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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549



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FORM 10-KSB



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(Mark One)

|x | ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ------------------------------------------------------------------------------

For the fiscal year ended December 31, 2005



| ̈ | TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------

Commission File Number: 000-23909



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PINNACLE BANKSHARES CORPORATION

(Name of small business issuer in its
charter)



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|                                                               |  |                                     
|-------------------------------------------------------------- |  | ------------------------------------
|VIRGINIA                                                       |  | 54-1832714                          
|(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)



|                                         |  |           
|---------------------------------------- |  | ----------
|P.O. Box 29 Altavista, Virginia 24517    |  | 24517-0029
|(Address of principal executive offices) |  | (Zip Code)

Issuers telephone number (434) 369-3000



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Securities registered under
Section 12(b) of the Exchange Act: None

Securities registered under Section 12(g) of the Exchange Act:

Common Stock, par value $3.00

(Title of Class)



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Check whether the issuer is not required to file reports pursuant to Section 13 or 15(d) of the Exchange Act. ̈

Check whether the issuer (1) filed all reports required to be filed by Section 13 or 15(d) of the Exchange Act
during the past 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No ̈

Check if there is no disclosure of delinquent filers in response to Item 405 of Regulation S-B contained in this form, and no disclosure will be
contained, to the best of registrants knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-KSB or any amendment to this Form 10-KSB. x

Indicate by check mark whether the issuer is a shell company (as defined in Rule12b-2 of the Exchange
Act).    Yes ̈No  x

The issuers revenues for the fiscal year ended December 31, 2005: $15,066,000

The aggregate market value of the issuers Common Stock held by nonaffiliates as of March 1, 2006: $30,632,826

The number of shares outstanding of the issuers Common Stock as of March 24, 2006: 1,458,706 Shares

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the 2005
Annual Report to Shareholders are incorporated by reference in Part II of this report, which is attached hereto as Exhibit 13. Portions of the Proxy Statement for the Companys Annual Meeting of Shareholders to be held on April 11, 2006
are incorporated by reference in Part III of this report.

Transitional Small Business Disclosure
Format:    Yes ̈No  x.



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PINNACLE BANKSHARES CORPORATION

2005 FORM 10-KSB ANNUAL REPORT

TABLE OF CONTENTS



|           |  |                                                                                                                 |  |     
|---------- |  | --------------------------------------------------------------------------------------------------------------- |  | ----
|           |  |                                                                                                                 |  | Page
|           |  | PART I                                                                                                          |  |     
|           |  |                                                                                                                
|Item 1.    |  | Description of Business                                                                                         |  | 3   
|           |  | General Development of Business                                                                                 |  | 3   
|           |  | Competition                                                                                                     |  | 3   
|           |  | Regulation and Supervision                                                                                      |  | 4   
|           |  | Employees                                                                                                       |  | 9   
|           |  | Executive Officers of the Registrant                                                                            |  | 9   
|Item 2.    |  | Description of Property                                                                                         |  | 10  
|Item 3.    |  | Legal Proceedings                                                                                               |  | 10  
|Item 4.    |  | Submission of Matters to a Vote of Security Holders                                                             |  | 10  
|           |  |                                                                                                                
|           |  | PART II                                                                                                         |  |     
|           |  |                                                                                                                
|Item 5.    |  | Market for Common Equity and Related Stockholder Matters                                                        |  | 11  
|Item 6.    |  | Managements Discussion and Analysis or Plan of Operation                                                       |  | 11  
|Item 7.    |  | Financial Statements                                                                                            |  | 11  
|Item 8.    |  | Changes In and Disagreements With Accountants on Accounting and Financial Disclosure                            |  | 11  
|Item 8A.   |  | Controls and Procedures                                                                                         |  | 11  
|Item 8B.   |  | Other Information                                                                                               |  | 12  
|           |  |                                                                                                                
|           |  | PART III                                                                                                        |  |     
|           |  |                                                                                                                
|Item 9.    |  | Directors, Executive Officers, Promoters and Control Persons; Compliance with Section 16(a) of the Exchange Act |  | 12  
|Item 10.   |  | Executive Compensation                                                                                          |  | 12  
|Item 11.   |  | Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters                  |  | 12  
|Item 12.   |  | Certain Relationships and Related Transactions                                                                  |  | 13  
|Item 13.   |  | Exhibits                                                                                                        |  | 14  
|Item 14.   |  | Principal Accountant Fees and Services                                                                          |  | 15  
|           | 
|SIGNATURES |  | 16                                                                                                             



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PART I

Item 1. Description of Business.

General Development of Business

Pinnacle Bankshares Corporation, a Virginia corporation (the
Company), was organized in 1997 and is registered as a bank holding company under the Bank Holding Company Act of 1956, as amended. The Company is headquartered in Altavista, Virginia. The Company conducts all of its business activities
through the branch offices of its wholly-owned subsidiary bank, The First National Bank of Altavista (the Bank). The Company exists primarily for the purpose of holding the stock of its subsidiary, the Bank, and of such other
subsidiaries as it may acquire or establish. The Companys administrative offices are located at 622 Broad Street, Altavista, Virginia.

The Bank was organized as a national bank in 1908 and commenced general banking operations in December of that year, providing services to commercial and agricultural businesses and individuals in the Altavista area. With an emphasis on
personal service, the Bank today offers a broad range of commercial and retail banking products and services including checking, savings and time deposits, individual retirement accounts, merchant bankcard processing, residential and commercial
mortgages, home equity loans, consumer installment loans, agricultural loans, investment loans, small business loans, commercial lines of credit and letters of credit.

