NOTICE OF ANNUAL MEETING OF SHAREHOLDERS

April 19, 2006

      The annual meeting of the shareholders of Commerce Bancshares, Inc., will be held at the Sheraton Clayton Plaza Hotel, 7730 Bonhomme Avenue, Clayton, Missouri, in the Fleur De Lys Room (A) on April 19, 2006, at 9:30 a.m., for the following purposes:

      Shareholders of record at the close of business February 17, 2006, are entitled to notice of and to vote at the meeting.

      To be sure that your shares are represented at the meeting, please either complete and promptly mail the enclosed proxy card in the envelope provided for this purpose or vote through the telephone or Internet voting procedures described on the proxy card. If your shares are registered in the name of a bank or brokerage firm, telephone or Internet voting will be available to you only if offered by your bank or broker and such procedures are described on the voting form sent to you.

      Most shareholders can elect to view future proxy statements and annual reports over the Internet instead of receiving paper copies in the mail. Please refer to page 19 of the proxy statement and your proxy card for further information.

March 13, 2006

      It is important that your stock be represented at the meeting. You are urged to date, sign and return the enclosed proxy promptly or register your vote by telephone or through the Internet as described on the proxy card.

PROXY STATEMENT

COMMERCE BANCSHARES, INC.

Annual Meeting April 19, 2006

Solicitation

      The Board of Directors of Commerce Bancshares, Inc. (the Company), P.O. Box 419248, Kansas City, Missouri 64141-6248 solicits your proxy, and asks that you vote, sign, date and promptly mail the enclosed proxy card for use at the annual meeting of shareholders to be held at the Sheraton Clayton Plaza Hotel, 7730 Bonhomme Avenue, Clayton, Missouri, in the Fleur De Lys Room (A) on April 19, 2006, at 9:30 a.m. Most shareholders also have a choice of voting by using a toll-free telephone number or by voting over the Internet. Please refer to your proxy card or the information forwarded by your bank, broker or other holder of record to see which options are available to you.

      The cost of solicitation of proxies will be borne by the Company. In addition to solicitation by mail, proxies may be solicited personally or by telephone, telegram or via the Internet by regular employees of the Company. Morrow & Co. has been retained by the Company, at an estimated cost of $7,500 plus reasonable out-of-pocket expenses, to aid in the solicitation of proxies. Brokerage houses and other custodians, nominees and fiduciaries may be requested to forward soliciting material to their principals and the Company will reimburse them for the expense of doing so. This proxy statement and proxy will be first sent to security holders on or about March 13, 2006.

      If you wish, at any time before your proxy is voted, you may revoke it by written notice to the Company, or by delivery of a later-dated proxy (including a telephone or Internet vote), or by voting in person at the meeting.

      The shares represented by all properly executed proxies will be voted as directed by you. In the absence of direction, properly executed proxies will be voted in accordance with the recommendations of the Board as set forth below.

Voting Securities and Ownership Thereof by Certain Beneficial Owners and Management

      Only shares held of record at the close of business on February 17, 2006, are entitled to vote at the meeting, and at the close of business on said date there were outstanding 66,844,347 shares of common stock of the Company. Each holder of common stock is entitled to one vote for each share held. In the election of directors, abstentions and broker nonvotes will be considered solely for quorum purposes and are not counted for the election of directors. On all other matters presented for shareholder vote, abstentions will be treated as votes against such matters and broker nonvotes will be treated as not entitled to vote and have no effect on the outcome.

      (a) Under applicable Securities and Exchange Commission Rules, beneficial ownership of shares includes shares as to which a person has or shares voting power and/or investment power.

      As of December 31, 2005, the trust departments of the Company’s subsidiary banks beneficially owned 5,478,745 shares representing 8.1% of the Company’s outstanding common stock as of that date. Of those shares the subsidiary banks had (i) sole voting power over 3,807,674 shares; (ii) shared voting power over 1,562,564 shares; (iii) sole investment power over 3,792,621 shares and (iv) shared investment power over 1,683,550 shares. The Company has been advised by the subsidiary banks that the shares held by them and as to which they have sole voting power will be voted at the annual meeting for Proposals One and Two. Shares held in all other fiduciary accounts will be voted as specifically directed by the co-trustees and co-executors. Shares held in custodial accounts will be voted by the owners.

      (b) The following information pertains to the common stock of the Company beneficially owned, directly or indirectly, by all directors and nominees for director, the executive officers named in the Summary Compensation Table, and by all directors, nominees and executive officers of the Company as a group as of

December 31, 2005. This table also includes each person known to be the beneficial owner of 5% or more of the Company’s outstanding common stock. Such persons have sole voting and sole investment power as to such shares unless otherwise noted.

