UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

of the Securities Exchange Act of 1934

(Amendment No.)

Filed by the Registrantx

Filed by a Party other than the Registrant¨

Check the appropriate box:

Pinnacle Bankshares Corporation

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

[Logo]

LOGO

Dear Fellow Shareholders:

You are cordially invited to attend the 20032006 Annual Meeting of Shareholders of Pinnacle Bankshares Corporation, the holding company for The First National Bank of Altavista. The meeting will be held on Tuesday, April 8, 2003,11, 2006, at 11:30 a.m. at the Fellowship Hall of Altavista Presbyterian Church, located at 707 Broad Street, Altavista, Virginia. The accompanying Notice and Proxy Statement describe the matters to be presented at the meeting. Enclosed is our 20022005 Annual Report to Shareholders that will be reviewed at the Annual Meeting.

Please complete, sign, date and return the enclosed proxy card as soon as possible. Whether or not you will be able to attend the Annual Meeting, it is important that your shares be represented and your vote recorded. Your proxy may be revoked at any time before it is voted at the Annual Meeting.

We appreciate your continuing loyalty and support of The First National Bank of Altavista and Pinnacle Bankshares Corporation.

Altavista, Virginia

March 7, 200310, 2006

Pinnacle Bankshares Corporation

622 Broad Street

Altavista, Virginia 24517

NOTICE OF 20032006 ANNUAL MEETING OF SHAREHOLDERS

TO BE HELD APRIL 8, 200311, 2006

The 20032006 Annual Meeting of Shareholders of Pinnacle Bankshares Corporation will be held at the Fellowship Hall of Altavista Presbyterian Church, located at 707 Broad Street, Altavista, Virginia, on Tuesday, April 8, 2003,11, 2006, at 11:30 a.m. for the following purposes:

Shareholders of record at the close of business on February 21, 2003,2006, are entitled to notice of and to vote at the Annual Meeting or any adjournment thereof.

March 7, 2003

10, 2006

IMPORTANT NOTICE

Please complete, sign, date and return the enclosed proxy card in the accompanying postage paid envelope so that your shares will be represented at the meeting. Shareholders attending the meeting may personally vote on all matters which are considered, in which event their signed proxies arewill be revoked.

Pinnacle Bankshares Corporation

622 Broad Street

Altavista, Virginia 24517

PROXY STATEMENT

20032006 ANNUAL MEETING OF SHAREHOLDERS

April 8, 200311, 2006

GENERAL

The following information is furnished in connection with the solicitation by and on behalf of the Board of Directors of the enclosed proxy to be used at the 20032006 Annual Meeting of Shareholders (the “Annual Meeting”) of Pinnacle Bankshares Corporation (the “Company”) to be held Tuesday, April 8, 2003,11, 2006, at 11:30 a.m. at the Fellowship Hall of Altavista Presbyterian Church, located at 707 Broad Street, Altavista, Virginia. The approximate mailing date of this Proxy Statement and accompanying proxy is March 7, 2003.

10, 2006.

Revocation and Voting of Proxies

Execution of a proxy will not affect a shareholder’s right to attend the Annual Meeting and to vote in person. Any shareholder who has executed and returned a proxy may revoke it by attending the Annual Meeting and requesting to vote in person. A shareholder may also revoke his proxy at any time before it is exercised by filing a written notice with the Company or by submitting a proxy bearing a later date. Proxies will extend to, and will be voted at, any properly adjourned session of the Annual Meeting. If a shareholder specifies how the proxy is to be voted with respect to any proposal for which a choice is provided, the proxy will be voted in accordance with such specifications. If a shareholder fails to specify with respect to proposalProposal 1 set forth in the accompanying notice and further described herein, the proxy will be voted FOR the director nominees named in proposalProposal 1.

Voting Rights of Shareholders

Only those shareholders of record at the close of business on February 21, 2003,2006, are entitled to notice of and to vote at the Annual Meeting, or any adjournments thereof. The number of shares of common stock of the Company outstanding and entitled to vote at the Annual Meeting is 1,453,203.1,458,706. The Company has no other class of stock outstanding. A majority of the votes entitled to be cast, represented in person or by proxy, will constitute a quorum for the transaction of business. Each share of Company common stock entitles the record holder thereof to one vote upon each matter to be voted upon at the Annual Meeting.

