As filed with the Securities and Exchange Commission on March 15, 2006 ============================================================================== UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) |X| ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2005 OR |_| TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from _____________ to ______________ Commission File No. 0-19341 BOK FINANCIAL CORPORATION (Exact name of registrant as specified in its charter) Oklahoma 73-1373454 (State or other jurisdiction (IRS Employer of Incorporation or Organization) Identification No.) Bank of Oklahoma Tower P.O. Box 2300 Tulsa, Oklahoma 74192 (Address of Principal Executive Offices) (Zip Code) (918) 588-6000 (Registrant's telephone number, including area code) Securities registered pursuant to Section 12 (b) of the Act: None Securities registered pursuant to Section 12 (g) of the Act: Common stock, $0.00006 par value Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes |X| No |_| Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 (d) of the Act. Yes |_| No |X| Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes |X| No |_| Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. |_| Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of "accelerated filer and large accelerated filer" in Rule 12b-2 of the Exchange Act. (Check one): Large accelerated filer |X| Accelerated filer |_| Non-accelerated filer |_| Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes |_| No |X| The aggregate market value of the registrant's common stock ("Common Stock") held by non-affiliates is approximately $948,181,172 (based on the June 30, 2005 closing price of Common Stock of $46.12 per share). As of March 1, 2006, there were 66,955,508 shares of Common Stock outstanding. DOCUMENTS INCORPORATED BY REFERENCE Document of the Registrant Reference Locations Portions of the 2005 Annual Report to Shareholders Parts I, II, III and IV Portions of the 2006 Proxy Statement Part III =============================================================================== BOK FINANCIAL CORPORATION ANNUAL REPORT ON FORM 10-K INDEX ITEM PAGE PART I 1. Business 3 1A. Risk Factors 8 1B. Unresolved Staff Comments 12 2. Properties 12 3. Legal Proceedings 12 4. Submission of Matters to a Vote of Security Holders 12 PART II 5. Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities 13 6. Selected Financial Data 14 7. Management's Discussion and Analysis of Financial Condition and Results of Operations 14 7A. Quantitative and Qualitative Disclosures About Market Risk 14 8. Financial Statements and Supplementary Data 15 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure 15 9A. Controls and Procedures 15 9B. Other Information 15 PART III 10. Directors and Executive Officers of the Registrant 16 11. Executive Compensation 16 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters 16 13. Certain Relationships and Related Transactions 16 14. Principal Accountant Fees and Services 16 PART IV 15. Exhibits, Financial Statement Schedules 17 Signatures 26 Chief Executive Officer Section 302 Certification Exhibit 31.1 Chief Financial Officer Section 302 Certification Exhibit 31.2 Section 906 Certifications Exhibit 32 3 PART I ITEM 1. BUSINESS General Developments relating to individual aspects of the business of BOK Financial Corporation ("BOK Financial" or "the Company") are described below. Additional discussion of the Company's activities during the current year is incorporated by reference to the "Management's Assessment of Operations and Financial Condition" section of BOK Financial's 2005 Annual Report to Shareholders (the "2005 Annual Report"). Information regarding BOK Financial's acquisitions is incorporated by reference to Note 2 of "Notes to Consolidated Financial Statements" within the 2005 Annual Report. Description of Business BOK Financial is a financial holding company whose activities are limited by the Bank Holding Company Act of 1956 ("BHCA"), as amended by the Financial Services Modernization Act or Gramm-Leach-Bliley Act. BOK Financial offers full service banking in Oklahoma, Dallas and Houston, Texas, Albuquerque, New Mexico, Northwest Arkansas, Denver, Colorado, and Phoenix, Arizona. The Company also has commercial loan production, mortgage banking and institutional sales offices in the Kansas City market. Principal subsidiaries are Bank of Oklahoma, N.A. ("BOk"), Bank of Texas, N.A., Bank of Albuquerque, N.A., Bank of Arkansas, N.A., Colorado State Bank and Trust, N.A. and Bank of Arizona, N.A. (collectively, the "Banks"). Other subsidiaries include BOSC, Inc., a broker/dealer that engages in retail and institutional securities sales and municipal bond underwriting. Other non-bank subsidiary operations are not significant. Our overall strategic objective is to emphasize growth in long-term value by building on our leadership position in Oklahoma and expanding into high-growth markets. We have a solid position in Oklahoma and are the state's largest financial institution as measured by deposit market share. Since 1997, we have expanded into Dallas and Houston, Texas, Albuquerque, New Mexico, Denver, Colorado, and Phoenix, Arizona. We are currently exploring opportunities for further growth in our regional markets and expansion into the Kansas City market through acquisition or de novo banking operations. Our primary focus is to provide a broad range of financial products and services, including loans and deposits, cash management services, fiduciary services, mortgage banking and brokerage and trading services to middle-market businesses, financial institutions and consumers. Our revenue sources are diversified. Approximately 43% of our revenue comes from commissions and fees. Commercial banking is a significant part of our business. Our credit culture emphasizes building relationships by making high quality loans and providing a full range of financial products and services to our customers. Our acquisition strategy targets quality organizations that have demonstrated solid growth in their business lines. We provide additional growth opportunities by hiring talent to enhance competitiveness, adding locations, and broadening product offerings. Our operating philosophy embraces local decision-making through the boards of directors for each of our bank subsidiaries. BOK Financial's corporate headquarters is located at Bank of Oklahoma Tower, P.O. Box 2300, Tulsa, Oklahoma 74192. The Company's Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to those reports are available on the Company's website at www.bokf.com as soon as reasonably practicable after the Company electronically files such material with or furnishes it to the Securities and Exchange Commission. 4 Operating Segments BOK Financial operates five principal lines of business: Oklahoma corporate banking, Oklahoma consumer banking, mortgage banking, wealth management, and regional banking. Mortgage banking activities include loan origination and servicing across all markets served by the Company. Wealth management provides brokerage and trading, private financial services and investment advisory services in all markets. Wealth management also provides fiduciary services in all markets except Colorado. Fiduciary services in Colorado are included in regional banking. Regional banking consists primarily of corporate and consumer banking activities in the respective local markets. Discussion of these principal lines of business is incorporated by reference to the Lines of Business section of Management's Discussion and Analysis within the 2005 Annual Report and to Note 18 of Notes to Consolidated Financial Statements within the 2005 Annual Report. Competition BOK Financial and its operating segments face competition from other banks, thrifts, credit unions and other non-bank financial institutions, such as investment banking firms, investment advisory firms, brokerage firms, investment companies, government agencies, mortgage brokers and insurance companies. The Company competes largely on the basis of customer services, interest rates on loans and deposits, lending limits and customer convenience. Some operating segments face competition from institutions that are not as closely regulated as banks, and therefore are not limited by the same capital requirements and other restrictions. All market share information presented below is based upon share of deposits in specified areas according to SNL DataSource as of December 31, 2005. BOk is the largest banking subsidiary of BOK Financial and has the largest market share in Oklahoma with 12% of the state's total deposits. In the Tulsa and Oklahoma City areas, BOk has 27% and 10% of the market share, respectively. BOk competes with two banks that have operations nationwide and have greater access to funds at lower costs, higher lending limits, and greater access to technology resources. BOk also competes with regional and locally owned banks in both the Tulsa and Oklahoma City areas, as well as in every other community in which we do business throughout the state. Through other subsidiary banks, BOK Financial competes in