THE BOARD OF DIRECTORS

RECOMMENDS A VOTE FOR ALL THE

NOMINEES TO THE

CLASS OF 2009

PROPOSAL ONE

ELECTION OF DIRECTORS

      Under the Articles of Incorporation and the By-laws of the Company, the Board of Directors is divided into three classes, each as nearly equal as possible, and the Board is authorized to determine the number of persons constituting the board. The board has fixed the number of directors at twelve. Therefore, it is proposed that four directors be elected at the meeting to serve until the 2009 annual meeting (the 2009 Class), and until their successors shall be elected and qualified unless otherwise directed. The persons acting under the accompanying proxy intend to vote for the election of the nominees hereinafter named. Should any nominee become unable to accept nomination or election, it is intended, unless otherwise directed, that the person acting under the proxy will vote for the election of such other person as the Board of Directors of the Company may recommend. The four nominees for election as directors to the Class of 2009 who receive the greatest number of votes cast at the meeting, a quorum being present, shall become directors. Vacancies occurring in a class during a term are filled by the Board pursuant to the Company’s By-laws. There are no arrangements or understandings between any nominee and any other person pursuant to which the nominee was selected.

      The following information is provided with respect to each nominee:

      The following information is provided with respect to the directors who are continuing in office for the respective periods and until their successors are elected and qualified:

Audit Committee

      During 2005, Messrs. John R. Capps, James B. Hebenstreit, Thomas A. McDonnell, Benjamin F. Rassieur, III and Robert H. West (Chairman) served as members of the Audit Committee. It has been determined by the Board of Directors that all members of the Audit Committee are independent pursuant to the Sarbanes-Oxley Act of 2002, NASDAQ Rule 4200 and the Federal Deposit Insurance Corporation and Improvement Act of 1991. The role of the Audit Committee is to assist the Board of Directors in its oversight of the Company’s accounting, auditing and financial reporting processes. The Audit Committee is responsible for the compensation and appointment of the Company’s public accountants for the purpose of the examination and audit of the Company’s financial statements. The Audit Committee reviews the scope of audits to be performed by the independent public accountants and the internal auditing staff of the Company, and reviews annually the program of the internal auditing staff both with respect to audits performed in the prior year and scheduled audits for the ensuing year. The Audit Committee held six meetings during 2005. Complete information on the activity of the Audit Committee is provided in the Audit Committee Report on page 16. The Audit Committee operates pursuant to a Charter that was last amended and restated by the Board on January 30, 2004, a copy of which is attached to this Proxy Statement as Appendix A. The Audit Committee Charter may be viewed at www.commercebank.com/027.html.

Compensation and Human Resources Committee

      The Board of Directors has appointed a Compensation and Human Resources Committee consisting entirely of independent directors. The Compensation and Human Resources Committee is responsible for review and approval of executive and senior management performance and pay, adequacy and effectiveness of cash compensation plans, benefit plans, equity compensation plans and succession planning. Members of the Committee are also responsible for evaluating the performance of the Chief Executive Officer on an annual

basis and recommending to the board any compensation adjustments to his overall package based upon his overall performance level as it relates to the goals and objectives of the company. The Committee, in consultation with senior management, has oversight responsibility for regulatory compliance with respect to compensation matters, including overseeing the Company’s policies on structuring compensation programs to preserve tax deductibility. When required, the Committee will establish performance goals and certify that those performance goals have been attained for purposes of Section 162(m) of the Internal Revenue Code. Membership currently consists of Directors, Giorgio Balzer, Terry O. Meek, Andrew C. Taylor (Chairman) and Mary Ann Van Lokeren. The Committee held one meeting during 2005. The Compensation and Human Resources Committee Charter may be viewed at www.commercebank.com/027.html.

Committee on Governance/ Directors

      The Committee on Governance/ Directors consists entirely of independent directors appointed by the Board of Directors. Among its responsibilities are to identify individuals qualified to serve as Board members and to consider the re-nomination of incumbent directors. The Committee makes its recommendations to the Board of Directors. Pursuant to its Charter, the membership of the Committee is to consist of the Chairman of the Audit Committee, the Chairman of the Compensation and Human Resources Committee and such other members as the Board shall determine. The current members of the Committee are Messrs. James B. Hebenstreit (Chairman), Robert H. West, Andrew C. Taylor, W. Thomas Grant, II and Thomas A. McDonnell. The Committee met one time in 2005. The Committee on Governance/ Directors Charter may be viewed at www.commercebank.com/027.html.

      With respect to its recommendations of prospective candidates to the Board, the Committee may establish the criteria for director service and will consider, among other things, the independence of the candidates under NASDAQ standards and such experience and moral character as to create value to the Board, the Company and its shareholders. With respect to incumbent candidates, the Committee will also consider meeting attendance, meeting participation and ownership of Company stock. The criteria and selection process are not standardized and may vary from time to time. Relevant experience in business, government, the financial industry, education and other areas are prime measures for any nominee. The Committee will consider individuals for Board membership that are proposed by shareholders in accordance with the provisions of the Company’s By-laws. A description of those provisions can be found under “Shareholder Proposals and Nominations” on page 18. The Committee will consider individuals proposed by shareholders under the same criteria as all other individuals.