The Bank serves a trade area consisting primarily of Campbell County, northern Pittsylvania County, eastern Bedford County, and the city of Lynchburg from facilities located in the town of Altavista and the city of
Lynchburg, Virginia. In June 1999 the Company opened the Airport facility, located just outside the Lynchburg city limits, and in August 2000, opened the Old Forest Road facility, located on Old Forest Road in Lynchburg, and the Brookville Plaza
facility, located on Timberlake Road in Lynchburg. In August 2004 the Company opened the Forest facility, located in Forest, Bedford County, Virginia. In July 2005 the Company opened the Smith Mountain Lake loan production facility, located in
Moneta, Franklin County, Virginia. The Company opened these offices to better serve the Lynchburg, northern Campbell County, eastern Bedford County and the Smith Mountain Lake areas.

The Bank has two wholly-owned subsidiaries. FNB Property Corp., which is a Virginia corporation, was formed to hold title to Bank premises real estate.
FNB Property sold land held for sale in 2003 and purchased land in Forest, Virginia that was used to build the Forest facility. First Properties, Inc., also a Virginia corporation, was formed to hold title to other real estate owned. One property is
being held in other real estate owned totaling $150,000 as of December 31, 2005.

Competition

The banking business in central Virginia is highly competitive with respect to both loans and
deposits and is dominated by a number of major banks that have offices operating throughout the state and in the Companys market area. The Company actively competes for all types of deposits and loans with other banks and with nonbank
financial institutions, including savings and loan associations, finance companies, credit unions, mortgage companies, insurance companies and other lending institutions.

Institutions such as brokerage firms, credit card companies and even retail establishments offer alternative investment vehicles such as money market funds as well as traditional banking services. Other entities (both
public and private) seeking to raise capital through the issuance and sale of debt or equity securities also represent a source of competition for the Company with respect to the acquisition of deposits. Among the advantages that the major banks
have over the Company is their ability to finance extensive advertising campaigns and to allocate their investment assets to regions of highest yield and demand, over a more diverse geographic area. Although major banks have these competitive
advantages over small independent banks, the Bank actively tries to turn the loss of local independent banks to its competitive advantage by soliciting customers who prefer the personal service offered by a small independent bank.



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The Company does not depend upon a single customer or industry, the loss of which would have a material
adverse effect on the Companys financial condition. Two industries that have been affected in the Companys market area are the textile and furniture industry. Cheaper production costs overseas has led to job layoffs and a few plant
closings in the immediate area but has not affected the Companys overall profitability.

The Company believes that its prompt
response to lending requests is a key factor to the Companys competitive position in its primary service area. In addition, the accessibility of senior management to customers and local decision-making also distinguish the Company from other
area financial institutions.

In order to compete with the other financial institutions in its primary service area, the Company relies
principally upon local promotional activities, personal contact by its officers, directors, employees and stockholders and offering specialized services to customers. The Companys promotional activities emphasize the advantages of dealing with
a local bank attuned to the particular needs of the community.

Regulation and Supervision

Set forth below is a brief description of the material laws and regulations that
affect the Company. The description of these statutes and regulations is only a summary and does not purport to be complete. This discussion is qualified in its entirety by reference to the statutes and regulations summarized below. No assurance can
be given that these statutes or regulations will not change in the future.

General. The Company is subject to the periodic
reporting requirements of the Securities Exchange Act of 1934, as amended (the Exchange Act), which include, but are not limited to, the filing of annual, quarterly and other reports with the Securities and Exchange Commission (the
SEC). As an Exchange Act reporting company, the Company is directly affected by the Sarbanes-Oxley Act of 2002 (the SOX), which is aimed at improving corporate governance and reporting procedures and requires additional
corporate governance measures and expanded disclosure with respect to the Companys corporate operations and internal controls. The Company is complying with the SEC and other rules and regulations implemented pursuant to the SOX and intends to
comply with any applicable rules and regulations implemented in the future. Although the Company has incurred and will continue to incur additional expense in complying with the provisions of the SOX and the resulting regulations, this compliance
has not had, and is not expected to have, a material impact on the Companys financial condition or results of operations.

The
Company is a bank holding company within the meaning of the Bank Holding Company Act of 1956, and is registered as such with, and subject to the supervision of, the Board of Governors of the Federal Reserve System(the FRB). Generally, a
bank holding company is required to obtain the approval of the FRB before it may acquire all or substantially all of the assets of any bank, and before it may acquire ownership or control of the voting shares of any bank if, after giving effect to
the acquisition, the bank holding company would own or control more than 5% of the voting shares of such bank. The FRBs approval is also required for the merger or consolidation of bank holding companies.

The Company is required to file periodic reports with the FRB and provide any additional information the FRB may require. The FRB also has the authority
to examine the Company and the Bank, as well as any arrangements between the Company and the Bank, with the cost of any such examinations to be borne by the Company.