Dallas-Fort Worth and Houston, Texas, Albuquerque, New Mexico, Denver, Colorado, Phoenix, Arizona, and Northwest Arkansas. Bank of Texas competes against numerous financial institutions, including some of the largest in the United States, and has a market share of approximately 1% in each of the Dallas-Fort Worth and Houston areas. Bank of Albuquerque has a number four market share position with 11% of deposits in the Albuquerque area and competes with two large national banks, some regional banks and several locally-owned smaller community banks. Colorado State Bank and Trust has a market share of approximately 1% in the Denver area. Bank of Arizona operates as a community bank with locations in Phoenix and Scottsdale. Bank of Arkansas serves Benton and Washington counties in Arkansas. The Company's ability to expand into additional states remains subject to various federal and state laws. Employees As of December 31, 2005, BOK Financial and its subsidiaries employed 3,825 full-time equivalent employees. None of the Company's employees are represented by collective bargaining agreements. Management considers its employee relations to be good. Supervision and Regulation BOK Financial and its subsidiaries are subject to extensive regulations under federal and state laws. These regulations are designed to protect depositors, the Bank Insurance Fund and the banking system as a whole and not necessarily to protect shareholders and creditors. As detailed below, these regulations may restrict the Company's ability to diversify, to acquire other institutions and to pay dividends on its capital 5 stock. They also may require the Company to provide financial support to its subsidiaries, maintain certain capital balances and pay higher deposit insurance premiums. Proposals to change laws and regulations governing the banking industry are frequently introduced in Congress, in the state legislatures and before bank regulatory agencies. The likelihood and timing of any new proposals or legislation and the impact they might have on the Company and its subsidiaries cannot be predicted at this time. The following information summarizes certain laws and regulations that affect the Company's operations. It does not discuss all provisions of these laws and regulations and it does not summarize all laws and regulations that affect the Company. General As a financial holding company, BOK Financial is regulated under the BHCA and is subject to regular inspection, examination and supervision by the Board of Governors of the Federal Reserve System (the "Federal Reserve Board"). Under the BHCA, BOK Financial files quarterly reports and other information with the Federal Reserve Board. The Banks are organized as national banking associations under the National Banking Act, and are subject to regulation, supervision and examination by the Office of the Comptroller of the Currency (the "OCC"), the Federal Deposit Insurance Corporation (the "FDIC"), the Federal Reserve Board and other federal and state regulatory agencies. The OCC has primary supervisory responsibility for national banks and must approve certain corporate or structural changes, including changes in capitalization, payment of dividends, change of place of business, and establishment of a branch or operating subsidiary. The OCC performs its functions through national bank examiners who provide the OCC with information concerning the soundness of a national bank, the quality of management and directors, and compliance with applicable regulations. The National Banking Act authorizes the OCC to examine every national bank as often as necessary. A financial holding company, and the companies under its control, are permitted to engage in activities considered "financial in nature" as defined by the Gramm-Leach-Bliley Act and Federal Reserve Board interpretations, and therefore may engage in a broader range of activities than permitted for bank holding companies and their subsidiaries. Activities that are "financial in nature" include securities underwriting and dealing, insurance underwriting, operating a mortgage company, credit card company or factoring company, performing certain data processing operations, servicing loans and other extensions of credit, providing investment and financial advice, owning and operating savings and loan associations, and leasing personal property on a full pay-out, non-operating basis. In order for a financial holding company to commence any new activity permitted by the BHCA, each insured depository institution subsidiary of the financial holding company must have received a rating of at least satisfactory in its most recent examination under the Community Reinvestment Act. A financial holding company is required to notify the Federal Reserve Board within thirty days of engaging in new activities determined to be "financial in nature." BOK Financial is engaged in some of these activities and has notified the Federal Reserve Board. The BHCA requires the Federal Reserve Board's prior approval for the direct or indirect acquisition of more than five percent of any class of voting stock of any non-affiliated bank. Under the Federal Bank Merger Act, the prior approval of the OCC is required for a national bank to merge with another bank or purchase the assets or assume the deposits of another bank. In reviewing applications seeking approval of merger and acquisition transactions, the bank regulatory authorities consider, among other things, the competitive effect and public benefits of the transactions, the capital position of the combined organization, the applicant's performance record under the Community Reinvestment Act and fair housing laws and the effectiveness of the subject organizations in combating money laundering activities. A financial holding company and its subsidiaries are prohibited under the BHCA from engaging in certain tie-in arrangements in connection with the provision of any credit, property or services. Thus, a subsidiary of a financial holding company may not extend credit, lease or sell property, furnish any 6 services or fix or vary the consideration for these activities on the condition that (1) the customer obtain or provide additional credit, property or services from or to the financial holding company or any subsidiary thereof, or (2) the customer may not obtain some other credit, property or services from a competitor, except to the extent reasonable conditions are imposed to insure the soundness of credit extended. The Banks and other non-bank subsidiaries are also subject to other federal and state laws and regulations. For example, BOSC, Inc., the Company's broker/dealer subsidiary that engages in retail and institutional securities sales and municipal bond underwriting, is regulated by the Securities and Exchange Commission, the National Association of Securities Dealers, Inc., the Federal Reserve Board, the National Futures Association and state securities regulators. As another example, Bank of Arkansas is subject to certain consumer-protection laws incorporated in the Arkansas Constitution, which, among other restrictions, limit the maximum interest rate on general loans to five percent above the Federal Reserve Discount Rate and limit the rate on consumer loans to the lower of five percent above the discount rate or seventeen percent. Capital Adequacy and Prompt Corrective Action The Federal Reserve Board, the OCC and the FDIC have issued substantially similar risk-based and leverage capital guidelines applicable to United States banking organizations to ensure capital adequacy based upon the risk levels of assets and off-balance sheet financial instruments. In addition, these regulatory agencies may from time to time require that a banking organization maintain capital above the minimum levels, whether because of its financial condition or actual or anticipated growth. Capital adequacy guidelines and prompt corrective action regulations involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators regarding components, risk weighting and other factors. The Federal Reserve Board risk-based guidelines define a three-tier capital framework. Core capital (Tier 1) includes common shareholders' equity and qualifying preferred stock, less goodwill, most intangible assets and other adjustments. Supplementary capital (Tier 2) consists of preferred stock not qualifying as Tier 1 capital, qualifying mandatory convertible debt securities, limited amounts of subordinated debt, other qualifying term debt and allowances for credit losses, subject to limitations. Market risk capital (Tier 3) includes qualifying unsecured subordinated debt. Assets and off-balance sheet exposures are assigned to one of four categories of risk-weights, based primarily upon relative credit risk. Risk-based capital ratios are calculated by dividing Tier 1 and total capital by risk-weighted assets. For a depository institution to be considered well capitalized under the regulatory framework for prompt corrective action, the institution's Tier 1 and total capital ratios must be at least 6% and 10% on a risk-adjusted basis, respectively. As