Shares for which the holder has elected to abstain or to withhold the proxies’ authority to vote (including broker non-votes) on a matter will count toward a quorum, but will not be included in determining the number of votes cast with respect to such matter. With regard to the election of directors, votes may be cast in favor or withheld. If a quorum is present, the nominees receiving a pluralitythe greatest number of theaffirmative votes cast at the Annual Meeting will be elected directors; therefore, votes withheld will have no effect. Thus, although abstentions and broker non-votes (shares held by customers which may not be voted on certain matters because the broker has not received specific instructions from the customer) are counted for purposes of determining the presence or absence of a quorum, for the transaction of business, they are generally not counted for purposes of determining whether a proposal has been approved and, therefore, have no effect.

Solicitation of Proxies

The cost of solicitation of proxies will be borne by the Company. Solicitations will be made only by the use of the mails, except that officers and regular employees of the Company and The First National Bank of Altavista (the “Bank”) may make solicitations of proxies in person, by telephone telegram, special letter, or by special call,mail, acting without compensation other than their regular compensation. We anticipate that brokerage houses and other nominees, custodians, and fiduciaries will be requested to forward the Company’s proxy soliciting material to the beneficial owners of the stock held of record by such persons, and the Company will reimburse them for their charges and expenses in connection with this activity.

Securities Ownership of Certain Beneficial Owners

The following table sets forth the beneficial ownership of the Company’s common stock, as of the date of this Proxy Statement,March 1, 2006, for each director, director nominee, certain executive officers, and for all directors, director nominees and executive officers as a group. To the Company’s knowledge, no shareholder of the Company owns more than 5% of the Company’s outstanding common stock.

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PROPOSAL ONE1

ELECTION OF DIRECTORS

The Company’s Board is divided into three classes (I, II and III) of directors. The term of office for Class III directors will expire at the Annual Meeting. The fourthree persons named below are being nominated to serve as Class III directors. If elected, the Class III nominees will serve until the 20062009 Annual Meeting of Shareholders.

Warren G. Lowder is currently a Class III director of the Company. Mr. Lowder has expressed his intention not to stand for re-election based on his increased business responsibilities and anticipated relocation to North Carolina later in 2003.

Michael E. Watson is being nominated for election as a new Class III director. Mr. Watson is a native of Campbell County and is a certified public accountant. He has been active in public and private accounting and financial management primarily in the central Virginia market since his graduation from Virginia Polytechnical Institute and State University in 1976. Currently Mr. Watson serves as Financial Manager and is a Principal of Flippin, Bruce & Porter, Inc., a Lynchburg investment management firm.

The other nominees for election as Class III directors, Herman P. Rogers, Jr., Carroll E. Shelton, and John L. Waller, Michael E. Watson, currently serve as directors of the Company and are standing for re-election.

The persons named in the proxy will vote for the election of the nominees named below unless authority is withheld. The Company’s Board believes that the nominees will be available and able to serve as directors, but if any of these persons should not be available or able to serve, the proxies may exercise discretionary authority to vote for a substitute proposed by the Company’s Board.

Certain information concerning the nominees for election at the Annual Meeting is set forth below, as well as certain information about the Class I and Class II directors who will continue in office.

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THE BOARD OF DIRECTORS RECOMMENDS THAT THE SHAREHOLDERS VOTE “FOR” THE ELECTION OF THE NOMINEES LISTED ABOVE.

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Meetings and Committees of the Board of Directors

Board of Directors.The members of the Board of the Directors of the Company also constitute the members of the Board of Directors of the Bank.

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Meetings and Committees of the Board of Directors

The Board of Directors conducts its business through meetings of the Company’s Board and through committees of the Bank’s Board, certain of which are described below. The Company became the holding company for the Bank in May 1997, and currently, the Bank’s committees make recommendations to the Company’s Board regarding the audit, personnel and nominating functions. During calendar year 2002,2005, the Company’s Board of Directors held 7four meetings and the Bank’s Board of Directors held 12twelve meetings. No director attended fewer than 75 percent of the total meetings of the Company’s and the Bank’s BoardsBoard of Directors and the Bank committees on which he or she served during this period.