Banking subsidiaries of bank holding companies are also subject to certain restrictions imposed by Federal law in dealings with their holding companies and other affiliates. Subject to certain restrictions set forth
in the Federal Reserve Act, a bank can loan or extend credit to an affiliate, purchase or invest in the securities of an affiliate, purchase assets from an affiliate or issue a guarantee, acceptance or letter of credit on behalf of an affiliate, as
long as the aggregate amount of such transactions of a bank and its subsidiaries with its affiliates does not exceed 10% of the capital stock



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and surplus of the bank on a per affiliate basis or 20% of the capital stock and surplus of the bank on an aggregate
affiliate basis. In addition, such transactions must be on terms and conditions that are consistent with safe and sound banking practices. In particular, a bank and its subsidiaries generally may not purchase from an affiliate a low-quality asset,
as defined in the Federal Reserve Act. These restrictions also prevent a bank holding company and its other affiliates from borrowing from a banking subsidiary of the bank holding company unless the loans are secured by marketable collateral of
designated amounts. Additionally, the Company and its subsidiary are prohibited from engaging in certain tie-in arrangements in connection with any extension of credit, sale or lease of property or furnishing of services.

A bank holding company is prohibited from engaging in or acquiring direct or indirect ownership or control of more than 5% of the voting shares of any
company engaged in nonbanking activities. A bank holding company may, however, engage in or acquire an interest in a company that engages in activities which the FRB has determined by regulation or order are so closely related to banking as to be a
proper incident to banking. In making these determinations, the FRB considers whether the performance of such activities by a bank holding company would offer advantages to the public that outweigh possible adverse effects.

As a national bank, the Bank is also subject to regulation, supervision and regular examination by the Office of the Comptroller of the Currency (the
Comptroller). Each depositors account with the Bank is insured by the Federal Deposit Insurance Corporation (the FDIC) to the maximum amount permitted by law, which is currently $100,000 for each depositor. The Bank is
also subject to certain regulations promulgated by the FRB and applicable provisions of Virginia law, insofar as they do not conflict with or are not preempted by Federal banking law.

The regulations of the FDIC, the Comptroller and FRB govern most aspects of the Companys business, including deposit reserve requirements,
investments, loans, certain check clearing activities, issuance of securities, payment of dividends, branching, deposit interest rate ceilings and numerous other matters. As a consequence of the extensive regulation of commercial banking activities
in the United States, the Companys business is particularly susceptible to changes in state and Federal legislation and regulations, which may have the effect of increasing the cost of doing business, limiting permissible activities or
increasing competition.

Governmental Policies and Legislation. Banking is a business that depends primarily on interest rate
differentials. In general, the difference between the interest rates paid by the Company on its deposits and its other borrowings and the interest rates received by the Company on loans extended to its customers and securities held in its portfolio
comprise the major portion of the Companys earnings. These rates are highly sensitive to many factors that are beyond the Companys control. Accordingly, the Companys growth and earnings are subject to the influence of domestic and
foreign economic conditions, including inflation, recession and unemployment.

The commercial banking business is affected not only by
general economic conditions, but is also influenced by the monetary and fiscal policies of the Federal government and the policies of its regulatory agencies, particularly the FRB. The FRB implements national monetary policies (with objectives such
as curbing inflation and combating recession) by its open-market operations in U.S. Government securities, by adjusting the required level of reserves for financial institutions subject to its reserve requirements and by varying the discount rates
applicable to borrowings by depository institutions. The actions of the FRB in these areas influence the growth of bank loans, investments and deposits, and also affect interest rates charged on loans and paid on deposits. The nature and impact of
any future changes in monetary policies cannot be predicted.

From time to time, legislation is enacted which has the effect of increasing
the cost of doing business, limiting or expanding permissible activities or affecting the competitive balance between banks and other financial institutions. Proposals to change the laws and regulations governing the operations and taxation of bank
holding companies, banks and other financial institutions are frequently made in Congress, in the Virginia legislature and brought before various bank holding company and bank regulatory agencies. The likelihood of any major changes and the impact
such changes might have are impossible to predict.



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Dividends.There are regulatory restrictions on dividend payments by both the Bank
and the Company that may affect the Companys ability to pay dividends on its common stock. See Item 5. Market for Common Equity and Related Stockholder Matters.

Capital Requirements. The FRB, the Comptroller and the FDIC have adopted risk-based capital adequacy guidelines for bank holding companies
and banks. These capital adequacy regulations are based upon a risk-based capital determination, whereby a bank holding companys capital adequacy is determined in light of the risk, both on- and off-balance sheet, contained in the
companys assets. Different categories of assets are assigned risk weightings and are counted as a percentage of their book value.

The regulations divide capital between Tier 1 capital (core capital) and Tier 2 capital. For a bank holding company, Tier 1 capital consists primarily of common stock, related surplus, noncumulative perpetual preferred stock, minority
interests in consolidated subsidiaries and a limited amount of qualifying cumulative preferred securities. Goodwill and certain other intangibles are excluded from Tier 1 capital. Tier 2 capital consists of an amount equal to the allowance for loan
losses up to a maximum of 1.25% of risk weighted assets, limited other types of preferred stock not included in Tier 1 capital, hybrid capital instruments and term subordinated debt. Investments in and loans to unconsolidated banking and finance
subsidiaries that constitute capital of those subsidiaries are excluded from capital. The sum of Tier 1 and Tier 2 capital constitutes qualifying total capital. The guidelines generally require banks to maintain a total qualifying capital to
weighted risk assets ratio of 8% (the Risk-based Capital Ratio). At least 4% of the total qualifying capital to weighted risk assets (the Tier 1 Risk-based Capital Ratio) must be Tier 1 capital.