of December 31, 2005, BOK Financial's Tier 1 and total capital ratios under these guidelines were 9.84% and 12.10%, respectively. The leverage ratio is determined by dividing Tier 1 capital by adjusted average total assets. Banking organizations are required to maintain a ratio of at least 5% to be classified as well capitalized. BOK Financial's leverage ratio at December 31, 2005 was 8.30%. The Federal Deposit Insurance Corporation Improvement Act of 1991 (the "FDICIA"), among other things, identifies five capital categories for insured depository institutions from well capitalized to critically undercapitalized and requires the respective federal regulatory agencies to implement systems for prompt corrective action for institutions failing to meet minimum capital requirements within such categories. FDICIA imposes progressively more restrictive covenants on operations, management and capital distributions, depending upon the category in which an institution is classified. The various regulatory agencies have adopted substantially similar regulations that define the five capital categories identified by FDICIA, using the total risk-based capital, Tier 1 risk-based capital and leverage capital ratios as the relevant capital measures. Such regulations establish various degrees of 7 corrective action to be taken when an institution is considered undercapitalized. Under these guidelines, each of the Banks was considered well capitalized as of December 31, 2005. The federal regulatory authorities' risk-based capital guidelines are based upon the 1988 capital accord of the Basel Committee on Banking Supervision (the "BCBS"). The BCBS is a committee of central banks and bank regulators from the major industrialized countries that develops broad policy guidelines for use by each country's supervisors in determining the supervisory policies they apply. In January 2001, the BCBS released a proposal to replace the 1988 capital accord with a new capital accord that would set capital requirements for operational risk and refine the existing capital requirements for credit risk and market risk exposures. Operational risk refers to the risk of direct or indirect losses resulting from failed internal processes, people, and systems. The 1988 capital accord does not include separate capital requirements for operational risk. In June 2004, the BCBS published the framework for a new set of risk-based capital standards. Release of proposed rules to implement the new capital accord is expected in the first half of 2006. The ultimate timing and final form of a new accord are uncertain. However, it is possible that a new capital accord will eventually be adopted by the BCBS and implemented by the United States federal bank regulatory authorities. The new capital requirements that may arise from a new capital accord could increase minimum capital requirements applicable to BOK Financial and its subsidiaries. Further discussion of regulatory capital, including regulatory capital amounts and ratios, is incorporated by reference to information set forth under the heading "Borrowings and Capital" within Management's Discussion and Analysis and Note 16 of the 2005 Annual Report. Dividends The primary source of liquidity for BOK Financial is dividends from the Banks, which are limited by various banking regulations to net profits, as defined, for the year plus retained profits for the preceding two years and further restricted by minimum capital requirements. Based on the most restrictive limitations, the Banks had excess regulatory capital and could declare up to $158 million of dividends without regulatory approval as of December 31, 2005. BOK Financial management has developed and the Board of Directors has approved an internal capital policy that is more restrictive than the regulatory standards. Under this policy, the Banks could declare dividends of up to $86 million as of December 31, 2005. These amounts are not necessarily indicative of amounts that may be available to be paid in future periods. Source of Strength Doctrine According to Federal Reserve Board policy, bank holding companies are expected to act as a source of financial strength to each subsidiary bank and to commit resources to support each such subsidiary. This support may be required at times when a bank holding company may not be able to provide such support. Similarly, under the cross-guarantee provisions of the Federal Deposit Insurance Act, in the event of a loss suffered by the FDIC as a result of default of a banking subsidiary or related to FDIC assistance provided to a subsidiary in danger of default, the other Banks may be assessed for the FDIC's loss, subject to certain exceptions. Governmental Policies and Economic Factors The operations of BOK Financial and its subsidiaries are affected by legislative changes and by the policies of various regulatory authorities and, in particular, the credit policies of the Federal Reserve Board. An important function of the Federal Reserve Board is to regulate the national supply of bank credit to moderate recessions and curb inflation. Among the instruments of monetary policy used by the Federal Reserve Board to implement its objectives are: open-market operations in U.S. Government securities, changes in the discount rate and federal funds rate on bank borrowings, and changes in reserve 8 requirements on bank deposits. The effect of future changes in such policies on the business and earnings of BOK Financial and its subsidiaries is uncertain. The Sarbanes-Oxley Act (the "Act") addresses many aspects of financial reporting, corporate governance and public company disclosure. Among other things, the Act establishes a comprehensive framework for the oversight of public company auditing and for strengthening the independence of auditors and audit committees. Under the Act, audit committees are responsible for the appointment, compensation and oversight of the work of the auditors. The non-audit services that can be provided to a company by its auditor are limited. Audit committee members are subject to specific rules addressing their independence. The Act also requires enhanced and accelerated financial disclosures, and it establishes various responsibility measures, such as requiring the chief executive officer and chief financial officer to certify to the quality of the company's financial reporting. The Act imposes restrictions on and accelerated reporting requirements for certain insider trading activities. It imposes a variety of penalties for fraud and other violations and creates a federal felony for securities fraud. Various sections of the Act are applicable to BOK Financial. Foreign Operations BOK Financial does not engage in operations in foreign countries, nor does it lend to foreign governments. ITEM 1A. RISK FACTORS ADVERSE REGIONAL ECONOMIC DEVELOPMENTS COULD NEGATIVELY AFFECT BOK FINANCIAL'S BUSINESS. A substantial majority of BOK Financial loans are generated in Oklahoma and other markets in the southwest region. As a result, poor economic conditions in Oklahoma or other markets in the southwest region may cause BOK Financial to incur losses associated with higher default rates and decreased collateral values in BOK Financial's loan portfolio. A regional economic downturn could also adversely affect revenue from brokerage and trading activities, mortgage loan originations and other sources of fee-based revenue. ADVERSE ECONOMIC FACTORS AFFECTING PARTICULAR INDUSTRIES COULD HAVE A NEGATIVE EFFECT ON BOK FINANCIAL CUSTOMERS AND THEIR ABILITY TO MAKE PAYMENTS TO BOK FINANCIAL. Certain industry-specific economic factors also affect BOK Financial. For example, a portion of BOK Financial's total loan portfolio is comprised of loans to borrowers in the energy and agricultural industries, both of which are historically cyclical industries. Low commodity prices may adversely affect those industries and, consequently, may affect BOK Financial's business negatively. In addition, BOK Financial's loan portfolio includes commercial real estate loans. A downturn in the real estate industry in Oklahoma and the Southwest region could also have an adverse effect on BOK Financial's operations. FLUCTUATIONS IN INTEREST RATES COULD ADVERSELY AFFECT BOK FINANCIAL'S BUSINESS. BOK Financial's business is highly sensitive to: o the monetary policies implemented by the Federal Reserve Board, including the discount rate on bank borrowings and changes in reserve requirements, which affect BOK Financial's ability to make loans and the interest rates we may charge; 9 o changes in prevailing interest rates, due to the dependency of BOK Financial's banks on interest income; o open market operations in U.S. Government securities. Significant increase in market interest rates, or the perception that an increase may occur, could adversely affect both BOK Financial's ability to originate new loans and BOK Financial's ability to grow. Conversely, a decrease in interest rates could result in acceleration in the payment of loans, including loans underlying BOK Financial's holdings of mortgage-backed securities and