: the amount and timing of future changes in interest rates, market behavior, and other economic conditions; future laws, regulations, and accounting principles; changes in regulatory standards and examination policies, and a variety of other matters. These other matters include, among other things, the direct and indirect effects of economic conditions on interest rates, credit quality, loan demand, liquidity, and monetary and supervisory policies of banking regulators. 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 our future results. For other factors, risks, and uncertainties that could cause actual results to differ materially from estimates and projections contained in forward-looking statements, please read the “Risk Factors” contained in Southwest’s reports to the Securities and Exchange Commission. We do not intend, or undertake no obligation, to update or revise any forward-looking statements contained in this presentation, whether as a result of differences in actual results, changes in assumptions, or changes in other factors affecting said statements, except as required by law.

2015 Highlights Achieved net income of $17.4 million or $0.90 per fully diluted share in 2015. Successfully closed the acquisition and completed the integration of First Commercial Bank. Identified and acquired talented individuals and teams. This included: new market leadership in Colorado, Austin and Tulsa and new leadership in Consumer Banking, Operations and Technology. Restructured Commercial Banking operations to improve focus on market growth, customer responsiveness and efficiency. Maintained solid credit quality performance with four consecutive months of net recoveries totaling $1.2 million for 2015. Maintained high credit standards while accelerating loan growth focused in areas of expertise, i.e. healthcare, real estate and commercial. Now have recorded eight consecutive quarters of loan growth. Core loan growth of 13% for 2015. Continued improving internal operating efficiency while providing superior customer service. This includes a new investment in a core operating system. Efficiency ratio for 2015 was 68.3% excluding acquisition deal costs compared to 72.0% for 2014 excluding the gain on branch sales. Increased our investment in mortgage underwriting and booking system while adding leadership and delivery channels in Texas and Colorado. We continue to drive a culture that produces consistent, conservative and sustainable revenue and earnings growth.

Fourth Quarter 2015 Highlights Net income of $4.6 million, or $0.23 per diluted share. – Pre-tax, pre-provision income of $6.6 million. Loan portfolio continues to exhibit growth and stability. – Loans increased $231.3 million during the quarter, including $194.0 million of acquired loans, and $379.4 million for the year, or 27%. – Core loan growth for the quarter (excluding acquired loans) was $37.3 million, or 9.6% annualized. – Eight consecutive quarters of loan growth. – Booked $125.9 million in new loan commitments in the quarter. – Net interest margin was 3.48% for the quarter up from 3.34% in the third quarter. Legacy credit portfolio continued to improve while absorbing acquired loans. – Potential Problem Loans increased by $9.3 million to $39.2 million (inclusive of $11.4 million in acquired loans). – Total criticized assets increased by $20.2 million to $71.0 million (inclusive of $20.7 million in acquired loans). – NPLs increased by $5.2 million to $20.3 million (inclusive of $4.1 million in acquired loans). – Loss reserve is at 1.47% of total loans. Loss reserve and purchase discount on acquired loans represents 1.96% of gross loans. – Net recoveries were $0.1 million, fourth consecutive quarter of net recoveries. – Loan loss provision for the quarter was a release of $0.6 million.

Fourth Quarter 2015 Highlights (cont.) Positive non-interest income, including mortgage loan sales, deposit fees and swap fees. Capital ratios remain strong and above minimum well-capitalized standards. Efficiency ratio for fourth quarter was 66.9% (excluding deal costs of $1.4 million) compared to 67.3% (excluding deal costs of $339,000) for the third quarter of 2015 and 68.9% for the fourth quarter of 2014. Our board declared an increase in the quarterly dividend to $0.08 per share to shareholders of record as of January 29, 2016 and payable on February 12, 2016.

Energy Highlights Fourth Quarter 2015 Total direct energy exposure at year end included $96.7 million in commitments and $63.4 million in funded debt. Down from $107.9 million and $68.6 million at 9/30/15. Energy exposure represents 3.6% of total funded credit portfolio. Four credits totaling $9.1 million, or 14.0%, of the energy portfolio were criticized. One credit of $5.5 million is non-accrual with a $1.2 million allocated reserve. Including the specific allocation, the ALLL for energy credits is 4.0%. No participations purchased in our reserve-based portfolio. Only ten reserve-based borrowers with credit in excess of $1.0 million. Approved one new energy credit over $1.0 million in exposure in 2015 but has not yet closed. Portfolio has been stressed at $30 flat and front month pricing of $23. 75% of funded service portfolio is comprised of three credits, all of which are participations purchased from larger banks.