The Company has not adopted a formal policy on board members’ attendance at our annual meeting of shareholders, although all board members are encouraged to attend. All board members attended our 2005 Annual Meeting of Shareholders.

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Audit Committee.The Bank’s Audit Committee meets to review reports of the Bank’s internal auditor, who reports directly to the Audit Committee, and reviews the annual report of the Company’s independent auditors. MembersThe members of the Audit Committee are Messrs. LowderBurton (Chair), Burton, Hancock, Kent, MooreWaller and Waller,Watson and they met 6five times in 2002.2005. In addition, the Chairman of the Audit Committee held discussions with the Company’s independent auditors each quarter prior to the filing of the Company’s Quarterly Reports on Form 10-QSB as required by Statement on Auditing Standards No. 90 (Audit Committee Communications). The Company’s Board of Directors has determined that all of the members of the Audit Committee are independent for audit committee purposes under the listing standards of the Nasdaq Stock Market and applicable SEC regulations. The Board of Directors has also determined that Mr. Watson qualifies as an “audit committee financial expert” within the meaning of applicable regulations of the SEC, promulgated pursuant to the Sarbanes-Oxley Act of 2002.

Personnel Committee.The Bank’s Personnel Committee reviews officer and employee compensation and employee benefit plans and makes recommendations to the Bank’s Board concerning such matters. The Personnel Committee makes recommendations as to the employment of officers of the Bank. Members of the Personnel Committee are Messrs. Arthur, Erb, Gilliam, Hancock Overacre and Rogers,Overacre, and they met 4 timesone time in 2002.2005.

Nominating Committee.The Nominating Committee’s duties include consideration of candidates for board election. At this time, the Nominating Committee does not have a formal written charter. The Nominating Committee makes a recommendation to the Bank’sCompany’s Board concerning candidates for any vacancy that may occur and the entire Board then determines which candidate(s) should be nominated for the shareholders’ approval. MembersThe members of the Nominating Committee are Messrs. Arthur, Burton, Erb and Gilliam, and they met 2 timesone time in 2002.

2005. The Company’s Board of Directors has determined that all of the members of the Nominating Committee are independent under the listing standards of the Nasdaq Stock Market, except Mr. Gilliam.

While the Nominating Committee has no formal procedure for shareholders to submit director recommendations, the Nominating Committee will acceptconsider candidates recommended by shareholders in writing. Such written submissions should include the name, address and telephone number of the recommended candidate, along with a brief statement of the candidate’s qualifications to serve as a director. All such shareholder recommendations should be submitted to the attention of the Company’s Secretary, Pinnacle Bankshares Corporation, 622 Broad Street, Altavista, Virginia 24517, and must be received by February 8, 2007, in order to be considered by the Nominating Committee for consideration shareholders’ nominations for directors if made in writingthe next annual election of directors. Any candidates recommended by a shareholder will be reviewed and considered in the same manner as all other director candidates considered by the Nominating Committee.

In addition, in accordance with the Company’s bylaws, any shareholder entitled to vote in the election of directors. Suchdirectors generally may nominate one or more persons for election as director(s) at an annual meeting if the shareholder gives written notice of his or her intent to make such nomination. In accordance with the Company’s bylaws, a shareholder nomination must include the information required by the Company’s bylaws as well as the nominee’s written consent to serve as a director of the nomination. Shareholder nominationsCompany if selected, sufficient background information with respect to the nominee including, but not limited to, the nominee’s name and address, the amount and nature of the nominee’s beneficial ownership of the Company’s securities, his or her principal occupation for the past five years and his or her age, sufficient identification of the nominating shareholder, including the shareholder’s name and address, a description of any arrangements or understandings between the shareholder and the nominee pursuant to which the nomination is to be made by the shareholder, and a representation by the shareholder that he or she is the owner of stock of the Company entitled to vote at the annual meeting and that he or she intends to appear at the annual meeting (in person or by proxy) to nominate the individual specified in the notice. Nominations must be received by the Company’s Secretary at the Company’s principal office in Altavista, Virginia, no later than February 5, 2004,8, 2007 in order

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to be considered for the next annual election of directors.directors in 2007, or 90 days prior to the 2007 annual meeting of shareholders if such meeting is held more than 90 days after February 8. These requirements are more fully described in Article III, Section 16 of the Company’s bylaws, a copy of which will be provided, without charge, to any shareholder upon written request to the Company’s Secretary.