      By the end of February of each year, the Committee meets and makes its recommendations to the Board of its proposed slate of directors for the class of directors to be elected at the next annual meeting; the date, time and place of the annual meeting; and the matters to be placed on the agenda for the annual meeting. At its meeting on February 16, 2006, the Committee on Governance/ Directors determined its nominees for the Class of 2009. Mr. Giorgio Balzer, an incumbent director in the Class of 2006, had previously advised the Company of his retirement as Chairman and Chief Executive Officer of Generali USA Life Reassurance Company and, therefore, declined to stand for re-election. Mr. Balzer’s term as a Director of the Company will expire with the election of the Class of 2009 at the annual meeting of shareholders on April 19, 2006. Mr. Seth Leadbeater was nominated to replace Mr. Balzer as a member of the Class of 2009. The Committee noted that Mr. Leadbeater, if elected, will not be independent.

Corporate Governance and Director Independence

      The Company has adopted Governance Guidelines. Those guidelines and the charters for the Audit Committee, Compensation and Human Resources Committee and the Committee on Governance/ Directors may be found on the Company’s website at www.commercebank.com/027.html. The Company’s Code of Ethics and the Code of Ethics for Senior Financial Officers may also be found on the website.

      In conjunction with regularly scheduled Board Meetings, the Board of Directors meets in Executive Session without the presence of any non-independent directors or Company employees. Four Executive Sessions were held in 2005. The Chairman of the Committee on Governance/ Directors serves as Chairman of

the Executive Session and functions as the Lead Director to communicate with management and non-independent directors. The Board of Directors plans on conducting at least four Executive Sessions during 2006.

      At its meeting on February 16, 2006, the Committee on Governance/ Directors reviewed the independent status of the members of the Board of Directors and each standing Committee. The Committee considered applicable laws and regulations and NASDAQ Rule 4200. The findings of the Committee were reported to the Board of Directors. Based on those findings, the Board of Directors determined that all directors except for Messrs. David W. Kemper and Jonathan M. Kemper are independent. Mr. Seth Leadbeater, who is nominated for election to the Class of 2009, if elected, will not be considered independent. The Board also determined that Mr. Robert H. West was qualified to serve as the Financial Expert on the Audit Committee and was so designated.

      The Governance Guidelines adopted by the Board of Directors recognize the responsibility of the directors to attend meetings. A board meeting is held each year in conjunction with the annual shareholders meeting at which directors are expected to attend. In 2005, all board members attended the annual shareholders’ meeting.

      The Board of Directors held four meetings during 2005. Each director, except John C. Capps (70%) and Benjamin F. Rassieur, III (70%) attended 75% or more of the total number of meetings of the Board and meetings held by committees of the Board on which the respective director served.

      Directors and officers of the Company and the nominees for directors and their associates have deposit accounts with the subsidiary banks of the Company, and some directors, nominees for directors and officers and their associates also have other transactions with the subsidiary banks, including loans in the ordinary course of business, all of which were made on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with other persons, and did not involve more than normal risk of collectibility or present other unfavorable features. All such loans were made pursuant to 12 USC 375(b) and Regulation O promulgated thereunder. As of December 31, 2005, all such loans were current.

      Messrs. David Kemper and Jonathan Kemper are directors of Tower Properties Company (Tower) and together with members of their immediate families own beneficially approximately 65% of the outstanding stock of Tower.

      During 2005, subsidiaries of the Company paid Tower $508,749 for rentals, $103,878 for leasing fees, $97,690 for operation of parking garages, $1,431,682 for building management fees, $2,503,265 for other property construction and repair costs and $206,617 for interest paid on deposits with the Company’s principal banking subsidiary.

Director Compensation

      An employee of the Company or a subsidiary of the Company receives no additional compensation for serving as a director. Non-employee directors of the Company are required to participate in the Stock Purchase Plan for Non-Employee Directors. Under this Plan, all compensation payable to a non-employee director is credited to an account in the name of such director as earned and the Company contributes to the account of such director an additional amount equal to 25% of the compensation credited to the director’s account. As of the last business day of each month, the cash balance is used to purchase from the Company whole shares of common stock of the Company based on the last sale price of the Company’s common stock on such date. Each non-employee director of the Company is paid (as adjusted for the 25% contribution by the Company) the annual retainer of $10,000 (paid on a quarterly basis), fees of $3,000 for each meeting of the Board of Directors attended, and fees of $750 for attendance at each meeting of a committee of which the director was a member and attended. An annual fee of $5,000 is paid to all non-employee committee chairmen.

THE BOARD OF DIRECTORS

RECOMMENDS A VOTE FOR

RATIFICATION OF THE SELECTION OF

KPMG LLP AS THE INDEPENDENT PUBLIC ACCOUNTANTS

PROPOSAL TWO

      Pursuant to the Sarbanes-Oxley Act of 2002 the Audit Committee of the Company is responsible for the selection and approval of the Company’s public accountants for the purpose of the examination and audit of the Company’s financial statements for 2006. The Audit Committee has also adopted a procedure for the pre-approval of non-audit services. The Audit Committee has selected and the Board of Directors has ratified the selection of KPMG LLP as the firm to conduct the audit of the financial statements of the Company and its subsidiaries for 2006. This selection is presented to the shareholders for ratification, however, the failure of the shareholders to ratify the selection will not change the engagement of KPMG LLP for 2006. The Audit Committee will consider the vote of the shareholders for future engagements. Representatives of KPMG LLP are expected to be present at the Annual Meeting and will be available to respond to appropriate questions. The representatives will also be provided an opportunity to make a statement.