Financial Highlights ($ in thousands except per share data) Balance Sheet 2013 FY 12/31/13 2014 FY 12/31/14 2015 FY 12/31/15 2014 FQ4 12/31/14 2015 FQ1 3/31/15 2015 FQ2 6/30/15 2015 FQ3 9/30/15 2015 FQ4 12/31/15 Total Assets Total Gross Loans Total Deposits Total Equity Profitability (%) 1,981,423 1,270,903 1,584,086 259,187 1,942,034 1,399,991 1,533,999 270,786 2,357,022 1,779,429 1,884,105 296,098 1,942,034 1,399,991 1,533,999 270,786 2,003,079 1,438,245 1,616,454 271,444 2,031,581 1,449,430 1,624,446 273,681 2,059,899 1,548,094 1,626,250 277,344 2,357,022 1,779,429 1,884,105 296,098 Net Income ($000) ROAA ROAE Net Interest Margin Efficiency Ratio Balance Sheet Ratios / Capital (%) 17,435 0.86 6.90 3.19 73.30 21,030 1.09 7.82 3.45 72.02 17,407 0.84 6.23 3.35 70.67 5,899 1.22 8.62 3.52 68.90 4,535 0.92 6.78 3.25 70.47 4,161 0.85 6.11 3.31 72.43 4,122 0.81 5.94 3.34 68.25 4,589 0.78 6.14 3.48 71.49 Loans/ Deposits Tangible Common Equity/ Tang Assets(1)(3) Common Equity Tier 1 Capital Ratio Tier 1 Risk Based Capital Ratio Total Risk Based Capital Ratio Tier 1 Leverage Ratio Asset Quality (%)(2) 80.23 12.94 NA 20.28 21.59 14.86 91.26 13.89 NA 19.70 20.96 16.45 94.44 11.95 NA 15.30 16.52 14.19 91.26 13.87 NA 19.70 20.96 16.45 88.98 13.48 15.51 18.10 19.36 15.75 89.23 13.40 15.30 17.84 19.09 16.12 95.19 13.40 14.58 16.97 18.22 15.84 94.44 11.95 NA 15.30 16.52 14.19 NPLs/ Portfolio Loans NCOs/ Avg Portfolio Loans Reserves/Portfolio Loans Reserves/ NPLs Per Share Data Tangible Book Value Per Share(1)(3) Earnings Per Share 1.57 0.22 2.89 184.50 12.97 0.89 0.67 0.12 2.03 302.26 14.02 1.07 1.15 (0.08) 1.47 128.49 13.98 0.90 0.67 0.02 2.03 302.26 14.02 0.30 0.64 (0.20) 1.91 297.78 14.17 0.24 0.62 (0.03) 1.82 295.03 14.29 0.22 0.98 (0.09) 1.73 176.38 14.49 0.22 1.15 (0.02) 1.47 128.49 13.98 0.23 (1) Intangible assets defined as goodwill for purposes of these calculations. (2) NPLs defined as Non-Accrual loans + Loans 90+ Days Past Due, NPAs defined as NPLs + OREO. (3) This is a non-GAAP based financial measure. See Appendix for reconciliation to the most directly comparable GAAP based measure.

Earnings Results Earnings Summary ($ in thousands, except per share) 12/31/15 Three Months Ended 9/30/15 12/31/14 Q4 '15 vs. Q3 '15 % Change Net interest income Provision for loan losses Noninterest income Noninterest expense Income before taxes Taxes on income Net income $ 19,520 (566) 4,179 17,099 7,166 2,577 4,589 $ 16,496 23 4,029 14,077 6,425 2,303 4,122 $ 16,592 (2,386) 4,576 14,115 9,439 3,540 5,899 18.3% 2,560.9% 3.7% 21.5% 11.5% 11.9% 11.3% Pre-tax, pre-provision income (1) 6,600 6,448 7,053 2.4% Diluted earnings per share $ 0.23 $ 0.22 $ 0.30 (1) This is a non-GAAP based financial measure. See Appendix for reconciliation to the most directly comparable GAAP based measure.