The Nominating Committee may identify director nominees through a combination of referrals, including by management, existing Board members and shareholders, and direct solicitations, where warranted. Once a candidate has been identified, the Nominating Committee reviews the individual’s experience and background, and may discuss the proposed nominee with the source of the recommendation. If the committee believes it to be appropriate, the Nominating Committee members may meet with the proposed nominee before making a final determination whether to recommend the individual as a nominee to the entire Board of Directors to stand for election to the Board.

Shareholder Communications with the Board of Directors

The Company provides an informal process for shareholders to send communications to our board of directors. Shareholders who wish to contact the board of directors or any of its members may do so in writing to Pinnacle Bankshares Corporation, P.O. Box 29, Altavista, Virginia 24517. Correspondence directed to an individual board member will be referred, unopened, to that member. Correspondence not directed to a particular board member will be referred, unopened, to the acting Chairman.

Directors’ Fees

All directors of the Company receivedreceive an annual retainer of $1,000 in 2002. Directors$1,500. In addition, directors of the Bank receivedreceive an annual retainer of $4,000 in 2002 and, in addition, the Bank’s outside directors received $200receive $250 for each committee meeting attended.

Directors may defer payment of all retainers and fees. The Company established a nonqualified deferred compensation plan in January 1998 for directors, which is administered by the Virginia Bankers Association Benefits Corporation.

Interest of Management in Certain Transactions

As of December 31, 2002,2005, borrowing by all policy-making officers, directors, and principal shareholders and their associates amounted to $2,479,000,$1,377,000, or 12%5.93% of total capital. The maximum aggregate amount of such indebtedness during 20022005 was $2,595,000,$1,495,000, or 13%6.44% of total year-end capital. These loans were made in the ordinary course of the Bank’s business, and in the opinion of management of the Bank, all such loans and commitments for loans were made on substantially the same terms, including interest rates, collateral and repayment terms as those prevailing at the same time for

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comparable transactions with other persons and do not involve more than a normal risk of collectibility or present other unfavorable features. The Bank expects to have in the future similar banking transactions with officers, directors, principal shareholders and their associates.

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EXECUTIVE COMPENSATION

The following table provides certain compensation information concerning Mr. Gilliam, President and CEO, and Mr. Shelton, Senior Vice President, the only executive officerofficers of the Company whose compensation exceeded $100,000 for any year in the three-year period ended December 31, 2002.2005. All compensation, other than director fees for service on the Company’s Board of Directors, was paid by the Bank, the Company’s wholly-owned subsidiary.

SUMMARY COMPENSATION TABLESummary Compensation Table

Stock Options – Grants and Year-End Values

No options were granted to Mr. Gilliam or Mr. Shelton during 2002, 2001, or 2000.2005.

Neither Mr. Gilliam did not exercisenor Mr. Shelton exercised any stock options during 2002.2005. The following table reflects certain information regarding unexercised options held at December 31, 20022005 by Mr. Gilliam.Gilliam and Mr. Shelton.

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Change-in-ControlChange in Control Agreement

The Company has entered into an agreement with Mr. Gilliam that provides for severance payments and certain other benefits if his employment terminates under specified conditions after a “change in control” (as defined therein) of the Company. Payments and benefits will be paid under the agreement only if, within two years and 60 days following a change in control, Mr. Gilliam (i) is terminated involuntarily without “cause” (as defined therein) and not as a result of death or disability, or (ii) terminates his employment voluntarily for “good reason” (as defined therein), including Mr. Gilliam’s unilateral decision to leave during any of three 60 day window periods (each beginning on the date of the change in control and the first and second anniversaries thereof). “Change in control” is defined generally to include (i) an acquisition of 20% or more of the Company’s common or voting stock, (ii) certain changes in the composition of the Company’s Board of Directors, (iii) consummation of certain business combinations or asset sales in which the Company’s historic shareholders hold less than 60% of the resulting or purchasing company or (iv) shareholder approval of the liquidation or dissolution of the Company.