termination of BOK Financial's mortgage servicing rights. In addition, changes in market interest rates, changes in the relationships between short-term and long-term market interest rates or changes in the relationships between different interest rate indices, could affect the interest rates charged on interest-earning assets differently than the interest rates paid on interest-bearing liabilities. This difference could result in an increase in interest expense relative to interest income. An increase in market interest rates also could adversely affect the ability of BOK Financial's floating-rate borrowers to meet their higher payment obligations. If this occurred, it could cause an increase in nonperforming assets and net charge-offs, which could adversely affect BOK Financial's business. BOK FINANCIAL'S SUBSTANTIAL HOLDINGS OF MORTGAGE-BACKED SECURITIES AND MORTGAGE SERVICING RIGHTS COULD ADVERSELY AFFECT BOK FINANCIAL'S BUSINESS. BOK Financial has invested a substantial amount of its holdings in mortgage-backed securities, which are investment interests in pools of mortgages. Mortgage-backed securities are highly sensitive to changes in interest rates. BOK Financial mitigates this risk somewhat by investing principally in shorter duration mortgage products, which are less sensitive to changes in interest rates. A significant decrease in interest rates could lead mortgage holders to refinance the mortgages constituting the pool backing the securities, subjecting BOK Financial to a risk of prepayment and decreased return on investment due to subsequent reinvestment at lower interest rates. Conversely, a significant increase in interest rates could cause mortgage holders to extend the term over which they repay their loans, which delays the Company's opportunity to reinvest funds at higher rates. In addition, as part of BOK Financial's mortgage banking business, BOK Financial has substantial holdings of mortgage servicing rights. The value of these rights is also very sensitive to changes in interest rates. Falling interest rates tend to increase loan prepayments, which may lead to cancellation of the related servicing rights. BOK Financial's investments and dealings in mortgage-related products increase the risk that falling interest rates could adversely affect BOK Financial's business. BOK Financial attempts to manage this risk by maintaining an active hedging program for its mortgage servicing rights. BOK Financial's hedging program has only been partially successful in recent years. SUBSTANTIAL COMPETITION COULD ADVERSELY AFFECT BOK FINANCIAL. Banking is a competitive business. BOK Financial competes actively for loan, deposit and other financial services business in Oklahoma, as well as in BOK Financial's other markets. BOK Financial's competitors include a large number of small and large local and national banks, savings and loan associations, credit unions, trust companies, broker-dealers and underwriters, as well as many financial and nonfinancial firms that offer services similar to BOK Financial's. Large national financial institutions have entered the Oklahoma market. These institutions have substantial capital, technology and marketing resources. Such large financial institutions may have greater access to capital at a lower cost than BOK Financial does, which may adversely affect BOK Financial's ability to compete effectively. 10 BOK Financial has expanded into markets outside of Oklahoma, where it competes with a large number of financial institutions that have an established customer base and greater market share than BOK Financial. BOK Financial may not be able to continue to compete successfully in these markets outside of Oklahoma. With respect to some of its services, BOK Financial competes with non-bank companies that are not subject to regulation. The absence of regulatory requirements may give non-banks a competitive advantage. ADVERSE FACTORS COULD IMPACT BOK FINANCIAL'S ABILITY TO IMPLEMENT ITS OPERATING STRATEGY. Although BOK Financial has developed an operating strategy which it expects to result in continuing improved financial performance, BOK Financial cannot assure you that it will be successful in fulfilling this strategy or that this operating strategy will be successful. Achieving success is dependent upon a number of factors, many of which are beyond BOK Financial's direct control. Factors that may adversely affect BOK Financial's ability to implement its operating strategy include: o deterioration of BOK Financial's asset quality; o inability to control BOK Financial's noninterest expenses; o inability to increase noninterest income; o deterioration in general economic conditions, especially in BOK Financial's core markets; o decreases in net interest margins; o increases in competition; o adverse regulatory developments. BANKING REGULATIONS COULD ADVERSELY AFFECT BOK FINANCIAL. BOK Financial and its subsidiaries are extensively regulated under both federal and state law. In particular, BOK Financial is subject to the Bank Holding Company Act of 1956 and the National Bank Act. These regulations are primarily for the benefit and protection of BOK Financial's customers and not for the benefit of BOK Financial's investors. In the past, BOK Financial's business has been materially affected by these regulations. For example, regulations limit BOK Financial's business to banking and related businesses, and they limit the location of BOK Financial's branches and offices, as well as the amount of deposits that it can hold in a particular state. These regulations may limit BOK Financial's ability to grow and expand into new markets and businesses. Additionally, under the Community Reinvestment Act, BOK Financial is required to provide services in traditionally underserved areas. BOK Financial's ability to make acquisitions and engage in new business may be limited by these requirements. The Federal Deposit Insurance Corporation Improvement Act of 1991 and the Bank Holding Company Act of 1956, and various regulations of regulatory authorities, require us to maintain specified capital ratios. Any failure to maintain required capital ratios would limit the growth potential of BOK Financial's business. 11 Under a long-standing policy of the Board of Governors of the Federal Reserve System, a bank holding company is expected to act as a source of financial strength for its subsidiary banks. As a result of that policy, BOK Financial may be required to commit financial and other resources to its subsidiary banks in circumstances where we might not otherwise do so. The trend toward extensive regulation is likely to continue in the future. Laws, regulations or policies currently affecting us and BOK Financial's subsidiaries may change at any time. Regulatory authorities may also change their interpretation of these statutes and regulations. Therefore, BOK Financial's business may be adversely affected by any future changes in laws, regulations, policies or interpretations. STATUTORY RESTRICTIONS ON SUBSIDIARY DIVIDENDS AND OTHER DISTRIBUTIONS AND DEBTS OF BOK FINANCIAL'S SUBSIDIARIES COULD LIMIT AMOUNTS BOK FINANCIAL'S SUBSIDIARIES MAY PAY TO BOK FINANCIAL. BOK Financial is a bank holding company, and a substantial portion of BOK Financial's cash flow typically comes from dividends that BOK Financial's bank and nonbank subsidiaries pay to BOK Financial. Various statutory provisions restrict the amount of dividends BOK Financial's subsidiaries can pay to BOK Financial without regulatory approval. Management also developed, and the BOK Financial board of directors approved, an internal capital policy that is more restrictive than the regulatory capital standards. In addition, if any of BOK Financial's subsidiaries liquidates, that subsidiary's creditors will be entitled to receive distributions from the assets of that subsidiary to satisfy their claims against it before BOK Financial, as a holder of an equity interest in the subsidiary, will be entitled to receive any of the assets of the subsidiary. If, however, BOK Financial is a creditor of the subsidiary with recognized claims against it, BOK Financial will be in the same position as other creditors. ALTHOUGH PUBLICLY TRADED, BOK FINANCIAL'S COMMON STOCK HAS SUBSTANTIALLY LESS LIQUIDITY THAN THE AVERAGE TRADING MARKET FOR A STOCK QUOTED ON THE NASDAQ NATIONAL MARKET SYSTEM. A relatively small fraction of BOK Financial's outstanding common stock is actively traded. The risks of low liquidity include increased volatility of the price of BOK Financial's common stock. Low liquidity may also limit holders of BOK Financial's common stock in their ability to sell or transfer BOK Financial's shares at the price, time and quantity desired. BOK FINANCIAL'S PRINCIPAL SHAREHOLDER CONTROLS A MAJORITY OF BOK FINANCIAL'S COMMON STOCK. Mr. George B. Kaiser owns a majority of the outstanding shares of BOK Financial's common stock. Mr. Kaiser is able to elect all of BOK Financial's directors and effectively control the vote on all matters submitted to a vote of BOK Financial's common shareholders. Mr. Kaiser's ability to prevent an unsolicited bid