Owner Occupied CRE $307.4 17% Non-Owner Occupied CRE $630.7 36%Residential Real Estate $183.4 10%Consumer $21.4 1% Construction & Development $129.5 7% Commercial & Industrial $507.0 29% Loan Portfolio 9Dollars in millions. Loans by Type Loans by Segment Owner Occupied CRE $345.2 25% Non-Owner Occupied CRE $408.9 29% Residential Real Estate $86.4 6% Consumer $21.5 2% Construction & Development $188.0 13% Commercial & Industrial $349.9 25% 12/31/2015 $1.78 billion 12/31/2014 $1.40 billion Kansas $150.5 8% Oklahoma $1,009.7 57% Colorado $38.8 2% Texas $580.5 33% Kansas $146.0 10% Oklahoma $793.3 57% Texas $460.7 33% Owner Occupied CRE $307.4 17% Non-Owner Occupied CRE $630.7 36%Residential Real Estate $183.4 10%Consumer $21.4 1% Construction & Development $129.5 7% Commercial & Industrial $507.0 29% Loan Portfolio 9Dollars in millions. Loans by Type Loans by Segment Owner Occupied CRE $345.2 25% Non-Owner Occupied CRE $408.9 29% Residential Real Estate $86.4 6% Consumer $21.5 2% Construction & Development $188.0 13% Commercial & Industrial $349.9 25% 12/31/2015 $1.78 billion 12/31/2014 $1.40 billion Kansas $150.5 8% Oklahoma $1,009.7 57% Colorado $38.8 2% Texas $580.5 33% Kansas $146.0 10% Oklahoma $793.3 57% Texas $460.7 33%

Owner Occupied CRE $1.1 5% Non Owner Occupied CRE $2.9 14% Residential Real Estate $1.8 9% Consumer $0.1 0% Construction & Development $1.0 5% Commercial & Industrial $3.1 16% Energy Commercial & Industrial $5.5 27% Healthcare Commercial & Industrial $4.8 24% Nonperforming Loans 10Dollars in millions. Nonperforming loans include non-accruals and 90 days past due loans. By Type By Geographic Location Owner Occupied CRE $2.1 22% Non-Owner Occupied CRE $0.1 1% Residential Real Estate $1.1 12% Construction & Development $0.1 1% Commercial & Industrial $0.3 3% Healthcare Commercial & Industrial $5.7 61% 12/31/2015 $20.3 million 12/31/2014 $9.4 million Kansas $0.7 3% Oklahoma $4.8 23% Arizona $4.5 22% Texas $7.8 39% Other $2.5 13% Kansas $1.8 20% Oklahoma $1.8 19%Arizona $5.0 53% Texas $0.7 7% Other $0.1 1% Owner Occupied CRE $1.1 5% Non Owner Occupied CRE $2.9 14% Residential Real Estate $1.8 9% Consumer $0.1 0% Construction & Development $1.0 5% Commercial & Industrial $3.1 16% Energy Commercial & Industrial $5.5 27% Healthcare Commercial & Industrial $4.8 24% Nonperforming Loans 10Dollars in millions. Nonperforming loans include non-accruals and 90 days past due loans. By Type By Geographic Location Owner Occupied CRE $2.1 22% Non-Owner Occupied CRE $0.1 1% Residential Real Estate $1.1 12% Construction & Development $0.1 1% Commercial & Industrial $0.3 3% Healthcare Commercial & Industrial $5.7 61% 12/31/2015 $20.3 million 12/31/2014 $9.4 million Kansas $0.7 3% Oklahoma $4.8 23% Arizona $4.5 22% Texas $7.8 39% Other $2.5 13% Kansas $1.8 20% Oklahoma $1.8 19%Arizona $5.0 53% Texas $0.7 7% Other $0.1 1%