In the event of a covered termination following a change in control, Mr. Gilliam will be entitled to receive (i) a severance payment made over three years or in a lump sum equal to 2.5 times the sum of Mr. Gilliam’s highest annual base salary during the 24 month24-month period ending on the date of the change in control and his highest bonuses for any of the Company’s three fiscal years ending immediately prior to the date of the change in control and (ii) a continuation of employee welfare benefits for three years. In addition, Mr. Gilliam will have the right to require the Company to purchase his principal residence at its fair market value if he requests within one year after his termination of employment. The total payments and benefits payable, including any parachute payments otherwise made, to Mr. Gilliam may not exceed the maximum amount that may be paid without the imposition of a “golden parachute” federal excise tax on Mr. Gilliam and may also be limited by applicable banking limitations on golden parachutes.

Employee Benefit Plans

Retirement Plan. The Bank maintains a Non-Contributory Defined Benefit Retirement Plan (the “Retirement Plan”) covering substantially all employees who have reached the age of 21 and have been fully employed for at least one year. The Retirement Plan, sponsored by the Virginia Bankers Association, provides participants with retirement benefits related to salary and years of credited service.

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Employees become vested after five plan years of service, and the normal retirement date is the first day of the month coinciding with or following the employee’s 65th birthday. The Retirement Plan does not cover directors who are not active employees. The amount expensed for the Retirement Plan during the year ended December 31, 2002,2005, was $183,000.

$288,583.

The following table shows the estimated annual retirement benefits payable to employees in the average annual salary and years of service classifications set forth below assuming retirement at the normal retirement age of 65.

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Benefits under the Retirement Plan are based on a straight life annuity assuming full benefit at age 65, no offsets, and covered compensation of $36,000 for a person age 65 in 2002.2005. Compensation for 2002 wastaken into account under the Retirement Plan is limited by the Internal Revenue Code to $170,000Code’s compensation limit, which is $210,000 for the plan yearyears beginning October 1, 20012004 and to $200,0002005 and which is adjusted periodically for the plan year beginning October 1, 2002.inflation. The estimated annual benefit payable under the Retirement Plan upon retirement is $85,922$102,634 for Mr. Gilliam, credited with 40 years of service and $53,713 for Mr. Shelton, credited with 42 years of service. Benefits are estimated on the basis that heeach will continue to receive, until age 65, covered salary in the same amount paid in 2002.

2005.

Profit Sharing/401(k) Plan.Plan. The Bank adopted a Defined Contribution Profit Sharing Thrift Plan (the “Thrift Plan”) effective January 1, 1997. The Thrift Plan, sponsored by the Virginia Bankers Association, includes a 401(k) savings provision that authorizes a maximum voluntary salary deferral of up to 15% of compensation, subject to statutory limitations. All full-time employees who have reached the age of 21 with at least six months of service are eligible to participate. Contributions and earnings, which are tax-deferred, may be invested in various investment vehicles offered through the Virginia Bankers Association. The profit sharing arrangement allows for employer contributions in such amounts, if any, as the Board of Directors determines. Employees become 100% vested in any employer contributions that may be made after five plan years of service. The Bank made no contributions to the Thrift Plan for the year ended December 31, 2002.2005.

Incentive Stock Plan.Plans. The Company adopted the 1997 Incentive Stock Plan (the “Incentive Plan”) effective May 1, 1997.1997 and the 2004 Incentive Stock Plan effective May 1, 2004 (together, the “Incentive Plans”). The Incentive Plan makesPlans make available up to 50,000 and 100,000 shares of common stock, respectively, for awards to key employees of the Company and its subsidiaries in the form of stock options, stock appreciation rights, and restricted stock (collectively, “Awards”). The purpose of the Incentive PlanPlans is to

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promote the success of the Company and its subsidiaries by providing incentives to key employees that will promote the identification of their personal interests with the long-term financial success of the Company and with growth in shareholder value. The Incentive Plan isPlans are designed to provide flexibility to the Company in its ability to motivate, attract, and retain the services of key employees upon whose judgment, interest, and special effort the successful conduct of its operation is largely dependent.