for BOK Financial or any other change in control could have an adverse effect on the market price for BOK Financial's common stock. A substantial majority of BOK Financial's directors are not officers or employees of BOK Financial or any of its affiliates. However, because of Mr. Kaiser's control over the election of BOK Financial's directors, he could change the composition of BOK Financial's Board of Directors so that it would not have a majority of outside directors. POSSIBLE FUTURE SALES OF SHARES BY BOK FINANCIAL'S PRINCIPAL SHAREHOLDER COULD ADVERSELY AFFECT THE MARKET PRICE OF BOK FINANCIAL'S COMMON STOCK. Mr. Kaiser has the right to sell shares of BOK Financial's common stock in compliance with the federal securities laws at any time, or from time to time. The federal securities laws will be the only 12 restrictions on Mr. Kaiser's ability to sell. Because of his current control of BOK Financial, Mr. Kaiser could sell large amounts of his shares of BOK Financial's common stock by causing BOK Financial to file a registration statement that would allow him to sell shares more easily. In addition, Mr. Kaiser could sell his shares of BOK Financial's common stock without registration under Rule 144 of the Securities Act. Although BOK Financial can make no predictions as to the effect, if any, that such sales would have on the market price of BOK Financial's common stock, sales of substantial amounts of BOK Financial's common stock, or the perception that such sales could occur, would adversely affect market prices. If Mr. Kaiser sells or transfers his shares of BOK Financial's common stock as a block, another person or entity could become BOK Financial's controlling shareholder. ITEM 1B. UNRESOLVED STAFF COMMENTS None. ITEM 2 - PROPERTIES BOK Financial and its subsidiaries own and lease improved real estate that is carried at $123 million, net of depreciation and amortization. The Company's principal offices are located in leased premises in the Bank of Oklahoma Tower, Tulsa, Oklahoma. Banking offices are primarily located in Tulsa and Oklahoma City, Oklahoma, Dallas-Forth Worth and Houston, Texas, Albuquerque, New Mexico, Denver, Colorado, and Phoenix, Arizona. Operations facilities are located in Tulsa, Oklahoma, Dallas, Texas, and Albuquerque, New Mexico. The Company's facilities are suitable for their respective uses and present needs. The information set forth in Notes 6 and 15 of the 2005 Annual Report provides further discussion related to properties and is incorporated herein by reference. ITEM 3 - LEGAL PROCEEDINGS The information set forth in Note 15 of the 2005 Annual Report is incorporated herein by reference. ITEM 4 - SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS No matters were submitted to a vote of security holders, through the solicitation of proxies or otherwise, during the three months ended December 31, 2005. 13 PART II ITEM 5 - MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES BOK Financial's $.00006 par value common stock is traded on the Nasdaq Stock Market under the symbol BOKF. As of March 1, 2006, common shareholders of record numbered 1,143 with 66,955,508 shares outstanding. The highest and lowest closing bid price for shares of BOK Financial common stock follows: First Second Third Fourth --------------- -------------- -------------- --------------- 2005: Low $39.79 $40.09 $45.26 $43.54 High 48.97 46.02 49.30 48.53 2004: Low $37.48 $37.29 $38.95 $44.33 High 39.91 41.20 45.45 49.18 The Company had a stock repurchase plan that was initially authorized by the Company's board of directors on February 24, 1998 and amended on May 25, 1999. Under the terms of that plan, the Company could repurchase up to 800,000 shares of its common stock. As of March 31, 2005, the Company had repurchased 638,642 shares under that plan. On April 26, 2005, the Company's board of directors terminated this authorization and replaced it with a new stock repurchase plan authorizing the Company to repurchase up to two million shares of the Company's common stock. The specific timing and amount of shares repurchased will vary based upon market conditions, securities law limitations and other factors. Repurchases may be made over time in open market or privately negotiated transactions. The repurchase program may be suspended or discontinued at any time without prior notice. As of December 31, 2005, the Company had repurchased 30,000 shares under the new plan for $1.3 million. During the second quarter of 2005, the board of directors approved the Company's first quarterly cash dividend of $0.10 per common share. The quarterly cash dividend replaced the annual dividend historically paid in shares of common stock. Concurrent with the first quarterly cash dividend, holders of the Company's convertible preferred stock exercised their conversion rights. All of the Series A Preferred Stock was converted into 6,920,666 common shares. For the year ended December 31, 2005, the Company's payout ratio of common dividends to earnings was 9.91%. 14 The following table provides information with respect to purchases made by or on behalf of the Company or any "affiliated purchaser" (as defined in Rule 10b-18(a)(3) under the Securities Exchange Act of 1934), of the Company's common stock during the three months ended December 31, 2005. - ---------------------------------------- ------------------- ----------------- ------------------------ --------------------- Total Number of Shares Maximum Number of Purchased as Part of Shares that May Yet Total Number of Average Price Publicly Announced Be Purchased Under Period Shares Purchased (1) Paid per Share Plans or Programs the Plans - ---------------------------------------- ------------------- ----------------- ------------------------ --------------------- October 1, 2005 to October 31, 2005 13,552 $45.63 - 1,970,000 - ---------------------------------------- ------------------- ----------------- ------------------------ --------------------- November 1, 2005 to November 30, 2005 16,989 $47.14 - 1,970,000 - ---------------------------------------- ------------------- ----------------- ------------------------ --------------------- December 1, 2005 to December 31, 2005 43,960 $46.64 - 1,970,000 - ---------------------------------------- ------------------- ----------------- ------------------------ --------------------- Total 74,501 - - ---------------------------------------- ------------------- ----------------- ------------------------ --------------------- (1) The Company routinely repurchases mature shares from employees to cover the exercise price and taxes in connection with employee stock option exercises. BOK Financial entered into a limited price guarantee on a portion of the shares issued in the Bank of Tanglewood acquisition on October 25, 2002. Additional discussion of this price guarantee is incorporated by reference to information set forth under the "Off-Balance Sheet Arrangements" heading within the Management's Discussion and Analysis section and in Note 16 of the 2005 Annual Report. The information set forth under the headings "Table 1 - Consolidated Selected Financial Data," "Table 5 - Selected Quarterly Financial Data," "Borrowings and Capital," and Note 16 of the 2005 Annual Report is incorporated herein by reference. ITEM 6 - SELECTED FINANCIAL DATA The information set forth under the heading "Table 1 - Consolidated Selected Financial Data" of the 2005 Annual Report is incorporated herein by reference. ITEM 7 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS The information set forth under the headings "Management's Discussion and Analysis," "Annual Financial Summary - Unaudited" and "Quarterly Financial Summary - Unaudited" of the 2005 Annual Report is incorporated herein by reference. ITEM 7A - QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK BOK Financial is subject to market risk primarily through the effect of changes in interest rates on both its assets held for purposes other than trading and trading assets. The effects of other changes, such as foreign exchange rates, commodity prices or equity prices do not pose significant market risk to BOK Financial. BOK Financial has no material investments in assets that are affected by changes in foreign exchange rates or equity prices. Energy derivative contracts, which are affected by changes in commodity prices, are matched against offsetting contracts. Additional discussion of this type of market risk is set forth under the heading "Market Risk" within the Management's Discussion and Analysis section of the 2005 Annual Report and is incorporated herein by reference. BOK Financial is also exposed to market risk related to a stock price guarantee agreement made in connection with the Bank of Tanglewood acquisition. Additional information regarding this risk is set 15 forth under the "Off-Balance Sheet Arrangements" heading within the Management's Discussion and Analysis section and in Note 16 of the 2005 Annual Report. Additional information regarding market risk is set forth under the "Loans" heading within the Management's Discussion and Analysis section of the 