The FRB, the Comptroller and the FDIC have adopted leverage requirements that apply in addition to the risk-based capital requirements. Banks and bank
holding companies are required to maintain a minimum leverage ratio of Tier 1 capital to average total consolidated assets (the Leverage Ratio) of at least 3.0% for the most highly-rated, financially sound banks and bank holding
companies and a minimum Leverage Ratio of at least 4.0% for all other banks. The FDIC and the FRB define Tier 1 capital for banks in the same manner for both the Leverage Ratio and the Risk-based Capital Ratio. However, the FRB defines Tier 1
capital for bank holding companies in a slightly different manner. An institution may be required to maintain Tier 1 capital of at least 4% or 5%, or possibly higher, depending upon the activities, risks, rate of growth, and other factors deemed
material by regulatory authorities. As of December 31, 2005, the Company and Bank both met all applicable capital requirements imposed by regulation.

Federal Deposit Insurance Corporation Improvement Act of 1991 (FDICIA). There are five capital categories applicable to insured institutions, each with specific regulatory consequences. If
the appropriate Federal banking agency determines, after notice and an opportunity for hearing, that an insured institution is in an unsafe or unsound condition, it may reclassify the institution to the next lower capital category (other than
critically undercapitalized) and require the submission of a plan to correct the unsafe or unsound condition. The Comptroller has issued regulations to implement these provisions. Under these regulations, the categories are:

a. Well Capitalized  The institution exceeds the required minimum level for each relevant capital measure. A well capitalized institution is one
(i) having a Risk-based Capital Ratio of 10% or greater, (ii) having a Tier 1 Risk-based Capital Ratio of 6% or greater, (iii) having a Leverage Ratio of 5% or greater and (iv) that is not subject to any order or written
directive to meet and maintain a specific capital level for any capital measure.

b. Adequately Capitalized  The institution meets
the required minimum level for each relevant capital measure. No capital distribution may be made that would result in the institution becoming undercapitalized. An adequately capitalized institution is one (i) having a Risk-based Capital Ratio
of 8% or greater, (ii) having a Tier 1 Risk-based Capital Ratio of 4% or greater and (iii) having a Leverage Ratio of 4% or greater or a Leverage Ratio of 3% or greater if the institution is rated composite 1 under the CAMELS (Capital,
Assets, Management, Earnings, Liquidity and Sensitivity to market risk) rating system.

c. Undercapitalized  The institution fails to
meet the required minimum level for any relevant capital measure. An undercapitalized institution is one (i) having a Risk-based Capital Ratio of less than 8% or (ii) having a Tier 1 Risk-based Capital Ratio of less than 4% or
(iii) having a Leverage Ratio of less than 4%, or if the institution is rated a composite 1 under the CAMEL rating system, a Leverage Ratio of less than 3%.



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d. Significantly Undercapitalized  The institution is significantly below the required minimum
level for any relevant capital measure. A significantly undercapitalized institution is one (i) having a Risk-based Capital Ratio of less than 6% or (ii) having a Tier 1 Risk-based Capital Ratio of less than 3% or (iii) having a
Leverage Ratio of less than 3%.

e. Critically Undercapitalized  The institution fails to meet a critical capital level set by the
appropriate federal banking agency. A critically undercapitalized institution is one having a ratio of tangible equity to total assets that is equal to or less than 2%.

An institution which is less than adequately capitalized must adopt an acceptable capital restoration plan, is subject to increased regulatory oversight, and is increasingly restricted in the scope of its permissible
activities. Each company having control over an undercapitalized institution must provide a limited guarantee that the institution will comply with its capital restoration plan. Except under limited circumstances consistent with an accepted capital
restoration plan, an undercapitalized institution may not grow. An undercapitalized institution may not acquire another institution, establish additional branch offices or engage in any new line of business unless determined by the appropriate
Federal banking agency to be consistent with an accepted capital restoration plan, or unless the FDIC determines that the proposed action will further the purpose of prompt corrective action. The appropriate Federal banking agency may take any
action authorized for a significantly undercapitalized institution if an undercapitalized institution fails to submit an acceptable capital restoration plan or fails in any material respect to implement a plan accepted by the agency. A critically
undercapitalized institution is subject to having a receiver or conservator appointed to manage its affairs and for loss of its charter to conduct banking activities.

An insured depository institution may not pay a management fee to a bank holding company controlling that institution or any other person having control of the institution if, after making the payment, the
institution, would be undercapitalized. In addition, an institution cannot make a capital distribution, such as a dividend or other distribution that is in substance a distribution of capital to the owners of the institution, if following such a
distribution the institution would be undercapitalized. Thus, if payment of such a management fee or the making of such would cause the Bank to become undercapitalized, it could not pay a management fee or dividend to the Company.

As of December 31, 2005, both the Company and the Bank were considered well capitalized.

Deposit Insurance Assessments. FDICIA also requires the FDIC to implement a risk-based assessment system in which the insurance premium
relates to the probability that the deposit insurance fund will incur a loss and directs the FDIC to set semi-annual assessments in an amount necessary to increase the reserve ratio of the Bank Insurance Fund to at least 1.25% of insured deposits or
a higher percentage as determined to be justified by the FDIC.

The FDIC has promulgated implementing regulations that base an
institutions risk category partly upon whether the institution is well capitalized (1), adequately capitalized (2) or under capitalized (3), as defined under the Prompt Corrective Action Regulations. In
addition, each insured depository institution is assigned to one of three supervisory subgroups. Subgroup A institutions are financially sound institutions with few minor weaknesses, subgroup B institutions
demonstrate weaknesses which, if not corrected, could result in significant deterioration, and subgroup C institutions are those as to which there is a substantial probability that the FDIC will suffer a loss in connection with the
institution unless effective action is taken to correct the areas of weakness.