Under the terms of theboth Incentive Plan,Plans, the non-employee directors of the Personnel Committee of the Board of Directors of the Bank (the “Committee”) will administer the plan.plans. No director may serve as a member of the Committee if he is eligible to participate in theeither Incentive Plan or was at any time within one year prior to his appointment to the Committee eligible to participate in theeither Incentive Plan. The Committee will havehas the power to determine the key employees to whom Awards shall be made.

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Each Award under the Incentive Plan will bePlans is made pursuant to a written agreement between the Company and the recipient of the Award (the “Agreement”). In administering the Incentive Plan,Plans, the Committee will havehas the authority, subject to approval, amendment and modification by the Board of Directors of the Company, to determine the terms and conditions upon which Awards may beare made and exercised, to determine terms and provisions of each Agreement, to construe and interpret the Incentive PlanPlans and the Agreements, to establish, amend, or waive rules or regulations for the Incentive Plan’s administration, to accelerate the exercisability of any Award, the end of any performance period, or termination of any period of restriction, and to make all other determinations and take all other actions necessary or advisable for the administration of the Incentive Plan.

Plans.

The Board may terminate, amend, or modify the Incentive PlanPlans from time to time in any respect without shareholder approval, unless the particular amendment or modification requires shareholder approval under the Internal Revenue Code of 1986, as amended (the “Code”), the rules and regulations under Section 16 of the Securities Exchange Act of 1934 or pursuant to any other applicable laws, rules, or regulations.

Section 16(a) Beneficial Ownership Reporting Compliance

Section 16(a) of the Exchange Act requires directors, executive officers and 10% beneficial owners of the Company’s common stock to file reports concerning their ownership of and transactions in such common stock. The Company believes that its officers and directors complied with all filing requirements under Section 16(a) of the Securities Exchange Act of 1934 during 2002.2005.

INDEPENDENT PUBLIC ACCOUNTANTS

KPMG LLP served as the Company’s independent public accountants for the year ended December 31, 2002. No accountants have been selected by the Board to act as the Company’s independent public accountants for the year ending December 31, 2003. The Board will make that selection later in the year based on the recommendation of the Audit Committee. A representative of KPMG LLP will be present at the Annual Meeting and will be given the opportunity to make a statement and respond to appropriate questions from the shareholders.

The following table sets forth the amount of audit fees, financial information systems design and implementation fees, and all other fees billed or expected to be billed for services rendered by KPMG LLP, the Company’s principal accountant, for the year ended December 31, 2002:

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The Audit Committee of the Board of Directors has considered whether the provision of financial information systems design and implementation and other non-audit services is compatible with maintaining KPMG LLP’s independence.

AUDIT COMMITTEE REPORT

The Audit Committee of the Board of Directors, which consists entirely of directors who meet the independence requirements of applicable SEC regulations and the National Association of Securities Dealers’Nasdaq Stock Market’s listing standards for audit committee members, has furnished the following report:

The Audit Committee (the “Committee”) reviews the Company’s financial reporting process on behalf of the Board. The role and responsibilities of the Committee are set forth in a written Charter adopted by the Board. Management has the primary responsibility for the consolidated financial statements and the reporting process, including the system of internal controls. The independent auditors are responsible for performing an independent audit of the Company’s consolidated financial statements in accordance with accounting principles generally accepted in the United States of America and to issue a report thereon. The Committee monitors these processes.

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In this context, the Committee met and held discussions with management and the independent auditors to discuss the consolidated audited financial statements for the year ended December 31, 2002.2005. Management represented to the Committee that the Company’s consolidatedaudited financial statements were prepared in accordance with accounting principles generally accepted in the United States of America, and the Committee reviewed and discussed the consolidated financial statements with management and the independent auditors. The independent auditorsCommittee also discussed with the Committeeindependent auditors the matters required to be communicateddiscussed by Statement on Auditing Standards No. 61 (Communication with Audit Committees).