2005 Annual Report and is incorporated herein by reference, including disclosures of loan concentrations by primary industry of the borrower and geographic concentrations of the loan portfolio. The information set forth under the "Deposits" heading within the Management's Discussion and Analysis section of the 2005 Annual Report is also incorporated herein by reference, including geographic distribution of deposit accounts. ITEM 8 - FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA The following information set forth in the 2005 Annual Report is incorporated herein by reference: the Consolidated Financial Statements and Notes to Consolidated Financial Statements of BOK Financial Corporation, together with the report thereon of Ernst & Young LLP dated March 10, 2006, which appears on page 37 of the 2005 Annual Report, and the Selected Quarterly Financial Data in Table 5. ITEM 9 - CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE None. ITEM 9A - CONTROLS AND PROCEDURES As of the end of the period covered by this report and pursuant to Rule 13a-15 of the Securities Exchange Act of 1934 (the "Exchange Act"), the Company's management, including the Chief Executive Officer and Chief Financial Officer, conducted an evaluation of the effectiveness and design of the Company's disclosure controls and procedures (as that term is defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act). Based upon that evaluation, the Company's Chief Executive Officer and Chief Financial Officer concluded, as of the end of the period covered by this report, that the Company's disclosure controls and procedures were effective in recording, processing, summarizing and reporting information required to be disclosed by the Company, within the time periods specified in the Securities and Exchange Commission's rules and forms. In addition and as of the end of the period covered by this report, there have been no changes in internal control over financial reporting (as defined in Rule 13a-15(f) and 15d-15(f) of the Exchange Act) during the Company's fourth fiscal quarter that have materially affected, or are reasonably likely to materially affect, the internal control over financial reporting. The Report of Management on Financial Statements and Management's Report on Internal Control over Financial Reporting appear on Page 36 of the 2005 Annual Report and are incorporated herein by reference. The independent registered public accounting firm, Ernst & Young, LLP, has audited the financial statements included in the 2005 Annual Report and has issued an audit report on management's assessment of the internal control over financial reporting, which appears on Page 38 of the 2005 Annual Report and is incorporated herein by reference. ITEM 9B - OTHER INFORMATION None. 16 PART III ITEM 10 - DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT The information set forth under the headings "Election of Directors," "Executive Compensation" and "Risk Oversight and Audit Committee" in BOK Financial's 2006 Annual Proxy Statement is incorporated herein by reference. The Company has a Code of Ethics which is applicable to all Directors, officers and employees of the Company, including the Chief Executive Officer and the Chief Financial Officer, the principal executive officer and principal financial and accounting officer, respectively. A copy of the Code of Ethics will be provided without charge to any person who requests it by writing to the Company's headquarters at Bank of Oklahoma Tower, P.O. Box 2300, Tulsa, Oklahoma 74192 or telephoning the Chief Auditor at (918) 588-6000. The Company will also make available amendments to or waivers from its Code of Ethics applicable to Directors or executive officers, including the Chief Executive Officer and the Chief Financial Officer, in accordance with all applicable laws and regulations. ITEM 11 - EXECUTIVE COMPENSATION The information set forth under the heading "Executive Compensation" in BOK Financial's 2006 Annual Proxy Statement is incorporated herein by reference. ITEM 12 - SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS The information set forth under the headings "Security Ownership of Certain Beneficial Owners and Management" and "Election of Directors" in BOK Financial's 2006 Annual Proxy Statement is incorporated herein by reference. The information set forth under the heading "Equity Compensation Plan Information" in BOK Financial's 2006 Annual Proxy Statement is incorporated herein by reference. ITEM 13 - CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS The information set forth under the heading "Certain Transactions" in BOK Financial's 2006 Annual Proxy Statement is incorporated herein by reference. The information set forth under Note 14 of the 2005 Annual Report is incorporated herein by reference. ITEM 14 - PRINCIPAL ACCOUNTANT FEES AND SERVICES The information set forth under the heading "Principal Accountant Fees and Services" in BOK Financial's 2006 Annual Proxy Statement is incorporated herein by reference. 17 PART IV ITEM 15 - EXHIBITS, FINANCIAL STATEMENT SCHEDULES (a) (1) Financial Statements The following financial statements and reports are incorporated by reference from the 2005 Annual Report: Exhibit 13 2005 Annual Report Description Page Number Consolidated Selected Financial Data 1 Selected Quarterly Financial Data 13 Report of Management on Financial Statements and Management's Report on Internal Control over Financial Reporting 36 Reports of Independent Registered Public Accounting Firm 37 - 38 Consolidated Statements of Earnings for the years ended December 31, 2005, 2004 and 2003 39 Consolidated Balance Sheets as of December 31, 2005 and 2004 40 Consolidated Statements of Cash Flows for the years ended December 31, 2005, 2004 and 2003 41 Consolidated Statements of Changes in Shareholders' Equity for the years ended December 31, 2005, 2004 and 2003 42 - 43 Notes to Consolidated Financial Statements 44 - 75 Annual Financial Summary - Unaudited 76 - 77 Quarterly Financial Summary - Unaudited 78 - 79 (a) (2) Financial Statement Schedules The schedules to the consolidated financial statements required by Regulation S-X are not required under the related instructions or are inapplicable and are therefore omitted. 18 (a) (3) Exhibits Exhibit Number Description of Exhibit 3.0 The Articles of Incorporation of BOK Financial, incorporated by reference to (i) Amended and Restated Certificate of Incorporation of BOK Financial filed with the Oklahoma Secretary of State on May 28, 1991, filed as Exhibit 3.0 to S-1 Registration Statement No. 33-90450, and (ii) Amendment attached as Exhibit A to Information Statement and Prospectus Supplement filed November 20, 1991. 3.1 Bylaws of BOK Financial, incorporated by reference to Exhibit 3.1 of S-1 Registration Statement No. 33-90450. 4.0 The rights of the holders of the Common Stock and Preferred Stock of BOK Financial are set forth in its Certificate of Incorporation. 10.0 Purchase and Sale Agreement dated October 25, 1990, among BOK Financial, Kaiser, and the FDIC, incorporated by reference to Exhibit 2.0 of S-1 Registration Statement No. 33-90450. 10.1 Amendment to Purchase and Sale Agreement effective March 29, 1991, among BOK Financial, Kaiser, and the FDIC, incorporated by reference to Exhibit 2.2 of S-1 Registration Statement No. 33-90450 10.2 Letter agreement dated April 12, 1991, among BOK Financial, Kaiser, and the FDIC, incorporated by reference to Exhibit 2.3 of S-1 Registration Statement No. 33-90450. 10.3 Second Amendment to Purchase and Sale Agreement effective April 15, 1991, among BOK Financial, Kaiser, and the FDIC, incorporated by reference to Exhibit 2.4 of S-1 Registration Statement No. 33-90450. 10.4 Employment and Compensation Agreements. 10.4(a) Employment Agreement between BOK Financial and Stanley A. Lybarger, incorporated by reference to Exhibit 10.4(a) of Form 10-K for the fiscal year ended December 31, 1991. 10.4(b) Amendment to 1991 Employment Agreement between BOK Financial and Stanley A. Lybarger, incorporated by reference to Exhibit 10.4(b) of Form 10-K for the fiscal year ended December 31, 2001. 10.4(c) Amended and Restated Deferred Compensation Agreement (Amended as of September 1, 2003) between Stanley A. Lybarger and BOK Financial Corporation, incorporated by reference to Exhibit 10.4 (c) of Form 10-Q for the quarter ended September 30, 2003. 10.4 (d) 409A Deferred Compensation Agreement between Stanley A. Lybarger and BOK Financial Corporation dated December 31, 2004, incorporated by reference to Exhibit 10.4 (d) of Form 8-K filed on January 5, 2005. 10.4 (e) Guaranty by George B. Kaiser in favor of Stanley A. Lybarger dated March 7, 2005, incorporated by reference to Exhibit 10.4 (e) of Form 10-K for the fiscal year ended December 31, 2004. 19 10.4.1(a) Employee Agreement between BOK Financial and V. Burns Hargis, incorporated by reference to Exhibit 10.4.1(a) of Form 10-K for the fiscal year ended December 31, 2002. 10.4.1(b) Amendment to Employee Agreement between BOK Financial and V. Burns Hargis, incorporated by reference to Exhibit 10.4.1(b) of Form 10-K for the fiscal year ended December 31, 2002. 