Employment Contracts, Termination of Employment and Change-in-Control Arrangements

      The Company has a Severance Agreement with each of David W. Kemper, Jonathan M. Kemper, Seth M. Leadbeater, Charles G. Kim and Kevin G. Barth which provides, among other things, that if his employment is terminated by the Corporation without “cause” or by him for “good reason” either during the twelve months before or the three years after a “change in control,” or if he voluntarily terminates for any reason during the 30 days following one year after a “change of control,” he shall receive three times the sum of his annualized base salary in effect twelve months prior to the “change in control,” and his average annual bonus for the prior three years; the greater of his actual bonus for the preceding year or his target bonus for the current year (prorated for the year in which the termination occurs); and continuation of health and welfare benefits for him and his spouse for three years or until age 65 if sooner, at a cost equal to such rates paid from time to time by similarly situated employees of the Corporation, “grossed up” to cover any excise tax imposed by Section 4999 of the Internal Revenue Code.

Executive Compensation

      The following information is given as to the Chief Executive Officer (“CEO”) and as to each of the four most highly compensated executive officers of the Company, other than the CEO, who received total cash compensation of more than $100,000, during the fiscal year ended December 31, 2005.

Summary Compensation Table

The Company’s practice is to pay dividends on restricted shares directly to the officer awarded the shares.

Option/ SAR Grants in Last Fiscal Year

      Options granted (column b) include only Non-Qualified Stock Options (NQ). All substantive terms are identical — four (4) equal vesting periods with 25% exercisable at date of grant and an additional 25% exercisable on each anniversary date thereof. The exercise price is defined as the closing market price on the date of grant, and the options are not exercisable following voluntary termination. The options are not assignable but may be exercised by the optionee’s estate or beneficiary, subject to certain limitations, in the case of the death of the optionee.

Aggregated Options/ SAR Exercises in Last Fiscal Year and FY-End Option/ SAR Values

Equity Compensation Plan Information

      The following table provides information as of December 31, 2005, with respect to compensation plans under which common shares of Commerce Bancshares, Inc. are authorized for issuance to certain officers in exchange for services provided. These compensation plans include: (1) the Commerce Bancshares, Inc. 2005 Equity Incentive Plan, (2) the Commerce Bancshares, Inc. 1996 Incentive Stock Option Plan, (3) the Commerce Bancshares, Inc. Restricted Stock Plan, (4) the Commerce Bancshares, Inc. Stock Purchase Plan for Non-Employee Directors and (5) the Commerce Bancshares, Inc. Executive Incentive Compensation Plan (deferred compensation plan). As of January 1, 2006, all future equity based awards will be granted pursuant to the 2005 Equity Incentive Plan. All of these compensation plans were approved by the Company’s shareholders.

Performance Graph

Five Year Cumulative Total Return

Retirement Benefits

      The Company maintains the Commerce Bancshares Restated Retirement Plan (Plan). Employees hired before July 1, 2003 were eligible to participate in the Plan on the later of January 1st or July 1st after completion of one year of service and the attainment of age 21. The Plan provides benefits based upon earnings, age and years of participation.

      The annual benefit is determined under a cash balance formula effective January 1, 1995 and in accordance with the fifth plan amendment effective January 1, 2005, as described below. Under the cash balance formula, a retirement account balance is maintained for each participant. At the end of each Plan Year beginning after December 31, 1994 through the Plan year ended December 31, 2004, the participant’s account was credited with a cash balance credit equal to: 1) employee pay times a stated percentage, and 2) the same percentage multiplied by the amount of pay in excess of 50% of the Social Security taxable wage base for the year. Pay for this purpose is limited by Section 401(a)(17) of the Internal Revenue Code. The applicable percentage of pay is determined by the sum of the participant’s age and years of participation at the beginning of the Plan year, and ranges from 1% for a sum of less than 30 to 4% for a sum of 75 or more. Interest is also credited to the participant’s account at the end of each Plan Year beginning after 1995 at a rate of not less than 5% of the account balance at the end of each Plan Year (for 2005, the rate of interest was 5%).

      Under the fifth Plan amendment effective January 1, 2005, the cash balance portion of the benefit was frozen and no additional cash balance credits will be applied to participant’s accounts. Interest will continue to

be credited to participant accounts until retirement. At retirement, the participant account balance is converted to various benefit options based on actuarial factors defined in the Plan.

      Additionally, participants in the Plan prior to January 1, 1995 will receive an annual benefit equal to the annual benefit accrued through December 31, 1994 under the Plan’s prior formula, adjusted for increases in the cost of living (not to exceed 4% per year) for each year of participation after December 31, 1994.

      The Plan is fully paid for by the Company and employees covered by the Plan become vested after five years of service. The normal retirement age under the Plan is 65; reduced benefits are available as early as age 55.