Criticized Assets 11 $19,872 $16,085 $16,478 $15,059 $9,413 $9,151 $8,887 $15,077 $20,317 $99,750 $91,765 $84,175 $64,375 $34,037 $38,970 $34,974 $29,807 $39,155 $93,231 $87,411 $62,759 $41,224 $41,979 $48,895 $41,876 $3,605 $9,229 $2,654 $4,654 $4,285 $3,448 $3,097 $2,255 $2,393 $2,274 $2,274 2013 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Nonperforming Loans Potential Problem Loans Special Mention Loans Other Real Estate Dollars in thousands. Nonperforming loans include non-accruals and 90 days past due loans. PPL is defined as potential problem loans. Criticized Assets 11 $19,872 $16,085 $16,478 $15,059 $9,413 $9,151 $8,887 $15,077 $20,317 $99,750 $91,765 $84,175 $64,375 $34,037 $38,970 $34,974 $29,807 $39,155 $93,231 $87,411 $62,759 $41,224 $41,979 $48,895 $41,876 $3,605 $9,229 $2,654 $4,654 $4,285 $3,448 $3,097 $2,255 $2,393 $2,274 $2,274 2013 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Nonperforming Loans Potential Problem Loans Special Mention Loans Other Real Estate Dollars in thousands. Nonperforming loans include non-accruals and 90 days past due loans. PPL is defined as potential problem loans.

Loan Loss Reserve to NPL+PPL 12 30.65% 32.38% 32.87% 38.92% 65.48% 56.63% 59.78% 59.25% 43.90% 2013 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Nonperforming loans include non-accruals and 90 days past due loans. PPL is defined as potential problem loans. Loan Loss Reserve to NPL+PPL 12 30.65% 32.38% 32.87% 38.92% 65.48% 56.63% 59.78% 59.25% 43.90% 2013 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Nonperforming loans include non-accruals and 90 days past due loans. PPL is defined as potential problem loans.

Credit Risk Profile Nonperforming assets defined as nonaccrual loans, loans past due 90 days or more and still accruing, and other real estate owned.

Strong Core Deposit Franchise $1.9 billion Total Deposits (12/31/15) Deposits by Type Cost of Deposits 0.40% 0.36% 0.34% 0.34% 0.32% 0.31% 0.32% 0.33% 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 Non-interest Bearing Demand$596 32%Interest Bearing Demand$151 8%Money market Accounts$534 28%Savings Accounts$56 3%Time Deposits $100,000 or More$312 17%Other Time Deposits$234 12%0.37% Dollars in millions.

NIM/Cost of Funds ($000s) $25,000  $20,000 $15,000 $10,000 $5,000 $0.40% 0.36% 0.34% 0.34% 0.32% 0.31% 0.32% 0.33% 0.37% 3.42% 3.33% 3.50% 3.44% 3.52% 3.25% 3.31% 3.34% 3.48% 5.0%4.5% 4.0% 3.5% 3.0% 2.5% 2.0% 1.5% 1.0% 0.5% 0.0% Q4 '13 Q1 '14 Q2'14 Q3 '14 Q4 '14 Q1 '15 Q2 '15 Q3 '15 Q4 '15 Net Interest Income Cost of Deposits Net Interest Margin

Noninterest Income 16 $3,068 $3,025 $8,246 $3,084 $4,576 $2,840 $3,409 $4,029 $4,179 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Service Charges and Fees Gain on Sales of Loans Gain on Investment Securities Other Dollars in thousands. Noninterest Income 16 $3,068 $3,025 $8,246 $3,084 $4,576 $2,840 $3,409 $4,029 $4,179 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Service Charges and Fees Gain on Sales of Loans Gain on Investment Securities Other Dollars in thousands.

$15,065 $14,107 $15,332 $13,358 $14,115 $13,082 $13,982 $14,077 $17,099 12/31/13 3/3/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Salaries and Employee Benefits Occupancy General and Administrative Other Noninterest Expense 17 Dollars in thousands. $15,065 $14,107 $15,332 $13,358 $14,115 $13,082 $13,982 $14,077 $17,099 12/31/13 3/3/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Salaries and Employee Benefits Occupancy General and Administrative Other Noninterest Expense 17 Dollars in thousands.