Mortgage Banking Regulation. The
Banks mortgage banking operation is subject to the rules and regulations of, and examination by the U.S. Department of Housing and Urban Development (HUD), the Federal Housing Administration (FHA), the Veterans
Administration (VA) and state regulatory authorities with respect to originating, processing and selling mortgage loans. Those rules and regulations, among other things, establish standards for loan origination, prohibit discrimination,
provide for inspections and appraisals of property, require credit reports on prospective borrowers and, in some



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cases, restrict certain loan features, and fix maximum interest rates and fees. In addition to other federal laws,
mortgage origination activities are subject to the Equal Credit Opportunity Act, Truth-in-Lending Act, Home Mortgage Disclosure Act, the Real Estate Settlement Procedures Act, and the Home Ownership Equity Protection Act, and the regulations
promulgated thereunder. These laws prohibit discrimination, require the disclosure of certain basic information to mortgagors concerning credit and settlement costs, limit payment for settlement services to the reasonable value of the services
rendered and require the maintenance and disclosure of information regarding the disposition of mortgage applications based on race, gender, geographical distribution and income level.

Gramm-Leach-Bliley Act of 1999. The Gramm-Leach-Bliley Act of 1999 (the GLBA) implemented major changes to the statutory
framework for providing banking and other financial services in the United States. The GLBA, among other things, eliminated many of the restrictions on affiliations among banks and securities firms, insurance firms and other financial service
providers. A bank holding company that qualifies and elects to be a financial holding company will be permitted to engage in activities that are financial in nature or incident or complimentary to financial activities. The activities that the GLBA
expressly lists as financial in nature include insurance underwriting, sales and brokerage activities, providing financial and investment advisory services, underwriting services and limited merchant banking activities.

To become eligible for these expanded activities, a bank holding company must qualify and elect to be a financial holding company. To qualify as a
financial holding company, each insured depository institution controlled by the bank holding company must be well-capitalized, well-managed and have at least a satisfactory rating under the CRA (discussed below). In addition, the bank holding
company must file with the FRB a declaration of its intention to become a financial holding company. While the Company satisfies these requirements, the Company has not elected for various reasons to be treated as a financial holding company under
the GLBA.

The GLBA has not had a material adverse impact on the Companys or the Banks operations. To the extent that it allows
banks, securities firms and insurance firms to affiliate, the financial services industry has experienced further consolidation. The GLBA probably has the result of increasing competition that we face from larger institutions and other companies
offering financial products and services, many of which may have substantially greater financial resources.

The GLBA and other new
regulations issued by federal banking agencies also provide protections against the transfer and use by financial institutions of consumer nonpublic personal information. A financial institution must provide to its customers, at the beginning of the
customer relationship and annually thereafter, the institutions policies and procedures regarding the handling of customers nonpublic personal financial information. These privacy provisions generally prohibit a financial institution
from providing a customers personal financial information to unaffiliated third parties unless the institution discloses to the customer that the information may be so provided and the customer is given the opportunity to opt out of such
disclosure.

Community Reinvestment Act. The Bank is subject to the requirements of the Community Reinvestment Act (the
CRA). The CRA imposes on financial institutions an affirmative and ongoing obligation to meet the credit needs of their local communities, including low and moderate-income neighborhoods, consistent with the safe and sound operation of
those institutions. A financial institutions efforts in meeting community credit needs currently is evaluated as part of the examination process pursuant to twelve assessment factors and then given a rating of Outstanding,
Satisfactory, Needs to improve or Substantial noncompliance. These factors also are considered in evaluating mergers, acquisitions and applications to open a branch or facility. The Bank received a rating of
Satisfactory in its most recent CRA performance evaluation as of July 8, 2003.

USA PATRIOT Act.The USA
PATRIOT Act became effective on October 26, 2001 and provides for the facilitation of information sharing among governmental entities and financial institutions for the purpose of combating terrorism and money laundering. Among other
provisions, the USA PATRIOT Act permits financial institutions, upon providing notice to the United States Treasury, to share information with one another in order to better identify and report to the federal government concerning activities that
may involve money laundering or terrorists activities. The USA PATRIOT Act is considered a significant banking law in terms of information disclosure regarding certain customer



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transactions. Certain provisions of the USA Patriot Act impose the obligation to establish anti-money laundering
programs, including the development of a customer identification program, and the screening of all customers against any government lists of known or suspected terrorists.

Although it does create a reporting obligation, the Bank does not expect the USA PATRIOT Act to materially affect its products, services or other business activities.

Reporting Terrorist Activities.The Federal Bureau of Investigation (FBI) has sent, and will send, our banking
regulatory agencies lists of the names of persons suspected of involvement in the September 11, 2001, terrorist attacks on New York City and Washington, DC. The Bank has been requested, and will be requested, to search its records for any
relationships or transactions with persons on those lists. If the Bank finds any relationships or transactions, it must file a suspicious activity report and contact the FBI.

The Office of Foreign Assets Control (OFAC), which is a division of the Department of the Treasury is responsible for helping to insure that
United States entities do not engage in transactions with enemies of the United States, as defined by various Executive Orders and Acts of Congress. OFAC has sent, and will send, our banking regulatory agencies lists of names of persons
and organizations suspected of aiding, harboring or engaging in terrorist acts. If the Bank finds a name on any transaction, account or wire transfer that is on an OFAC list, it must freeze such account, file a suspicious activity report and notify
the FBI. The Bank has appointed an OFAC compliance officer to oversee the inspection of its accounts and the filing of any notifications. The Bank actively checks high-risk OFAC areas such as new accounts, wire transfers and customer files. The Bank
performs these checks utilizing software, which is updated each time a modification is made to the lists provided by OFAC and other agencies of Specially Designated Nationals and Blocked Persons.