      In addition, certain executive officers of the Company receive a special minimum plan benefit based on the final five-year average pay and years of service. (This provision is subject to IRS approval, which has been requested.) Messrs. D. Kemper, J. Kemper, Leadbeater, Barth and Kim have, respectively, 25, 22, 14, 20 and 14 years of service as of December 31, 2004, after which additional credits were frozen. Compensation for these executive members of the Plan includes salary (as reported in the Summary Compensation Schedule) and was limited by Section 401(a)(17) of the Internal Revenue Code. Accordingly compensation covered by the Plan in 2004, the last Plan year before additional cash balance credits were frozen, for each of Mr. D. Kemper, Mr. J. Kemper, Mr. Leadbeater, Mr. Barth and Mr. Kim was $205,000.

      The estimated annual benefits payable at normal retirement age for Messrs. D. Kemper, J. Kemper, Leadbeater, Barth and Kim are $85,701, $68,534, $40,054, $36,530, and $38,721 respectively.

      The Company also maintains the Commerce Executive Retirement Plan (“CERP”), effective January 1, 1995, a non-qualified plan established to provide benefits to a select group of executives on compensation in excess of the allowable benefits of the Company’s pension and 401(K) plans. The CERP is unfunded and benefits are payable from the assets of the Company. The Board of Directors may designate the CEO as a participant; other participants are selected by the CEO. Messrs. D. Kemper, J. Kemper, Leadbeater, Barth and Kim were participants in the CERP during 2005.

      A participant’s benefit under the CERP is based on the sum of two benefit calculations: a “Pre-2005 Benefit” and a “Post-2004 Benefit”. The “Pre-2005 Benefit” of the CERP is the amount by which the benefit that would be payable under the Commerce Bancshares Restated Retirement Plan (Plan) including any deferred cash bonuses (under the Company’s nonqualified deferred compensation plan) and without regard to the pay limit of Section 401 (a)(17) of the Internal Revenue Code, exceeds the benefit actually payable under the Plan.

      The estimated annual “Pre-2005 Benefit” payable at normal retirement age for Messrs. D. Kemper, J. Kemper, Leadbeater, Barth, and Kim are $145,301, $34,158, $0, $1,268 and $0 respectively. These benefits assume the election of a retirement allowance payable as a straight life annuity to the participants.

      The “Post-2004 Benefit” of the CERP is equal to 7% of the participant’s compensation above the Section 401(a)(17) pay limit for the year plus deemed earnings thereon. The “Post-2004 Benefit” also includes any match not credited to the participant’s account under the Company’s 401(k) plan due to non-discrimination tests. Benefit amounts are credited to participant accounts on the last day of each plan year beginning on and after January 1, 2005. Compensation covered by this benefit includes salary and bonuses. The account balance is payable as a lump sum upon the participant’s retirement. The compensation for 2005 covered by the “Post-2004 Benefit” as reported in the Summary Compensation Schedule for Messrs. D. Kemper, J. Kemper, Leadbeater, Barth, and Kim was $1,103,647, $381,504, $236,475, $192,500, and $203,500, respectively.

      In 2005 under the “Post-2004 Benefit”, the Company credited the accounts of Messrs. D. Kemper, J. Kemper, Leadbeater, Barth, and Kim in the amounts of $77,256, $26,705, $16,553, $13,475, and $14,245, respectively.

Committee Report on Executive Compensation

      The Compensation and Human Resources Committee is responsible for the establishment and review of compensation policies and programs for the Company’s executive officers, including the chief executive officer and the four other most highly paid executive officers (collectively with the Chief Executive Officer, the “senior executives”). The overall objectives of the committee are to develop compensation policies and practice that:

      During 2005, the four members of the Compensation and Human Resources Committee were all non-employee directors. The principal elements of the Company’s executive compensation program for the fiscal year ended December 31, 2005, applicable to the Company’s senior executives, were:

      With respect to the Chief Executive Officer, the Committee reviews Mr. David Kemper’s performance each year and makes recommendations to the Board for any new awards. Mr. Kemper completes a self-appraisal, which the Committee considers before making its final recommendation. In addition to the performance criteria above, several factors are considered in the review of Mr. Kemper’s performance with an overall focus on the increase in the franchise value of the company. Besides financial performance, the Committee also considers factors such as growth in the human capital of the organization, the continued reinvestment and improvement of the Company’s product offerings and the overall focus on risk management.

      In evaluating the reasonableness of senior executive compensation, the Committee considers total compensation. Total compensation for 2005 includes (i) base salary paid; (ii) cash bonus earned in 2005 but paid in 2006; (iii) restricted stock and SAR awards granted in 2006 for performance in 2005 (SAR awards are valued based on Financial Accounting Standard 123 expense valuation); (iv) Company allocations for the Commerce Executive Retirement Plan; (v) investment income from deferred compensation plans; (vi) Company contributions from 401(k) plans; and (vii) amounts for group term life insurance. Realized and unrealized equity compensation gains along with vesting of prior equity grants are not considered. Total compensation paid to the named executive officers for 2005 was as follows: David W. Kemper — $2,935,866; Jonathan M. Kemper — $1,502,216; Seth M. Leadbeater — $796,703; Charles G. Kim — $700,134; Kevin G. Barth — $757,396. Compensation for both David W. Kemper and Jonathan M. Kemper includes $753 each attributable to the personal use of the corporate airplane for a related family member. In the Committee’s opinion, the total compensation of the named executive officers for 2005 was reasonable.