10.4.2 Amended and Restated Deferred Compensation Agreement (Amended as of December 1, 2003) between Steven G. Bradshaw and BOK Financial Corporation, incorporated by reference to Exhibit 10.4.2 of Form 10-K for the fiscal year ended December 31, 2003. 10.4.2 (a) 409A Deferred Compensation Agreement between Steven G. Bradshaw and BOK Financial Corporation dated December 31, 2004, incorporated by reference to Exhibit 10.4.2 (a) of Form 8-K filed on January 5, 2005. 10.4.2 (b) Employment Agreement between BOK Financial and Steven G. Bradshaw dated September 29, 2003, incorporated by reference to Exhibit 10.4.2 (b) of Form 10-K for the fiscal year ended December 31, 2004. 10.4.3 Amended and Restated Deferred Compensation Agreement (Amended as of December 1, 2003) between William Jeffrey Pickryl and BOK Financial Corporation, incorporated by reference to Exhibit 10.4.3 of Form 10-K for the fiscal year ended December 31, 2003. 10.4.3 (a) 409A Deferred Compensation Agreement between William Jeffrey Pickryl and BOK Financial Corporation dated December 31, 2004, incorporated by reference to Exhibit 10.4.3 (a) of Form 8-K filed on January 5, 2005. 10.4.3 (b) Employment Agreement between BOK Financial and W. Jeffrey Pickryl dated September 29, 2003, incorporated by reference to Exhibit 10.4.3 (b) of Form 10-K for the fiscal year ended December 31, 2004. 10.4.3 (c) Amendment to Employment Agreement between BOK Financial and W. Jeffrey Pickryl dated August 30, 2004, incorporated by reference to Exhibit 10.4.3 (c) of Form 10-K for the fiscal year ended December 31, 2004. 10.4.3 (d) Supplemental Executive Income Agreement dated December 20, 2005 between W. Jeffrey Pickryl and BOK Financial Corporation, incorporated by reference to Exhibit 99 (a) of Form 8-K filed on December 22, 2005. 10.4.4 Amended and Restated Employment Agreement (Amended as of June 14, 2002) among First National Bank of Park Cities, BOK Financial Corporation and C. Fred Ball, Jr., incorporated by reference to Exhibit 10.4.4 of Form 10-K for the fiscal year ended December 31, 2003. 10.4.5 409A Deferred Compensation Agreement between Daniel H. Ellinor and BOK Financial Corporation dated December 31, 2004, incorporated by reference to Exhibit 10.4.5 of Form 8-K filed on January 5, 2005. 10.4.5 (a) Employment Agreement between BOK Financial and Dan H. Ellinor dated August 29, 2003, incorporated by reference to Exhibit 10.4.5 (a) of Form 10-K for the fiscal year ended December 31, 2004. 20 10.4.5 (b) Deferred Compensation Agreement dated November 28, 2003 between Daniel H. Ellinor and BOK Financial Corporation, incorporated by reference to Exhibit 10.4.5 (b) of Form 10-K for the fiscal year ended December 31, 2004. 10.4.6 409A Deferred Compensation Agreement between Mark W. Funke and BOK Financial Corporation dated December 31, 2004, incorporated by reference to Exhibit 10.4.6 of Form 8-K filed on January 5, 2005. 10.4.6 (a) Amended and Restated Deferred Compensation Agreement (Amended as of December 1, 2003) between Mark W. Funke and BOK Financial Corporation, incorporated by reference to Exhibit 10.4.6 (a) of Form 10-K for the fiscal year ended December 31, 2004. 10.4.7 409A Deferred Compensation Agreement between Steven E. Nell and BOK Financial Corporation dated December 31, 2004, incorporated by reference to Exhibit 10.4.7 of Form 8-K filed on January 5, 2005. 10.4.7 (a) Amended and Restated Deferred Compensation Agreement (Amended as of December 1, 2003) between Steven E. Nell and BOK Financial Corporation, incorporated by reference to Exhibit 10.4.7 (a) of Form 10-K for the fiscal year ended December 31, 2004. 10.4.8 Employment Agreement dated August 1, 2005 between BOK Financial Corporation and Donald T. Parker, incorporated by reference to Exhibit 99 (a) of Form 8-K filed on February 1, 2006. 10.5 Director indemnification agreement dated June 30, 1987, between BOk and Kaiser, incorporated by reference to Exhibit 10.5 of S-1 Registration Statement No. 33-90450. Substantially similar director indemnification agreements were executed between BOk and the following: Date of Agreement James E. Barnes June 30, 1987 William H. Bell June 30, 1987 James S. Boese June 30, 1987 Dennis L. Brand June 30, 1987 Chester E. Cadieux June 30, 1987 William B. Cleary June 30, 1987 Glenn A. Cox June 30, 1987 William E. Durrett June 30, 1987 Leonard J. Eaton, Jr. June 30, 1987 William B. Fader December 5, 1990 Gregory J. Flanagan June 30, 1987 Jerry L. Goodman June 30, 1987 David A. Hentschel July 7, 1987 Philip N. Hughes July 8, 1987 Thomas J. Hughes, III June 30, 1987 William G. Kerr June 30, 1987 Philip C. Lauinger, Jr. June 30, 1987 Stanley A. Lybarger December 5, 1990 Patricia McGee Maino June 30, 1987 Robert L. Parker, Sr. June 30, 1987 James A. Robinson June 30, 1987 William P. Sweich June 30, 1987 21 10.6 Capitalization and Stock Purchase Agreement dated May 20, 1991, between BOK Financial and Kaiser, incorporated by reference to Exhibit 10.6 of S-1 Registration Statement No. 33-90450. 10.7.3 BOK Financial Corporation 1994 Stock Option Plan, incorporated by reference to Exhibit 4.0 of S-8 Registration Statement No. 33-79834. 10.7.4 BOK Financial Corporation 1994 Stock Option Plan (Typographical Error Corrected January 16, 1995), incorporated by reference to Exhibit 10.7.4 of Form 10-K for the fiscal year ended December 31, 1994. 10.7.5 BOK Financial Corporation 1997 Stock Option Plan, incorporated by reference to Exhibit 4.0 of S-8 Registration Statement No. 333-32649. 10.7.6 BOK Financial Corporation 2000 Stock Option Plan, incorporated by reference to Exhibit 4.0 of S-8 Registration Statement No. 333-93957. 10.7.7 BOK Financial Corporation 2001 Stock Option Plan, incorporated by reference to Exhibit 4.0 of S-8 Registration Statement No. 333-62578. 10.7.8 BOK Financial Corporation Directors' Stock Compensation Plan, incorporated by reference to Exhibit 4.0 of S-8 Registration Statement No. 33-79836. 10.7.9 Bank of Oklahoma Thrift Plan (Amended and Restated Effective as of January 1, 1995), incorporated by reference to Exhibit 10.7.6 of Form 10-K for the year ended December 31, 1994. 10.7.10 Trust Agreement for the Bank of Oklahoma Thrift Plan (December 30, 1994), incorporated by reference to Exhibit 10.7.7 of Form 10-K for the year ended December 31, 1994. 10.7.11 BOK Financial Corporation 2003 Stock Option Plan, incorporated by reference to Exhibit 4.0 of S-8 Registration Statement No. 333-106531. 10.7.12 BOK Financial Corporation 2003 Executive Incentive Plan, incorporated by reference to Exhibit 4.0 of S-8 Registration Statement No. 333-106530. 10.8 Lease Agreement between One Williams Center Co. and National Bank of Tulsa (predecessor to BOk) dated June 18, 1974, incorporated by reference to Exhibit 10.9 of S-1 Registration Statement No. 33-90450. 10.9 Lease Agreement between Security Capital Real Estate Fund and BOk dated January 1, 1988, incorporated by reference to Exhibit 10.10 of S-1 Registration Statement No. 33-90450. 10.10Asset Purchase Agreement (OREO and other assets) between BOk and Phi-Lea-Em Corporation dated April 30, 1991, incorporated by reference to Exhibit 10.11 of S-1 Registration Statement No. 33-90450. 10.11Asset Purchase Agreement (Tanker Assets) between BOk and Green River Exploration Company dated April 30, 1991, incorporated by reference to Exhibit 10.12 of S-1 Registration Statement No. 33-90450. 22 10.12Asset Purchase Agreement (Recovery Rights) between BOk and Kaiser dated April 30, 1991, incorporated by reference to Exhibit 10.13 of S-1 Registration Statement No. 33-90450. 10.13Purchase and Assumption Agreement dated August 7, 1992 among First Gibraltar Bank, FSB, Fourth Financial Corporation and BOk, as amended, incorporated by reference to Exhibit 10.14 of Form 10-K for the fiscal year ended December 31, 1992. 10.13.1 Allocation Agreement dated August 7, 1992 between BOk and Fourth Financial Corporation, incorporated by reference to Exhibit 10.14.1 of Form 10-K for the fiscal year ended December 31, 1992. 10.14Merger Agreement among BOK Financial, BOKF Merger Corporation Number Two, Brookside Bancshares, Inc., The Shareholders of Brookside Bancshares, Inc. and Brookside State Bank dated December 22, 1992, as amended, incorporated by reference to Exhibit 10.15 of Form 10-K for the fiscal year ended December 31, 1992. 10.14.1 Agreement to Merge between BOk and Brookside State Bank dated January 27, 1993, incorporated by reference to Exhibit 10.15.1 of Form 10-K for the fiscal year ended December 31, 1992. 10.15Merger Agreement among BOK Financial, BOKF Merger Corporation Number Three, Sand Springs Bancshares, Inc., The Shareholders of Sand Springs Bancshares, Inc. and Sand Springs State Bank dated December 22, 1992, as amended, incorporated by reference to Exhibit 10.16 of Form 10-K for the fiscal year ended December 31, 1992. 10.15.1 Agreement to Merge between BOk and Sand Springs State Bank dated January 27, 1993, incorporated by reference to Exhibit 10.16.1 of Form 10-K for the fiscal year ended December 31, 1992. 