In addition, the independent auditors discussed with the Committee, as amended, including their judgments about the quality, not just the acceptability, of the Company’s accounting principles and underlying estimates in the Company’s consolidated financial statementsstatements; all critical accounting policies and practices to be used; all alternative treatments within Generally Accepted Accounting Principles for policies and practices related to material items that have been discussed with management of the Company; and other material written communications between the independent auditors and the management of the Company, such as required by Statement on Auditing Standards No. 90 (Audit Committee Communications).

any management letter or schedule of unadjusted differences.

The independent auditorsCommittee also discussed with the Committeeindependent auditors the auditors’ independence from the Company and its management, and the independent auditors provided to the Committee the written disclosures and letter required by the Independence Standards Board Standard No. 1 (Independence Discussions with Audit Committees).

The Committee also discussed with the Company’s internal and independent auditors the overall scope and plans for their respective audits. The Committee met with the internal and independent auditors, with and without management present, to discuss the results of their examinations, the evaluations of the Company’s internal controls, and the overall quality of the Company’s financial reporting.

Based on the reviews and discussions referred to above, the Committee recommended to the Board of Directors, and the Board of Directors has approved, that the audited consolidated financial statements be included in the Company’s Annual Report on Form 10-KSB for the year ended December 31, 2002,2005, for filing with the Securities and Exchange Commission.

Audit Committee Members

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R. B. Hancock, Jr.

John L. Waller

Michael E. Watson

CHANGE IN INDEPENDENT AUDITORS

On January 22, 2004, the Company engaged Cherry, Bekaert & Holland, LLP (“CBH”) as its independent auditors for the fiscal year ending December 31, 2004, and chose not to renew the engagement of KPMG LLP (“KPMG”), which served as the Company’s independent auditors for the fiscal year ended December 31, 2003. The decision to change independent auditors was recommended by the Audit Committee and approved by the Board of Directors.

During the Company’s two fiscal years ended December 31, 2003, and during the subsequent interim period through January 22, 2004, there was no disagreement between the Company and KPMG on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure which, if not resolved to KPMG’s satisfaction, would have caused them to make reference to the subject

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matter of the disagreement in connection with its reports on the Company’s consolidated financial statements. The audit reports of KPMG on the Company’s consolidated financial statements as of and for the two fiscal years ended December 31, 2003 did not contain any adverse opinion or disclaimer of opinion, nor were these opinions qualified or modified as to uncertainty, audit scope or accounting principles, except that the audit report of KPMG dated January 31, 2003, referred to a change in the Company’s method of accounting for reclassified goodwill in 2002.

All such audit and non-audit services were pre-approved by the Audit Committee, which concluded that the provision of such services by Cherry, Bekaert & Holland, LLP was compatible with the maintenance of that firm’s independence in the conduct of their auditing functions.

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Pre-Approval Policies

The Audit Committee reviews and pre-approves all auditing services and permitted non-audit services performed by the Company’s independent auditors, as well as corresponding fees, subject to the de minimis exception for permitted non-audit services described in Section 10A(i)(1)(B) of the Exchange Act which are approved by the Committee prior to the completion of the audit.

The Audit Committee may form and delegate authority to, when appropriate, subcommittees consisting of one or more members, including the authority to grant pre-approvals of audit and permitted non-audit services, provided that decisions of such subcommittee to grant pre-approvals are presented to the Committee at its next scheduled meeting.

OTHER BUSINESS

As of the date of this Proxy Statement, management of the Company has no knowledge of any matters to be presented for consideration at the Annual Meeting other than those referred to above. If any other matters properly come before the Annual Meeting, the persons named in the accompanying proxy intend to vote such proxy, to the extent entitled, in accordance with their best judgment.the determination of a majority of the Board of Directors.