      Base pay for the named executive officers was approved by the Board of Directors based on recommendations from the Committee, at the Company’s regular Board meeting on February 17, 2006. The new base pay approved for 2006 (effective 4/1/06) was as follows: David W. Kemper — $788,000; Jonathan M. Kemper — $408,000; Seth M. Leadbeater — $320,500; Charles G. Kim — $295,000; and Kevin Barth — $295,000.

      The Commerce Bancshares, Inc. Executive Incentive Compensation Plan was amended in 2002 to comply with the Section 162(m) of the Code. This Code section limits the Company’s tax deduction for non-performance based compensation paid to the named executive officers to $1,000,000. Although in 2005, the taxable compensation paid to the Chief Executive Officer exceeded $1,000,000, the entire amount was deductible by the Company. All compensation paid to other named executive officers was deductible by the Company.

      The Company did not use any outside paid consultants to assist the Committee in evaluating executive compensation or in making salary recommendations.

      The Non-Qualified Stock Option Plan was amended in 1995 to provide for a formula to determine the maximum number of options, which may be granted in any one year to any one person, which means any income recognized on the exercise of a non-qualified stock option will qualify as “performance-based compensation” and will be deductible by the Company. That plan terminated as to any new awards on December 31, 2005. As of January 1, 2006, all new awards will be granted subsequent to the 2005 Equity Incentive Plan approved by the stockholders on April 20, 2005.

      Executives other than senior executives also participate in the bonus, stock option and restricted stock programs. Other elements of compensation offered to the senior executives and to all other eligible employees include participation in a 401(k) deferred contribution plan and a Non-Qualified Deferred Compensation Plan.

      Submitted by the Compensation and Human Resources Committee of the Company’s Board of Directors:

Audit Committee Report

      The role of the Audit Committee is to assist the Board of Directors in its oversight of the Company’s accounting, auditing and financial reporting processes. As noted under the Corporate Governance and Director Independence section of this report, the Board of Directors has determined that all members of the Audit Committee are “independent”. The Audit Committee operates pursuant to a Charter that was last amended and restated by the Board on January 30, 2004. As set forth in the Charter, management of the Company is responsible for establishing and maintaining the Company’s internal control over financial reporting and for preparing the Company’s financial statements in accordance with generally accepted accounting principles and applicable laws and regulations. Management is also responsible for conducting an evaluation of the effectiveness of the internal control over financial reporting based on the framework in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. The Audit Committee is directly responsible for the compensation, appointment and oversight of KPMG LLP, the independent auditor for the Company. KPMG LLP is responsible for performing an independent audit of the Company’s financial statements and expressing an opinion as to their conformity with generally accepted accounting principles. KPMG LLP is also responsible for auditing management’s assessment of the effectiveness of the internal control over financial reporting and expressing an opinion as to its overall effectiveness and management’s assessment of those controls.

      Members of the Audit Committee include Robert H. West (Chairman), James B. Hebenstreit, Benjamin F. Rassieur, III, Thomas A. McDonnell, and John R. Capps. Mr. West is designated as an “audit committee financial expert” within the meaning of that term as defined by the Securities and Exchange Commission pursuant to Section 407 of the Sarbanes-Oxley Act of 2002. The Audit Committee’s responsibility is one of oversight. Members of the Audit Committee rely on the information provided and the representations made to them by: (i) management, which has primary responsibility for establishing and maintaining appropriate internal financial controls over financial reporting, and for Commerce Bancshares, Inc. financial statements and reports and (ii) the external auditor, which is responsible for expressing an opinion that the financial statements have been prepared in accordance with generally accepted accounting principles, that management’s assessment that the Company maintained effective internal control over financial reporting is fairly stated, and that the audit of the Company’s financial statements by the external auditor has been carried out in accordance with Standards of the Public Company Accounting Oversight Board (PCAOB).

      In this context the Audit Committee has considered and discussed the audited financial statements and management’s assessment on internal control over financial reporting with management and the independent auditors as of December 31, 2005. The Audit Committee has also discussed with the independent auditors the matters required to be discussed by Statement on Auditing Standard No. 61, Communication with Audit Committees, as currently in effect. Finally, the Audit Committee has received the written disclosures and the letter from KPMG LLP required by Independence Standards Board No. 1, Independence Discussions with Audit Committees, as amended by the Independence Standards Board. The Audit Committee has considered the compatibility of non-audit services with the auditors’ independence and has discussed with the external auditors their independence.

      Based on the reviews and discussions described in this report, and exercising the Audit Committee’s business judgment, the Audit Committee recommends to the Board of Directors that the audited financial statements referred to above be included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2005 to be filed with the Securities and Exchange Commission.