Consumer Laws and Regulations. The Bank is also subject to certain consumer laws and regulations that are designed to protect consumers in
transactions with banks. While the list set forth herein is not exhaustive, these laws and regulations include the Truth in Lending Act, the Truth in Savings Act, the Electronic Funds Transfer Act, the Expedited Funds Availability Act, the Equal
Credit Opportunity Act, the Fair Credit Reporting Act and the Fair Housing Act, among others. These laws and regulations mandate certain disclosure requirements and regulate the manner in which financial institutions transact business with
customers. The Banks must comply with the applicable provisions of these consumer protection laws and regulations as part of its ongoing customer relations.

Employees

As of December 31, 2005, the Company had 87 full-time employees. The Companys management
believes that its employee relations are good.

Executive Officers of the Registrant



|                            |  |                                                                                                                                                                                                                                                                                                                                                                                     
|--------------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Name (Age)                  |  | Principal Occupation During Past Five Years                                                                                                                                                                                                                                                                                                                                         
|Robert H. Gilliam, Jr. (60) |  | President & Chief Executive Officer of Pinnacle Bankshares Corporation and President, Chief Executive Officer and Trust Officer of The First National Bank of Altavista since 1980;
Director, Pinnacle Bankshares Corporation since 1980.                                                                                                                                           
|                            | 
|Carroll E. Shelton (55)     |  | Senior Vice President of Pinnacle Bankshares Corporation and Senior Vice President and Chief Lending Officer of The First National Bank of Altavista since 1990; Director, Pinnacle Bankshares
Corporation since 1990.                                                                                                                                                              
|                            | 
|Bryan M. Lemley (34)        |  | Secretary, Treasurer and Chief Financial Officer of Pinnacle Bankshares Corporation since 2000 and Vice President, Cashier and Chief Financial Officer of The First National Bank of Altavista
since June 2000; Internal Auditor of The First National Bank of Altavista from March through June 2000; Senior Auditor for One Valley Bancorp from August 1994 through February 2000.



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##### Table of Contents

Item 2. Description of Property.

The Companys main office and corporate headquarters,
located at 622 Broad Street in downtown Altavista, Virginia, is owned and principally occupied by the Bank.

The Vista Office, located at
1301 N. Main Street in Altavista, Virginia, consists of a single-story building owned by the Bank.

The Airport Office, located at 14580
Wards Road in Campbell County, Virginia, consists of a single-story building owned by the Bank.

The Old Forest Road Office, located at
3309 Old Forest Road in Lynchburg, Virginia, consists of a single-story building owned by the Bank.

The Brookville Plaza Office, located
at 7805 Timberlake Road in Lynchburg, Virginia, consists of office space leased for $3,125 per month through May 2006 by the Bank in a local supermarket. The Company does not plan to renew this lease and plans to move the office 1.4 miles to 20865
Timberlake Road in Lynchburg, Virginia upon supervisory approval. The new Office would consist of a single-story building leased by the bank for approximately 4,000 per month through April 2011.

The Forest Office, located at 14417 Forest Road in Forest, Virginia, consists of office of a single-story building owned by the Bank.

The Smith Mountain Lake loan production office, located at 74 Scruggs Road, Suite 102, in Moneta, Virginia, consists of office space leased for $1,485
per month through April 2007 by the Bank.

All of these properties are in good operating condition and are adequate for the Companys
present and anticipated future needs. The Company maintains comprehensive general liability and casualty loss insurance covering its properties and activities conducted in or about its properties. The Company believes this insurance provides
adequate protection for liabilities or losses that might arise out of the ownership and use of such properties.

Item 3. Legal Proceedings.

Neither the Company nor the Bank nor any of their properties is
involved in any pending legal proceedings, nor are any such proceedings threatened, other than nonmaterial proceedings arising in the ordinary course of the Companys and the Banks business.

Item 4. Submission of Matters to a Vote of Security Holders.

No matters were submitted to a
vote of security holders during the fourth quarter of the Companys fiscal year ended December 31, 2005.



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##### Table of Contents

PART II

Item 5. Market for Common Equity and Related Stockholder Matters.

The information contained on
the inside back cover of the 2005 Annual Report to Shareholders, under the caption, Market for Common Equity and Related Stockholder Matters, is incorporated herein by reference.

Item 6. Managements Discussion and Analysis or Plan of Operation.

The information presented under the caption Managements Discussion and Analysis on pages 6 through 26 of the 2005 Annual Report to Shareholders is incorporated herein by reference.

Item 7. Financial Statements.

The consolidated financial statements of the Company and its
subsidiary, including the accompanying notes, and independent auditors report thereon, contained on pages 27 through 57 of the 2005 Annual Report to Shareholders, are incorporated herein by reference.

Item 8. Changes In and Disagreements With Accountants on Accounting and Financial Disclosure.

As discussed in the Companys current reports on Form 8-K and 8-K/A filed with the SEC on January 29, 2004, and March 25, 2004, the Company engaged Cherry, Bekaert & Holland LLP as its independent auditors for the
fiscal year ended December 31, 2004, and chose not to renew the engagement of KPMG LLP, which served as the Companys independent auditors for the fiscal year ended December 31, 2003. The Company continued to engage Cherry,
Bekaert & Holland LLP as its independent auditors for the fiscal year ended December 31, 2005.