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SHAREHOLDER PROPOSALS FOR 20042007 ANNUAL MEETING

In accordance with the Company’s bylaws, proposals of shareholders intended to be presented at the 20042007 Annual Meeting (other than director nominations) must be in the form prescribed in Article III, Section 17 of the Company’s bylaws and received by the Company no later than November 7, 2003.10, 2006. Under applicable law and in accordance with the Company’s bylaws, the Board of Directors need not include an otherwise appropriate shareholder proposal (including any(other than shareholder nominations for director candidates) in its proxy statement or form of proxy for that meeting unless the proposal is received by the Company’s Secretary, at the Company’s principal office in Altavista, Virginia, on or before the date set forth above.

In addition, the proxy solicited by the Board of Directors for the 2007 Annual Meeting will confer discretionary authority to vote on any shareholder proposal presented at the meeting if the Company has not received notice of such proposal by January 24, 2007, in writing delivered to the Company’s Secretary.

Altavista, Virginia

March 7, 2003

10, 2006

A copy of the Company’s Annual Report on Form 10-KSB (including exhibits) as filed with the Securities and Exchange Commission for the year ended December 31, 2002,2005, will be furnished without charge to shareholders upon written request directed to the Company’s Secretary as set forth on the first page of this Proxy Statement.

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FORM OF

REVOCABLE PROXY

PINNACLE BANKSHARES CORPORATION

ANNUAL MEETING OF SHAREHOLDERS

APRIL 11, 2006

This Proxy is solicited on behalf of the Board of Directors.

The undersigned shareholder of Pinnacle Bankshares Corporation (the “Corporation”) hereby appoints E.H. Frazier, Jr., Henry S. Pittard and Percy O. Moore as proxies, with full power to act alone, and with full power of substitution to represent the undersigned, and to vote all shares of the Corporation standing in the name of the undersigned shareholder as of February 21, 2006, at the annual meeting of shareholders (the “Annual Meeting”) to be held at 11:30 a.m. Eastern Time, on Tuesday, April 11, 2006, at the Fellowship Hall of Altavista Presbyterian Church, located at 707 Broad Street, Altavista, Virginia and at any adjournments thereof, upon each of the following matters. The undersigned shareholder hereby revokes any proxy or proxies heretofore given.

1. To elect three Class III directors for three-year terms (Proposal 1):

INSTRUCTION: To withhold authority to vote for any individual nominee(s), mark “For All Except” and write the name of the nominee(s) in the space provided below.

2. The proxies are authorized to vote upon such other business as may properly come before the Annual Meeting or any adjournments of the meeting in accordance with the determination of a majority of the Corporation’s Board of Directors.

Please check box if you plan to attend the April 11, 2006 Annual Meeting.¨

Number Attending¨

This proxy will be voted as directed by the undersigned shareholder. If no direction is given, this proxy will be voted FOR the election of the nominees listed in Proposal 1. If any other matter shall be brought before the meeting, the shares represented by this proxy will be voted by the proxy agents in accordance with the determination of a majority of the Corporation’s Board of Directors. The undersigned shareholder may revoke this proxy at any time before it is voted by delivering to the Secretary of the Corporation either a written revocation of the proxy or a duly executed proxy bearing a later date, or by appearing at the Annual Meeting and voting in person.

The undersigned shareholder hereby acknowledges receipt of the Notice of the 2006 Annual Meeting of shareholders and related Proxy Statement.

Please be sure to sign and date this Proxy in the box below.

_____________________________________________ Date: ____________, 2006

Shareholder sign above ________ Co-holder (if any) sign above

ñ Detach above card, sign, date and mail in postage paid envelope provided.ñ

PINNACLE BANKSHARES CORPORATION

Please date and sign exactly as your name(s) appear(s) hereon. Each executor, administrator, trustee, guardian, attorney-in-fact and any other fiduciary should sign and indicate his or her full title. When stock hasshares have been issued in the name of two or more persons, all should sign.

Detach above card, sign, date and mail in postage-paid envelope provided.

PINNACLE BANKSHARES CORPORATION

PLEASE ACT PROMPTLY

SIGN, DATE & MAIL YOUR PROXY CARD TODAY

IF YOUR ADDRESS HAS CHANGED, PLEASE CORRECT THE ADDRESS IN THE SPACE PROVIDED BELOW AND RETURN THIS PORTION WITH THE PROXY IN THE ENVELOPE PROVIDED.

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