      The Audit Committee has selected KPMG LLP as the Company’s external auditors for fiscal 2006 and has approved submitting the selection of the independent external auditors for ratification by the shareholders. Audit, audit-related and any permitted non-audit services provided to Commerce Bancshares, Inc. by KPMG LLP are subject to pre-approval by the Audit Committee. All fees paid in 2005 were pre-approved by the Audit Committee.

      Submitted By The Audit Committee of the Company’s Board of Directors:

Pre-approval of Services by the External Auditor

      The Audit Committee has adopted a policy for pre-approval of audit and permitted non-audit services provided by the Company’s external auditor. Annually the Audit Committee will review and approve the audit services to be performed along with other permitted services including audit-related and tax services to be provided by its external auditor. The Audit Committee may pre-approve certain recurring designated services where appropriate and services for individual projects that do not exceed $25,000.

      Proposed engagements that do not meet these criteria may be presented to the Audit Committee at its next regular meeting or, if earlier consideration is required, to one or more of its members. The member or members to whom such authority is delegated shall report any specific approval of services at the next regular Audit Committee meeting. The Audit Committee will regularly review summary reports detailing all services provided to the Company by its external auditor.

      The following is a summary of fees billed by KPMG LLP for professional services rendered during the fiscal years ended December 31, 2005 and 2004:

      The audit fees billed by KPMG LLP are for professional services rendered for the audits of the Company’s annual consolidated financial statements and the audit of management’s assessment of the effectiveness of internal controls for the fiscal year ended December 31, 2005 and for the reviews of the financial statements included in the Company’s Quarterly Reports on Form 10-Q for that fiscal year. Audit fees also include audits of several venture capital subsidiaries, a brokerage subsidiary and a mortgage-banking subsidiary and for miscellaneous accounting research and advice provided.

      Audit related fees are mainly for services rendered for the audits of the Company’s benefit plans and agreed upon examination procedures relating to the Company’s trust operations. Tax fees are for services including both review and preparation of corporate income tax returns and tax consulting services.

Compensation Committee Interlocks and Insider Participation

      During 2005, the Compensation and Human Resources Committee consisted of four independent members of the Board of Directors of the Company. During 2005, the Committee consisted of Ms. Mary Ann Van Lokeren and Messrs. Giorgio Balzer, Terry O. Meek and Andrew C. Taylor.

Section 16(a) Beneficial Ownership Reporting Compliance

      Pursuant to Section 16 of the Securities Exchange Act of 1934, the Company’s Directors and certain executive officers are required to report, within specified due dates, their initial ownership of the Company’s common stocks and all subsequent acquisitions, dispositions or other transfers of interest in such securities, if and to the extent reportable events occur which require reporting by such due dates. The Company is required to identify in its proxy statement whether it has knowledge that any person required to file such a report may have failed to do so in a timely manner. Based on that review, all of the Company’s directors and all executive officers subject to the reporting requirements satisfied such requirements in full, except for the following

delinquencies which were filed on either Form 4 or Form 5: for Robert J. Rauscher, delinquent Form 4’s were filed to correct an error on a vested restricted stock award in a previous year; for Terry O. Meek, a delinquent Form 4 was filed for stock issued to spouse; for Michael J. Petrie, a Form 5 was filed to correct errors in reporting several stock option exercise transactions in previous years; for Kevin G. Barth, a Form 5 was filed to report an option exercise; and for Sara E. Foster, a Form 5 was filed to report shares acquired through dividend reinvestment.

Shareholder Proposals and Nominations

      Proposals of shareholders pursuant to Rule 14a-8 for inclusion in the proxy statement for the annual meeting of shareholders to be held on April 18, 2007, must be received by the Company at its principal offices not later than November 13, 2006. For proposals other than those submitted pursuant to Rule 14a-8, the Company’s By-laws provide that shareholders must give timely written notice to the Secretary of the Company of a nomination for director or before bringing any business before the annual meeting. Notice of nominations and shareholder proposals for the annual meeting to be held on April 18, 2007 must be received by the Secretary no later than February 17, 2007 nor before January 18, 2007. To be considered, the notice must contain the name and record address of the shareholder; the class or series and number of shares of capital stock of the Company owned beneficially or of record by the shareholder; a description of all arrangements or understandings between such shareholder and each proposed nominee and any other person or persons (including their names) pursuant to which the nomination(s) or shareholder proposal is made; and a representation that such shareholder intends to appear in person or by proxy at the meeting to nominate the person or bring the business proposal before the meeting. For shareholder proposals, the notice must also set forth a brief description of the business to be brought before the meeting and the reasons for conducting such business at the meeting and any material interest of such shareholder in such business. For nominations, the notice must also set forth as to each person the shareholder proposes to nominate for election as a director the name, age, business and residence address of the person; the principal occupation or employment of the person; the class or series and number of shares of capital stock of the Company which are owned beneficially or of record by the person and any other information relating to the person nominated or the nominating shareholder that would be required to be disclosed in a proxy statement or other filings required to be made in connection with solicitations of proxies for election of directors pursuant to Section 14 of the Securities and Exchange Act of 1934. Such notice must also be accompanied by a written consent of each proposed nominee to be named a nominee and to serve as a director if elected.