Pinnacle Bankshares
Corporation has agreed to indemnify and hold KPMG LLP (KPMG) harmless against and from any and all legal costs and expenses incurred by KPMG in successful defense of any legal action or proceeding that arises as a result of KPMGs consent to
the incorporation by reference of its audit report on the Companys past financial statements incorporated by reference in the Companys annual report on Form 10-KSB for the year ended December 31, 2004.

Item 8A. Controls and Procedures.

The Company maintains a system of disclosure controls and
procedures that is designed to ensure that material information is accumulated and communicated to management, including the Companys Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding
required disclosure. As required, management, with the participation of the Companys Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of the design and operation of the Companys disclosure controls
and procedures as of the end of the period covered by this report. Based on this evaluation, the Companys Chief Executive Officer and Chief Financial Officer concluded that the Companys disclosure controls and procedures were
operating effectively to ensure that information required to be disclosed by the Company in reports that it files or submits under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized, and reported within the time
periods specified in the rules and forms of the SEC.

Because of the inherent limitations in all control systems, no evaluation of controls
can provide absolute assurance that the Companys disclosure controls and procedures will detect or uncover every situation involving the failure of persons within the Company to disclose material information otherwise required to be set forth
in the Companys periodic reports.

The Companys management is also responsible for establishing and maintaining adequate
internal control over financial reporting to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles.
No changes in the Companys internal control over financial reporting occurred



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##### Table of Contents

during the fiscal quarter ended December 31, 2005 that have materially affected, or are reasonably likely to
materially affect, the Companys internal control over financial reporting.

Item 8B. Other Information.

None.

PART III

Except as otherwise indicated, information called for by the following items under Part III is
contained in the Proxy Statement for the Companys 2006 Annual Meeting of Shareholders (2006 Proxy Statement) to be held on April 11, 2006.

Item 9. Directors, Executive Officers, Promoters and Control Persons; Compliance with Section 16(a) of the Exchange Act.

The information with respect to the directors of the Company required by this item is contained on pages 3 through 6 of the 2006 Proxy Statement under the caption Election of Directors, and is incorporated
herein by reference. The information regarding the Section 16(a) reporting requirements of the directors and executive officers is contained on page 10 of the 2006 Proxy Statement under the caption Section 16(a) Beneficial Ownership
Reporting Compliance, and is incorporated herein by reference. The information concerning the executive officers of the Company required by this item is included in Part I of this Form 10-KSB under the caption Executive Officers of the
Registrant. The information regarding the Companys Audit Committee required by this item is contained on pages 10 and 11 of the 2006 Proxy Statement under the caption Meetings and Committees of the Board of Directors, and is
incorporated herein by reference.

The Company has adopted a Code of Conduct and Conflict of Interest Policy that applies to the directors,
executives and employees of the Company and the Bank, including the Companys Chief Executive Officer, Chief Financial Officer, Controller and other persons performing similar functions. See Exhibit 14.

Item 10. Executive Compensation.

The information on Executive Compensation required by this
item is contained on pages 6 through 9 of the 2006 Proxy Statement under the captions Executive Compensation and Change in Control Agreement, and is incorporated herein by reference. Information on compensation of directors
is contained on page 6 of the 2006 Proxy Statement under the caption Directors Fees and is incorporated herein by reference.

Item 11. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.

The information on Security Ownership of Certain Beneficial Owners and Management required by this item is contained on pages 2 and 3 of the 2006 Proxy Statement and is incorporated herein by reference.



12



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##### Table of Contents

The following table sets forth information as of December 31, 2005 with respect to certain
compensation plans under which equity securities of the Company are authorized for issuance.

Equity Compensation Plan Information



|                                                       |  |                                                                                                 |  |                                                                                  |       |                                                                                                                                                 |        
|------------------------------------------------------ |  | ----------------------------------------------------------------------------------------------- |  | -------------------------------------------------------------------------------- | ----- | ----------------------------------------------------------------------------------------------------------------------------------------------- | -------
|Plan Category                                          |  | Number of securities to be issued upon exercise of outstanding options, warrants and rights (a) |  | Weighted- average exercise price
of outstanding options, warrants and rights (b) |       | Number of securities remaining available for future
issuance under equity compensation plans (excluding securities reflected in column (a)) (c)
|Equity compensation plans approved by shareholders (1) |  | 42,500                                                                                          |  | $                                                                                | 11.92 |                                                                                                                                                 | 107,500
|                                                       |  |                                                                                                 | 
|Equity compensation plans not approved by shareholders |  |                                                                                                |  |                                                                                  |      |                                                                                                                                                 |       
|                                                       |  |                                                                                                 | 
|Total                                                  |  | 42,500                                                                                          |  | $                                                                                | 11.92 |                                                                                                                                                 | 107,500

---

|(1) | These shares are available to be granted in the form of options, restricted stock or stock appreciation rights under the Companys 1997 Incentive Stock Plan and 2004 Incentive
Stock Plan.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Item 12. Certain Relationships and Related Transactions.

The information on Interest of
Management in Certain Transactions required by this item is contained on page 6 of the 2006 Proxy Statement and is incorporated herein by reference.