10.16Partnership Agreement between Kaiser-Francis Oil Company and BOK Financial dated December 1, 1992, incorporated by reference to Exhibit 10.16 of Form 10-K for the fiscal year ended December 31, 1993. 10.16.1 Amendment to Partnership Agreement between Kaiser-Francis Oil Company and BOK Financial dated May 17, 1993, incorporated by reference to Exhibit 10.16.1 of Form 10-K for the fiscal year ended December 31, 1993. 10.17Purchase and Assumption Agreement between BOk and FDIC, Receiver of Heartland Federal Savings and Loan Association dated October 9, 1993, incorporated by reference to Exhibit 10.17 of Form 10-K for the fiscal year ended December 31, 1993. 10.18Merger Agreement among BOk, Plaza National Bank and The Shareholders of Plaza National Bank dated December 20, 1993, incorporated by reference to Exhibit 10.18 of Form 10-K for the fiscal year ended December 31, 1993. 10.18.1 Amendment to Merger Agreement among BOk, Plaza National Bank and The Shareholders of Plaza National Bank dated January 14, 1994, incorporated by reference to Exhibit 10.18.1 of Form 10-K for the fiscal year ended December 31, 1993. 23 10.19Stock Purchase Agreement between Texas Commerce Bank, National Association and BOk dated March 11, 1994, incorporated by reference to Exhibit 10.19 of Form 10-K for the fiscal year ended December 31, 1993. 10.20Merger Agreement among BOK Financial Corporation, BOKF Merger Corporation Number Four, Citizens Holding Company and others dated May 11, 1994, incorporated by reference to Exhibit 10.20 of Form 10-K for the fiscal year ended December 31, 1994. 10.21Stock Purchase and Merger Agreement among Northwest Bank of Enid, BOk and The Shareholders of Northwest Bank of Enid effective as of May 16, 1994, incorporated by reference to Exhibit 10.21 of Form 10-K for the fiscal year ended December 31, 1994. 10.22Agreement and Plan of Merger among BOK Financial Corporation, BOKF Merger Corporation Number Five and Park Cities Bancshares, Inc. dated October 3, 1996, incorporated by reference to Exhibit C of S-4 Registration Statement No. 333-16337. 10.23Agreement and Plan of Merger among BOK Financial Corporation and First TexCorp., Inc. dated December 18, 1996, incorporated by reference to Exhibit 10.24 of S-4 Registration Statement No. 333-16337. 10.24Purchase and Assumption Agreement between Bank of America National Trust and Savings Association and BOK Financial Corporation dated July 27, 1998. 10.25Merger Agreement among BOK Financial Corporation, BOKF Merger Corporation No. Seven, First Bancshares of Muskogee, Inc., First National Bank and Trust Company of Muskogee, and Certain Shareholders of First Bancshares of Muskogee, Inc. dated December 30, 1998. 10.26Merger Agreement among BOK Financial Corporation, BOKF Merger Corporation Number Nine, and Chaparral Bancshares, Inc. dated February 19, 1999. 10.27Merger Agreement among BOK Financial Corporation, Park Cities Bancshares, Inc., Mid-Cities Bancshares, Inc. and Mid-Cities National Bank dated February 24, 1999. 10.28Merger Agreement among BOK Financial Corporation, Park Cities Bancshares, Inc., PC Interim State Bank, Swiss Avenue State Bank and Certain Shareholders of Swiss Avenue State Bank dated March 4, 1999. 10.29Merger Agreement among BOK Financial Corporation, Park Cities Bancshares, Inc. and CNBT Bancshares, Inc. dated August 18, 2000, incorporated by reference to Exhibit 10.29 of Form 10-K for the fiscal year ended December 31, 2000. 10.30Merger Agreement among BOK Financial Corporation, Bank of Tanglewood, N.A. and TW Interim Bank dated October 25, 2002, incorporated by reference to Exhibit 2.0 of S-4 Registration Statement No. 333-98685. 24 10.31Remote Outsourcing Services Agreement between Bank of Oklahoma, N.A. and Alltel Information Services, Inc., dated September 1, 2002, incorporated by reference to Exhibit 10.30 of the September 30, 2002 10-Q filed on November 13, 2002. 10.32Merger Agreement among BOK Financial Corporation, BOKF Merger Corporation Number Eleven, Colorado Funding Company, Colorado State Bank and Trust and Certain Shareholders of Colorado Funding Company dated July 8, 2003, incorporated by reference to Exhibit 10.32 of Form 10-K for the fiscal year ended December 31, 2003. 10.33Merger Agreement between BOK Financial Corporation, BOKF Merger Corporation Number Eight, Valley Commerce Bank, and Valley Commerce Bancorp, Ltd. dated December 20, 2004, incorporated by reference to Exhibit 10.1 of the Form 8-K filed on December 22, 2004. 13.0 Annual Report to Shareholders for the fiscal year ended December 31, 2005. Such report, except for those portions thereof which are expressly incorporated by reference in this filing, is furnished for the information of the Commission and is not deemed to be "filed" as part of this Annual Report on Form 10-K. 21.0 Subsidiaries of BOK Financial, filed herewith. 23.0 Consent of independent registered public accounting firm - Ernst & Young LLP, filed herewith. 31.1 Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith. 31.2 Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith. 32 Certification of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, filed herewith. 99.0 Additional Exhibits. 99 (a) Credit Agreement dated December 2, 2005 between BOK Financial Corporation and participating lenders, incorporated by reference to Exhibit 99 (a) of Form 8-K filed December 6, 2005. 99.1 Undertakings incorporated by reference into S-8 Registration Statement No. 33-44121 for Bank of Oklahoma Master Thrift Plan and Trust, incorporated by reference to Exhibit 99.1 of Form 10-K for the fiscal year ended December 31, 1993. 99.5 Undertakings incorporated by reference into S-8 Registration Statement No. 33-79834 for BOK Financial Corporation 1994 Stock Option Plan, incorporated by reference to Exhibit 99.5 of Form 10-K for the fiscal year ended December 31, 1994. 25 99.6 Undertakings incorporated by reference into S-8 Registration Statement No. 33-79836 for BOK Financial Corporation Directors' Stock Compensation Plan, incorporated by reference to Exhibit 99.6 of Form 10-K for the fiscal year ended December 31, 1994. 99.7 Undertakings incorporated by reference into S-8 Registration Statement No. 333-32649 for BOK Financial Corporation 1997 Stock Option Plan, Incorporated by reference to Exhibit 99.7 of Form 10-K for the fiscal year ended December 31, 1997. 99.8 Undertakings incorporated by reference into S-8 Registration Statement No. 333-93957 for BOK Financial Corporation 2000 Stock Option Plan, Incorporated by reference to Exhibit 99.8 of Form 10-K for the fiscal year ended December 31, 1999. 99.9 Undertakings incorporated by reference into S-8 Registration Statement No. 333-40280 for BOK Financial Corporation Thrift Plan for Hourly Employees, Incorporated by reference to Exhibit 99.9 of Form 10-K for the fiscal year ended December 31, 2000. (b) Exhibits See Item 15 (a) (3) above. (c) Financial Statement Schedules See Item 15 (a) (2) above. 26 SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. BOK FINANCIAL CORPORATION DATE: March 15, 2006 BY: /s/ George B. Kaiser ------------------------------ ------------------------------------- George B. Kaiser Chairman of the Board of Directors Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below on March 15, 2006, by the following persons on behalf of the registrant and in the capacities indicated. OFFICERS /s/ George B. Kaiser /s/ Stanley A. Lybarger - ------------------------------------- ------------------------------------- George B. Kaiser Stanley A. Lybarger Chairman of the Board of Directors Director, President and Chief Executive Officer /s/ Steven E. Nell /s/ John C. Morrow - ------------------------------------- ------------------------------------- Steven E. Nell John C. Morrow Executive Vice President and Senior Vice President and Director of Chief Financial Officer Financial Accounting and Reporting DIRECTORS /s/ Gregory S. Allen /s/ V. Burns Hargis - ------------------------------------- ------------------------------------- Gregory S. Allen V. Burns Hargis /s/ C. F. Ball, Jr. /s/ E. Carey Joullian, IV - ------------------------------------- ------------------------------------- C. Fred Ball, Jr. E. Carey Joullian, IV /s/ Sharon J. Bell /s/ Judith Z. Kishner - ------------------------------------- ------------------------------------- Sharon J. Bell Judith Z. Kishner /s/ David L. Kyle - ------------------------------------- ------------------------------------- Peter C. Boylan, III David L. Kyle /s/ Chester Cadieux, III /s/ Robert J. LaFortune - ------------------------------------- ------------------------------------- Chester Cadieux, III Robert J. LaFortune /s/ Joseph E. Cappy /s/ Steven J. Malcolm - ------------------------------------- ------------------------------------- Joseph E. Cappy Steven J. Malcolm /s/ Paula Marshall-Chapman - ------------------------------------- ------------------------------------- William E. Durrett Paula Marshall-Chapman /s/ Robert G. Greer /s/ James A. Robinson - ------------------------------------- ------------------------------------- Robert G. Greer James A. Robinson /s/ David F. Griffin - ------------------------------------- David F. Griffin