Shareholder Communications

      The Board has not adopted a formal policy for shareholder communications. However, the Company has a longstanding practice that shareholders may communicate to the Board or any individual director through the Secretary of the Company. The Secretary will forward all such communications to the Board or any individual director. The Secretary will not forward any communications that: (i) constitute commercial advertising of products; (ii) contain offensive language or material; (iii) are not legible or coherent; or (iv) are in the nature of customer complaints that can be handled by Company management. A formal adoption of a policy in line with the current Company practice will be considered by the Committee on Governance/ Directors.

Other Matters

      The management does not know of any matter or business to come before the meeting other than that referred to in the notice of meeting but it is intended that, as to any such other matter or business, the person named in the accompanying proxy will vote said proxy in accordance with the judgment of the person or persons voting the same.

Electronic Access to Proxy Statement and Annual Report

      This proxy statement and the 2005 annual report are available on the Company’s Internet site at http://www.commercebank.com/ir. Most Shareholders can elect to view future proxy statements and annual reports over the Internet instead of receiving paper copies in the mail.

      Shareholders of record can choose this option and save the Company the cost of producing and mailing these documents by logging on to the sign-up website at http://www.econsent.com/cbsh and filling out the online consent form. Shareholders who choose to view future proxy statements and annual reports over the Internet will receive an e-mail message next year with instructions containing the Internet address of those materials. The election may be withdrawn at any time by accessing your account on the website and changing the election. Shareholders do not have to elect Internet access each year.

      Shareholders who hold their Company stock through a bank, broker or other holder of record, should refer to the information provided by that entity for instructions on how to elect to view future proxy statements and annual reports over the Internet.

March 13, 2006

APPENDIX A

COMMERCE BANCSHARES, INC.

AUDIT COMMITTEE CHARTER

Audit Committee Purpose

      The Audit Committee is appointed by the Board of Directors to assist the Board in monitoring:

      The Audit Committee shall prepare the report required by the rules of the Securities and Exchange Commission (the “Commission”) to be included in the Company’s annual proxy statements.

Committee Membership

      The Audit Committee shall consist of no fewer than three members. The members of the Audit Committee shall meet the independence and experience requirements of Section 10A(m)(3) of the Securities Exchange Act of 1934 (the “Exchange Act”), Nasdaq and the rules and regulations of the Commission. Audit Committee members must be able to read and understand financial statements at the time of their appointment. At least one member of the Audit Committee shall be an “audit committee financial expert” as defined by the Commission. The members of the Audit Committee shall be appointed by the Board on the recommendation of the Committee on Governance/ Directors. Audit Committee members may be replaced by the Board.

Meetings

      The Audit Committee shall meet as often as it determines, but not less frequently than quarterly. The Audit Committee shall meet periodically with management, the internal auditors and the independent auditor in separate executive sessions. The Audit Committee may request any officer or employee of the Company or the Company’s outside counsel or independent auditor to attend a meeting of the Committee or to meet with any members of, or consultants to, the Committee.

Committee Authority and Responsibilities

      The Audit Committee shall have the sole authority to appoint or replace the independent auditor. The Audit Committee shall be directly responsible for the compensation and oversight of the work of the independent auditor (including resolution of disagreements between management and the independent auditor regarding financial reporting) for the purpose of preparing or issuing an audit report or related work. The independent auditor shall report directly to the Audit Committee.

      The Audit Committee shall pre-approve all auditing services and permitted non-audit services, as outlined in its established policy, (including the fees and terms thereof) to be performed for the Company by its independent auditor, subject to the de minimus exceptions for non-audit services described in Section 10A(i)(1)(B) of the Exchange Act, which are approved by the Audit Committee prior to the completion of the audit.

      The Audit Committee shall have the authority, to the extent it deems necessary or appropriate, to retain independent legal, accounting or other advisors. The Company shall provide for appropriate funding, as determined by the Audit Committee, for payment of compensation to the independent auditor for the purpose of rendering or issuing an audit report and to any advisors employed by the Audit Committee.

      The Audit Committee shall make regular reports to the Board. The Audit Committee shall review and reassess the adequacy of this Charter annually and recommend any proposed changes to the Board for approval.

      The Audit Committee, to the extent it deems necessary or appropriate, shall:

Financial Statement and Disclosure Matters

Oversight of the Company’s Relationship with the Independent Auditor

Oversight of the Company’s Internal Audit Function

Compliance Oversight Responsibilities

Limitation of Audit Committee’s Role

      While the Audit Committee has the responsibilities and powers set forth in this Charter, it is not the duty of the Audit Committee to plan or conduct audits or to determine that the Company’s internal control over financial reporting is effective or that its financial statements and disclosures are complete and accurate and are in accordance with generally accepted accounting principles and applicable rules and regulations. These are the responsibilities of management and the independent auditor.