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##### Table of Contents

Item 13. Exhibits.



|              |   |  |                                                                                                                                                                                                                                 
|------------- | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|ExhibitNumber |   |  | Description                                                                                                                                                                                                                     
|3.1           |   |  | Amended and Restated Articles of Incorporation (incorporated by reference to Appendix 1 to registrants amended registration statement on Form S-4 (File No. 333-20399) filed on January
30, 1997)                              
|              |  
|3.2           |   |  | Bylaws (incorporated by reference to Exhibit 3(ii) to registrants registration statement on Form S-4 (File No. 333-20399) filed on January 24, 1997)                                                                           
|              |  
|10.1          | * |  | 1997 Incentive Stock Plan (incorporated by reference to Exhibit 4.3 to registrants registration statement on Form S-8 filed September 14, 1998)                                                                                
|              |  
|10.2          | * |  | Change in Control Agreement between Pinnacle Bankshares Corporation and Robert H. Gilliam, Jr., dated May 12, 1998 (incorporated by reference to Exhibit 10.2 to registrants annual
report on Form 10-KSB filed March 25, 2003)
|              |  
|10.3          | * |  | VBA Directors Deferred Compensation Plan for Pinnacle Bankshares Corporation, effective December 1, 1997 (incorporated by reference to Exhibit 10.3 to registrants annual report on
Form 10-KSB filed March 25, 2003)         
|              |  
|10.4          | * |  | 2004 Incentive Stock Plan (incorporated by reference to Exhibit 10.4 to registrants quarterly report on Form 10-QSB filed May 10, 2004)                                                                                        
|              |  
|10.5          | * |  | Directors Annual Compensation                                                                                                                                                                                                  
|              |  
|10.6          | * |  | Base Salaries of Named Executive Officers of the Registrant                                                                                                                                                                     
|              |  
|13            |   |  | 2005 Annual Report to Shareholders                                                                                                                                                                                              
|              |  
|14            |   |  | Pinnacle Bankshares Corporation Code of Conduct and Conflict of Interest Policy (incorporated by reference to Exhibit 14 to registrants annual report on Form 10-KSB filed March 17,
2004)                                     
|              |  
|21            |   |  | Subsidiaries of Registrant                                                                                                                                                                                                      
|              |  
|23.1          |   |  | Consent of Cherry, Bekaert & Holland, LLP                                                                                                                                                                                       
|              |  
|31.1          |   |  | CEO Certification Pursuant to Rule 13a-14(a)                                                                                                                                                                                    
|              |  
|31.2          |   |  | CFO Certification Pursuant to Rule 13a-14(a)                                                                                                                                                                                    
|              |  
|32            |   |  | CEO/CFO Certification Pursuant to § 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. § 1350)                                                                                                                                    

---

|* | Denotes management contract.
|- | ----------------------------



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##### Table of Contents

Item 14. Principal Accountant Fees and Services.

The information contained on page 12 of the
2006 Proxy Statement under the captions Principal Accountant Fees and Pre-Approval Policies is incorporated herein by reference.



15



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##### Table of Contents

SIGNATURES

In accordance with Section 13 or 15(d) of the Exchange Act, the registrant caused this report
to be signed on its behalf by the undersigned, thereunto duly authorized.



|               |  |                                     
|-------------- |  | ------------------------------------
|               |  | PINNACLE BANKSHARES CORPORATION     
|               |  | (Registrant)                        
|               | 
|MARCH 24, 2006 |  | /s/ Robert H. Gilliam, Jr.          
|Date           |  | Robert H. Gilliam Jr., President and
|               |  | Chief Executive Officer             

In accordance with the Exchange Act, this report has been signed below by the following persons on
behalf of the registrant and in the capacities and on the dates indicated.



|                                                  |  |                                                                                               |  |               
|------------------------------------------------- |  | --------------------------------------------------------------------------------------------- |  | --------------
|Signature                                         |  | Title                                                                                         |  | Date          
|/s/ Robert H. Gilliam, Jr. Robert H.
Gilliam, Jr. |  | President, Chief Executive Officer and Director (principal executive officer)                 |  | March 24, 2006
|                                                  |  |                                                                                              
|/s/ Bryan M. Lemley Bryan M.
Lemley               |  | Secretary, Treasurer and Chief Financial Officer (principal financial and accounting officer) |  | March 24, 2006
|                                                  |  |                                                                                              
|/s/ A. Willard Arthur A. Willard
Arthur           |  | Director                                                                                      |  | March 24, 2006
|                                                  |  |                                                                                              
|/s/ James E. Burton, IV James E.
Burton, IV       |  | Director                                                                                      |  | March 24, 2006
|                                                  |  |                                                                                              
|/s/ John P. Erb John P.
Erb                       |  | Director                                                                                      |  | March 24, 2006
|                                                  |  |                                                                                              
|/s/ R.B. Hancock, Jr. R.B. Hancock,
Jr.           |  | Director                                                                                      |  | March 24, 2006
|                                                  |  |                                                                                              
|/s/ James P. Kent, Jr. James P. Kent,
Jr.         |  | Director                                                                                      |  | March 24, 2006
|                                                  |  |                                                                                              
|/s/ William F. Overacre William F.
Overacre       |  | Director                                                                                      |  | March 24, 2006
|                                                  |  |                                                                                              
|/s/ Carroll E. Shelton Carroll E.
Shelton         |  | Director                                                                                      |  | March 24, 2006
|                                                  |  |                                                                                              
|/s/ John L. Waller John L.
Waller                 |  | Director                                                                                      |  | March 24, 2006
|                                                  |  |                                                                                              
|/s/ Michael E. Watson Michael E.
Watson           |  | Director                                                                                      |  | March 24, 2006



16