Strong Regulatory Capital Position Tier 1 Leverage Ratio Tier 1 Risk Based Capital Ratio 20.3% 20.3% 19.7% 15.3% 0% 5% 10% 15% 20% 25% 15.0% 14.9% 16.5% 14.2% 0% 5% 10% 15% 20% 25% * * 2012 2013 2014 2015 2012 2013 2014 2015 Total Risk Based Capital Ratio Tier 1 Common Ratio 2012 2013 2014 2015 2012 2013 2014 2015 15.2% 17.2% 16.9% 13.2% 0% 5% 10% 15% 20% 25% * * 21.6% 21.6% 21.0% 16.5% 0% 5% 10% 15% 20% 25% *Well-capitalized minimum.

2016 Priorities Maintain strong credit quality along with conservative balance sheet and risk management. Continue appropriate growth in the commercial banking sector. Grow deposit base commensurate with loan growth. Focus on fee based income growth in mortgage, consumer and treasury. Assess, manage and add talent where available and appropriate throughout the organization. Drive growth in the healthcare banking segment. Deploy capital in a manner that grows the organization and enhances shareholder value. Manage expenses to drive operating efficiency improvements. Ensure that the repurchase and dividend programs are providing the best shareholder returns.

ADDITIONAL FINANCIAL INFORMATION

Quarterly Net Income 21 $6.8 $3.7 $6.2 $5.3 $5.9 $4.5 $4.2 $4.1 $4.6 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Dollars in millions. Quarterly Net Income 21 $6.8 $3.7 $6.2 $5.3 $5.9 $4.5 $4.2 $4.1 $4.6 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Dollars in millions.

Quarterly Pre-Tax, Pre-Provision Income 22 $4.6 $4.9 $5.1 (1) $5.6 $5.9 (2) $5.4 $5.2 $6.4 $6.6 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Dollars in millions. (1) Excludes gain on sale of branches. (2) Excludes gain on sale of private equity security. Quarterly Pre-Tax, Pre-Provision Income 22 $4.6 $4.9 $5.1 (1) $5.6 $5.9 (2) $5.4 $5.2 $6.4 $6.6 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Dollars in millions. (1) Excludes gain on sale of branches. (2) Excludes gain on sale of private equity security.

Quarterly Net Interest Margin 23 3.42% 3.33% 3.50% 3.44% 3.52% 3.25% 3.31% 3.34% 3.48% 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Quarterly Net Interest Margin 23 3.42% 3.33% 3.50% 3.44% 3.52% 3.25% 3.31% 3.34% 3.48% 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15

Total Loans by Segment 24 $705.21 $777.38 $798.07 $800.20 $793.27 $814.95 $810.37 $832.28 $1,009.69 $366.70 $372.02 $408.39 $424.64 $460.68 $478.01 $493.05 $563.01 $580.48 $198.99 $170.72 $145.25 $142.55 $146.04 $145.29 $146.02 $152.80 $150.48 $38.79 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Oklahoma Texas Kansas Colorado Dollars in millions. Total Loans by Segment 24 $705.21 $777.38 $798.07 $800.20 $793.27 $814.95 $810.37 $832.28 $1,009.69 $366.70 $372.02 $408.39 $424.64 $460.68 $478.01 $493.05 $563.01 $580.48 $198.99 $170.72 $145.25 $142.55 $146.04 $145.29 $146.02 $152.80 $150.48 $38.79 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Oklahoma Texas Kansas Colorado Dollars in millions.

Potential Problem Loans by Segment 25 $29.0 $29.2 $23.9 $23.9 $25.0 $26.7 $23.2 $23.6 $30.2 $65.1 $58.4 $57.0 $38.6 $6.3 $9.5 $9.2 $4.1 $4.2 $5.7 $4.2 $3.2 $1.9 $2.8 $2.7 $2.6 $2.1 $2.0 $2.8 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/3/15 6/30/15 9/30/15 12/31/15 Oklahoma Texas Kansas Colorado Dollars in millions. Potential Problem Loans by Segment 25 $29.0 $29.2 $23.9 $23.9 $25.0 $26.7 $23.2 $23.6 $30.2 $65.1 $58.4 $57.0 $38.6 $6.3 $9.5 $9.2 $4.1 $4.2 $5.7 $4.2 $3.2 $1.9 $2.8 $2.7 $2.6 $2.1 $2.0 $2.8 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/3/15 6/30/15 9/30/15 12/31/15 Oklahoma Texas Kansas Colorado Dollars in millions.

Provision for Loan Loss 26 $(6.50) $(0.99) $(0.36) $(2.90) $(2.39) $(1.89) $(1.14) $0.02 $(0.57) 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Dollars in millions. Provision for Loan Loss 26 $(6.50) $(0.99) $(0.36) $(2.90) $(2.39) $(1.89) $(1.14) $0.02 $(0.57) 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Dollars in millions.

Loan Loss Reserve to Total Portfolio Loans 27 2.89% 2.66% 2.46% 2.27% 2.03% 1.91% 1.82% 1.73% 1.47% 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Loan Loss Reserve to Total Portfolio Loans 27 2.89% 2.66% 2.46% 2.27% 2.03% 1.91% 1.82% 1.73% 1.47% 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15

Loan Loss Reserve to Nonperforming Loans 28 184.50% 217.13% 200.77% 205.29% 302.26% 297.78% 295.03% 176.38% 128.49% 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Loan Loss Reserve to Nonperforming Loans 28 184.50% 217.13% 200.77% 205.29% 302.26% 297.78% 295.03% 176.38% 128.49% 12/31/13 3/31/14 6/30/14 9/30/14 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15

APPENDIX

The subsequent tables present non-GAAP reconciliations of the following calculations: – Tangible Common Equity (TCE) to Tangible Assets (TA) ratio – Tangible Book Value per Share – Pre-tax, Pre-provision Income

TCA to TA and Tangible Book Value Per Share 2013 FY 2014 FY 2015 FY 2014 FQ4 2015 FQ1 2015 FQ2 2015 FQ3 2015 FQ4 12/31/13 12/31/14 12/31/15 12/31/14 3/31/15 6/30/15 9/30/15 12/31/15 Total Equity $ 259,187 $ 270,786 $ 296,098 $ 270,786 $ 271,444 $ 273,681 $ 277,344 $ 296,098 Less Goodwill & Core Deposits 3,272 1,744 16,361 1,744 1,681 1,619 1,556 16,361 TCE $ 255,915 $ 269,042 $ 279,737 $ 269,042 $ 269,763 $ 272,062 $ 275,788 $ 279,737 Total Assets $ 1,981,423 $ 1,942,034 $ 2,357,022 $ 1,942,034 $ 2,003,079 $ 2,031,581 $ 2,059,899 $ 2,357,022 Less Goodwill & Core Deposits 3,272 1,744 16,361 1,744 1,681 1,619 1,556 16,361 TA $ 1,978,151 $ 1,940,290 $ 2,340,661 $ 1,940,290 $ 2,001,398 $ 2,029,962 $ 2,058,343 $ 2,340,661 Common Equity to Assets 13.08% 13.94% 12.56% 13.94% 13.55% 13.47% 13.46% 12.56% TCE to TA 12.94% 13.87% 11.95% 13.87% 13.48% 13.40% 13.40% 11.95% Shares outstanding 19,732,926 19,193,059 20,006,802 19,193,059 19,033,040 19,033,545 19,032,719 20,006,802 Book Value per Common Share $13.13 $14.11 $14.80 $14.11 $14.26 $14.38 $14.57 $14.80 Tangible BV per Share $12.97 $14.02 $13.98 $14.02 $14.17 $14.29 $14.49 $13.98 Pre-tax, Pre-provision Income 12/31/133/31/146/30/149/30/1412/31/143/31/156/30/159/30/1512/31/15Net Income6,832$ 3,691$ 6,152$ 5,288$ 5,899$ 4,535$ 4,161$ 4,122$ 4,589$ Taxes on Income4,310 2,214 3,691 3,172 3,540 2,720 2,193 2,303 2,577 Provision(6,502) (986) (355) (2,897) (2,386) (1,887) (1,136) 23 (566) Pre-tax, Pre-Provision Income4,640$ 4,919$ 9,488$ 5,563$ 7,053$ 5,368$ 5,218$ 6,448$ 6,600$ Gain on sale of bank branches4,378$ Gain on sale of private equity security1,120$ Adjusted Pre-tax, Pre-Provision Income5,110$ 5,933$ Dollars in thousands, except per share amounts.

2015 Fourth Quarter Earnings Presentation NASDAQ: OKSB January 20, 2016